This document discusses vermifiltration, a low-cost wastewater treatment technique using earthworms. It describes how earthworms and their gut microbes remove 90% or more of BOD, COD, TDS and TSS from wastewater through ingestion and biodegradation. The document outlines the vermifiltration process, comparing it to a control biofilter bed without worms. It also lists several advantages of vermifiltration over conventional wastewater treatment, such as low energy needs, value-added vermicompost byproduct, and no foul odors.
Wastewater treatment by vermi filtration technologyvivatechijri
Vermifiltration units are sludge-free, noise-free and low- or no-electricity-requiring systems of
operation. The aim of this study was to emphasize wastewater treatment by vermifiltration technology using
waste-eater earthworms to highlight the benefits of clean and nutritive vermifiltered water (vermiaqua) uses in
agriculture to the farmers. They work on natural capacity of earthworms to treat wastewater from different
sources. In view of rising concern about pollution of water bodies due to discharge of waste in them, it is
necessary to initiate alternative thinking as conventional methods through STPs (Sewage treatment Plants) have
had limited success. In recent years the application of specifically designed filtration based technology
(popularly known as Vermifiltration technology) for treatment of wastewater municipal, urban and agricultural,
is becoming widely acceptable. It treats the wastewater in natural manner without the use of chemicals. In
short, Vermifiltration technology is an improved filtration system for treatment of wastewater. The main
objective of present research work is to provide and popularize a simple, feasible, practically sound, ecofriendly and cost effective technology for wastewater treatment. Vermifiltration technology is such a type of
system, which reduces the impact of sewage and converts into useful water for gardening and irrigation
purpose.
Wastewater treatment by vermi filtration technologyvivatechijri
Vermifiltration units are sludge-free, noise-free and low- or no-electricity-requiring systems of
operation. The aim of this study was to emphasize wastewater treatment by vermifiltration technology using
waste-eater earthworms to highlight the benefits of clean and nutritive vermifiltered water (vermiaqua) uses in
agriculture to the farmers. They work on natural capacity of earthworms to treat wastewater from different
sources. In view of rising concern about pollution of water bodies due to discharge of waste in them, it is
necessary to initiate alternative thinking as conventional methods through STPs (Sewage treatment Plants) have
had limited success. In recent years the application of specifically designed filtration based technology
(popularly known as Vermifiltration technology) for treatment of wastewater municipal, urban and agricultural,
is becoming widely acceptable. It treats the wastewater in natural manner without the use of chemicals. In
short, Vermifiltration technology is an improved filtration system for treatment of wastewater. The main
objective of present research work is to provide and popularize a simple, feasible, practically sound, ecofriendly and cost effective technology for wastewater treatment. Vermifiltration technology is such a type of
system, which reduces the impact of sewage and converts into useful water for gardening and irrigation
purpose.
Presentation can help you to understand concept, principle engineering and important factors of landfilling such as component, requirement, microbial activity, landfill gas and leachate generation
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Sludge dewatering is a prior process to manage the sludge. The dewatering requires to decrease the volume of sludge for easy handling. It has two methods: Conventional and advance.
this presentation gives you a quick glimpse of Sludge Dewatering process and method.
This presentation describes the residuals generated from industries. The residue management plan and its disposal options based on the type of residuals.
Presentation can help you to understand concept, principle engineering and important factors of landfilling such as component, requirement, microbial activity, landfill gas and leachate generation
Lecture note of Industrial Waste Treatment (Elective -III) as per syllabus of Solapur university for BE Civil
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K ORchid College of Engg and Tech,
Solapur
Sludge dewatering is a prior process to manage the sludge. The dewatering requires to decrease the volume of sludge for easy handling. It has two methods: Conventional and advance.
this presentation gives you a quick glimpse of Sludge Dewatering process and method.
This presentation describes the residuals generated from industries. The residue management plan and its disposal options based on the type of residuals.
Parametric Studies on Detergent Using Low Cost SorbentIOSR Journals
: Water is a valued natural resource for the existence of all living organisms. Indian rivers are
polluted due to the discharge of untreated sewage and industrial effluents. Management of the quality of this
precious resource is, therefore, of special importance. In these study industrial effluents samples from the
various detergent factories were collected and analyzed for physicochemical and bacteriological evaluation of
pollution. The use and effectiveness of granular and powder activated carbon made from agricultural waste i.e.
coconut husk and that coconut husk is a suitable adsorbent for such an effluent. Maximum adsorption capacity
is a derived from Langmuir isotherm. A series of fixed bed experiments was carried out and the results were
applied to a bed-depth/service time model for column adsorption. The validity of such a model is discussed. In
the removal of organic matter in wastewater effluents from a industry waste water were investigated. The effect
of process variables such as carbonization temperature, carbonization duration and activation temperature on
the production and quality of activated carbon was studied as well as adsorption capacity was studied
Biotechnology in Microbiology- includes the how microbial associations are worked out in secondary treatment techniques like activated sludge process, trickling filters, rotating biological contractors, composting, bioremediation etc.
Municipal sewage treatment systems carry out various steps involved. These steps are primary treatment, secondary (or) biological treatment, and tertiary treatment.
First presentation of my whole life, That's i want to share with you people. I think this presentation (SECONDARY WASTEWATER TREATMENT) may fulfill your requirement.
Actually when my teacher told me about our assignment I was felling nervous because I've never done this type of thing. when she asked one of my classmate to upload his PPT in class common email-ID, then I felt very bad !!!! not on their success but because I COULDN'T. At that time i promised to myself and with the co-ordination of my group member MR. AYUSH GOVIL, MISS. VERSHA DABAS, MISS KRITI SINGHAL and myself RISHAW KUMAR (TIWARI). And finally i got not only me, we winzzzzz.
thanx to,
Dr. TANNU ALLEN (our prof.)
and special thanx to my group member and my classmate. and you guys also.
Growing an entire plant from a small piece of tissue or plant cells is possible in the right environment and conditions.
They share identical characteristics with their mother plants, such as reproducing in the same pattern as their original.
Massive number of species can be reproduced through tissue culture at this point.
For tissue cultures, a piece or portion of the plant is put into nutrient-rich media that causes the growth of stems and roots.
For micropropagation or direct shoot regeneration, meristematic tissue such as a shoot tip is the ideal choice of starting material for plant tissue culture.
In order to propagate plants from cultured cells, particular environmental conditions must be met.
Thus, each type of plant has its own specific criteria for successful cell culture and regeneration.
India is known for having a wide variety of flora and fauna, even if the majority of them have not yet been well studied.
On the other hand, urbanization and criminal activities have significantly worsened the situation and are harming biodiversity.
All of these situations include overexploitation, affecting most endangered species.
Ayurveda is a discipline of science that benefits life and helps with numerous ailments' maintenance, prevention, and treatment.
All of the herbal treatments used in Ayurveda are derived from plants.
It has medicinal properties and includes a range of phytochemicals.
Found in a particular area in India tropical wet forest has a number of therapeutic purposes in the Homeopathic, Allopathic, Ayurvedic, and Unani.
Its roots are well known for having various medicinal uses, including antidiabetic, adaptogenic, and anaphrodisiac.
It was referred to as an alchemist to boost the body's immunity overall and reported to have several biological activities, including anti-inflammatory, anti-microbial, hepatoprotective, antipyretic,anti-diabetic, antioxidants, and hypolipidemic.
To treat diabetes, arthritis, and chronic leucorrhea, and to postpone menopause, tuber roots extract is used as a substitute for Viagra.
Bioremediation
Bioremediation refers to the use of either naturally occurring or
deliberately introduced microorganisms to consume and break down
environmental pollutants, in order to clean a polluted site.
The process of bioremediation enhances the rate of the natural
microbial degradation of contaminants by supplementing the
indigenous microorganisms (bacteria or fungi) with nutrients, carbon
sources, or electron donors (biostimulation, biorestoration) or by
adding an enriched culture of microorganisms that have specific
characteristics that allow them to degrade the desired contaminant at
a quicker rate (bioaugmentation).
It is a cleaning process that degrades dangerous contaminants using
naturally existing microbes. These bacteria may consume and
degrade organic chemicals as a source of food and energy, degrade
organic substances that are dangerous to living creatures, including
humans, and degrade the organic pollutants into inert products.
Because the bacteria already exist in nature, they offer no pollution
concern
Bioremediation is the use of
microorganisms or microbial processes
to detoxify and degrade environmental
contaminants.
Microorganisms have been used for the
routine treatment and transformation
of waste products for several decades
Bioremediation strategies rely on
having the correct microorganisms in
the right location at the right time in the
right environment for degradation to
occur. The appropriate microorganisms
are bacteria and fungi that have the
physiological and metabolic
competence to breakdown pollutants
Objective of Bioremediation
The objective of bioremediation is to decrease pollutant levels to
undetectable, nontoxic, or acceptable levels, i.e., within regulatory
limits, or, ideally, to totally mineralize organopollutants to carbon
dioxide
BIOREMEDIATION AND THEIR IMPORTANCE IN ENVIRONMENT
PROTECTION
Bioremediation is defined as ‘the process of using microorganisms to remove
the environmental pollutants where microbes serve as scavengers’.
• The removal of organic wastes by microbes leads to environmental clean-up.
The other names/terms used for bioremediation are biotreatment,
bioreclamation, and biorestoration.
• The term “Xenobiotics” (xenos means foreign) refers to the unnatural, foreign
and synthetic chemicals, such as pesticides, herbicides, refrigerants, solvents
and other organic compounds.
• The microbial degradation of xenobiotics also helps in reducing the
environmental pollution. Pseudomonas which is a soil microorganism
effectively degrades xenobiotics.
• Different strains of Pseudomonas that are capable of detoxifying more than
100 organic compounds (e.g. phenols, biphenyls, organophosphates,
naphthalene, etc.) have been identified.
• Some other microbial strains are also known to have the capacity to degrade
xenobiotics such as Mycobacterium, Alcaligenes, Norcardia, etc.
Factors affecting biodegradation
The factors that affect the
biodegradation are:
• the chemical nature of
xenobiotics,
• the conc
The polymerase chain reaction (PCR) is a technique used to amplify small segments of DNA. It is a powerful tool used in molecular biology and biotechnology to create many copies of a specific DNA sequence in order to study it.
***BASIC STEPS
Denaturation: The double-stranded DNA is heated to a high temperature to separate the two strands
Annealing: The temperature is lowered to allow specific primers to bind to the target sequence
Extension: The temperature is raised again to allow a DNA polymerase to extend the primers, creating a new strand of DNA complementary to the original strand
Repeat: These three steps are repeated many times to produce many copies of the target sequence
Plant tissue culture is a technique of growing plant cells, tissues, organs, seeds, or other plant parts in a sterile
environment on a nutrient medium.
Tissue culture had its origins at the beginning of the 20th century with the work of Gottlieb Haberlandt
(plants).
WHY PLANT TISSUE CULTURES ARE DONE ??
The production of clones of plants that produce particularly good flowers, fruits, or have other desirable traits.
To quickly produce mature plants.
The production of multiples of plants in the absence of seeds or necessary pollinators to produce seeds.
The regeneration of whole plants from plant cells that have been genetically modified.
The production of plants in sterile containers reduces disease transmission
Allows production of plants from seeds that otherwise have very low chances of germinating and growing, i.e.: orchids and Nepenthes.
To clean particular plants of viral and other infections and to quickly multiply these plants as 'cleaned stock' for horticulture and agriculture.
***For PTC, the laboratory must have the following facilities:
Washing facility for glassware and ovens for drying glassware.
Medium preparation room with autoclave, electronic balance and pH meter.
Transfer area sterile room with laminar air-flow bench and a positive pressure ventilation unit called High Efficiency Particulate Air (HEPA) filter to maintain aseptic condition.
Culture facility: Growing the explant inoculated into culture tubes at 22-28° C with illumination of light 2400 lux, with a photoperiod of 8-16 hours and a relative humidity of about 60%.
*****Based on the explants some other plant tissue culture types are:
1. Organ culture
2. Meristem culture
3. Protoplast culture
4. Cell culture.
Entrepreneur, Entrepreneurship, Characters of entrepreneur.
Entrepreneurship generally involves creating a start-up firm that offers innovative goods, services, or processes
why an individual who wishes to start a business should be motivated?
Some Characteristics
Of an
Entrepreneurship
are discussed
thoroughly ………
Entrepreneurs: born or made?
Whether you’re a C-suite pro at a large company with hundreds of workers or you’re the founder of a startup that has only a few employees, you can benefit from thinking like an entrepreneur.
While some believe that entrepreneurs are born rather than made, anyone can at least learn some of the characteristics that make entrepreneurs what they are. There is no single definition of what an entrepreneur actually is, but the term usually refers to someone who, among other things, spearheads a venture, makes decisions on how to proceed, secures the capital needed to make the venture a reality, and shoulders most or all of the associated risk.
In order to think like an entrepreneur, you need to have or develop the characteristics of an entrepreneur. Read on to find out about entrepreneurial skills that will help you in the workplace.
Hematopoiesis is the process of blood cells being differentiated from hematopoietic stem cells. This process must be repeated on a regular basis in order to keep the body's circulating blood cell numbers stable. Blood cells are divided into three main linages:
Reticulocytes and erythrocytes make up the Erythroid Lineage (red blood cells).
Lymphocytes (B and T cells) and natural killer cells make up the lymphoid lineage.
Macrophages, dendritic cells, granulocytes, and megakaryocytes are all members of the myeloid lineage.
## Site Of Hematopoiesis
Yolk sac
Liver and spleen
Bone marrow
Gradual replacement of active (red) marrow by tissue inactive (fatty)
Expansion can occur during increased need for cell production
Objectives :-
* Characterization and study of biochar.
*To examine biochar adsorption capacity.
*To determine the effect of KMnO4 as modifying agent on biochar adsorption.
Homeopathy is a way of treating an illness in which the patient is given very small amounts of a drug that produces signs of the illness in healthy people.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
2. VERMIFILTRATION
• Many developing countries or Nations cannot
afford the waste water treatment
• As they are costly need more space to construct
the treatment plant and in addition use of
chemicals for the treatment.
3. VERMIFILTRATION
• Vermifiltration is a new Technique approach
towards wastewater treatment to save cost
,energy and eliminate chemical usage.
• Vermifiltration needs no external energy, except
pumping.
• It’s a known biotechnological aerobic process of
treatment of waste water which is carried out
with the use of epigenic earthworms.
4. VERMIFILTRATION
• Earthworms body work as a 'biofilter' and
they have been found to remove the 5 days
BOD by 90%,COD by 80-90%,TDS by 90-
92% and TSS by 90-95% from wastewater by
the general mechanism of 'ingestion' and
biodegradation of organic wastes,heavy
metals and solids from wastewater and also by
absorbation through body walls.
5. Earthworm
The earthworms have around 600 million years of
experience in waste and environmental
management.
Charles Darwin called them as the “unheralded soldiers of
mankind”, and the Greek philosopher Aristotle called them as
the “intestine of earth”, meaning digesting a widevariety of
organic materials including the waste organics, from earth. [7, 8]
Earthworms are long, cylindrical, narrow,
bilaterally symmetrical, segmented animals
without
bones.
The body is dark brown, glistening, and covered by all of
delicate cuticle. They weigh
around 1,400–1,500 mg after 8–10 weeks.
6. Earthworm
On an average, 2,000 adult worms weigh 1 kg and one
million worms weigh approximately 1 ton.
Usually the life span of an earthworm is practically 3–7 years
depending upon the type of species and the ecological situation.
Earthworms nourish millions of nitrogen-fixing
and decomposer microbes in their gut. They
have chemoreceptors which help in search of
food.
The distribution of earthworms in soil depends on factors
like availability of organic matter, soil moisture and pH of
the soil. They develop in different habitats especially those
which are dark and moist.
7. • As worms breathe through their skin significant ventilation of air in soil medium is necessary.
• They can tolerate a temperature range between 5 and 29˚C. A temperature of 20–25˚C and moisture of 60–
75% are optimum for good worm function.
• Earthworms are bisexual animals and multiply literally rapidly.
• The total life cycle of the worms is closely around 220 days.
• They produce 300–400 young ones within this life period.
• Earthworms are very sensitive to light, touch, and dryness.
• Low temperature is not a big problem for them as the high temperature.
• Their movement is significantly slowed down in winter, but heat can kill them instantly
8.
9.
10.
11. Hydraulic retention time (HRT) is a measure of the average length of time that a compound (in this case
wastewater) remains in a treatment tank or unit
The volume of the aeration tank divided by the influent flowrate is τ (tau), the hyraulic retention time.
Hydraulic loading rate means the rate at which wastes or wastewaters are discharged to a land
disposal or land treatment system, expressed in volume per unit area per unit time or depth of water
per unit area per unit.
Biochemical oxygen demand (BOD) represents the amount of oxygen consumed by
bacteria and other microorganisms while they decompose organic matter under aerobic
(oxygen is present) conditions at a specified temperature.
12. The chemical oxygen demand (COD) is a measure of water and wastewater quality.
The COD test is often used to monitor water treatment plant efficiency.
FAS – Ferrous Ammonium Sulfate
13. Mechanism of action of earthworms in Vermifiltration of wastewater
Microbes present in the gut of earthworms and enzymes present in secreted coelomic fluid stimulate
biodegradation process. The sand and pebble layers of the vermifilter unit also provide a wonderful site for the
growth of aerobic microbes.
• The pollutants in wastewater are adsorbed and stabilized by the earthworms and the aerobic microbes
excreted from the gut of earthworms.
• The vermicast offers excellent ‘hydraulic conductivity’ in vermifilter layers because of being porous-like sand for
cleaning sewage.
• Coelomic fluid also degrades harmful and ineffective microbes from wastewater thus preventing choking of
the medium. (Sinha et al. 2012)
14.
15. Materials: Vermicomposting tanks can be made from local materials (bricks or concrete). Vermifilters
require enclosed reactors made from durable materials that eliminate vermin entry, usually plastic or
concrete. Filter material for the vermifilter can be sawdust, straw, coir, bark mulch or peat. Worms are
required, and three species to date have been successfully used: Eisenia fetida, Eudrilus eugeniae and
Eisenia andrei. It is possible to find worms in the local environment, buy them from vermicomposting or
vermifilter businesses or import them. Prefabricated composting vessels of different sizes are available on
the market.
16. Methods
1. Wastewater Physicochemical Properties Analyzed
• The untreated sewage wastewater was fed to the vermifilter bed as well
as the control bio-filter bed and allowed to move through the bed.
• The treated sewage water was then collected at the bottom of the
vermifilter bed and was analyzed for pH, BOD5, COD, TDSS and
turbidity.
• The pH was measured by the Hanna Instrument which was allowed to
settle for 10 minutes before measurement. The BOD5 was determined
by the standard oxidation procedure after 5 days at 20◦C whilst the
COD and turbidity were also determined by a uv-vis
spectrophotometer according to procedures clearly explained in detail
by Sinha et al., [6] The TDSS was determined by filtration and the
amount of solids removed was determined by drying at 100°C.
17. 2. The Vermifiltration Experimental Procedure
• 5L of sewage wastewater was kept in calibrated
8L poly vinyl chloride (PVC) drum.
• The drum was kept on an elevated platform just
near the vermifilter bed.
• The PVC drum had a tap at the bottom to which
an irrigation system was attached.
• The irrigation system consisted of a 1.3 cm
polypropylene pipe with 2mm holes for trickling
water that allowed uniform the distribution of
wastewater on the soil surface of the vermifilter
bed.
18. • Wastewater from the drum flowed through the
irrigation pipe by gravity at a rate of
0.003m3/hr.
• The wastewater percolated down through
various layers in the vermifilter bed passing
through the soil layer inhabited by
earthworms, the sandy layer, the gravel, and at
the end was collected in a chamber at the
bottom of the vermifilter bed.
• The hydraulic retention time (HRT) in the
vermifilter bed was kept uniformly at 2 hours in
all experiments and each experimental run was
allowed to go through 2 cycles.
• All experiments for both the vermifilter and the
control bio-filter were replicated 3 times.
19. 3. The Control Bio-Filter Bed Experiment
• The control bio-filter bed, without earthworms was set as a comparison to evaluate the effect of earthworms as bio-
filters in wastewater treatment.
• The control bio-filter bed was an exact replica of the vermifiltration bed but had no earthworms added to it.
• The soil, sand particles and the gravels in the control bio-filter bed are reported to also contribute in the filtration and
cleaning of wastewater by adsorption of the impurities on their surface [2-4, 6].
• Soil, sand and gravel particles provide ideal sites for colonization by decomposer microbes which work to reduce BOD,
COD, TDSS and the turbidity from the wastewater [2-4, 5-6].
• When the wastewater passed through the beds, a layer of microbial film was produced around them and together they
constituted the geological and the microbial system of wastewater filtration [2-4, 6].
• Increase of the volume of wastewater passing through the soil filter also increases formation of biofilms of decomposer
microbes [2-4, 5-6].
• Hence it is critical to have a control bio-filter bed to determine the effect of earthworms
21. Vermifiltration treatment is low energy dependent and has distinct
advantage over all the conventional biological wastewater treatment
systems- the Activated Sludge Process, Trickling Filters, and Rotating
Biological Contactors which are highly energy intensive, costly to install and
operate, and do not generate any income.
In the vermifilter process there is 100% capture of organic materials, the capital
and operating costs are less, and there is high value added end product
(vermicompost).
sludge is discharged in the vermifilter bed as excreta (vermicompost) which is
useful soil additive for agriculture and horticulture
ADVANTAGES OF VERMIFILTRATION
1
2
3
22. There is no foul odor as the earthworms arrest rotting and decay of all
putrescible matters in the wastewater and the sludge.
Large quantities of worm biomass will be available as food for the cattle, poultry, and
fish farming, after the first year of vermitreatment.
It can utilize waste organics that otherwise cannot be utilized by other
technologies. vii. Achieve greater utilization of waste materials that cannot be
achieved by other technologies.
ADVANTAGES OF VERMIFILTRATION
4
5
6
23. References
1] Sinha RK, Chandran V, Soni BK, Patel U, Ghosh A (2012) Earth-worms: nature’s chemical managers and detoxifying agents in the environment: an innovative study on treatment of toxic waste-
waters from the petroleum industry by vermifiltration technology. Environmentalist 32(4):445–452. https://doi.org/10.1007/s10669-012-9409-2
[2] R. K. Sinha, G. Bharambe and P. Bapat, “Removal of high BOD and COD loadings of primary liquid waste products from dairy industry by vermifiltration technology using earthworms”,
Indian Journal of Environmental Protection, 27 (6), pp. 486-501, 2007.
[3] R. K. Sinha, S. Agarwal, K. Chauhan, V. Chandran and B. K. Soni, “Vermiculture technology: Reviving the dreams of Sir Charles Darwin for Scientific Use of Earthworms in Sustainable
Development Programs,” Technology and Investment, 1, pp. 155-172, 2010.
[4] R. K. Sinha, K. Chauhan, D. Valan, V. Chandran, B. K. Soni and V. Patel, “Earthworms: Charles Darwin’s unheralded soldiers of mankind: Protective and Productive for Man and
Environment”, Journal of Environmental Protection, 1, pp. 251-260, 2010.
[5] S. D. Ghatnekar, M. F. Kavian, S. M. Sharma, S. S. Ghatnekar, G. S. Ghatnekar and A. V. Ghatnekar, “Application of vermi-filter-based effluent treatments from the gelatine industry”,
Dynamic Soil, Dynamic Plant, pp. 83-88, 2010.
[6] S. A. Azuar and M. H. Ibrahim, “Comparison of sand and oil palm fibre vermibeds in filtration of palm oil mill effluent (POME)”, UMT 11th International Annual Symposium on
Sustainability Science and Management, 09th-11th July 2012, Terengganu, Malaysia, pp. 14141419, 2012.
[7] Darwin F and Seward AC, “More letters of Charles Darwin. A record of his work in series of hitherto unpublished letters.” John Murray, London, (1903), vol. 2, pp. 508. [4] Darwin F and Seward
AC, “More letters of Charles Darwin. A record of his work in series of hitherto unpublished letters.” John Murray, London, (1903), vol. 2, pp. 508.
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