The document discusses water treatment processes used to purify raw water for domestic use. It describes how various impurities like leaves, silt, and microorganisms are removed through screens, sedimentation, coagulation, and filtration. The objectives of water treatment are to treat water from available sources, improve quality by removing unpleasant tastes/odors, and remove harmful matters. Key processes include chemical coagulation and flocculation to remove suspended and colloidal particles, and granular media filtration using slow sand or rapid filters to further remove turbidity and microbes. Slow sand filters are effective at microbial reduction without pretreatment, while rapid filters require coagulation for over 90% removal of enteric microbes.
Quality of water :
It includes all the physical, chemical and biological parameters along with test to be used for defining water quality and water schemes for city
Quality of water :
It includes all the physical, chemical and biological parameters along with test to be used for defining water quality and water schemes for city
Over the last decade, demand for spring management has increased as traditional spring sources have started drying up or becoming contaminated. In response, communities, NGOs and state agencies began dedicated spring protection programmes. In the Himalayas, the State of Sikkim and organizations such as Central Himalayan Action and Research Group (CHIRAG) and People Science Institute (PSI) started identifying and protecting spring recharge areas around 2007. The difference between these programmes and many other previous efforts is that they went beyond supply-side improvements to focus on the use of hydrogeology to map springsheds for targeted interventions.
The Advanced Centre for Water Resources Development and Management (ACWADAM), a research and capacity-building organization comprised of hydrogeologists and other experts began lending their expertise and building capacity of stakeholders. ACWADAM provides technical support, training and materials in hydrogeology to all network partners as well as others in India and the region. Similar programmes began independently in most of the mountain regions of India. Arghyam, a funding organization that was supporting many of these programmes, noticed that these disparate initiatives shared commonalities despite geographic diversity. They thus organized and funded a meeting of these various organizations in June 2014, and the Springs Initiative was born.
The springs initiative aims to tackle the current water crisis and to ensure safe and sustainable access to water for all, by promoting responsible and appropriate management of aquifers, springsheds, and watersheds and conserving ecosystems in partnership with communities, governments and other stakeholders.
This presentation has been developed as a part of the springs initiative to promote an understanding of springs and their role in mountainous areas.
Raw water should be treated to make it potable/fit for drinking. So a line of treatments should be followed to treat the water. After Coagulation and sedimentation the process of filtration and disinfection are followed.
BIS (Bureau of Indian Standards) –BIS is the National Standard Body of India established under the BIS Act 1986 for the harmonious development of the activities of standardization, marking and quality certification of goods and for matters connected therewith or incidental thereto.
Water quality is one of the most important factors in a healthy ecosystem. Clean water supports a diversity of plants and animals.
The quality of the water you consume or use in municipal or industrial processes must meet specific parameters to ensure that drinking water remains free from contaminants that could cause health issues.
Water quality measurements include physical, chemical, and biological parameters.
Over the last decade, demand for spring management has increased as traditional spring sources have started drying up or becoming contaminated. In response, communities, NGOs and state agencies began dedicated spring protection programmes. In the Himalayas, the State of Sikkim and organizations such as Central Himalayan Action and Research Group (CHIRAG) and People Science Institute (PSI) started identifying and protecting spring recharge areas around 2007. The difference between these programmes and many other previous efforts is that they went beyond supply-side improvements to focus on the use of hydrogeology to map springsheds for targeted interventions.
The Advanced Centre for Water Resources Development and Management (ACWADAM), a research and capacity-building organization comprised of hydrogeologists and other experts began lending their expertise and building capacity of stakeholders. ACWADAM provides technical support, training and materials in hydrogeology to all network partners as well as others in India and the region. Similar programmes began independently in most of the mountain regions of India. Arghyam, a funding organization that was supporting many of these programmes, noticed that these disparate initiatives shared commonalities despite geographic diversity. They thus organized and funded a meeting of these various organizations in June 2014, and the Springs Initiative was born.
The springs initiative aims to tackle the current water crisis and to ensure safe and sustainable access to water for all, by promoting responsible and appropriate management of aquifers, springsheds, and watersheds and conserving ecosystems in partnership with communities, governments and other stakeholders.
This presentation has been developed as a part of the springs initiative to promote an understanding of springs and their role in mountainous areas.
Raw water should be treated to make it potable/fit for drinking. So a line of treatments should be followed to treat the water. After Coagulation and sedimentation the process of filtration and disinfection are followed.
BIS (Bureau of Indian Standards) –BIS is the National Standard Body of India established under the BIS Act 1986 for the harmonious development of the activities of standardization, marking and quality certification of goods and for matters connected therewith or incidental thereto.
Water quality is one of the most important factors in a healthy ecosystem. Clean water supports a diversity of plants and animals.
The quality of the water you consume or use in municipal or industrial processes must meet specific parameters to ensure that drinking water remains free from contaminants that could cause health issues.
Water quality measurements include physical, chemical, and biological parameters.
Water plays an instrumental role in the foundation of many of the world’s religions. Whether it is used as part of ritual cleansing and purification or embraced as a symbol of growth and fertility, the concept of water management and conservation is integral to the religious practices of many faiths.
The goal of this seminar is to rekindle our connection towards the sanctity of water, provide proactive tips that faith groups can use to increase awareness within their congregations and optimize the overall water efficiency of both our homes and institutions. The target audience will be faith communities and homes.
Water having different types of impurities e.g., soluble, insoluble, micro-organisms and gases. This presentation helps to understand how "insoluble impurities" can removes from water.
Agape Water Solutions, Inc. designs, manufactures, and services industrial-scale water purity systems. Agape Water specializes in water purification through the use of membrane and ion exchange resin based system including reverse osmosis systems. Agape Water Solutions also provides electrodeionization (EDI) solutions for use by OEM water treatment companies and end users such as power plants, pharmaceutic and other industrial manufacturers.
There are a variety of types of systems inculding: Vehicle wash, Chilled water systems, Heating, low, medium or high temperature, Closed loops in general and more.
A master plan or a development plan or a town plan may be
defined as a
general plan for the future layout of a city showing both the existing and
proposed streets or roads, open spaces, public buildings etc. A master
plan is prepared either for improvement of an old city or for a new
town to be developed on a virgin soil. A master plan is a blueprint for the
future. It is an comprehensive document, long-range in its view, that
is intended to guide development in the
township for the next 10 to 20 years.
For Environment Protection against harmful emisison and aquatic life, It is necessary to implement the standard in order to control the Chemcial Oxygen demand, Biological oxygen demand, Total suspended solid, Total dissolved solid, Oil & Greece Etc.
Process, characteristics, Composition and decomposition of sewage treatment plant. Case study of bharwara sewage treatment plant, lucknow. Asia's largest wastewater treatment plant.
This powerpoint covers all important topics regarding WATER.
Purification ,storage, chlorination and many more ....
For any queries contact @Deepacasm
E-mail :- Delphicneupane@gmail.com
2. PROCESSED INVOLVED IN TREATING THE RAW WATER:
IMPURITIES PROCESS USED FOR REMOVAL
Floating matters as leaves, dead
animals etc.
Screening
Suspended impurities as silt, clay Plain sedimentation
Fine suspended matters Sedimentation with coagulation
Microorganisms and colloidal
matters
filtration
Dissolved gases, tastes and odours Aeration and chemical treatment
Pathogenic bacteria Disinfection or chlorination
3. REQUIREMENTS OF WATER FOR DOMESTIC USE:
Water for domestic use should be:
• Colourless, clear, free form suspended solids.
• Free form odour, and taste good.
• Soft in nature.
• Free form disease producing bacteria or organisms.
• Free from objectionable dissolved gases, must contain a sufficient
quantity of dissolved oxygen.
• Free from objectionable minerals (iron, manganese, lead, arsenic and
other poisonous metals).
• Free form harmful salts.
4. WATER TREATMENT
• Water can be collected from various sources like rain, surface runoff,
river, lake, pond and ground water. It is not possible to find absolute
pure water in nature.
The primary objective of the water treatment and water purification is to,
• Treat the water collected from available source.
• Improving the quality of water
• Removing unpleasant taste and odour
• Removing of harmful matters (like bacteria etc.) from water.
5. IMPURITIES IN WATER ARE CLASSIFIED INTO:
Physical impurities
Chemical impurities
Biological impurities
6. Suspended impurities are macro or microscopic (varies according to its
origin or source) and normally remain in suspension, making the water
turbid.
Dissolved impurities are not visible, but cause bad taste, hardness and
alkalinity.
Colloidal impurities are electrically charged particles, usually very small
in size that remain in constant motion and do not settle.
7. TYPE CONSTITUENTS EFFECT
Suspended impurities Silts, bacteria, algae, protozoa Disease, odour, colour, turbidity
Dissolved impurities Salts Alkalinity, hardness
Metals and compounds Like (iron oxide)
Taste, red colour, corrosiveness.
Gases, vegetable dyes
Oxygen
Carbon dioxide
Hydrogen sulphide
Corrosiveness to metals, acidity,
odour,
9. Chemical Coagulation-Flocculation
Removes suspended particulate and colloidal substances from water,
including microorganisms.
Coagulation: colloidal destabilization
• Typically, add alum (aluminum sulfate) or ferric chloride or sulfate to
the water with rapid mixing and controlled pH conditions.
• Insoluble aluminum or ferric hydroxide and aluminum.
• These complexes entrap and adsorb suspended particulate and colloidal
material.
10. COAGULATION-FLOCCULATION, CONTINUED
Flocculation:
• Slow mixing (flocculation) that provides for for a period of time to
promote the aggregation and growth of the insoluble particles (flocs).
• The particles collide, stick together abd grow larger
• The resulting large floc particles are subsequently removed by gravity
sedimentation (or direct filtration)
• Smaller floc particles are too small to settle and are removed by
filtration
11. GRANULAR MEDIA FILTRATION
• Used to remove suspended particles (turbidity) incl. microbes.
• Historically, two types of granular media filters:
• Slow sand filters: uniform bed of sand;
• low flow rate <0.1 GPM/ft2
• Biological process: 1-2 cm “slime” layer (schmutzdecke)
• Rapid sand filters: 1, 2 or 3 layers of sand/other media >1 GPM/ft2
12. SLOW SAND FILTERS
• Less widely used for large US municipal water supplies
• Effective; widely used in Europe; small water supplies; developing
countries
• Filter through a 3- to 5-foot deep bed of unstratified sand
• flow rate ~0.05 gallons per minute per square foot.
• Biological growth develops in the upper surface of the sand is primarily
responsible for particle and microbe removal.
• Effective without pretreatment of the water by coagulation-flocculation
• Periodically clean by removing, cleaning and replacing the upper few
inches of biologically active sand
13. Microbial Reductions by Slow Sand Filtration
• Effective in removing enteric microbes from water.
• Virus removals >99% in lab models of slow sand filters.
• Up to 4 log10; no infectious viruses recovered from filter effluents
• Field studies:
• naturally occurring enteric viruses removals
• 97 to >99.8 percent; average 98% overall;
• Comparable removals of E. coli bacteria.
• Virus removals=99-99.9%;
• high bacteria removals (UK study)
• Parasite removals: Giardia lamblia cysts effectively removed
• Expected removals 99%
14. Microbe Reductions by Rapid Granular Media Filters
• Ineffective to remove enteric microbes unless preceded by chemical
coagulation-flocculation.
• Preceded chemical coagulation-flocculation & sedimentation
• Enteric microbe removals of 90->99 % achieved.
• Field (pilot) studies: rapid sand filtration preceded by iron
coagulation-flocculation: virus removal <50% (poor control?).
15. • Giardia lamblia: removals not always high; related to turbidity removal;
>99% removals reported when optimized.
• Removal not high unless turbidity is reduced to 0.2 NTU.
• Lowest removals shortly after filter backwashing
• Microbes primarily removed in filter by entrapped floc particles.
• Overall, can achieve 90% microbial removals from water when preceded
by chemical coagulation-flocculation.