The document discusses self-purification of streams, where wastewater discharged into rivers and streams is naturally purified over distance as organic matter is broken down and dissolved oxygen levels increase. It explains that biochemical oxygen demand initially increases and dissolved oxygen decreases near discharge points, but that over distance bacterial action reduces organic matter and increases oxygen saturation. Various natural processes involved in self-purification are dilution, dispersion, sedimentation, oxidation, reduction, temperature, and sunlight.
Here you will get all information about sewer design, its type & various tests carried out on it for any leakage or any obstruction present and of improper joints.
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants. Most industrial processes, such as petroleum refineries, chemical and petrochemical plants have their own specialized facilities to treat their wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or into rivers, lakes or oceans.
Hydraulic Design of Sewer:
Hydraulic formulae, maximum and minimum velocities in sewer, hydraulic
characteristics of circular sewer in running full and partial full conditions,
laying and testing of sewer, sewer appurtenances and network.
Here you will get all information about sewer design, its type & various tests carried out on it for any leakage or any obstruction present and of improper joints.
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants. Most industrial processes, such as petroleum refineries, chemical and petrochemical plants have their own specialized facilities to treat their wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or into rivers, lakes or oceans.
Hydraulic Design of Sewer:
Hydraulic formulae, maximum and minimum velocities in sewer, hydraulic
characteristics of circular sewer in running full and partial full conditions,
laying and testing of sewer, sewer appurtenances and network.
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
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
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This presentation is made with a view to introduce various units & processes carried out in water treatment plant with various trains or say chains of units to meet Indian Standard criteria.
This presentation includes the basic introduction to sewage/ wastewater, quantity estimation, the basic terms commonly used in the sewerage system, Types of sewer, sewage, and sewerage system.
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
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
This presentation includes the estimation of storm sewage generated as a result of storm/rainfall events. It includes the detailed usage of rational formula for quantity estimation with solved examples.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
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
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
WATER & WASTE WATER ENGINEERING - water treatment process & unitsEddy Ankit Gangani
This presentation is made with a view to introduce various units & processes carried out in water treatment plant with various trains or say chains of units to meet Indian Standard criteria.
This presentation includes the basic introduction to sewage/ wastewater, quantity estimation, the basic terms commonly used in the sewerage system, Types of sewer, sewage, and sewerage system.
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
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
This presentation includes the estimation of storm sewage generated as a result of storm/rainfall events. It includes the detailed usage of rational formula for quantity estimation with solved examples.
Lecture notes of Environmental Engineering-II as per Solapur university syllabus of TE CIVIL.
Prepared by
Prof S S Jahagirdar,
Associate Professor,
N K Orchid college of Engg and Technology,
Solapur
Last February 17, 2012, the 2nd IIEE-CRCSA Technical Seminar kicked off with a good response from the members and non-members with the participation of more than 100 who showed-up at the White Palace Hotel, Riyadh, Saudi Arabia. Seminar title was “Basics of Indoor Lighting using DIALux”. The seminar was conducted by Engr. Michael T. Santiago, a Lighting Application & Design Engineer from Saudi Lighting Company. The participants were awed by his DIALux 4.10 software demonstration specially when he imported a room layout from AutoCad drawing and applied the lighting calculation on it which later provided a very nice colored 3-D drawing of the room. A continuation of this seminar which is “Basics of Outdoor Lighting” will be presented on the incoming 14th Midyear Convention.
SOURCE: http://iiee-crcsa.org/index.php/9-news-articles/90-iiee-crcsa-second-technical-seminar-kicked-off
Wastewater treatment is a process used to remove contaminants from wastewater and convert it into an effluent that can be returned to the water cycle. Once returned to the water cycle, the effluent creates an acceptable impact on the environment or is reused for various purposes (called water reclamation).
03 - Computation of organic waste loads on stream, Streater Phelps equation.pptxPRACHI DESSAI
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment. Some industrial facilities generate wastewater that can be treated in sewage treatment plants. Most industrial processes, such as petroleum refineries, chemical and petrochemical plants have their own specialized facilities to treat their wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or into rivers, lakes or oceans.
The study of the source of disposal is important because the amount of treatment required to be given to sewage depends very much upon the source of disposal, its quality, and capacity to tolerate the impurities present in the sewage effluents, without itself getting potentially polluted or becoming less useful.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
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The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Cosmetic shop management system project report.pdf
self purification of streams Seminan ppt
1. Swami Keshvanand Institute
of Technology
Management & Gramothon
A Presentation on Self Purification Of
Streams
By:-
Bhanwar Singh Hada
2. What is Self Purification Of Streams?
When wastewater is discharged into the river or
stream, the BOD of mix increases initially and DO
level starts falling.
As river water travels further BOD gradually
reduces and DO increases and reaches its
saturation level.
Thus river gets purified on its own.
This phenomena is known as self purification of
stream.
3.
4. Disposal By Dilution
Disposal by dilution is a process in which the
treated waste water from ETPs is discharged into
a large static body of water or in a moving water
body such as rivers or streams.
The discharged wastewater is purified in due
course of time, by the self purification of natural
water.
The effluent discharge and degree of treatment
of wastewater depends upon the self purification
capacity of the stream and its intended water
use.
5. Conditions favouring dilution without
treatment
Where wastewater is quite fresh.
SS has been removed from wastewater.
The volume of receiving body is more than the
wastewater discharge.
Dilution water having high DO, to satisfied the
BOD of wastewater.
Where Swift forward currents are available.
Wastewater does not contain toxic substances.
Water is not used for drinking immediately after
point of discharge.
6. Standards of dilution
Dilution factor Standards of purification required
Above 500 No treatment required. Raw sewage can be
directly discharged into river
Between 300 to 500 Primary treatment such as PST is
required so that SS concentration is less
than 150 mg/lit
Between 150 to 300 Treatment such as screening,
sedimentation and chemical precipitation
are required so that SS concentration is less
than 50 mg/lit
Less than 150 Thorough treatment is required, SS
should be less than 50 mg/lit and BOD 5
should be less than 20 mg/lit
7. 1. DILUTION
2. DISPERSION DUE TO CURRENT
3. SEDIMENTATION
4. OXIDATION
5. REDUCTION
6. TEMPERATURE
7. SUNLIGHT
ACTIONS INVOLVED IN SELF PURIFICATION
OF STREAMS
8. 1. Dilution
When the wastewater is discharged into the
receiving water, dilution takes place due to which
the concentration of organic matter is reduced
and the potential nuisance of sewage is also
reduced.
When the dilution is quite high, large quantities
of DO are always available which will reduce the
chance of putrefaction and pollutional effects.
Aerobic conditions will always exist because of
dilution.
9. 2. Dispersion due to currents
Self purification largely depends upon currents,
which readily disperses wastewater in the stream,
preventing locally high concentration of
pollutants.
High velocity improves aeration which reduces
the concentration of pollutants.
High velocity improves reaeration which reduces
the time of recovery, though length of stream
affected by the wastewater is increased.
10. 3. Sedimentation
If stream velocity is lesser than the scour velocity
of particles then sedimentation will takes place,
which has two effects:
1. SS contribute largely to BOD will be removed by
settling and hence downstream water quality
will be improved.
2. Due to settled solids anaerobic decomposition
may take place.
11. 4. Oxidation
The organic matter present in the wastewater is
oxidized by aerobic bacteria utilizing dissolved
oxygen of the natural waters.
This process continues till complete oxidation of
organic matter takes place.
The stream which is capable of absorbing more
oxygen through reaeration etc can purify heavily
polluted water in short time.
12. 5. Reduction
Reduction occurs in the stream due to hydrolysis
of organic matter biologically or chemically.
Anaerobic bacteria will split the organic matter
into liquids and gases, thus paving the way for
stabilization by oxidation.
13. 6. Temperature
At low temp activity of bacteria is low., and hence
decomposition is slow., though DO will be more
because increased solubility of oxygen in water.
At higher temperature purification will take lesser
time though amount of DO is less in the water.
14. 7. Sunlight
Sunlight helps certain micro-organisms to
absorb CO2 and give out oxygen, thus
resulting in self purification.
Sunlight acts as disinfectant and stimulates
growth of algae which produces oxygen during
photosynthesis.
Hence wherever there is algal growth water
contains more DO during daytime.
17. 1. Zone of degradation
Situated just below outfall sewer.
Water is dark and turbid with sludge at the
bottom.
DO reduces up to 40% of saturation level.
CO2 content increases.
Reaeration is slower than deoxygenation.
Conditions are unfavorable for aquatic life.
Anaerobic decomposition takes place in this
zone.
18. 2. Zone of active decomposition
Water in this zone becomes grayish and darker
than previous zone.
DO concentration falls to zero.
CH4, H2S, CO2 and N2 are present because of
anaerobic decomposition.
Fish life is absent but bacteria are present.
At the end of this zone DO rises to 40% of
saturation.
Aquatic life starts to reappear.
19. 3. Zone of recovery
Process of recovery starts.
Stabilization of organic matter takes place in this
zone.
BOD falls and DO content increases above 40%
value.
NO4, SO4 and CO3 are formed.
Near the end of this zone entire aquatic life
reappears.
20. 4. Clear water zone
Water becomes clearer and attractive in
appearance.
DO rises to saturation level.
Oxygen balance is attained.
Recovery is complete.
Some pathogenic microorganisms may be
present.
24. When pollutional load is discharged into the
stream, DO goes on reducing. This process is
known as deoxygenation.
It depends upon organic matter present and
temperature.
The variation or depletion of DO is represented
graphically by deoxygenation curve.
25. At the same time oxygen gets added into the
stream through various processes such as
photosynthesis, rains etc.
The curve representing oxygen gaining process is
known as Reoxygenation or reaeration curve.
In a running polluted stream deoxygenation and
reaeration processes go hand in hand.
Deoxygenation is more deficit results.
26. The amount of DO deficit can be obtained by
graphically adding both the curves. The
resultant curve is known as ‘DO sag curve’.
DO deficit is given by
DO deficit = saturation DO – Actual DO
= DO sat - DO act
Streeter Phelps equation can be used for
analysis of DO sag curve.