What are the parameters of ETP?
➢ Whatever is the law, the parameters tested at ETP inlet point should be tested at ETP outlet point to assess if the water quality after treatment expected is achieved. pH, color, DO Temperature, COD and BOD (can be tested monthly if not possible weekly) Heavy metals, ammonia, chromium, etc.
What are wastewater parameters?
Wastewater parameters are used to determine the degree of water pollution. Pollution is defined as any alteration of the physical, chemical and biological properties of water, which is then called wastewater.
What are the parameters of effluent discharge?
parameters of the effluent do not exceed the permissible limits set out in the Second Schedule….
| Parameter | Unit | Maximum permissible limit |
|---|---|---|
| Nitrate as N | mg/l | 10 |
| Total Kjeldahl Nitrogen (TKN) | mg/l | 25 |
| Nitrite as N | mg/l | 1 |
| Aluminium | mg/l | 5 |
What are the parameters of sewage treatment plant?
This article discusses the treated parameters in the Sewage treatment plant (STP)….
| Parameter | Required Standards |
|---|---|
| pH | 6.5-8.5 |
| Suspended Solids | <10mg/l |
| Ammonia Nitrogen | <5mg/l |
| Fecal Coliform | <100 MPN/100ml |
What is COD and BOD in ETP water?
The biochemical oxygen demand (BOD) represents the amount of dissolved oxygen (DO) consumed by biological organisms when they decompose organic matter in water. The chemical oxygen demand (COD) is the amount of oxygen consumed when the water sample is chemically oxidised.
How do you calculate ETP sludge?
Calculation : The daily sludge mass produced = ( 100,000 ) ( 0.080 ) = 8,000 kg dry SS / day. Since 97 % MC is 3 % SC or approximately 30 kg dry SS / m 3 sludge, the daily volume produced is 8,000 / 30 = 267 m 3 .
What is the parameters of water treatment plant?
Discriminant analysis identified pH, petroleum, volatile phenol, chemical oxygen demand, total phosphorus, F, S, fecal coliform, SO4, Cl, NO3-N, total hardness, NO2-N and NH3 as important parameters affecting spatial variations.
What is meant by sludge volume index?
Sludge Volume Index (SVI) is used to describe the settling characteristics of sludge in the aeration tank in Activated Sludge Process. It is a process control parameter to determine the recycle rate of sludge.
What is BOD and COD parameters?
Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) are two of the most important parameters to characterise (measure the degree of pollution) of wastewater. BOD, the biological demand for oxygen a source of water has, is the amount of oxygen used by microorganisms to break down organic substances.
What is a good BOD level?
1-2 ppm
A BOD level of 1-2 ppm is considered very good. There will not be much organic waste present in the water supply. A water supply with a BOD level of 3-5 ppm is considered moderately clean.
What is TSS water?
These particles, or ‘solids’, can be divided into two types by passing the water through a filter. The particles that are large enough to be held back by the filter are called total suspended solids (TSS), while the particles that pass through the filter are called total dissolved solids (TDS).
How to handle ETP sludge?
Handling of ETP sludge should perform with PPE’s. Then follow the above relevant steps, then the equipment is ready for the next batch operation. Cleaning of discharge cock/tap and foot valve/check valve to perform (when required).
What are the sludge parameters?
Sludge parameters are the basis for the supervision and the construction of sludge treatment plants. They provide the enginieer with important notes over the existing (in-) organic portions, the settling behavior, the dewatering and the heat value of the sludge.
Can our ETP sludge be used to make bricks?
We took initiative if our ETP sludge could be used in making bricks. We ran this experiment with the help of a brick company. The brick company successfully made brick using the sludge. We sent this brick to BUET for compatibility test. Hopefully, the brick passed all the tests and it was no less than the ordinary bricks.
What is sludge from a chemical precipitation tank?
Sludge from chemical precipitation tanks is usually dark in colour, though its surface may be red if it contains much iron. Its odour may be objectionable, but not as bad as odour from sludge obtained from primary settling tanks. While it is somewhat slimy, the hydrate of iron or aluminium in it makes it gelatinous.