Process is not given. Most of ...
Published by Rajendrakumar Saraf
Process is not given. Most of the time flow in conventional STP is by gravity from screen chamber to the treated sewage storage tank.
Valves are mainly required on following pipe lines
- Raw sewage pump delivery line
- Sludge handling pipe line for primary clarifier
- Re-circulation line for re-circulation of water from Secondary clarifier to aeration tank
If IL of sewer line is far below the ground level then sewage is pumped from sewage sump to the first unit operation.
Performance of motorized and pneumatic valve is good. Selection of the valve depends on site condition.
I personally preferred butterfly valve for sewage & sludge handling.
Prof. Rajendrakumar V Saraf