Oxidation Ditches or Pasveer Ditches
This method of treating sewage was developed by Dr. Pasveer In Netherlands by treating raw sewage from small communities. No primary treatment is required…
Category: Sewage Treatment
REMOVAL OF SILICA
Water Treatment of Silica Natural waters, generally, contain about 5-8 mg/l of silica (Si0,). Another important source of silica in water is the sand…
BIOLOGICAL OXYGEN DEMAND
Sewage Water Analysis BOD The presence of free oxygen is necessary for the livelihood of organisms present in the sewage water The aerobic action…
AEROBIC& ANAEROBIC OXIDATION
OXIDATION PROCESS IN SEWAGE WATER Types of Bacterias in Sewage Aerobic Bacteria Anaerobic Bacteria Sewage water (wastewater ) consist of both aerobic bacterias and…
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Extended Aeration System
The extended aeration process is one of the modifications of the ASP. It is a complete mix system and provides biological treatment for the…
Small Diameter Gravity Sewers
Sewers Small diameter gravity sewerage (SDGS) also known as settled sewerage and solid free sewerage, is a system for conveying domestic wastewater which has…
Toxic Heavy metals in Sewage
Sewage Water Treatment Some metals compounds level only are essential to live for animal, Plant and human being. Out of that metal compounds are …
Sewer Pipe Selection by Operation
Operational considerations. Septicity and dangerous gases: Septicity occurs when sewage is retained in the sewers for extended periods in unaerated conditions. Hence, special corrosion…
Design Sewage Flow
Design sewage flow is the expected maximum discharge in the sewer during the life of the system. This is arrived by multiplying the population…
Typical characteristics of wastewater
Table A lists the characteristics of domestic wastewater of different strengths. The strength of the domestic wastewater varies with the per capita water supply…