Trickling filters are either rectangular or circular in shape and about 2 m deep. They are filled either with coarse, crushed rock or large anth­racite coal or blast furnace slag or broken bricks or graded...

Screening Designs & Types As per the Design and cleaning and depending upon the size of opening Screen may be classified Coarse Screens Medium Screens Fine Screens Coarse Screens are also called Racks...

screening is very first stage carried out at a waste water (sewage) sludge Treatment plant and consist of passing the Sewage Water through different Types & Design of Sewage Plant Screening like Coarse...

The artificial sewage treatment ( Waste water treatment ) process, called sewerage, involves the following steps : (1) Preliminary process causes removal of large and coarse solids, inorganic...

Activated Sludge Process is based on the principle that : (i) adequate amount of oxygen or air is passed through sewage containing aerobes. Complete aerobic oxidation occurs, though slowly. However, if this...