METHODS OF SEWAGE TREATMENT IN THE BIOLOGICAL WAY

The biofilter comprises a housing in which the waste water is circulated in the presence of air to promote biological purification. The microorganisms that form the biofilm, oxidize organic matter, using them as a source of food and energy. Thus the organic substances are removed from the waste water and the mass of the microorganisms are increased so increasing the efficiency of the biofilter. The cleansed water is then able to flow out of the biofilter housing. One way of intensifying the clarification process, is to use separate biofilters for saturated and unsaturated waste water and to use clarifiers to remove the suspended sludge layer