Read this article to learn about 8 Measures to Control Water Pollution ! There are several measures by which the water quality in a system can be controlled (Thomann and Mueller, 1987). Some of these are: 1. Reducing the effluent concentration of the waste input by: (a) Wastewater treatment (b) Industrial in-plant process control (c) Eliminating effluent constituents by pretreatment [...]
(I) Effect Of Sewage And BOD Problem: The sewage and other organic matter discharged to a water body are degraded by oxygen-requiring micro-organisms. The amount of oxygen consumed by the microbes is the Biochemical Oxygen Demand (BOD). BOD is an indication of the presence of sewage and other organic wastes. After the addition of organic wastes, several zones may be [...]
In using water as a metabolic raw material, organisms withdraw it mainly from the hydrosphere. Aquatic animals absorb water directly from their liquid environment. They excrete some of it back while alive and after death the remaining water is returned through decay. Terrestrial animals absorb water from the reservoir present in soil and in bodies of fresh water. Animals and [...]