The methods that use biological processes for wastewater treatment are called biological methods. In these methods, microorganisms (especially bacteria) play a major role in the treatment process because they use their internal mechanisms to absorb organic matter in the wastewater and use it to produce new cells and gain energy.
Because a major proportion of wastewater pollutants are organic matter, the use of biological methods for wastewater treatment is now widely used. Biological methods are able to treat a wide range of pollutants at a low cost.
3-1 Conventional activated sludge method
This method is one of the most widely used biological methods in treatment Types of sanitary wastewater and industrial wastewater treatment. The biological process in this method is aerobic in which the growth of microorganisms is suspended.
This method is generally used in cases where the volume of wastewater entering the treatment plant is high and therefore special facilities and equipment Is considered for dewatering and digestion of sludge. , Sbr wastewater treatment process, mine effluent treatment process, semi-industrial water treatment, wastewater treatment, villa wastewater treatment, septic tank
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