ABSTRACT
Seasonal variation, storm water intrusion, ambient temperature etc. are the factors which affects the waste water quality due to which it is difficult to define the quality of wastewater. Wastewater Quality Index (WWQI) is a unit less number ranging within 1 to 100 and able to indicate overall characteristic of wastewater. This index helps to have a competent model to optimize the treatment processes. Present work deals with determination of wastewater quality index using fuzzy rule base approach. Three wastewater treatment plants were studied for a span of a year. Characterization was carried out on the basis of Temperature, Total dissolved solid (TDS), Suspended Solid (SS), Biological oxygen demand (BOD), Chemical oxygen demand (COD), Phosphate, Chloride (Cl–), pH Sampling and characterization was carried out as per APHA guideline. WWQI was defined in the range of class 1 to class 5.
