PERFORMANCE ANALYSIS OF DEVELOPED REACTOR MODELS BASED ON VARIOUS TREATMENT TECHNOLOGIES FOR TREATMENT OF COMMUNITY WASTEWATER

摘要

The aim of the study was to treat the waste water from community (sewage), economically and efficiently at the source to use treated sewage for irrigation and gardening within the proximity of treatment unit. Present study was undertaken to suggest a treatment model which will be cost effective and suitable to toeat sewage at the source & reuse for gardening. Various experimental models based on the principle of attached growth, suspended growth, combination of attached and suspended growth and attached growth system with phytoremediation were developed. While developing the reactor models, efforts were directed to study and test the best suitable option for treatment of sewage at source. Every reactor under study was operated at optimum detention time and rotational speed for different reactor configurations, change in type of media and change of flow regime. The efforts were also made to evaluate the cost economics of various treatment units designed during the study and validate the results obtained during the course of study using mathematical modeling. The results obtained using experimental observations are validated using the mathematical modeling. It is observed that Model number 4 namely Modified Moving Bed Bio film Reactor under iteration I referred as Modified MBBR unit packed with three different artificial media in first compartment operated at detention time of 24 hours and rotational speed of 12 RPM is the better performing model for BOD and COD removal efficiency.