PILOT-SCALE STUDIES ON MBBR BASED NUTRIENT REMOVAL SYSTEM

Abstract

This study concert with investigation of performance of MBBR with PVA gel based as biomass carriers reactor at different retention time(HRT) and different temperature .Experimental studies for nutrient removal by lab-scale moving bed bio reactor was investigated .For nutrient removal MBBR was applied in series of anerobic ,anoxic and aerobic units in four separate reactors and were operated at different loading rate of phosphorus and nitrogen and different hydraulic retention time .In this operational process water quality parameter are measured in individual chambers of the EBPR process by using hybrid, soft-sensor as a cost effective monitoring and real time estimation of phosphate, nitrogen and COD concentration in different aerobia and anerobic chambers of multistage EBPR pilot plant. . Denitrification rate is increased with increasing nitrate (NO3) loading in the second anoxic reactor. HIAS (Hamar, Norway) EBPR base MBBR reactor for phosphorus removal whose efficiency is very good above 90%. EBPR process is based on polyphosphate(poly-p) accumulating organism (PAOs) enhanced in activated sludge system. Biological phosphorus removal (bio P) from wastewater is achieved with activated sludge processes. Bio-P processes with the biofilm, such as moving bed biofilm reactors (MBBR) or fixed film reactors, are not yet in use in full-scale but research is ongoing. MBBR process used for removal of organic source, nitrogen. By using MBBR reactor we can attain high efficiency and a good capacity in wastewater treatment plant. However, the biological phosphorus removal process requires altering of anaerobic and aerobic conditions causing challenges in the process design.