Study on MOCO Process for Brewery Wastewater Treatment
|Keywords||MOCO process Nitrogen and phosphorus removal Beer Wastewater Sludge load Optimum operating parameters|
The MOCO process is a new type of nutrient removal process . On the basis of the OCO process , test analysis and improvement , the addition of a diversion wall to form an effective oxygen gradient , to further improve the efficiency of nitrogen . Of beer wastewater is also the source of water pollution , the higher concentration of organic pollutants , water quality and quantity fluctuations . For stable operation of the test process , the thesis the artificial simulation beer wastewater for the study. By the system of research and practice , and find the regularity of things , and thus be able to guide the optimization of the brewery wastewater treatment plant design and application . The primary research content : MOCO process analysis of the effect of organic matter , ammonia nitrogen and total nitrogen place ; determination of the optimum operating parameters ; the MOCO process to remove organics kinetics model . Drawn through the experimental study : MOCO reactor flow pattern function E (t) = 0.69e - 0.69t sup > , F (t ) = 1- e - 0.69t sup > ; the MOCO process HRT 8h, N s sub > the 0.41kg BOD 5 sub > / the ( kgMLSS · d ) the N v sub > 1.00kgBOD < sub> 5 / (m 3 sup> · d); sludge concentration MLSS maintained at a higher concentration of 4500mg / L and hydraulic retention time over 8h when the influent CODcr concentration varies between 1000-2000mg / L , organics removal is able to achieve more than 95% this shows that the the MOCO process has a strong impact ; even by a low temperature , when the hydraulic residence time not less than 8 hours , the the MOCO process NH 3 sub > -N , the average removal rates of TN maintained at more than 79% and 64% treated effluent can meet the beer industry emission standards ( GB19821 -2005 ) . This shows that the application of the Process beer wastewater is feasible . On an experimental basis , through the analysis of a large number of test data derived : sludge age in higher processing efficiency can be achieved in the 8-12d ; combination of the Monod equation ( ?) , The establishment of the dynamic model of the the MOCO handling beer wastewater for ( ? ) , the relevant coefficient R 2 sup > = 0.9735 .