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In order to solve practical chemical paste this cleaning wastewater treatment problem, use a Shanghai business process raw materials (chemical paste) with clean water simulation biodegradability of wastewater treatment process. Chemical cleaning paste and textile desizing wastewater water is water containing high organic pollutants, the main component is a modified starch and PVA. PVA biochemical degradation is relatively low, in the natural environment, biodegradable PVA microorganisms is very small, usually only occurs in the PVA polluted environment, thus the waste water are relatively tricky. For this feature, I consider the mature reference wastewater treatment process, choose the coagulation-UASB-SBR combined technology for wastewater laboratory small test by performing coagulation pretreatment to improve the biodegradability of wastewater for subsequent biological treatment, to achieve \This test is to determine the quality of the treatment effect of CODCr as the main indicator. The results showed that the best conditions for coagulation pH 2, the best choice of pharmaceutical, adding order and put the amount of sodium sulphate 2g, boric acid 0.3g, calcium hydroxide 3g. Materialized removal lower (70%), and the effluent discharge limit can not be done, but after coagulation treatment B / C from the pre-treatment increased to 0.26 0.34 to improved knowledge of cleaning wastewater biodegradability, can be used as biochemical pretreatment method. This paper studies focus on biochemical methods, and focus on optimizing the use of UASB anaerobic granular sludge wastewater treatment to improve the capacity and efficiency. Respectively, through the use of anaerobic granular sludge and digested sludge as inoculum general to examine the reactor sludge removal, indicating stable UASB granular sludge technology for cleaning wastewater treatment efficiency is significantly improved, the maximum volumetric loading VLR reach 9.11kgCOD / m ~ 3 · d, COD removal rate remained at 90%, water pH value of 7.5, the effluent SS is 135 mg / L, volume of gas production was 3.37m ~ 3 / m ~ 3 · d, water quality and facilitate the subsequent aerobic biological treatment. After SBR process, the maximum volume load up 9.6kgCOD / m ~ 3 · d, water maintained at 100mg / L or less, to achieve two effluent discharge standards. In granular sludge UASB reactor treating chemical wastewater cleaning paste, the investigated species of sludge, hydraulic loading Vup, pH, temperature, hydraulic retention time, the reactor load impact on water quality. The results showed that the use of coagulation-UASB-SBR Combined Process wastewater chemical cleaning paste is practical and feasible solutions. Thesis results for anaerobic granular sludge process used to improve processing efficiency, with theoretical and practical significance.
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