水解酸化-A^(2)/O生物处理混合废水的应用分析

Analysis on Application of Hydrolytic Acidification of A^(2)/O on Biological Treatment of Mixed Wastewater

以新疆某污水厂混合型来水为研究对象,分析改造A^(2)/O工艺在不同温度、污泥回流比(R)等条件下对原水的去除效果。结果表明:与Ⅰ期(11月)相比,Ⅱ期(12月)R呈跳跃式波动,TP、NH_(4)^(+)-N和TN去除率分别降低13.38%、26.89%和11.77%,随Ⅲ期(3月)温度升高,TP去除率达到92.70%,而NH_(4)^(+)-N和TN去除率分别降低11.58%和28.64%。建议冬季提高污泥浓度并适当投加碳源,同时还应考虑污泥龄与R之间的协调关系。

Taking mixed incoming water from a sewage plant in Xinjiang as the research object,the removal effect of modified A^(2)/O process on raw water was analyzed under different conditions such as temperature,sludge reflux ratio(R).The results showed that compared with the stageⅠ(November),R in stageⅡ(December)showed a jump fluctuation,and the removal rates of TP,NH_(4)^(+)-N and TN decreased by 13.38%,26.89%and 11.77%,respectively.With the temperature increasing in stageⅢ(March),the remove rate of TP reached 92.70%.The removal rates of NH_(4)^(+)-N and TN decreased by 11.58%and 28.64%,respectively.It was suggested to increase sludge concentration and add carbon source appropriately in winter,and the coordination between sludge age and R should also be considered.