利用中空纤维膜对单独净化槽的改造研究

Research on Remolding of Household Wastewater Treatment Tank using Hollow Fiber Membrane

分别进行了单独净化槽和用中空纤维膜改造后的单独净化槽处理生活污水的试验研究。结果表明：单独净化槽对ＣＯＤ的去除效率在８０％左右，对ＮＨ＋４－Ｎ的去除率大约在５０％～６０％。加膜改造后装置对ＣＯＤ的去除效果可达９０％左右或更高，并且可实现９０％以上的ＮＨ＋４－Ｎ去除效果。膜对有机颗粒与分子的拦截作用使改造后装置出水ＣＯＤ指标不受冲击负荷的影响。ＮＨ＋４－Ｎ由于需较长的反应时间且无法被膜拦截。

Abstract The research on household wastewater treatment tank (HWTT) of prototype and remolded type with hollow fiber membrane were carried out. Results show that the removals of COD and NH 4-N are 80% and 50-60% respectively for the prototype. For the remolded type, the removal rates of both COD and NH 4-N are 90% or higher. Depending on the separation of organic particles and molecules by the membrane the COD removal for the remolded type is independent to the shock loading but however the NH 4-N removal is evidently effected by the shock loading because the NH 4-N can not be caught by the membrane because much reaction time is demanded.