MBR工艺处理PTA废水的工业化模拟试验

Industrialized simulating test of PTA wastewater treatment by MBR process

介绍了某PTA企业生产废水的处理现状以及采用MBR工艺改造废水处理系统的工业化模拟试验。包括MBR的启动和污泥的驯化,以及在不同的CODCr负荷下的运行情况。当污泥的质量浓度在6.5g/L左右,溶解氧质量浓度控制在2mg/L,HRT在15h时,CODCr的平均去除率能达到93.80%;氨氮和总磷的平均去除率达到90.28%和89.37%。试验期间,还考察了非常态下膜的污染耐受性以及微生物的恢复能力。

The current status of PTA wastewater treatment in a corporation and the industrilized simulating test of MBR process in the reconstruction of wastewater treatment system were introduced. The test included the start-up of the MBR system, the domestication of the sludge, and the running situation of the process under different CODCr loadings. When the mass concentration of the sludge and the dissloved oxygen were about 6.5 g/L, 2 mg/L respectively, the HRT was 15 hours, the average removal rate of CODCr, ammonia nitrogen, TP reached 93.80%, 90.28%, and 89.37% respectively. The anti-fouling performance of the membrane and the recoverability of the microoganism under special condition were also observed during the test.