暴雨期东江高污染水源硝化菌促生强化生物预处理技术研究  

STUDY OF PRETREATMENT TECHNOLOGY ABOUT BIOLOGICAL PROMOTING NITRIFYING BACTERIA FOR HIGH POLLUTION SOURCE IN DONGJIANG RIVER DURING STORM PERIOD

作　　者：胡常浩[1] 陆少鸣[1] 

机构地区：[1]华南理工大学环境科学与工程学院,广东广州510006

出　　处：《水处理技术》2013年第2期22-25,共4页Technology of Water Treatment

摘　　要：对于暴雨期东江突发性高污染原水,在东莞某水厂采用高速给水曝气生物滤池(HUBAF)进行强化生物预处理中试研究,滤速16 m/h,气水体积比0.5:1。结果表明,在原水氨氮质量浓度较低时,试验系统最终出水氨氮相对于原水的去除率高达90.63%,同期水厂出厂水仅为64.06%。在原水氨氮质量浓度突发性升高时,采用硝化菌促生强化生物预处理技术,HUBAF对高氨氮污染能够及时发挥其生物净化作用,在2次氨氮高峰期间,相对于原水的氨氮去除率分别为89.80%和90.28%,中试系统出水氨氮含量远低于水厂出水。滤池采用气水联合反冲洗,冲洗前后过滤水头变化量<1.0 kPa,反冲洗周期可达72 h,氨氮、CODMn等指标出水完全符合《生活饮用水卫生标准》(GB5749-2006)要求。On account of the sudden high pollution in Dongiiang river during a rain storm, a pilot scale test was conducted by using high rate up-flow aerated filter （HUBAF） for biological pre-treatment in a certain waterworks of Dongguan, with a filtration rate of 16 m/h and a gas-water ration of 0.5：l. Results showed： 90.63% and 64.06% removal rate of NH3-N were achieved in the test effluent and waterworks effluent respectively under a low concentration of NH3-N in flae raw water. When the NH3-N content increased rapidly, it can be well removed by HUBAF after using a stimulation nitrifying bacteria growth technology to enhance the biological pretreatment, which was far better than the waterworks, 89.80% and 90.28% removal rate of NH3-N were achieved in the HUBAF unit respectively during 2 storm periods. The head loss variation was lower than 1.0 kPa before and after backwash under the gas-water combined backwash system, and the backwash period can be up to 72 h. Both the NH3-N and the CODMn in the final water satisfied the requirement of hygienic standard of drinking water（GB 5749--2006）.

关 键 词：高速给水曝气生物滤池 氨氮 强化生物预处理 突发性高污染 

分 类 号：TU991.1[建筑科学—市政工程]