接触过滤—活性炭吸附—超滤一体化净水装置处理长江原水的研究

Study of Yangtze River raw water purification by integrated contact filtration-activated carbon adsorption-UF process

试验采用接触过滤—活性炭吸附—超滤工艺处理长江原水。结果表明,接触过滤能有效地去除较大悬浮物,活性炭能吸附水中大量有机物,有效防止膜污染。并且用0.4%的HCl和0.4%的NaOH对膜进行化学清洗,能使膜的过滤性能得到很好的恢复。当原水平均浊度为114.8NTU、氨氮为0.35mg/L、TOC为2.47mg/L、CODMn为2.7mg/L、细菌数为700CFU/mL时,工艺出水浊度为0.07NTU、氨氮为0.09mg/L、TOC为0.3mg/L、CODMn为0.88mg/L、细菌总数为0。

Integrated process of contact filtration-activated carbon adsorption-UF was adopted to purify the raw water from Yangtze River. The results showed that contact filtration could remove biggish suspended substance effectively and activated carbon can adsorb substantive organic substances, so the efficiency of the membrane was protected from polluting. And the filtration capability of membrane can be well recovered by 0.4% HCl and 0. 4% NaOH. While the average value of influent concentration of turbidity, NH3- N, TOC, CODMn and bacterium was 114. 8 NTU, 0. 35 mg/L , 2. 47 mg/L , 2. 7 mg/L, 700 CFU/mL, and the effluent was 0. 07 NTU, 0.09mg/L, 0. 3 mg/L, 0.88 mg/L and 0 respectively.