活性炭及联用工艺去除自来水中有机物的效果

Organic Removal from Tap Water by Activated Carbon and Combined Process

为保证直饮水水质并提高其安全性,采用AC、O3/AC、UV/AC、O3/UV/AC工艺对自来水进行处理,考察4种工艺对水中微量有机物的去除效果和O3/AC、UV/AC工艺出水的生物遗传毒性及水质的生物稳定性。结果表明,O3/AC工艺对TOC的去除率最高(44.85%),其他3种工艺对TOC的去除率均在38%以上;AC工艺对UV254的去除率最低(23.96%),其他3种工艺对UV254的去除率均高于70%。4种工艺对THMs的去除效果差异不明显,去除率均在40%左右;O3/AC和UV/AC工艺对THMFPs的去除效果好于其他2种工艺的。O3/AC和UV/AC工艺均能保证出水的β-半乳糖苷酶的被诱导活性为阴性,并可保证出水的生物稳定性。

In order to guarantee the high quality of direct drinking water and improve its safety,AC,O3/AC,UV/AC and O3/UV/AC processes were applied to treat the tap water.The removal effects of trace organics in water by the four processes were investigated,and the biological genetic toxicity and biostability of the outflow water from O3/AC and UV/AC processes were also investigated.The results show that the TOC removal rate by O3/AC process is 44.85% which is the highest among the four processes,and the TOC removal rates by the other three processes are all more than 38%.The UV254 removal rate by AC process is 23.96% which is the lowest among the four processes, and the UV254 removal rates by the other three processes are all above 70%.There is no evident difference of THMs removal effect by the four processes,and the removal rates are all about 40%.The THMFPs removal effect by O3/AC and UV/AC processes are better than that by the other two processes.The O3/AC and UV/AC processes can guarantee that the inducement activity of β-galactosidase of the outflow water shows negative,and also can guarantee the biostability of the outflow water.