水中微量有机物的活性炭深度净化技术研究

季民; 杨洁; 孙丽娜; 刘卫华; 张楠

水中微量有机物的活性炭深度净化技术研究

Study on removal micro-organic matter of water by activated carbon

摘要

摘要:
目的研究活性炭和臭氧活性炭工艺对水中微量有机物、消毒副产物的去除效果及其影响因素, 提高饮用水安全性。
方法对高藻期经预氯化处理的原水, 在常规净水工艺后, 采用活性炭及臭氧活性炭两种深度净水工艺进行中试处理。
结果活性炭对高锰酸钾耗氧量(CODMn)、氨氮(NH₄⁺-N)、UV₂₅₄(在254nm波长下水样的吸光度)三氯甲烷的平均去除率分别为66.6%, 50.1%, 94%;臭氧活性炭对其去除率分别为57.0%, 47.6%, 80%, 94.3%;色-质联机分析表明, 活性炭及臭氧活性炭可以控制和消除水中微量有机污染物, 保证供水水质的安全性。
结论在源水预氯化条件下, 单独活性炭比臭氧活性炭工艺的去除效果更好。O₃对活性炭吸附能力的影响不明显。

Abstract:
Objective To study the removal of micro-organic matter and disinfection by-products of water by activated carbon, and to ozonation and Activated car bon, and to guarantee the safety of drinking water.
Methods Activated carbon and ozonation fo llowed by activited carbon advanced treatment processes followingth conventional treatment were used for treating the high algae water pretreated by chlorine.
Results The aver age rates of removal of CODMn, ₄⁺-N, UV₂₅₄, and chloroform by activate carbon were 66.6%, 50.1%, 94% and 94.7%, respectively; The average rates of removal of them by O₃/activated carbon were 57.0%, 47.6%, 80%, 94.3%, respectively.Analysis was made by GC/MS method, which showed that two processes could eliminate the pollution and offered a safe drinking water.
Conclusion Under the condition of precholorination single activated carbon was better than ozonation and activ ated carbon, which indicated that O₃ affect the adsorption of activated carbon insignificantly.

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