过氧化钙在城镇黑臭水体修复中的作用

doi:10.16085/j.issn.1000-6613.2016.s2.061

摘要/Abstract

摘要： 我国城镇水体污染严重，本文根据城镇黑臭水体污染与生态修复治理技术现状，分析得出水体缺氧是导致城镇水体黑臭污染的主要原因以及复氧措施在治理黑臭水体时的重要性，介绍了水体原位复氧具有对水体扰动小、修复效果明显和不产生二次污染等优点，但常规复氧措施存在工程规模大、设备运行昂贵和后期仪器维护贵等问题。结合CaO₂在黑臭水体原位治理过程的高效释氧、强化微生物活性及释放羟基自由基等特性，简述了CaO₂对黑臭水体中有机物、重金属、氮磷营养元素及硫化物等污染物的去除机理与修复效果；通过归纳CaO₂在黑臭水体修复过程中的不足，建议在CaO₂对污染物的降解机理和缓释型CaO₂复合释氧剂等方面应加强研究；指出缓释型CaO₂复合释氧剂在城镇黑臭水体生态修复治理中具有重要实际意义。

关键词: 黑臭水体, 过氧化钙, 需氧, 原位修复

Abstract: Based on the current situation about black and odorous water and the technology of ecological restoration in towns of our country.The primary cause of black and odorous waste water is hypoxia status in water and the important of reoxygenation measures in repairing black and odorous water are obtained.The advantages of in-situ remediation are introduced,such as little disturbance、result is obvious and does not have secondary pollution in water,but the weakness about needing a large scale project,high price and cost of daily operating and maintain of conventional reoxygenation measures are shown.The effect of CaO₂ on releasing oxygen efficiently,intensifying the microbial activitily and releasing hydroxyl radicals in restoring the black and odorous water.The removal mechanism and the remediation effect of CaO₂ on organic matters,heavy metals,nitrogen and phosphorus nutrition elements and sulfide in black and odorous water are illustrated.The disadvantage of the black and odorous water restored by CaO₂ were summared.The mechanism of degradation to pollutants by CaO₂,sustained-release compound oxygen release agent are suggested to be more researched.The importance of sustained-release of CaO₂ in practical significance is proposed.

Key words: black and odorous waste water, calcium peroxide, aerobic, in-situ remediation

中图分类号:

X522

李亮, 武成辉, 陈涛, 林翰志, 晏波, 肖贤明. 过氧化钙在城镇黑臭水体修复中的作用[J]. 化工进展, 2016, 35(S2): 340-346.

LI Liang, WU Chenghui, CHEN Tao, LIN Hanzhi, YAN Bo, XIAO Xianming. Effect of calcium peroxide on the restoration of black and odorous water in towns[J]. Chemical Industry and Engineering Progree, 2016, 35(S2): 340-346.

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