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引用本文:袁文权,张锡辉,张丽萍.不同供氧方式对水库底泥氮磷释放的影响.湖泊科学,2004,16(1):29-35. DOI:10.18307/2004.0104
YUAN Wenquan,ZHANG Xihui,ZHANG Liping.Effects of Different Oxygenation Treatments on the Release of Nitrogen and Phosphorus from Reservoir Sediments. J. Lake Sci.2004,16(1):29-35. DOI:10.18307/2004.0104
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不同供氧方式对水库底泥氮磷释放的影响
袁文权, 张锡辉, 张丽萍
清华大学深圳研究生院环境工程与管理研究中心, 深圳 518057
摘要:
采用实验室模拟试验,研究了三种供氧方式——曝气、投加过氧化氢和投加过氧化钙对水库底泥氮磷释放的影响.研究结果表明:(1)溶解氧是控制底泥氮磷释放的重要因素,厌氧条件能加速底泥释放磷和氨氮;(2)曝气、投加过氧化氢和投加过氧化钙均能显著提高底部水体的溶氧水平,并能有效抑制底泥氮磷的释放.三种供氧方式对底泥释磷的控制效率依次为:投加CaO2 >曝气 >投加H2O2;对氨氮释放的控制效率则为:曝气 >投加CaO2 >投加H2O2.
关键词:  底泥  氮磷释放  厌氧  充氧
DOI:10.18307/2004.0104
分类号:
基金项目:国家863计划"南方地区安全饮用水保障技术"(2002AA601120);深圳市水务局资助项目"深圳市西沥水库内源污染调查与研究"
Effects of Different Oxygenation Treatments on the Release of Nitrogen and Phosphorus from Reservoir Sediments
YUAN Wenquan, ZHANG Xihui, ZHANG Liping
Research Center for Environmental Engineering. Management, Shenzhen Graduate School, Tsinghua University, Shenzhen 518057, P.R.China
Abstract:
This paper investigated effects of three oxygenation methods -aeration, hydrogen peroxide doses and calcium peroxide doses-on the release of N and P from reservoir sediments under simulated conditions.The results showed that: (1)Dissolved oxygen is the main parameter controlling the release of N and P;anaerobic condition can stimulate the release of NH4g and P from reservoir sediments.(2)Aeration, H2O2 doses and CaO2 doses can generally enhance the DO levels in the hypolimnetic water body.Both N and P release from sediments were inhibited under these three treatments.In laboratory studies involving three different oxygenation methods, the efficiency of the control of phosphorus release was in the order of CaO2 dosesiaera-tion>H2O2 doses, while the efficiency of the control of ammonia was in the order of aerationi CaO2 doses>H2O2 doses.
Key words:  Sediment  nitrogen and phosphorus release  anaerobic  oxygenation
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