| 改型生物砂滤池防治滤料堵塞的实验研究 |
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| 引用本文： | 宁宇,李义连,吕凤兰.改型生物砂滤池防治滤料堵塞的实验研究[J].环境科学与技术,2011,34(8):34-37,94. |
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| 作者姓名： | 宁宇 李义连 吕凤兰 |
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| 作者单位： | 中国地质大学(武汉)环境学院,湖北武汉,430074 |
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| 基金项目： | 湖北省重大科技攻关项目(2006AA305A01) |
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| 摘 要： | 构筑初滤池并添加灰岩颗粒作为滤料,研究改型生物砂滤池的防堵效果.结果表明,初滤池对污水中悬浮物去除率可达到75％以上,能有效缓解由难降解物质引起的滤料板结与堵塞;在实验初期加强复氧、降低进水有机污染负荷的情况下,含50％灰岩的滤池出水pH值平均为7.58,水力负荷平均为2.05 m/d,稳定运行时间从不含灰岩时的20 ...
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| 关 键 词： | 改型生物砂滤池 初滤池 灰岩 酸碱度 水力负荷 |
Prevention of Blocking in Modified Biological Sand Filter |
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| NING Yu,LI Yi-lian,LV Feng-lan.Prevention of Blocking in Modified Biological Sand Filter[J].Environmental Science and Technology,2011,34(8):34-37,94. |
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| Authors: | NING Yu LI Yi-lian LV Feng-lan |
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| Institution: | NING Yu,LI Yi-lian,LV Feng-lan(School of Environmental Studies,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | Prevention of blocking in modified biological sand filter,which is pretreated by primary filter and constructed by mixed limestone and river sand was investigated.Experimental results showed that more than 75% of suspended solid were removed by primary filter to prevent from material hardening and blocking caused by non-degradable substance.By enhancing re-aeration and reducing organic pollution load,average pH of the effluent was buffered to 7.58 in the filter containing 50% limestone which can run more th... |
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| Keywords: | modified biological sand filter primary filter limestone pH hydraulic loading rate |
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