水源水库污染底泥不同修复方法脱氮效果对比实验研究.pdfVIP

2012,32(11) 2032~2038 China Environmental Science * ,,, (, 710055) ., , .,. 3 ,., ,83%,92%,73%,. X703 A 2012 Experimental study on nitrogen removal using different bioremediation methods for contaminated sediments of * source water reservoirs. HUANG Ting-lin , YANG Feng-ying, CHAI Pei-pei, SUN Xin (School of Environmental and Municipal Engineering, Xian University of Architecture and Technology, Xian 710055, China). China Environmental Science, 2012,32(11)2032~2038 Abstract Total nitrogen being over standard is the common water quality problem of most source water reservoirs. However, under the conditions of the external source pollution being controlled effectively and the nitrogen load in the upstream water being quite low, the endogenous nitrogen release from sediments,can also deteriorate water quality of overlaying waters. Therefore, proper bioremediation at the sediment-water interface to effectively inhibit the nitrogen release from contaminated sediments is the key to solve the problem of total nitrogen exceeding standard and control the source water quality. Comparing three different bioremediation methods (media covering, adding bacteria agents, adding reductive iron powder), the effects of nitrogen removal at the sedimentwater interface were studied. The results showed that media covering was more effective on nitrogen removal than the other two methods. The average and highest ammonia nitrogen inhibition rates can reach 83% and 92% respectively, and the average total nitrogen inhibition rate can reach 73%. The effect of nitrogen removal was relatively stable. Key words source water reservoir contaminated sediments remediation nitrogen removal media . ,