Improving multi-soil-layer (MSL) system remediation of dairy effluent
Improving multi-soil-layer (MSL) system remediation of dairy effluent
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DOI：
10.1016/j.ecoleng.2007.08.006
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发表时间：
2008-01-03
影响因子：
3.8
通讯作者：
Attanandana, T.
中科院分区：
文献类型：
--
作者：
Pattnaik, R.;Yost, R. S.;Attanandana, T.
乳品废水处理是夏威夷群岛的一个严重问题。奶牛场经常建立多个沉淀池来积累和储存污水。有时，泻湖的溢流导致营养物，如氮（N）和磷（P）和其他污染物转移到水文相关的地表，地下和沿海沃茨。本研究旨在探讨多层土壤系统对乳品废水中无机氮和磷酸盐的去除效果。以珍珠岩和雷乐华土为处理，构建了4个MSL系统。这两种材料分别用于在MSL系统中形成好氧层，而厌氧层由木炭、锯末、铁屑和Honouliuli土壤的混合物形成。结果表明，雷乐华和珍珠岩MSL系统对无机氮的去除率相近，分别为22-93%和21- 96%。Leilehua MSL系统中的磷酸盐去除率（64-99%）高于Perlite MSL系统（9-97%）。外加曝气提高了雷乐华MSL系统对磷酸盐的去除率。蔗糖的应用与恒定的通气速率增加了无机氮的去除都在Leilehua和珍珠岩MSL系统和增加磷酸盐的去除珍珠岩MSL系统。该研究表明，MSL系统具有去除乳品废水中高百分比无机氮和磷酸盐的潜力，从而实现水的再利用。(C)2007 Elsevier B. V.保留所有权利。
Dairy effluent disposal is a serious problem in the Hawaiian Islands. Dairies often establish multiple settling lagoons to accumulate and store effluent. Occasionally, the overflow of lagoons leads to the transfer of nutrients, such as nitrogen (N) and phosphorus (P), and other contaminants, to hydrologically associated surface, subsurface, and coastal waters. This study was conducted to assess the removal of inorganic N and phosphate in dairy effluent using multi-soil-layer (MSL) systems. Four MSL systems were constructed with two replications of two treatments, which were Perlite and the Leilehua soil. Both materials were used separately for forming an aerobic layer in the MSL systems, whereas an anaerobic layer was formed from a mixture of charcoal, sawdust, iron filings and Honouliuli soil. The results of this study revealed that the removal of inorganic N was similar for the Leilehua and Perlite MSL system, which was 22-93% and 21-96%, respectively. Phosphate removal was higher in the Leilehua MSL system (64-99%) compared to the Perlite MSL system (9-97%). Additional aeration increased the removal of phosphate by the Leilehua MSL system. Sucrose application with a constant rate of aeration increased the removal of inorganic N both in the Leilehua and Perlite MSL systems and increased phosphate removal in the Perlite MSL system. The study demonstrated that MSL systems have the potential to remove high percentages of inorganic N and phosphate in dairy effluent enabling reuse of the water. (C) 2007 Elsevier B.V. All rights reserved.