Efficiency of a multi-soil-layering system on wastewater treatment using environment-friendly filter materials.
Efficiency of a multi-soil-layering system on wastewater treatment using environment-friendly filter materials.
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DOI：
10.3390/ijerph120303362
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发表时间：
2015-03-23
影响因子：
--
通讯作者：
Wang PH
中科院分区：
文献类型：
--
作者：
Ho CC;Wang PH
多层土壤（MSL）系统主要包括两部分，即土壤混合层（SML）和渗透层（PL）。在日本，沸石通常用作透水层材料。在本研究中，沸石被相对便宜和更环保的材料取代，如膨胀粘土集料、牡蛎壳和从净水厂收集的已使用过的颗粒活性炭。一系列室内试验表明，颗粒活性炭对悬浮固体（SS）的去除率在76.2% ~ 94.6%之间；沸石和膨胀粘土团聚体的效率相似，在53.7% ~ 87.4%之间，牡蛎壳的效率最低，在29.8% ~ 61.8%之间。进一步的结果表明，牡蛎壳系统需要比沸石系统增加2 ~ 4倍的废水停留时间才能保持相似的化学需氧量（COD）去除效率。在4种MSL样品中，沸石体系和颗粒活性炭体系的NH3-N去除率稳定在92.3% ~ 99.8%。膨胀粘土骨料体系由于吸附能力低，孔隙过大，在高水力加载速率条件下会导致NO3−-N的浸出，去除效果较差。MSL体系的总磷（TP）去除效率与渗透层材料没有直接关系。因此，所有MSL样品的TP效率在92.1%到99.2%之间。
The multi-soil-layering (MSL) system primarily comprises two parts, specifically, the soil mixture layer (SML) and the permeable layer (PL). In Japan, zeolite is typically used as the permeable layer material. In the present study, zeolite was substituted with comparatively cheaper and more environmentally friendly materials, such as expanded clay aggregates, oyster shells, and already-used granular activated carbon collected from water purification plants. A series of indoor tests indicated that the suspended solid (SS) removal efficiency of granular activated carbon was between 76.2% and 94.6%; zeolite and expanded clay aggregates achieved similar efficiencies that were between 53.7% and 87.4%, and oyster shells presented the lowest efficiency that was between 29.8% and 61.8%. Further results show that the oyster shell system required an increase of wastewater retention time by 2 to 4 times that of the zeolite system to maintain similar chemical oxygen demand (COD) removal efficiency. Among the four MSL samples, the zeolite system and granular activated carbon system demonstrated a stable NH3-N removal performance at 92.3%–99.8%. The expanded clay aggregate system present lower removal performance because of its low adsorption capacity and excessively large pores, causing NO3−-N to be leached away under high hydraulic loading rate conditions. The total phosphorous (TP) removal efficiency of the MSL systems demonstrated no direct correlation with the permeable layer material. Therefore, all MSL samples achieved a TP efficiency of between 92.1% and 99.2%.
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影响因子：
3.8
作者：
Pattnaik, R.;Yost, R. S.;Attanandana, T.
通讯作者：
Attanandana, T.
影响因子：
3.4
作者：
RINZEMA, A;VANLIER, J;LETTINGA, G
通讯作者：
LETTINGA, G
影响因子：
2
作者：
Boonsook, P;Luanmanee, S;Wakatsuki, T
通讯作者：
Wakatsuki, T
影响因子：
2.7
作者：
Cintoli, R;DiSabatino, B;Bruno, G
通讯作者：
Bruno, G
影响因子：
2.7
作者：
Kao, CM;Wang, JY;Wen, CK
通讯作者：
Wen, CK