铝污泥复合填料特性及在人工湿地中的应用

奚道国; 张瑞斌; 周乃; 陈凡; 祖白玉; 王乐阳

doi:10.12153/j.issn.1674-991X.2019.05.070

铝污泥复合填料特性及在人工湿地中的应用

doi: 10.12153/j.issn.1674-991X.2019.05.070

奚道国^1,2,3,
张瑞斌^1,2,3,
周乃^1,2,
陈凡^1,2,
祖白玉^1,2,
王乐阳^1,2,3

1.
江苏龙腾工程设计股份有限公司,江苏南京 210014
2.
南京市生态河道工程技术研究中心,江苏南京 210014
3.
南京市雨污水资源化利用工程技术研究中心,江苏南京 210014

详细信息

作者简介:
奚道国(1992—),男,硕士,主要从事水体污染治理及人工湿地研究, 15852938411@163.com

中图分类号: X524
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- 文章访问数: 628
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- 被引次数: 0
出版历程
- 收稿日期: 2018-12-06
- 刊出日期: 2019-09-20

Characteristics of aluminum sludge composite filler and its application in constructed wetlands

XI Daoguo^1,2,3,
ZHANG Ruibin^1,2,3,
ZHOU Nai^1,2,
CHEN Fan^1,2,
ZU Baiyu^1,2,
WANG Leyang^1,2,3

1.
Jiangsu Long-leaping Engineering Design Co. Ltd., Nanjing 210014, China
2.
Nanjing Ecological River Engineering Technology Research Center, Nanjing 210014, China
3.
Nanjing Rain-water Recycling Engineering Technology Research Center, Nanjing 210014, China

摘要

摘要: 利用铝污泥、钢渣和沸石制备了3种铝污泥复合填料——铝污泥-沸石、铝污泥-钢渣、铝污泥-沸石-钢渣,研究了其物理特性和对磷的等温吸附性能,并应用于人工湿地小试系统中,探讨其对湿地水质的净化效果。结果表明:相较铝污泥和传统湿地填料,3种复合填料具有较大的体积密度、孔隙率和比表面积;3种复合填料对磷的吸附效果存在较大差异,表现为铝污泥-钢渣>铝污泥-沸石>铝污泥-沸石-钢渣;3种复合填料对人工湿地进水中化学需氧量(COD_Cr)的去除率无显著差异,均为70%左右;对总磷(TP)、总氮(TN)、氨氮(NH₃-N)的去除率差异较大,其中铝污泥-钢渣、铝污泥-沸石对TP去除率较高(93%以上),铝污泥-沸石、铝污泥-沸石-钢渣对TN和NH₃-N去除率较高(TN高于65%,NH₃-N高于77%);铝污泥-沸石复合填料对人工湿地污染物去除的综合效果最好,可使人工湿地出水水质达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准。
- 铝污泥 /
- 复合填料 /
- 人工湿地 /
- 高效除磷 /
- 农村生活污水
Abstract: Three kinds of aluminum sludge composite fillers, including aluminum sludge-zeolite, aluminum sludge-steel slag, aluminum sludge-zeolite-steel slag, were prepared by using aluminum sludge, steel slag and zeolite. The physical properties and isothermal adsorption properties of phosphorus were studied. The composite fillers were used in a pilot-scale constructed wetland system, and their purification effects on wetland water quality were discussed. The results showed that the three kinds of composite fillers had higher volume density, porosity and specific surface area compared with aluminum sludge and conventional wetland fillers. The adsorption effect on phosphorus was quite different, with the order as follows: aluminum sludge-steel slag>aluminum sludge-zeolite> aluminum sludge-zeolite-steel slag. The removal rate of COD_Cr was about 70% in constructed wetland which revealed no significant differences. The removal rate of TP, TN and NH₃-N were significantly different; the removal rate of aluminum sludge-steel slag and aluminum sludge-zeolite on TP was higher (above 93%), while that of aluminum sludge-zeolite, aluminum sludge-zeolite-steel slag on TN and NH₃-N was higher (TN above 65% and NH₃-N 77%). The aluminum sludge-zeolite composite filler had the best comprehensive removal effect on pollutants in constructed wetlands, and the effluent quality of constructed wetlands could reach level A of Pollutant Discharge Standard for Urban Sewage Treatment Plants (GB 18918-2002).
- aluminum sludge /
- composite filler /
- constructed wetland /
- effective phosphorus removal /
- rural domestic sewage

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