黑臭河道底泥特征分析及处理工艺筛选
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摘要
以深圳市前海片区代表性河道黑臭底泥为研究对象,对其p H值、含水率、有机质、氮磷含量、重金属含量及粒径进行分析。结果表明,黑臭底泥主要为呈碱性的无机砂质成分,有机质含量低,重金属含量虽高但分布稳定。根据其特性,最终确定其主要处置方式为疏浚后机械脱水。
In this paper,taking the representative sediments from black-odor river in Qianhai district of Shenzhen as the research objects,pH value,moisture content,organic matter content,mass fraction of nitrogen and phosphorus,concentrations of heavy metals and particle size distribution of the sediments were determined.The results indicated that the black odor sediments were mainly composed of alkaline inorganic sand containing a few amount of organic matters and lots of heavy metals which were in stable distribution. According to the properties of the sediment,the final treatment way was mechanical dewatering after dredging.
In this paper,taking the representative sediments from black-odor river in Qianhai district of Shenzhen as the research objects,pH value,moisture content,organic matter content,mass fraction of nitrogen and phosphorus,concentrations of heavy metals and particle size distribution of the sediments were determined.The results indicated that the black odor sediments were mainly composed of alkaline inorganic sand containing a few amount of organic matters and lots of heavy metals which were in stable distribution. According to the properties of the sediment,the final treatment way was mechanical dewatering after dredging.
引文
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[2]赵越,姚瑞华,徐敏,等.我国城市黑臭水体治理实践及思路探讨[J].环境保护,2015,43(13):27-29.
[3]刘建福,陈敬雄,辜时有.城市黑臭水体空气微生物污染及健康风险[J].环境科学,2016,37(4):1264-1271.
[4] VOLLAND S,KAZMINA O,VERESHCHAGIN V,et al. Recycling of sand sludge as a resource for lightweight aggregates[J].Construction and Building Materials,2014,52:361-365
[5]周灵辉.外秦淮河底泥释放对上覆水水质的影响[J].环境监测管理与技术,2003,15(5):41-42.
[6] MATTEI P,ROBERTA P,GABRIELE R,et al. Evaluation of dredged sediment co-composted with green waste as plant growing media assessed by eco-toxicological tests,plant growth and microbial community structure[J]. Journal of Hazardous Materials,2017,333:144-153.
[7]吴航,王泽良,黄剑,等.深圳市政污水排海工程排污混合区范围的确定[J].环境监测管理与技术,2002,14(6):37-40.
[8]李慧,孙伟香.城市污泥有机质测定方法研究[J].环境与可持续发展,2016,41(5):222-224.
[9]陈大勇,王里奥,罗书鸾,等.城市污泥总氮、总磷消解测定方法[J].重庆大学学报,2010,33(3):99-102,123.
[10]姚金玲,王海燕,于云江,等.城市污水处理厂污泥重金属污染状况及特征[J].环境科学研究,2010,23(6):696-702.
[11]肖本益,刘俊新. pH值对碱处理污泥厌氧发酵产氢的影响[J].科学通报,2005,50(24):2734-2738.
[12] MAHFOUD B,MOUHAMADOU A,NOR-EDINE A. New experimental approach of the reuse of dredged sediments in a cement matrix by physical and heat treatment[J]. Construction and Building Materials,2017,140:432-444.
[13]华玉妹,陈英旭,田光明,等.初始p H值对污泥中重金属生物沥滤的影响[J].农业环境科学学报,2006,25(1):128-131.
[14]吕佳佳.黑臭水形成的水质和环境条件研究[D].武汉:华中科技大学,2011.
[15]张春雷,管非凡,李磊,等.中国疏浚淤泥的处理处置及资源化利用进展[J].环境工程,2014,32(12):95-99.
[16]姜霞,王书航,张晴波,等.污染底泥环保疏浚工程的理念·应用条件·关键问题[J].环境科学研究,2017,30(10):1497-1504.
[17]刘学武.城市河道黑臭水体暨污染底泥治理技术及标准探讨[J].中国标准化,2017(24):43-45.