太阳能曝气人工垂直潜流湿地去除生活污水氮磷的试验研究

doi:10.3969/j.issn.1001-5485.2015.06.007

院报 ›› 2015, Vol. 32 ›› Issue (6): 37-41.DOI: 10.3969/j.issn.1001-5485.2015.06.007

太阳能曝气人工垂直潜流湿地去除生活污水氮磷的试验研究

汤显强^1a,1b,2,吴敏^1a,1b

1. a. 流域水环境研究所;b. 流域水资源与生态环境科学湖北省重点实验室,武汉 430010;
2.江西省土壤侵蚀与防治重点实验室,南昌 330029

收稿日期:2014-04-02 出版日期:2015-06-20 发布日期:2015-06-04
作者简介:汤显强(1981-),男,湖北竹溪人,高级工程师,主要研究方向水资源保护与水污染控制,(电话)027-82827263(电子信箱)ckyshj@126.com。
基金资助:
国家自然科学基金项目(51379017和51209011)

Removal of Nitrogen and Phosphorus in Domestic Wastewater by Solar Aerated Vertical Subsurface Flow Constructed Wetlands

TANG Xian-qiang^1,2,3, WU Min^1,2

1.Basin Water Environmental Research Department, Yangtze River Scientific Research Institute, Wuhan 430010, China;
2. Key Lab of Basin Water Resource and Eco-environmental Science in Hubei Province, Yangtze River Scientific Research Institute, Wuhan 430010, China;3.Jiangxi Provincial Key Laboratory of Soil and Water Conservation and Control, Nanchang 330029, China

Received:2014-04-02 Online:2015-06-20 Published:2015-06-04

摘要/Abstract

摘要： 利用芦苇和砾石构建太阳能曝气人工垂直潜流湿地处理生活污水。设定水力负荷400 mm/d,气水比10∶1,当进水氨氮(NH₄-N)、总氮(TN)、溶解性反应磷(SRP)和总磷(TP)平均浓度为5.14,7.56,0.40,0.53 mg/L时,引入太阳能曝气后,各自的平均去除率分别提高24.8%,9.4%,15.7%和11.5%。随着气温下降和进水浓度降低,湿地微生物脱氮除磷能力下降,曝气对改善生活污水氮磷去除作用不显著。对试验系统而言,太阳能曝气湿地基本建设费用是无曝气湿地的2.85倍;但以20 a运行为基础折算出的污水处理费比无曝气湿地仅高0.02元/m³。综上,从污染去除性能和污水长期处理费用来看,太阳能曝气湿地在生活污水处理方面具有较好的技术经济优势。

关键词: 太阳能曝气, 人工湿地, 氮, 磷, 治理成本

Abstract: Reeds (Phragmites) and gravel were used to develop pilot scale solar aerated vertical subsurface flow constructed wetlands to treat domestic wastewater. The hydraulic loading rate was set 400 mm/d and air to water ratio was 10∶1. Experimental results indicated that solar aeration resulted in 24.8%, 9.4%, 15.7% and 11.5% increment in total mean removal respectively for ammonia-nitrogen(NH₄-N), total nitrogen (TN), soluble reactive phosphorus (SRP) and total phosphorus(TP) with corresponding influent concentrations of 5.14 mg/L, 7.56 mg/L, 0.40 mg/L and 0.53 mg/L. Low atmospheric temperature and influent concentration, however, caused a negligible role of solar aeration in nitrogen and phosphorus removal. For the present experiment apparatus, the expenditure of solar aerated wetland is 2.85 times the non-aerated wetlands. Considering a total investment over a period of 20 years, the cost to treat domestic wastewater for solar aerated wetland is only 0.02 RMB/m³ higher than that of non-aerated wetland. In conclusion, solar aerated constructed wetland is a promising solution of treating domestic wastewater with competitive technical and economical advantages.

Key words: solar aeration, constructed wetland, nitrogen, phosphorus, cost of treatment

中图分类号:

TV213
X703.1

汤显强,吴敏. 太阳能曝气人工垂直潜流湿地去除生活污水氮磷的试验研究[J]. 院报, 2015, 32(6): 37-41.

TANG Xian-qiang, WU Min. Removal of Nitrogen and Phosphorus in Domestic Wastewater by Solar Aerated Vertical Subsurface Flow Constructed Wetlands[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2015, 32(6): 37-41.

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太阳能曝气人工垂直潜流湿地去除生活污水氮磷的试验研究

Removal of Nitrogen and Phosphorus in Domestic Wastewater by Solar Aerated Vertical Subsurface Flow Constructed Wetlands

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