| Constructed wetland treatment of source separated washing wastewater in rural areas of southern China | |
Li, Yahui; Zhu, Shikun; Zhang, Yu ; Lv, Minghuan; Kinhoun, Jean Joel Roland; Qian, Tingting; Fan, Bin
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| 2021-10-01 | |
| Source Publication | SEPARATION AND PURIFICATION TECHNOLOGY
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| ISSN | 1383-5866 |
| Volume | 272Pages:- |
| Abstract | China's toilet modernization has enabled thousands of villages to separate their feces and urines from the greywater or washing wastewater. Human feces and urine are usually used as raw materials for fertilizers, but the lack of understanding of discharge characteristics of washing wastewater in China rural areas affects the development of treatment technology and the reuse of treated water. In this study, a village in the lower reaches of the Yangtze River was selected to investigate the discharge characteristics of washing wastewater, and four kinds of subsurface constructed wetlands were used for treatment and reuse. The results showed that the production of washing wastewater in rural aeras was 59-232 L/(cap .d), with an average of 121 L/(cap .d). The bathing wastewater contributed the highest proportion of 46.19%. COD was identified as the key pollutants with average concentration of 337 mg/L. Compared with domestic wastewater, the concentrations of TN and TP were much lower with the average of 11.1 mg/L and 0.6 mg/L respectively. After treated by the constructed wetland with ceramsite, volcanic rock and anthracite as composite substrate, the effluent water met the requirements of paddy field crop irrigation, and the removal rates of COD, TN and TP achieved 61.5%, 68.8% and 70.5% respectively. Wetland plants and modular design had significant positive effects on the removal of nitrogen and phosphorous, but little effect on COD removal. The fecal coliforms in the effluent were all lower than 4.0 lg (MPN/L) in the four constructed wetlands, indicating they were not the limiting factors for irrigation reuse. |
| Department | 水污染控制实验室 |
| Keyword | Washing wastewater Discharge characteristics Constructed wetland Rural area |
| WOS Research Area | Engineering, Chemical |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/46030 |
| Collection | 水污染控制实验室 |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Yahui,Zhu, Shikun,Zhang, Yu,et al. Constructed wetland treatment of source separated washing wastewater in rural areas of southern China[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,272:-. |
| APA | Li, Yahui.,Zhu, Shikun.,Zhang, Yu.,Lv, Minghuan.,Kinhoun, Jean Joel Roland.,...&Fan, Bin.(2021).Constructed wetland treatment of source separated washing wastewater in rural areas of southern China.SEPARATION AND PURIFICATION TECHNOLOGY,272,-. |
| MLA | Li, Yahui,et al."Constructed wetland treatment of source separated washing wastewater in rural areas of southern China".SEPARATION AND PURIFICATION TECHNOLOGY 272(2021):-. |
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| Constructed wetland （2467KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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