| 生态沟渠+稳定塘系统处理山区农村生活污水的研究 |
| Treatment of Rural Domestic Sewage in Mountain Areas by a Combined Ecological Trench and Stabilization Pond System |
| 投稿时间：2015-09-07 修订日期：2016-07-18 |
| DOI：10.15928/j.1674-3075.2016.04.007 |
| 中文关键词:生态沟渠 稳定塘 山区农村 生活污水处理 |
| 英文关键词:ecological trench stabilization pond mountainous rural area domestic sewage treatment |
| 基金项目:国家十二五科技支撑项目(2012BAC06B04)；国家十二五水专项子课题（2013ZX07104-004） |
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| 中文摘要: |
| 研究流经生态沟渠+稳定塘系统的生活污水中悬浮物、氨氮、总氮、总磷、CODcr等指标的沿程变化以及去除效率，为探索山区农村生活污水治理模式提供依据和参考。生态沟渠由原农田排水渠经拓宽、种植植被改建而成，总长约150m；稳定塘包括沉淀净化塘、生物净化塘和生物强化净化塘，分别栽种植物、栽种植物+吊养河蚌、栽种植物+放养鲢鳙，总面积约1230m2。在集水池出口、生态沟渠出口、稳定塘各塘出口各设1采样点共5个采样点。试验期间连续进水，进水平均流量约7m3/h，系统总水力停留时间（HRT）约102h，其中生态沟渠段约5.4h、稳定塘段约96.6h，首次采样在连续进水稳定运行1周后进行。在水力停留时间约为4d的条件下，流经该系统的生活污水黑臭消失，浊度下降，出水DO饱和度达到65％以上，进水SS、NH3-N、TN、TP、CODcr的平均去除效率分别达到84.9%、70.1%、49.6%、44.9%和80.5%。生态沟渠段对SS具有较好的去除效果，达到40.1%，占系统总去除量的47%。系统最终出水可达到城镇污水处理厂污染物排放二级标准（GB18918-2002）。生态沟渠+稳定塘系统具有建造灵活、无需动力条件、运行成本低廉等特点，在小流域山区农村具有一定推广和应用前景。 |
| 英文摘要: |
| A system combining an ecological trench with a stabilization pond was used to treat rural domestic sewage. The removal rates of SS, NH3-N, TN, TP, CODcr, were measured to evaluate the removal efficiency of the combined system and provide a reference for domestic sewage treatment in rural mountainous areas. The experiment was carried out in Jinguo Village, Kaixian County of Chongqing City from August, 2014 to May, 2015. The 150m ecological trench was constructed by broadening the drainage ditch and planting vegetation. The stabilization pond system consisted of a settling pond, a biological purification pond and an enhanced biological purification pond with a total area of approximate 1230m2. Five sampling sites were located: at the inlet and outlet of the ecological trench and at the outlet of each pond. During the experiment, continuously flowing water was maintained with an average flow rate of approximate 7m3/h, giving a total hydraulic retention time (HRT) of approximate 102h, including 5.4h in the trench and 96.6h in the ponds. Water samples were collected once a week for determination of DO, SS, NH3-N, CODcr, TN, TP and the first water samples were collected after one week of operation. After about 4 days, the black color and odor from the waste disappeared and turbidity declined. Moreover, the DO saturation of the effluent increased to >65% and the average removal rates of SS, NH3-N, TN, TP and CODcr were 84.9%, 70.1%, 49.6%, 44.9% and 80.5%, respectively. The ecological ditch removed 40.1% of the SS, 47.0% of total SS removal, and created favorable conditions for subsequent stabilization in the ponds. After treatment in the integrated ecological trench and stabilization pond system, the effluent meets the Class II criteria of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB18918-2002). This research demonstrated that an integrated system combining an ecological ditch with stabilization ponds is both sufficient and practical for treating rural domestic sewage in mountainous areas. |
| 郑志伟,胡莲,邹曦,潘晓洁,张志永,万成炎.2016.生态沟渠+稳定塘系统处理山区农村生活污水的研究[J].水生态学杂志,37(4):42-47. |
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