人工湿地在新农村生活污水处理中的应用

针对新农村生活污水水量变化大、浓度低等特点,本文提出以厌氧发酵作为预处理的水平潜流式人工湿地处理新农村污水,该工艺具有投资少、运行费用低、处理效果好、运行稳定、操作简单等特点。人工湿地利用厌氧发酵降低有机负荷,采用单一基质避免出现短流或堵塞,投配与落干时间比为6∶1,最终使出水水质达到城镇污水处理厂污染物排放标准一级B标准。

The Application of Constructed Wetland in Wastewater Treatment of New Countryside

In view of characters of wastewater in the new countryside such as large variety in quantity and low concentration,the horizontal subsurface flow constructed wetland which taking anaerobic fermentation as pretreatment method is proposed and this pretreatment process has a characteristic of low investment and run charge,steady work condition,simple operation and so on.In constructed wetland,the anaerobic fermentation process is used to reduce the organic loading,single matrix to prevent short-circuit or block and dosing and dry-off time ratio 6:1 to ensure the treatment effects.After this process,the effluent quality would reach standard B at the first-level of the discharge standard of pollutants for municipal wastewater treatment plant.