自充氧生物滤床技术在农村生活污水处理中的应用研究

Application Research of Self-aerated Biological Filter Bed Technology in Rural Domestic Sewage Treatment

农村生活污水具有排放分散、水量变化大、可生化性能好等特点,针对上述特点,引入厌氧+自充氧生物滤床污水处理技术,该技术利用无动力自充氧系统来实现污水溶解氧的提升,是一项生态的、高效的污水处理新技术,尤其适用于农村生活污水处理。对厌氧+自充氧生物滤床技术与厌氧+人工湿地技术在工艺流程、工艺特点、处理效果、运维成本进行对比分析,发现自充氧生物滤床技术进一步优化了传统处理工艺,有效缓解人工湿地技术运行不稳定、受季节影响大、维护管理难等问题,且处理效果更好,出水水质达到GB 18918—2002《城镇污水处理厂污染物排放标准》一级A标准,真正意义上做到高效、低碳、生态。

rural domestic sewage has the characteristics of dispersed emission,large variation of water volume and good biodegradability.In response to the above characteristics,the anaerobic-self-aerated biological filter bed sewage treatment technology is introduced.This technology uses the non-powered self-aeration system to increase dissolved oxygen in sewage,which is ecological and efficient for sewage treatment,especially suitablefor rural domestic sewage treatment.By comparing and analyzing the process flow,process characteristics,treatment efficiency,operation cost of anaerobic-self-aerated biological filter bed technology and traditional anaerobic-artificial wetland unpowered technology,it is found that the selfaerated biological filter bed technologyfurther optimizes the traditional sewage treatment process and alleviates the operation instability,seasonal influence,management difficulties and other issuesof the current artificial-wetland technologyeffectively.Besides,the treatment effect is better to meet the first A standard of"Discharge standard of pollutants for municipal wastewater treatmentplant"(GB 18918-2002),which is highlyeffective,low-carboned and ecological.