净化槽在农村生活污水治理中的应用

Application of household equipment in treatment of rural domestic wastewater

针对农村生活污水水量少、分布不均等特征,净化槽处理技术更适合在农村推广使用。通过对常熟市梅李镇454台已投用设备的统计基础上,分析了其出水水质和养护维修年度费用。结果表明:相同季度比较,SS的合格率最高,氨氮和总氮的合格率相对较低;不同季节相比较,7~9月份的处理效果最好。初投资阶段,处理量越大的设备户均建设费用最高,而年运行费用却最低。

Household treatment technology is more suitable for rural domestic wastewater which is litter,scattered distribution.Based on the four hundred and fifty-four facilities which have been used in Changshu Meili Town,the article analysis the water quality discharged and annual cost of maintenance and repair.The results showed that the qualified rate of SS was the highest,while the qualified rate of ammonia nitrogen and total nitrogen was relatively low in the same season,and compared with different seasons,the treatment effect from July to September is the highest.Initial investment stage,the construction cost per household of the equipment with larger treatment capacity is the highest,while the annual operating cost is the lowest.