WANG Bo,YANG Shu-chuan.Engineering Practice of Ecological Treatment System for Rural Sewage Treatment[J].China Water & Wastewater,2021,37(14 14):128-131.
Engineering Practice of Ecological Treatment System for Rural Sewage Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
14 14
Page:
128-131
Column:
Date of publication:
2021-07-17
- Keywords:
- rural sewage; ecological treatment system; total phosphorus
- Abstract:
- In view of the increasingly stringent requirement of sewage treatment and urgent need of its technology in villages and towns, this paper introduces the process and technology of ecological treatment system applied in Yuntai Middle School of Lianyungang and studies its operation and treatment effect. Engineering practice shows that the system can effectively reduce the pollutant concentrations of COD, ammonia nitrogen and total phosphorus in sewage with their removal rates of over 85%, 90% and 80% respectively. The effluent COD and ammonia nitrogen can meet the level Ⅳ criteria of Environmental Quality Standards for Surface Water (GB 3838-2002), meanwhile the effluent TP also can meet the first level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). About 15 000 m3/a of sewage discharge and 13.5 t/a of carbon emission are reduced per year in this project. The electricity cost is 0.525 yuan/m3.
Last Update:
2021-07-19