When biological filter tank is used to treat sanitary wastewater, COD in effluent can satisfy Class I of the discharge standard for urban wastewater treatment plant.
实验针对间歇投配污水的生物渗滤池处理生活废水的一些基本运行参数进行了优化研究。
2
This invention relates to structural changing of the waste water drain trap in housing construction and the double valve water tank of the waste water filter and sanitary ware urinal.