We can use sanitary wastewater, such as stored bath water or laundry water and the like to flush the toilet, and if the water is not enough, we can use tap water.
当我们冲洗马桶时，就可以用储存的洗澡水、洗衣水等生活废水冲洗，如果水不够，再用自来水。
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。
The seepage of sanitary sewage and industrial wastewater into the aquifer causes serious groundwater pollution in Shiliquan.
地表生活污水和工业废水向地下渗透，使十里泉的地下水受到严重污染。
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