使用过的生活污水中含有可溶性有机物质、悬浮物、无机物等，需经污水处理达标后才能排放。
The used wastewater contains soluble organic matters, suspended solids, inorganic substances, etc. , that it can only be discharged after being treated and meeting the drainage requirements.
使用过的生活污水中含有可溶性有机物质、悬浮物、无机物等，需经污水处理达标后才能排放。
The used wastewater contains soluble organic matters, suspended solids, inorganic substances, etc. , that it can only be discharged after being treated and meeting the drainage requirements.
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