污水处理后产生的沉淀物。
半固态的物质，如污水处理后沉淀下来的那种物质。
Semisolid material such as the type precipitated by sewage treatment.
生活污水经调节、沉淀、消毒处理的CL地埋式生活污水处理成套装置处理后达到国家规定的一级排放标准。
Sanitary sewage up to national Grade 1 emission standard after the treatment of regulation, precipitation and sterilization by CL buried sewage treatment plant.
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