No drainage entity may drain sewage into the urban drainage pipe network and its accessory facilities if it fails to obtain an urban drainage license.
未取得城市排水许可证书，排水户不得向城市排水管网及其附属设施排放污水。
Article 3 to drain sewage into the urban drainage pipe network and its accessory facilities, a drainage entity shall apply for an urban drainage license in accordance with these Measures.
第三条排水户向城市排水管网及其附属设施排放污水，应当按照本办法的规定，申请领取城市排水许可证书。
For extra reassurance, the gutters catch excess water and drain it away through the sewage system.
另外还保证排水槽可以保存过量的水并且通过排水系统排出。
Spring-actuated valve to be used on pump discharge. Swing check with outside lever and spring to be used on sump, sewage and storm drain lines.
弹簧执行机构止回阀用于管道排放。外置操作手柄和弹簧执行机构的旋启式止回阀用于污水坑、排污和雨水排泄管道。
This paper describes the site metering and analysis of water quality in the sewage drain reach of Sibao sewage treatment plant, Hangzhou.
本文叙述杭州市四堡污水处理厂污水排放江段现场水质检测和分析。
Although the pharmacy sewage treated by the secondary biochemical method can reach the standard of drain, it may still cause water body pollution.
制药污水经过生化处理后虽能达标排放，但仍对水体造成污染。
Although the oil refining sewage treated by the secondary biochemical method can reach the standard of drain, it may still cause water body pollution.
炼油污水经生化处理后虽能达标排放，但仍对水体造成污染。
The Zn, Cd sewage, harmful to human body, is treated by compound sedimentation to conform to the drain standards.
锌镉度水对人体有害。综合沉淀法处理锌镉废水符合排放标准。
Installed outside all kinds of sewage pools' body to drain sludge and other filth from pool bottom.
安装在各类污水池体外，用于排除池底泥沙及污物。
Installed outside all kinds of sewage pools' body to drain sludge and other filth from pool bottom.
安装在各类污水池体外，用于排除池底泥沙及污物。
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