监督和检查公司污染负荷的排放情况，维护排水管网系统。
Supervise and monitor the discharging status of pollutant load. Maintain the waste water discharging pipeline system.
前者是根据天然小流域导出的，对城区因下垫面的变化及排水管网系统的差异，采用该方法显然不十分合适；
The former was deduced by the natural small basin, but it is not being considered the underlying surface change and different drainage tube net system.
结合编制某市市区污水管网系统专业规划，分析和研究了东南沿海地区类似老城区排水管网系统规划与设计需要注意的几个问题。
In compiling a sewer system program in downtown area, the problems deal with the planning and design of sewer network in old township districts in south east seashore area were discussed.
认为在三峡库区区县完善排水管网系统和建设城市污水处理厂迫在眉睫，氧化沟工艺不失为三峡库区区县污水处理工程的首选工艺。
It is urgent to perfect sewage pipeline system and to build municipal wastewater treatment plants. Oxidation ditch process is the first choice of possible ways.
采用一维非恒定流方程模拟地下排水管网内的水流，并给出泵站、闸门、淹没出流管道等排水系统的处理方法。
The flow in the drainage pipe network is simulated by one-dimensional unsteady flow theory, and the calculation of the pumping stations, the water gates and submersed pipes is indicated.
阐述了南京主城排水管网达标规划系统建立的必要性，现阶段该系统以雨水管网为主，介绍了系统建立的原则、开发的技术路线及核算标准等。
The necessity for establishment of planning system for wastewater discharge network achieving the standard in the main urban area of Nanjing was described.
阐述了南京主城排水管网达标规划系统建立的必要性，现阶段该系统以雨水管网为主，介绍了系统建立的原则、开发的技术路线及核算标准等。
The necessity for establishment of planning system for wastewater discharge network achieving the standard in the main urban area of Nanjing was described.
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