现有的公共污水管网沿着地块的南面，这部分系统是压力系统。
The existing public network for waste water drainage is along south side of the plot and the system is pressurized.
该污水直接排入化工生产污水管网，给公司污水处理单元带来较大的生产压力。
The disposal unit would bear great pressure if the sewage is directly discharged into waste pipe network without any pre-treatment.
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