但是新的难题又浮现了：海岸地区的居民并没有污水系统，他们的排泄物必须排入化粪池。
A new dilemma is emerging, however, in coastal areas where residents do not have sewage hookups and must put their wastes in septic tanks instead.
本系统为设计人员提供了给水、排水、消防、热水等系统的水力计算，并能进行水箱、化粪池、消火栓的选型。
The system supplied the calculating program of water supply, drainage, fire fighting, hot water system, and can choose the type of water tank, septic tank and hydrant.
粪污处理系统由固液分离机、化粪池和沥滤场组成。
The waste management system is comprised of a solid waste separator, septic tank and drain field.
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