System Design for Collection and Disposal of Accidental Wastewater in a Natural Gas Purification Plant
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Abstract:
The accidental wastewater collection and disposal scheme of a natural gas purification plant in Chongqing was introduced, according to the severe pollution of water environment caused by the petrochemical industry accidents which happen frequently in recent years and the documentation requirements of an emergency notice about urging the petrochemical enterprise to carry out several security and environmental protection key works which was issued by the State Production Safety Supervision Administration and the State Environmental Protection Administration in 2006. First, the type and quantity of accidental wastewater were determined, and the accidental wastewater of 1114 m3 was collected using the big cofferdam based on the conditions of existing drainage system, manufacturing technique, and layout of the factory. Secondly, the accidental wastewater was sent to the accidental pool for storage through the existing and proposed drainage systems. Finally, the accidental wastewater was treated by the wastewater treatment unit in the factory through lifting of submersible sewage pump, which can reduce the impacts of accidental wastewater on water environment.