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Highway-service-station Wastewater MBR Project


Highway-service-station Wastewater is one of the domestic wastewater which is difficult to treat. Up to now, there is no unified standard specification for the design of sewage treatment projects in service areas, and there are differences in sewage treatment and discharge requirements in different provinces. The fluctuation range of wastewater quality in the service area is large, and the conventional sewage treatment equipment is difficult to achieve the standard and stable discharge. Various factors hinder the construction and operation of sewage treatment projects.

Membrane Solution as a professional dispersed sewage treatment equipment service providers has obtained a large number of real data through visits and surveys, and mastered the basic special points of sewage in the service area. We has achieved remarkable results in the treatment of such domestic sewage through continuous optimization and improvement of its sewage treatment equipment process parameters. Today, we will share with you the sewage treatment equipment and project overview of some highway-service-station in Chongqing province.

Highway-service-station Sewage Parameter

The main sources of sewage in the highway-service-station include public toilet sewage, catering waste water and greening flushing water, among which flushing waste water and catering waste water account for more than 60% of the total sewage. Most of the service areas have small sewage production, producing 30-150 m³/d waste water. The discharge of sewage during holidays is 1.5-2.5 times than usual. Through testing the water quality of dozens of sewage treatment projects in service-station, Membrane Solutions found that the total nitrogen and phosphorus content of domestic waste water in highway-service-station is about 2.2 times higher than that of conventional urban sewage,  COD and BOD exceed the standard about 1.2 times.

Original Sewage Treatment Equipment Problems

The highway-service-station in the province that adopt the decentralized treatment mode mostly choose fiberglass or carbon steel buried integrated sewage treatment equipment, the core process is biological treatment method, the whole set of equipment generally includes tank, electric control cabinet, blower, lift pump, etc. The quality of selected products in some facilities is worrying. Some carbon steel equipment rust aging serious, some FRP equipment exists water seepage phenomenon, equipment failure more, replacement and maintenance frequent. Packing shedding and aeration head damage are common. This is directly related to the lack of quality standards in the sewage treatment equipment industry and the procurement of cheap equipment by project builders. 

Treatment Suggestions

  • Accurate assessment of the sewage service area treatment capacity is an effective premise for project construction. In the planning stage of facilities, it is necessary to reasonably estimate the daily sewage volume of the station area, and take measures to cope with the surge of sewage during holidays, such as adding water quality and quantity regulation ponds and other means to control the inflow. 
  • The sewage treatment equipment in the service area should not directly choose traditional rural and conventional decentralized sewage treatment products, and the equipment should have good resistance to water quality fluctuation and impact resistance.  In order to ensure the stability of the project to reach the standard, the equipment must strengthen the ability of nitrogen and phosphorus removal, generally can use electric phosphorus removal or pharmaceutical phosphorus removal. 
  • The sewage facilities in the service area need to strengthen operation and maintenance management, and the pretreatment of grille, oil trap and septic tank should be cleaned regularly to avoid pipeline blockage.

The above is some overview of highway-service-station, if you have service area sewage equipment and program needs welcome to inquire! 

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