The Research On Sewage Treatment Project And The Drainage System Optimization Of Lan Tian

Recently, the economy in Lantian County has been gaining rapid development, but the construction of drainage pipe ditch system and sewage treatment system is relatively lagging behind, most of the urban drainage pipelines are combined municipal wastewater system. The diameter is generally small and in disrepair, leading to poor drainage; there is not perfect drainage system in Industrial Park and the south of the city zone, sewage mostly discharged into the nearest Bahe River tributary; as the upper reaches of Bahe River Basin, the ecological environment of Lantian county has a direct impact on the ecological security of the downstream region and even the Weihe River Basin. In order to solve the above-described problems, we should build and improve the management mechanism, speeding up the rain and sewage diversion of the main roads in the existing urban areas; the collected sewage is transported to the sewage treatment plant; the rain discharged into the nearest Bahe River and nearby tributaries.According to the specific problems in the area, this article investigated the relevant data and analysed the current status and problems of drainage pipe system and sewage treatment system in Lantian County, inquiring into optimization scheme of drainage pipe drainage system and sewage treatment technology. Combined with the optimization scheme, the optimization design of the drainage pipe system and sewage treatment technology in the county was carried out.The main contents of this paper:1. Based on the comprehensive investigation and a lot of documents, knowing the physical situation and water quality actuality of Lantian county. Combined with her master plans, we analysed the current situation of the drainage system and sewage treatment system and indicated the existent problems.2. The optimization scheme for the construction of drainage pipe system in Lantian County was confirmed. The drainage system is the rain sewage diversion system, the drainage system includes the sewage pipe system and the storm sewer system. For the optimization design of the two systems, it is mainly from the choice of design parameters and the plane layout of the pipe network. Via comparison, the optimization technology of drainage pipe system is put forward. In addition, aiming at the optimization of the rain water system, the utilization of rainwater resources is put forward in particular.3. According to the field investigation data, combined with the requirements of comprehensive management of water environment in Bahe River Basin, the amount of sewage was scientifically predicted, which determined the reasonable size of the sewage treatment and the influent and effluent quality of the plant. The process planning of wastewater treatment in Lantian county is determined by the comparison of the schemes.4. The optimization scheme of drainage pipe system and sewage treatment technology is applied to Lantian County, which designed sewer system and sewage treatment system in Lantian County with special drainage planning and field research data.