Landscape Evaluation And Optimization Of Constructed Wetland In Domestic Wastewater Treatment In Shenzhen

With the rapid progress of urbanization,a large number of sewage treatment plants which were originally located in suburban areas are gradually incorporated into the urban interior..The sewage treatment process produces a large amount of waste and irritating gas,which is harmful to the production and life of the surrounding residents.At the same time,the lack of public green space for public activities is a problems worth solving.The traditional treatment process of sewage treatment plant due to restrictions,and closed to the public while it occupied large-scale land.The use of constructed wetland technology can solve the problem with the the transition sewage treatment facilities from environmental pollution type to environmental friendly type.Constructed wetland is a kind of ecological engineering technology for wastewater treatment developed based on natural way that degradation of sewage by natural wetland.Shenzhen has built a number of water purification constructed wetlands,the number of projects in the forefront of the country,which need landscape guidance.In this context,this paper uses AHP analytic hierarchy process to study the landscape evaluation of Constructed Wetland of domestic sewage treatment by taking Shenzhen Julongshan constructed wetland ecological park as an example.Through the analysis of the evaluation results,the current situation and problems,putting forward the corresponding optimization strategy,preliminary explore landscape design method for constructed wetland in domestic wastewater in the area of south of the Five Ridges.This paper introduces the definition of constructed wetland and different types,and then expounds the elements,the constructed wetland purification mechanism and basic layout,defined of the constructed wetland landscape while combined with the situation in Shenzhen.The basic situation of the Julongshan constructed wetland was introduced,which were discussed the necessity and feasibility of evaluation on the landscape for.Based on the literature research,after drawing reference to related research,set the factor of landscape evaluation of constructed wetland in domestic wastewater in Shenzhen.Determine the index set according to the expert questionnaire and on-the-spot investigation,combined with expert questionnaire and on-the-spot investigation,which are 6 first level indexes including water environment,plant configuration,waterfront revetment,path,facilities construction and service facilities,management and operation and 12 level two indexes and 30 level three indexes.Build the system of landscape evaluation of constructed wetland in domestic wastewater in Shenzhen By calculating the weight,and then assigned to each index and then evaluate the Landscape of Julongshan Wetland Ecological Park.Analysis of the evaluation results summarized the characteristics of users and existing landscape problems.Putting forward optimization measures aimed at the problem in 6 aspects of water environment,plant configuration,waterfront revetment,path,facilities construction and service facilities,management and operation.Hopping that through this research on landscape evaluation of constructed wetland in domestic wastewater in Shenzhen and summing up the optimization strategy would provide a reference to the improvement in the construction project,which is of some theoretical value for the formation of landscape design method for constructed wetland in south of the Five Ridges.