The Water Quality Improvement And Operation Mode Optimization For Cityscape Water

With the development of the social economy, the quality and the style of people’slife are also rising, the urban landscape water is more and more present in ourlives.Water environmental problems caused by poor water quality of the landscape arealso constantly increasing. Therefore, the study of landscape water quality restorationtechniques and optimization measures of run mode is particularly important. In thispaper, the water of Qujiang Lake was used as an example to do the following research:Combing with current water quality of Qujiang Lake, testing water quality, and thenevaluating the water bodies, and establishing the water quality prediction model, andfinally giving a number of measures to optimize water run mode.The main work and conclusions of this article are as follows:(1)Take and sort out the data of Qujiang Lake and monitor the water quantity,Establish water balance equation to analysis water volume.The results show that: Alarge amount of water leakage of Qujiang Lake, not only cause economic losses, butalso pose a hazard to nearby buildings.Then analysis the reason,finally, put forwardsome feasible methods to repair water leakage.(2) Sample from the designated points to monitor water quality of QujiangLake.Monitor project includes TP, TN, NH3-N, CODMnand DO, ect. Use fuzzycomprehensive evaluation method to evaluate the monitoring results and makecomparison with the single factor evaluation method, The results show that: fuzzycomprehensive evaluation of water quality monitoring results is more reliable.Part ofwater quality of QuJiang Lake is Ⅲ class,and others is Ⅳ class. The state of the wholewater body is eutrophication, and TN has the largest impact on water quality. (3)Basing on the analysis and evaluation of water quantity and quantity, we use themore commonly used WASP quality prediction model software to simulate the Qujianglake water. The simulation results show that: the simulated and measured values trendshave a high degree of consistent trends. So, the water quality simulation results can beused to predict future changes in water quality and forecast the filling and changingwater quantity for cityscape water. But the measured and simulated values have acertain deviation, the subsequent simulation work also needs to be improved a lot.(4) According to the actuality of the Qujiang Lake, we analyze the monitoringresults of its water quality and quantity, and also the results of water balance analysis,water quality assessment and water quality modeling. Survey the present operatingmodes of Qujiang Lake, propose specific optimization measures for the urban landscapewater running mode to guarantee water balance, improve water quality restoration,optimize the management mode.All those not only can that provide a reference for thepresent operating modes optimization of Qujiang Lake, but also provide the basis foroperation and long-term planning to run of other landscape water.