A Study On Simulation Of Water Environment Of Wenruitang River In Wenzhou Urban District During Ecological Water Diversion Period

The Wenruitang Riverisan is an inland rivernctwork reservoir controlled by sluice-system along the Oujiangriver. With the developing of economy, industrial, domestic and agricultural wastewater were poured into the river through various channels. Water quality of Wenruitang was deteriorated sharply. Sediment was contaminated. Function of the river as water resources was lost. Ecological landscape features were greatly weakened. After accommodating a large number of contaminants, Wenruitang Wenzhou segments had a long period of poor water quality at class V standard, seasonal or perennial water bodies paddlewheel phenomenon. Ecological water diversion is verified as an effective and important method of improving the water of Wenruitang River. As the urban segments of Wenzhou Wenruitang crisscross and numerous beheaded rivers, ecological water diversion can not fully eliminate the phenomenon of urban black smelly river. Siltation phenomenon and grayed water also appeared in the river. Ecological Floating Bed is one of the effective ways to remove silt in water. Hydrodynamic and water quality model can simulate the response of the ecological water diversion and sluices-scheduling.In order to improve the efficiency of water diversion, this paper set Wenzhou urban sections of Wenruitang as the study area, emplaced29water quality monitoring points and four hydrological monitoring points. On the basis of the measured data we analyzed temporal and spatial variation of water quality of urban Wenzhou sections of Wenruitang River during winter and summer water diversion. On this basis, we use the HD module and the AD module of MIKE11software to establish a hydrodynamic and water quality model and to verify its effectiveness. After the ecological floating bed designed and constructed, we measured its removal effect of sediment in ecological transfered water.This work has the following conclusions: (A)Eclolgical water deversion improvee the water quality of Wenzhou urban sections of Wenruitang water.but failed to reach the current set goats(B)Hydrodynamic model and water quality model can simulate water quality of the urban section of Wenzhou Wenruitang,provide the means.to improve the diversion efficiency,plan hydraulic construciton,governanee the water environment of Wenruitang River.(C)Eclolgical Floating Bed upstream can effectively remove suspended sediment in raw water of eclolgical water diversion.