Purification Effect Of Artificial Ecological Water Grass On Water Quality Of Urban Water Body

Artificial plants technology has been widely used.The key to the technology of artificial plants is the material of artificial plants,the material is influence the effect of water purification.At the same time,water purifying agent has also been widely applied.In this experiment,the object of study are basalt fiber ecological grass and carbon fiber ecological grass.The film conditions of two kinds of ecological grass and water purification effect under different parameters were studied.The optimum dosing conditions of a product water purifying agent were studied.And then studied the effect of water purification on the combination of ecological grass and microbial water purification agent.The main results are as follows:（1）The ecological grass hanging film test.The two kinds of ecological grass form a mature biofilm at about 20 days.In the stage of film hanging,The basalt fiber ecological grass on the removal rate of the COD,NH₃-N,TP were about 77.3%、81%and 55%,the carbon fiber ecological grass rass on the removal rate of the COD,NH₃-N,TP were about 68.4%、77%and 51%,Two kinds of ecological grass had the same effect on water quality during the film hanging stage.（2）Study on the operating parameters of ecological grass.The removal rate of COD,NH₃-N and TP with the two kinds of ecological grass increases with the increase of hydraulic retention time,the hydraulic retention time is very suitable for two days,Better effect in summer high temperature.Under the best conditions,the removal rates of the COD,NH₃-N and TP were 82%、81%and 52%,the removal rates of carbon fiber ecological grass of the COD,NH₃-N and TP were 76%、75%and 48%.（3）Study on optimum adding conditions of water purifying agent.Optimum adding conditions of water purifying agent were 0.1g/L,25℃and the pH is 7,and the removal rate of COD is 78.9%.（4）Study on the combined hanging fim of ecological grass and water purifying agent.The time of film hanging can be shortened when the water purifying agent is added,and two kinds of ecological grass can form a mature biofilm at about 12 days,and the removal rate of COD,NH₃-N and TP is also improved,the combination of basalt fiber ecological grass and water purifying agent for the removal for three rate were about 86%、89%and 59%,the removal rates of the combination of carbon fiber ecological grass and water purifying agent for the three were about 80%、85%and55%.（5）Study on the effect of water purification after combination of ecological grass and water purifying agent to form mature biofilms.The combined use of ecological grass and water purifying agent has improved the removal rate of COD,NH₃-N,but the removal efficiency of TP is not good.The combination of basalt fiber ecological grass and water purifying agent for the removal rate of COD,NH₃-N and TP were 91%、90%and 57%,the removal rates of the combination of carbon fiber ecological grass and water purifying agent for the three were about 85%、86%and 53%.（6）Water purification effect of water purifying agent and ecological grass combined at low temperature.Under the condition of low temperature 13¹7℃in winter,the combination of basalt fiber ecological grass and water purifying agent for the removal for three rate were about 78%,73%and 41%,,the removal rates of the combination of carbon fiber ecological grass and water purifying agent for the three were about 71%,66%and 36%.