Experiment Research On Roof Rainwater And Reused Water Treatment And Recycling

The fast development of cities caused a series of water problems. On the one hand, with the centralization of the people and the economic activities, extension of the urban buildings and increase of the aera of impervious stratum, the flood caused by urban storm flow cannot be neglected. On the other hand, new water-supply souce is urgently demanded for the scarcity of urban fresh water. As a kind of slightly polluted water source, rainwater has less contaminations and it can be used as domestic water and industrial water by simple treatment. So the exploitation of the urban rainwater and making best use of the urban rainwater will be the effective measures of the water-saving city.This test is the method without energy to deal with the roofing rain pilot study aimed at finding a treatment to low rainfall in the area, alleviating urban water shortages. This process is to integrate the flow of Filter and traditional sand filtration -- filtering sand barrels, and its research to address the possibility of domestic grey water. Testing include : monitoring of the different rainstorm lasted get flooded and the water flow of rainwater identification, filtering sand barrels activated, the replacement of the filtering effects of different materials, different pollutants in the raw water through sand barrels after treatment effect study.Experimental results show that the use of high enzymatic than surface roofing material handling stormwater treatment requirements can be met, it can effectively control the water COD, and so the value of ammoniac nitrogen removal effectiveness. For the largest rainfall =1.14L/s, membrane filters filter rainwater reached 22.80 m/h speed in the most adverse conditions, the average air quality for 33.4 CODcr mg/L, CODcr water storage room finally opened for the average water turbidity 20.7 mg/L; to 7.34 mg/L water, Proposed storage room for the ultimate water quality mg/L; ammoniac nitrogen 5.95 to 0.79 mg/L average water quality, water storage room ammoniac nitrogen in the air to 0.81 mg/L;TP final average water quality for 0.041 mg/L, TP storage room for the ultimate water quality 0.038 mg/L. In the rainfall conditions, the membrane filters stormwater runoff to bear 95m2 of roofing, water quality can be achieved at such GB3838-2002 IV water standards and water quality standards CJ25.1-89 living complex water quality requirements.In the second phase of urban grey water treatment process, it became clear that the...