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The research of phosphorus removal mechanism in water hyacinth pond, which was used to treat sewage in Shanghai rural area, was carried out. There were three possible ways, plant absorption, assimilation by microorganism attached to the roots of water hyacinth and combination of sedimentation and suspended microorganisms, that phosphorus could be removed from the system. It was found that water hyacinth...
Water hyacinth (Eichhornia crassipes) is a floating aquatic plant which has been employed for wastewater treatment in many part of the world. A lot of researches on the performance of aquatic plant treating sewage had been carried out and it was concluded that water hyacinth was one of the plants who had the best performance. But few reports about what role the metabolism of aquatic plants played...
According to the special drainage system in our country, being differ from the Separate and combined sewer system, there has defined a new drainage system - disordered drainage system(DDS). In the light of the representative DDS- Furongjiang drainage system, the discharge pollutant characteristic has been analyzed, the result indicates that there is the peak value phenomenon of the pollutant concentration...
Three different operation modes were used in vertical flow constructed wetland system treating rural wastewater. The results showed that, low water level operation can provide more oxygen for organic matter and NH4+-N removal, but lack of the anoxic condition for denitrification. Remarkable removals of organic matter, NH4+-N and TN were achieved under the cyclic batch operation. Due to the lack...
By the data analysis of the Chunshenlu sewage system, a separated sewage system, Minhang District, Shanghai, it shows that the sewage transportation volume in a day in the more rainfall month is general larger than the less rainfall, an increase of up to 101.86%; and the monthly average transportation volume during the rainy day is greater than corresponding the whole, the rate of increase of 3% to...
Using water hyacinth to treat the domestic wastewater, on-site, from dispersed farmhouses in Shanghai rural area, the relevant influencing factors that are temperature, hydraulic retention time (HRT), water depth (h) and water hyacinth density (WHD), were investigated. The influence of temperature was that water hyacinth had different growth rate in different seasons, which lead to varied pollution...
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