Conclusion The eutrophication of the headwater of Jianhu lake in Shaoxing is serious. Prevention measures such as controlling the pollution sources,strengthening synthetical governmnet,making long-effect controlling plans are suggested.
According to the evaluation mode of eutrophication and the organic pollution index,it is the middling phosphorus limit nutrient level in autumn 2004,basically,and the organic pollution degree remained the second level.
Taking the mature biofilm technology of American AquaMats as a reference,the effects of improving the eutrophication water body by algae-bacterium biofilm with different materials or setting modes as carries was compared.
A pilot-scale test was carried out,combining seven reaction ponds parallel,with continuous influent and effluent. As the device had obvious effect on eutrophication water pollution removal,the removal efficiencies of CODCr,TN,NH4-N and TP were 13.35%~58.6%,23.6%~65.8%,15.5%~72.9% and 16.8%~76.9% higher than those of control group.
Since eutrophication has become increasingly severe in China, nitrogen and phosphorous have been the concern of wastewater treatment, especially nitrogen removal.
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Discharge of wastewater containing nitrogen and phosphate can cause eutrophication.
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The Synecological Approach to the Problem of Eutrophication
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The Corg-rich unit formed due to a short-term abrupt increase in the productivity of phytoplankton related to eutrophication of water, probably, as a result of the recycling and redistribution of biophile elements.
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The silting and eutrophication of the gulf waters resulted in a change in the composition and structure of the coral reef communities via the reduction or elimination of certain coral species.
Ya-Er Lake is located in the west part of E-Cheng county, Hubei Province. In the past it covered about 6000 ha (now 2000 ha) and was one of the main fish production district in the province. Since 1962 the lake was polluted by wastewater of a chemical plant which manufactured parathion, malathion, dimethaote and BHC. The aquatic ecosystem was ruined. About forty percent of fish population were of abnormal form. After the ecological surveys carried out in 1972—1974, the pollution control of Ya-Er Lake was st...
On the basis of morphological characteristics in degradation of the dominant plankters and macrophytes in Lake Donghu, Wuhan, Hubei Province, the content of particulate organic detritus(POD) from three sempling stations, which represent three different regions, i.e., a bay region, a pelagic zone, and a zone of luxuriant aquatic vegetation in the Lake was quantified according to the method adopted by Davis(1958) throughout the year 1980. The bits of organic detritus were considered as various geometrical sha...
In this paper, the effect of hydrochemistry character on hydrobios fauna and the relation between biological form and eutrophication were studied.Dealing with wu Liang Su Hai as a whale, there are 87 species of phytoplankton. 64 species of zooplankton, 12 species of zoobenthos. Number of species for eutrophication occupies absolute dominant position. Structure of various phyto-planktin groups are chlorophyto and cyanophyta and bacillariophyto. However, the cyanophyta is predominant species, it o...