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Evolution of dehydrogenase activity was studied in the activated sludge of biological contact oxidation process for treating photographic waste water, different influence factors were considered such as temperature, content of pollutant, removal rate of pollutant, etc. the result indicated that dehydrogenase could represent the activity of activated sludge quickly and exactly, and it could be one...
This paper presents the research work of treating straw pulp gray water by ABR, The author examines the effects of COD removal rate at different hydraulic retention time,and different volume load by ABR, Results have shown: as the HRT is 8 h, COD removal rate is 40.5%, raises the biodegradability (BOD/COD)value from 0.25 to 0.52. Greatly improved the biodegradability of wastewater.
The water of Wu Jia-dui Wetland park in Kunming come from the park dike outside Da-Guan river inferior V river water and the wastewater of more than 1200 persons in Wu Jiadui village. The water quantity for the 10000 m3/d,During the period of adopting Wetland engineering to manage, circulate a management, developped the biologic food chain of the integrity in the water body, Make the water quality...
As a major part of the Dianchi Lake, the Caohai Lake is in a serious eutrophication situation, which is imminent for pollution treatment. An improved floating bed, which called combined packing with emergent aquatic plants canna indica, submerged aquatic plants Hydrilla verticillata and aeration device, was used to purify the water taken from the Caohai Lake. Compared with the traditional floating...
Biological early warning systems (BEWS) which detects toxicity by tracking the physiologic responses of the whole organisms has been developed in recent years. In the paper, we firstly apply the C4.5 decision tree Algorithm to the biological early warning systems and propose a new BEWS which can detect toxicity by classifying the flea's behavior data. The new system is meaningful to both biological...
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