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The treatment of high concentration organic wastewater by microwave Fenton process was studied in this paper. The input volume of Fenton reagent, microwave power, reaction time, initial pH value is investigated to study the impact of the effect of the high concentration organic wastewater treatment. The optimum condition of Microwave-Fenton oxidation is: the pH reaching 3, Fenton reagent composition...
By investigating the nitrogen concentrations in effluents of the horizontal subsurface-flow constructed wetlands under the conditions of different kinds of substrates, residence time and heights, as well as the nitrogen concentrations changes along the flow in the wetlands, the nitrogen removal routes in the wetlands were analyzed. The results demonstrated that the wetland system with zeolites demonstrated...
This paper researched on the simulated flotation wastewater treatment technology. Experiments were performed by the operating manner of Anaerobic-BAC. Compared with natural photo degradation, the treatment effect of Anaerobic-BAC was obvious. The experimental results show that the biodegradability was greatly improved, the B/C could be increased from 0.09∼0.19 to 0.17∼0.37. Under this experimental...
The reason of the water pollution lies in a super mark of the nitrogen, phosphor in the eutrophic lake. Should investigate its reason, keep the lake water from in the eutrophic lake from the source head, Should control into the index sign of the lake water quality; Make all wastewater all treatment, Each the municipal wastewater treatment plants is normal press design scale to circulate also. Improve...
Many wastewater treatment plants (WTPs) in China still discharge effluent into rivers and lakes. A quantitative microbial risk assessment (QMRA) of infection by Giardia was performed to determine the human health risks associated with the use of an effluent discharging river for recreational purposes, irrigation and source of drinking water in north China. The average public exposure to cysts was...
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...
With the rapid development of metropolis, the surface water pollution in china suburban is attracted much more attention. In this paper, the ecological restoration technologies, which are accordant with the status of suburbs development, are carefully picked out. After the key characteristics of them are evaluated, the selection method of ecological restoration technologies is proposed. The selection...
In order to provide a theoretical support to operation and management for a wastewater treatment plant which wastewater is mixed with domestic sewage and industrial wastewater, some sludge activity or specific oxygen uptake rate (SOUR) impact factors such as temperature, pH, MLSS and hazardous chemicals etc. are researched on bio-treatment system in a wastewater treatment plant in Jiangnan. It is...
fundamental principle of wastewater treatment by natural freezing (WTNF) is discussed with specifying the binary phase diagram for a kind of simulated wastewater with one contaminant X. Three current applications of WTNF are outlined among which unidirectional downward freezing (UDF) is emphatically introduced. The main influencing factors for UDF are reviewed. Utilization of WTNF as a pretreatment...
This paper studied the effect of microbial species grow speed(MPGS), soluble microbial populations(SMPs) on the excess sludge production in the oxic-settling-anoxic process (OSA process), a modification of conventional activated sludge process by inserting a sludge holding tank in a sludge return line. The OSA process may provide a cost-effective way to reduce excess sludge production in activated...
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