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The efficiency of electrokinetic remediation of Cu contaminated groundwater was researched by means of experiments for the complicated remediation of groundwater contaminated by typical heavy metal in this paper, and migration and variation characteristics of Cu was analyzed too. The experimental results indicated that the pH value varied obviously during the electrokinetic remediation because of...
Filter media is the most pivotal element of artificial soil filtration system and directly impact the reduction of contaminants in runoff. Four typical filtration materials including sand soil, boiler slag, furnace cinder and ceramsite are selected and studied in laboratory scale in Beijing. The experiment is carried by two stages. One is selection of filtration media. Firstly, different materials'...
Dissolved organic matters in organic-polluted raw water and their potential to from disinfection by-products during drinking water treatment raise great challenges to the traditional water treatment process. Although many pre-treatment and post-treatment methods have been widely studied to improve the water quality of tap water, these methods are more or less constrained by the public finance or the...
Increasing evidence suggests that nanoscale zero valent iron (nZVI) is one of best materials for the treatment of heavy metal ions in water. In this work, the reduction of Cr(VI) by nZVI was investigated. Laboratory experiments with varied Cr(VI) concentrations and nZVI doses were performed. Chromium removal efficiency decreases as the ratio [Cr(VI)]/nZVI increases due to the limited reaction sites...
Chamber is one of key factors to success for chamber underground infiltration system. As the difference of chamber structure, the capacity of water distribution, passing water and filtration interception for pollutants is different, which is the important factors that impacts hydraulic retention time, microbial life environment and removal rate of CODCr, BOD5, NH4+-N, TP, SS for chamber underground...
Rainstorms can flush large amounts of nonpoint source (NPS) pollution from land sources into water bodies, threatening water supply. On the basis of rainfall events monitoring data, the runoff NPS pollution dynamics were assessed and NPS pollution loads were quantified in the Shaojiagou Stream, a tributary of Shitoukoumen Reservoir. Based on two complete rainfall events data, the average NPS pollution...
Methyl tert-butyl ether (MTBE) is widely used gasoline oxygenate which has been recognized as a hazardous material with high risk of carcinogenesis by EPA ad RCRA. MTBE can contaminate groundwater and soil through leaking from oil products tanks in fuel farms or gas stations. Porous soils can be used to adsorb contaminants such as MTBE. The main objective of this research is to evaluate the effectiveness...
The effect of preoxidation Yellow River with light polluted water by composite potassium permanganate process are studied in the text. The best adding quantity of composite potassium permanganate is 1.5-3.0 mg/l, PAC as the flocculant, the best adding quantity is 60 mg/l. Under these conditions, pretreat Yellow River with mic-polluted water which the results show that permanganate preoxidation obviously...
In this paper, the old simple Municipal solid waste (MSW) landfill pollution risk in China were analyzed. In order to control environment pollution, some countermeasures, such as constructing landfill cover, subsurface vertical barrier, installing bio-filter to reduce CH4 emission, pumping and treating the contaminated water, were working out and analyzed in detail.
Highway runoff is one of the important water resources in urban areas, though severe pollution has curbed its direct use. In this study, a soil infiltration system is proposed for treatment of highway runoff. Bench-scale experiments with different inflow concentrations and system operation modes (continuous/intermittent) have been designed to simulate the highly varied inflow rate and pollution load...
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