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During the last two years, data sets from three groups and twelve sampling points were used to investigate historical changes between the concentration of the cyanobacteria and the concentrations of total nitrogen (TN), total phosphorus (TP), TN/TP, chemical oxygen dawdling (COD), NO3-, pH, and Chl-a in a shallow temperate zone lake (Guishui Lake, Beijing). The aim of this paper was to evaluate changes...
Compared with the effect of total phosphorus removal by modified peat and ammonium nitrogen removal by modified zeolite respectively, ammonium nitrogen and total phosphorus removal by modified peat associated with modified zeolite from micro-polluted scenic-water were studied in this paper. The surface structures of natural material, modified material and the modified material after adsorption saturated...
The present work consisted in the study of Titania/Zeolite catalyzed ozonation for nitrobenzene removal. Catalytic activity of the supported TiO2 is strongly influenced by the heat treatment temperature. Titania/Zeolite calcined at 600??C showed the best activity. An approximate increase of 21% in removal rate was achieved for catalytic ozonation compared with single ozonation. Kinetic study of dissolved...
Organic contaminants are harmful to body health, and are usually contained in waste water, so it is necessary to determine and monitor them. The demand for real-time analysis and online examination of organic contaminants in water has presented a challenge to analytical and physical chemist. Raman Spectroscopy is a molecular vibrational spectroscopic technique, and Raman effect is caused by interactions...
Phoslock is a specially modified clay product, designed for permanently removing soluble phosphorus (SP) from water body, as the SP is a main driver for algae bloom. On-site pilot-scale trial on Phoslock application for Lake Dianchi water has demonstrated Pholsock is a very effective agent in SP removal from Lake Dianchi water. From the on-site pilot-scale trial, Phoslock can either quickly remove...
Soils polluted by Chromite Ore Processing Residue (COPR) was sampled as study objects. Modified BCR sequential extraction procedure was adopt to analysis the chemical speciation of hexavalent chromium in the soils from Qingdao Hongxing Chemical Plant. The results show that, more than 80% of the total hexavalent chromium is the weak acid extractive speciation, and the water soluble speciation hexavalent...
The characteristics of morphological change of Mammalian Vero cells exposed to typical chemical pollutant 2, 4, 6-trichlorophenol (TCP) were studied, and its sensitivity and correlation were compared to that of cells proliferation inhibition tested by methylthiazol-2-yl-2, 5-diphenyl tetrazolium bromide (MTT) assay. The morphological change of Vero cell exposed to leachate from the Products Related...
The purpose of this study was to choose a fine chemical to efficiently remove ammonia nitrogen from the ammonia water in AS Process, which provides a new available approach to treat coking wastewater. The experiment adopted "Air Stripping and Adsorption" to remove ammonia nitrogen from the ammonia water, and studied the reaction temperature T, pH, the time of stripping t, the dosage of the...
Wood extractive brings more difficulties on the treatment of polluting wastewater from wood industry and paper mill, Therefore, many enterprises have to raise pretreated procedure of wood chips of papermaking to decrease the disadvantageous impacts from wood extractive. However, wastewater from wood chip pretreatment becomes a difficult and urgent issue. Eucalyptus camaldulensis has been widely planted...
Phyllostachys heterocycla is mainly used for pulping. But water and other chemical aids are severely wasted because the content of extractives is high. What's worse, water pollution from the extractives is very serious in South China. Therefore, the acetone extractives of Phyllostachys heterocycla chips were identified by Py-GC/MS. The acetone extractives contains 80 compounds namely lupan-3-one (8...
In order to study the treatment of dye wastewater by foam fractionation, basic violet 5BN was used as a model system, and Sodium Dodecyl Benzene Sulphonate (SDBS) was selected as the collector in this paper. In the optimal condition, the enrichment rate was 61.81, and the decolorization rate (R) was 92.53%. The decolorization rate, the flow rate and concentration of foamate, and the decolorization...
Microcystines (MCs) are well known as its hepatotoxins produced by blooms of toxin cyanobacteria (blue-green algae) abundant in surface water used as drinking water resource and have drawn attention of environmentalists world over by the adverse health effects. The affects and the reaction character of ClO2 removing MC-RR were studied, and the results show that ClO2 can remove MC-RR effectively. When...
Fog and rain water samples were collected at Pancheng in Nanjing area, China during two consecutive winters from 2006 to 2007. Chemical characterizations of these samples are analyzed and summarized. In general, the average ion concentrations and electrical conductivity (EC) are much higher, while acidities are lower in fog water with respective to those in rain water; EC and most ion concentrations...
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