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The performance of a spectrometry system (SPEC) for identification of trace activities in water is presented. The SPEC detector is a part of the TAWARA_RTM platform designed for monitoring of water processed for distribution by the Waterworks Company. The SPEC system is dedicated for identification of radioisotopes emitting γ-rays of energies between 50 keV and 2 MeV. The SPEC detector comprises a...
The hazardous substances listed in the EU Water Framework Directive (Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for the Community action in the field of water policy) as priority and priority hazardous substances, HELCOM substances of specific concern to the Baltic Sea and some other pollutants which our team deemed potentially problematic for the Baltic...
The pollutants in urban storm runoff, which lead to non-point source contamination of water environment around cities, are of great concerns. The distributions of typical contaminants and the variations of their species in short term storm runoff from different land surfaces in a seaside city in South China were investigated. The concentrations of various contaminants, including organic matter, nutrients...
The feasibility of using constructed mangrove wetlands to treat saline municipal wastewater was evaluated in this study. Constructed wetland, acting as an ecological engineering alternative, is capable of reducing NH4+-N, TN, TP and COD from saline wastewater. During the 10 months' operating period, the constructed wetland was operated with salinity increasing from 10 to 50 parts per thousands (ppt)...
Cu is the most common heavy metal contaminant in the environment. The engineering and technology of construct wetland have been used to control the pollution of water due to its economy and efficiency and the hydrophytes were the most important constituents of construct wetland. In April, 2011, Cu2+ accumulation content in different parts of Zizania latifolia, Acorus calamus, Phragmites australis...
EDTA, Dodecylbenzene sulfonate, HCl, Tartaric acid and CaCl2 were used as extractants to remove Cr and Pb from Pb, Cr-contaminated soils. Batch equilibrium experiments were performed under variation of solid:liquid ratio and washing time. The results indicated that Citric acid, EDTA and Tartaric acid were effective for extracting Cr from the soils and EDTA, HCl and Tartaric acid were effective for...
Effective use of resources is an important issue for sustainable development of mining. The quality assessment and classified use of deep mine water is an important way to ease mine water crisis. With mining depth increasing in Huize lead-zinc mine, water inflow is significantly increasing. In this paper, deep mine water environmental quality is assessed by TOPSIS method and comprehensive index method...
Radiation-induced removal of Pb2+ (0.1 mmol·L−1) in aqueous solutions by γ-irradiation was studied in this paper. The results showed that the removal of Pb2+ by γ-irradiation was first-order reaction. Several factors which might affect the removal efficiency of Pb2+ were examed. Dissolved oxygen (DO) in water restrained the removal of Pb2+. Sodium carbonate (Na2CO3) was added into the solution as...
The effect of different organic acid on heavy metals removal from sludge was investigated. It indicated that the inhibition of various organic acids on heavy metals removal was substantially discrepant. To different heavy metals, the sensitivity of effect extent was followed as Pb>Cu>Zn. The organic acid with two carbonyls had no negative effect on the growth of sulfur-oxidizing bacteria. As...
Northern Section in Jiangsu Province of the Beijing-Hangzhou Grand Canal (from Yangzhou City to Weishan lake) is an important part of water transfer from south to north project (east route) because the water quality will impact the quality of transportation water. In recent years, many local governments have been paying more attention to control the water quality discharged into this river from different...
Arsenic is a toxic heavy metal. It has caused serious pollution of groundwater recent years, the treatment of arsenic contamination drinking water becomes a hot research topic. In this paper, the granitization red soil, which is widely distributed in South China, cheap easy to get is used as the adsorption material, studied by adsorption of arsenic removal performance. The results show that after...
There are six samples to be sampled as the research subjects of the Bulao river. The contents and fractions of heavy metals is determined by ICP-MS and the results showed the concentration of heavy metals' residual form is very high. and Total organic carbon is analysed by liquitoc analyse appliance. The results showed that the relations between TOC and acid extractable form is good.
The construction of municipal waste water treatment plants is carrying out actively all around the country due to the urgent requirement of the restoration of water pollution. Since 2007, Zhejiang province has taken the lead of possessing a waste water treatment plant in each county. This paper discusses and summarizes acquired achievements and effective measurements of some municipal waste water...
The electrokinetic remediation technique of soil contaminated by heavy metal lead was researched by means of experiments in this paper, and the characteristic and mechanism for distribution and migration of lead were analyzed too. The experimental results indicated that the concentrations of heavy metal changed obviously in soil in electric field and most of the heavy metal pollutants could be enriched...
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