Status of water environment pollution in the Xixi Wetland and its ecological treatment countermeasures

2009 ◽  
Vol 4 (2) ◽  
pp. 228-232 ◽  
Author(s):  
Wenyue Chen ◽  
Jiemin Zheng ◽  
Zhongquan Li ◽  
Guozheng Shen ◽  
Yuchen Li
Keyword(s):  
Water Environment ◽  
Environment Pollution ◽  
Ecological Treatment ◽  
Xixi Wetland

scholarly journals Experimental study on the adsorption of dissolved heavy metals by nano-hydroxyapatite

2020 ◽  
Vol 82 (9) ◽  
pp. 1825-1832
Author(s):  
Yang Zheng ◽  
Jianmin Zhang
Keyword(s):  
Heavy Metals ◽  
Water Environment ◽  
Urban Water ◽  
Environment Pollution ◽  
Adsorption Effect ◽  
Retention System ◽  
Dynamic Experiments ◽  
Matrix Modification ◽  
Dissolved Heavy Metals ◽  
Sand Filler

Abstract Bioretention system is an effective way to solve the problem of urban water environment pollution. In this paper, the difficulty of the existing biological retention system to effectively remove dissolved heavy metals was studied. By comparing the adsorption effect of acid quartz sand filler layers with nano-hydroxyapatite (N-HAP), medical stone, nano-carbon, and biochar, the conclusion is drawn from the static and cylinder dynamic experiments that N-HAP has the best effect of removing Cu2+ and Zn2+, and the effect is long lasting. The scanning electron microscopy results showed that the N-HAP particles were rough and the surface was more rod-shaped, which increased the specific surface area of the N-HAP particles, promoted the complexation and electrostatic interaction of the additives and heavy metal solutions, and facilitated the adsorption of heavy metals. The research results help to improve the technology of filler matrix modification.

scholarly journals FORECASTING ENVIRONMENT POLLUTION LEVELS BY INDUSTRIAL DEVELOPMENT ARISING TO 2020 IN LONG AN PROVINCE

2011 ◽  
Vol 14 (1) ◽  
pp. 29-44
Author(s):  
Phuoc Van Nguyen ◽  
Hien Thi Thu Nguyen ◽  
Truong Duy Cao ◽  
Lam Minh Nguyen
Keyword(s):  
Water Pollution ◽  
Environmental Pollution ◽  
Industrial Development ◽  
Water Environment ◽  
Mathematic Model ◽  
Environment Pollution ◽  
Pollution Load ◽  
Pollution Levels ◽  
Environment Quality ◽  
Industrial Zones

In this article, the results of predicted environmental pollution load of air, water and solid waste by the operation of the park / industrial zones in Long An province by 2020 are presented. Two mathematic model, ISC3 and Mike 11, were used to determine the spread of environmental pollution of air and water. The results showed that, to make the air environment quality meet QCVN standard, we need to cut gas emission to 57% by 2015 and 80% by 2020. For water environment, the forecast maps on spread of water pollution can help to identify the source that cause water pollution.

scholarly journals Water environment pollution with its impact on human diseases in India

2020 ◽  
Vol 4 (4) ◽  
pp. 152-158
Author(s):  
Rakhecha PR
Keyword(s):  
Water Pollution ◽  
Population Growth ◽  
Water Environment ◽  
Water Bodies ◽  
Human Diseases ◽  
Polluted Water ◽  
Environment Pollution ◽  
Pollutant Load ◽  
Key Factor ◽  
Water Pollutant

The problem of water pollution in India is not a new one. It has been an age- old practice that people dispose of their waste into rivers and other water bodies. The consumption of polluted water is intimately connected with the occurrence of many deadly diseases. Rapid and unplanned population growth in India is a key factor to the whole equation of water pollution. This paper provides an overview of population growth, the mechanism of water pollutant load, causes of water pollution in India as well as the diseases resulting from the use of polluted water.

scholarly journals Study on improving the effectiveness of taking off the husk of black pepper (Piper nigrum L.)

2018 ◽  
Vol 1 (T5) ◽  
pp. 50-57
Author(s):  
Hung Ngoc Tran
Keyword(s):  
Water Environment ◽  
Developed Countries ◽  
Black Pepper ◽  
Piper Nigrum ◽  
Environment Pollution ◽  
Production Time ◽  
White Pepper

White pepper is a high value product being preferred by the markets of developed countries. However, the white pepper production time is too long and the procedure needs large amount of water. Our research offered two solutions to over come these disadvantages gradually. The shelling yield of black pepper that was immersed in water with the ratio of 1:1 ( W: W) at 35 oC in 48 hours, was 92.2%. In the case that black pepper was in water with the ratio of 1:1 (W:W) and pectinase with the dose of 4 UI/ 50gr pepper, inculation at 40 oC in 4 hours and then at room temperatmein 24 hours, the effectiveness of removing the husk of the pepper reaches 93.2 % and the content of piperine in white pepper was 6.58 percents. This procedure shortens the time of immersing the pepper and reduces the amount of used water environment pollution.

scholarly journals ASSESSMENT OF CHANGES IN THE QUALITY OF GROUNDWATERIN THE REGION OF THE MUNICIPAL LANDFILL IN WOJKOWICE

2021 ◽  
Vol 20 (1) ◽  
pp. 43-54
Author(s):  
Radosław Karkocha ◽  
Keyword(s):  
Landfill Gas ◽  
Water Environment ◽  
Pollution Index ◽  
Water Quality Monitoring ◽  
Environment Pollution ◽  
Contamination Index ◽  
Water Pollution Index ◽  
Heavy Metal Concentrations ◽  
Groundwater Samples

Aim of the study. Landfilling is an activity, which may threaten the destruction or contamination of the soil and water environment. Pollution can be generated both by leachate and by landfill gas. Legal conditions impose on landfill managers to monitor groundwater around the landfills. The impacted soils and groundwater show high chlorides, sulphates, heavy metal concentrations especially as compared to natural hydrochemical background values. Monitoring results can be analyzed using pollution indicators. The objective of this study was to determine the quality of groundwater in a landfill in Wojkowice (southern Poland) using the Backman index. Material and methods. The novelty of the paper results from the use of a different range of parameters than initially included in the formula. The results of water quality monitoring for three piezometers from 2013–2020 were considered. The contamination index was calculated separately for each of the analysed water samples, taking into account the electrolytic conductivity and the concentration of total organic carbon (TOC), Cd, Pb, Zn, Cu, Cr and the sum of N-NO3, N-NO2 and N-NH4. Results and conclusions. The Backman index values range in the groundwater samples were –5.3 to 603. The value of the Backman index increases with the increase in the concentration of individual parameters in groundwater. In the case of heavily transformed areas, the water pollution index has high values, exceeding 3. The results of this index indicated that the quality of the groundwater around the landfill is bad. In the future, it is planned to expand the range of parameters for calculating the index.

The Application of Hydraulic Model in Water Environment Pollution Simulation

2014 ◽  
Vol 535 ◽  
pp. 436-439
Author(s):  
Lin Bo Zhang
Keyword(s):  
Diffusion Coefficient ◽  
Water Environment ◽  
Environmental Problems ◽  
Hydraulic Model ◽  
Environment Pollution ◽  
Transverse Diffusion

The paper introduces the application of hydraulic model in environmental problems, discusses several examples using hydraulic model in environmental problems and several important factors in the process of the use of hydraulic model to study the water environment pollution simulation, which involves abnormal model, the transverse diffusion coefficient, pollutant simulation and so on. The applicable conditions, constraints and their possible solutions of this technology are also discussed.

Comprehensive Evaluation on Sensitivity of Ecological Environment in Chengde

2012 ◽  
Vol 518-523 ◽  
pp. 1252-1263
Author(s):  
Chun Li ◽  
Jin Ping Qian
Keyword(s):  
Comprehensive Evaluation ◽  
Water Environment ◽  
Ecological Environment ◽  
General Area ◽  
Sensitive Area ◽  
Environment Pollution ◽  
Single Factor ◽  
Evaluation Result ◽  
Factor Evaluation ◽  
Four Levels

This paper adopts the multi-factor comprehensive evaluation to conduct spatial superposition calculation of the classified index of single-factor evaluation result through evaluating soil erosion sensitivity, land desertification sensitivity, susceptibility to stress of water resource and water environment pollution sensitivity, etc, thus getting the result of comprehensive evaluation of ecological environment sensitivity in Chengde. Chengde’s ecological environment has four levels which are extremely sensitive area, medium sensitive area, slightly sensitive area and general area.

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