scholarly journals Basic study of possible improvement of water quality by photo-catalyst, polluted by organic pollutants in presence of aerobic micro-organisms.

2000 ◽  
Vol 12 (1/2) ◽  
pp. 16-19
Author(s):  
Shirou KAWAHARA ◽  
Takashi NISHIYAMA ◽  
Yoshio INOUYE
Keyword(s):  
Water Quality ◽  
Organic Pollutants ◽  
Basic Study ◽  
Photo Catalyst ◽  
Micro Organisms

A basic study on comprehensive water indices using glass fiber filters and a spectrophotometer

1996 ◽  
Vol 34 (7-8) ◽  
pp. 163-168
Author(s):  
Keigo Nakamura ◽  
Yukihiro Shimatani
Keyword(s):  
Water Quality ◽  
Glass Fiber ◽  
Quality Index ◽  
Point Of View ◽  
Absorbance Spectrum ◽  
Water Color ◽  
Quality Change ◽  
Basic Study ◽  
Water Quality Change ◽  
Water Indices

Chemical and biotic indices of water quality have some problems. They need a lot of time to measure and technology, therefore we considered evaluating water color objectively and quantitatively. This method is as follows; after filtering sampling water on the glass fiber filter, absorbance spectrum of this filter is measured by the spectrophotometer. This method does not need, technology and cost. We surveyed the relation between absorbance spectrum and conventional water indices. As a result, this method is very effective to evaluate water quality change from the water color point of view abd it can also evaluate turbidity and Chlorophyll-a very easily. We expect this method to lead to a new water quality index.

Research on Soil Infiltration Systems for Domestic Sewage Treatment

2012 ◽  
Vol 518-523 ◽  
pp. 1969-1972
Author(s):  
Xiao Fang Yue ◽  
Bo Liu ◽  
Lin Fang ◽  
Chang Kun Liu
Keyword(s):  
Water Quality ◽  
Energy Consumption ◽  
Organic Pollutants ◽  
Removal Rate ◽  
Low Cost ◽  
Sewage Treatment ◽  
Solution Process ◽  
Domestic Sewage ◽  
Soil Infiltration ◽  
Hydraulic Load

In this paper, the performance of the constructed rapid infiltration system ( CRI ) for removal of organic pollutants of domestic sewage was investigated. The results showed that the system had higher efficiency of CODCr removal. The removal rate of CODCr was 86.1% by constructed rapid infiltration system without carbonized sludge , 91.8% with carbonized sludge. The system overcomes the disadvantage of traditional wastewater rapid infiltration land treatment system ( RI ) that the hydraulic load is low, but retains the advantages that the solution process are the low cost, the ease of processing, less energy consumption and good water quality.

scholarly journals Simulation of river water quality from in-situ data and satellite imagery, focus on organic pollutants

2017 ◽  
Author(s):  
Tran Thi Van ◽  
Ha Duong Xuan Bao ◽  
Pham Thi Anh My ◽  
Tran Lap Phong ◽  
Tran Viet Tri
Keyword(s):  
Water Quality ◽  
River Water ◽  
Organic Pollutants ◽  
Satellite Imagery ◽  
River Water Quality ◽  
In Situ Data

scholarly journals Potabilidade da água de poços artesianos: diagnóstico de amostras dos municípios do Rio Grande do Sul

2019 ◽  
Vol 41 ◽  
pp. 1
Author(s):  
Sandra Cadore Peixoto ◽  
Carolina Denardi Merlugo ◽  
Anderson Maciel ◽  
Tiago Barboza Solner
Keyword(s):  
Water Quality ◽  
Ph Value ◽  
Iron Concentration ◽  
Rio Grande ◽  
Natural State ◽  
Human Consumption ◽  
Rio Grande Do Sul ◽  
Artesian Wells ◽  
Micro Organisms

Drinking water is all water for consumption. It must have certain amount of dissolved minerals, be free of toxic materials and micro-organisms. It is considered an indispensable resource for man. One of the main problems for the use of water is related to its contamination, that is, this resource has been polluted in such a way that it can no longer consume it in its natural state. However, despite all the efforts to store and reduce its consumption, it is becoming scarce and its quality deteriorates faster and faster. In this way, groundwater has become an important alternative for water supply to communities. Considering the relevance of this theme, this study seeks to make a diagnosis of the water quality of artesian wells of the Central Region of the State of Rio Grande do Sul, in order to prove the potability. For these determinations the experimental procedures were: determination of the pH value; turbidity; temperature; total solids dissolved; color; hardness and residual iron concentration. The evaluation of the results obtained in this study was based on the standards of potability established in Ordinance No. 2,914, of December 12, 2011, of the Ministry of Health, which establishes the procedures for control and surveillance of water quality for human consumption and its standard of potability.Drinking water is all water for consumption. It must have certain amount of dissolved minerals, be free of toxic materials and micro-organisms. It is considered an indispensable resource for man. One of the main problems for the use of water is related to its contamination, that is, this resource has been polluted in such a way that it can no longer consume it in its natural state. However, despite all the efforts to store and reduce its consumption, it is becoming scarce and its quality deteriorates faster and faster. In this way, groundwater has become an important alternative for water supply to communities. Considering the relevance of this theme, this study seeks to make a diagnosis of the water quality of artesian wells of the Central Region of the State of Rio Grande do Sul, in order to prove the potability. For these determinations the experimental procedures were: determination of the pH value; turbidity; temperature; total solids dissolved; color; hardness and residual iron concentration. The evaluation of the results obtained in this study was based on the standards of potability established in Ordinance No. 2,914, of December 12, 2011, of the Ministry of Health, which establishes the procedures for control and surveillance of water quality for human consumption and its standard of potability.

scholarly journals Shift of Sediments Bacterial Community in the Black-Odor Urban River during In Situ Remediation by Comprehensive Measures

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2129 ◽  
Author(s):  
Jian Zhang ◽  
Yun Tang ◽  
Zhanguo Kou ◽  
Xiao Teng ◽  
Wei Cai ◽  
...  
Keyword(s):  
Water Quality ◽  
Bacterial Community ◽  
Organic Pollutants ◽  
In Situ Remediation ◽  
Sediment Remediation ◽  
Overlying Water ◽  
Rapid Urbanization ◽  
Associated Bacteria

The phenomenon of black-odor urban rivers with rapid urbanization has attracted extensive attention. In this study, we investigated the water quality and composition of sediment-associated bacteria communities in three remediation stages (before remediation, 30 days after remediation, and 90 days after remediation) based on the in situ remediation using comprehensive measures (physical, chemical, and biological measures). The results show that the overlying water quality was notably improved after in situ remediation, while the diversity and richness of sediment-associated bacterial communities decreased. A growing trend of some dominant genus was observed following the remediation of a black-odor river, such as Halomonas, Pseudomonas, Decarbonamis, Leptolina, Longilina, Caldiseericum, Smithella, Mesotoga, Truepera, and Ralstonia, which play an important role in the removal of nitrogen, organic pollutants and hydrogen sulfide (H2S) during the sediment remediation. Redundancy analysis (RDA) showed that the bacterial community succession may accelerate the transformation of organic pollutants into inorganic salts in the sediment after in situ remediation. In a word, the water quality of the black-odor river was obviously improved after in situ remediation, and the bacterial community in the sediment notably changed, which determines the nutrients environment in the sediment.

scholarly journals Influencing Factors of Groundwater Organic Pollution around the Bosten Lake Area of Xinjiang, China

2019 ◽  
Vol 98 ◽  
pp. 09029
Author(s):  
Ying Sun ◽  
Jinlong Zhou ◽  
Yinzhu Zhou ◽  
Yanyan Zeng ◽  
Yunfei Chen
Keyword(s):  
Water Quality ◽  
Influencing Factors ◽  
Organic Pollutants ◽  
Lake Water ◽  
Water Samples ◽  
Organic Pollution ◽  
Lake Area ◽  
Bosten Lake ◽  
Plain Area ◽  
Groundwater Samples

To study the status and influencing factors of groundwater organic pollution around the Bosten Lake area (Kaidu River-Kongque River Basin), Xinjiang, China, the pollution index method was applied to 82 groundwater samples and 15 lake water samples for comprehensive pollution evaluation. Results showed that the detection rates of organic pollutants in groundwater and lake water samples in the study area are 24.4% and 6.7%, respectively, but all the water samples have concentrations of organic pollutants less than the standard water quality limits. There are 11 unpolluted groundwater samples, 8 mildly polluted groundwater samples and one mid-polluted groundwater sample, accounting for 13.4%, 9.8% and 1.2% of total groundwater samples, respectively. The detection points of groundwater organic pollutants in the study area are mainly distributed in the piedmont plain area in the northern Yanqi Basin, the Yanqi County and the northwestern plain area of Bosten Lake. Some points sporadically distributed in the urban area in Korla. Groundwater organic pollution around the Bosten Lake area is mainly affected by industrial pollution, agricultural pollution, domestic pollution, vadose zone lithology, surface water quality and land utilization type.

Sign in / Sign up

Export Citation Format

Share Document