scholarly journals Sewer Water Effect on the Corrosion of Cast Iron before and after Treatment

2019 ◽  
pp. 1-7
Author(s):  
Mona A. A. Abdelfattah ◽  
M. Sobhi
Keyword(s):  
Water Quality ◽  
Weight Loss ◽  
Cast Iron ◽  
Quality Parameters ◽  
Water Effect ◽  
Agriculture Waste ◽  
Before And After ◽  
Agriculture Wastes ◽  
Grape Stalks ◽  
Sewer Water

This study aimed to compare and evaluate the effects of sewer water treated by bio-filter reactors using agriculture waste and that untreated on the corrosion of cast iron pipes. The bio-filter reactor used in this study composed of two types of agriculture wastes which are a two layer of both grape stalks and rice husk. Also, the sewer water quality parameters were tested and calculated before and after treatment. The corrosion rate was tested chemically by using the weight loss technique and it was found that the rate in case of iron immersed in sewer water before treatment was higher than that immersed in treated one.

scholarly journals Plankton and water quality variability in an estuary before and after the shrimp farming effluents: possible impacts and regeneration

2017 ◽  
Vol 65 (3) ◽  
pp. 495-508
Author(s):  
William Bauer ◽  
Paulo Cesar Abreu ◽  
Luis Henrique Poersch
Keyword(s):  
Water Quality ◽  
Quality Parameters ◽  
Pacific White Shrimp ◽  
Shrimp Farming ◽  
Water Quality Parameters ◽  
White Shrimp ◽  
Zooplankton Abundance ◽  
Patos Lagoon ◽  
Short Period ◽  
Before And After

Abstract Water quality, chlorophyll a, phytoplankton, proto and mezo-zooplankton abundance were spatiotemporally evaluated in an estuary receiving effluents from a Pacific white shrimp Litopenaeus vannamei farm in Patos Lagoon estuary, Southern Brazil. Samples were taken before (BD) and; 1 day (1 PD) 5 days (5 PD), 10 days (10 PD), 20 days (20 PD) and 30 days (30 PD) after the effluents discharge. Some water quality parameters were affected by the effluents discharge; however, these changes were restricted to a distance of 20 m from the effluent discharge channel for a period of 5 days. The microbial community was dominated by chlorophyceae, followed by diatoms, cyanobacteria and ciliates. There was an increase in the abundance of different groups on the 1 PD sampling compared to BD. The zooplankton abundance was low in practically all sites, except for 30 PD sampling. The meso-zooplanktonic organisms were represented by copepods, mostly Acartia tonsa. Despite some effects on water quality and phytoplankton and protozooplankton abundance until 5 PD sampling, these alterations dissipated in a short period of time. We conclude that the environment quickly assimilated the effluents discharge, and the water quality parameters remained within the limits stipulated by standard guidelines.

Hydrogeochemical Mechanism of the Petroleum Hydrocarbon Pollution in Karst Fissure Groundwater System

2013 ◽  
Vol 295-298 ◽  
pp. 159-163 ◽  
Author(s):  
Zhen Min Ma ◽  
Yun Yun Luo ◽  
Yun Zhi Fang ◽  
Yu Song Hou
Keyword(s):  
Water Quality ◽  
Petroleum Hydrocarbons ◽  
Petroleum Hydrocarbon ◽  
Water System ◽  
Quality Parameters ◽  
Groundwater System ◽  
Hydrocarbon Pollution ◽  
Groundwater Environment ◽  
Before And After ◽  
Fissure Water

The research of hydrogeochemical mechanism of petroleum hydrocarbon in karst fissure groundwater system is important to predict the trend of petroleum hydrocarbons and the change of groundwater environment. We take the karst fissure water system as the research object, where there is a refinery. The variation of SO42-, HCO3-, NO3-, NO2-, HS- can be used as a hydrogeochemical sign of petroleum hydrocarbon pollution by analyzing the change of water quality parameters before and after karst fissure water contaminated by petroleum hydrocarbon. It has been also analyzed systematically that hydrogeochemical mechanism including desulfurization, denigration and ion exchange happen during the pollution process in the karst fissure water system. It is pointed out that the human activities have a great impact on the groundwater and changes of environment.

Effects of Two Types of Landfills on River Water Quality and Endocrine Disruptor Concentrations Before and After Rainfall in a Subtropical Climate

2009 ◽  
Vol 44 (4) ◽  
pp. 355-363 ◽  
Author(s):  
Chia-Wei Lin ◽  
Mei-Hui Li
Keyword(s):  
Water Quality ◽  
River Water ◽  
Quality Parameters ◽  
River Water Quality ◽  
Water Quality Parameters ◽  
Sanitary Landfill ◽  
Garbage Dump ◽  
Before And After ◽  
Dilution Effects

Abstract One closed uncontrolled landfill, the Neihu garbage dump, and one active controlled landfill, the Sanzhuku sanitary landfill, were selected for investigation of their leachate characteristics and effects on adjacent river water quality before and after rainfall in northern Taiwan. A total of seven samplings were made during February and June 2007, with four samplings done after individual rainfall events on study sites. Water quality of runoff samples collected from the Sanzhuku sanitary landfill showed less pollution than the water quality of leachates collected from the Neihu garbage dump; however, some water quality levels of leachate samples collected from the Neihu garbage dump were relatively high, such as ammonia nitrogen (NH3-N), orthophosphate (PO43-) and biochemical oxygen demand (BOD5). At the uncontrolled dump, rainfall lead to dilution effects on river water NH3-N and PO43- concentrations, but not other water quality parameters. In contrast, the concentrations of bisphenol A (BPA) and nonylphenol were increased in both types of landfills after rainfall in the present study. Dilution effects of rainfall on most water quality parameters and toxicity tests were observed in the Neihu garbage dump leachates after rainfall, but not for the Sanzhuku Landfill runoff. The highest concentration of BPA measured in this study was 25.8 μg L-1 in the Sanzhuku sanitary landfill runoff after the heaviest rainfall event, during which 236 mm of rainfall accumulated over four days. The results of this study suggest that both uncontrolled and controlled landfill leachates can be an important potential pollution source of BPA to adjacent water bodies.

Advances in Fisheries Bioengineering

2008 ◽  
Keyword(s):  
Water Quality ◽  
Quality Parameters ◽  
Aeromonas Salmonicida ◽  
Fish Culture ◽  
Water Filtration ◽  
Culturable Bacteria ◽  
Yersinia Ruckeri ◽  
Creek Water ◽  
Before And After ◽  
The U.S

Abstract.—A water filtration and ozonation system was recently installed to treat creek water used to culture species of concern at the U.S. Fish and Wildlife Service’s Northeast Fishery Center, Lamar National Fish Hatchery (NFH). Past experience with fish culture indicates that the following bacterial pathogens are endemic to the creek water supply: <em>Aeromonas salmonicida</em>, <em>Yersinia ruckeri</em>, <em>Flavobacterium columnaris</em>, and <em>Flavobacterium psychrophilia</em>. Water samples were collected from sites located before and after filtration and ozonation and examined for culturable bacteria. Variable operation of the filtration/ozonation system was used to examine (1) the effect of microscreen filtration (i.e., using drum filters containing 37-μm sieve panels) on ozone inactivation of bacterial microorganisms, (2) the effect of dissolved ozone contact times on inactivation of bacterial microorganisms, and (3) the effect of water quality fluctuations on the dissolved ozone demand measured during the course of these tests. Inactivation exceeded 98% for all bacteria when ozone <em>C*t </em>values were about 1.0 and reached 100% at 21.3, regardless of water quality parameters or implementation of microscreen filtration. These results indicate that the use of ozonation to treat surface water supplies used for fish culture facilities will effectively inactivate the majority of bacteria entering the system and will likely serve to prevent introduction of bacteria that can be pathogenic to fish.

scholarly journals Assessment of Underground Water Contamination and Effect of Textile Effluents on Noyyal River Basin In and Around Tiruppur Town, Tamilnadu

2008 ◽  
Vol 5 (4) ◽  
pp. 696-705 ◽  
Author(s):  
A. Geetha ◽  
P. N. Palanisamy ◽  
P. Sivakumar ◽  
P. Ganesh Kumar ◽  
M. Sujatha
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Water Contamination ◽  
Underground Water ◽  
Quality Parameters ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Textile Effluents ◽  
Before And After ◽  
Physical And Chemical

A systematic study has been carried out to assess the underground water contamination and the effect of textile effluents on Noyyal River basin in and around Tiruppur Town. Twenty six sampling locations were selected at random and the ground water samples were collected mostly from tube wells at Noyyal River basin in and around Tiruppur area. The samples were analyzed for major physical and chemical water quality parameters like pH, alkalinity, electrical conductivity (EC), total dissolved solids (TDS), total hardness (TH), Ca, Mg, Na, K, Cl & SO42-. It was found that the underground water quality was contaminated at few sampling sites due to the industrial discharge of the effluents on to the river or land from the Tiruppur town. The sampling sites namely Orathupalayam, Karuvapalayam, Kulathupalayam, Uttukuli and Kodumanalpudur showed high deviations in total alkalinity, total hardness, Ca, Mg and chloride concentrations. Hence our study concludes that the underground water quality study in this region shows a constant variation in different parameters in different periods (before and after monsoon). So it is highly important to take periodical monitoring of the underground water quality in this region for our future sustainability

Cytotoxicity reduction of wastewater treated by advanced oxidation process

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Water Quality ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Quality Parameters ◽  
Quality Parameter ◽  
Treated Wastewater ◽  
Water Quality Parameter ◽  
Textile Printing ◽  
Before And After

The degradation of printing dyes from textile printing industry effluents was carried out by Advanced Oxidation Process (AOP) in which heterogeneous photocatalytic treatment of textile printing wastewater using UV/H2O2/TiO2 system was studied. For the treatment of textile effluents different concentration of titanium dioxide (TiO2) and effect of application time of UV radiation was investigated. The degradation of treated wastewater was estimated spectrophotometrically. To check the extent of mineralization and decolorization after treatment water quality parameter such as percentage degradation, COD, BOD, TOC, pH, DO and toxicity were studied. Before treatment the values of water quality parameters were as; COD (1950 mg/L), BOD (963 mg/L), TOC (3410 mg/L), pH (9.6) and DO (1.77 mg/L). After application of UV/H2O2/TiO2 degradation was observed to be 72% and reduction in COD, BOD, TOC were 58%, 57%, 48%, and increase in DO level was up to 49% respectively. For the evaluation of the toxicity of photocatalyticaly treated wastewater, Allium cepa and brine shrimp test were also carried out before and after treatment of printing wastewater.

Analysis of the Relationship between River Flow and Water Quality before and after the Wenchuan Earthquake

2013 ◽  
Vol 664 ◽  
pp. 164-168
Author(s):  
Feng Qian ◽  
Bo Hu ◽  
Jing Jun Liu ◽  
Wei Lin ◽  
Ming Biao Xiong
Keyword(s):  
Water Quality ◽  
River Water ◽  
Wenchuan Earthquake ◽  
River Flow ◽  
Nitrogen Concentration ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
Total Hardness ◽  
Before And After ◽  
The Relationship

“5.12 Wenchuan earthquake”triggered floods, landslide, collapse and secondary geological disaster, trigger a new soil and water loss, having the significant influence to the local river water quality.This article through the statistical analysis of jiangyou, beichuan station 2006 ~ 2011 water conditions material, discussing the before and after the earthquake disaster areas the river flow change on the influence of river water quality. The results showed that the affected areas of ammonia nitrogen content after the earthquake are more than that before the earthquake content .with flow increased, ammonia nitrogen concentration is higher, flow is low, the water quality parameters of concentration decreased; The total hardness reduced during the earthquake, with flow increased, total hardness concentration is reduced, is negatively correlated; The change of flow to fluoride content effect is not obvious.

scholarly journals Use of sodium chloride and zeolite during shipment of Ancistrus triradiatus under high temperature

2011 ◽  
Vol 9 (4) ◽  
pp. 909-914 ◽  
Author(s):  
Wilson F. Ramírez-Duarte ◽  
Carolina Pineda-Quiroga ◽  
Nhora Martínez ◽  
Pedro R. Eslava-Mocha
Keyword(s):  
Water Quality ◽  
High Temperature ◽  
Sodium Chloride ◽  
Dissolved Oxygen ◽  
High Temperatures ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
High Concentration ◽  
Before And After ◽  
Total Ammonia

The use of sodium chloride (0.5 g/L and 1 g/L) and zeolite (22.7 g/L) during shipment (48 h) of Ancistrus triradiatus at high temperatures (between 24.5 and 34ºC) were evaluated. Several water quality parameters (dissolved oxygen, pH, conductivity, and total ammonia) were measured before and after shipment. Glycemia was measured before shipment and at 24 and 48 h after shipment. After shipment, a resistance test was carried out in a high concentration of sodium chloride, and mortality was recorded after shipment, and 7 days post-shipment. While the two evaluated substances increased survival of A. triradiatus challenged by high temperatures during shipment, the best result was obtained with 1 g/L of sodium chloride.

scholarly journals Impact Assessment of the Wastewater Treatment Plants’ Discharges on Maritsa River

2021 ◽  
Vol 25 (2) ◽  
pp. 169-182
Author(s):  
Tony Venelinov ◽  
◽  
Galina Yotova ◽  
Veronika Mihaylova ◽  
Svetlana Lazarova ◽  
...  
Keyword(s):  
Water Quality ◽  
Wastewater Treatment ◽  
Surface Water ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Quality Parameters ◽  
Sampling Point ◽  
Before And After ◽  
Wastewater Samples ◽  
The Impact

Data analysis of wastewater samples at the outlets of wastewater treatment plants (WWTPs) of Pazardzhik, Plovdiv and Svilengrad, which discharge into the Maritsa River is presented. Total monthly loads for 2017 at the outlets are calculated using the monthly averages for the concentrations of chemical oxygen demand, biochemical oxygen demand, total phosphorus and total nitrogen (TN) and the monthly averages for the flow rates. The contributions of the WWTPs to the total river loads emphasize that the impact of WWTPs of Pazardzhik and Plovdiv is significantly greater than WWTP of Svilengrad. Additionally, river water samples were collected before and after the discharge points of the WWTPs in August 2018 and analyzed for water quality parameters listed in Directive 75/440/EEC. Comparison between the river concentrations before the outlet of WWPT - Pazardzhik and after the last sampling point (the outlet of WWTP - Svilengrad) indicates an increase for all the studied parameters, except for Al and Cu. Based on the results obtained for TN, the category of the surface water is significantly deteriorated after discharge of the WWTP - Plovdiv. Wastewater effect on the river surface water is also estimated by using a battery of ecotoxicological tests. The results are presented and compared by the classical approach using categorization based on water quality indicators.

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