domestic wastewater industry Articles
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Situation analysis of China’s wastewater discharge
Great progress has been made in reducing China’s water pollution after decades of efforts. From the perspective of wastewater discharge, the situation of wastewater discharge since 1985 is analysed in this study, with importance attached to industrial wastewater, including wastewater from township enterprises, and to municipal domestic wastewater. In general, the total wastewater discharge in ...
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Applicability of the sequencing batch reactor for wastewater treatment
The sequencing batch reactor is a viable and flexible tool for the treatment of domestic and industrial wastewater. It removes not only carbonaceous matter, but also nitrogenous species and some biological nutrients. From the economic and operational points of view, it has advantages over the so-called conventional activated sludge system. Besides this, it can be used in various wastewater ...
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Applications of ozone for modern wastewater treatment
Modern Wastewater Treatment Plants (WWTPs) efficiently eliminate organic pollution down to Biological Oxygen Demand (BOD) and Suspended Solids (SS) values of less than 30 mg/l. However, these treated effluents still contain biologically Persistent Organic Matter (POM), characterised by a Chemical Oxygen Demand (COD) of between 50 and more than 100 mg/l. Industrial WWTP effluents have COD ...
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Wastewater Recycling Project
Durban is part of the eThekweni Municipality, located on the east coast of South Africa. The combination of limited water resources in the city along with sewage capacity constraints, led to the investigation of different wastewater recycling processes since the region produces approximately 450million litres of wastewater per day. The project was South Africa’s first private wastewater ...
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Analysis of the contributions of pollution to industrial discharge categories in Korea using the Modified Toxic Weighting Factor
In 2007, 45,163 domestic industrial direct/indirect discharge sources were registered in Korea, which have been categorized into 82 divisions based on the characteristics of their products, raw materials and wastewaters. The purpose of this study was to set priorities using a risk assessment of pollutants toxic weighting for each industrial category with respect to pollution prevention and ...
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Aqwise`s poster at the 2008 Weftec convention - Distribution of microbial population within a moving bed bio-film reactor (MBBR) combining a `denitrfiltration` unit
Introduction At high influent N levels , there is a need in Pre- and Post (Endogenous)-denitrification stages, requiring addition of an external electron donor. Systems based on the MBBR (Moving Bed Bio-film Reactor) process have high potential for treating domestic and industrial wastewater. Among process advantages: Elimination of sludge recirculation, Efficient ammonia and organic ...
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Large-scale solar sludge drying in Managua/Nicaragua
Within the framework of a programme aimed at reducing the biological contamination of Lake Managua, a central wastewater treatment plant for the city of Managua (1.1 million p. e.) was constructed and commissioned at the end of 2009. Annual sludge production amounts to 26,000 m3 and sludge disposal and/or reuse thus present a major challenge. Based on the results of extensive studies, the ...
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Project design of 5 wastewater purification plants planned to be built within the scope of Ergene Basin Protection Action Plan
Ergene Back to Life Project design of 5 wastewater purification plants has been carried out by Enta Engineering which are planned to be built within the scope of Ergene Basin Protection Action Plan. Enta Engineering General Manager Mehmet Yuceyurt believes that plants will be completed in a short period of time as the project has been closely followed by the Prime Minister and other ...
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Comparative evaluation of EDTA, pyridine and acetic acid for the assessment of available heavy metals from domestic and industrial sludges
Various sludge samples from different domestic and industrial wastewater treatment plants were analyzed by Flame Atomic Absorption Spectrometry (FAAS) to evaluate their total and available contents of heavy metals (Pb, Hg, Cd and Zn). The EDTA, pyridine and acetic acid single extraction techniques were applied to these samples with the objective of studying the leaching behavior of the metals in ...
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Water quality index as a tool for wetland restoration
Worldwide, wetlands are subjected to increasing anthropogenic pressures resulting in loss of their hydrological and ecological functions. Such impacts are more pronounced in the case of wetlands in urban areas which are exposed to land use changes and increased economic activities. In many Indian cities, natural water bodies such as lakes are heavily polluted due to runoff from farmlands in ...
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Spatio-temporal variation analysis of hydrochemical characteristics in the Luanhe River Basin, China
The analysis of river pollution and assessment of spatial and temporal variation in hydrochemistry are essential to river water pollution control in the context of rapid economic growth and growing pollution threats in China. In this study, we focused on hydrochemical characteristics of the Luanhe River Basin (China) and evaluation of 12 hydrochemical variables obtained from 32 monitoring ...
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Wastewater. One Name, Many Terms | A Wastewater Glossary | YASA ET Tips
Wastewater, also referred to as sewage, includes water from household or building use (such as toilets, showers, and sinks) that can contain human faecal waste, as well as water from non-household sources (such as rain and industrial use) which for this reason contain organic and inorganic substances that can damage health and the environment. These types of water, after their use, cannot ...
By YASA ET
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How Expansion Joint Expertise Helps Improve Industrial Wastewater System Reliability
Nearly all industries have wastewater treatment plants. These facilities are designed to meet pretreatment requirements imposed by local or state governments. Pretreatment rules were enacted to prevent industrial discharges from affecting or passing through domestic wastewater treatment plants, so industry is seeing upgrades or new builds to comply. Wastewater piping systems are constructed from ...
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Evaluation of the aerobic and anaerobic biodegradability of the antibiotic norfloxacin
The purpose of studying the biodegradability of pharmaceutical compounds is to evaluate their behaviors in relation to the treatment processes generally used in domestic and industrial wastewater treatment plants. The antibiotic norfloxacin was found to be a recalcitrant compound. The studies conducted showed norfloxacin removal rates of 12% and 18% when biomasses from treatments ...
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Industrial wastewater treatment with a bioelectrochemical process: assessment of depuration efficiency and energy production
Development of renewable energy sources, efficient industrial processes, energy/chemicals recovery from wastes are research issues that are quite contemporary. Bioelectrochemical processes represent an eco-innovative technology for energy and resources recovery from both domestic and industrial wastewaters. The current study was conducted to: (i) assess bioelectrochemical treatability of ...
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PET Bottle Washing Line for Domestic PET Bale Material - Case Study
Successful Project Capacity: 6 tons / hr Application: Bottle to Bottle Area: Asia - China Time: 2018-06 Since the Chinese government announced its ban on the import of plastics, China domestic PET bottle recycling industry has undergone a revolution. Many small PET recycling workshops have been banned. Large domestic groups and factories have invested in the PET recycling industry and ...
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Effective carbon and nutrient treatment solutions for mixed domestic-industrial wastewater in India
The present study evaluates effectiveness of up-flow anaerobic sludge blanket (UASB) reactor followed by two post-anaerobic treatment options, namely free-surface, up-flow constructed wetland (FUP-CW) and oxygen-limited anaerobic nitrification/denitrification (OLAND) processes in treating sewage from the peri-urban areas in India receiving illegal industrial infiltrations. The UASB studies ...
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Simulation of municipal-industrial full scale WWTP in an arid climate by application of ASM3
In developing countries, and due to the high cost of treatment of industrial wastewater, municipal wastewater treatment facilities usually receive a mixture of municipal wastewater and partially treated industrial wastewater. As a result, an increased potential for shock loads with high pollutant concentrations is expected. The use of mathematical modelling of wastewater treatment is highly ...
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Variations of nitrogen transport in the mainstream of the Yellow River, China
Three sections along the mainstream of the Yellow River were chosen as sites for monitoring the concentration variations of nitrogen species. First, the nitrogen in the water was mainly dissolved and dominated by nitrate–nitrogen. Second, the nitrogen concentrations in the middle stream were much higher than those in the upper stream, and close to those in the lower stream. Third, the nitrogen ...
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A novel image processing-based system for turbidity measurement in domestic and industrial wastewater
Wastewater treatment facilities are continually challenged to meet both environmental regulations and reduce running costs (particularly energy and staffing costs). Improving the efficiency of operational monitoring at wastewater treatment plants (WWTPs) requires the development and implementation of appropriate performance metrics; particularly those that are easily measured, strongly ...
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