wastewater research Articles
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Twenty-five years of ASM1: past, present and future of wastewater treatment modelling
Activated sludge systems have been applied for 100 years now. Over the course of the years, researchers have developed various models to describe activated sludge processes. The main aim has been to gain a better understanding of the conditions that favour the conversions of carbon, nitrogen and phosphorus present in wastewater, and associated oxygen consumption and sludge production. The ...
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Advanced oxidation processes with coke plant wastewater treatment
The aim of this study was to determine the most efficient method of coke wastewater treatment. This research examined two processes – advanced oxidation with Fenton and photo-Fenton reaction. It was observed that the use of ultraviolet radiation with Fenton process had a better result in removal of impurities. ...
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Business Models: Where there’s muck, there’s money
In the developing world, the business of sanitation is rarely considered to be a money maker. However, new developments in the productive use of human waste are opening up real opportunities for cashing in on urban wastewater and sludge. Research carried out by the International Water Management Institute (IWMI) is attempting to establish where and how such models can be made socially or ...
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Sono-biodegradation: a promising alternative to existing bioremediation methodologies
Pollution of fresh water has become a serious concern today for developing countries. There are umpteen treatment methodologies and protocols, but still there exists a demand for new technologies for wastewater treatment. Extensive research on pollutants and increased toxicological studies have paved the way for new technologies, such as ultrasound treatment of pollutants and wastewater ...
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A new approach to implementing decentralized wastewater treatment concepts
Planners and decision-makers in the wastewater sector are often confronted with the problem of identifying adequate development strategies and most suitable finance schemes for decentralized wastewater infrastructure. This paper research has focused on providing an approach in support of such decision-making. It is based on basic principles that stand for an integrated perspective towards ...
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CST Covers Replaces Fiberglass with Aluminum Domes case study
Twin 65’ diameter aluminum domes Ironwood, MI 2000 CST Covers recently completed construction of a second pair of wastewater tank covers at the Gogebic-Iron Wastewater Treatment Facility in Ironwood, Michigan. This most recent contract consisted of twin 65' diameter Aluminum Domes for the facility's primary clarifiers. Previously, CST Covers replaced tank covers following a disastrous ...
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Application of response surface methodology as a new PID tuning method in an electrocoagulation process control case
In this work the application of response surface methodology (RSM) to proportional-integral-derivative (PID) controller parameter tuning for electrocoagulation (EC) treatment of pulp and paper mill wastewater was researched. Dynamic data for two controlled variables (pH and electrical conductivity) were obtained under pseudo random binary sequence (PRBS) input signals applied to manipulated ...
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Dynamic perspective on the relation between environmental policy and eco-efficiency: the case of wastewater treatment, waste and energy efficiency in the Dutch paper and board industry
The relation between environmental policy and innovation is complex. This paper aims to gain insight into the way accumulation of policy measures, or in other words, the increase of policy pressure, affects research activities and eco-efficiency. Three environmental domains have been researched for the Dutch paper and board industry: wastewater, waste and energy. Three trends (19802003) are ...
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Innovation in radioactive wastewater-stream management. Part II: theoretical model and experimental verification
The present work is the second part of the authors' innovative method for radioactive wastewater-stream management, by volume reduction, by a mutual heating and humidification of a compressed dry air introduced through the wastewater. In this part, to determine the optimal operating conditions, a theoretical model describing volume reduction of the radioactive wastewater stream is achieved. A set ...
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Electrocoagulation Systems for Wastewater Treatment
PREDEST Electrocoagulation Technologies, as part of YASA Industries, is committed to create a sustainable world with its equipment for effluent treatment plants. 1. We have mastered the craft of transforming wastewater from factories into reusable water with maximum energy efficiency. 2. With custom made electrodes we can reduce and coagulate pollutants from any industrial effluent. 3. ...
By YASA ET
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On the removal of silver and antimony radionuclides from radioactive liquid waste by some classical means
After partial upgrading of a research reactor at the Pakistan Institute of Nuclear Science and Technology, Islamabad, some waste effluents having 110mAg and 124Sb with higher activity levels than the disposal limits piled up because the waste storage capacity was not yet enhanced. Experimental work was conducted to arrive at some optimum procedure for the treatment of the waste to ensure smooth ...
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Researchers investigate wastewater reuse in Namibian town
A multi-year project in Namibia, headed by scientists from the Technische Universität Darmstadt, is looking for the best way to upgrade wastewater stabilization pond systems so the water can be reused to irrigate animal fodder crops. Despite its simple aim, the project has the lengthy name of “EPoNa-upgrading wastewater ponds to generate irrigation water, using the Cuvelai-Etosha ...
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Remove starch from your diet
CETCO Oilfield Services LiquiSorb™ 200 provides solidification cost savings program over normal wastewater treatment and haul off. Using LiquiSorb 200 allows wastewater treatment plants with significant levels of high starch solids to reduce the amount of chemicals being used in their treatment processes. The use of LiquiSorb 200 encapsulates solids and fixates hazardous components into a safe, ...
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Atmospheric Microplastics Collecting in National Parks
A new study has tracked dispersal of the particles following atmospheric patterns over long distances Plastic is slow to break down on a molecular level, but it readily breaks into smaller and smaller shards and fibers that can cause health problems and environmental damage. We call these tiny bits of plastic in the environment microplastics, and, according to new scientific research, 11 billion ...
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Water matrix effect on UV photodegradation of perfluorooctanoic acid
The widespread detection of perfluorinated compounds (PFCs) in the water environment has been a concern for the last several years, while effluents from wastewater treatment facilities are the major sources of these compounds. Even advanced oxidation technologies (AOTs) are not useful for mineralization of the compounds due to their very high stability. Photochemical techniques using particularly ...
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Sludge accumulation and conversion to methane in a septic tank treating domestic wastewater or black water
Although the septic tank is the most applied on-site system for wastewater pre-treatment, limited research has been performed to determine sludge accumulation and biogas production in the tank. Therefore a dynamic mathematical model based on the Anaerobic Digestion Model No. 1 (ADM1) was developed for anaerobic digestion of the accumulated sludge in a septic tank treating domestic wastewater or ...
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Cavitational technology in wastewater treatment process
Cavitation is one such recent technique which has been found to be substantially beneficial in wastewater treatment. Cavitation can be described as formation, growth and sub-sequent collapse of cavities releasing large magnitudes of energy locally, creating conditions similar to hot spots, and also generating strong oxidizing conditions by way of production of hydroxyl radicals and also hydrogen ...
By GlobeCore PC
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Education Programs
Community concern about water and environmental issues is increasing and the community is becoming increasingly well informed about water issues. Many water authorities now undertake community education programs to increase understanding of local water issues. Programs commonly include information on local water sources and how to save water and often include ...
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Can Toilet-to-Tap Overcome Yuck Factor?
UC Riverside researchers use a taste test for recycled wastewater Much has been made of the “yuck factor” associated with drinking recycled wastewater, but Daniel Harmon, a University of California Riverside psychology graduate researcher, recently conducted an experiment to determine whether the yuck is only in our heads. Harmon’s research question isn’t only an ...
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Case study - KLa Slot Injector™ Aeration System For CFAS Process
Project Name: Touch Panel Manufacturing Plant Wastewater Treatment Location: Tainan Science-Based Industrial Park, Taiwan Type of Bio-Process: CFAS Aeration/Mixing Technology: KLa Slot Injector System Operational Since: July, 2011 The Challenge The plant manufactures touch panel and polarizer which are materials for LCD (Liquid Crystal Display) assemblies. Since the manufacturing process is a ...
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