Showing results for: scaling treatment Articles
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Evaluating the application of Microbacterium sp. strain BR1 for the removal of sulfamethoxazole in full-scale membrane bioreactors
Microbacterium sp. strain BR1 is a bacterial strain that recently received attention for its capability to mineralize sulfamethoxazole (SMX) and other sulfonamides. In this study, the survival of Microbacterium sp. in municipal sludge waters was tested in batch experiments to explore optimal process conditions. Inoculation of Microbacterium sp. was subsequently performed in a pilot ...
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More efficient alkalisation with ground limestone in groundwater treatment
Most Finnish groundwater must be alkalised before use as municipal drinking water because it is corrosive. The corrosiveness is due to low pH and softness of water. Groundwater also often contains aggressive carbon dioxide (CO2), so there is more free CO2 than is required to keep calcium and hydrogen carbonate in solution. The most popular alkalisation method in the past was addition of sodium ...
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Exploring the potential synergistic effects of chemical disinfectants and UV on the inactivation of free-living bacteria and treatment of biofilms in a pilot-scale system
The main objective of this study is to explore possible synergistic or additive effects of combinations of chemical disinfectants (sodium hypochlorite, peracetic acid, hydrogen peroxide, chlorine dioxide) and UV in their efficacy in inactivating free-living bacteria and removing biofilms. In contrast to most studies, this study examines disinfection of municipal water in a pilot-scale system ...
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Fluorescent microspheres as surrogates to assess oocyst removal efficacy from a modified slow sand biofiltration water treatment system
There has been a resurgence of interest, technological advancement, and implementation of biologically active slow sand filtration technologies for small-scale potable water treatment in North America. Modelling the fate and transport of pathogenic microorganisms is vital to assess technological safety and for licensing, permitting and regulatory validation. The efficacy of a modified slow sand ...
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Linking community profiles, gene expression and N-removal in anammox bioreactors treating municipal anaerobic digestion reject water. Environmental Science & Technology
Abstract: Anaerobic ammonium oxidation (anammox) requires 60% less oxygen and no external organic carbon compared to conventional biological nitrogen removal (BNR). Nevertheless, fullscale installations of anammox are uncommon, primarily owing to the lack of well-established process monitoring and control strategies that result in stable anammox reactor performance. The overarching goal of this ...
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Pros and Cons of Tertiary RO Waste Water Recycling for Municipal & Industrial Organizations
Tertiary RO waste water recycling has become a suitable solution to augment water supplies to combat water scarcity across the world. RO desalination in tertiary wastewater processes has proven to provide a cost efficient way to reuse water for both municipalities and industrial organizations. Experience has shown that tertiary RO waste water recycling with proper pretreatment in the primary and ...
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Using ‘TransMembraneChemiSorption’ (TMCS) for Ammonia Removal from Industrial Waste Waters
Dissolved gases like NH3, H2S or NOx in waste water lead to contamination in the sewage system and high treatment costs for municipal waste water treatment plants. This translates into high penalty fees that are paid by the company discharging these contaminates into the sewage stream. In many cases a membranebased water treatment system can be justified because of a favorable pay back time. ...
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A basic guide to municipal water treatment & its specialized areas
Clean, safe, potable water is meagre today. Statistic says, presently around 1.2 billion people in this advancing world don’t have access to safe drinkable water. The scarcity of water stand stood as the most common yet perilous problem, the current society is facing these days. The scarceness of water already affects each and every continent of the world, and the problem is not a newer ...
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Park City, Utah Arsenic removal from ground water
Background Park City Utah Water, which serves a population of 6,500, has five water sources. Spiro Tunnel and Spiro Portal are two that were in need of Iron and Manganese removal as well as above limits for Arsenic. Filtronics was engaged by the engineering firm of Eckhoff, Watson and Preator (EWP), Salt Lake City, to perform pilot tests for the Park City Municipal Corporation. The purpose of ...
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Arizona Group Using Beer to Win Acceptance for Wastewater Reuse
An Arizona group is leveraging interest in craft beer to educate the public about water scarcity and the growing need for water reuse by having the public taste brews created from treated wastewater. The Pima County Southwest Water Campus is aiming to eliminate negative public perception of water reuse by using a touring beer tasting to promote the process as a viable solution for water ...
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Ozone is Not Just for Residential Potable Water Treatment
It has been over 170 years since the d iscovery of the ozone (O3) molecule. Since that time, scientists and engineers have been testing and evaluating ways to use ozone in many different processes, from water and air treatment to surface and food sanitation. The evolution was somewhat slow in the early days, taking nearly 50 years before Europeans found, in 1886, that ozone could be used for ...
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Practical challenge testing of a ceramic membrane module in a full-scale mobile drinking water treatment system
Challenge testing was carried out of full-scale prefiltration and ceramic ultrafiltration (UF) modules in a mobile drinking water treatment system. Three consecutive indirect integrity tests were performed using naturally contaminated public drinking water, stocking with wastewater as well as addition of powdered activated carbon. Besides checking the removal efficiency and integrity of the ...
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Case Study: Municipal Water Works Various Municipalities in Different Countries
Many Municipal Water Works and maintenance department engineers have been dealing with corrosion and scale which cause pipes to burst or leak (known as Physical Non-Revenue Water, or PNRW) lost is expressed as % of the volume per km of piping network per day. WATER SYSTEM CHALLENGES Typically, water is fed to every house or building or around the city (or municipality) through a network of ...
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Climate Change and Water Issues
Water supplies are being threatened by climate change, endangering food and energy supplies as well Any discussion of climate change and water issues runs the risk of creating an artificial distinction between many fundamentally intertwined forces, with water as just one facet of a complex set of challenges. Because climate change interacts not just with water security but also with energy and ...
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