coagulation Articles
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Removal of titanium dioxide nanoparticles by coagulation: effects of coagulants, typical ions, alkalinity and natural organic matters
To investigate the possibility of removing titanium dioxide nanoparticles (TiO2 NPs) from water by coagulation, as well as to find the optimal coagulant and experimental conditions for TiO2 NP removal, four types of coagulant were adopted: polyferric sulfate (PFS), ferric chloride (FeCl3), polyaluminum chloride (PACl), and alum (Al2(SO4)3). It was found that the removal of TiO2 NPs by ...
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Performance of PAC/PDM composite coagulants for removal of algae from Lake Taihu waters in summer
The enhanced coagulation of algae-rich raw water from Lake Taihu in summer was studied by use of composite coagulants. The composite coagulants were composed of polyaluminum chloride (PAC) and polydimethyldiallylammonium chloride (PDM) with various intrinsic viscosity values (0.55–3.99 dL/g) and different mass percentages (5–20%) in the formulation. For raw water with temperature of 28–29°C and ...
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Coagulation and flocculation in water and wastewater treatment
Coagulation and flocculation are an essential part of drinking water treatment as well as wastewater treatment. This article provides an overview of the processes and looks at the latest thinking. Material for this article was largely taken from reference (1). Coagulation and flocculation are essential processes in various disciplines. In potable water treatment, clarification of ...
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Evaluation of sludge handling using acidification and sequential aluminum coagulant recovery: case study of El-Sheikh Zayed WTP
Huge amounts of water treatment sludge are wasted annually in Egypt. One common practice of sludge handling is to discharge into waterways or by disposal after drying into landfills. Currently, there is a critical need for sustainable solutions that provide environmental protection as well as benefits for water producers. Coagulant recovery is not new but is still a good solution for sludge ...
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Enhanced Coagulation Using a Magnetic Ion Exchange Resin
The objective of this investigation was to examine the effectiveness of a magnetic ion exchange resin (IVIIEXR) provided by ORICA Australia Pty Ltd. of Victoria, Australia to enhance the coagulation of disinfection by-product (DBP) precursors. The IVIIE)C resin purportedly adsorbs natural organic material, thereby lowering the coagulant demand of the water, as well as lowering its DBP formation ...
By Ixom
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Evaluation of Ceraflow-50 as a Filtration Media for Hexavalent Chromium Treatment - Case Study
Project Description Pilot testing was conducted to evaluate the relative performance of 4 filter media, including Ceraflow-50, as part of a reduction coagulation filtration (RCF) treatment process for the removal of hexavalent chromium (Cr(VI)) from groundwater. This evaluation was conducted at multiple well sites for a water utility in California. The RCF process achieves Cr(VI) removal by ...
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What is Zeoturb Bio-Organic Liquid Flocculant Treatment?
In most standard water treatment systems, there is a flocculation process that is used to reduce the concentrations of solids within the effluent stream. This particular process makes use of substances that aid in the clumping together of suspended particles. There are several different substances that have been used for decades, but research continues looking for more. Ideally, newer flocculants ...
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Water Treatment
Water treatment is performed in order to improve water quality. The processes employed for water treatment depend on the quality of the water supply. In all cases, water has to be disinfected in order to deactivate any existing microorganisms present in water. So far, this technique was proved to be the most important for the protection of human life. It is commonly done using chlorine or ...
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Conneaut Lake Park, Pennsylvania - Case Study
AdEdge Water Technologies, LLC. (AdEdge) was selected in 2009 by the U.S. EPA and the host site in Round 2a of the Arsenic Demonstration Program to implement a turnkey arsenic treatment for the Conneaut Lake Park (CLP), in Conneaut Lake, PA. The CLP water system is served by two wells with a design flow of 250 gpm. The wells provide potable water for a community with over 100 connections and a ...
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Produced Water Case Study
Challenge Managing the increasing volumes of produced water associated with oil & gas production as well as sourcing water for operations is becoming more challenging for E&P companies. Handling oily wastewaters with high and variable contents of O&G and TSS requires complex and costly treatment trains with conventional technologies. To evaluate akvoFloat ’s capability to ...
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Membrane Bioreactor Pilot
The problem A company which produces a product that requires a constant supply of relatively clean water is planning to expand by adding new process units online. The plant currently uses well water as a supply to its production. The water production from the well is limited. They need to install a system to produce reuse water to reduce the amount of water required from the onsite well in ...
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Oily Water Treatment: How to treat using Advanced Electrocoagulation Technology
We cook with it. Use it on our skin. Paint with it. Use it to fuel our cars. Our own bodies even produce it. However, something doesn’t quite add up here. Clearly, you wouldn’t cook with motor oil and you wouldn’t put olive oil in your gas tank. So why do we call these different products by the same general name? What oily water treatment is used to treat these different types ...
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Case Study: Ohio WTP Monitors Organics with UV254/UVT Analyzers
Water Treatment Plant Trusts and Relies on Real Tech UVT for Monitoring A surface water treatment plant (WTP) in Ohio has successfully used six Real Tech Real UV254 online analyzers in their WTP for over seven (7) years to help monitor and achieve the highest levels of organics removal and UV disinfection performance. Throughout the past 7 years the WTP has found Real Tech’s instruments to ...
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Filtronics Electromedia® Removes Arsenic From 150 ppb to Below 3 ppb
Arizona State Highways 85 and 86 meet in Pima County in southwestern Arizona. The intersection used to form a “Y” and gave birth to a town name. The unusual name comes from a state law that required town names have three letters, so “Y” became Why. What’s not so unusual is that the town of Why, like many Arizona communities, has high levels of arsenic in their well ...
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Oil Well Production Water - Case Study
Introduction Clean Water Technology, Inc. (CWT) is a global water and wastewater treatment firm serving Clients worldwide. The Colombian based SAIDA S.A. (Soluciones Ambientales Integrales de La Amazonia “SAIDA”), provides wastewater treatment for several oil well processors in the area. With increased production from several of their Clients, SAIDA needed to expand their Waste Water ...
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Case Study – Food/Beverage Industry / TSS/BOD/FOG reduction
Challenge A fish meat processing plant wanted to reduce their effluent discharge costs and eliminate chemical cost in primary waste water treatment. Solution Genesis Water Technologies with its local partner provided engineering, and design of a electrocoagulation solution with prescreen and post solids separation that eliminated chemical usage in the primary clarification process. The raw ...
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State of the art treatment for Arsenic, color, and Hydrogen Sulfide - Case Study
New Arsenic Regulations How meaningful to the average water customer are µg/l or parts per billion? Not very. How about the word “arsenic”? That will ring some bells as the mystery novel poison-of-choice. But with new, lower EPA arsenic standard of 10 ppb that went into effect Jan. 16, cities with arsenic problems are required to inform customers in writing of non-compliance, ...
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Flint Must Make Us Ask: Is Our Water Ready for an Emergency?
In emergency situations, providing access to and cleansing water is as important as the availability of the water itself. Even when available, non-potable is a significant danger. The United Nations says diarrhea caused by consuming unsafe water is a top cause of morbidity due to malnutrition, contributing to roughly 60% of deaths of children under five years olds in developing countries and ...
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How does GWT Solve Problems of UF Water Purification to Optimize this Process?
In one of the previous articles on ultrafiltration, we had talked about some of the common problems associated with UF water purification. Some of these issues are avoidable and others can be mitigated with proper system management. Knowing how to deal with such problems is key to optimizing a membrane filtration process. When designing ultrafiltration systems, it is imperative to keep these ...
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Decoding the AdEdge treatment matrix
U.S. drinking water utilities come up against a variety of water quality issues. From aesthetic issues to naturally occurring contaminants and contaminants resulting from industry processing, no water source is without problems. Contrarily, many of them have co-occurring contaminants, which complicates the treatment process. Although there is no single treatment solution that will successfully ...
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