water treatment coagulant Articles
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An assessment of the use of native and denatured forms of okra seed proteins as coagulants in drinking water treatment
The effects of temperature, storage time and water pH on the coagulation performance of okra seed protein in water treatment were assessed. In a jar test experiment, okra salt extract achieved a notable improvement in treatment efficiency with storage time and showed good performance in quality after thermal treatment at 60, 97 and 140 °C temperatures for 6, 4 and 2 hours, respectively. The ...
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Performance of Moringa oleifera extracts and Sudfloc as coagulant aid in raw water treatment in Mauritius
Coagulation experiments were done using raw water samples from two treatment plants (herein referred to LMTP and LNTP) in Mauritius in jar tests using Moringa oleifera (MO) extract and Sudfloc. Both coagulant aids reduced alum consumption. Sudfloc was required in low concentration as compared to crude extracts of MO. On samples from LMTP, salt extract of MO (MOSE) was six times more efficient ...
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Prediction of coagulation and flocculation processes using ANN models and fuzzy regression
Coagulation and flocculation are two main processes used to integrate colloidal particles into larger particles and are two main stages of primary water treatment. Coagulation and flocculation processes are only needed when colloidal particles are a significant part of the total suspended solid fraction. Our objective was to predict turbidity of water after the coagulation and flocculation ...
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Coagulation Water Treatment vs. Electrocoagulation Treatment
There are many ways to treat water, and one of the most common tactics is coagulation. This method provides clean, safe water and is typically used alongside other standard processes like sedimentation, disinfection, and filtration. All of these methods assist in removing contaminants from water. However, while coagulation water treatment is a good conventional option, a better solution exists ...
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Corn starch-based treatment improves rainwater quality
Rainwater harvesting can provide an alternative water source, which may demand little treatment, depending on the end use. Some starches have been used in water treatment as coagulant/flocculant/filtration aid, and might be applied as primary coagulant. Here, we show direct filtration with hydraulic rapid mixing, using 2–6 mg L−1 cationic corn starch as primary coagulant, considerably ...
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The application of artificial neural networks for the optimization of coagulant dosage
Filtration is the final physical barrier preventing the passage of microbial pathogens into public drinking water. Proper pre-treatment via coagulation is essential for maintaining good particle removal during filtration. To improve filter performance at the Elgin Area WTP, artificial neural network (ANN) models were applied to optimize pre-filtration processes in terms of settled water turbidity ...
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How to Make Wastewater Treatment Flocculation Sustainable, Non Toxic, and Efficient
If you manage a water treatment plant or consult those who do, you know wastewater treatment flocculation is essential to delivering clean, safe, and reliable water. Following coagulation water treatment, flocculation encourages small, suspended particles in water to clump together into flocs, making them easy to be removed by post filtration. However, although flocculation helps remove ...
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UV/H2O2 treatment: an essential process in a multi barrier approach against trace chemical contaminants
The presence of pesticides, endocrine disruptors and pharmaceuticals caused PWN to implement multiple barriers for organic contaminant control in their surface water treatment plants. A combination of advanced oxidation by UV/H2O2 treatment and granular activated carbon (GAC) filtration is installed. Medium pressure UV experiments in a standard pilot reactor have been carried out into the ...
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Seasonal organics variations: effects on the efficiency of water treatment processes
Natural organic matter (NOM) in source water has created a lot of interest in the field of water purification. It is of particular concern for surface water treatment plants since it can produce undesirable disinfection by-products (DBPs), interferes with the performance of water treatment processes such as coagulation, membrane filtration, and oxidation processes, and leads to bacterial ...
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Dependable Pretreatment for UF Membrane Water Treatment System
Lake Forest is a small upper class community along the west shore of Lake Michigan about 35 miles north of downtown Chicago, IL. In 1890 a group of residents started the Lake Forest Water Company on the present site to provide water for the residents of the community. Prior to the spring of 2004, the Lake Forest Water Plant provided traditional water treatment. Coagulating chemicals were added to ...
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Evaluation of fluorescence excitation–emission and LC-OCD as methods of detecting removal of NOM and DBP precursors by enhanced coagulation
Bench-scale tests were conducted to evaluate enhanced coagulation as a method for removing natural organic matter (NOM) from a surface water to reduce the formation of disinfection by-products (DBPs). Aluminium sulphate (alum) and two polyaluminium chloride (PACl) coagulants were used, as well as alum with pH depression. Using a PACl coagulant alone or alum with pH depression was shown to attain ...
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Variations of disinfection by-product levels in small drinking water utilities according to climate change scenarios: a first assessment
In Québec, Canada, shifts in climate patterns (i.e., rainfall increase) could have consequences on source water quality due to the intensification of surface/groundwater runoff contamination events, leading to a decline in drinking water treatment efficiency and ultimately disinfection by-products (DBPs) formation following treatment. To assess the impacts of climate change (CC) scenarios on ...
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7 Common Pitfalls when you choose a Chemical Coagulation Water Treatment System to Treat Your Water
Pretreatment processes in water treatment systems are often crucial to maintaining efficiency and longevity of the downstream equipment, such as membrane filtration. Many systems incorporate a coagulation step that will encourage small suspended solids to aggregate and fall out of solution. By eliminating the larger particles in the solution, filtration membranes won’t foul, tear or clog ...
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The benefits of machine learning and deterministic modelling
Traditionally, the optimum coagulant dose is determined by jar testing which has multiple limitations. These limitations can be overcome by incorporating machine learning and process modelling using raw water quality and process control parameters. Coagulation in water treatment Coagulation is a critical component of water treatment. In order to meet drinking water quality criteria, suspended ...
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The benefit of electrocoagulation in water treatment for agriculture and aquaculture
Now a day’s one of the most intensive and the best field due to which the entire human kind can survive is the field of agriculture and aquaculture. The agriculture industry is a water requirement industry and is in a need of constant free contaminant water supply and so is in fish cultivation. And in order to provide this contaminant free water supply it requires a large scale of water ...
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Enhancing climate adaptation capacity for drinking water treatment facilities
Conventional water treatment processes (e.g., coagulation, flocculation, sedimentation, and filtration) are widely used for producing drinking water from surface water sources. Transient, gradual, or abrupt changes in source water quality that could compromise treatment effectiveness can be triggered by climate and related meteorological events, accidental or intentional contamination, ...
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Application of Direct Filtration to MIEX® Treated River Murray Water
Dissolved natural organic matter (NOM) has been shown to interfere with the coagulation process, particularly with alum (aluminium sulphate) which is the most widely used coagulant in potable water treatment. The additional coagulant demand of the NOM can often be a significant contribution to the overall coagulant dose required for effective turbidity control in conventional water treatment. ...
By Ixom
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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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8 Painful Points of Chemical Coagulation Treatment Plants
Water treatment has evolved tremendously over several decades. What used to be as simple as boiling water or filtering through sand has become an entire industry in its own right. Many treatment processes are based almost entirely around chemical processes that can be quite complex on occasion. It makes sense. Some of the pollutants in wastewater are compounds that are more difficult to deal ...
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Surface waters have varying levels of organics that originate from both natural and anthropogenic sources.
These organic compounds can cause challenges for the water treatment plant by increasing coagulant demand, causing taste and odor issues and increasing demand for disinfectants. Even when the organics themselves are not a health hazard, when combined with chlorine they may lead to the formation of harmful disinfection byproducts (DBPs). Reducing the concentration of organics via various treatment ...
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