coagulant Articles
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Development of automatic coagulant dosage control technology for rapid change of raw water quality parameters
An automatic coagulant dosage control technology for water purification plants was developed to deal with rapid changes of raw water quality parameters. Control logic was developed to decide coagulant dosage based on aluminum concentration in rapid mixing tank water based on results of semi-pilot scale experiments. This logic enabled quick feedback on the excess or lack of coagulant. It was ...
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Algal control and enhanced removal in drinking waters in Cairo, Egypt
Algal blooms at the major water treatment plants in Egypt have been reported since 2006. While previous studies focused on algal types and their correlation with disinfection by-products, correlation between raw water quality and algal blooms were not explored. Therefore, a survey of Nile water quality parameters at a major water intake in the Greater Cairo Urban Region was conducted from ...
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Optimize Chemical Dosage for Water Treatment with UV254
Drinking water plants that use surface water or groundwater under the influence of surface water are susceptible to high levels of organic matter in the raw water. Reduction of organic matter through coagulation/ sedimentation and filtration plays a critical role in lowering the potential for disinfection by-product formation (DBP) and minimizing operational problems. Organic matter in water ...
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Using magnetic powder to enhance coagulation membrane filtration for treating micro-polluted surface water
The magnetic enhanced coagulation membrane filtration (MECMF) process was introduced into micro-polluted surface water treatment. The process was conducted by adding magnetic powder (MP) for enhancing coagulation. By contrasting the water quality parameters including dissolved organic carbon (DOC), UV254 and turbidity of permeates of MECMF and coagulation/flocculation membrane filtration ...
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Evaluation of chitosan as a natural coagulant for drinking water treatment
Chitosan, a natural biopolymer, was evaluated for its ability to be used as a coagulant to treat water for potable use both in isolation and in combination with other water treatment technologies, specifically ion-exchange and activated carbon. Chitosan was found to be very effective for particle removal at doses far below those required for equivalent turbidity removal by inorganic coagulants. ...
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Performance of a novel recycling magnetic flocculation membrane filtration process for tetracycline-polluted surface water treatment
A recycling magnetic flocculation membrane filtration (RMFMF) process integrating circulating coagulation, magnetic enhanced flocculation and membrane filtration was investigated for the treatment of surface water micro-polluted by tetracycline, a typical pharmaceutical and personal care product. A bench-scale experiment was conducted and several water quality parameters including turbidity, ...
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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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City of Houston Total Organic Carbon - Case Study
ABSTRACT The City of Houston, Texas has been aware of the implications that current and pending regulatory standards would have on the operation of their four surface water treatment facilities. In particular, the City has closely monitored changes in regulations related to enhanced coagulation, total organic carbon (TOC) removal, and disinfection by-products (DBP) reduction. The City has, and ...
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Turbidity Measurements in Drinking Water, Effluent Discharges and Coagulant Controlling
This month at Partech Water Instruments we’re talking about our turbidity sensors—fantastic to use as an environmental indicator. So how can they be used? We’re here to tell you about turbidity sensors being utilised for drinking water, effluent discharges and coagulant controlling. Turbidity Sensors and Drinking Water Turbidity sensors are an excellent way of analysing water ...
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Use of a Magnetic Ion Exchange Resin to Improve DBP Precursor Removal and Reduce Coagulant Usage at Lee County`s OLGA WTP
The 5 MGD Olga WTP in Lee County, Ft Myers, treats water from the Caloosahatchee River where TOC and color levels range from 15-25mg/L and 80-350 Pt Co Units respectively. This surface water presents many treatment challenges and treatment costs are high with alum doses in excess of 200mg/L required during times of the year to provide an adequate treated water quality. As part of Lee County’s ...
By Ixom
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A Practical Solution for Real Time Organic Monitoring
Monitoring organics continuously provides instantaneous water quality data that is vital for several of the most common water and wastewater treatment applications. Online organic water quality testing ensures that immediate action can be taken to establish proper treatment. real-time organic monitoring is invaluable for optimizing and controlling coagulant dosing; monitoring performance and ...
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Disinfection of an advanced primary effluent using peracetic acid or ultraviolet radiation for its reuse in public services
The disinfection of a continuous flow of an effluent from an advanced primary treatment (coagulation-flocculation-sedimentation) with or without posterior filtration, using either peracetic acid (PAA) or ultraviolet (UV) radiation was studied. We aimed to obtain bacteriological quality to comply with the microbiological standard established in the Mexican regulations for treated wastewater ...
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Water trends in DWTPs for 2024: digital transformation and automation
Water treatment plants are undergoing unprecedented digital transformation. In 2024, DWTPs will continue to invest in automated technology-based plant management, streamlining their operations. First of all, digital transformation helps to centralize and control data management and therefore bring different DWTP processes together under one umbrella. These processes can be optimized using ...
By Idrica
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Low cost and sustainable surface water purification methods using Moringa seeds and scallop powder followed by bio-sand filtration
A simple and inexpensive water purification method was developed using natural coagulant (Moringa seed powder) and antibacterial agents (scallop powder) followed by bio-sand filtration. In this study, surface water from different sources (e.g. pond, canal, lake and river) treated with combined Moringa seed powder, and scallop powder (MOSP) at a ratio of 2:1 for 10 minutes showed a clear water ...
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Removal of DOC and DBP Precursors from a Surface Water Supply
Background: The 2.5 MLD Airey’s Inlet Water Treatment Plant is conventional alum coagulation, sludge blanket clarification, filtration WTP. It sources raw water from the 514 ML Painkalac Dam situated in the Angahook State Park This raw water is soft and high in colour and dissolved organic carbon (DOC). After heavy rainfalls, colour and DOC content are known to further increase along with a ...
By Ixom
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Feed-forward coagulant control using online UV/Vis monitoring
Water quality from the Murray River, Australia, can vary considerably and is expected to become more challenging to treat due to recent drought followed by widespread flooding and future climate change impacts. Better tools are required to help plant operators maintain water quality. Morgan water treatment plant (WTP) operates overnight to take advantage of off-peak electricity, however the ...
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The impact of low-flow season on source drinking water quality, Rosetta branch, Egypt
The present work was conducted to document the problems raised regarding low-flow in the Rosetta branch, Egypt and to develop management options to protect drinking water sources. The water quality was monitored during low-flow periods at four drinking water intakes. Results showed an increase in electric conductivity (EC), ammonium (NH4), nitrite (NO2), phosphate (PO4), and total organic ...
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Water Quality Monitoring Solutions for Industrial Wastewater
Coftec are leaders in the supply water quality monitoring solutions for industrial wastewater. Process water quality is often extreme in its composition, for example high in acids, solids and other parameters or radically changing temperature. Coftec designs, builds and if required, operate solutions for the managing industrial wastewater streams. We can offer the spectro::lyser titanium pro and ...
By Coftec
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Dissolved air flotation separation for pretreatment of membrane bioreactor in domestic wastewater treatment
Due to requiring higher water quality standards over time, new technologies are being employed for wastewater treatment. Dissolved air flotation (DAF) and membrane bioreactor (MBR) technologies are widely employed as new technologies in wastewater treatment. DAF is used due to its excellent separation capability of suspended solids as well as oily material. MBR is used because it may provide a ...
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Case Study: Puerto Rico WTP Saves Thousands with UV254 Organics Monitoring
The Los Filtros Guaynabo Water Treatment Plant in Puerto Rico installed a Real UV254 M3000 analyzer to monitor raw water organics fluctuations and feed a coagulation optimization system supplied by local partners Montanas Electric, Inc. and Nator Corporation. With reliable real-time organics information the plant was able to automate their coagulant dosage, improving efficiency while maintain ...
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