raw water Articles
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Algae control in New Jersey raw water reservoir - Case Study
Application: Raw water reservoir, Ecuador, July 2013 Description: Installation of three LG Sonic® e-line units to cover a water surface of a 24,000-m2 raw water reservoir, which is further treated in the local drinking water plant Project objective: The raw water reservoir experienced problems with algae growth. Additionally, they settled down on the liner prior to entering the drinking ...
By LG Sonic
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Mild desalination of various raw water streams
For chemical industries, fresh water availability is a pre-requisite for sustainable operation. However, in many delta areas around the world, fresh water is scarce. Therefore, the E4Water project (www.e4water.eu) comprises a case study at the Dow site in Terneuzen, The Netherlands, which is designed to develop commercial applications for mild desalination of brackish raw water streams from ...
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IFFERNET, France: Ecoskid–Elimination of turbidity and microbiological retention
The Iffernet plant is located in the southwest of Cahors. The four boreholes at Treboulou can together supply an available water flow of around 230 m3/hr. The main characteristic of the raw water is a highly variable turbidity: 2 to 190 NTU, sometimes as much as 300 NTU.The station was built in two phases: first a skid in 2001, then an Ecoskid™ in ...
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Raw water reservoir - Case study
Topics: blue-green algae, taste & odor, THM removal, TTHM, hypolimnetic oxygenation, MN and FE control, treatment savings Customer: Contact information is available upon request from Medora Corporation: 866-437-8076 info@tnedoraco.com Overview: This reservoir is the raw water supply reservoir for a city, with the water treatment plant (WTP) situated adjacent to the lake. This man-made ...
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The interaction between natural organic matter in raw waters and pesticide residues: a three dimensional excitation–emission matrix (3DEEM) fluorescence investigation
This paper examines the interaction between dissolved natural organic matter and pesticide residues, both of which are found in raw water sources, using three dimensional excitation–emission matrix (3DEEM) fluorescence spectroscopy. It was observed that pesticide residue at 0.1 mg L−1 formed a complex with humic-like fluorophores that are commonly found in raw water samples. ...
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Formation characteristics of haloacetic acids from phenols in drinking water chlorination
Haloacetic acids (HAAs) are typical chlorination disinfection by-products in drinking water. Apart from natural organic matter, synthetic organic compounds in raw water contribute to HAAs due to their high frequency of detection in raw water and high reactive activities with chlorine. Formation characteristics of HAAs from synthetic organic compounds were investigated using seven phenols as ...
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Research on raw water quality assessment oriented to drinking water treatment based on the SVM model
Raw water quality variation has a great effect on drinking water treatment. To improve the adaptivity of drinking water treatment and stabilize the quality of treated water, a raw water quality assessment method, which is based upon the support vector machine (SVM), is developed in this study. Compared to existing raw water quality assessment methods, the assessment method studied herein is ...
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Effects of Cylindrospermopsis raciborskii (cyanobacteria) on the swimming behavior of Daphnia (cladocera)
This study aimed to test the effects of raw water samples from a eutrophic reservoir and of a saxitoxin‐producing strain of Cylindrospermopsis raciborskii on the swimming behavior of two key herbivore species of Daphnia. Two complementary approaches were used, acute bioassays and behavioral assays using an automated movement tracking system for measuring the activity parameters: swimming time, ...
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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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An investigation into a treatment strategy for the Berg River water at the Voëlvlei water treatment plant
The main aim of this study was to determine a treatment strategy for the Berg River water at the Voëlvlei water treatment plant (WTP). Jar tests were conducted using ferric and aluminium sulphate as coagulants to determine the optimum treatment parameters of the Berg River water and the Voëlvlei WTP raw water. The results for the Voëlvlei WTP raw water and the Berg River water with ferric ...
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Cyanobacteria, Taste & Odor Control for Raw Water - Case Study
Dramatic decrease in taste & odor complaints, beneficial increase in biodiversity. Topics: raw water, cyanobacteria, blue-green algae, cyanotoxins, taste and odor, algaecides Reservoir Overview: Man-made drinking water impoundment fed by a feeder canal. Surface Area: 160 acres. Average Depth: 42 feet. Max Depth: 79 feet. Pre-Deployment Conditions: Frequent applications of ...
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Use of chitosan in coagulation flocculation of raw water of Keddara and Beni Amrane dams
The effectiveness of chitosan as a coagulant flocculant in surface water treatment has been studied. Tests were carried out in laboratory on treated and raw water. The treated water was mixed with high and low concentrations of bentonite to simulate turbid water. This treated water provides from water treatment plant of Algiers (Boudouaou site) which is supplied by both dams of Keddara and Beni ...
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Influence of coagulant/lime dosing sequence on treatment of soft humic waters
The influence of dosing sequence of lime and alum as a coagulant in the treatment of soft humic waters (requiring pre-alkalinisation of raw water) was studied. The experiments show that the traditional dosing order, i.e. pre-alkalinisation first and coagulant second, might give worse results in comparison with the reversed order, i.e. coagulant dosing followed by pre-alkalinisation. The ...
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Cyanobacteria control in a small raw water pond - Case Study
Topics: cyanobacteria, blue-green algae, aquatic weeds, raw water, cost savings Reservoir Overview: Raw water reservoir for a small water treatment faciltiy. Surface Area: 800 square meters (0.7 acres) Max Depth: 3.7 meters (17.1 ft.). All inflow is received from a nearby ...
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Competitive removal of DOM and bromide in raw waters by MIEX and iron coagulation
Dissolved organic matter (DOM) and bromide as principal precursors to halogenated disinfection byproducts (DBPs) have potential risks on the safety of drinking water after disinfection. Removal of DOM and bromide in raw water from two different waterworks using magnetic ion exchange resin (MIEX), ferric coagulation and their combination was investigated. Results showed that as MIEX dose ...
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Coongulla Raw Water Project - Case Study
Project Details Construction Date March 2015 Location Coongulla Categories: Pump System, Pipeline Project Description REQUIREMENT Gippsland water needed an upgrade to its existing pump system for the supply of water to various townships in the area. The original system was very old to the point it was almost unusable. It comprised a pump that could be lowered into the ...
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Raw water intake monitoring - Case Study
The Situation Hydrocarbons in municipal water supplies, including fresh water and desalination systems, are commonly limited to less than 1 part per million. Surface water from rivers, lakes, or the sea with marine traffic, nearby pipelines, or regular flooding can be contaminated by hydrocarbons. Freshwater treatment systems can be damaged by hydrocarbons or allow them to pass through ...
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The effect of shear rate on aggregate size distribution and structure at steady state: a comparison between a Taylor–Couette reactor and a mixing tank
The paper deals with the dependence of aggregate properties on the shear rate (G) at steady state. Aggregation of natural raw water and ferric sulphate was carried out in a laboratory Taylor–Couette reactor (TC) and continuous flow mixing tank (MT) with a paddle stirrer. Shear rates in the range of 20–350 s−1 were used. Methods of image and fractal analyses were used to ...
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Case Study: Source Water Monitoring Improves WTP Process Control
With over 200 installations across Ireland, Real Tech in partnership with Glan Agua, are helping to improve process control and drinking water quality. Simple and affordable real-time UV254 organics analyzers from Real Tech are enabling plants to rapidly detect organic fluctuations in raw water and take action to ensure effective removal is achieved. Background UV254 provides one of the best ...
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Experimental evaluations of water treatment systems using a pilot-scale plant for adaptations to a sharp increase in raw-water turbidity caused by climate change
One effect of climate change on the water supply systems in Japan may be a sharp increase in the raw-water turbidity following heavy rain. The objective of this study was to evaluate water treatment performance with a sharp increase in raw-water turbidity. This evaluation was carried out from the perspective of turbidity response by a pilot-scale plant using sand filtration and membrane ...
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