flocculant tank Articles

  • Dow Stade - Case Study

    Energy and space saving solution for TSS removal at chemical company DOW Stade is a chemical company in the north of Germany. Multiple ASTRASEPARATOR® units combined with upstream flocculation tanks pre-treat surface water for the production of process water. The implementation of ASTRASEPARATOR® introduces a compact settling stage instead of a ...


    By Paques Technology B.V.

  • Alexandroupolis Water - Case Study

    Three of our products used to treat water in Alexandroupolis In 2004, plans were drawn up for a new water purification plant in the Greek port city of Alexandroupoli. The challenge was to produce drinking water by treating surface water from reservoirs. We used several of our water treatment products to fulfil this task and the water purification plant was completed four years ...


    By Nordic Water Products AB

  • Water treatment case study

    Wastewater is any water that has suffered in quality by human intervention. Often, wastewater is being treated for re-use as drinking water or for other purposes. As high levels of nutrition are available in these waters, algae may grow rapidly as well as other micro-organisms such as bacteria. Algae can compete for nutrients against the bacteria in charge of sludge reduction and can also clog ...


    By LG Sonic

  • Application of recycled sludge to stabilize coagulation process

    In conventional treatment of variable quality mountain water, an inability to immediately adjust the coagulant dose to variations in water quality causes overdose or underdose of coagulant in relation to its optimal value. The results of the research showed that the reuse of post-coagulation sludge was an effective method to maintain high and stable coagulation effectiveness under both ...


    By IWA Publishing

  • How to do a filter press pilot test at plant?

    Sometimes, when we work with difficult sludge or when we are unsure of the degree of dryness that we will obtain during sludge dehydration using a filter press, it is helpful to perform a test to confirm the expected performance (the dryness of the cake). Due to the high loads discharged by the factory, there are high levels of sludge production in the biological treatment at the plant. In order ...


    By Toro Equipment S.L.

  • Monitoring and Treatment of Selected Nanoparticles

    With their increasing use, nanoparticles will become concentrated in urban effluents in the future. Both adequate monitoring methods and water treatment technologies will be necessary to assess and avoid consumer exposure. This paper reports results in these two challenging areas for both organic and inorganic nanoparticles. Treatment experiments indicate that lamellar settling is better adapted ...


    By IWA Publishing

  • 50 GPM Parallel Plate Clarifier for raw water treatment at a chemical manufacturing plant

    Challenge A chemical manufacturing company needed to clarify surface water that was being drawn from a local creek for use as a cooling agent in their manufacturing process. The existing system was 30-years old, corroded, and not very adept at handling solids after separation from the water. Space requirements were a limiting factor in the installation. ...

  • Largest power plant in philippines uses membrane desalination for purified WA

    The Facility Ilijan Plant, developed by KEILCO-KEPCO Ilijan Corporation, is located in the Island of Luzon, about 100 miles south of Manila, Philippines. It is a combined cycle power plant and at 1,200 MW generating capacity, is the largest power plant in the Philippines. The plant consists of two power blocks, which share a common membrane based Seawater Desalination system for ...

  • Cost effective boiler makeup system using membrane desalination for power plant in dominican republic

    The Facility Andres Power Plant, developed by Caribbean Thermal Electric LLC, is located in Boca Chica, near Santo Domingo, Dominican Republic. It is a 300 MW gas fired combined cycle power plant and is one of the largest IPP power plants in the Dominican Republic and will supply electricity to Corporacion Dominicana de Electricidad. The plant consists of two power blocks, which ...

  • Development of a flocculation sub-model for a 3-D CFD model based on rectangular settling tanks

    To assess performance and evaluate alternatives to improve the efficiency of rectangular Gould II type final settling tanks (FSTs), New York City Department of Environmental Protection and City College of NY developed a 3D computer model depicting the actual structural configuration of the tanks and the current and proposed hydraulic and solids loading rates. Fluent 6.3.26™ was the base platform ...


    By IWA Publishing

  • Huber screenings and Sludge treatment equipment in Northern Ireland - Case study

    Almost a year ago we started up our screenings and sludge treatment equipment that we had supplied to Northern Ireland. Our equipment is installed in the newly constructed North Coast wastewater treatment plant of Northern Ireland Water at Craigtownmore. Our contract included supply, installation and start-up of our systems for screenings handling, for mechanical sludge thickening and sludge ...


    By Hydroflux Pty Ltd

  • Algae and Biofilm control project for a drinking water treatment plant in Cyprus

    For the Ministry of Agriculture in Cyprus, LG Sound b.v installed 33 LG Sonic, ultrasonic devices in the Limassol water treatment plant, to prevent bad odour and taste to the water caused by geosmins in the water. The earthy taste problem persisted during summer of 2010 and various physical, chemical and biological tests were done in order to check the process efficiency, which ...


    By LG Sonic

  • Tertiary treatment for wastewater reuse based on the Daphnia magna filtration – comparison with conventional tertiary treatments

    Tertiary treatments are required to permit safe reuse of wastewater. The performance of a new biological tertiary treatment based on the filtration by a population of Daphnia magna was studied and compared with the performance of other conventional tertiary treatments such as coagulation-flocculation, settling tank, disc filtration, sand filtering and ultraviolet (UV) light. The ...


    By IWA Publishing

  • Algae control in drinking water treatment - case study

    For the Ministry of Agriculture in Cyprus, LG Sound b.v installed 33 LG Sonic, ultrasonic devices in the Limassol water treatment plant, to prevent bad odour and taste to the water caused by geosmins in the water. The earthy taste problem persisted during summer of 2010 and various physical, chemical and biological tests were done in order to check the process efficiency, which showed problems ...


    By LG Sonic

  • Wastewater Pre-Treatment for the food industry (vinegar and dressings)

    Description of the plant Highly polluted wastewater arises from the production of high-quality vinegar, delicatessen and mustard products. Most of the COD load here is formed by lipophil substances which have to be decreased before to municipal sewer net. Peaks of load and flow are buffered in a mixing and balancing reactor to achieve an homogenised flow to the ...

  • Optimum Design of Your Center Well: Use of a CFD Model to Understand the Balance Between Flocculation and Improved Hydrodynamics

    The use of center wells (CWs) in circular secondary settling tanks (SST) has become a common practice. According to Parker et al. (1996) the main purpose of the CW is to promote the aggregation of remaining dispersed particles into settleable flocs, i.e., to promote the flocculation process inside the settling tank. Parker et al. (1996) and Parker and Stenquist (1986) showed strong evidence that, ...

  • Removal of micropollutants with coarse-ground activated carbon for enhanced separation with hydrocyclone classifiers

    One key technology to eliminate organic micropollutants (OMP) from wastewater effluent is adsorption using powdered activated carbon (PAC). To avoid a discharge of highly loaded PAC particles into natural water bodies a separation stage has to be implemented. Commonly large settling tanks and flocculation filters with the application of coagulants and flocculation aids are used. In this study, ...


    By IWA Publishing

  • Oil Field Sludge Dewatering

    An oil field contract dewatering company was unable to dewater the oily/water/solids from several oil field storage tanks using conventional coagulants/flocculants. The swings in solids loading and oil content made it very difficult to control the correct dosage rate as conventional chemistry has a very tight tolerance to maintain a dewaterable floc. The result was an ongoing blinding problem for ...


    By Integrated Engineers Inc.

  • Determination of conventional velocity gradient (G) using CFD technique for a pilot-scale flocculation system

    Achieving uniform mixing conditions are essential for the flocculation process to optimize floc size and avoid floc-breakup. Limited literature is available on establishing consistent operational conditions and procedures for pilot-scale flocculation systems, which have tank sizes smaller than full-scale and larger than jar-test equipment. In this study, the influence of mixing speeds on the ...


    By IWA Publishing

  • Operation of a solids contact tank at low dissolved oxygen and low total suspended solids concentrations

    Solids retention time (SRT) and dissolved oxygen concentration (DO) set points were optimized at a 32 MGD trickling filter-solids contact tank system. OPTImasterTM on-line optimization software was used for set points selection. Set points were maintained automatically using SRTmaster and DOmaster - sludge age and dissolved oxygen automatic control systems. Referenced above biological system was ...

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