flotation tank Articles
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Two- and three-phase simulations of an ill-functioning dissolved-air flotation tank
Computational Fluid Dynamics (CFD) simulations were employed to examine the performance of a large-scale Dissolved-Air Flotation (DAF) tank. The tank was ill-functioning as it was operated with bubbles larger than designed for. Different multiphase models, turbulence models and boundary conditions for the free surface of the tank were tested in 2D simulations. The simulation results were assessed ...
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Simple protocols for assessing dissolved air flotation systems: quantification of released air, bubble density and cloud patterns
Dissolved air flotation (DAF) systems are useful for many water treatment applications. Optimizing a DAF system can be very difficult and complicated due to a multitude of variables that contribute to effective separation. Pressure, temperature, retention time and air mixing affect the ability of the saturator to increase air solubility, while baffle heights, flow rates and recycle ratios ...
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Estimation and evaluation of auto-flocculated algae harvesting efficiency using the population balance in turbulence model in flotation process
Algae are considered water pollutants because they form algal blooms in stagnant water. Algae harvesting technology, however, can help convert them into a useful industrial material like biomass. The core technique (flocculation) separates microalgae from other flocculants, allowing for the harvest of clean and pure algal biomass. This study aims to estimate and evaluate algal separation ...
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Three dimensional Eulerian-Eulerian simulation on hydrodynamics in dissolved air flotation tank with different turbulence models
The Eulerian-Eulerian approach is used to simulate the two phase flow of air and water in a dissolved air flotation (DAF) tank. Unsteady simulation is adopted to obtain the quasi-steady result. The two dimensional model cannot capture the three dimensional feature of flow pattern in the tank. The three dimensional model reproduces the stratification structure observed in the experiment and ...
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Two-phase simulations of an off-nominally operating dissolved-air flotation tank
The flow patterns of the contaminated water and the air bubbles inside a large-scale Dissolved Air Flotation (DAF) tank were examined using CFD modelling. The DAF tank was operating off-nominally in the sense that it was supplied with bubbles larger than originally designed for. Attention was drawn to the location for air injection and the effect of having more than one-size bubbles in the tank, ...
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Shillelagh sewage treatment works
Address: Shillelagh, Co. Wicklow Client: Wicklow County Council Engineer/Client Contact Details: Sean O'Neill S.E.E, Environment & Sanitary Section, Wicklow Co. Co., County Buildings, Wicklow. Ph: 0404 20100 Completion Date: September 2001 Population Equivalent: 8,00 P.E. Value: € 140,000 + Vat BMS Design Details: BMS designed, supplied, installed & commissioned 2 no. BMS BL 4000 ...
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Evaluation of flow hydrodynamics in a pilot-scale dissolved air flotation tank: a comparison between CFD and experimental measurements
Computational fluid dynamics (CFD) models of dissolved air flotation (DAF) have shown formation of stratified flow (back and forth horizontal flow layers at the top of the separation zone) and its impact on improved DAF efficiency. However, there has been a lack of experimental validation of CFD predictions, especially in the presence of solid particles. In this work, for the first time, both ...
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Evaluation of flow hydrodynamics in a pilot-scale dissolved air flotation tank: a comparison between CFD and experimental measurements
Computational fluid dynamics (CFD) models of dissolved air flotation (DAF) have shown formation of stratified flow (back and forth horizontal flow layers at the top of the separation zone) and its impact on improved DAF efficiency. However, there has been a lack of experimental validation of CFD predictions, especially in the presence of solid particles. In this work, for the first time, both ...
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Industrial Sao Paulo, Brazil case study
Project Name: Dairy Location: Sao Paulo, Brazil Type of Plant: Industrial Consultant: Acqua Engenharia Technology Used: CMFF (MBBR) Biomedia Used: BWT35 media Operational Since: August 2010 The Challenge The customer is a producer of dairy products including: Milk, cheese, sour cream, butter and yogurt. In Sao Paulo City as in many large cities, the industries have to pay to discharge to the ...
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Brazilian Dairy with Space Constraints
Case Study of a Brazilian Dairy - Space Constraints The Challenge: The customer is a producer of dairy products including: milk, cheese, sour cream, butter and yogurt. In Sao Paulo City as in many large cities, the industries have to pay to discharge to the municipal wastewater system. The dairy was no exception. The immediate challenges they were facing were scaling issues and the lack of ...
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Dairy Installation
The customer is a producer of dairy products including: milk, cheese, sour cream, butter and yogurt. In Sao Paulo City as in many large cities, the industries have to pay to discharge to the municipal wastewater system. This dairy was no exception. The immediate challenges they were facing were scaling issues and the lack of space to expand their treatment plant. By choosing the ...
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Smelling of Roses: Treatment of Wastewater From Aroma Production
Whether in food and drink, cosmetic products, cleaning products or perfumes - consumers encounter International Flavors & Fragrances (IFF) products everywhere. The company, with its headquarters in New York, is one of the world's leading producers of fragrances and fla-vounngs for industrial clients. IFF uses may different basic substances in the production of their products, for example ...
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Toro Equipment in programme “Hecho en Castilla y León” of channel CyL7
Last October the 29 th, Toro Equipment appeared as an innovative company in waste water treatment sector in the programme “Hecho en Castilla y León” of the regional television channel “CyL7”. This programme shows every week the most innovatives products made in Castilla y León(Spain). Here you can see the report to Mr. Santiago Salcedo, Toro Equipment CEO, ...
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Cheese Processing - Case Study
Boasting an extensive array of Italian cheeses perfected in Italy and brought to the United States over 3 decades ago, this state-of-the-art facility culminates tradition and innovation. Intrinsic to their old world traditions is the concept that their Community is as important to them as the customers who savor their delicacies. Challenge With great success came expansion. Working closely with ...
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Paper Mill Retrofit - Case Study
Introduction Clean Water Technology, Inc., the creator of the Gas Energy Mixing (GEM) System, the most advanced primary treatment system on the market. The GEM System provides superior reduction of total suspended solids (TSS), biological and chemical oxygen demand (BOD/COD), fats, oils and grease (FOG) and turbidity. Challenge A prominent paper mill company in Colombia was faced with their ...
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Watson-Marlow peristaltic pumps in breakthrough application - Case Study
South West Water is using a peristaltic pump from Watson-Marlow Fluid Technology Group for dosing coagulant into raw reservoir water for purification purposes. It is thought to be the first time peristaltic technology has been used on a coagulant application, certainly within the southwest region. Originally the plant, near Falmouth in Cornwall , employed two conventional diaphragm pumps, ...
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Wastewater-Primary Treatment
Primary Treatment is defined as a wastewater treatment process that takes place in a rectangular or circular tank and allows those substances in wastewater that readily settle or float to be separated from the water being treated. This process achieves solids separation. The solids readily available to settle to achieve sedimentation will do so in a settling tank referred as a clarifier. On the ...
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DAF Retrofitting with GEM LSGM Technology - Case Study
Introduction Clean Water Technology, Inc. (CWT) is the creator of the Gas Energy Mixing (GEM) System - the most advanced primary treatment system on the market. As an alternative to replacing existing Dissolved Air Flotation (DAF), CWT introduces “DAF RETROFITS” utilizing innovative GEM Technology to provide superior reduction of total suspended solids (TSS), biological and chemical ...
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Waste Management Solutions for Business
How to win the race for everyone Waste Management Solutions for Business Industry will always lead the way in the adaptation of new technology, and especially the technology of conservation. This is not necessarily for any ideological reason, but because the people who manage water use better understand the economic incentives for adopting new technology. Current technology of wastewater ...
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What is Wastewater?
What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, oil, paper ...
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