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Mixing in water treatment
Mixer Configuration

Agitator Design for Wastewater Clarification – Part 1

Clarification on Coagulation Clarification of water using coagulating agents has been practiced since ancient times. The use of alum as a coagulant dates back to the Romans around 77 AD, and by 1757, England was using alum for coagulation in municipal water treatment. This clarification process remains essential in various water treatment disciplines today. In the modern water treatment plant, the use of coagulants to treat wastewater are better understood, which has led to significant optimization of process equipment and chemistry. Coagulation and flocculation are two common unit processes that are designed to remove very small particulate matter by forcing them to clump or stick together so that they will settle out and be removed from the wastewater as “sludge”.

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March 21, 2016 No Comments
Polymer Activation
Dynamix Products

Optimizing Polymer Mixing in Water and Wastewater Treatment

Optimizing Polymer Mixing in Water and Wastewater Treatment A major concern in water and wastewater treatment processes is identifying the most effective and efficient way to remove solid particles and other materials found in the liquid stream. The most effective method of eliminating unwanted contaminants is through the use of polymers in a sludge-creating process. Polymers are used to coagulate suspended solids and produce large curds of solid materials (floc) which are more easily removed from the water treatment stream. Polymers are available in a variety of forms and concentrations and are supplied as either dry powders or concentrated liquids.  Each variation presents unique challenges when sizing mixers. Dry Polymers: Polymers supplied in powder form must be wetted out which

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March 13, 2014 3 Comments
Wastewater Mixers in Water Treatment
Mixer Configuration

Selecting Wastewater Mixers for Wastewater Treatment – Part 1

Selecting Wastewater Mixers for Wastewater Treatment – Part 1 Wastewater Mixers for Optimal Chemical Preparation Chemical preparation in wastewater and water treatment directly impacts many downstream processes. Let’s take a look at several common chemicals used and some key factors that influence their preparation and the selection of wastewater mixers. Lime Slurry Preparation When preparing lime slurries for controlling pH, uniformity is critical. Why? Because lime solids must reach/stay in suspension if they are to serve their purpose in downstream processes. For this reason, it’s essential that wastewater and water treatment facilities have lime slurry mixers that can efficiently and effectively make up/maintain uniform slurries. In order to successfully suspend/re-suspend solids, a mixer needs to create a flow pattern that involves the entire

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December 2, 2013 4 Comments
Dynaflow High Efficiency Impeller Flow Pattern
Mixer Configuration

Selecting A Waste Water Mixer for Wastewater Treatment – Part 2

Selecting A Waste Water Mixer for Wastewater Treatment – Part 2 Waste Water Mixers for Optimal Flash Mixing & Flocculation In part 1 of this series on wastewater and water treatment mixers, we discussed how to select a waste water mixer for chemical preparation. In this post, we’ll show you how to select a Waste Water Mixer for flash mixing and flocculation. Done in a Flash? Aggressive Agitation + Speed for Flash Mixing Flash mixing is used to evenly distribute coagulating chemicals in water, allowing micro-flocs to form. As the precursor to flocculation, flash mixing increases the efficiency of flocculation and reduces chemical wastage. Because the components need to be quickly and evenly dispersed, this process is all about brute

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December 2, 2013 12 Comments
Polymer Activation
Industrial Mixing

Mixing 101: 4 Factors for Configuring Your Fluid Mixer

Mixing 101: 4 Factors for Configuring Your Fluid Mixer Considering Mixer Configuration If you’re in an industry that includes fluid mixing in its processes, you probably know that finding the right fluid mixer for your needs is critical to maintaining quality control, reducing costs, and optimizing efficiency. The key here is to engineer a fluid mixer that addresses the specific needs of your process. When configuring a mixer for your process, your mixing engineer should consider the following 4 factors: Factor #1 – Tank Type & Volume This determines the amount of fluid your tank can hold. This is important because it will determine the size and position of the fluid mixer and its mounting. Factor #2 – Viscosity This

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November 15, 2013 No Comments
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