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water treatment plant
Industrial Mixing

Waste Activated Sludge Mixing Principles

Why Is Sludge Blending Important? For many industrial wastewater treatment facilities, sludge accounts for as much as 30-40% of capital costs and about 50% of the operating costs due to the complex nature of processes involved to curb by-product waste. The sludge or “bio solids” left over can be refined into nitrate based fertilizers/ compost, chemical bio-fuels or other natural resources. Sludge biosolids can also be further dewatered for post processing and disposal purposes and because of the many products that can be economically produced; the sludge process is a true bio-refinery. Many water treatment plants focus on improved quality within their operations of sludge handling and mixing equipment selection. Sludge viscosities have an influence on e.g. pumping, hydrodynamics, mass transfer

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April 10, 2018 No Comments
Mixing Image
Dynamix Products

Key Factors to Lime Slurry Usage in Water Treatment Processes

LIME SLURRY USAGE FOR WATER TREATMENT PROCESSES   FACTORS TO CONSIDER   What is Lime? Not to be confused with the lime you find in your local produce store, Lime is a commonly used chemical for wastewater treatment and can be slaked when water is added and turned into slurry. The use of lime in its various forms has been steadily on the rise. Today lime is the most important chemical used throughout the world for pollution control. It is, therefore, imperative that handling and processing lime be well understood by all those who use this chemical. The Lime used in the water treatment industry is referred to as either quicklime (CaO) or hydrated lime (Ca(OH)², which is hydrated in

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August 1, 2017 No 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
tank design baffles and no baffles
Industrial Mixing

Mixing 101: Baffled by Baffles?

Mixing 101: Baffled by Baffles? How Baffle Configuration Can Optimize Industrial Mixing In our previous posting on configuring your mixer, we learned that the tank type and volume, viscosity, specific gravity and the process are key factors the mixing process. In this article, we dive into how baffle configuration and mixer mounting can prevent the undesirable flow pattern of swirling. Let’s look at a common tank configuration: an un-baffled cylindrical tank. If a mixer is center-mounted in this tank, what we see is a very inefficient flow pattern: the tangential velocities coming from the impeller cause the entire fluid mass to spin (Fig. 1).  Basically, the entire fluid (and its solids) moves like a merry-go-round. In solid suspension applications, the solid

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October 19, 2012 6 Comments
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