mixing matters blog

Industrial Mixing topics from your mixing experts

Mixing matters blog - Covering any topic involving industrial mixers and utility mixers

Mixing in water treatment
Industrial Mixing

Mixing 101: Low rpm, High Torque Mixing

Mixing 101: Low rpm, High Torque Mixing In the process industry, there’s a strong focus on power as the defining characteristic in mixing. Many considerations are often left by the wayside when choosing a mixer. These factors can make or break the application. Relying solely on the G-Value or velocity gradient in mixer design leaves important information out of the equation. Focusing on the G-Value gives rise to the misconception that horsepower, rather than torque, is the critical factor determining mixing effectiveness. This method is effective for applications requiring high-sheer and turbulent flow, but this isn’t always the case. High-speed mixing introduces a host of additional considerations based on fluid viscosity, flow patterns, and shearing. Mixing Categories Different types of

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Mixer Configuration Application
Mixer Configuration

Mixing 101: Optimal Mixer Design

4 FACTORS FOR OPTIMAL CONFIGURATION Getting the right mixer for the job involves so much more than simply purchasing a standard unit off-the-shelf. There is an art to configuring a mixer that will optimize the results of an application. Selecting a mixer based solely on horsepower or RPM requirements can produce less than optimal results, and even damage your product through excessive shear. As we discussed in an earlier post, we first need to understand the 4 Factors for Configuring a Mixer, which are: Tank Type & Volume Fluid Viscosity Specific Gravity Environment & Process Once a Dynamix Sales Engineer understands these factors in relation to your application needs, we are ready to configure a mixer that will both maximize your investment

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Wine Factory Tanks
Mixing 101

Mixing 101: Optimal Tank Design

UNDERSTANDING HOW TANK DESIGN AFFECTS MIXING Apart from the actual mixer, the design of the mixing tank is the single most important factor in producing a successful result in any process. In order to allow optimal performance from a mixer’s impeller, it is essential to create an environment that supports both correct impeller positioning and appropriate liquid coverage of the impeller. Incorrect positioning negatively affects the performance of a mixer, the quality of a product, and may even be detrimental to the performance life of the mixer drive. When looking at tank designs, vertical cylindrical, and square or rectangular tanks are most common. In the process of selecting the optimal tank design for an application there are certain rules of

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Nitrifying Bacteria
Mixer Configuration

Optimizing an Anoxic Mixer for Denitrification

Optimizing an Anoxic Mixer for Denitrification in Water Treatment Simply adding bacteria to a wastewater plant does not guarantee that they will achieve the targeted task of denitrification. To encourage their growth, it is essential to first establish an anoxic environment, and then introduce an anoxic mixer that has been optimized specifically for the process. The Denitrification Process Denitrification in wastewater treatment is the conversion of nitrate (N03) to nitrogen gas (N2). It is a process that involves the reduction of nitrogen present in waste streams to an acceptable level so the treated water can be discharged into the environment via streams, ponds, lakes, etc. Lowering nitrate levels in a waste stream is achieved through creating an anoxic environment in which heterotrophic

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pH testing
Water Treatment

Neutralization Mixing for pH Control

Neutralization Mixing for pH Control Wastewater Treatment Neutralization Neutralization, also known as pH control, is the process of adjusting or maintaining a desired pH level in the wastewater. Generally, neutralization involves the introduction of chemicals to bring water to a neutral pH of 7.0: Acids with a pH less than 7.0 are used to lower the pH of a tank of basic liquid Bases or caustics with a pH higher than 7.0 are used to raise the pH of a tank of acidic liquid The objective of neutralization is to bring effluent wastewater to a neutral pH of 7.0, meaning neither acid nor base, making it suitable for discharge. The acceptable pH level of the discharge varies by location and

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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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