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Industrial Mixing topics from your mixing experts

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

Mixer Configuration

Agitator Design for Wastewater Clarification – Part 2

Clarification on Flocculation In our previous article, Agitator Design for Wastewater Clarification Part 1, we looked at how to optimize a mixer for the unit process of coagulation. In wastewater treatment, coagulation is normally followed by flocculation. While coagulation is used to destabilize and agglomerate suspended waste particles, flocculation brings the colloids out of suspension in the form of floc, and allows the particles to be more readily removed from the water stream. In this article, we will examine the process of flocculation, the flocculator mixer, and how mixer parameters change to achieve the desired result. Flocculation Following the coagulation of destabilized microscopic particles in wastewater, the process of flocculation encourages the newly formed micro-floc to stick together, making even larger clumps

April 7, 2016 No Comments

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”.

March 21, 2016 No Comments

Mixer Configuration

Flash Mixing with a Rapid Mixer

Flash Mixing in Water Treatment The water treatment process truly begins with a very brief turn in a flash mixing chamber. After screening out debris and testing raw water, chemicals that encourage coagulation are added to the water stream. The mixture is agitated quickly and thoroughly in a process called flash mixing. The chemicals introduced into the water stream will attract any very fine particles, such as silt, that will not readily settle or filter out and make them clump together. These larger, heavier formations are called floc, which are much easier to remove from the water. Flocculation Preparation In the case of the flocculation process, the rapid mixer is specifically designed to disperse polymers so they enhance flocculation by optimizing

December 28, 2015 No Comments

Water Treatment

6 Cool Mobile Apps for Water & Wastewater Professionals

In a world where phones are getting smarter every day, it makes sense to put them to work wherever we can. Our devices are with us 24/7, and with the right apps they can be customized to take over many regular job tasks while on the go. These days there are apps designed to assist in every conceivable function, and the water and wastewater treatment industry is no exception. Smartphones can unchain you from your desk, and eliminate the need to run back to the office every time you need to check measurements or perform calculations. Mobile apps are often free, but even when they aren’t, the value they provide is usually well worth the investment. You can’t put a

March 10, 2015 No Comments

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

December 11, 2014 4 Comments

Mixing Principles in Play

Fontus Bottle Turns Air Into Water

Fresh Water On-the-Go Avid cyclists may never run out of water again, especially if Kristof Retezár is along for the ride! Mr. Retezár, an industrial design student at the University of Applied Arts in Vienna, is a finalist for the 2014 James Dyson Award. His award nominated design for the ‘Fontus’ is a self-filling bottle that literally makes water out of thin air. Appropriately named after the Roman god of wells and springs, the Fontus prototype collects and condenses moisture from the air while a bicycle is in motion. It then fills up a water bottle attached to the bike frame. Noted on the James Dyson Award website, Mr. Retezár says that the Fontus is ‘Useful on long bike tours,

December 10, 2014 No Comments

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mixing matters blog

Industrial Mixing topics from your mixing experts