EnviroMix will provide its technology to mix two repurposed dissolved air floatation tanks that have each been subdivided into a waste activated sludge (WAS) and thickened WAS storage tanks. A variable-speed, rotary-screw compressor supplies compressed air to valve control panels that fire bursts of large bubbles through the BioMix™ engineered floor nozzles. Challenges overcome by the BioMix design include the sloped floors of the WAS tanks, the narrow geometry and bottom hoppers of the thickened WAS tanks, and the inaccessibility of all related tanks. The self-cleaning nozzles and stainless steel piping eliminate in-tank maintenance of the energy-efficient mixing system.

Mike Caso of Technology Sales Associates, EnviroMix sales representative, states, “The original design intent was to utilize coarse bubble aeration. Due to the unique configuration of the existing tanks, high solids content and complete mixing requirement, the BioMix system proved to be a lower installed cost system that would ensure complete mixing throughout these sludge blending and storage basins. The BioMix design mixes from the basin floor; whereas, a coarse bubble system would have a dead zone of at least six inches where the stored sludge would sit septic. As energy usage is always a consideration in equipment selection, the lower O&M for the BioMix system will save money.”

The BioMix system is expected to be operational by September 2012. EnviroMix is pleased to provide the Narragansett Bay Commission with engineered, energy-efficient mixing solutions as part of their advanced wastewater treatment processes at the Bucklin Point WWTF.

About EnviroMix

Headquartered in Charleston, SC, EnviroMix is a privately held corporation, which designs and manufactures treatment systems to dramatically reduce energy costs and help facilities meet nutrient removal limits. Utilizing patented and proprietary technology, the Company provides both equipment and process control solutions to enhance plant performance in the water and wastewater markets. For additional information please visit www.enviro-mix.com.

Come visit us at the 2012 South Carolina Environmental Conference on March 11-13 in Myrtle Beach. We will be exhibiting with Atlantic Process Sales at booth #23 & #30.

Also, Randy Boyette, Senior Process Control Manager at Renewable Water Resources, will be presenting his paper, “Large Bubble vs. Mechanical Mixing at the Mauldin Road WWTP,” during Session M-1, Wastewater Treatment. Randy will describe the installation, testing, and successful performance of anoxic mixing utilizing the BioMix™ compressed gas mixing system.

To find out how to register for the conference, please visit the association’s website highlighted above or contact EnviroMix directly at 843-573-7510.

We look forward to seeing soon!

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At the FCGA WWTP, the existing circular “package” wastewater treatment tanks will be repurposed as pre-equalization, surge, and digester tanks. Located in the outer ring of the old tankage, the separate pre-equalization and surge tanks will provide diurnal and storm flow equalization, respectively. A new digester, providing additional capacity for the new biological treatment process, will be contained in the inner tank of the old package plant. EnviroMix will provide coarse bubble aeration for all three compartments as well as its BioMix compressed gas mixing system for the pre-equalization tank. The new BioMix system is expected to be utilized exclusively for the pre-equalization tank due to its lack of oxygen transfer, needed to retain carbon in the wastewater for subsequent advanced nutrient removal biological processes.

Tammie Myers, Senior Civil Engineer for Century Engineering, states, “The mixing requirements of the toroidal pre-equalization tank, the lack of oxygen transfer of the BioMix system, and the multi-tank system responsibility afforded by EnviroMix made their technology the proper choice. The BioMix system also provides the necessary compressed air for the biological treatment process valves.”

The EnviroMix systems are expected to be operational by June, 2012. Stuart Humphries, EnviroMix Director of Sales, states, “This is an excellent example of our engineered mixing and aeration system, further demonstrating our capabilities in the wastewater market.”

About EnviroMix

Headquartered in Charleston, SC, EnviroMix is a privately held corporation, which designs and manufactures treatment systems to lower energy costs and help facilities meet nutrient removal limits. Utilizing patented and proprietary technology, the Company provides both equipment and process control solutions to enhance plant performance in the water and wastewater markets. For additional information please visit www.enviro-mix.com.

A live demonstration of our compressed gas mixing and process control technology will be performed at the Charleston (SC) Water System’s Plum Island WWTP on Thursday, August 25th from 2:00 to 4:00 pm. EnviroMix will be showcasing its BioCycle™ and BioMix™ systems at the Water Environment Association of South Carolina Low Country District gathering.  

At this facility, the BioMix system is installed in complete-mix biological reactors with fine bubble aeration and both are controlled using the BioCycle process control system. The graph to the right presents process data identifying dissolved oxygen (DO) in blue, nitrate (NO3-N) in red, and oxidative reduction potential (ORP) in yellow. A sequential, or cyclic, aeration process is utilized to minimize blower operation and power while still producing effluent quality within permit limits. During the aeration phase, DO is controlled at approximately 2 mg/L. When the aeration is terminated and the BioMix compressed gas mixing system is turned on, nitrates are reduced to approximately 1 mg/L NO3-N. Multiple process variables (DO, ORP, NO3-N, and ammonium) are monitored continuously to determine aeration and mixing period lengths. Using this innovative process, energy reduction has far exceeded expectations.  

Please contact me or Sean Clifford at 843-573-7510 to confirm your attendance. Professional development hours will be provided.  

We look forward to seeing you at the Plum Island WWTP, 539 Harbor View Circle, Charleston, SC 29412.  

The F. Wayne Hill WRC receives sludge from another Gwinnett County treatment facility, pumped via force main into the facility influent. This new solids loading requires additional storage capacity prior to thickening, digestion and dewatering. An existing circular chemical thickener will be modified by building an interior sloped-floor tank for primary sludge storage, with the outer ring to hold waste activated sludge. These tank geometries present challenges for technologies other than BioMx, the EnviroMix compressed gas mixing system. Rings of floor-mounted nozzles will intermittently release bursts of compressed air to mix the tanks. No aerobic treatment of the sludge is desired prior to thickening and anaerobic digestion. Because each volume fired is so large, but has relatively low surface area, BioMx transfers an insignificant amount of oxygen into the sludge and provides well-mixed, anoxic/anaerobic conditions. Further, energy consumption using BioMx is estimated at only 43% as compared to mechanical mixers, using just one BioMx compressor in lieu of five mechanical mixers. 
 
Robert Kazmier of Kazmier & Associates, Inc., EnviroMix sales representative, states, “The unique geometries of these tanks coupled with the County’s desire to reduce maintenance made BioMx to be the common-sense mixing solution. The energy reduction already proven by BioMx systems in the facility’s anaerobic biological treatment reactors provided awareness of this mixing technology during technology selection.”
 
The BioMx system is expected to be operational by December, 2011.  EnviroMix is pleased to provide Gwinnett County engineered, energy-efficient mixing solutions as part of their advanced wastewater treatment processes at the F. Wayne Hill WRC.
 
About EnviroMix
 
Headquartered in Charleston, SC, EnviroMix is a privately held corporation, which designs and manufactures treatment systems to lower energy costs and help facilities meet nutrient removal limits.  Utilizing patented and proprietary technology, the Company provides both equipment and process control solutions to enhance plant performance in the water and wastewater markets.  For additional information please visit www.enviro-mix.com.

California Water Environment Association
April 12-16
Ontario, CA
Come visit EnviroMix at JBI Water & Wastewater’s block

Arkansas Water Environment Association
May 1-4
Hot Springs, AR
Come visit EnviroMix at Instrument & Supply’s block and see our presentation, “WWTP Analysis: Large Bubble Mixing vs. Propeller Mixing,” on May 3rd, Room C201, 3:30pm.

New Jersey Water Environment Association
May 10-12
Atlantic City, NJ
Come visit EnviroMix at G.P. Jager & Associates’ block.

Georgia Rural Water Association
May 14-17
Jekyll Island, GA
Come visit EnviroMix at the Kazmier & Associates booth and see our presentation, “Energy-Efficient, Maintenance-Friendly Large Bubble Mixing,” on May 16th, Wastewater Session, 2:00 pm.

Central States Water Environment Association
May 16-19
Brooklyn Park, MN
Come visit EnviroMix at Drydon Equipment’s block

To find out how to register for each conference, please visit each associations website highlighted in blue or contact EnviroMix directly.

The potable water upgrade project will provide a steady, centralized supply of water from the utility’s ten Middendorf aquifer wells. As part of the project, a two million gallon ground storage tank will be constructed. The EnviroMix AquaBlend™ system will provide the necessary tank mixing by firing programmed short bursts of highly-filtered compressed air through engineered, floor-mounted nozzles. The softball-sized bubbles mix from the tank bottom to the water surface, creating a distinctive mixing pattern, or “tank roll.” The blending parameters of the AquaBlend™ controller may be varied for optimum mixing and power utilization.  Tank mixing provides a homogenous level of disinfectant and prevents issues created by thermal stratification resulting from stagnant tank water.

The design consultant for Kellahan & Associates Engineers, Myron Kellahan P.E., recognizes the fact that “the system components needing maintenance are out of the tank, eliminating the need to take the tank out of service and having to perform laborious tank disinfection prior to placing the tank back into service.” 

EnviroMix is pleased to provide Alligator Rural Water & Sewer economical operational and maintenance benefits for the water supply in Chesterfield County, SC.

About EnviroMix  

Headquartered in Charleston, SC, EnviroMix is a privately held corporation, which designs and manufactures treatment systems to lower energy costs and help facilities meet nutrient removal limits.  Operating under patented and proprietary technology, the Company provides both equipment and process control solutions to enhance plant performance in the water and wastewater markets.  For additional information please visit www.enviro-mix.com.

A Professional Engineer, Boyd has a BS degree in Civil Engineering and a MS degree in Civil Engineering with a focus in Applied Fluid Mechanics, both from Clemson University.

About EnviroMix LLC

Headquartered in Charleston, SC, EnviroMix is a privately held corporation, which designs and manufactures treatment systems to lower energy costs and help facilities meet nutrient removal limits.  Operating under patented and proprietary technology, the Company provides both equipment and process control solutions to enhance plant performance in the water and wastewater markets.  For additional information please visit www.enviro-mix.com