WASTEWATER AERATION & BLOWERS WHITE PAPERS AND CASE STUDIES

Optimizing Chemical Dosing Reduces Chemical Use While Meeting Effluent TP Limits
Optimizing Chemical Dosing Reduces Chemical Use While Meeting Effluent TP Limits

The city of Black River Falls in Wisconsin used chemical treatment with ferric chloride (FeCl3) to achieve their effluent total phosphorus (TP) permit of 1.0 mg/l. Historically, the chemical dosing rate was manually adjusted on a daily basis based on the measured effluent TP concentration. The plant was upgraded with an OSCAR process performance optimizer control system with phosphorus controller, which uses continuous measurement of orthophosphate. Read the full case study to learn more.

  • Packaged Wastewater Treatment For Uneven Terrain
    Packaged Wastewater Treatment For Uneven Terrain

    Storey County, NV, just southeast of Reno, needed to replace an outdated wastewater treatment plant that serves the historic communities of Virginia City and Gold Hill. The new site was on the side of a hill, presenting challenges for the design of the plant and the orientation of its processes. Also, the new plant area was entirely within a district on the National Register of Historic Places. Read the full case study to learn how the new modular design allows for an efficient wastewater treatment solution.

  • Blower System Integration For Wastewater Aeration Applications
    Blower System Integration For Wastewater Aeration Applications

    The overall wastewater treatment process is complex, and each step is integral to ensuring water is properly purified. Effluent ends up in the plants, containing substances that must be removed before the water can be properly cleaned and returned for use. The range of potential contaminants is almost endless, and can include food, pulp, waste, or other substances. Afterwards, the water requires further scrubbing, with the aid of bacteria. It is in this part of the process that compressed air (ideally provided by energy-efficient rotary lobe blowers) plays a vital role.

  • Use Of Pure Oxygen To Resolve Capacity And Odor Problems
    Use Of Pure Oxygen To Resolve Capacity And Odor Problems

    The Escalon Industrial Waste Water Treatment Facility’s service area is seasonal and centered on tomato and pickle processing. The production season (roughly mid-July through mid-October) sees high hydraulic- and BOD loads that strain the facility’s capacity. During the high season highly variable BOD load depletes DO and causes permit violations and odor complaints. Praxair installed 4 X 15 HP Medium Velocity Oxygenation (MVO™ oxygenation system), with the ability to deliver up to 6 TPD of oxygen to supplement the existing aeration capacity at the facility.

  • Affordable Wastewater Collection And Treatment
    Affordable Wastewater Collection And Treatment

    A modern, master-planned community in the Texas Hill Country needed an affordable wastewater collection and treatment system that could be installed in phases and would perform as reliably as a large municipal system but without the cost, odor, or need for a full-time operator.

  • Pure Oxygen Injection Into A Pipeline
    Pure Oxygen Injection Into A Pipeline

    The Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to UV.

  • Supplemental Aeration System Reduces High BOD Levels And Solves Odor Issues
    Supplemental Aeration System Reduces High BOD Levels And Solves Odor Issues

    A leading fruit juice company had expanded over the past ten years and increased wastewater flow from 7,000 to 11,000 gallons per day (gpd), without upgrading its wastewater treatment plant.

Post-treatment Aeration Maintains Dissolved Oxygen In Effluent High-Solids Wastewater Prior To River Discharge
Post-treatment Aeration Maintains Dissolved Oxygen In Effluent High-Solids Wastewater Prior To River Discharge

The LeSourdsville WWTP in Butler County, Ohio, was required to meet their NPDES permit requirement of 6 mg/l dissolved oxygen at the plants Miami River outfall.

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WASTEWATER AERATION PRODUCTS

Membrane Aerated Biofilm Reactors (MABR) Membrane Aerated Biofilm Reactors (MABR)

This revolutionary aerobic wastewater treatment solution is modular and reduces energy usage by up to 90% compared to conventional treatment.

OSCAR™ Process Performance Optimizer OSCAR™ Process Performance Optimizer

The benefits of an OSCAR system are clear. The OSCAR control system is a customizable, integrated system comprised of hardware, software, and services. Designed to be used with Sanitaire biological treatment solutions, OSCAR helps plants meet their performance requirements and operating budgets.

Stainless Steel Disk Aeration Module Stainless Steel Disk Aeration Module
Surgical die cut air releases in UV resistant tubing
Industrial Aerators Industrial Aerators
The Aspirator transfers oxygen from the water’s surface into the water column through a venturi tube, creating no surface spray.
Aqua-Jet® SS-PW Surface Aerator For THM Removal Aqua-Jet® SS-PW Surface Aerator For THM Removal

The Aqua-Jet® SS-PW surface mechanical aerator, manufactured by Aqua-Aerobic Systems is certified to NSF/ANSI 61 by UL for use in potable water applications. These units can be utilized for THM stripping applications or circulation in potable water treatment systems and reservoirs with a minimum volume of 100,000 gallons.

Replace Aging Brush Rotors With Envirex® Disc Aerators Replace Aging Brush Rotors With Envirex® Disc Aerators

Improved oxidation ditch mixing efficiency, lower energy use, and reduce maintenance with Envirex® Disc Aerators from Evoqua. Envirex disc aerators fit all existing single or multichannel oxidation ditch applications with little or no modification required.

Aeration Aeration

For the efficient, economical and reliable water treatment and wastewater purification you require high performance and reliable equipment for your plants.

Aeration; HiOx® Aeration Panel Aeration; HiOx® Aeration Panel
The newest generation of the Parkson HiOx® Aeration Panel provides a breakthrough in aeration technology, increasing aeration efficiency by 20% or more over commonly used fine bubble devices.
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WASTEWATER AERATION & BLOWERS PODCASTS

RWL Water Projects Run The Gamut RWL Water Projects Run The Gamut

Discussing the projects that RWL Water has been involved with in 2016, you understand just how variable the world of water treatment really is.

Three Largest Challenges With Wastewater Lagoons Three Largest Challenges With Wastewater Lagoons

When it comes to wastewater lagoons, there are three main challenges that operators run into. The first, similar to other parts of the nation’s wastewater treatment infrastructure, is age. The second is compliance with new EPA ammonia, nitrogen and phosphorus limits which many lagoon plants weren’t designed to deal with. And the third is expansion as communities grow and need additional capacity.

Enhanced Primary Treatment Reduces Energy By Separating BOD Before Aeration Enhanced Primary Treatment Reduces Energy By Separating BOD Before Aeration

At WEFTEC 2016, Evoqua Water Technologies explored six core challenges faced by wastewater treatment plants -- energy reduction, nutrient removal, odor and corrosion control, aging plant equipment, water reuse and disinfection. In this Water Online Radio interview, Paul Rice, Municipal Marketing Director with Evoqua Water Technologies, discusses energy reduction and nutrient removal in more detail.

Energy Efficiency Boosted By Replacing Controls Not Blowers Energy Efficiency Boosted By Replacing Controls Not Blowers

At the wastewater treatment facility, the biggest energy consumer is almost always the multistage aeration blowers. Replacing these blowers with high speed turbo blowers can save energy but the short-term cost to replace the existing blowers, reroute pipe and set new foundations can make the change a hard sell.

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WASTEWATER AERATION VIDEOS

GDT For Rapid Ozone Mass Transfer & Degassing GDT For Rapid Ozone Mass Transfer & Degassing

Mazzei’s GDT process delivers rapid and efficient ozone mass transfer under pressurized contacting conditions resulting in greater gas solubility.  Additional mixing and rapid gas bubble removal is provided by the system’s degas separator.  With high operational flexibility and low capital, installation and operating costs ― and all within a compact footprint ― the GDT mixing and contacting system is the best solution.

Basin Nozzle Manifold For Wastewater Aeration Basin Nozzle Manifold For Wastewater Aeration

Mazzei’s wastewater basin aeration system thoroughly agitates bulk water and mixes ambient air or pure O2 into the wastewater.  Utilizing in-house CFD modeling, Mazzei systems are designed to ensure efficient mixing and aeration. Unlike blowers, Mazzei aeration is virtually silent, and requires little to no maintenance.

Lagoon Wastewater Aeration Lagoon Wastewater Aeration

Mazzei’s lagoon aeration system is an efficient, low cost, quiet solution for wastewater problems. Optimally designed subsurface nozzles provide better mixing and agitating of wastewater than surface aerators.  Treatment efficiency increases as lagoon depth increases―no matter how deep―and the  system is easy to install and provides trouble-free operation. 

Big Air: Aerzen Introduces Turbo Blower For Large Treatment Plants Big Air: Aerzen Introduces Turbo Blower For Large Treatment Plants

Aerzen USA has long preached — and excelled in delivering — "right-sized" blower solutions, offering energy efficiency by producing the proper amount of air for the application. Until recently, however, the company did not have an option for the largest of wastewater treatment plants. That has changed with the introduction of the Multicore series turbo blower, which is described in the following video by Tom McCurdy, National Sales Manager for Aerzen's Environmental Group.

Sidestream Injection With PFR For Rapid Mass Transfer Sidestream Injection With PFR For Rapid Mass Transfer

Mazzei’s sidestream injection system with Pipeline Flash Reactor (PFR) uniformly distributes gas into a bulk water flow minimizing the size and cost of gas contacting.  Gas is drawn in and aggressively mixed with a sidestream flow via a venturi injector. The sidestream solution is then returned to the main flow through the optimally designed nozzles of a PFR to ensure complete and uniform contacting and rapid mass transfer ―all within a compact footprint. 

NURO Controller For ICEAS Advanced SBR Processes NURO Controller For ICEAS Advanced SBR Processes

These days, operators are required to do more with less due to stricter nitrogen and phosphorus permits, pressure to reduce energy and chemical usage, and limited time and staff. How could these challenges be met without a plant reconfiguration?

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ABOUT AERATION

 

A common first step in the secondary treatment process is to send wastewater to an aeration tank. In an aeration tank, bacterium is used to effectively break down pollutants into less harmful components. Wastewater aeration provides the appropriate oxygen level so that aerobic bacteria can thrive in degrading pollutants such as iron and manganese as part of the wastewater treatment process. Aeration can also be used to destroy anaerobic bacteria that perish in the presence of oxygen. Aerobes that can break down pollutants 10-100 times faster than anaerobes are used most frequently.

Aeration is also used to improve waste lagoons and other waterways such as lakes and reservoirs where oxygen deficiency contributes to taste, odor and pollutant problems. Equipment used for wastewater aeration includes low cascades, jet fountains, spray nozzles, blowers, submerged perforated pipe and porous plates or tubes. Whether the water is thrown into the air via a fountain or diffused by air bubbles being blown or drawn into the wastewater in an aeration tank, aeration works by increasing the area of contact between the oxygen in the air and water.

The most common wastewater aeration process in use today is the air diffusion process, where air is introduced from blowers through diffusion tubes suspended in a spiral flow tank, or in some cases, through diffuser plates in the bottom of the aeration tanks.