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JMS - Model Eco-Air -Low Profile Cascade Aerator
In simpler days, most wastewater treatment facilities were not required to meet dissolved oxygen (DO) limits as criteria for discharge. Today, regulations imposed by federal and state agencies typically specify a minimum DO concentration of 6 milligrams per liter (MG/L), depending on the receiving stream requirements. Many wastewater treatment facilities have been forced to add post-aeration to achieve compliance. All aeration methods are designed to increase the DO level in the effluent by creating a greater amount of contact between air and water to enhance the transfer of oxygen. Traditional cascade aerators utilize great heights to allow the water to fall steeply from step to step into splash zones, with significant elevation changes needed to accommodate this process.
In the 1990’s engineers wisely developed a concept for utilizing the power of nature along with a unique low profile design to achieve required DO levels. Hence, what became the JMS Eco-AIR (Low Profile Cascade Aerator) was developed. Since then, JMS designers have taken it a step further with the new patented Eco-AIR (Low Profile Cascade Aerator). Based on the same principles, the new Eco-AIR (Low Profile Cascade Aerator) has added advanced design concepts to provide exceptional performance throughout the full range of daily effluent flow.
Process Advantages
- Capable of up to 6 MG/L increase in DO concentration for the full range of daily flow
- Ideal for new or existing facilities
- Low profile design can be configured for use in any outfall, only 2.5 feet of head loss needed
Environmentally Sound
- No electrical power requirement
- Powered by gravity and its patented unique design
- Small footprint
Cost Savings
- No operational costs
- Low installation cost
- Reduced maintenance costs
Maintenance Advantages
- Stainless steel construction, with 30+ year life
- No moving parts, so little to no maintenance required
- Easy installation
Air Infusion Plates and Leaping Weirs
The core component of the JMS Eco-AIR (Low Profile Cascade Aerator) is the leaping weir assembly. This stationary assembly allows for optimal velocity and pressure changes. Patented air infusion plates maximize the air to water mixture increasing effluent DO levels.
Influent Control Gate
The JMS Eco-AIR (Low Profile Cascade Aerator) uses patented Influent Control Gates. The Influent Control Gate is designed for optimal perfomance for low or peak flow rates. Each individual channel width is optimized for plant’s full range of flow.
Minimum Flow Control Gate
The JMS Eco-AIR (Low Profile Cascade Aerator) design includes a Minimum Flow Control Gate to allow control for variable influent flow rates.
Unlike prior cascade designs, where water falls steeply from step to step requiring great depth for installation, the Eco-AIR (Low Profile Cascade Aerator) utilizes optimum slopes of less than 5.5 degrees. Each channel is fitted with a series of patented trapezoidal air infusion plates with leaping weirs, staged to create velocity and pressure changes throughout the length of the channel.
Influent flow control gates are trapezoidal in shape and serve as flow control weirs as well as submerged orifices when flows demand. The first stage channel is designed for the minimum hydraulic flow rate of the treatment facility being served, and individual channel widths are optimized for job specific application flow rates. This special design insures even channel flow for all channels at low or peak influent flow rates.
The high-tech, precision design of the patented Eco-AIR (Low Profile Cascade Aerator) system enables it to do what no other post-aeration system has ever been able to do. Its ecologically-friendly day-to-day operation is so incredibly simple that it requires no external power of any kind and virtually no maintenance whatsoever. The unit is compact, self-contained, and designed for minimal installation expense.
The patented Eco-AIR (Low Profile Cascade Aerator) comes as a palletized, pre-assembled (to the furthest extent possible) insert for installation in a basin or channel, or a packaged unit with serpentine design that can be applied to meet DO requirements in low flow situations. Each JMS design offers customers a cost effective way to meet federal regulations for both existing and new treatment systems. The new patented Eco-AIR (Low Profile Cascade Aerator) takes the next step in revolutionizing the post aeration marketplace.
