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How to extend the Life of Your Lagoons for Many Years to Come at a Fraction of the Cost?

KEVIVA is a provider of BIODOMES, submerged bio-reactors used to enhance the biological activity of treatment systems in order to reduce ammonia, BOD and TSS concentrations. Our goal is to help communities comply with state and federal environmental regulations without resorting to expensive mechanical plants. Whether yours is an existing system, or new construction, Bio-Domes can help minimize the expense of your treatment system.

Bacteria that exists naturally in most bodies of water is capable of achieving some degree of nitrification and denitrification. Unfortunately, suspended growth bacteria is not effective enough for wastewater treatment in the face of the ever increasing regulations imposed on treatment facilities. Large mechanical plants are able to achieve effective nitrification and denitrification in expensive processes such as MBBR’s. Until recently, smaller treatment facilities that rely on lagoons haven’t had an effective alternative for improving the nitrification and denitrification in their ponds. The bio-film that grows in the Bio-Domes creates a robust colony of bacteria capable of achieving treatment levels that are comparable to some mechanical systems.

Below are a few examples of the Bio-Dome performance in removing ammonia and reducing total nitrogen concentrations. More information is available upon request.


Nitrification & Denitrification Results

while the air is on, the ammonia is consumed and turned into nitrate. As soon as the air is cycled off, the nitrate is converted into nitrogen gas and the concentration decreases. Bio-domes are capable of performing effective nitrification & denitrification.


About Bio-Domes

They sit on the floor of a lagoon and are completely submerged. The Bio‐Domes enhance the naturally occurring biology by providing 2800 square feet of surface area per unit, a gas delivery mechanism capable of providing air or more specific gasses as necessary, an environment protected from UV light, and significant mixing action to ensure nutrient availability to the biology as it grows.

When used in a wastewater lagoon, the enhanced biology is capable of accelerating the nitrification of ammonium and the subsequent denitrification of nitrates and nitrites. Additionally, the gas delivery/aeration design helps reduce BOD levels. As organic material is consumed by the bacteria, overall TSS levels are reduced. The airlift action created within the Bio‐Domes is the mechanism behind the mixing action and helps delay the buildup of sludge on the bottom of the lagoon.


Features & Benefits

We Guarantee Our Systems Will Work

 Lowest Operation & Maintenance Cost Option in the Industry

 Approved & Successfully Operating at Over 30 Sites in 20 States (USA)

 Lowest Power Consumption in the Industry

 The Only Proven Water Treatment Capable of Operating Off-Grid

 Removes Ammonia, BOD, TSS, and Total Nitrogen

 Works Well in Cold Weather


Without sufficient biological activity present to consume the dissolved compounds in a wastewater lagoon, it is very easy for the discharged water to become non-compliant. We understand the importance of biological activity in reducing the levels of contaminants that can harm our waterways.

To significantly enhance the biological activity in a wastewater lagoon, there are two core needs: aeration and lots of surface area for biofilm development. Our Bio-Domes simply and effectively introduce the needed air and the requisite surface area into existing water bodies without exorbitant capital costs. Additionally, the unique design of the Bio-Domes results in a high Oxygen Transfer Efficiency (OTE) with a minimum of energy input. Our systems typically require one-third the amount of energy as most aeration systems for the same performance.



As effluent requirements have become more stringent over the years, many communities have had to upgrade their facultative lagoons to aerated lagoons. The increased oxygen, and to some extent the improved mixing, has helped keep communities in compliance for many years. Unfortunately, most aeration systems are incredibly inefficient and require large motors to be effective. This results in high utility bills, and over the life of the system, can increase the cost of the system by a factor of 5-10 times the original cost. Because of its unique design and high OTE, each Bio-Dome requires 1 CFM of air at 5 psi under typical conditions and is able to achieve the same performance as typical aeration systems for a fraction of the cost. Bio-Domes are also easy to install and maintain, making wastewater aeration simple to achieve and cost-effective to maintain.



Biofilm is crucial in establishing robust biological activity in a wastewater lagoon.  Suspended growth bacteria are not always able to develop in sufficient quantities in a typical wastewater lagoon, nor are they capable of surviving in cold weather environments. Biofilm allows a variety of beneficial bacteria to develop in higher concentrations than is possible in suspended growth, however, biofilm growth is limited though by the amount of available surface area in the lagoon.  To overcome this problem, the patented design of Bio-Domes creates an additional 2800 square feet of surface area inside each unit.  This increase in surface area correlates directly to increased biological activity once the biofilm has had a chance to develop. The results of the increased biological activity speak for themselves! (ask for the technical papers);


Biological Wastewater Treatment

Coupling the increase in surface area with aeration and a dark environment that discourages algal competition, Bio-Domes have the perfect environment for enhanced biological activity. The patented design of the Bio-Domes is a cost effective means of reducing unwanted contaminants in wastewater treatment systems. Not only are our systems effective at reducing BOD, Ammonia, and Total Nitrogen levels, but because the bacteria require a carbon source for food, we often see tremendous reductions in TSS levels as well.

KEVIVA has a pilot plant available for testing, please send us an inquire regarding you necessity and process information.



+ 1 801 766 0625
Head Office and Manufacturing Plant
3333 W 1500 N, Lehi UT 84043 – USA

+55 41 3019-3545
Branch office and Manufacturing Plant
Rua Augusto Zibarth 393
85560-360 Curitiba PR – Brasil

(Português do Brasil)