MR
Cornell University
Fungal bioaugmentation and ventilation raise nitrate removal in woodchip beds.
Sponsored researchIn-development
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Updated Nov 2, 2026
Biological water treatment covers using living systems to take nutrients out of water. On Halo, the solutions cover nitrogen removed biologically from stormwater, bioreactors and engineered organisms, and wetlands built into existing infrastructure. Sign up to search the full network and post your specific need.
Nitrogen removed biologically from stormwater
MR
FM
Adsorptive soil amendments and hydraulic controls run nitrification then denitrification.
Sponsored researchEarly-stage
Margit Olle
NPO Veggies Cultivation · Startup
Effective microorganisms adapted to nitrogen and phosphorus in urban runoff.
Sponsored researchEarly-stage
Sarina Ergas
University of South Florida
Biochar in bioretention, with pollutant and hydraulic residence times separated.
Co-developmentEarly-stage
KG
Northwestern University
Wetland biogeochemistry at urban scale, taking nutrients, metals and carbon.
Sponsored researchEarly-stage
Bioreactors and engineered organisms
SB
MicroBio Engineering Inc. · Supplier
Grows microalgae on dairy, digester and municipal wastewater in raceways or photobioreactors, turning the nutrients into protein.
Pilot/trialIn-development
Tinia Pina
A modular bioreactor concentrating nitrogen and phosphorus for reuse.
Sponsored researchIn-development
DE
Bacteria scavenged from a sulphate-rich site, then engineered to reduce TDS.
Gift/awardEarly-stage
Katy Roodenko
Max-IR Labs, LLC · Supplier
An infrared sensor reading nitrate and ammonia as the process runs.
Sponsored researchIn-development
Wetlands built into existing infrastructure
Xavier álvarez
Universidad de las Fuerzas Armadas · University
Constructed wetlands with microbial fuel cells, on undiluted pig farm waste.
In-development
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Who is working on biological water treatment
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Biological water treatment expertsAbout biological water treatment
Nitrogen in urban stormwater is what most of the work on Halo addresses, through denitrifying biofilters, soil amendments, microbial consortia and wetland biogeochemistry. A second, smaller group builds a bioreactor or engineers the organism directly for one contaminant. On Halo it spans three groups: nitrogen removed biologically from stormwater, bioreactors and engineered organisms, and wetlands built into existing infrastructure.
Stage of development. Work on biological water treatment on Halo comes mostly from university programs. 47% of the solutions are in market. Pilot engagements and co-development are the usual partnering routes, and about 63% of the solutions that state terms offer licensing.
Three trends in biological water treatment solutions on Halo
Nitrogen, and the carbon it needs. Five entries remove nitrogen from stormwater and each one solves the same underlying constraint: denitrifying bacteria need bioavailable carbon. One adds fungal bioaugmentation to woodchips, one adds biochar, one adds adsorptive soil amendments with hydraulic controls to sequence nitrification and denitrification. The biology is settled; feeding it is the engineering.
Retrofit, not replacement. Two entries are explicitly built into infrastructure that already exists, using locally sourced substrates and stress-tolerant plants in urban drainage, and constructed wetlands paired with microbial fuel cells on a rural pig farm. Biological treatment needs space and time, and both are found by fitting into something already there.
Knowing what the biology is doing. Biological treatment is slow to read, and two entries are built around that. An infrared sensor reads nitrate and ammonia while the process runs, and a modular bioreactor concentrates nitrogen and phosphorus so the output can be reused where it would otherwise be discharged. Both treat the measurement as part of the process.
138organizations
136solutions listed
64%from university labs
47%in market
Frequently asked questions
What are biological water treatment solutions?
Biological water treatment covers using living systems to take nutrients out of water. It spans denitrifying biofilters and soil amendments for urban stormwater, engineered wetlands retrofitted into existing infrastructure, bioreactors and engineered organisms built for a specific contaminant, and the sensors that tell an operator what the biology is doing. Municipalities, utilities and industrial operators are the buyers.
What are examples of biological water treatment solutions?
Three examples of biological water treatment solutions on Halo include:
What are the latest biological water treatment innovations?
The most recently updated biological water treatment solutions on Halo include:
Which companies and suppliers are developing biological water treatment solutions?
There are 138 organizations with biological water treatment solutions on Halo, 29 of them universities and research institutions. Among them are Cornell University, Drexel University, and NPO Veggies Cultivation. Most offer pilot engagements or co-development. Sign up to see every organization working in the area and to send them your specific need.
How do I find biological water treatment research partners?
Browsing biological water treatment solutions on Halo is free. Sign up to search the full network and save the ones you want. Post your specific need to get exact matches. Organizations reply directly on the platform.
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