Case Study

Odor and Denitrification Solved

Major Mushroom Processor Turns To Aequion For Support

When the California State Water Resources Control Board (CSWRCB) sought to administer stricter regulatory standards on an industry-leading mushroom processor, a challenge was presented: pay millions for the integration of wastewater treatment systems (which address only part of the problem), assume the consequences of noncompliance, or simply attempt to bide time. Neighboring-residents’ open disdain of various sites’ natural odors only hastened the need for a solution. This is where Aequion was invited to conduct a series of trials between March and September of 2018.

The first stage targeted odor caused by the highly-anaerobic conditions of recycled water used in composting and irrigation as well as the release of methane and other greenhouse gases. Three trials were run and closely monitored on-site using a Model 06 EMOH™ and a 250,000-gallon storage tank. The results proved remarkable.

The second stage addressed denitrification (nitrates, a biproduct of the ammonia-conversion process, are unwelcome by the CSWRCB in irrigation and discharge). By way of a Model 03 EMOH™ unit and specialized microbes, the Aequion team successfully delivered a targeted prescription for the problem – with no composting interference. The data taken speaks for itself.


  • Highly-anaerobic water supply
  • Odor caused by the release of methane and other greenhouse gases
  • Excess nitrates, chlorides, and sulfates
  • Lack of water storage and discharge
  • Noncompliance and neighboring communities’ complaints

Mushrooms contributed an estimated $38.13 B in revenue to the to the global economy in 2017 and the industry is projected to experience a CAGR of 7.9% through 2026. The only issue here is supply and compliancy, making modern farm practices essential and advancing the need for superior wastewater solutions.


  • Model 03 EMOH™
  • Model 06 EMOH™
  • Specialized Microbes


  • Converted 250,000-gallons of water from anaerobic to aerobic in ~3 weeks
  • Increased Dissolved Oxygen (DO) from 0.002 mg/L to 12.305 mg/L
  • Eliminated all measurable quantities of ammonia and methane
  • Complete reduction of chlorides, nitrates, and sulfates
  • Significant decrease in total dissolved and suspended solids
  • Provided a tried and proven prescription for denitrification


Bloetscher, F., Meeroff, D.E., Roblyer, J. and Prymas, A. (2018) Algal Control in Warm Weather Pond Using EMOH Device. Journal of Environmental Protection, 9, 882-894.

Lakner, J. (2015) Safe Discharge of Landfill Leachate to the Environment. Thesis,Florida Atlantic University, Boca Raton.

Ltd, R. (2018). Global Mushroom Market Size, Market Share, Application Analysis, Regional Outlook, Growth Trends, Key Players, Competitive Strategies and Forecasts, 2018 To 2026. Retrieved from

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