Improve cold-weather ammonia removal in treatment lagoons

DATE POSTED: September 24, 2018

In the winter months, many treatment lagoons struggle to meet regulatory requirements for ammonia since the microbes that provide nitrification slow down, and even die off, in cold conditions. Rather than building a costly mechanical plant, treatment facilities can quickly retrofit their lagoons with a BioCord™ Reactor system to significantly improve treatment performance and meet regulatory requirements for a fraction of the cost.

Recently, a BioCord Reactor pilot project helped a small town in Ohio improve cold weather nitrification in its wastewater treatment lagoons. The system was installed in September 2017 and monitored until the pilot project was completed in June 2018. During the pilot project, the ammonia concentrations in the influent ranged from 20 mg/L to 40 mg/L. Bishop Water designed this pilot system for a much smaller loading rate, since there was little to no initial data before the project began. Even with this limitation, the BioCord Reactor system was able to consistently reduce ammonia to below 5 mg/L. The project ran throughout the winter, seeing wastewater temperatures as low as 1˚C.

cold weather ammonia removal

Another BioCord Reactor pilot project in a small town in southern Alberta began in the spring of 2018. Most systems start treatment in the summer so that the warm water will encourage growth of the nitrifying bacteria. In this instance, the wastewater system was struggling to achieve sufficient nitrification in the spring and needed to start looking at options early.

April and May in Alberta saw many days and nights where air temperatures dropped below 0˚C. Even with these low air temperatures, the system still experienced improvements in ammonia removal and effluent quality. The BioCord Reactor was able to consistently remove ammonia levels from as high as 50 mg/L in the influent to below 10 mg/L, and often to 0 mg/L.

How it works

The BioCord Reactors allow superior cold-weather ammonia removal. This is due to the open-frame design that ensures good circulation. Densely looped polymer fibres, which hang on the modular frames, provide a massive surface area. This surface provides aerobic and anaerobic microorganisms plenty of room to grow. In turn, this growing bacteria helps treatment lagoons maintain regulatory compliance for ammonia in cold weather conditions.

The BioCord Reactors also incorporate fine-bubble tubing. This high pressure aeration inhibits clogging that can occur in other air diffusers due to sludge and debris build-up. The powerful aeration underneath the frames also keeps water moving around them. This inhibits ice from forming over and around the frames.

Learn more about Bishop BioCord Reactors.

Read about  Bishop Water’s cold weather ammonia removal pilot project in Ohio.

Contact us to discuss improving your lagoon’s cold-weather performance with BioCord Reactors.

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High strength ammonia treatment with BioCord Reactors

DATE POSTED: June 25, 2018

Research study and pilot testing aim to validate BioCord™ Reactor system for high strength ammonia treatment

A new research study aims to validate the ability of the BioCord™ Reactor system to effectively remove ammonia in high strength wastewater applications. A key requirement of this project is to ensure that BioCord Reactors can sufficiently reduce high strength ammonia concentrations and consequently reduce or eliminate hefty sewer surcharges levied on industrial producers of these waste streams.

In April 2017, Bishop Water Technologies started working on a research project with Queen’s University and Dr. Steven Liss (currently Vice-President of Research and Innovation at Ryerson University). The project team is testing a BioCord Reactor system for its ability to treat waste streams with ammonia concentrations as high as 1,000 mg/L.

“Lab testing at Queen’s University is showing that the BioCord Reactor system is responding quickly and effectively to treat high strength ammonia, even when the influent concentrations are variable,” says Kevin Bossy, CEO of Bishop Water Technologies. “Based on what we’ve seen so far, we are confident that future pilot testing will show similar results.”

high strength ammonia test

Undertake a no-risk BioCord pilot study to remove ammonia at your site

If your site continually faces municipal sewer surcharges for discharging high strength ammonia, a BioCord Reactor pilot system can quickly demonstrate a simple, low-energy pre-treatment process along with rapid ROI.

Following an assessment, a team from Bishop Water Technologies can bring a compact, fully assembled BioCord Reactor pilot system to your site and can usually install it within one day. The pilot system is fully equipped with all electrical connections needed. This allows for “plug-and-play” to an electrical supply provided by the client. In addition, all piping is included such as feed and discharge lines for wastewater and treated effluent.

The Bishop Water team will provide comprehensive installation and commissioning services for the duration of the pilot project in addition to conducting regular sampling, monitoring and maintenance of the system. Within four to eight weeks, the system can provide sufficient operational data to demonstrate its pre-treatment capabilities and help you potentially reduce or eliminate sewer surcharges.

Contact us to learn more about the pilot project and to inquire about participating in the study.

Learn more about BioCord Reactors for ammonia removal.

Attend our presentation on the feasibility of fixed-film technology to treat high strength ammonia synthetic wastewater at the ecoSTP Conference in London, Ontario on June 27, 2018.

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