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Does your water treatment system include organics removal to prevent chlorine byproducts?

Written by Marketing on . Posted in water treatment tips

Does your water treatment system include organics removal to prevent chlorine byproducts?

“We’re not seeing all engineering consultants providing new water system designs that address organics before disinfection systems, such as chlorination and UV, and I’m concerned about it,” says BI Pure Water’s Engineering Manager, Paul Anderson. “Frankly I wouldn’t drink the water if the THMs were over 25 ppb.”

chlorine byproducts formationChlorine byproducts such as THMs (all are called TTHMs), and haloacetic acids (HAA) are formed when chlorine interacts with naturally occuring organic matter in the source water. “There are serious negative health effects with long term exposure to these disinfection byproducts. The City of Vancouver is concerned enough to lower their THMs to 25 ppb. The EPA has lowered the Stage 1 Disinfectants and Disinfection Byproducts Rule to regulate total trihalomethanes (TTHM) at a maximum allowable annual average level of 80 parts per billion (µg/L) from 100 ppb.”

“The water quality of communities, which they should have published on their websites, should indicate THMs well below the max, and we’re not seeing that. The public must demand good water treatment.”

Some UVs may even increase the problem of disinfection byproducts by breaking organic material into smaller particles with more surface area that results in even higher THMs.

BI Pure water’s senior engineer, George Thorpe, who watches the EPA studies, notes that research underway is showing that there are many more disinfection byproducts than are currently known, and long term studies on human health are underway.

MBRs allow water reuse of sewage treatment

Written by Marketing on . Posted in News, ultrafiltration

MBRs allow water reuse of sewage treatment

Advanced Waste Systems brochure Advanced Wastewater Treatments explained
Brochure download (4pps,Zip PDF)

Subdivisions continue to multiply. Developers routinely contact us for proposals for communities that are ‘outside the water treatment grid’ and are sourcing water and wastewater treatment systems. Water can be expensive to bring to these communities and they are keen to reuse water wherever possible.




With a membrane bioreactor communities are able to both treat sewage and recover bacteria and pathogen free water for their fire stations, as well as irrigation. This can mean big environmental and promotional benefits for developers, not to mention cost savings!

At BI Pure Water we would like to see communities using MBR because it can be a completely closed loop system. Dewatered sludge can be spread on fields, recovering nitrogen and phosphorus, or mixed into compost. The MBR requires a little more skilled maintenance than a MBBR or SBR system because it requires – two or three times a year typically – a chemical clean of membranes. Also the membranes need to be monitored for breaks or fouling, though these symptoms would be monitored through the computer control system.

A budgetary price proposed for this typical subdivision is under $200,000 for the first 100 dwellings. MBR is modular so in Phase II and III of the development another MBR would be added later to defer capital costs.

MBRs are built and tested complete inside a container or steel framed building. This can save on construction costs and are hassle-free by being built and tested in the factory and shipped complete and ready for implementation in the community. The plants are by nature steel frame structures that are resistant to extreme weather events, as well as mold, wildlife and rodents.

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New AOP - Biperliminate addresses the toughest pollutants in the environment, pilot experiment https://t.co/HoiW4QQOUd via @YouTube

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