Expected to contribute to global water sustainability
Mitsubishi Electric Corporation announced today that it will conduct a field test of its Ozone Backwashing Energy-Saving Membrane Bioreactor (Eco-MBR) for the recycling of sewage and industrial wastewater with low energy consumption at the Public Utilities Board’s (PUB), Singapore’s national water agency, Changi Water Reclamation Plant (CWRP). The field test is expected to verify that the Eco-MBR, when compared to conventional MBRs, both potentially reduces energy consumption and dramatically increases the quantity of permeated water per membrane filter surface area (flux), thanks to a filter-cleaning process using ozonated water. Mitsubishi Electric is now developing practical applications for sewage, industrial water treatment and recycling systems, which are expected to contribute to global efforts to achieve sustainable water environments.
Building on the technological expertise of more than 1700 delivered ozone generators, Mitsubishi Electric has been developing its high-performance Eco-MBR as a solution for areas around the world that are experiencing increased demand for water. Due to limited water resources in Singapore, the government and industry are successfully applying water-reuse solutions to provide alternative, sustainable supplies of water, especially for industrial use. Currently, Singapore’s supply of potable recycled water (known as NEWater) is sufficient to meet 30 percent of the nation’s water needs. The pilot-scale study will be carried out in cooperation with the PUB and the Centre for Water Research at the National University Singapore until December 2016. Commercialization of the Eco-MBR is scheduled by the year 2018.
Tests so far have shown that the Eco-MBR is able to achieve a high-quantity flux, or quantity of permeated water per membrane surface area, that is more than twice the rate of conventional MBRs*. The key is regularly backwashing the membranes with highly concentrated ozonated water to remove virtually all organic foulants, thereby increasing membrane permeability. In addition, the Eco-MBR lowers energy consumption by using a reduced flow rate for air bubbles that are emitted from a blower to clean the membrane surfaces.
For your short term ozone detection needs we now offer the C16 PortaSens Handheld ozone monitor for rent. We offer this monitor with the 0-2 ppm sensor or the higher range 0-20 ppm sensor. For special situations the ppb range sensor is also available.
Ozone use for water main disinfection is possible, but has not caught on large scale here in the USA quite yet. Article below is a great example of an ozone trial that could grow the use of ozone use for water main disinfection in Australia, and hopefully more the world.
Reducing chlorine and chemical use worldwide is imperative for water quality and energy savings long term.
Unitywater first in Queensland to trial ozone water main disinfection
Unitywater is the first water utility in Queensland to trial ozone disinfection technology in water pipelines. Ozone disinfection sterilises water quickly and breaks down rapidly into harmless oxygen. The technique involves using ozone gas to inactivate bacteria and disinfect water mains. The ozone is pumped from a portable trailer unit, which can be placed on site where needed. Acting Executive Manager Infrastructure Services Division Michael O’Toole said Unitywater was partnering with Grenof Water Technologies to conduct the trial. “To ensure public health is protected, water utilities are required to disinfect new water mains before putting them into service,” Mr O’Toole said. “Traditionally Unitywater has used a process of chlorination to conduct this important disinfection. “Ozone is another option for us to consider as it is cost-effective, reliable, environmentally friendly and easy to use. “It also has the added benefit of sterilising mains quickly, thereby reducing delays for the development industry whenever new water main connections are required. “We are looking forward to the results of the trial.” Unitywater’s laboratory services staff will be testing water samples as part of the trial, while the ozone trailer itself also monitors water quality to ensure drinking water standards are met.