Tag: Wastewater Reuse
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Ozone improves ceramic membrane use for wastewater reclamation
Ceramic membranes have been used in the industrial production of beer, wine and cheese. One of the reasons for this use is the narrow pore size distribution, where careful separation of different size compounds can be achieved. Outside of Japan, the use of ceramic membranes has been almost non-existent for municipal drinking-water systems. The slow…
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Antiscalant removes need for acid in wastewater RO
Field trials of a new scale-inhibiting chemical for use with reverse-osmosis membranes in wastewater reuse plants show that, at a low dose rate, it can increase the solubility of calcium phosphate by over one hundred times, obviating the need for using dangerous and costly acid. Current design practices for large effluent reuse projects are focused…
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Large Diameter RO Desalination Elements
In recent years, increasing the diameter of spiral elements has been studied as a method of lowering the cost of membrane treatment. It has been shown that the installed cost of a reverse osmosis (RO) plant can be reduced by up to 27% using larger diameter elements.Large diameter elements provide savings in footprint and building…
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Combining Forward Osmosis with Reverse Osmosis
A combination of forward osmosis with reverse osmosis could facilitate the treatment of some high fouling wastewaters. The system uses brine to draw water from the wastewater without high pressure or turbulence. Key element is the membrane’s ability to allow rapid passage of water without much internal concentration polarization. The diluted draw solution can then…
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MBR upgrades mean less maintenance and longer life
In recent years, MBR membranes have evolved to the point where they require less maintenance and at the same time have a longer useful life. An added benefit comes from the more advanced designs that consume significantly less energy and lower operating costs. The new Puron module from Koch Membrane Systems Inc (KMS) is a…
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Boost for San Angelo water reuse plan
Plans for a water reuse project in San Angelo, Texas, received a boost this week, with local council staff given the green light to take the next step in seeking funding for the project.
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Scientists reveal public health risks with desalination
Scientists in Israel have, in separate studies, unveiled two potential public health hazards associated with consumption of treated reclaimed or desalinated water according to a report in the Times of Israel.
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PWT tie up heralds Saudi market push
H2O Innovation is forecasting a drive into the Saudi Arabian desalination chemicals market following its recent deal with provider of specialty chemicals for water and wastewater treatment plants, Chemsbro, whose main customers include the Water and Electricity Ministry of Saudi Arabia, National Water Company, and the Saudi Industrial Property Authority.
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Californians back water recycling
Californians are eager for long-term solutions to the state’s drought and are overwhelmingly supportive of using treated wastewater, or recycled water, in their everyday lives, according to a statewide survey by water technology firm, Xylem.
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US reuse to get US$ 23 million government injection
The US Bureau of Reclamation has unveiled plans this year to invest in water reuse and efficiency upgrades to the tune of US$ 23 million.