Click here for more information about Algenuity
Click here for more information about Liqofluxphenometrics515R1
Visit cricatalyst.com!Evodos Separation Technology

Technology

Can multiple effect evaporators be replaced with algal technology?

May 1, 2016 — by Dr. V Sivasubramanian
AlgaeIndustryMagazine.com

Slope tank for reverse osmosis reject treatment showing algal growth

Slope tank for reverse osmosis reject treatment showing algal growth

Amultiple-effect evaporator (MEE) is a system designed for efficiently using the heat from steam to evaporate water. This equipment is recommended by pollution control agencies to evaporate industrial effluents and R/O (reverse osmosis) rejects with very high total dissolved solids (TDS) and it results in huge amounts of hazardous solid waste.

In India MEE is extensively used in R/O reject management of textile and leather industries. The major problems with MEE are the costs of installation and operation and finally management of solid waste generated due to evaporation.

Because of these reasons industries have been looking for alternate technology to handle R/O rejects. Phycospectrum Environmental Research Centre (PERC), in India, has recently developed and successfully demonstrated microalgae-based technology at Brintons Carpets Asia pvt ltd, India, very successfully.

Comparison of multiple-effect evaporator (MEE) & Algae Technology (Based on 100 M3/day plant)

Comparison of multiple-effect evaporator (MEE) & Algae Technology (Based on 100 M3/day plant)

The R/O reject from Brintons has a TDS of 20,000 to 25,000 mg/L and this was continuously loaded into a 10 KL demonstration plant in which selected microalgae were also grown. The effluent with algae was allowed to run on a slope, for capturing sunlight and heat, and to evaporate faster. After a short initial salt buildup the system stabilized with no further increase in TDS, and further addition did not increase TDS. Algal biomass produced was collected on regular basis from the slope roof that is being analyzed for possible utilization.

The system at Brintons Carpets is now stabilized, and has started producing almost 0.75 g of dry algal biomass per liter per day; and water is getting evaporated resulting in zero sludge. This system is currently being scaled up.

This successful implementation has proved the efficiency of an algae-based evaporation system in replacing MEE for handling high TDS waste streams like R/O rejects of various industries, and more specifically textile and leather industries.

—Dr. V Sivasubramanian is Director of the Phycospectrum Environmental Research Centre (PERC), Chennai, India.

More Like This…

HOME A.I.M. Archives

Copyright ©2010-2018 AlgaeIndustryMagazine.com. All rights reserved. Permission required to reprint this article in its entirety. Must include copyright statement and live hyperlinks. Contact editorial@algaeindustrymagazine.com. A.I.M. accepts unsolicited manuscripts for consideration, and takes no responsibility for the validity of claims made in submitted editorial.

twittertopbarlinks_eventstopbarlinks_requesttopbarlinks_archives

From The A.I.M. Archives

— Refresh Page for More Choices
If we built a Green Friendship Bridge composed of 8,600 algae microfarms given to Mexican and Central American farmers in lieu of 1%, (13 miles) of additional border wall...
Since hydrogen fuel cells produce electricity, we are increasingly thinking about hydrogen as a successor to crude oil. But where will the hydrogen come from? Its ecologi...
Researchers at Iowa State University, in Ames, Iowa, are developing technology, using algae, that improves the efficiency of wastewater reclamation. The system uses verti...
A Quebec-based company that specializes in the manufacturing and commercialization of marine and seaweed-based products for agriculture and horticulture constructed a new...
PhysOrg reports that recent efforts have been made by researchers in Japan to reduce the cost of biodiesel production by using pulsed electric fields (PEF) to extract hyd...
Diane Stopyra writes in Salon.com that a growing number of coastal states around the country are undertaking large-scale seaweed farming projects. While farms are underwa...
Qualitas Health, an algae-based health and nutrition company headquartered in Texas, has announced a long term, strategic partnership with commercial crop producer Green ...
Algatech has announced the opening of Algatech Inc., a New York City-based subsidiary created to serve the North American market. The company has appointed Ken Seguine to...
David Erickson writes in the (Montana) Missoulian that Clearas Water Recovery, a Missoula tech company formed eight years ago, has developed a patented process to use alg...
Washington State University researchers have developed a biofilm reactor to grow algae more efficiently, and make the algae more viable for several industries, including ...
The European Synchrotron Radiation Facility (ESRF) reports that an international team has discovered an enzyme which allows microalgae to convert some of their fatty acid...
Jeff Gelsky writes in Meat+Poultry that Corbion executives have given insights on how its September 29 acquisition of TerraVia Holdings Inc., an algae-based ingredients c...