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Water Treatment

Bioelectrochemical system treats wastewater and generates biogas

The first full-scale installation of a unique bioelectrochemical wastewater-treatment system was recently started up at a California brewery. The system, known as the EcoVolt Reactor, was developed by Cambrian Innovation Inc. (Boston, Mass.; www.cambrianinnovation.com). EcoVolt Reactor is a microbial reactor…

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‘Switchable solvent’ technology is a promising development for advancing forward osmosis

Forward osmosis (FO), whereby a concentrated salt solution is used to “draw” water through a membrane from a less-concentrated salt solution (via osmotic pressure), has the advantage over reverse osmosis (RO) in that high pressures, with the associated pumps and…

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Turning wastewater treatment into resource recovery

In late September, GE Power & Water (Trevose, Pa.; www.gewater.com) introduced its new Membrane Aerated Biofilm Reactor (MABR) technology, tradenamed ZeeLung, at the Water Environment Federation Technical Exhibition and Conference (Weftec; Chicago, Ill., September 26–30; www.weftec.org). This technology is poised…

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Selective removal of micropollutants

Micropollutants, such as antibiotics and flame retardants, can pose a health threat to animals and humans, even in tiny concentrations. Current methods to remove micropollutants from the environment include adsorption onto powdered activated carbon, which is then separated from the…

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This wastewater-treatment process also captures carbon dioxide

Researchers from the University of Colorado Boulder (Boulder, Colo.; www.colorado.edu) have developed a technology that combines wastewater treatment and carbon capture, resulting in a carbon-negative process that actually produces energy. The technology — called microbial electrolytic carbon capture (MECC) —…

Treating Wastewater for Industrial Reuse

Secondary treated wastewater from municipal plants can be a water resource for industry. Important water characteristics and treatment options are discussed Water is a precious resource, and water quality and water pollution are important issues. Many companies and industries are…

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Water Takes the Stage at Achema 2015

The emphasis on water management at Achema 2015 indicates the critical nature of water to all industry sectors as the CPI expand and evolve In June, chemical engineers from around the world convened in Frankfurt am Main, Germany for Achema…

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Wastewater Sludge Centrifugation Before Drying

The decanter centrifuge is an important piece of equipment for sludge volume reduction prior to thermal drying. Understanding centrifuge operation helps manage drying energy costs Consecutive mechanical dewatering and thermal drying are integral parts of sludge management, lowering the sludge…

Combine wastewater treatment with biofuel production

Algae Systems LLC (Daphne, Ala.; www.algaesystems.com) has inaugurated a demonstration plant that integrates municipal wastewater treatment with the cultivation of biofuel-producing algae. Pretreated and disinfected municipal wastewater is passed to Algae Systems offshore floating-bag photobioreactors (PBRs), which are located in…

Weftec 2014 Show Preview

The Water Environment Federation (Alexandria, Va.; www.wef.org) is holding its annual Weftec exhibition and conference from Sept. 27–Oct. 1, 2014 at the Ernest N. Morial Convention Center in New Orleans, La. The event will feature numerous technical sessions and committee…