Chemical Engineering » Water Treatment

CNT membrane aids distillation of brine

Chemical Engineering — Sat, 01 Jul 2017 00:00:00 +0000

Membrane distillation (MD) — a thermal desalination technique used for recovering pure water from concentrated salt solutions — is hampered by high energy consumption, low single-pass recovery rates and by

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Finely tuned electrodes for water treatment

Chemical Engineering — Sat, 01 Jul 2017 00:00:00 +0000

A new electrochemical water-treatment process developed in the laboratory of T. Alan Hatton, professor of chemical engineering at Massachusetts Institute of Technology (MIT; Cambridge; web.mit.edu), employs

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A continuous biotreatment process that degrades phenol in wastewater

Chemical Engineering — Sat, 01 Jul 2017 00:00:00 +0000

Although there are several ways to reduce the phenol concentration in industrial effluent, they each have drawbacks. Chemical treatment, such as adsorption and stripping, is fast but expensive, and the

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Low-cost water treatment uses CO2 to remove particles without membranes

Chemical Engineering — Sat, 01 Jul 2017 00:00:00 +0000

Researchers at Princeton University (Princeton, N.J.; www.princeton.edu) have developed a water treatment technique that injects carbon dioxide gas into a stream of water to separate suspended particles that

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WEFTEC Show Preview

Chemical Engineering — Thu, 01 Sep 2016 00:00:00 +0000

The Weftec 2016 conference and exhibition will take place Sept. 24–28 in New Orleans, La. This Show Preview highlights a small selection of the water-related products and services that will be on display inside the Weftec 2016 exhibit hall.

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A process to treat tight emulsions and intractable oily wastes

Chemical Engineering — Thu, 01 Sep 2016 00:00:00 +0000

Spent invert drilling fluids, slop oil, rag layers, and tank bottoms often present as very tight emulsions having high brine and solids fractions that render them difficult and economically unfeasible to break

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Advantages Gained in Automating Industrial Wastewater Treatment Plants

Chemical Engineering — Thu, 01 Sep 2016 00:00:00 +0000

Process monitoring and automation can improve efficiencies in wastewater treatment systems. A number of parameters well worth monitoring, as well as tips for implementation are described There is growing

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Challenges of Handling Filamentous and Viscous Wastewater Sludge

Chemical Engineering — Thu, 01 Sep 2016 00:00:00 +0000

Excessive growth of filaments and biopolymers in activated sludge should be controlled in CPI wastewater-treatment plants, as both lead to sludge that is hard to handle. The sticky behavior of such sludge can

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A next-generation membrane bioreactor

Chemical Engineering — Fri, 01 Jul 2016 00:00:00 +0000

Last month at the IFAT trade fair (May 30–June 3; Munich, Germany), Huber SE (Berching: www.huber.de) and Microdyn-Nadir GmbH (Wiesbaden, both Germany: www.microdyn-nadir.de) unveiled a rotating membrane

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Diamond-based electrodes allow handling of difficult-to-treat wastewaters

Chemical Engineering — Wed, 01 Jun 2016 00:00:00 +0000

A scaled-up version of an electrochemical cell with boron-doped diamond electrodes has been introduced, and the system treats wastewaters containing difficult-to-oxidize dissolved pollutants. Known as Diamox

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