After Purdue University noticed that the water and sewer costs for their Biochemistry building were running quite high, a subsequent investigation showed that the building vacuum system was the cause of the high bills and massive water consumption. Purdue University…
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 interest in automating wastewater treatment processes across a broad range of…
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 be minimized by the addition of polyaluminum…
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 and separate by traditional means, says Ron Drake,…
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 bioreactor (MBR) that utilizes membrane laminate technology. “By combining our two technologies we…
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, the electrochemical oxidation cell was developed by Element Six (www.e6.com), a designer and manufacturer…
QGC’s water treatment plant at its northern coal seam gas fields near Wandoan in Queensland, Australia, was named Industrial Water Project of the Year at the annual Global Water Awards. The award represents the most impressive technical or environmental achievement…
The Dow Chemical Co. (Midland, Mich.; www.dow.com) has been awarded the prestigious U.S. Water Prize by the U.S. Water Alliance for its work in promoting and enabling more sustainable use and management of water by companies across the water value…
Activated sludge processes are inherently complex. Proper system design, operation and maintenance are essential to adequately break down target organic materials Since its discovery more than 100 years ago in 1914 by Ardern and Lockett [ 1 ], the activated…
Ecolab Inc. (St. Paul, Minn.; www.ecolab.com), a global leader in water, hygiene and energy technologies and services, has changed the name of Nalco — its water and process services business — to Nalco Water (nalco.ecolab.com). The new name more…