Water-supply issues are emerging as a national concern with certain sectors coming under increasing scrutiny. This is certainly the case with the ethanol industry. State discharge regulations dictate that plant designs incorporate technological solutions to minimize water use. These designs…
A research team from the University of South Australia (Adelaide; www.unisa.edu.au) and the East China Normal University (Shanghai; www.ecnu.edu.cn) has developed a capacitive deionization technology (CDI) that uses graphene-like nanoflakes as electrodes, instead of conventionally used activated carbon (AC) materials.…
A desalination system developed by Watervap LLC (Marble Hill, Ga.; www.h2ovap.com) separates saltwater of any concentration into highly purified water and dry solid minerals with high efficiency. The company’s Zero Liquid Discharge (ZLD) process represents a low-cost alternative to brine…
BioAir Solutions Clean the air from wastewater treatment plants without carbon Using its proprietary EcoBase synthetic media, this firm has developed a line of odor control products (photo) that remove both organic and inorganic odorous compounds from the airstreams of…
Question: How are hydrocarbons best removed from water? Answer: First, the type of hydrocarbons present must be identified. Typically, the hydrocarbons in question are in the form of oil or an oil-like substance. In that case, the miscibility of oil…
Athough the municipal water demand is considerably greater than that of industry, many of the municipal needs are addressed by relatively basic technologies, while industrial requirements can only be met with advanced treatment options. And, as industrial water demands continue…
Dow Water and Process Solutions (DW&PS; Minneapolis, Minn.; www.dowwaterandprocess.com), a business unit of The Dow Chemical Co., unveiled a simplified electrodeionization (EDI) product at the recent Singapore International Water Week event. The new version of the product reduces operating costs…
A next-generation, carbon-enhanced membrane-bioreactor (MBR) system improves treatment of industrial wastewater with high organic content and containing compounds that resist microbial breakdown. The system allows economic reuse of wastewater or discharge to meet stringent environmental standards. The new MBR, dubbed…
Question: What is driving the trend toward increased water reuse and how is membrane technology addressing this? Furthermore, what does the future hold for water reuse? Answer: Meeting water demands and ensuring a plentiful supply of water for future generations…
Mechanical processes can offer an environmentally friendly and safer option to chemical water treatment Non-chemical methods for conditioning water for use in cooling towers and boilers have been investigated, marketed and installed for over 100 years. In light of the…