New water purification facilities constructed by J.S. Alberici Construction Co., Inc., in Milwaukee, Wisconsin, will ensure the safety of the city's water supply.
Products at Work
This paper evaluates the effectiveness of generating chlorine dioxide gas using Eka Chemical's method of sodium chlorate/hydrogen peroxide/sulfuric acid technology as it compares to the Rio Linda (Vulcan) chlorine gas/25 percent sodium chlorite system process at the El Paso Water Utilities' 40 mgd Canal (Umbenhauer/ Robertson) Water Plant in El Paso, Texas.
Is a new method of generating chlorine dioxide gas using sodium chlorate more effective than the typical sodium chlorite system?
ADM Milling Co./Nokomis Mill is a grain milling company that produces flour for regional bread manufacturers. Located in Minneapolis, ASM produces 10,000 cwt., or one million pounds of flour a day. Their use of chlorinated water results in the treatment of 1.2 to 3.5 gallons of water per minute.
ADM Milling relies on chlorinated water in the tempering process of grain milling production. In short, the tempering process cleans the wheat to rid it of dirt and debris, toughens the outer layer of the wheat kernal, and softens the inside - or the part ADM harvests and turns into flour.
In order to comply with more stringent government regulations, one plant converted from chlorine to ozone treatment.
A California-based chicken processing plant needed an accurate, reliable method of maintaining high chlorine residuals in their sanitizing and cooling water tanks, known in the industry as "red water." This name comes from the content of blood and guts in the water. Although to the naked eye the water looks relatively free of these gory contents, it represented a chlorination control nightmare to the plant operators.
The tanks are about 4 ft. X 10 ft. X 40 ft. and contain approximately 100,000 gallons of chilled, chlorinated water at around 33°F.
Shower filter dechlorination requires its own unique design approach to meet various health requirements.In less than 10 years, shower filters have grown from a non-industry to a significant niche market. Consumers, at first only concerned with the quality of their drinking water, are now more aware of the importance of removing chlorine, one of nature's most toxic elements, from their shower water, too.
The many considerations in shower filter design
A backwashable depth filter process removes and destroys these microorganisms with great efficiency.
A three-year test of ozone and direct filtration so convinced the Altoona City Authority (ACA) of its merits that the central Pennsylvania water authority is now installing the technology at six new treatment plants and will retrofit another by 1999.
Products at Work
A new water disinfection system has been developed to inactivate Cryptosporidium oocysts and Giardia cysts in drinking water. The technology, known as the CID, inactivates these pathogenic waterborne microorganisms using enhanced ultraviolet (UV) irradiation technology without filtrate disposal, chemical addition or related hazardous by-products.
Machine Description and Full Scale Test Results