New edition of NSF/ANSI 50 evaluates the risk and toxicity of pool chemicals and also requires testing for trace contaminants
Global public health organization NSF Intl. has published the first American National Standard to address the health effects of pool and spa treatment chemicals. The new edition of NSF/ANSI 50: Equipment for Pools, Spas, Hot Tubs and Other Recreational Water Facilities, evaluates the risk and toxicity of pool chemicals and also requires testing for trace contaminants in chemicals which are used in the treatment and circulation systems of swimming pools, spas and water parks.
A proportional feed system will maintain a constant chemical-injection-to-water-flow ratio, regardless of changes in the system’s flow rate or pressure. Components of this system include a BW Digi-Meter F-2000-PC digital paddlewheel flowmeter; a Star Tank in 7-, 15- or 30-gal capacity that is rectangular and constructed of polyethylene with UV inhibitors; and a Chem-Feed C-1500N diaphragm or FlexFlo A-100N peristaltic chemical metering injection pump.
Spectrus TD1100E is a non-oxidizing microbiological control agent used to kill or control growth of microbial populations in open evaporative cooling systems. It is designed to reduce microbiologically influenced corrosion and the potential risk of Legionella bacteria, helping avoid damage to equipment and keeping system inefficiencies at bay. A decreased use of chemicals lowers environmental impact.
Supai, Ariz., is the capital of the Havasupai Indian Reservation in the western Grand Canyon. The reservation is the site of some of the country’s most beautiful waterfalls and is a popular destination for hikers and backpackers. In fact, hiking is one of the few ways to reach Supai, which is the only place in the U.S. where mail is still delivered by mules. The nearest surfaced road is 9 miles away.
The pulp and paper industry is one of the heaviest users of water within the North American industrial economy, requiring an average of 54 cu meters of water per metric ton of finished product. As water is used in nearly every part of the manufacturing process, accumulation of scale is a phenomenon that can occur in all pulp and paper making processes. This occurs even with the purest water and state-of-the art water treatment.
AWWA CEO David LaFrance thanks water professionals nationwide for keeping water safe for drinking
Dec. 16, 2014, marked the 40th anniversary of the Safe Drinking Water Act (SDWA), which today includes regulations for more than 90 contaminants. American Water Works Assn. (AWWA) CEO David LaFrance issued the following statement to mark the occasion.
The company's filming amine emulsion will be used in the university’s cooling water towers
The University of Michigan is partnering with the U.S. division of French water purification company Mexel to perform a 12-month demonstration using the company’s filming amine emulsion Mexel 432/0 for cooling water treatment.
A Ph.D. student's research may save lives
A "super detector" that can track the traces of a lump of sugar in the Baltic Sea was the starting point for a potentially life-saving technique developed at Lund University in Sweden. The method detects toxic algae blooms in drinking water.
A biosensor recently developed at Lund University can detect substances at 10,000 times lower concentrations than what is currently possible. PhD student Lesedi Lebogang found a practical application that could be particularly helpful in warm climates such as Africa, Australia and the southern U.S.
On April 11, the U.S. Environmental Protection Agency (EPA) announced its 2014 to 2018 Strategic Plan, with goals that include protecting U.S. waters, ensuring the safety of chemicals, and protecting human health and the environment through enhanced compliance activities.
Green chemicals play a role in water treatment & reuse applications
Ellis Anderson will expand Harwil’s reach into the water treatment, municipal, industrial, irrigation and HVAC markets
Ellis Anderson has been named vice president of Harwil Corp. Harwil is a manufacturer of flow switches, level switches, chemical feed controls and wireless systems for fluid processes. Anderson started in the water industry in 1987 as the founder of Pura Inc., an ultraviolet water treatment company. Harwil, founded almost 60 years ago in 1956, is best known in the pool and spa industry for the flow switches used in spas and pool salt chlorinators.