gas chlorine system Articles

The Challenge: Plant Conversion While Maintaining Water QualityThe Portland Water District needed to convert a major chlorine gas feed system to liquid sodium hypochlorite in order to eliminate hazards associated with gas systems and to enhance chlorine residual throughout the distribution system. Wright-Pierce was selected to engineer the project. The largest water treatment facility in ...

May 8, 2007

By Westfall Manufacturing Co.

Chlorine has been the mainstay of the wastewater disinfection industry for more than 100 years due to its effectiveness, low cost and availability. However, due to various problems associated with chlorine, the Hillsborough County, Florida Water Resource Services Department decided to replace the high-level reuse water chlorine gas disinfection system at the Valrico Advanced Wastewater Treatment ...

Oct. 20, 2006

By Water Environment Federation (WEF)

The presence of residual chlorine and organic matter govern the bacterial regrowth within a water distribution system. The bacterial growth model is essential to predict the spatial and temporal variation of all these substances throughout the system. The parameters governing the bacterial growth and biodegradable dissolved organic carbon (BDOC) utilization are difficult to determine by ...

May 31, 2011

By IWA Publishing

ABSTRACTChlorine has been used as a standard for disinfecting wastewater for many years. While being the standard There are many levels of automation for control of disinfection. To select the best control approach for your facility both control strategies and chlorination chemistry must be understood. Permit conditions must also be fully identified; organism concentrations and operational data. ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Abstract A number of wastewater treatment facilities using gas disinfection have decided to convert to liquid disinfection for several reasons including safety, regulatory, security, and economic factors. An optimal technology plan should be developed to facilitate the conversion. This presentation provides a case study of a large chlorine disinfection system, and demonstrates key issues of ...

Oct. 12, 2007

By Water Environment Federation (WEF)

 ABSTRACT For many years the use of gaseous chlorine at water treatment plants has been an effective and widely used method of disinfection. It is still the most commonly used disinfectant treatment in water treatment plants in the United States. In recent years however, the safety of chlorine gas has come under increased scrutiny. The side effects to chlorine gas exposure at low levels ...

Oct. 12, 2007

By Water Environment Federation (WEF)

Project: Buffalo Wild Wings Restaurant Location: Metairie, LA Products: Liquid Boot 500 Gas Vapor Mitigation System GeoVent Gas Venting System Background: The location of a new, two-story Buffalo Wild Wings restaurant was adjacent to a former dry cleaner site. The primary concerns were chlorinated compounds and ...

Feb. 14, 2013

By CETCO

In April 2019, six people became sick after being exposed to chlorine gas at a hotel pool in India, because one of the chlorine gas cylinders, which had been stored improperly, began to leak, exposing swimmers to chlorine gas.  In June 2019, some 50 pool patrons became ill after a pump malfunction leaked chlorine gas at an indoor pool in Utah. These are not isolated events.  According ...

Jul. 30, 2019

By PureAire Monitoring Systems, Inc

Due to the inherent risks associated with the use of chlorine gas as a sanitizer for the City of Tucson’s twenty-six municipal swimming pool sites, I found myself in search of an alternative water sanitation method. The challenge was clear; find a system that would be safer to manage than gas chlorine, yet yield the same favorable sanitation and water quality results. Since all the sites ...

Jun. 30, 2002

By ClearWater Tech LLC

Detailed design, works manufacture and site installation of Sodium Hypochlorite dosing systems for conversion of 6 sites from Chlorine gas to liquid Sodium Hypochlorite Client: MWH Area: Hertfordshire WES Ltd were involved from early on in the project design stage in developing new Sodium Hypochlorite and Sodium Bisulphite dosing systems for Three Valleys ...

Oct. 9, 2011

By WES Limited

The superintendent of a 12 MGD water treatment plant (WTP) reports that abandoning a plan to switch from chlorine gas to bleach for primar y disinfection was enabled through a well-engineered risk management plan for any gas leak risk, thereby allowing him to continue receiving much ...

Feb. 28, 2017

By ChlorTainer, Inc

Stockton East Water District in California needed to meet Uniform Fire Code guidelines while keeping gas chlorination equipment as their primary disinfection treatment. Since its construction in 1977, the Stockton East Water District Dr. Joe Waidhofer Water Treatment Plant in Stockton, California, has used two Fischer & Porter model 70C4500 series gas chlorinators with 71P1100A pressure ...

Jan. 31, 2007

By Industrie De Nora S.p.A. | De Nora Water Technologies

The Situation: The City of Crossville, Tennessee, needed to address increasingly strict regulations on the use of gas chlorine to disinfect their community’s water. The Solution: By switching from gas chlorine to MIOX mixed oxidants, the City has reduced operational costs, improved residual durability, reduced byproduct formation, produced longer filter ...

Jan. 29, 2012

By MIOX Corporation - Johnson Matthey`s Water Technologies