Research and Qualifications
DNR Qualification NSF International Authorization Wetted Lists University of Iowa State Enviromental StudyHaving trouble viewing the links above? Try installing Adobe Reader.
HaysPurides Benefits
Saftey
Safer Neighborhoods
Since many water treatment facilities are located adjacent to day care centers, schools, subdivisions and businesses, safety is an important consideration. The PURIDE process eliminates the transportation, handling, and storage of hazardous water disinfection chemicals like chlorine gas and concentrated bleach (sodium hypochlorite).
Danger: Delivered Hypochlorite
In an effort to reduce the regulatory burden and improve working environments, many water treatment plants have converted to bulk sodium hypochlorite. Hypochlorite is typically sold at concentrations of 10 to 15 percent strength, which tends to off-gas. The “safety-in-use risk” of commercial hypochlorite is actually higher than that of chlorine gas, with the accident rate for sodium hypochlorite more than six times that of chlorine gas, according to the American Association for Poison Control. Since commercial hypochlorite is perceived to have low potential to cause fatalities, little regulatory attention has been focused on the actual rate of incidents, leaving no risk management practices in place to protect the operator from potential mishandling. Despite the lack of regulatory control, sodium hypochlorite spills release chlorine gas, chlorine gas can be formed by interactions with other chemicals, and spontaneous ignition can be provoked by a heat source.
Water Quality
In an effort to reduce the regulatory burden and improve working environments, many water treatment plants have converted to bulk sodium hypochlorite. Hypochlorite is typically sold at concentrations of 10 to 15 percent strength, which tends to off-gas. The “safety-in-use risk” of commercial hypochlorite is actually higher than that of chlorine gas, with the accident rate for sodium hypochlorite more than six times that of chlorine gas, according to the American Association for Poison Control. Since commercial hypochlorite is perceived to have low potential to cause fatalities, little regulatory attention has been focused on the actual rate of incidents, leaving no risk management practices in place to protect the operator from potential mishandling. Despite the lack of regulatory control, sodium hypochlorite spills release chlorine gas, chlorine gas can be formed by interactions with other chemicals, and spontaneous ignition can be provoked by a heat source.
- Mixed oxidants break down odor causing compounds, such as phenols or organochloramines.
- Mixed oxidants appear to remove the musty odors of geosmin and methyl isoborneol (MIB) caused when the raw water source suffers algae blooms.
- Mixed oxidants oxidize ammonia nitrogen at substantially lower chlorine-to-nitrogen ratios.
- Mixed oxidants do not readily form di- and tri-chloramines or cyanogen chloride, both noted causes of taste and odor problems.
- Mixed oxidants oxidize hydrogen sulfides more rapidly than chlorine and without pH adjustment.
Operations
PURIDE is cost effective, generates on demand and on site, and is easy and safe to maintain.
Cost Savings
The lifecycle cost of operating a PURIDE on-site generation system is very competitive with chlorine gas alternatives, and is typically less than delivered hypochlorite and the advanced disinfection technologies of chlorine dioxide, ozone and UV.
Onsite
The PURIDE system generates chlorine-based disinfectant on-site as needed, and is designed to handle the peak demand for daily operations.
Ease of Operation
PURIDE on-site chlorine generation systems are as easy to maintain as chlorine gas systems, but without the hazards.