Click here to enlarge imageADAPCO Environmental Solutions’ VulchurTM product is a patented aqueous amine resin solution that also can help control corrosion in wastewater systems.
Most products on the market contain oxidizers, caustic soda and bleach that can effectively mask odor, but also harm systems by significantly increasing systems’ pH levels, creating calcium and sodium build-up, and corroding systems in the process. Vulchur removes odor without increasing pH levels and actually deters corrosion.
In collection systems, the chemical is fed by chemical feed pump at a predetermined dose rate based on dissolved H2S in the liquid. At initial startup, typical feed rates are four parts Vulchur to one part dissolved sulfide per million gallons of flow, according to ADAPCO General Manager Jerry Davis. That dosage can often go down as conditions stabilize.
The chemical is a drop-in replacement for caustic and bleach in chemical scrubbers. It is cost-competitive, has no special handling requirements and is environmentally safe. It does not cause calcium build-up or sodium discharge, so it minimizes the need for acid washing in chemical scrubbers.
Benefits extend beyond odor control, Davis said.
The polysulfide formed by the chemical reaction has a tendency to adhere to pipe walls and concrete structures in the collection system. In the process, it forms a coating that helps break down the bacteria slime layer, destroying the habitat of sulfide-producing bacteria. This, in turn, can lower chemical consumption and reduce corrosive gases in the sewer.