One House Call Solves Wastewater Issue
David Joyce, AquaPure Technical Service Representative, describes a wastewater treatment (WWT) house call that he made three months ago.
Customer’s WWT pain:
“I had a metal coatings company call me three months ago with some WWT issues they were having. They were using an aluminum coagulant that did a good job keeping their zinc (Zn) discharge numbers below the required limits but created a problem with total suspended solids (TSS). The aluminum coagulant produced too light a flock and did not settle quickly enough. This caused a good amount of flock to be discharged.
The company installed filter bags to catch the flock, which solved the TSS problem. They quickly realized, however, that they now had a new issue. The operators had to change the filter bags up to 3 times a week. This was not only time-consuming but also added more cost to their process.”
The house call:
“My first step at a WWT house call is always to perform a system audit. After reviewing this customer’s process and equipment in the system audit I knew that the solution to their issue was to switch to our iron coagulant, AquaPure I-300. This product is superior in settling suspended solids and works exceptionally well on copper, nickel, chromium and zinc.
I did some jar testing with AquaPure I-300 and the results were instantaneous. It produced a larger and heavier flock that settled quicker than the aluminum coagulant. The customer decided to switch to AquaPure I-300 upon seeing the jar testing results.”
Three months later:
“The filter bags are still in place and have not needed to be changed since the customer started using AquaPure I-300 three months ago. This simple switch has solved their TSS issue, kept their Zn discharge numbers below the required limits and eliminated the labor and cost of changing the filter bags.”