Due to Ohio EPA Operator of Rule Regulations, IFM has been assisting a Northwest Ohio Phenolic Resin manufacturer with daily operations of its NPDES permitted waste- water treatment plant. The resin manufacturer produces raw materials for various manufacturing activities including tire manufacturing and other chemical industries.
The byproduct of the manufacturing process is high strength distillate wastewater with COD and phenol levels around 30,000 mg/L. This solution is slow fed and blended with other dilute streams to approximately 1,000 mg/L of phenol and then dosed into an activated sludge plant followed by clarification and post filtration prior to discharge.
Since August 2012, operational problems were started by massive electrical outage and plant upset. Since that time, a concentration of fine, poor settling total suspended solids that would pass through the clarifier, media and post carbon filtration. TSS values from the clarifier yielded 200 mg/L+ for some time and limited discharge and increased water recycling through the WWTP. This led to massive recycling volumes of these fine solids. The other issue was almost nonexistent microlife, insert solids and poor bulk water quality.
IFM suggested GIM 1008 and within 10 days, 30 minute settling tests, clarifier TSS dropped and biology drastically improved. GIM 1008 was initially added to the aeration basin and within 1 week improved floc and clarifier clarity was observed. See the attached chart on improved Clarifier TSS. Since the supplementa- tion of GIM 1008 on May 10, 2013, the improvement in clarity has reduced TSS loadings on post filtration and improved COD removal.