[Case Study] Reduction of BOD and COD in the Metal Processing Industry <Ishikawa Prefecture>

The case where the elimination of hazardous substances (dilute sulfuric acid) from the used chemicals has reduced storage tasks and improved safety.

We would like to introduce a case study of the implementation of "Aqua Nature Plus" and "Aqua Blaster" at a metal processing factory. The challenge was that the compounds used for barrel polishing contained organic substances that increased BOD and COD, making it impossible to meet the internal standards for BOD and COD with the current treatment method (coagulation treatment). After implementation, the number of chemical agents used was reduced from five to two, significantly decreasing the effort required for replenishing and adjusting the chemicals. As a result, BOD and COD levels dropped to below 30 mg/L, clearing the internal standards. [Case Overview (Partial)] ■ Challenges - Reduce BOD and COD levels, which exceed internal standards, to below the internal standard values. - Simplify the adjustments for coagulation issues during trouble occurrences as much as possible. ■ Results - Reduced running costs by over 4 million yen annually, bringing them down to about 50% of the pre-implementation costs. *For more details, please refer to the related links or feel free to contact us.

Water treatment equipment