Photo by FOGO Sp. z o.o.
Good practices and investments related to Cleaner Production
Example No. 69
Reducing phosphorus content in wastewater and reducing chemical consumption by changing the chemical used in the degreasing process
FOGO Sp. z o.o., Wilkowice
Industry branch: electromechanical
Main products: electric power generators
Resources in question:
(cost-free measure; the new degreaser has a price similar to the one used previously)
The results of tests on industrial wastewater from container no. 2 indicated frequent exceedances of the parameter “total phosphorus”, for which the threshold was set at 10 mg/l in the permit held, required under Water Law Act. Analysis of the chemicals used in the washer plant revealed that one of them contained phosphorus compounds. Therefore, it was decided to look for another degreasing agent with a lower content of this element.
Obtained benefits and effects of the implementation:
- Reduction of average phosphorus content in wastewater by more than 97%, (values significantly lower than 10 mg/l, i.e. from <0.3 mg/l, to 0.8 mg/l).
- The new degreasing agent works at half the concentration per unit volume of the bath, which results in:
- reduced consumption of degreasing agents by about 12,000 kg/year, which results in fewer chemicals reaching wastewater and liquid waste
- reduction in purchase costs by about 50%; estimated economic savings (resulting from about half the use of the new chemical and the similar price of the old and new agents) are almost PLN 25,000/year
- Report on the Cleaner Production Project No. 48.768, developed within the framework of the Cleaner Production Academy: "Modernization of technology and management in FOGO within the framework of implementation of the Cleaner Production Program"
- Materials (including photos) submitted by FOGO Sp. z o.o.