Denso
Kalic Liquid Lime enhances Denso Corporation's environmental objectives.
As part of its continuous commitment to quality improvement, world leading automotive components and systems manufacturer Denso corporation has recently installed a Kalic Liquid Lime dosing system at its Telford factory. The upgrade to Kalic to improve effluent discharge is a major step in achieving 'environmental preservation and harmony with society' - a core principle enshrined in Denso's philosophy.
Denso's Telford plant - just one of a string of manufacturing facilities around the world - is a major source of air conditioning units for leading UK and European car makers. However, the highly automated, state-of-the-art manufacturing facility produces 150-200 m3 of industrial effluent daily. This by-product of the cleaning and preparation processes comprises rinse waters, acids and alkalis which can contain dissolved metals, oils and grease.
Releasing this cocktail directly into the environment without proper treatment would be incompatible with Denso's principles. That is why chemical treatment is necessary in order to precipitate dissolved metals and adjust pH, as well as induce coagulation and settlement prior to final discharge to the main sewer.
Upgrading to Kalic Liquid Lime in the effluent plant chemical treatment system exemplifies Denso's commitment to improved environmental performance. Kalic was chosen to promote better pH control than that achieved by caustic soda; and to improve the standard of metals removal. But it has also resulted in better and faster solids separation, better safety and a significantly reduced environmental hazard. Furthermore, compared to caustic soda, Kalic provides significant cost savings.
Richard George, assistant facilities manager at Denso says: "The use of Kalic has significantly improved the appearance and quality of our effluent final discharge. The treatment process control has also improved and we are saving money compared to our previous system. That is why we are fully confident of continuing to meet consent parameters."
The Kalic system for Denso was designed and installed by Gee & Co in Spring 2002. Comprising a bulk storage tank connected to two automatically operated dosing pump systems for primary neutralisation and final pH adjustment, the system has proved very reliable in operation. All in all, the transition from caustic soda to has gone smoothly and the use of Kalic to improve effluent discharge must be seen as a major step in achieving the Japanese corporation's noble environmental objectives.
