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.
Editors' notes
Kalic Liquid Lime from Buxton Lime Industries represents a major advance in lime-based treatments for effluent waste as well as for drinking water. The non toxic, non-corrosive and cost effective calcium hydroxide suspension has exceptional purity. Its very fine particles provide a stable suspension and large surface area which makes it highly reactive and extremely efficient for acid neutralisation and pH control.
Kalic is a safer and more economic alternative to caustic soda - an aggressive chemical which is classed corrosive and demands careful handling and storage. In contrast, Kalic is manufactured from natural material and satisfies the requirements of all current and predicted safety anti-pollution legislation. Furthermore, Kalic is immune to the wildly fluctuating price variations normally associated with caustic soda. And because Kalic requires fewer precautions for safe and easy use, the result is lower costs all round, whether for handling, protection, plant maintenance or environmental protection.
Kalic is less likely to damage plant and machinery because it can help protect tanks, vessels, valves and pipework from corrosion. Its low freezing point (0ºC) significantly reduces the need for lagging and trace heating of pipework, pumps and tanks. It is also easy to pump, easy to handle and easy to transport.
Kalic is manufactured by Buxton Lime, the largest producer of lime in the UK and ia part of the Tarmac Group. Buxton Lime's base in Buxton, Derbyshire, is situated on an abundant supply of pure limestone - a natural material regarded highly by the water and effluent sectors, as well as by other key processing and manufacturing industries.
Since its introduction, Kalic has enjoyed widespread use in a variety of industrial processes which include steel production, oil and agri-chemicals, food processing and pharmaceuticals. While in water and sewage treatment, processors have started to reap the superior technical performance and cost benefits of Kalic's tried and trusted formulation.
