Equipment Description:Biocides
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Biocides are used to control the build up of microbial organisms in the paper making system. If microbe populations grow out of control, the resulting slimes can cause loss of production, reduction in quality or even microbial corrosion. Microbes need food and water to develop, plus other essentials. Temperature, pH and oxygen all affect the rate of growth and the type of micro-organism that forms. As a result, the different environments found in a paper mill will favour the growth of different types of microbes. Biocides tend to be delivered in liquid form. |
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The dosing point and quantity added is dependent on how favourable the conditions are for promoting microbial[P/L] growth. [PL]Biocides can be added into the stock or white water, incoming freshwater, starch slurry and paste, clays and fillers and many other places. Each particular system will have certain areas that are prone to microbial outbreaks. Dosing can be continuous or in batches. Over dosing should be avoided – biocide is costly and is potentially harmful. Plate counts indicate if the microbial population is being kept under control. Biocides tend to be delivered in liquid form, and may require diluting before use. Delivery can be in bulk tanker, semi-bulk IBC containers, or smaller driums or kegs. Biocides are toxic and should therefore be treated with care. Make sure that the MSDS information is understood and followed. The use of Personal Protective Equipment is essential when handling biocides. |
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