Waste Water Treatment
As with any mass or in particular vibratory finishing application, a slow, continuous stream of water is fed into the bowls for lubrication of the parts and finishing media. The water discharged from the process contains metal fragments and degraded media that require disposal. Flushing the water down the sewer is no longer an option due to the metal and other solids content of the effluent, not to mention the possibility of clogged pipes due to the ceramic and plastic media fines. Until recently, disposal was time consuming and very expensive, but recent developments in the use of small centrifuges and/or paper media using filtration units have not only made treatment prior to disposal down sewers possible they have led in some instances to waste water being able to be cleaned to the point it can be re-used in the machines many times over.
BV Products manufactures a range of equipment that provide practical solutions to the problem of treating the waste from mass finishing processes. These include, centrifuges, paper bed /band filters, simple settling/recycling tanks and more comprehensive systems that can be a combination of all the afore mentioned that allow the re-cycling of waste water.
BV products range of SCT tanks are in-expensive, self- contained units that utilises “under over” settling of solids and they can be used in two different ways. In simple polishing processes using non-degrading medias (like porcelain) they can offer water and compound return to the machine for re-use for a number of days. If wearing medias are used the tank can be set up as a non-return system to simply settle solids and transfer the cleaned water via the integrated pump to sewer or other collection system. Please note that SCT tanks are NOT waste water treatment systems.
BV Products range of PFA – Paper band/bed filter units are semi-automatic, simplified membrane filters. The principle is simple. The units consist of a stainless steel mesh conveyor which supports a continuous length of filter paper. Waste water from the finishing operation passes on to the filter paper. Eventually the section under the discharge hose “blinds” or clogs and a puddle forms on the paper. Once it reaches a pre-set depth a float rises and trips the servo motor which indexes a fresh section of paper into place. At the end of a working day the waste paper is simply cut off and disposed in a hard waste container. The PFA units come in a number of sizes and capacities.
BV Products range of standalone, Eco waste water treatment systems come in a variety of models to suit customer’s budgets and requirements. All are based on the use of centrifugal force to separate suspended solids from the waste water. The centrifuges can be complimented in a number of ways – if dissolved solids are an issue – with a combination pH control or flocculation. The Eco systems can be designed & supplied with a variety of dirty water and clean water tanks fitted with stirrers. This in some instances can enable waste from the finishing machines to be cleaned and re-cycled for lengthy periods thus enabling savings in water and compound usage and waste disposal.
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If the results are right,
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