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AbstractA company from South Poland dealing with the production of furniture elements, especially plywood boards made from spruce timber is looking for an innovative solution for the purification of sewage from the gluing and binding process. An additional advantage would be the possibility of recycling the treated water and its facilitation in cleaning the rollers on the production line. The company is interested in commercial agreement with technical consultancy.DetailsA polish company from furniture sector is looking for an innovative solution for the purification of sewage from the gluing and binding process.Post-binding water is a by-product of plywood production. What more part of the machines on the production line has to be cleaned with the use of water and detergents. The sewage formed during the process of washing and production cannot be directed to the sewage system as it contains a relatively large percentage of slurry and trace elements of formaldehyde. At present, all post gluing and binding sewage is treated as hazardous waste material, stored in tanks and then directed to the incinerator, what causes additional costs. The company is searching for an innovative solution for the purification of the gluing and binding sewage, which would allow for a separation of the slurry with a simultaneous removal of the trace elements of formaldehyde. Research conducted on this topic has shown that coagulation is an effective method which may be used in the removal of slurry from waste water. However the process did not remove the trace elements of formaldehyde. The water which shall be cleaned according to the required technology should meet the demands specified by the Minister of the Infrastructure concerning the permitted levels of mass substances which may be found in industrial waste water intended as sewage. An additional advantage of the required technology would be the possibility of recycling the treated water and its facilitation in cleaning the rollers on the production line. The technological solutions ought to make it possible to introduce a selective work time because sewage formation is not a continuous process. Technical Specifications / Specific technical requirements: - relatively high rate of efficiency at low capacity levels, as the maximum daily output of sewage resulting from the use of bonding agents is estimated at 100 l, - it is permissible for the sediment formed as a result of the sewage treatment process to be a hazardous waste product, however the proposed process should strive to reduce the hydration of the above-mentioned sediment, - the offer should encompass a full system element inventory, including all relevant machines and apparatus with full technical description, - effective and energy-saving, - safe for people and the environment.
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