Water purification in plastics recycling

The Italian company Depur Padana Acque has been in the plastics recycling field since 1993, designing, developing and patenting specific technologies to address and resolve all different problems related to waste water in plastic processing. Several are now the waste water treatment plants in relation to postconsumer recycling of PET bottles and HDPE bottles and jars in Italy and abroad, and the same goes for the agricultural/industrial LDPE film industry and for other alternative types of plastics (PP, PVC, Sele film, plast mix and so on). Problems with water vary, so do the technical solutions developed, more or less articulated, depending on the type of material being processed and the results required in terms of purification. Specific technologies for the treatment of degassing water from extruders and for the purification and recycling of hot soda washing baths for PET flakes have also been developed, in collaboration with some of the company's most prestigious clients. The significant amount of water used in the phases of the process has determined the need to find and put in place optimized solutions, which allow to work, in most cases, reusing treated water, with hardly any discharge, thus achieving important results in terms of quality and cost saving for customers.
Depur Padana Acque designs and builds "tailor made" purification plants, completely and specifically manufactured on the basis of the actual needs and requirements of the customer, starting from simple mechanical filtration and sand removal systems, through to clarification treatments by chemical/physical technologies, up to purification, even at dissolved contamination (organic) level, by biological purification plants. The treatment of waste mud produced in the purification process plays a fundamental role in the optimization of water treatment management and related costs. Depur Padana Acque has therefore identified a number of specific, optimal, diversified, technical solutions for all related problems.