Waste plastic treatment system

Abstract

The invention discloses a waste plastic treatment system. The waste plastic treatment system comprises a shredding mechanism, a cleaning mechanism, a dewatering mechanism, an extrusion forming mechanism, a storage mechanism and conveying mechanisms arranged between the mechanisms, wherein the shredding mechanism, the cleaning mechanism, the dewatering mechanism, the extrusion forming mechanism and the storage mechanism are arranged in sequence. The waste plastic treatment system further comprises a waste water treatment system and a waste gas treatment system. Waste water and waste gas generated by the mechanisms of the waste plastic treatment system are gathered and then discharged into the waste water treatment system and the waste gas treatment system respectively to be treated. The waste water treatment system comprises a regulation tank, a precipitation tank, an air flotation tank and a multi-medium filtration tank which are connected in sequence. Homogenization and flow regulation of the waste water can be achieved when the waste water passes through the regulation tank, precipitable substances are removed when the waste water passes through the precipitation tank, non-precipitable suspended substances and soluble impurities are removed when the waste water passes through the air flotation tank, and finally the waste water is further filtered and clarified when passing through the multi-medium filtration tank. By carrying out specific technological treatment on the waste water and the waste gas, pollutants are well removed, the pollutant treatment effect is good, and closed circulation of the water in the waste plastic treatment process is achieved.

Description

technical field [0001] The invention relates to the technical field of design of plastic processing devices, in particular to a waste plastic processing system with high environmental protection performance. Background technique [0002] In the process of waste plastic treatment, a large amount of waste water and waste gas will be produced. If these waste water or waste gas are directly discharged outside, it will inevitably cause serious environmental pollution. [0003] The generation of waste water mainly comes from the cleaning of waste plastics, the wet crushing process and the floor washing of the production workshop. The main pollutants in wastewater are soil, gravel, waste paper, plastic powder and other substances. The concentration of COD (chemical oxygen demand) and SS (suspended solids) in wastewater are relatively high, reaching 500mg / L; The amount of wastewater produced is relatively large, and its biodegradability is relatively poor. Considering the nature o...

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Problems solved by technology

[0006] In order to solve the problem of poor waste water and waste gas treatment effect in the prior art, the present invention provides a waste plastic treatment system, which includes a shredding mechanism, a cleaning mechanism, a dehydration mechanism, an extrusion forming mechanism and a material storage mechanism arranged in sequence, and The conveying mechanism arranged between each mechanism, the waste plastic treatment system also includes a waste water treatment system and a waste gas treatment system, the waste water and waste gas generated by the shredding mechanism, cleaning mechanism, dehydration mechanism and extrusion forming mechanism are collected respectively discharged into the waste water treatment system and the waste gas treatment system for treatment;

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