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Purification treatment process for waste plastic washing wastewater

A technology for purifying and treating waste plastics, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. Effect

Inactive Publication Date: 2016-12-21
张慧坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] From the above process, it can be seen that in the recycling process of waste plastics, a large amount of water is used for washing (about three tons of water is consumed for washing one ton of waste plastics), and a large amount of NAOH and cleaning agent materials are added to the washing process, resulting in A large amount of sewage has formed secondary pollution

Method used

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  • Purification treatment process for waste plastic washing wastewater
  • Purification treatment process for waste plastic washing wastewater

Examples

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Embodiment Construction

[0029] Examples such as figure 1 Shown, a kind of purification treatment process of waste plastic washing sewage, comprises the following steps:

[0030] 1. The stirring step is to discharge the washing sewage into the purification tank. Taking the length of the pool * width * depth = 4 meters * 4 meters * 2 meters as an example, the depth of sewage injection is 1.6 meters. When the sewage is injected into 1.6 meters, stop injecting sewage and start The mixing pump is used for mixing. The mixing pump is a submersible slurry pump mixer. The submersible slurry pump mixer is used, which has less investment, is easy to manufacture, and has a uniform flow rate of mixing water.

[0031] 2. Flocculation and sedimentation steps:

[0032] A. The first flocculation and sedimentation step

[0033] Add 1# flocculation purification agent in proportion, 1# flocculation purification agent is polyacrylamide, the addition amount is 8 / 100,000 of the sewage weight, stir to obtain preliminary f...

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Abstract

The invention discloses a purification treatment process for waste plastic washing wastewater. The purification treatment process comprises a step of flocculating sedimentation, wherein the step of flocculating sedimentation comprises the step of primary flocculating sedimentation. By adopting an above-mentioned scheme, the purification treatment process provided by the invention can completely transform wastewater into circulating water and fuel used for production, and has low cost, fast wastewater purification speed and good purification effect.

Description

technical field [0001] The invention relates to the technical field of industrial sewage treatment, and relates to a purification treatment process for waste plastic washing sewage. Background technique [0002] The plastics industry is one of the fastest growing industries today. At present, my country's plastic consumption is more than 38.18 million tons, ranking second in the world, with an annual consumption growth rate of 12.3%, and has become a veritable plastic powerhouse. [0003] However, with the rapid development of the plastics industry, a large amount of waste plastics are produced in the process of plastic consumption and circulation, forming increasingly serious color pollution. To solve this color pollution, the main work is the recycling of waste plastics. [0004] The recycling process of waste plastics is as follows: [0005] [0006] From the above process, it can be seen that in the recycling process of waste plastics, a large amount of water is us...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
CPCC02F1/5245C02F1/56
Inventor 张慧坤
Owner 张慧坤
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