阅读说明：本技术 一种塑料袋的分次降解处理方法 (Grading degradation treatment method for plastic bags ) 是由 汪明 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种塑料袋的分次降解处理方法,包括S1、收集塑料袋、S2、粉碎塑料袋、S3、浸泡塑料颗粒、S4、降解塑料颗粒和S5、塑料袋原料回收利用五个步骤；本发明通过这五个步骤的设置,能够将废弃塑料袋回收处理,达到保护环境的目的,具体的是通过降解液和悬菌液的协效复配,能够有效地将塑料的大分子降解成小分子,在不污染环境的前提下,以便于降解的塑料分子能够进行二次重复利用,为白色污染治理提供了新的环保途径。(The invention discloses a graded degradation treatment method of plastic bags, which comprises five steps of S1, plastic bag collection, S2, plastic bag crushing, S3, plastic particle soaking, S4, plastic particle degradation and S5, and plastic bag raw material recycling; the five steps are arranged, so that the waste plastic bags can be recycled and treated, the purpose of protecting the environment is achieved, specifically, the degradation liquid and the suspension liquid are compounded synergistically, so that large molecules of plastics can be effectively degraded into small molecules, the degraded plastic molecules can be recycled for the second time on the premise of not polluting the environment, and a new environment-friendly way is provided for treating white pollution.)

1. A graded degradation treatment method of plastic bags is characterized by comprising the following steps:

s1, collecting plastic bags:

(1) collecting waste plastic bags, breaking the plastic bags, cleaning and drying the plastic bags after the bag breaking treatment, and then cutting the plastic bags in a cutter;

(2) putting the chopped crushed material bag into a stirrer, adding a proper amount of water into the stirrer, and stirring until the mixture is uniformly stirred into paste;

(3) adding a curing agent after the pasty plastic bag is solidified, and stirring again until the pasty plastic bag is solidified into blocks;

s2, smashing plastic bags:

(1) dehydrating the plastic bags solidified into blocks in the step S1;

(2) putting the dehydrated massive plastic bags into a crusher to be crushed into powder;

(3) vibrating and separating by using a vibrating screen to obtain powder plastic particles with the particle size of less than or equal to 230 meshes;

s3, soaking plastic particles:

(1) putting the powder plastic particles with the particle size of less than or equal to 230 meshes into a degradation tank for degradation treatment;

(2) pouring degradation liquid into the degradation tank, wherein the amount of the degradation liquid needs to be larger than that of the powder particles;

(3) maintaining the temperature in the degradation tank between 45 ℃ and 75 ℃, and soaking for 3-5 days;

s4, degrading plastic particles:

(1) adding the raw material soaked in the S3 into a fermentation tank for fermentation and degradation;

(2) adding suspended bacteria liquid into the fermentation tank, and fermenting for 30 days while keeping the temperature of the fermentation tank at 25-40 ℃;

s5, recycling the plastic bag raw materials:

(1) collecting degradation mixed liquor in the fermentation tank in S4;

(2) primarily dehydrating the degraded mixed solution, and then extruding and dehydrating to obtain a recyclable secondary raw material;

(4) and (4) recycling the secondary raw materials.

2. The method for performing fractional degradation treatment on a plastic bag according to claim 1, wherein the curing agent in step S1 is gypsum water.

3. The method of claim 1, wherein the step S2 is repeated once for the powdered plastic particles ≧ 230 meshes obtained in the step S2.

4. The method for graded degradation treatment of plastic bags according to claim 1, wherein the degradation liquid in S3 comprises the following raw materials in parts by weight: 5-17 parts of calcium hydroxide, 4-9 parts of mannitol, 5-19 parts of ammonium bicarbonate, 5-12 parts of glycerol, 8-20 parts of ammonium chloride and a proper amount of water.

5. The method for graded degradation treatment of the plastic bags according to claim 1, wherein the suspension liquid in the S4 comprises the following raw material components in parts by weight: 12-25 parts of mucor rouxii, 6-18 parts of nocardia asteroides, 10-17 parts of aspergillus tubingensis, 3-16 parts of pseudomonas aeruginosa, 9-18 parts of rhodococcus rhodochrous, 19-28 parts of aspergillus flavus and 30-49 parts of culture medium.

Technical Field

The invention relates to the technical field of environment-friendly plastic bags, in particular to a graded degradation treatment method of a plastic bag.

Background

At present, plastic films and plastic film products, such as plastic bags and woven bags, are widely used in production and life of people, due to the thin, firm and convenient carrying of the plastic bags and woven bags, instrument plastic bags, packaging plastic bags, agricultural plastic films, industrial plastic films, plastic woven bags and other articles which are popular with people are generally manufactured, however, the objects have two sides, and the plastic film products are generally used as household garbage to be discarded, and the plastic products are not rotten and deformed at normal temperature, so that the garbage is difficult to treat, a lot of troubles are brought to production and life of people, and pollution is caused to ecological environment. In order to treat the white pollution, some people use the waste plastics to produce gasoline or liquid fuel, and some people use the waste plastics to produce plastic particles to attempt to recycle. However, because of the complex technology and high cost, the methods are not popularized and applied. The current disposal method is to incinerate or land fill the garbage together with the domestic garbage. The treatment method wastes valuable chemical resources, but also produces toxic gas and pollutes air to influence the health of people due to incineration, pollutes soil and water sources for landfill, and is very unfavorable for the ecological environment.

Therefore, a degradation method which does not pollute the environment and can treat the plastic bag is urgently needed.

Disclosure of Invention

The invention aims to provide a method for degrading a plastic bag in multiple times, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a graded degradation treatment method of plastic bags comprises the following steps:

s1, collecting plastic bags:

collecting waste plastic bags, breaking the plastic bags, cleaning and drying the plastic bags after the bag breaking treatment, and then cutting the plastic bags in a cutter;

putting the chopped crushed material bag into a stirrer, adding a proper amount of water into the stirrer, and stirring until the mixture is uniformly stirred into paste;

adding a curing agent after the pasty plastic bag is solidified, and stirring again until the pasty plastic bag is solidified into blocks;

s2, smashing plastic bags:

dehydrating the plastic bags solidified into blocks in the step S1;

putting the dehydrated massive plastic bags into a crusher to be crushed into powder;

vibrating and separating by using a vibrating screen to obtain powder plastic particles with the particle size of less than or equal to 230 meshes;

s3, soaking plastic particles:

putting the powder plastic particles with the particle size of less than or equal to 230 meshes into a degradation tank for degradation treatment;

pouring degradation liquid into the degradation tank, wherein the amount of the degradation liquid needs to be larger than that of the powder particles;

maintaining the temperature in the degradation tank between 45 ℃ and 75 ℃, and soaking for 3-5 days;

s4, degrading plastic particles:

adding the raw material soaked in the S3 into a fermentation tank for fermentation and degradation;

adding suspended bacteria liquid into the fermentation tank, and fermenting for 30 days while keeping the temperature of the fermentation tank at 25-40 ℃;

s5, recycling the plastic bag raw materials:

collecting degradation mixed liquor in the fermentation tank in S4;

primarily dehydrating the degraded mixed solution, and then extruding and dehydrating to obtain a recyclable secondary raw material;

and (4) recycling the secondary raw materials.

In a preferred embodiment of the present invention, the curing agent in step S1 is gypsum water.

In a preferred embodiment of the present invention, when the powdered plastic particles obtained in step S2 are not less than 230 mesh, the operation of step S2 is repeated once.

As a preferable technical scheme of the invention, the degradation liquid in S3 comprises the following raw materials in parts by weight: 5-17 parts of calcium hydroxide, 4-9 parts of mannitol, 5-19 parts of ammonium bicarbonate, 5-12 parts of glycerol, 8-20 parts of ammonium chloride and a proper amount of water.

As a preferred technical scheme of the invention, the suspended bacterium solution in S4 comprises the following raw material components in parts by weight: 12-25 parts of mucor rouxii, 6-18 parts of nocardia asteroides, 10-17 parts of aspergillus tubingensis, 3-16 parts of pseudomonas aeruginosa, 9-18 parts of rhodococcus rhodochrous, 19-28 parts of aspergillus flavus and 30-49 parts of culture medium.

Compared with the prior art, the invention has the beneficial effects that: according to the graded degradation treatment method for the plastic bag, disclosed by the invention, through synergistic compounding of the degradation liquid and the suspension liquid, macromolecules of the plastic can be effectively degraded into small molecules, so that the degraded plastic molecules can be recycled for the second time on the premise of not polluting the environment, and a new environment-friendly way is provided for white pollution treatment.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.