Method for producing degradable plastics by using activated sludge

Abstract

The invention relates to a method for producing degradable plastics by using activated sludge, which comprises the following steps: 1) adding the following substance components in parts by weight into a mixing machine and uniformly mixing: 25-45 parts of activated sludge powder, 15-35 parts of high molecular material, 10-25 parts of fiber powder, 5-15 parts of activated carbon powder, 10-20 parts of adhesive and assistants, wherein the assistants comprise sodium stearate, coupling agent and compatilizer; the mass of the sodium stearate is 2% of that of the activated carbon powder; the mass of the coupling agent is 1% of that of the activated carbon powder; and the mass of the compatilizer is 3-5% of the total mass; and 2) plastifying and extruding the mixture obtained in the step 1) through a single screw extruder, granulating, and performing secondary processing to obtain the biodegradable plastics. The method uses wastes in life, sludge and straws, as the raw materials, realizes reutilization of the wastes, and avoids secondary pollution brought by the existing sludge treatment method; and the obtained plastics can be completely degraded to serve as a fertilizer for improving soil. Thus, the method has the characteristics of low carbon, environment friendliness, simple process, high production efficiency and low cost.

Description

technical field

[0001] The invention relates to a method for producing degradable plastics by using activated sludge as the main material, in particular to sewage treatment, waste utilization, and production of environmentally friendly materials. Background technique

[0002] With the development of economy and society, more and more domestic and industrial wastewater discharges have seriously affected my country's water environment, especially the increasing amount of sludge. According to statistics, the amount of sludge at the bottom of Taihu Lake is 67 million cubic meters, and the Pearl River Delta It has an area of ​​80 million cubic meters, which will affect water quality and shipping. In the past, the sludge discharge method was to transport the sludge to the garbage station for natural weathering, which would pollute the air again and waste material and financial resources.

[0003] In the past, the sludge generated in the sewage project was disposed of by stacking or...

Examples

Embodiment 1

[0035] First, add each component material into the high-speed mixer according to the following proportions by weight, heat and stir, and stir evenly after 2 hours;

[0036]

[0037] Auxiliaries: including sodium stearate, coupling agent and compatibilizer, wherein, sodium stearate is 2% of the mass of activated carbon powder; coupling agent is 1% of the mass of activated carbon powder; compatibilizer is 3% of the total mass %.

[0038] Then, the mixture obtained in step 1) is plasticized and extruded through a single-screw extruder, granulated and processed through secondary processing, including injection molding, blown film molding, extrusion molding, etc. to obtain biodegradable plastics, ventilated and cooled After drying, the required degradable plastic products can be made.

[0039] The activated sludge powder used should be the sludge powder that has been domesticated by gradient dynamic cultivation and fermented and dried, because it is rich in polyhydroxyalkanoate...

Embodiment 2

[0053] First, add each component material into the high-speed mixer according to the following proportions by weight, heat and stir, and stir evenly after 2 hours;

[0054]

[0055] Auxiliary agent: comprise sodium stearate, coupling agent and compatibilizer, wherein, sodium stearate is 2% of the quality of activated carbon powder; Coupling agent is 1% of the quality of activated carbon powder; Compatibilizer is the total amount of each component Between 5% of the mass.

[0056] Then, the mixture obtained in step 1) is plasticized and extruded by a single-screw extruder, granulated and processed through secondary processing, that is, injection molding, blown film molding, extrusion molding, etc. to obtain biodegradable plastics, ventilated, cooled and dried After that, the desired degradable plastic products can be made.

[0057] The activated sludge powder used should be the sludge powder that has been domesticated by gradient dynamic cultivation and fermented and dried, ...

Embodiment 3

[0071] First, add each component material into the high-speed mixer according to the following proportions by weight, heat and stir, and stir evenly after 2 hours;

[0072]

[0073] Auxiliary agent: comprise sodium stearate, coupling agent and compatibilizer, wherein, sodium stearate is 2% of the quality of activated carbon powder; Coupling agent is 1% of the quality of activated carbon powder; Compatibilizer is the total amount of each component 4% of mass.

[0074] Then, the mixture obtained in step 1) is plasticized and extruded through a single-screw extruder, granulated and processed through secondary processing, including injection molding, blown film molding, extrusion molding, etc. to obtain biodegradable plastics, ventilated, cooled and dried After that, the desired degradable plastic products can be made.

[0075] The activated sludge powder used should be the sludge powder that has been domesticated by gradient dynamic cultivation and fermented and dried, becaus...

technical field

[0001] The invention relates to a method for producing degradable plastics by using activated sludge as the main material, in particular to sewage treatment, waste utilization, and production of environmentally friendly materials. Background technique

[0002] With the development of economy and society, more and more domestic and industrial wastewater discharges have seriously affected my country's water environment, especially the increasing amount of sludge. According to statistics, the amount of sludge at the bottom of Taihu Lake is 67 million cubic meters, and the Pearl River Delta It has an area of ​​80 million cubic meters, which will affect water quality and shipping. In the past, the sludge discharge method was to transport the sludge to the garbage station for natural weathering, which would pollute the air again and waste material and financial resources.

[0003] In the past, the sludge generated in the sewage project was disposed of by stacking or...

Examples

Embodiment 1

[0035] First, add each component material into the high-speed mixer according to the following proportions by weight, heat and stir, and stir evenly after 2 hours;

[0036]

[0037] Auxiliaries: including sodium stearate, coupling agent and compatibilizer, wherein, sodium stearate is 2% of the mass of activated carbon powder; coupling agent is 1% of the mass of activated carbon powder; compatibilizer is 3% of the total mass %.

[0038] Then, the mixture obtained in step 1) is plasticized and extruded through a single-screw extruder, granulated and processed through secondary processing, including injection molding, blown film molding, extrusion molding, etc. to obtain biodegradable plastics, ventilated and cooled After drying, the required degradable plastic products can be made.

[0039] The activated sludge powder used should be the sludge powder that has been domesticated by gradient dynamic cultivation and fermented and dried, because it is rich in polyhydroxyalkanoate...

Embodiment 2

[0053] First, add each component material into the high-speed mixer according to the following proportions by weight, heat and stir, and stir evenly after 2 hours;

[0054]

[0055] Auxiliary agent: comprise sodium stearate, coupling agent and compatibilizer, wherein, sodium stearate is 2% of the quality of activated carbon powder; Coupling agent is 1% of the quality of activated carbon powder; Compatibilizer is the total amount of each component Between 5% of the mass.

[0056] Then, the mixture obtained in step 1) is plasticized and extruded by a single-screw extruder, granulated and processed through secondary processing, that is, injection molding, blown film molding, extrusion molding, etc. to obtain biodegradable plastics, ventilated, cooled and dried After that, the desired degradable plastic products can be made.

[0057] The activated sludge powder used should be the sludge powder that has been domesticated by gradient dynamic cultivation and fermented and dried, ...

Embodiment 3

[0071] First, add each component material into the high-speed mixer according to the following proportions by weight, heat and stir, and stir evenly after 2 hours;

[0072]

[0073] Auxiliary agent: comprise sodium stearate, coupling agent and compatibilizer, wherein, sodium stearate is 2% of the quality of activated carbon powder; Coupling agent is 1% of the quality of activated carbon powder; Compatibilizer is the total amount of each component 4% of mass.

[0074] Then, the mixture obtained in step 1) is plasticized and extruded through a single-screw extruder, granulated and processed through secondary processing, including injection molding, blown film molding, extrusion molding, etc. to obtain biodegradable plastics, ventilated, cooled and dried After that, the desired degradable plastic products can be made.

[0075] The activated sludge powder used should be the sludge powder that has been domesticated by gradient dynamic cultivation and fermented and dried, becaus...

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