Mechanical pulping method for biological bacteria liquid

Abstract

The invention discloses a mechanical pulping method for biological bacteria liquid, and belongs to the field of papermaking and pulping. The main technical problem to be solved is that the waste liquor for pulping pollutes the environment. The method is that: compound bacteria serve as bacterial strains; the compound bacteria comprise white rot fungi, actinomycete, and methane bacteria in a mass ratio of 1-3: 1-3: 1; and the density of the mixed bacterial liquid is 60,000,000/ml. The method comprises the following steps: degrading the raw materials with the mixed bacterial liquid after swelling, thread rolling and extrusion; grinding coarsely; grinding finely; bleaching or not bleaching; and washing the liquid to prepare the pulp. The method is mainly used for pulping herbal materials and has the advantages of no pollution or discharge of waste liquor in the pulping process, recyclable liquid, low production cost and simple process.

Description

technical field [0001] The invention relates to a biological bacteria liquid mechanical pulping method, which belongs to the field of paper pulping. Background technique [0002] Pulping technology: It is the process of removing lignin and pectin and other substances from plant straw, branches, trunks and other materials through degradation (or dissociation) to obtain fibrous substances. Fiber is the main component of papermaking. [0003] Plant straw is mainly divided into fibrous and non-fibrous. Fibers are soft, while non-fibrous substances are hard. Non-fibrous substances are mainly composed of lignin, hemicellulose, pigments, ashes, pectin, silicon and other powdery substances. These non-fibrous substances play a major role in plant straws. Lignin supports the hardness of straws. Pigments are the blood of straws. They help plants absorb nutrients and transfer water. Cellulose is tightly surrounded and dispersed by them. [0004] In the pulping process, to separate th...

AI Technical Summary

Problems solved by technology

The problems in the prior art are: (1) the waste liquid produced in the chemical pulp production pollutes the environment, destroys the land, and pollutes the air; a large amount of sodium hydroxide (caustic soda) is added in the pulping process, and chemical harmful substances are also used in the bleaching process. Elements (chloride ions), the waste liquid produced cannot be fully recycled

(2) High energy consumption, large power consumption and water consumption; a large amount of electricity is used in the entire production process, resulting in a large power consumption

(3) The amount of waste liquid discharge is large; waste liquid that cannot be reused can only be discharged outward

Does not comply with national energy conservation and emission reduction policies

(4) Substances cannot achieve effective recycling

[0007] The main problem existing in pulping production is waste liquid polluting the environment. The current feasible environmental protection new technology can reduce pollution, but cannot eliminate pollution. Large environmental protection equipment can only recover alkali for secondary use, but it increases the cost of the enterprise. Production costs, profits are greatly reduced

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