CN106638090A

CN106638090A - Straw biological pulping method with advantages of being free from pollution, high in pulp yield and high in paper stiffness

Info

Publication number: CN106638090A
Application number: CN201611022348.6A
Authority: CN
Inventors: 马丰仓; 李宜甫
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-11-21
Filing date: 2016-11-21
Publication date: 2017-05-10

Abstract

In order to solve the problems of a traditional straw pulping method that as most of straw pulp are required to be made by strong alkali and other chemical agents through high-temperature and high-pressure cooking, the pulp yield is low (about 30 percent), the energy consumption is high, the water pollution is severe, and the enterprise economic benefits are poor, the invention provides a straw biological pulping method with the advantages of being free from pollution, high in pulp yield and high in paper stiffness. The straw biological pulping method comprises the following steps: sampling from digestive systems of mules and horses as well as other herbivorous domestic animals, screening, separating and degrading bacterial strains of straws; screening, separating and degrading carbohydrate bacterial strains from yeasts, and making into strains through culture and amplification; adding a proper amount of warm water into the strains as well as enzymes, uniformly mixing, uniformly stirring with the straws, storing and fermenting under normal temperature and atmospheric pressure; replacing high-temperature and high-pressure strong alkali with microorganisms for cooking; consuming and removing non-pulped organic matters through solid fermentation, so that a huge sewage disposal system is replaced. Therefore, the cost is low, and the environment is protected. Corrugated paper made by pulp prepared by the method is high in stiffness; when cartons are made for fruit package and are stored in a refrigerator, carton piles are difficult to collapse; therefore, the straw biological pulping method is welcomed by fruit farmers.

Description

A kind of high straw biological pulping process of pollution-free high slurry yield paper sheet stiffness

Technical field

The present invention is a kind of method that utilization biological inoculum high-efficiency cleaning produces paper pulp.

Background technology

Traditional straw pulping process, great majority are required for adding the chemical agent Jing High Temperature High Pressure steaming and decoctings such as highly basic to be obtained, Slurry yield is low（About 30%）, account for lignin, hemicellulose, pectin of straw quality 70% etc. and dissolve in water, produce a large amount of COD poles The high and night containing residual alkali.Process that this waste water technology difficulty is big, consumption costs is more, Business Economic Benefit is poor.We are from mule The careless domestic animal digestive system sampling of the food such as horse, the bacterial strain of screening and separating degrading straw；The bacterial strain of screening and separating degraded saccharide in Cong Qu, Strain is made in Jing culture amplifications.Add appropriate warm water to mix strain, enzyme, mix thoroughly, store with straw, room temperature, normal pressure fermentation.Utilize Microorganism replaces high temperature, high pressure, highly basic steaming and decocting；Removed using solid fermentation consumption and do not replaced at huge sewage into slurry Organic substance Reason system.Thus low cost, environmental friendliness.This method must starch made by corrugated paper deflection it is high, make packed in cases fruit and exist Freezer storage is not easy stack collapse, deep to be welcome by orchard worker.

The content of the invention

. the preparation of strain：

Pretreatment → the enrichment culture of collection of specimens → specimen material → strain primary dcreening operation → strain secondary screening → Performance Testing → strain Preservation

(1) sample from mule and horse digestive system He taking appropriate amount of sample in Qu；

(2) Pretreated sterilized water is sufficiently mixed with sample and makes bacteria suspension；

(3) strain primary dcreening operation applies selection pressure partition method i.e. using different types of microorganism its growth and breeding to environment and battalion Foster requirement is different, such as temperature, pH, osmotic pressure, oxygen, carbon source, nitrogen source, manual control these conditions, is allowed to beneficial to target Growth of microorganism, and it is unfavorable for the existence of other kind of quasi-microorganism, make purpose strain dominant to reach. and it is able to sharp separation The purpose of purification；

(4) strain secondary screening is that Pure strain separation obtains single bacterium colony using line partition method, isolation by dilution method purification process；

(5) crushed stalk, hot-water extraction can not be mixed into the material of slurry as substrate according to flat-plate bacterial colony biochemical reaction bacterium In plating medium, make culture medium muddy.Can decompose substrate microorganism will periphery of bacterial colonies produce transparent circle, circle it is big The little initial reaction bacterial strain using substrate ability.The strong bacterial strain of metabolism substrate ability is purpose bacterial strain；

(6) bacterial strain carries out small-sized fermentation test using the culture medium and condition of culture close with production by the capacity of triangular flask, In the hope of being suitable for commercial production strain；

(7) freeze-drying is preserved after strain addition cryoprotective agent, and the moisture in the cell suspension for freezing is made at reduced pressure conditions Distillation, is dried culture.This method preservation of bacteria strain 3 years will not devitalization.And it is freeze-dried after bacterial strain need not be freezed Preservation, is easy to store, transports.

. stalk pretreatment by straw dedusting, be crushed to 2cm or so.

. straw presses 1000 with strain:1 ratio mix homogeneously, normal temperature and pressure, the compacting of heap heap, overlay film sealed fermenting 5 to 7 days.

. vapor heat sterilization.

. screw extrusion, dehydration of squeezing the juice, solid-liquid separation, water is reused Jing after processing.

. dense mill, the grinding of highly concentrated mill in solid Jing is discongested, is screened into slurry, and slurry yield reaches 90%（Aqueous straw is converted into absolutely It is dry）Left and right, economic benefit is increased substantially, and water consumption is greatly lowered, and ton slurry water is down to 6 tons or so.Into having in water Machine thing thing is also greatly lowered.

. water process discongests the waste water Jing flocculation sediments of process generation, and 70% direct reuse is returned after the process of 30% biological oxidation With hence without sewage discharge.

. the sludge that Treatment of Sludge is flocculated Jing after technical finesse, as tail slurry（Fiber fines）Into head box online Papermaking, hence without the discharge of sludge pollution thing.

Description of the drawings

Accompanying drawing 1 is the process chart with corn straw as raw material production paper pulp.

Specific embodiment

The corn straw Jing stem and leaf of example 1. separates, is crushed to 2cm or so, adds strain（One thousandth）, mix, heap heap compacting 25 ~ 35 DEG C of overlay film sealed fermentings 5 to 7 days, vapor heat sterilization, screw extrusion, dehydration of squeezing the juice.Reuse after water process, Gu Dense mill, the grinding of highly concentrated mill in body Jing is discongested, is screened into slurry, and slurry yield reaches 90% or so.Into the Organic substance thing in water also significantly Degree is reduced, and discongests the waste water Jing flocculation sediments of process generation, 70% direct reuse, reuse after the process of 30% biological oxidation, thus is not had There is sewage discharge.The sludge for flocculating Jing after technical finesse, as tail slurry（Fiber fines）Into head box surf the Net papermaking, because Without the discharge of sludge pollution thing.

The broomcorn straw Jing stem and leaf of example 2. separates, is crushed to a 2cm left sides, adds strain（One thousandth）, mix, heap heap compacting 25 ~ 35 DEG C of overlay film sealed fermentings 5 to 7 days, vapor heat sterilization, screw extrusion, dehydration of squeezing the juice.Water is reused Jing after processing, Gu Dense mill, the grinding of highly concentrated mill in body Jing is discongested, is screened into slurry, and slurry yield reaches 90%.Also significantly drop into the Organic substance thing in water It is low, discongest the waste water Jing flocculation sediments of process generation, 70% direct reuse, reuse after the process of 30% biological oxidation, hence without dirt Water is discharged.The sludge for flocculating Jing after technical finesse, as tail slurry（Fiber fines）Into head box online papermaking, thus do not have There is sludge pollution thing to discharge.

Claims

1. strain is taken from mule and horse digestive system He taking appropriate amount of sample in Qu.

2. it is sufficiently mixed with sterilized water and sample and makes bacteria suspension.

3. strain primary dcreening operation applies selection pressure partition method i.e. using different types of microorganism its growth and breeding to environment and battalion Foster requirement is different, such as temperature, pH, osmotic pressure, oxygen, carbon source, nitrogen source, manual control these conditions, is allowed to beneficial to target Growth of microorganism, and it is unfavorable for the existence of other kind of quasi-microorganism, make purpose strain dominant to reach. and it is able to sharp separation The purpose of purification.

4. strain secondary screening is that Pure strain separation obtains single bacterium colony using line partition method, isolation by dilution method purification process.

5. can not be into the material of slurry as substrate using crushed stalk, hot-water extraction according to flat-plate bacterial colony biochemical reaction bacterium In being mixed in plating medium, make culture medium muddy, can decompose the microorganism of substrate will produce transparent circle in periphery of bacterial colonies, circle The size initial reaction bacterial strain using substrate ability, the strong bacterial strain of metabolism substrate ability is purpose bacterial strain.

6. bacterial strain carries out small-sized fermentation test using the culture medium and condition of culture close with production by the capacity of triangular flask, In the hope of being suitable for commercial production strain.

7. freeze-drying is preserved after strain addition cryoprotective agent, and the water in the cell suspension for freezing is made at reduced pressure conditions Decilitre China, is dried culture, this method preservation of bacteria strain 3 years will not devitalization, and it is freeze-dried after bacterial strain need not carry out it is cold Freeze preservation, be easy to store, transport.

8. straw dedusting, be crushed to 2cm or so, with strain press quality 1000:1 ratio mix homogeneously, normal temperature and pressure, heap heap pressure It is real, overlay film sealed fermenting 5 to 7 days.

9. vapor heat sterilization.

10. screw extrusion, dehydration of squeezing the juice, solid-liquid separation, water is reused Jing after processing.

Dense mill, the grinding of highly concentrated mill in 11. solid Jing is discongested, is screened into slurry.

The 12. waste water Jing flocculation sediments for discongesting process generation, 70% direct reuse, reuse after the process of 30% biological oxidation, thus do not have There is sewage discharge.

13. sludge for flocculating Jing after technical finesse, as tail slurry（Fiber fines）Into head box online papermaking, thus do not have There is sludge pollution thing to discharge.