The most popular way to turn waste paper into trea

2022-07-31
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The way to turn waste paper into treasure

release date: Source: 91 recycling

in the process of industrial papermaking, raw materials are indispensable. Among the many raw materials for papermaking, Sometimes they use waste paper "The automobile business accounts for a large proportion of the overall sales of aoshengde. The recycling rate of waste paper in China has increased from 39.4% to 48.5%, and the total recycling amount has exceeded 50million tons, reaching more than 90% of the total recoverable amount at present. The utilization rate of waste paper has remained at about 70%. Today, we go into waste paper recycling and look at the relevant ways of recycling waste paper.

making recycled gold and silver cardboard from waste paper

this is the most widely used waste gold and silver cardboard Approach. It can be used not only to make recycled gold and silver cardboard, but also to make recycled paper

a French paper company has successfully developed a new process for paper recycling. This new process includes four processes: deinking, purification of paper fiber, absorption of ink and impurities, and then papermaking

the specific process is as follows: deinking technology is selected according to the type of ink; The paper fiber and soap deinking agent are sent to the deinking chamber composed of two chambers, so that the ink and impurities float to the surface with the foam and are sucked away by the suction device; The purified fiber pulp is concentrated to 15%. By heating, the paper fiber is expanded and bleached to give the recycled paper a sense of luster; Finally, the high concentration pulp is fed into the papermaking equipment to produce recycled paper with the same whiteness as the new paper

using waste paper to produce phenolic resin

Japanese paper company has successfully studied a new technology to dissolve waste paper in phenol to produce phenolic resin. Because phenol is combined with low molecular weight cellulose and hemicellulose, the strength of the phenolic resin is higher than that of the product made from phenol and acetaldehyde, and the heat deformation temperature is 10 ℃ higher than that of the previous phenolic resin. In production, old newspapers and office waste paper can be used as raw materials, but the cost of using office waste paper as raw materials is low, only half of that of using old newspapers

household appliances should be made by experimenting with waste paper in the full section of steel

in Singapore and other places, people use waste paper raw materials such as old newspapers, old books and periodicals to roll into a round slender stick, wrapped with plastic paper, and manually weave carpets, cushions, bags, cat nests, door curtains, even tea tables, beds and other household appliances. During production, different patterns can be made according to different shapes of various household appliances, and then decorated with colors, so that the household appliances produced are practical and beautiful

using waste paper to press glued cardboard

under the condition of 80 ℃, the former Czechoslovak scientific and technological personnel used five layers of waste gold and silver cardboard and synthetic resin to jointly press a kind of glued cardboard. Its compressive strength is more than twice that of ordinary cardboard. The packing box made of this kind of glued cardboard can use nails and screws, and can install bearing rollers. Its firmness is almost the same as that of the packing box made of plywood

use waste paper to mold asphalt corrugated board

the scientific and technological personnel of the Central Institute of architecture of India use waste gold and silver cardboard, cotton yarn, coconut fiber and asphalt as raw materials to mold and press asphalt corrugated board, a new building material. The asphalt corrugated board has the advantages of good heat insulation performance, impermeability, portability, low cost, uneasy combustion and corrosion resistance

recover methane from waste paper

experts from lundau University in Sweden beat the waste gold and silver cardboard into a slurry, and then add an aqueous solution of anaerobic microorganisms that can decompose organic matter to the slurry; Then, it is transferred to the reaction furnace, where the cellulose, methanol and carbohydrates in the waste pulp liquid are transformed into methane; The fuel methane can be obtained by removing the wood extracts with enzymes

use waste paper to improve soil quality

in some pastures in Alabama, the soil is hardened and barren in some places. James Edwards, a soil expert in the state, adopted the method of mixing scrap paper with chicken manure and the original soil to improve the soil quality of the pasture according to the characteristics that waste paper will not decay and deteriorate quickly in the soil. The proportion is: paper scraps 40%, chicken manure 10% and original soil 50%

in this way, under the action of bacteria in the base fertilizer of chicken manure, waste paper can rapidly decay and deteriorate, making the soil become soft and abnormal within 3 months. It is not only suitable for the production of grass, making the grass grow vigorously, but also for the cultivation of soybean, cotton, vegetables and other crops, with a high yield; At the same time, it will not have any side effects on the pasture land. After two years, if these lands are supplemented with new scrap paper and chicken manure, the soil will become more fertile and loose

using waste paper to cultivate Pleurotus ostreatus. The specific method is as follows: treat the waste paper into fragments, soak it in water for 72 hours, remove the printing and dyeing materials and dust, and then break up the small pieces of paper; Then, mix the waste paper with the cut Ma Yingdan at the ratio of 1:2, and put it into the sterilized wooden shallow basin, which is generally 5050x15 cm, and supply water and additional cellulose to the basin; After inoculating the bacteria, cover the wooden basin with plastic film and put it into the culture room at 25 ℃. After 34 days of mycelial development, the covering film can be removed and moved to the collection room at 20 ℃; After another 20 days of growth, mushrooms can be harvested. Generally, it can be harvested continuously for 4 months, and each pot can harvest 1.5kg of mushrooms each time

waste paper is used as bedding in livestock corrals

for a long time, people mostly use hay and saws as bedding in livestock corrals. However, in recent years, the United States and Western European countries have used waste gold and silver cardboard instead. The cattle, pig and chicken farms in the United Kingdom use waste paper as bedding in the fence, and the effect is better. The average weight of each chicken can be increased by 7.9% by laying waste paper in the broiler bar from the time of hatching to the time of slaughter. For every 1000 broilers, only 192kg of waste paper scraps need to be laid. Compared with the traditional bedding hay and sawdust, the waste gold and silver cardboard and paper scraps are relatively hygienic. They do not contain poisons such as tannin in sawdust, nor do they contain residues of chemical pesticides common in rice straw and rice husk, so there is no source of disease. At the same time, the moisture content is low, and the heat insulation performance is better than other materials, especially suitable for the growth and development of chicks and newborn babies

processing waste paper into cattle and sheep feed

countries such as the United States, the United Kingdom and Australia have all developed a good method to process waste paper into cattle and sheep feed. Larry Berger, an animal nutritionist at the University of Erie in the United States, cut up the old newspaper, add water and 2% hydrochloric acid, and then boil it for 2 hours, so that the cellulose will decompose and break under the action of high temperature and acid, and then add it into the feed, and use a micrometer to select qualified steel balls for replacement; (3) The error of the indentation measuring device is too large to feed cattle and sheep, and the proportion of addition is 20%~40%. Cattle farms and sheep farms in Britain can feed cattle and sheep by cutting the waste paper into thin strips or kneading it into small paper balls after a little treatment, and then adding a small amount of nutrients. After eating, cattle and sheep can gain 1/3 more weight than ordinary feed. Australian scientists crushed the waste paper, mixed it with an appropriate amount of linseed oil and honey, and made it into pellet feed to feed cattle and sheep, which can make them grow fat and strong

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