Paper waste contains not only visible waste such as iron, stone, plastic, rope, but also small impurities such as printing ink, fine fiber, white clay, paint, sand, pigment, etc. This paper puts forward relevant suggestions and measures.
China has increased its control over the paper industry. How to improve the processing level of paper solid waste has become a key research and practice for papermaking enterprises. For example, most of the components in the deinked sludge can be naturally degraded, but there are some heavy metal components, and the accumulation of these components will cause long-term damage and impact on the environment. There is also a sludge produced by the advanced treatment of papermaking wastewater, that is, a three-stage sludge, which is mainly an impurity produced by chemical flocculation, and has a large amount of components which are difficult to be biodegraded. Although it is difficult to handle, the recycling value is high.
Plastic waste residue to produce plastic particles
The plastic content in the waste residue is high and the degradability is poor. At present, the process of producing plastic particles from papermaking waste has been relatively mature, and has entered the stage of promotion and application. Recycled plastic particles can be used as raw materials for plastics factories, but for some poor quality recycled plastic particles, they cannot be used in the manufacture of plastic products. However, as an organic product, plastic can be refining with such poor quality plastics. Plastic refining technology is also perfect, but if there are too many impurities in papermaking plastics, it will affect the quality of oil and the rate of oil.
Application of alkali recovery white mud
Through the treatment and purification of alkali-recovered white mud, it can produce calcium carbonate filler, reduce its damage and influence on the environment, and create partial profits, saving the cost of paper solid waste disposal. The calcium carbonate in the alkali-recovered white mud can be used for the production of cement raw materials or for the production of wall coatings and waterproof coatings after purification and further processing.
Utilization of deinking sludge
The main components of deinking sludge are kaolin and calcium carbonate, fiber and ink. If the organic matter can be completely burned, and the inorganic materials recovered are used to produce paper filler and coating raw materials, it is an ideal deinking sludge utilization. way. In addition, after the process of surface modification, drying, pulverization and homogenization, the deinked sludge becomes a gray powdery composite filler, which can replace the higher cost wood powder. Adding additives such as coupling agents and modifiers, and using various melt blending techniques to produce various thermal polymer materials. The filler made of waste sludge can be applied to plastic guardrails, asphalt modified fibers for roads, waterproof materials, building formwork, agricultural greenhouse brackets and the like.
For waste and soil improvement
The paper sludge is microbially fermented and can be oxidized and decomposed into humus that is easily absorbed by plants. Therefore, paper solid waste is also used in sludge composting. This application also achieves recycling of paper solid waste, but the treatment efficiency is low. Since paper solid waste contains a large amount of elements such as NPK, it can also be directly used for soil improvement. Practice has proved that the bulk density of the soil using the sludge is reduced, the pH is more stable, and the quality of cultivated land can be effectively improved.
Conclusion
The existing disposal of paper solid waste is mainly based on “waste landfill†and is treated on the surface. In fact, it is “covering the ear and ringing the bell†and “afternoon troublesâ€. The “treatment†brings great side effects and greatly wastes its Its intrinsic value. It should be changed from “disposal†to “productionâ€, treating paper solid waste as “resourcesâ€, implementing “solid waste refining†and turning waste into treasure.
As many people work at home for a long time, many people are beginning to find that sitting on the sofa and looking at a laptop can cause back and neck pain and damage their health.
Standing Computer Table is very helpful to a healthy lifestyle and can solve your sedentary problem.
The ability to switch between sitting and standing during the day allows employees to stand up and move around while continuing to work.
Standing intermittently throughout the day can make your heart healthier and posture better.
Standing Computer Table,Electric Standing Table,Office Standing Table,Office Adjustable Table,Adjustable Table Legs
Suzhou Uplift Intelligent Technology Co., Ltd , https://www.uplift-system.com