Solid waste treatment methods and common equipment sharing

Yichang solid waste treatment system reminds you of some details and commonly used methods and equipment in solid waste treatment.

For some solid wastes, the disposal methods often used by the destruction company include compaction technology, solidification treatment technology, incineration and pyrolysis technology, biological treatment technology, crushing technology and separation technology.

Treatment method of solid waste

1. Compaction technology

Compaction is a pretreatment technology that can reduce the volume of waste, reduce the transportation cost, and extend the landfill life. Compaction is a commonly used pretreatment method for solid waste, such as cars, cans, plastic bottles, and so on. Compaction is usually used first. Compaction is not suitable for solid waste that is suitable for volume reduction treatment. Some wastes that may cause operational problems, such as tar, sludge or liquid materials, Generally, compaction is not suitable.

2. Curing technology

Solidification technology is a harmless treatment process that leads to the addition of solidified base materials to the waste, so that the hazardous solid waste can be fixed or contained in the inert solidified base materials. The treated solidified products should have good impermeability, good mechanical properties, leaching resistance, dry and wet resistance, and freeze thaw resistance. Solidification treatment can be divided into sedimentation, asphalt curing, glass curing, and resin curing according to the different solidified base materials.

3. Incineration and pyrolysis technology

Incineration is a comprehensive treatment process of high-temperature decomposition and deep oxidation of solid waste. The advantage is that a large amount of hazardous waste is decomposed into harmless substances. It has become a new development trend to treat solid waste by incineration and use its heat energy. With this treatment method, solid waste occupies less land and has a large treatment capacity. Most incineration plants are located in large cities with more than 100000 people to protect the environment. It also has an energy recovery system.

4. Biological treatment technology

Biological treatment technology is an effective technical method to solidify waste resources by utilizing the decomposition of microorganisms to make organic solid waste harmless, which can convert organic solid waste into energy, food, feed and fertilizer, and can also be used to extract metal from waste products and residues. It is widely used in composting, biogas production, sugar production from waste cellulose, feed production from waste fiber, bioleaching, etc.

5. Crushing technology

In order to reduce the appearance of waste entering incinerators, landfills, composting systems, etc., solid waste must be crushed in advance. Because of the elimination of large voids, the broken waste is not only uniform in size, but also uniform in texture, and compacted in the process of landfilling. There are many crushing methods for solid waste, mainly including impact crushing, shear crushing, extrusion crushing, friction crushing, etc. In addition, there are special low-temperature crushing and mixed crushing. The solid waste shredder that is more widely used and more effective is the shear shredder. For landfill waste and compost waste, the spiral roller shredder is more effective.

6. Separation technology

Solid waste separation is an important means to realize the recycling and reduction of solid waste. Through separation, the useful ones are fully selected and utilized, and the harmful ones are fully separated; The other is to separate the wastes with different particle sizes. The basic principle of separation is to separate the materials by taking advantage of their differences in some aspects. For example, the magnetic and non-magnetic differences in waste are used for separation; Use the difference of particle size for separation; Use specific gravity difference for separation, etc. According to different properties, various machines can be designed and manufactured to sort solid wastes, including manual sorting, screening, gravity sorting, magnetic sorting, eddy current sorting, optical sorting, etc.

Solid waste treatment equipment

1. Double-shaft shear crusher

Double-axis shear pulverizer processes materials based on the working principle of mutual shearing, tearing and extrusion between knives. According to different material characteristics and production capacity requirements, corresponding knives and cutter body arrangement are configured to effectively improve production efficiency. The equipment adopts the design of "double motors+double reducers", which is characterized by high shearing force, good tearing effect, low noise and good stability,? It is applicable to the crushing of conventional domestic waste and has good crushing effect on soft and hard materials.?

2. Hydraulic coarse crusher

Hydraulic coarse crusher is one of the mainstream crushing equipment with high production efficiency of solid waste crushing. The blade made of imported wear-resistant materials can ensure low consumption and reliability, achieve high power crushing capacity and meet the high reliability of long-term continuous operation. Jeep equipment is designed with low rotational speed and large torque, which has the characteristics of large crushing force, high output, low noise and good stability. It is often used in MSW (municipal domestic waste) disposal, large waste crushing and capacity reduction, resource regeneration, waste incineration pretreatment, waste landfill and other environmental protection fields.

3. European version fine crusher

The European fine crusher is a new and upgraded fine crusher with large capacity crushing bin, unique knife design and pushing device. It has strong medium and fine crushing capacity and can effectively break materials with high hardness and large size. The solid and wear-resistant structural design greatly reduces wear and energy consumption and improves the service life of the whole machine. It is applicable to plastic, paper, wood, fiber, rubber Domestic garbage recycling and treatment, etc.

4. Four-axis crusher

The four-axis crusher has four sets of shear knife rollers, and four sets of shear knife rollers use different knife structures to cooperate with each other. After the material enters the shredding box, it is torn into small pieces by the blades on the four sets of knife rollers. The discharge size of the four-axis crusher is controlled by the screen. After the material is cut once, the material with smaller particle size than the screen hole is discharged from the screen hole at the lower part of the box under the action of gravity and extrusion pressure. The material with larger size than the screen hole is returned to the crushing box for secondary cutting along the inner surface of the screen through the guide of the main cutting knife and the auxiliary cutting knife, and so on, until the material can be discharged from the screen hole.

5. Mobile solid waste crushing station

The mobile solid waste crushing station is based on the advanced crushing technology in North America, integrating the mobile chassis, feeding, crushing, conveying, magnetic separation and other process equipment, and is independently developed and designed. Its design concept is to fully consider the impact of various materials crushing, eliminate the impact of crushing site, environment, foundation, disposal capacity, power and other factors on production, and provide customers with mobile, simple and low-cost crushing equipment; The mobile solid waste crushing station has a built-in diesel engine, which can be produced without external power supply; With its own mobile chassis, it is convenient and fast to move and transfer; Integral hydraulic drive, stable operation; It is an ideal equipment for scattered garbage treatment in the city and suburbs.