What is the introduction of waste sorting?
Waste sorting
Waste sorting is the process by which waste is separated into different elements.[1] Waste sorting can occur manually at the household and collected through curbside collection schemes, or automatically separated in materials recovery facilities or mechanical biological treatment systems. Hand sorting was the first method used in the history of waste sorting.[2] Waste can also be sorted in a civic amenity site.
If you are looking for more details, kindly visit qunfeng.
Waste segregation is the division of waste into dry and wet. Dry waste includes wood and related products, metals and glass. Wet waste typically refers to organic waste usually generated by eating establishments and are heavy in weight due to dampness. With segregation, each form of waste goes into its category at the point of dumping or collection, but sorting happens after dumping or collection. Segregation of waste ensures pure, quality material. Sorting on the other hand will end up producing impure materials with less quality.
These days, automatic waste segregators are gaining popularity and are already being used in many parts of the world like Australia.
Methods
[edit]Waste is collected at its source in each area and separated. The way that waste is sorted must reflect local disposal systems. The following categories are common:[3]
- Paper
- Cardboard (including packaging for return to suppliers)
- Glass (clear, tintedno light bulbs or window panes, which belong with residual waste)
- Plastics
- Textiles
- Wood, leather, rubber
- Scrap metal
- Compost
- Special/hazardous waste
- Residual waste
Organic waste can also be segregated for disposal:
- Leftover food which has had any contact with meat can be collected separately to prevent the spread of bacteria.
- Meat and bone can be retrieved by bodies responsible for animal waste.
- If other leftovers are sent, for example, to local farmers, they can be sterilised before being fed to the animals.
- Peels and scrapings from fruit and vegetables can be composted along with other degradable matter. Other waste can be included for composting, such as cut flowers, corks, coffee grounds, rotting fruit, tea bags, eggshells and nutshells, and paper towels.
Mechanisms for automated sorting
[edit] See also: Materials recovery facility § Process, and Recycling § SortingAutomation of municipal solid waste sorting process is an active research area.[4] Notable mechanisms for automated sorting include:
- Standardization of products, especially of packaging[5][6][additional citation(s) needed] which are often composed of different materials, in particular materials hard or currently impossible to either separate or recycle together in an automated way.[7]
- Laws related to recyclability, waste management, domestic materials recovery facilities, product composition, biodegradability and prevention of import/export of specific wastes.
- Since around , China,[8] Turkey,[9] Malaysia,[10] Cambodia,[11] and Thailand[12] have banned certain waste imports. It has been suggested that such bans may increase automation[13] and recycling, decreasing negative impacts on the environment.[14]
- Laws related to recyclability, waste management, domestic materials recovery facilities, product composition, biodegradability and prevention of import/export of specific wastes.
- Optical sorting
- Spectral imaging based sorting[4]
- Systems that use hyperspectral imaging and algorithms developed via machine learning[15][16][17]
- Near infrared spectroscopy[18][19]
- X-ray based sorting[4]
- Laser-induced breakdown spectroscopy[4]
- Spectral imaging based sorting[4]
- Eddy current based sorting[4]
By country
[edit]In Germany, regulations exist that provide mandatory quotas for the waste sorting of packaging waste and recyclable materials such as glass bottles.[20]
Want more information on Automated Waste Sorting Equipment Exporter? Feel free to contact us.
Related links:The Best Places to Buy Powder Grinding Machine Mill Online and In-Store
L-Sealers 101
How Can Bright Tank Brewing Elevate Your Craft Beer Experience?
In Denpasar, Bali, Indonesia, a pilot project using an automated collecting machine of plastic bottles or aluminium cans with voucher reward has been implemented in a market.[21]
In India, the government inaugurated the Swachh Bharat Mission ("Clean India Mission") in , a nationwide cleanup effort. Before this national consolidated effort for systematic and total waste management came into common consciousness, many cities and towns in India had already launched individual efforts directed at municipal waste collection of segregated waste, either based on citizen activism and/or municipal efforts to set up sustainable systems.[22]
In Ukraine, people are learning to sort garbage. Garbage is sorted in schools and kindergartens in Khmelnitsky.[23][24]
In the United States, the Environmental Protection Agency reports that the infrastructure for recycling waste has not kept pace with the rate of waste production.[25]
In Australia, Smart Bins have been introduced as a solution for waste management issues that the country faces. The AI-powered smart bin is equipped to segregate recyclables all by itself. Experts also claim that a smart bin like this may also increase waste-recovery rates in the country and help produce better quality recyclable products that will add to Australia's GDP.[26]
Worldwide
[edit]In terms of plastic waste sorting and recycling, an estimated 9% of the estimated 6.3 billion tonnes of plastic waste from the s up to has been recycled and another 12% has been incinerated with the rest reportedly being "dumped in landfills or the natural environment".[27]
See also
[edit]References
[edit]Waste Sorting Brief Introduction
How is waste sorting working
Contents
1 Technical bottlenecks
2 Sorting system
3 Process flow
4 Market analysis
5 Summary
Technical bottleneck
The garbage sorting system is the core of the technology. This system adopts uniform waste feeding, large-size waste automatic sorting system, large-size waste crushing system, bagged waste automatic bag breaking, large organic matter automatic crushing system, and fully enclosed mechanization. After air treatment system, plastic water separation system, high temperature and high pressure hydrolyzed hydrothermal oxidation "hot separation" system for organic matter, municipal solid waste can be sorted into: 1: inorganic matter; 2: sandy soil; 3: organic matter Class 4: Non-recyclable combustibles (if supplemented by simple manual sorting, rigid plastics and rubber can also be separated) 5: Thin film plastics 6: Ferromagnetics;
The sorting purity of the above wastes can reach 85% or more, and the purity of thin film plastics can reach more than 90%, laying a solid foundation for the "recycling and industrialization" of waste processing in the next step.
Mixing is garbage and classification is a resource.
Sorting system
Closed, mechanized waste sorting system
The pre-treatment system can sort the municipal solid waste after processing through processes such as uniform waste feeding, automatic large-scale waste sorting system, automatic waste stripping of bagged waste, automatic crushing of large organic matter, and fully enclosed mechanized air separation system. : Inorganic materials; organic materials, sandy soil; non-recyclable combustible materials; thin film plastics; ferromagnetic materials.
The above wastes can achieve a purity of more than 85%, and the separation rate of film plastic waste can reach more than 90%, laying a solid foundation for the "recycling and industrialization" of waste processing in the next step, and can also make waste The incineration volume is reduced by nearly four-fifths. There is no need to add coal or oil injection. The waste heat generated by the incinerator is provided to the hydrolysis tank to treat organic matter, and the waste is used to treat the garbage. The operating cost savings are considerable.
Process flow
Domestic garbage is transported by garbage trucks. After the platform weighs too much, the garbage trucks enter the garbage truck's rotary workshop to discharge the garbage in the temporary storage room of the garbage, and spray deodorant while discharging. The material is fed to the uniform feeder by the bridge-type double-beam, and the material is conveyed to the large garbage sorter by the uniform feeder. The machine can separate all the large pieces of garbage (sorting rate 99%), separate more than 90% of the sand and soil in the garbage, and 25-35% of organic waste, and it can also remove larger bags. Load more than 90% of the broken bag, and the rest can handle the garbage going to the broken bag crusher. This machine can open all the unopened garbage in the garbage, break up the debris stuck on the plastic, and break the organic matter with a particle size larger than 60mm to less than 600mm.
The rubbish treated by the belt breaking crusher naturally falls to the integrated air separator and meets the flat air flow after rectification. According to the principle of different specific gravity, different falling points, different particle sizes and different components of the garbage after crushing, the municipal solid waste can be separated into ferromagnetic materials (including batteries) through the air separation device, particle separation device and magnetic separation device. , Organic matter, non-recyclable combustibles, film plastics, etc.
The main treatment methods after garbage classification
(1) Organic matter waste is hydrolyzed and hydrothermally oxidized to make fertilizer or dried by incinerator tail gas before incineration.
(2) Sandy soil waste, nutrient soil improved after natural fermentation.
(3) Plastics, recycled or made plastic products or refining heavy oil;
(4) Ferromagnetic materials are mainly recycled;
(5) Non-recoverable combustibles, incineration;
(6) Landfill or brick making of inorganic waste.
Main characteristics of processing technology
(1) Fast: The same day garbage will be processed on the same day to reach Nissan and Nissin.
(2) Harmless: fully enclosed operation, so there is no odor overflow; fast processing, less leachate generation.
(3) Small floor area: one quarter of the compost method and one sixth of the landfill method.
(4) High degree of resource utilization and industrialization: Because the previous sorting and classification are thorough, all recyclable materials are recycled, while reducing the amount of incineration and the amount of waste generated (reduction of nearly four-fifths).
(5) The prospect of the ecological organic fertilizer market is good: fertilizers must be used for green products.
If you are looking for more details, kindly visit Waste Compression System.
3
0
0
Comments
All Comments (0)