Garbage trucks collect the garbage at various points, transport it to the nearest garbage compression station for processing, and then transport it to a unified processing center. Downstairs of a commercial building on Kaixuan Road, Jianggan District, Hangzhou, a garbage truck is using a rear lifting frame to send two barrels of other garbage into the on-board garbage bin. A camera is erected obliquely above the rear lift frame, which goes around the cab, and there is an extra display screen between the driver's seat and the passenger's seat. "There is no sorting garbage truck." Sanitation worker Wang said, they put the garbage collected from the street into the sanitation truck, and then pulled it to the garbage transfer station. "There is no way to divide, there is too much garbage, too mixed, and there is a lot of construction waste."
A compactor garbage truck
After manual sorting, crushing and screening, qualified perishable waste enters the fine crusher for further crushing, and then is sent to the biodegradation box for aerobic degradation. After 24 hours, they can be "turned" into nutrient soil for landscaping, Flower planting and soil improvement, etc.
Into the pilot project of domestic waste classification in Erdao District, 27 two-piece domestic waste sorting and placing bins and 1 six-piece domestic waste sorting and placing bins are reasonably distributed in the community. By swiping the score card, the residents fill a bag The perishable garbage of vegetable leaves and leftovers is thrown into the household garbage sorting bin.
The garbage truck is weighed before entering the factory with garbage
Ten minutes later, the bag of perishable garbage was transported to the perishable garbage collection and transportation truck. The next place they will go is the domestic garbage classification transfer and disposal station in Erdao District on the Sitong Road.
Clean and tidy, no peculiar smell is the first impression. Entering inside, the perishable waste treatment system including pretreatment system, biodegradation system and gas and water purification system can realize the integration of weighing, feeding, sorting, crushing, screening and degradation of perishable waste. deal with.
The garbage is weighed before entering the factory. The garbage bag is broken open by the bag-breaking machine. The bag of perishable garbage is mixed with a small part of misclassified glass and fabric.
The compactor garbage truck is unloading in the unloading hall
After manual sorting, crushing and screening, qualified perishable waste enters the fine crusher for further crushing, and then is sent to the biodegradation box for aerobic degradation. After 24 hours, they can be "turned" into nutrient soil for landscaping, Flower planting and soil improvement, etc.
The four-channel domestic waste sorting, transfer and disposal station, and part of the glass, fabric, plastic, metal, etc. mixed in it can be recycled, and the non-biodegradable light substances are compressed into solid fuel after entering the baler. The discharged water and gas are discharged after being treated by photocatalytic technology, photolysis spray tower and sewage treatment equipment. Zhang Wei, the technical person in charge of the transfer disposal station, introduced that through these processes, the perishable waste can be reduced by more than 80%, and basically zero landfill. Currently, about 25 tons of perishable garbage can be processed every day. Other waste can be converted into heat and electricity.
If perishable waste can be "transformed" into nutrient soil, then other wastes are more useful and can be converted into electricity and heat, which can be directly used in daily life.
Garbage truck in the garbage station
After simple crushing, the garbage enters the waste product warehouse, and then is sent to the incinerator with a temperature of 850℃~950℃ for incineration treatment. The high temperature can also effectively control the generation of carbon dioxide. The burning allows the garbage to generate electricity and heat.
The electric energy generated by the incineration of garbage can be used by more than 200,000 households each year, and the heat generated can provide heat for the surrounding 1.5 million square meters community in winter.
Garbage is just a misplaced resource. After incineration, the volume of garbage can be reduced by more than 90%, and the weight can be reduced by more than 80%, which can effectively reduce the occupation of land resources.
After incineration, waste can generate electricity and heat, and the remaining slag can be used as building materials. Every day, 2,350 tons of garbage come in. After a series of treatments, only about 180 tons of fly ash are left. After being solidified and stabilized, they are transported to the landfill for harmless landfill.
