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 Recently, Changsha (the capital of Hunan Province) Wet Garbage Transfer Station, with its equipment, processes and technologies provided by Infore Environment Technology Stock Co., Ltd. (Abb: Infore Enviro), has been run to dehydrate and transfer the city's wet garbage and kitchen waste.

 It is reported that the Station is China's first ultra-large centralized transfer project of wet garbage and kitchen waste. Covering an area of 3,900 square meters, the Station each day transfers 1,600 tons of refuse, including 1,200 tons of wet waste and 400 tons of kitchen waste.

 

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Changsha Wet Garbage Transfer Station

 

Pioneer Technology in China, Achieving High Dehydration Rate

 The Station's transfer system is composed of garbage bag-breaking machines, waste presses, semi-trailer transfer trucks and other equipment. Pioneering the mode of wet waste dehydration, reduction and transfer in China, its press system adopts the combined process of "fully crushing and horizontally pressing" to get wet waste pressed, dehydrated, compressed, and transported to the waste incinerator by semi-trailer transfer truck. 

"The wet waste includes vegetable leaves, peels, eggshells, tea residue, bones, animals' offal, fish scales, tree leaves, weeds and so on, which come from home kitchens, dining rooms, restaurants, canteens, markets and other places. The waste has very high moisture content, " said the person in charge of the Infore Enviro project. In processing wet waste, the key is the bag breaking technique. Only after all the garbage's bags are broken can the waste be horizontally pressed and achieve more than 15% of dehydration rate, and thus meet Changsha's standard for wet garbage processing.

 

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Wet garbage transfer processing system

 

Another system of the Station, kitchen residue transfer system, consists of the vertical direct-pressure compressor, garbage bin positioner, garbage bin and removable garbage truck, and utilizes the new process of "combining vertical direct-pressure trucks with hook arm trucks" to transfer dehydrated refuse and incinate it at last.

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Kitchen residue transfer processing equipment

 

Double Protections to Comprehensively Remove Dust and Odor

During collection and transportation, rubbish, which is corroded and fermented after a period of time, can produce a certain odor. The Changsha project has many innovations in deodorizing waste during transfer.

In the transfer system for wet waste, the joint of horizontal press and locomotive has been equipped with the fully closed sewage collection system, making it impossible for the sewage and odor to get leaked during transfer. In addition, in the ktichen waste transfer system, vertical waste bins are equipped with the single-sided door. Its good overall rigidity and full closure ensure that there is no leakage when transferring rubbish.

Apart from strong closure of the equipment itself, the Station's discharge hall, discharge port and transfer hall all have introduced the negative-pressure wind-drawing dedusting and deodorization system and the spray deodorization system to remove dust and odor in an across-the-board way.

 

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Spray deodorization system

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Negative-pressure wind-drawing dedusting and deodorization system

 

Intelligent and Efficient Digital Centralized Control

Furthermore, the Station is intelligent and highly automated. It has established the digital centralized control center, integrating systems such as the system of waste compression, traffic command, intelligent weighing and dedusting and deodorization and so on, managing sanitation operations in a systematic, intelligent and highly efficient way.

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Digital centralized control center

 

In recent years, with accelerated implementation of the waste classification system across China, efforts to categorize rubbish have been made in more and more places, and begun to show results. It is expected that the industry of wet garbage transfer and processing has a promising future. The Station in Changsha adopts a number of new technologies and processes, initiating a completely new mode of transferring and processing wet garbage. It will become a model in the field of collecting and transferring wet garbagein China, and a new highlight in waste classification and processing.