Minhang kitchen waste processing center approaches capacity

Expansion is in order for the Minhang kitchen waste processing center as new waste disposal laws come into effect.

Filmed and edited by Ma Xuefeng. Subtitles by Andy Boreham and Wang Xinzhou.

The Minhang kitchen waste processing center was put into use in 2017. Up until now, it has already processed nearly 100,000 tons of garbage, and its daily capacity is around 200 tons.

The whole processing system is divided into five parts: garbage sorting, biochemical fermentation, deep processing, waste water treatment and odor treatment. Processed kitchen waste will become soil conditioner to grow fruit and curb environmental pollution.

The core technology during the process is corrosive acid fertilizer production, which is a kind of rapid fermentation, and some microbial flora will be added to accelerate the decomposition of waste.

Minhang kitchen waste processing center approaches capacity
Ma Xuefeng / SHINE

A worker operates a machine dealing with kitchen waste.

“In the past, there were many other kinds of garbage mixed in with kitchen waste, such as pots, pans, and sometimes even clothes and shoes,” said Lu Changhong, the factory manager. “But after the garbage classification rules were carried out, the amount of other waste has been reduced, and this really helps our work.”

Now, the center processes 220 to 240 tons of garbage every day, which overruns the upper limit and brings some pressure. 

In the future the center will be expanded so that it can deal with all the kitchen waste in Minhang District, and also have some space left for garbage from Changning and Xuhui.

Minhang kitchen waste processing center approaches capacity
Ma Xuefeng / SHINE

A worker at the Minhang kitchen waste processing center.

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