Bio-Waste Processing Project in Gansu, China

Source: Sina News( View article )

Gansu: Restaurant and Kitchen Bio-Waste Project Launched

On March 24th the Lanzhou Restaurant and Kitchen Waste Recycling and Decontamination Project was launched.

On March 26th, reporters learned from the Lanzhou restaurant and kitchen waste treatment plant that, after a series of process including shredding, sand removal, grease separation and anaerobic fermentation, restaurant and kitchen waste will be turned into treasures like biodiesel, bioasphalt, organic foliar spray fertilizer, organic microbial agents and bio-energy, all of the organic components are used up.

According to information, this is Gansu’s first restaurant and kitchen waste recycling project. It uses comprehensive biotechnology methods, wet separation, and wet anaerobic fermentation to maximize processing of the restaurant and kitchen waste, turning it into a renewable resources and energies, making it useful once again.

“After the waste is collected, it is shredded, sand is removed and fats and oils are separated, the remaining organic compounds will be anaerobically fermented to produce methane and biogas residue to generate power. The fats and oils are used to produce things like biodiesel, bioasphalt, liquid fertilizer, and biological agents.” said Boa Lin, the person responsible for the project, “After passing through the various processes, all that remains are some inorganic material, like bottle caps”.

The project can process 200 tons of bio-waste per day, and 73,000 tons annually. After the project is finished it will annually produce 7.69 million cubic meters of methane, 4,200 tons of organic fertilizer, 15.33GW/hours of electricity, 18.9 Mj of heat energy, 4380 tons of industrial oils, and reduce carbon dioxide emissions by 55,000 tons, saving 9,709 tons of common coal.

“This bio waste processing project can truly turn trash into treasure. The electricity and organic fertilizer it produces in one year can supply 100,000 families and 4,200 mu(691 acres) of farm land.”

According to information, the project will be finished by 2015 and will encompass all of Lanzhou’s restaurant and kitchen biowaste disposal, completing the first steps in bio-waste processing and decontamination.