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Treatment status and technical prospect of food waste and excess sludge
Release time:2017-7-7 17:07:00      Click on the number of times:290

China is a big country with diet, increase and improve the living standards of waste, kitchen waste production in our country is increasing year by year, a large proportion of food waste and some big city has occupied city garbage: Beijing 37%, Tianjin 54%, Shanghai 59%, Shenzhen 57%, Guangzhou 57%. 41% in Ji'nan, Shenyang and even reached 62%. In 2010, daily food waste production in Beijing and Shanghai reached 1200t/d and 1100t/d respectively. The increasing amount of food waste has become a major burden on municipal waste treatment.

Along with the strengthening of national environmental protection efforts, increasing the amount of sewage treatment, resulting in a large number of surplus sludge. According to the analysis report for China sludge disposal market Cheng (2011 Edition), by the end of 2015, China's annual production of dehydrated sludge will reach 2600 * 104m3. Therefore, how to deal with the food waste at the same time, so that the remaining sludge has been dealt with, has become an urgent problem.

With rapid economic development, production of food waste and sludge etc. city organic waste is increasing, how to deal with these wastes has become an urgent problem to be solved. Through the analysis of several advantages and disadvantages and development trend of landfill, compost, feed, sludge incineration, anaerobic fermentation and other alternative technologies, think of food waste and excess sludge fermentation technology is an ideal processing technology, hydrogen production capacity of up to 2.11molH2/mol of hexose.

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