Experimental Study On The Impact Of Alkaline Sludge On The Anaerobic Degradation Of Organic Solid Waste

Pure alkali is important basic chemical material,extensively applied to the industry , such as metallurgy , chemical industry , textile , papermaking , medicine , food ,etc. Our country mainly adopts Ammonia alkali method to produce pure alkali at present, and the annual yield is about more than 3 million tons, discharging about more than 600,000 tons of alkali residue at the same time. The annual output of alkali of Qingdao Alkali factory is 500 thousand tons, discharging 100,000 tons of alkali residues every year, plus the store of past years, alkali residue has reached up to the megaton. A great deal of alkali residue has no place to pile up, causing the great pollution of the environment of Jiao Zhou Bay. As for the administration and recycling treatment of the alkali residue, a lot of technological schemes both at home and abroad has been proposed, accumulating abundant experience, but a great deal of drawbacks exist on the economy and technology.With economic development and population's growth, large amount of rubbish is generated, the composition of which is more and more complicated. Among various kinds of method to dispose of the municipal solid waste, landfill is widely used in our country. Compared with other methods, it is economic and convenient to operate, adapted to developing countries with far-flung region but lacking funds, such as our country.The urban sewage treatment plant discharges out a large amount of sludge every day. According to the statistics, the amount of sludge produced by a second-class sewage plant shares about 0.3-0.5% of the total amount of the water treated. If deep treatment processing is carried out, the amount of sludge produced may increase further. In order to maintain normal operation and obtain good treatment result, the sludge produced every day has to be handled in time. According to the situation of our country, landfill method is a kind of choice for compromise to handle the sludge problem for its cheap investment, great capacity and quick effect. In the future,...