The invention relates to a compound
microorganism bacterium agent used for
sludge reduction, a preparation method and application of the compound
microorganism bacterium agent. The compound
microorganism bacterium agent is a liquid bacterium agent prepared by fermenting denitrified
pseudomonas,
nocardia coralline, candida utilis,
rhodobacter sphaeroides and
aspergillus sojae. According to the invention, the metabiosis action between microbe consortia is utilized to form a
biodegradation system in which the activities of various required enzymes are all high, so dead or decrepit thalli in
activated sludge can be effectively damaged and decomposed, and meanwhile, organic matters can be decomposed; and the generation quantity of excess
sludge is reduced through reducing the quantity of the
sludge in the process without influencing the quality of yielding water. On the premise of not greatly changing the traditional
sewage treatment process, the sludge
reduction ratio can reach 30%-70% in the
sewage treatment process by adopting the compound microorganism bacterium agent, and the comprehensive running cost of the sludge treatment can be reduced, so that the compound microorganism bacterium agent is of great significance on the aspects of economic, environmental and
social benefits.