The invention relates to a microbe dredging agent. A porous
zeolite is employed as a carrier; and mixed
bacteria of actinomycetes, nitrosomonas eutropha,
nitrobacter winogradskyi,
paracoccus pantotrophus and
bacillus megaterium, in a certain proportion, are used as dredging
bacteria. The five specific dredging
bacteria form a ''
cell family'', which, through mutual conversion
metabolism, not only can play a role of water purification in an
oxygen-rich
water area, but also can play a role of biological
decomposition and conversion in a low-
oxygen even anoxic environment (e.g. water-
bed mud) andsalty
water area (e.g. gulf), so as to purify
sewage and improve
water quality. The invention employs a porous
zeolite with a high absorptivity as a fixed carrier of the dredging bacteria, so that the dredging bacteria are more firmly fixed and not easily flushed by water; because the
zeolite is apt to sinking, the microbe dredging agent of the invention is especially suitable for water-
bed dredging of river and lake, etc. In addition, the preparation method of the microbe dredging agent of the invention has mild conditions, a simple technology and advantages of low production costs and benefit for popularization and application.