A kind of microbial desilting agent and preparation method thereof

Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of microbial environmental protection, and in particular relates to a microbial dredging agent and a preparation method thereof. Background technique [0002] Microbial water purifier is a preparation that uses microorganisms to purify sewage. It generally uses adsorption, covalent bonding, cross-linking or embedding methods to immobilize microbial purification bacteria that can purify sewage on a specific carrier. made on top. General microbial water purifiers are suitable for sewage purification in small-scale aquaculture waters such as ponds. For flowing waters, especially bottom dredging in flowing waters, ordinary microbial water purifiers are difficult to play a role (microbial purifiers applied to bottom dredging The water agent can be called microbial desilting agent), the main reasons are as follows: 1. The purification bacteria used are basically aerobic bacteria, such as Bacillus subtilis, which ...

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Problems solved by technology

General microbial water purifiers are suitable for sewage purification in small-scale aquaculture waters such as ponds. For flowing waters, especially bottom dredging in flowing waters, ordinary microbial water purifiers are difficult to play a role (microbial purifiers applied to underwater dredging The water agent can be called microbial desilting agent), the main reasons are as follows: 1. The purification bacteria used are basically aerobic bacteria, such as Bacillus subtilis, which makes the dissolved oxygen in the bottom silt less or almost In an environment without dissolved oxygen, it is difficult for microbial purification flora to play the role of sediment dredging and water purification

2. For small-scale waters such as aquaculture ponds, it is possible to maximize the effectiveness of purifying bacterial flora by adding aeration devices, but it is difficult to add aeration devices for polluted water bodies in large-scale flowing waters such as rivers and lakes.

3. The microbial purification bacteria group fixed by ordinary methods is generally suspended in the water after being sprinkled into the water to play a role in water purification. For the sediment dredging in flowing waters, ordinary microbial water purification agents cannot sink to the bottom and are easy to flow with the water Therefore, it cannot play the role of dredging agent; while using mechanical dredging in rivers, etc. is not only costly, but also destroys the ecological environment and affects the self-purification function of water areas.

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