Method for degrading organic tin in water body

Abstract

The invention discloses a method for degrading organic tin in a water body, belonging to the technical field of organic tin degradation. The method comprises the following steps: cultivating an organic tin-degrading bacterium agent; cultivating a biosurfactant-generating bacterium; and mixing the organic tin-degrading bacterium agent with the biosurfactant-generating bacterium according to a massratio of (1-20): 1, and drying the mixed bacteria so as to obtain a treating bacterial agent for organic tin combined pollution. According to the invention, the biosurfactant-generating bacterium is mainly used for promoting the emulsification and dissolution of organic tin pollutants and improving the hydrophilicity of the organic tin pollutants; after emulsification and dissolution, the organictin-degrading bacterium is used for biosorption and in-vivo accumulation of the organic tin pollutants; and organic tin is subjected to gradual dehydrocarbylation degradation so as to degrade organictin compounds into inorganic tin. The method for degrading organic tin in the water body provided by the invention has the advantages of high treatment efficiency, low cost and no secondary pollutioncompared with a chemical method and a heat treatment method.

Description

technical field [0001] The invention belongs to the technical field of organotin degradation, and in particular relates to a method for degrading organotin in water. Background technique [0002] At present, the commonly used existing technologies in the industry are as follows: with the continuous expansion of the scope of use of organotin compounds, the output of various organotin compounds is also increasing, and a large number of organotin compounds are used in industry, agriculture, and various insecticides. pesticides, herbicides, textile mildew and marine vessel antifouling. Organotin pollutants combine the characteristics of heavy metals and persistent organic pollutants, are highly toxic, persistent, and highly bioaccumulative, and can cause sexual distortions in species including molluscs, fish, and mammals, and It will endanger the ecosystem through the enrichment of the food chain. In the long-term production and use process, organotin pollutants will eventuall...

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Problems solved by technology

[0004] At present, the pollution of organotin is relatively difficult to deal with. Most of them use inorganic or organic chemicals to react with them to produce precipitation, gas or other harmless salt substances. However, other pollutants are introduced during the treatment of organotin, causing The continuous repeated pollution of the water body makes it difficult to purify

[0005] In the prior art (1) the shaker oscillator cannot realize the correction and compensation of the temperature sensor, so that the temperature cannot be accurately controlled and displayed, and the temperature is inaccurate, resulting in insufficient or excessive cultivation of organotin degradation bacteria, and even miscellaneous bacteria , affecting work progress; (2) The shaker oscillator adopts digital display temperature control, and the display screen is not clear enough, which increases the probability of reading errors, or the reading of values ​​is inaccurate, which makes it wrong to adjust the cultivation parameters and affects the arrangement of work. and carry out; (3) the output of the pressure sensor in the vacuum freeze dryer is non-linearly changing with the temperature, and contains larger random noise; the prior art cannot effectively reduce the random noise, cannot solve the problem of realizing temperature compensation, and makes the pressure sensor The accuracy is greatly reduced, resulting in insufficient pressure reduction, and insufficient vacuum brings difficulties to work

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