53results about How to "Good degradation activity" patented technology

The invention relates to pseudomonas sp. as well as a preparation method and application of a dual-functional enzyme preparation of the pseudomonas sp. A pseudomonas sp. ECO-1 strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on March 31, 2017, with the preservation number of CGMCC No. 13960. The pseudomonas sp. ECO-1 strain is obtained by separating from POPs (Persistent Organic Pollutants) polluted soil for the first time; the dual-functional enzyme preparation capable of efficiently degrading polychlorinated biphenyl and atrazine is prepared by utilizing the strain for the first time; especially, the dual-functional enzyme preparation has remarkable degradation activity on the polychlorinated biphenyl which is difficulty degraded under an aerobic condition and the performance is completely different from functions of existing pseudomonas sp. and enzyme preparations thereof; the pseudomonas sp. has a large-scale production and application prospect.

The invention relates to a method of reducing sludge of petrochemical wastewater by aerating combination of ozone and pure oxygen, belonging to the technical field of environmental engineering. Aiming at the characteristics of petrochemical wastewater, sludge of petrochemical wastewater is reduced by controlling ozone oxidization and pure oxygen aeration by adopting a special process condition. Ozone oxidization treatment is carried out according to 40-50% of a theoretical output of residual sludge, and the oxidization time is controlled within 28-35 minutes, so that the field sludge reduction efficiency is controlled within 72.7-81.5%. Meanwhile, COD (Chemical Oxygen Demand) of effluent reaches the standard, so that the sludge is reduced, while the method is high in treatment efficiency, low in energy consumption and low in operating cost.

The invention discloses a disease control bacterial strain targeting the quorum sensing signal molecule AHLs, and the preservation number of the bacterial strain is GDMCC 60434. The Bacillus cereus has a good degradation activity against the quorum sensing signal molecule AHLs, and the degradation effect is stable and significant. A new way and method is provided.

The invention relates to a rare earth co-doped BiVO4 photocatalyst with upconversion characteristic and a preparing method and application thereof. The preparing method includes the steps that bismuth nitrate pentahydrate and ammonium metavanadate are dissolved in water to prepare mother liquor A and mother liquor B, the mother liquor B is added into the mother liquor A by the molar ratio of Bi:V=1:1 to obtain mixed liquor, the pH value of the mixed liquor is adjusted to be 8, two kinds of rare earth nitrate are sequentially added into the mixed liquor, the molar ratio of total amount of the two rare earth elements: bismuth=(10.52-10.55):100, and finally the rare earth co-doped BiVO4 photocatalyst with upconversion characteristic is prepared through a microwave hydrothermal method in a heat preservation mode. The microwave hydrothermal synthesis technology is adopted for fast synthesizing the rare earth co-doped BiVO4 photocatalyst with high degradation activity and upconversion characteristic, the rare earth co-doped BiVO4 photocatalyst has excellent degradation activity under simulated sunlight, the photocatalysis efficiency of pure-phase BiVO4 powder is greatly improved, and the rare earth co-doped BiVO4 photocatalyst has wide application prospects.

The invention belongs to the technical field of microbial degradation of organic pollutants, and discloses a GY2B degrading bacteria immobilizing ball as well as a preparation method and application thereof. The GY2B degrading bacteria immobilizing ball is a gel ball formed by embedding GY2B degrading bacteria by taking a crosslinking polymerization product of polyvinyl alcohol, algin and kaolin as a carrier. The preparation method disclosed by the invention comprises the following steps: (1), sequentially adding polyvinyl alcohol and algin into water, heating, stirring and dissolving respectively, adding kaolin, and stirring and mixing uniformly so as to obtain a mixed solution; (2), cooling the mixed solution to room temperature under irradiation of ultraviolet light, adding a GY2B degrading bacteria suspension, and uniformly stirring to obtain a bacteria embedding solution; and (3), dropwise adding the bacteria embedding solution into a crosslinking solution, and crosslinking, solidifying and condensing to obtain the GY2B degrading bacteria immobilizing ball. The GY2B degrading bacteria immobilizing ball has more thorough, rapid and steady degrading effects to phenol; furthermore, a steady degrading environment can be provided; and the GY2B degrading bacteria immobilizing ball is adaptive to a toxic environment.

The invention provides prothioconazole high-efficiency degrading bacteria W313, an inoculum and application, and relates to the field of biotechnology. The prothioconazole high-efficiency degrading bacteria W313 was classified and named Pseudomonas sp., and was deposited in the General Microbiology Center of the China Microorganism Culture Collection Management Committee on September 11, 2019, and the deposit number is CGMCC No.18486. The prothioconazole high-efficiency degrading bacteria W313 has higher prothioconazole tolerance, better prothioconazole degrading activity and the beneficial effect of prothioconazole hydrolase producing activity.