Aerobic and facultative anaerobic microbial activated bactericide for water treatment and application thereof in contact oxidation process

Abstract

The invention relates to an activated bactericide for improving the activity of a biological membrane on filler in the water treatment as well as application of the activated bactericide in a contact oxidation process. The activated bactericide is characterized in that an activating agent is a mixed bacteria liquid comprising pseudomonas fluorescens accounting for 40-60 percent of the total bacterial count, 15-20 percent of bacillus subtilis, 15-30 percent of bacillus megaterium, 5-10 percent of bacillus pumilus and metabolite of a culture solution of the mixture. The concentration of the activating agent added into the treatment water is 10<-6>-10<-5>. A materializing sludge layer generated by the filler can be effectively desorbed, a novel materializing sludge layer can be stopped from forming, and the service life of the filler is prolonged to 3-5 years; the activated bactericide has a function of in-situ regenerating and activating an aerobic and facultative anaerobic microbe and restores the activity of the biological membrane, so that the dormant and inactivated biological membrane on the filler is activated and restored, a bacteria colony on a novel membrane is positioned in a high-activity excited state, and further the decomposition ability is improved; and after the activated bactericide is fed, the removal rate of effluent COD (Chemical Oxygen Demand) is improved bymore than one time compared with that of the condition that the activating agent is not used.

Description

technical field [0001] The invention relates to an activating bacterial agent capable of effectively improving the activity of biofilm on water treatment biological fillers, which can effectively improve the activity of biofilms, prolong the service life of fillers, and its application in contact oxidation process. Background technique [0002] In the biological contact oxidation process of water treatment, fillers are often used as the material for the biological carrier to hang the film. However, after running for a long time, the organic pollutants and suspended particles in the water are adsorbed on the surface of the filler, sometimes it is too late to be digested and degraded by the microorganisms on the filler, and a thick physical and chemical mud layer accumulates on the surface of the filler for a long time, and adheres to the surface of the biological filler ( figure 1 , Figure 5 ). The accumulation of physical and chemical mud layer, first, causes the effectiv...

AI Technical Summary

Problems solved by technology

This modifier can only improve abnormal microbial properties or severe foaming, but still cannot improve or increase filler activity

[0007] Although the above-mentioned patents report the use of increasing microorganisms and chemical substances to temporarily stimulate (encourage) the restoration and improvement of the biodegradation function, or to inhibit the impact of harmful substances on their microorganisms, none of them can remove the physical and chemical mud layer on the filler. Digest and remove the physical and chemical mud layer, repair the damage of aerobic and facultative microbial flora under anoxic conditions, and improve their activity

Therefore, the problem of accumulation of sludge on the surface of aerobic biological filler has not been effectively solved for a long time, and has become a long-term unsolved problem in the biological contact oxidation process of wastewater treatment, so there is still room for improvement.

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