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A kind of autotrophic denitrification water quality regulating bacteria agent and its application

A water quality regulating bacterial agent, autotrophic denitrification technology, applied in anaerobic digestion treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as sulfide pollution, excessive nitrate, etc., and achieve fast reaction speed , Less investment in cultivation and mild cultivation conditions

Active Publication Date: 2016-04-27
湖北悦易化学工业有限公司
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Problems solved by technology

[0011] The purpose of the present invention is to make full use of the desulfurization and denitrification effects of Thiobacillus denitrificans and photosynthetic sulfur bacteria, and provide a kind of autotrophic denitrification water quality regulating bacterial agent for the widely existing problems of sulfide pollution and excessive nitrate at present. Bacteria can effectively remove high concentration of sulfide and nitrate in the medium

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  • A kind of autotrophic denitrification water quality regulating bacteria agent and its application

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Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1 inhibits SRB growth and sulfide in oilfield wastewater

[0027] 1) The composition of oil field sewage is shown in Table 1 below. Among them, neither nitrate nor nitrite was detected, but the content of ammonium salt was relatively high, which was 70.17mg·L -1 , in addition the sulfate content is 48.32mg·L -1 , the detected sulfide content was 1.96mg·L -1 , the amount of sulfate-reducing bacteria was 600 / mL.

[0028] 2) Using the sewage static coupon corrosion evaluation method, after adding a certain proportion of the concentrated bacterial agent of the present invention, and culturing at a constant temperature of 55°C for 14 days, the results showed that the growth of SRB was fully inhibited, and it was not detected in the water sample after the coupon was taken out. The presence of active SRB and sulfide, and the corrosion inhibition rate of the test piece was 84.5%.

[0029] Table 1 Analysis results of oilfield sewage water quality

[0030]

Embodiment 2

[0031] Embodiment 2 Degradation of ammonia nitrogen and nitrite in aquaculture water

[0032] 1) The current situation of the farm, the breeding period is 80 days, the pool water is dark green, the ammonia nitrogen content in the pool water is 0.6mg / ml, and the nitrite content is 0.45mg / ml. The shrimp has low appetite and poor activity. There is a red dot on the connection part. 2) Apply 30 grams of HBWT-2, after 2 days, the content of ammonia nitrogen will be reduced to 0.3mg / ml, the content of nitrite will be reduced to 0.1mg / ml, the content of No. 3 ammonia nitrogen will be reduced to 0.1mg / ml, and the content of nitrite will be reduced to 0.05mg / ml, No. 4 ammonia nitrogen content was detected, the nitrite content was reduced to 0.02mg / ml, the shrimp vigor completely returned to normal, the shrimp body color returned to normal, became transparent, and the gloss increased.

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Abstract

A high-efficiency autotrophic denitrification water quality regulation bacterium agent is characterized by comprising thiobacillus denitrificans, photosynthetic sulfur bacteria and inorganic salt including nitrate, phosphate and the like for promoting bacterial growth. The thiobacillus denitrificans and photosynthetic sulfur bacteria respectively account for 80%-95% and 5%-20%, and the total salinity of the inorganic salt is 1.5%. A microbial compound bacterium agent is wide in application, and can be applied to blockage of sulfide in ageing oil, microorganism corrosion in an oil field oil extraction water treatment system, smoke desulfuration in power plants, sediment deodorization and H2S removal in municipal sewage and slaughter wastewater, denitrification and phosphorus control of eutrophication natural lakes, degradation of nitrate and nitrite in aquaculture, and the like. The bacterium agent has unique desulfuration and denitrification physiological properties, can perform synchronous desulfuration and denitrification, requires no addition of organic matter, has mild reaction conditions and remarkable effects, and can be applied to multiple fields. In addition, reaction products are safe and innocuous.

Description

technical field [0001] The invention relates to the technical field of environment and material protection, in particular to an autotrophic denitrification water quality regulating bacterial agent and its application. Background technique [0002] Sulfur pollution and nitrogen pollution are two forms of pollution that exist widely at present. Among them, sulfide is a common environmental pollutant and corrosion product of oil and gas fields, and it exists widely in many fields of industrial production; Common toxic substances, the sources and profiles of these two typical water pollutants are detailed below. [0003] The generation of sulfide in oil and gas field engineering is mainly caused by the growth and reproduction of sulfate-reducing bacteria (SRB), which is one of the main factors causing microbial corrosion and environmental pollution. SRB is an anaerobic bacterium that uses organic matter as nutrients, and is widely found in soil, seawater, river water, undergrou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/28
Inventor 刘宏芳秦双
Owner 湖北悦易化学工业有限公司
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