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Method for treating ammonia-nitrogen wastewater through coupling of immobilization technology and CANON process

A technology for ammonia nitrogen wastewater and treatment methods, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low productivity coefficient of ammonia oxidizing bacteria and anammox bacteria, The activity is easily inhibited, the generation cycle is long, etc., to achieve the effect of prolonging the solid residence time, improving the mass transfer performance, and fast mass transfer speed

Inactive Publication Date: 2016-02-03
戴昕
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0014] However, ammonia oxidizing bacteria and anammox bacteria have low yield coefficient, long generation cycle, and easily inhibited activity, so they are easy to be eliminated in the actual treatment process

Method used

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  • Method for treating ammonia-nitrogen wastewater through coupling of immobilization technology and CANON process
  • Method for treating ammonia-nitrogen wastewater through coupling of immobilization technology and CANON process

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Embodiment

[0041] Adopt the method of the present invention to treat certain pharmaceutical waste water biochemical tail water, water quality is as follows: ammonia nitrogen=200-400mg / L, CODcr=100-200mg / L, pH=7.8~8.5, after the waste water is collected by regulating tank 1, it is pumped by water pump 2 In the lifting internal circulation biological fluidized bed reactor 3, the dosage of the immobilized microbial carrier 7 is 20%, and the carrier embedding colloid adopts 6.5% polyvinyl alcohol, 0.6% sodium alginate, 0.1% calcium carbonate, 0.1% Silica; the fixed solution is saturated boric acid and 0.8% aluminum salt solution, the amount of ammonia oxidizing bacteria embedded in the carrier is 20mgVSS / mL embedded colloid, and the amount of anaerobic ammonia oxidizing bacteria embedded is 40mgVSS / mL embedded colloid, blower 3 Oxygenate the internal circulation biological fluidized bed reactor 4 through the aeration device 11, so that the dissolved oxygen in the diversion center tube 6 is co...

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Abstract

The invention discloses a method for treating ammonia-nitrogen wastewater through coupling of an immobilization technology and a CANON process and belongs to the field of environmental protection. According to the method, ammonia oxidizing bacteria and anaerobic ammonia oxidation bacteria are embedded into an immobilized carrier and an embedding method for immobilizing microorganisms and a biological fluidized bed are combined, so that efficient and low-consumption treatment of ammonia-nitrogen wastewater is realized through controlling influent concentration, DO concentration in a reactor and other indexes.

Description

technical field [0001] The invention belongs to the field of environmental protection. In particular, it relates to a method for treating ammonia nitrogen wastewater with immobilization technology coupled with a CANON process. Background technique [0002] Sustainable development and carbon emission reduction have always been important development goals and trends in the field of sewage treatment. The traditional nitrification-denitrification biochemical denitrification reaction process is as follows: [0003] In the first step, ammonia nitrogen is converted into nitrite nitrogen under the action of nitrite reducing bacteria: [0004] NH 4 + +3 / 2O 2 →NO 2 - +2H + +H 2 O-ΔEΔE=278.42KJ [0005] In the second step, nitrite is converted into nitrate under the action of nitrate bacteria: [0006] NO 2 - +1 / 2O 2 →NO 3 - -ΔEΔE=278.42KJ [0007] It takes about 4.3gO to oxidize 1g of ammonia nitrogen in the above process 2 , and consume approximately 7.14g CaCO 3 A...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 戴昕
Owner 戴昕