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Ammonia-nitrogen degrading bacterium immobilization method for treating ammonia-nitrogen wastewater

A technology for ammonia nitrogen wastewater and degrading bacteria, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. problems such as low concentration, to achieve the effect of improving stability, increasing volume load, and improving removal efficiency

Inactive Publication Date: 2015-11-18
POTEN ENVIRONMENT GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the invention discloses a method for immobilizing ammonia nitrogen degrading bacteria for treating ammonia nitrogen wastewater, which is used to solve the problems of serious loss of bacteria species, small concentration of bacteria group and unstable reaction system easily affected by the outside world

Method used

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  • Ammonia-nitrogen degrading bacterium immobilization method for treating ammonia-nitrogen wastewater

Examples

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Effect test

Embodiment 1

[0041] (1) Preparation of CaCl 2 Solution: weigh 5gCaCl 2 , dissolved in 495g of distilled water to obtain 1% CaCl 2 solution.

[0042] (2) Preparation of immobilized ammonia-nitrogen degrading bacteria granules: Add 6g polyvinyl alcohol, 2g sodium alginate and 10g particle size to 200 mesh modified sodium clinoptilolite powder in 200ml distilled water, in a 70°C water bath at 70rpm Stir continuously at a rotating speed for 1 hour to obtain a mixed homogenate. After the prepared mixed homogenate was cooled to 35° C., 10 ml of high ammonia nitrogen degrading complex bacteria was added thereto, and the stirring was continued to prepare a mixed homogenate containing ammonia nitrogen degrading bacteria. Use a 50mL syringe with a needle to draw the mixed homogenate containing ammonia nitrogen degrading bacteria, and then drop it into the CaCl with a mass fraction of 1%. 2 solution, the needle with CaCl 2 The distance between the liquid surface of the solution is 15 cm, so as t...

Embodiment 2

[0044] (1) Preparation of CaCl 2 Solution: weigh 15gCaCl 2 , dissolved in 485g of distilled water to obtain 3% CaCl 2 solution.

[0045] (2) Preparation of immobilized ammonia-nitrogen-degrading bacteria granules: add 20 g polyvinyl alcohol, 0.2 g sodium alginate and 3.3 g modified sodium clinoptilolite powder with a particle size of 325 mesh in 200 ml distilled water, and place them in a water bath at 80° C. The rotating speed of 80rpm was continuously stirred for 50min to obtain a mixed homogenate. After the mixed homogenate was cooled to 30° C., 10 ml of high ammonia nitrogen degrading complex bacteria was added thereto, and the stirring was continued to prepare a mixed homogenate containing ammonia nitrogen degrading bacteria. Use a 50mL syringe with a needle to draw the mixed homogenate containing ammonia nitrogen degrading bacteria, and then drop it into the CaCl with a mass fraction of 3%. 2 solution, the needle with CaCl 2 The distance between the liquid surface o...

Embodiment 3

[0047] (1) Preparation of CaCl 2 Solution: Weigh 50g CaCl 2 , dissolved in 450g of distilled water to obtain 10% CaCl 2 solution.

[0048] (2) Preparation of immobilized ammonia nitrogen degrading bacteria granules: add 16g polyvinyl alcohol, 0.4g sodium alginate and 5.3g modified sodium clinoptilolite powder with a particle size of 200 mesh in 200ml distilled water, and place in a water bath at 85°C with The rotating speed of 90rpm was continuously stirred for 45min to obtain a mixed homogenate. After the mixed homogenate is cooled to 32° C., add 10 ml of high ammonia nitrogen degrading complex bacteria to the solution, and continue stirring to prepare a mixed homogenate containing ammonia nitrogen degrading bacteria. Use a 50mL syringe with a needle to draw the mixed homogenate containing ammonia nitrogen degrading bacteria, and then drop it into the CaCl with a mass fraction of 10%. 2 solution, the needle with CaCl 2 The distance between the liquid surface of the solut...

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Abstract

The embodiment of the invention discloses an ammonia-nitrogen degrading bacterium immobilization method for treating ammonia-nitrogen wastewater. The method comprises the following steps: (1) adding sodium alginate, polyvinyl alcohol and clinoptilolite into water, and stirring at 70-100 DEG C to obtain mixed slurry, wherein the ratio of sodium alginate to water is (0.1-1)g:100mL, the ratio of polyvinyl alcohol to water is (3-10)g:100mL, and the mass ratio of polyvinyl alcohol to clinoptilolite is 6:(1-10); (2) cooling the mixed slurry to 30-45 DEG C, adding ammonia-nitrogen degrading bacteria into the mixed slurry, and stirring to prepare mixed slurry containing the ammonia-nitrogen degrading bacteria; and (3) dropwise adding the mixed slurry containing the ammonia-nitrogen degrading bacteria into a CaCl2 solution of which the mass fraction is 1-10%, standing at 0-10 DEG C for 2-24 hours, and flushing with normal saline or water. By adopting the method provided by the invention, the ammonia-nitrogen degrading bacteria cannot flow away along with a water body, so that the system stability and the ammonia-nitrogen removal efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for immobilizing ammonia nitrogen degrading bacteria for treating ammonia nitrogen wastewater. Background technique [0002] Ammonia nitrogen wastewater mainly comes from petrochemical, coal gasification, metallurgy, paint, leather tanning, pigment, chemical fertilizer, coking and other industrial wastewater. Ammonia nitrogen wastewater directly discharged into the river will cause eutrophication of the water body, resulting in the rapid reproduction of algae and other plankton, the decrease of dissolved oxygen in the water body, the deterioration of water quality, and the massive death of fish and other organisms due to lack of oxygen. When the ammonia nitrogen in the water exists as an oxide nitrite nitrogen, it can reduce the animal's resistance, destroy red blood cells, cause the loss of blood oxygen supply capacity, and the nitrite nitrogen can also cau...

Claims

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Application Information

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IPC IPC(8): C12N11/14C12N11/10C12N11/08C12N11/04C02F3/34
Inventor 乔瑞平乔丽丽张伦梁蒋玮
Owner POTEN ENVIRONMENT GRP
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