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Ammonia-nitrogen biological enhanced processing method in waste water

A bioaugmentation and treatment method technology, applied in the field of high-efficiency biological treatment of ammonia nitrogen in wastewater, can solve the problems of unstable removal of ammonia nitrogen in the effluent, difficulty in achieving discharge indicators, etc., and achieve the effect of simple transformation and promotion of metabolic activities

Inactive Publication Date: 2010-07-21
洪清盾
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, only relying on the current biological nitrification, the removal of ammonia nitrogen in the effluent is unstable, and with the increase of the concentration of ammonia nitrogen in the influent, the ammonia nitrogen in the effluent also rises rapidly, and the existing emission targets are difficult to achieve

Method used

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  • Ammonia-nitrogen biological enhanced processing method in waste water

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Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 lysine production waste water

[0037] Its aerobic influent ammonia nitrogen 237mg / L, BOD 5 The value is 159mg / L, DO is 2.0mg / L, the sludge age is 30-50 days, sodium carbonate is added 356mg / L, the water temperature range is 25-35°C, the pH value is controlled at 8.0-8.4, and the wastewater is aerobic The system residence time is 12h.

Embodiment 2

[0038] Embodiment 2 Aquatic product processing waste water

[0039] Its aerobic influent ammonia nitrogen 68mg / L, BOD 5 The value is 133mg / L, DO is 1.5mg / L, the sludge age is 20 days, sodium carbonate is added 82mg / L, the water temperature range is 25-35°C, the pH value is controlled at 8.0-8.4, and the wastewater stays in the aerobic system Time 8h.

Embodiment 3

[0040] Embodiment 3 pig farm waste water

[0041] Its aerobic influent ammonia nitrogen 118mg / L, BOD 5 The value is 150mg / L, DO is 2.0mg / L, the sludge age is 30 days, sodium bicarbonate is added 230mg / L, the water temperature range is 25-35°C, the pH value is controlled at 8.0-8.4, and the wastewater is in the aerobic system The residence time is 4h.

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Abstract

The invention relates to an ammonia-nitrogen biological enhanced processing method in waste water, comprising aeration, adding medicine, nitrifying processes, according to the ammonia-nitrogen concentration in waste water, carbonate or bicarbonate is added by proportion, the adding proportion is that NH3-N: CO32- (HCO3-) is equal to 1: (1-8). Based on the basic theory of biological nitrification, by adding carbonate, bicarbonate and the like, metabolic activities of nitrosification bacteria and nitrifying bacteria are enhanced, nitrosification and nitratlon reactions are effectively increased, and therefore, the ammonia and nitrogen in waste water is quickly converted into nitrate and nitrite with high efficiency.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an efficient biological treatment method for ammonia nitrogen in wastewater. Background technique [0002] There are many sources of ammonia nitrogen pollution, and the discharge volume is relatively large. Such as steel, petrochemical, chemical fertilizer, inorganic chemical, glass manufacturing, pharmaceutical wastewater and various concentrations of ammonia nitrogen wastewater discharged from the food industry; sewage in daily life, landfill leachate animal excrement, meat Wastewater from processing and animal husbandry, and agriculture also contains large amounts of ammonia nitrogen. [0003] At present, domestic and foreign ammonia-containing wastewater treatment methods mainly include stripping method, stripping recovery method, chemical precipitation method, ion exchange method, and breakpoint chlorine addition method. The biological denitrification method, that is, n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F101/16
CPCY02W10/10
Inventor 洪清盾
Owner 洪清盾
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