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Intensified biological treatment method for high strength ammonia wastewater

A bioaugmentation and treatment method technology, which is applied in the field of bioaugmentation treatment of high ammonia nitrogen wastewater, can solve the problems of the wide application of bioaugmentation technology, the inability to effectively separate the effluent, and increase the cost of water treatment, so as to achieve rich biological species and avoid bacteria. Effects of runoff, high microbial load

Inactive Publication Date: 2008-07-30
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the high-efficiency bacteria added are often suspended in the system, they are prone to inactivation and loss, and cannot be effectively separated from the effluent. Long-term dosing will increase the cost of water treatment, and the wide application of bioaugmentation technology is limited.

Method used

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  • Intensified biological treatment method for high strength ammonia wastewater

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Embodiment 1

[0035] The method of the present invention is used to treat the landfill leachate, and the combined reactor of the first-level anaerobic filter + the first-level anoxic filter + the third-level biological aerated filter is adopted, and the high-efficiency composite microorganisms adopted are Biosystem B350 and B110. Raw water COD Cr The concentration is 3800-24000mg / L, NH 4 + -N concentration is 1050-2100 mg / L, the water temperature of anaerobic filter and anoxic filter is controlled at 30-35°C, the water temperature of biological aerated filter is controlled at 20-28°C, the total residence time is 96h, and the final effluent COD Cr The concentration is 260-950mg / L, NH 4 + -N concentration is 2.0-30.0mg / L. COD Cr The average removal rate reaches over 90%, NH 4 + The average removal rate of -N reaches over 99%.

Embodiment 2

[0037] The method of the present invention is used to treat the dilution water of pharmaceutical factory production waste water, and the combined reactor of two-stage anoxic filter + three-stage aerated biological filter is adopted, and the high-efficiency composite microorganisms adopted are Biosystem B350 and B500. Influent COD Cr The concentration is 950-2500mg / L, NH 4 + -N concentration is 300-450mg / L, the water temperature of anaerobic filter and anoxic filter is controlled at 30-35°C, the water temperature of biological aerated filter is controlled at 25-30°C, the total residence time is 72h, and the final effluent COD Cr The concentration is 50-150mg / L, NH 4 + -N concentration is 1.0-6.0mg / L.

Embodiment 3

[0039] The coking waste water is treated by the method of the present invention, and a combined reactor of a first-stage anaerobic filter + a first-stage anoxic filter + a two-stage aerated biological filter is used, and the high-efficiency composite microorganism adopted is Biosystem B350. Influent COD Cr The concentration is 3500-5000mg / L, NH 4 + -N concentration is 450-700mg / L, the water temperature of anaerobic filter and anoxic filter is controlled at 30-35°C, the water temperature of biological aerated filter is controlled at 20-30°C, the total residence time is 36-48h, and the final effluent COD Cr The concentration is 80-130mg / L, NH 4 + -N concentration is 0.2-1.5mg / L.

[0040] It can be seen from the above examples that the method of the present invention has a good treatment effect on different types of high ammonia nitrogen wastewater.

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Abstract

The invention relates to a bioaugmentation treatment method of high ammonia nitrogen, belonging to a sewage treatment technology field which adopts the combined process of anaerobic-hypoxia-aerobic. All the used reactors are biology filtering pool reactor and the inner of the reactor is filled with a macroporous poly urethano carrier. In the domestication and culture process of the biology filtering pool biology membrane, compound microorganism of a high efficiency is added. The high ammonia nitrogen water is processed by a strengthening immobilization technology. The detail functions of each unit are referred to the specification. The invention has the advantages that the two kinds of technologies of biology filtering and the bioaugmentation are combined with the strengthening immobilization technology; the carbon and nitrogen pollution in the leachate are removed. As an effective combined biology treatment method, the invention also has the advantages of high removal efficiency of nitrogen and non-need additional organic carbon source; the high efficiency of bacteria fixedly growing on the carrier, reducing the inhibition effect of the high ammonia nitrogen to the biology, avoiding the draining of the bacteria in the traditional method, having the strong ability of bearing the water inlet pollutants load changes and ability of resisting the system impact. Therefore, the invention is.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a method for biointensified treatment of high ammonia nitrogen waste water. The method is to remove high ammonium nitrogen, nitrite nitrogen, and nitric acid in waste water by combining biofilter and bioaugmentation through immobilization technology. The treatment process of pollutants such as salt nitrogen and organic matter is suitable for the treatment of high ammonia nitrogen wastewater such as municipal solid waste leachate, aquaculture wastewater, coking wastewater and sludge anaerobic digestion solution. Background technique [0002] The main forms of nitrogen in wastewater are molecular nitrogen, organic nitrogen, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, and some nitrogen in hydrogen sulfide and cyanide. In wastewater, organic nitrogen and ammonia nitrogen are the main forms of nitrogen. Due to the toxic effects of ammonia nitrogen, the carcinogenic effe...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/28
CPCY02W10/10
Inventor 倪晋仁温丽丽叶正芳
Owner PEKING UNIV
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