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Enhanced biochemical treatment method for high ammonia-nitrogen wastewater

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

Inactive Publication Date: 2012-05-30
TIANJIN TANGGU XINYU ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Enhanced biochemical treatment method for high ammonia-nitrogen wastewater
  • Enhanced biochemical treatment method for high ammonia-nitrogen wastewater

Examples

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Embodiment 1

[0029] The method of the present invention is used to treat the landfill leachate, using a combined reactor of a first-stage anaerobic filter + a first-stage anoxic filter + a third-stage biological aerated filter, and employing high-efficiency composite microorganisms Biosystem B350 and B110. COD concentration in raw water is 3800-24000mg / L, NH 3 -N concentration is 1050-2100mg / 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 concentration 260-950mg / L, NH 3 -N concentration is 2.0-30.0mg / L. The average COD removal rate reaches over 90%, and the NH 3 The average removal rate of -N reaches over 99%.

Embodiment 2

[0031] 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. The influent COD concentration is 950-2500mg / L, the NH3-N concentration is 300-450mg / L, the water temperature of anaerobic filter and anoxic filter is controlled at 30-35℃, and the water temperature of aerated biological filter is controlled at 25-30 ℃, the total residence time is 72h, the final effluent COD concentration is 50-150mg / L, NH 3 -N concentration is 1.0-6.0mg / L.

Embodiment 3

[0033] The coking waste water is treated by the method of the present invention, a combined reactor of a first-stage anaerobic filter + a first-stage anoxic filter + a two-stage aerated biological filter is adopted, and the high-efficiency composite microorganism Biosystem B350 is adopted. Influent COD concentration is 3500-5000mg / L, NH 3 -N concentration is 450-700mg / L, the water temperature of anaerobic filter and anoxic tank 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 The concentration is 80-130mg / L, NH 3-N concentration is 0.2-1.5mg / L.

[0034] 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 an enhanced biochemical treatment method for high ammonia-nitrogen wastewater, which belongs to the technical field of sewage treatment. Anaerobic-hypoxia-aerobic combined process is adopted in the method, reactors are biological filter reactors, macroporous polyurethane-based carriers are filled in the reactors, high-efficiency composite microorganisms are fed into a biological membrane acclimation and cultured in biological filters, and high ammonia-nitrogen wastewater is treated in an enhanced manner by immobilization technology. The enhanced biochemical treatment has the advantages that biological filter process and enhanced biological treatment process are effectively combined by the immobilization technology, nitrogen removal efficiency is high, high-efficiency bacteria fixedly grow in the carriers, a biological inhibiting effect of high-content ammonia and nitrogen upon organisms is relieved, carrying capacity for change of load of pollutant of incoming water is high, system impact resistance is realized, and the enhanced biochemical treatment method is a high-efficiency combined biological treatment method.

Description

technical field [0001] The invention relates to a biointensive treatment method for high ammonia nitrogen wastewater. The method is a combination of biofilter and bioaugmentation through immobilization technology to remove pollutants such as high ammonia nitrogen, nitrite nitrogen, nitrate nitrogen and organic matter in wastewater. It 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] With the development of economy and science and technology, people's environmental awareness is constantly improving. The traditional activated sludge method has been transformed into the A / O method based on the traditional activated sludge process. A 2 / O method and other processes, although they have played a certain role in denitrification, there are still many problems, such as large area, low organic load, low efficiency at ...

Claims

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Application Information

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IPC IPC(8): C02F3/30
Inventor 代君陈晓英时旭
Owner TIANJIN TANGGU XINYU ENVIRONMENTAL PROTECTION TECH
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