Zeolite strengthened anaerobic ammoxidation sewage processing technique

An anammox and sewage treatment technology, which is applied in the field of zeolite-enhanced anammox sewage treatment technology, can solve the problem of slow growth of autotrophic anammox bacteria, no practical and long-term stable operation, reactor hydraulic Long residence time and other problems, to achieve the effect of improving sludge settling performance, shortening hydraulic retention time, saving infrastructure costs and operating costs

Inactive Publication Date: 2007-10-17
TONGJI UNIV
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Problems solved by technology

However, the process still has the following problems: (1) the process has not been practical and long-term stable operation; (2) the growth of autotrophic anammox bacteria is slow, the start-up time is long, and the hydraulic retention time of the reactor is also low. (3) The settling performance of anaerobic sludge is poor. In order to keep the anammox sludge in the reactor to obtain enough biomass, it is necessary to effectively intercept the sludge, but the existing interception technology is still Can not meet the requirements of use

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  • Zeolite strengthened anaerobic ammoxidation sewage processing technique
  • Zeolite strengthened anaerobic ammoxidation sewage processing technique

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[0015] The present invention will be further described according to accompanying drawing 2. The treatment process of the present invention comprises an anaerobic biological contact tank 1, a secondary sedimentation tank 2 and an anaerobic zeolite biological filter tank 3 formed by adding zeolite particles as filter materials in an anaerobic biological reactor. The wastewater first enters the anaerobic biological contact tank 1 for mixing and stirring treatment, and then enters the anaerobic zeolite biological filter 3 for biological treatment after being precipitated in the secondary sedimentation tank 2. Regeneration maintains a high removal efficiency of ammonia nitrogen in wastewater, and the wastewater treatment process is as follows:

[0016] Intake of water: Q 0 = 1.2 million m 3 / h, COD=200mg / L, NH 4 + -N=30mg / L, TN=40mg / L

[0017] Anaerobic biological contact tank: HRT = 2h, SS = 15000mg / L, add a stirrer to stir slowly

[0018] Sedimentation tank: Sedimentation t...

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Abstract

A zeolite intensifing anaerobic ammonoxidation sewage treatment technology relates to anaerobic ammonoxidation sewage treatment and zeolite intensifying biological denitrification sewage treatment technology, which is applicable to municipal wastewater, domestic sewage treatment, rubbish percolate, waste water with low carbon-nitrogen ratio treatment. The invention combines the zeolite intensifying biological denitrification sewage treatment technology with the anaerobic ammonoxidation technology, adopting an anaerobic zeolite biological filter using powder or granular zeolite as filtering material or an anaerobic biological filter (3) arranged directly in a reactor, accelerating growth of anaerobic ammonoxidation microorganism zeolite by zeolite, shortening hydraulic power residence time and starting time of the technology, and realizing zeolite regeneration in anaerobic condition. The invention is applicable to treatment of municipal wastewater, domestic sewage, rubbish percolate, organism with low carbon-nitrogen ratio, ammonia nitrogen, total nitrogen up-to-standard, has advantages of saving investment, low operating cost, a little occupation of land, flexible running, and improves treatability of surplus sludge, has good economic, environment and social benefit.

Description

technical field [0001] The zeolite-enhanced anammox sewage treatment process involves anaerobic ammonium oxidation sewage treatment and zeolite-enhanced biological denitrification sewage treatment technology, which is suitable for the treatment of urban sewage, domestic sewage, landfill leachate, and waste water with low carbon-to-nitrogen ratio. technical background [0002] The traditional biological denitrification technology includes two stages of nitrification and denitrification. The nitrification and denitrification reactions are completed by nitrifying bacteria and denitrifying bacteria respectively. Due to the different requirements of these two bacteria on environmental conditions, the two processes cannot occur at the same time. Therefore, the biological denitrification process developed from this is divided into two types of hierarchical nitrification and denitrification processes in time and space. And just cause the existence of following problems like this: (1...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
Inventor 吴志超杨爽赵慧
Owner TONGJI UNIV
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