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Method used for increasing sewage processing biomembrane formation speed and stability

A sewage treatment and biofilm technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of inability to take into account aerobic and anaerobic treatment, total nitrogen and total phosphorus removal Weak ability, poor use of AHLs and other problems, to achieve good removal effect, wide application range, and easy operation

Active Publication Date: 2019-11-19
HUBEI UNIV
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Problems solved by technology

[0005] In view of the fact that the existing biofilm wastewater treatment process takes a long time to hang the film, and the formed biofilm has low stability and is easy to fall off, resulting in high turbidity of the effluent, weak removal capacity of total nitrogen and total phosphorus, and the use of AHLs Due to poor pertinence and the inability to take into account the problems of aerobic and anaerobic treatment, the present invention provides a method for improving the formation speed and stability of biofilm in sewage treatment, and the adopted technical scheme is as follows:

Method used

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  • Method used for increasing sewage processing biomembrane formation speed and stability
  • Method used for increasing sewage processing biomembrane formation speed and stability
  • Method used for increasing sewage processing biomembrane formation speed and stability

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specific Embodiment approach 1

[0038]The operating temperature of the aerobic biofilm treatment process is 5-38°C, the dissolved oxygen concentration is higher than 2.5mg / L, the ammonia nitrogen concentration of pollutants in the influent water is less than 100mg / L, and the organic carbon concentration is less than 500mg / L. The detection method of the quorum sensing signal molecule in this embodiment is carried out according to the following steps: 1. Extract the quorum sensing signal molecule in the system: take an activated sludge sample, filter it with a 0.45 μm cellulose acetate membrane, and collect the supernatant; Concentration of the treated sample: take 1L of the filtered supernatant, and perform solid phase extraction (Solid extraction, SPE) operation with the RapidTrace solid phase extraction workstation, and use Bond Elut-C18 (1mg 6mL, Agilent Teehnology, Japan). The sample concentrated by SPE was transferred to the KD concentrator tube, and concentrated to less than 500 μL with a nitrogen blowe...

specific Embodiment approach 2

[0041] The difference between this embodiment and the first embodiment is that the signal molecule is added at a concentration of 50-200 nM, added once a day for 2 weeks, and other step parameters are the same as those of the first embodiment.

specific Embodiment approach 3

[0043] The difference between this embodiment and the first embodiment is that the signal molecule is added at a concentration of 200-500 nM, added once a day for 2 weeks, and other steps and parameters are the same as those of the first embodiment.

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Abstract

The invention discloses a method used for increasing sewage processing biomembrane formation speed and stability, and belongs to the technical field of sewage processing. According to the method, extraction and concentration of an active sludge sample in aerobic or anaerobic biomembrane sewage processing technology are carried out, ultra high performance liquid chromatography tandem electro-sprayion source analysis is adopted in analysis of AHL quorum sensing signals of the active sludge sample, quantitative calculation is carried out to determine AHL signal molecular type and using amount, and at last, exogenous AHLs signal molecules are added into aerobic or anaerobic biomembrane sewage processing technology based on the determined type and using amount, and synchronous nitrogen and phosphorus removal is realized. According to the method, analysis on flora AHL signal in biomembrane formation process is adopted, biomembrane formation speed is accelerated, and at the same time, the stability of the formed biomembrane is increased greatly. The method is capable of solving problems in the prior art that biomembrane formation early stage system operation is not stable, and biofilm culturing time is long. The method is adopted in regulation and control of biomembrane sewage processing technology starting phase, so that cost is reduced greatly.

Description

technical field [0001] The invention relates to a method for improving the formation speed and stability of sewage treatment biofilm, which belongs to the technical field of sewage treatment. Background technique [0002] With the development of my country's economic level, the amount of sewage in cities and villages is increasing day by day. The traditional sewage treatment process such as A 2 O. The operation of oxidation ditch is not stable enough, it occupies a large area, and it is easy to generate sludge bulking and large sludge output, which seriously limits the treatment efficiency of the sewage plant and has adverse effects on the surrounding environment. The biofilm process has the advantages of stable operation, less residual sludge, simple management, strong ability to remove ammonia nitrogen and refractory pollutants, etc. It can adapt to a wide range of water quality changes, and has attracted great attention in recent years. The biofilm wastewater treatment ...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/28G01N30/02
CPCC02F3/02C02F3/2806G01N30/02C02F2203/004Y02W10/10
Inventor 胡惠秩
Owner HUBEI UNIV
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