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Sequencing batch reactor, method for culturing biological membrane on sequencing batch reactor and method for treating sewage by utilizing sequencing batch reactor

A sequencing batch reactor and the technology of the reactor are applied in the field of culturing biofilms in the reactor and sequencing batch reactors, which can solve the problems of complicated control of the reactor, and achieve compact structure, small diameter, nitrogen, phosphorus and organic matter. low content effect

Active Publication Date: 2014-06-18
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the simultaneous removal of phosphorus is to be realized on the basis of the above, the control of the reactor is more complicated.

Method used

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  • Sequencing batch reactor, method for culturing biological membrane on sequencing batch reactor and method for treating sewage by utilizing sequencing batch reactor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the sequencing batch reactor of this embodiment includes a reactor body 4 with an effective volume of 4L, an inlet pump 1, an inlet pump 2, a control system 3, a packing 5, a drain valve 6 and a dissolved oxygen concentration detector 7, A nitrate concentration detector 8, an organic matter concentration detector 9, and a phosphate concentration detector 10, the inlet pump 1, the inlet pump 2, and the drain valve 6 are connected to the reactor body 4 respectively, and the control system 3 analyzes dissolved oxygen The signals of the concentration detector 7, the nitrate concentration detector 8, the organic matter concentration detector 9 and the phosphate concentration detector 10 adjust the working conditions of the water inlet pump 1, the inlet pump 2 and the drain valve 6, and the diameter of the filler 5 is 3cm. The specific surface area is 200m 2 / m 3 , its volume is 80% of the reactor body 4.

[0027] As an improvement of the sequenc...

Embodiment 2

[0043] The difference between the sequencing batch reactor of this embodiment and embodiment 1 is that in this embodiment, the filler 5 has a diameter of 5 cm and a specific surface area of ​​220 m 2 / m 3 , whose volume is 50% of the reactor body 4. In the batch reactor of this embodiment, the filler 5 is made by 3D printing method, and its shape is a three-dimensional honeycomb spherical shape with 35 planes, and the material is polyamide fiber .

[0044] In the present embodiment, the method for cultivating biofilm in the sequencing batch reactor comprises the following steps:

[0045] 1) Select the sequencing batch reactor and inoculate with aerobic activated sludge, the concentration of the inoculated sludge is 3g / L;

[0046] 2) Under the anaerobic state, pump sewage containing organic matter and nitrogen and phosphorus into the reactor. The pH of the sewage is 7.5, the temperature is 8°C, and the water injection time is 60 minutes. The anaerobic state refers to the sewa...

Embodiment 3

[0059] The difference between the sequencing batch reactor of this embodiment and embodiment 1 is that in this embodiment, the filler 5 has a diameter of 2 cm and a specific surface area of ​​250 m 2 / m 3 , whose volume is 35% of the reactor body 4. In the batch reactor of this embodiment, the filler 5 is made by 3D printing method, and its shape is a three-dimensional honeycomb spherical shape with 40 planes, and the material is polyamide fiber .

[0060] In the present embodiment, the method for cultivating biofilm in the sequencing batch reactor comprises the following steps:

[0061] 1), select the sequencing batch reactor and inoculate aerobic activated sludge, the concentration of the inoculated sludge is 2g / L;

[0062] 2) Under the anaerobic state, pump sewage containing organic matter and nitrogen and phosphorus into the reactor. The pH of the sewage introduced is 6.5, the temperature is 25°C, and the water injection time is 45 minutes. The anaerobic state refers to ...

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Abstract

The invention discloses a sequencing batch reactor which comprises a reactor body, a sensor, a regulator and a filler. The regulator regulates the working state of the reactor body according to the signal of the sensor; the diameter of the filler is 2-5 cm, the specific area is 180-250 m<2> / m<3>, and the total volume accounts for 30%-80% of the total volume of the reactor body. A method for culturing a biological membrane on the sequencing batch reactor comprises the following steps of firstly inoculating aerobiotic active sludge into the sequencing batch reactor; then pumping sewage into the sequencing batch reactor, and then introducing air; and finally precipitating to obtain the needed biological membrane. A method for synchronously removing nitrogen, phosphorus and organic substances which are contained in the sewage comprises the following steps of firstly pumping the sewage into the sequencing batch reactor; then standing for reaction, and then carrying out aeration treatment; finally discharging precipitations. The sequencing batch reactor disclosed by the invention can be used for synchronously removing the nitrogen, the phosphorus and the organic substances which are contained in the sewage and has the advantages of compact structure and low energy consumption. The method for culturing the biological membrane can obtain the light yellow biological membrane of 0.5-2 mm.

Description

technical field [0001] The invention belongs to the field of sewage treatment including biological treatment steps, and relates to a sequence batch reactor, a method for cultivating biofilm in the reactor and a method for treating sewage with the reactor. Background technique [0002] Processes related to sewage treatment are developing in the direction of high intensity and low energy consumption. The currently widely used sewage treatment process has the problems of large floor area, single function of each unit reactor, and high energy consumption for operation. If the different functions of reactors with different redox potentials are combined in time and space, for example, organic matter removal, nitrification and denitrification reactions are carried out simultaneously in the reactor, then the reaction time required for sewage treatment will be It is greatly reduced, which also means that the efficiency of the reactor is significantly improved and the volume of the r...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/30
CPCY02W10/10
Inventor 杨吉祥陈猷鹏郭劲松董阳申渝段宣明黎静范树迁
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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