A reactor for inhibiting the floating of bacteria or sludge and its application

A reactor and antibacterial technology, applied in water/sludge/sewage treatment, water pollutants, chemical instruments and methods, etc., can solve the problems affecting the reaction efficiency of the reactor, activated sludge adhesion, etc., to improve the operation Flexibility, enhanced washout, enhanced effect of backmixing

Active Publication Date: 2020-10-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device adjusts the volume of the reaction tank by adjusting the number of separate tanks. The number of separate tanks is large, and the activated sludge is easy to stick to the tank wall. The air bubbles generated in the anaerobic section and the anoxic section are easy to carry fine sludge to the surface, which will Affect the reaction efficiency of the reactor

Method used

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  • A reactor for inhibiting the floating of bacteria or sludge and its application
  • A reactor for inhibiting the floating of bacteria or sludge and its application
  • A reactor for inhibiting the floating of bacteria or sludge and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] use figure 1 , 2 , The cylindrical reactor shown in 3, the cross-sectional diameter of the reactor is 50cm, and the height of the reactor is 100cm. The bottom of the channel is 10cm from the bottom of the reactor, and the top is 10cm higher than the highest liquid level. The cross-section diameter at the inlet end of the nozzle is 2 cm, the cross-sectional diameter at the exit end is 1 cm, the horizontal projection length is 2 cm, the vertical distance between each nozzle is 5 cm, α is 45°, and β is 45°. A submersible pump and an underwater aerator are connected to the bottom of the cylindrical channel.

[0026] Use the above-mentioned reactor to cultivate aerobic nitrifying bacteria, add the culture solution to the height of 30cm in the reactor, and then insert the nitrifying bacteria seed liquid at a volume fraction of 5%, so that the initial OD 600=0.05 (the absorbance value of the bacterial solution at a wavelength of 600nm). Then start the submersible pump and ...

Embodiment 2

[0028] use figure 1 , 2 , The cylindrical reactor shown in 3, the cross-sectional diameter of the reactor is 50cm, and the height of the reactor is 100cm. The bottom of the channel is 10cm from the bottom of the reactor, and the top is 10cm higher than the highest liquid level. The cross-sectional diameter of the inlet end of the nozzle is 1.5 cm, the cross-sectional diameter of the outlet end is 0.5 cm, the horizontal projection length is 2 cm, the vertical distance between each nozzle is 5 cm, and both α and β are 30°. A submersible pump and an underwater aerator are connected to the bottom of the cylindrical channel.

[0029] Use the above-mentioned reactor to cultivate aerobic nitrifying bacteria, add the culture solution to the height of 30cm in the reactor, and insert the nitrifying bacteria seed liquid at a volume fraction of 5%, so that the initial OD 600 =0.05. Then start the submersible pump and jet aerator, adjust the pressure of the pump to ensure that the wate...

Embodiment 3

[0031] The reactor described in Example 1 was used to carry out denitrification treatment of sewage, the concentration of nitrate nitrogen in the sewage was 100 mg / L, and the COD was 30 mg / L.

[0032] First, add sewage to be treated to a height of 50cm in the reactor, then add denitrification sludge to make the initial sludge concentration 500mg / L, add carbon source methanol according to C / N=3:1, and seal the reactor. Then start the submersible pump, adjust the pressure of the pump, ensure that the water body is ray ejected, the water body starts to rotate, and the back-mixing is very uniform. During the cultivation process, the pH is controlled at 7-8 and the temperature is 30-35°C. After 48 hours, the concentration of nitrate nitrogen in the reactor was 15 mg / L, and the COD was lower than 50 mg / L. At this time, the submersible pump was turned off, the bacteria were settled for 30 minutes, and then the sewage was discharged from the water outlet. During the cultivation proces...

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Abstract

The invention relates to a reactor capable of suppressing the floating of bacteria or sludge, and application thereof. The reactor comprises a reactor body, wherein four or more longitudinally-distributed cylindrical channels are uniformly arranged on the inner wall of the reactor; each cylindrical channel is provided with a plurality of nozzles; each nozzle is obliquely and downwardly arranged relative to a horizontal direction and forms a certain included angle with the corresponding cylindrical channel; and an included angle between the longitudinal center line of each nozzle and a tangentline at the joint of the corresponding cylindrical channel and the outer wall of the reactor is less than 45 degrees. During operation of the reactor, gas, liquid or gas-liquid mixtures ejected by thenozzles undergo rotary mixing in the reactor, so the purposes of washing the inner wall of the reactor and suppressing the floating of bacteria or sludge are achieved. According to the invention, a component with a specific structure is arranged in the reactor, so backmixing of water in the reactor is effectively guaranteed, the floating of bacteria or sludge is suppressed, and bacterial cultureor sewage treatment efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, and in particular relates to a reactor for inhibiting bacterium or sludge from floating up and an application thereof. Background technique [0002] Sewage biological treatment is a widely used sewage treatment method at present. There are many sewage biological treatment processes, including AO method, A / A / O method, SBR method, biological filter bed, etc. All biological treatment processes are inseparable The metabolic ability and activity of microorganisms are the key factors to determine the treatment effect. In the actual sewage treatment process, it is usually through the control of pH, temperature, dissolved oxygen and other parameters, as well as structural control such as stirring and immobilization to ensure the high metabolic capacity and good activity of microorganisms. In the current process research process, researchers have conducted detailed research on the opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/16
CPCC02F3/30C02F3/34C02F2101/16C02F2203/006
Inventor 赵胜楠高会杰孙丹凤郭志华陈明翔
Owner CHINA PETROLEUM & CHEM CORP
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