Mechanical internal circulation jet-flow anaerobic reactor and wastewater treatment method thereof

An anaerobic reactor and internal circulation technology, which is applied in anaerobic digestion treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the limitation of application range, unsatisfactory wastewater treatment effect, and difficult to grasp the parameters of internal circulation system and other problems, to achieve the effect of high concentration of anti-biotoxic substances, prolonging the sludge age, and strong resistance to water quality impact

Active Publication Date: 2015-03-25
NANJING UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the unsatisfactory treatment effect of wastewater with biological toxicity and strong impact in the existing technology, and the difficulty in grasping the parameters of the internal circulation system when designing wastewater from different industries, resulting in a great limitation in its application range, this paper The invention provides a mechanical internal circulation jet flow anaerobic reactor and its method for treating wastewater

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  • Mechanical internal circulation jet-flow anaerobic reactor and wastewater treatment method thereof
  • Mechanical internal circulation jet-flow anaerobic reactor and wastewater treatment method thereof
  • Mechanical internal circulation jet-flow anaerobic reactor and wastewater treatment method thereof

Examples

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Embodiment 1

[0056] Such as figure 1 As shown, a mechanical internal circulation jet anaerobic reactor of the present embodiment includes a reactor tank 4, a multiphase separator and an outlet weir 9, and also includes an internal circulation jet 3; the reactor tank 4 It is a cylindrical structure with a height of 12 meters. It adopts a steel structure or a steel concrete structure. The inner wall is treated with anticorrosion. It is equipped with a water inlet pipe 1, a fixed platform 2, an air guide pipe 7, an outlet pipe 8 and a reactor top cover 10; The multi-phase separator comprises two-phase separator 5 and three-phase separator 6; as figure 2 As shown, the internal circulation jet 3 is composed of upper and lower parts, the upper part includes jet opening 13, diffuser opening 15, guide tube 16 and steady flow opening 17; the lower part includes motor 11, rotating shaft 12 and High-speed blades 14, wherein: the jet port 13 and the steady flow port 17 are in the shape of a bell-sha...

Embodiment 2

[0072]A kind of mechanical internal circulation jet flow anaerobic reactor of this embodiment, the basic structure is the same as embodiment 1, the difference is: the inclination angle of the PVC plate in the two-phase separator 5 is 60 °, and the two-phase separator 5 The area below the surface accounts for 75% of the total volume of the entire reactor tank body 4; the overall height of the internal circulation jet 3 is 40% of the total height of the reactor tank body 4; Down 60°, the height of the jet port 13 is 1.5 meters, and the diameter of the steady flow port 17 is 75% of the diameter of the reactor tank 4;

[0073] The pH of the mixed wastewater in the production process of a papermaking enterprise: 9-10; CODcr: 13000-15000mg / L; SS: 4000-5000mg / L, which belongs to high-concentration organic wastewater that is difficult to biodegrade. The method for treating the chemical wastewater by the reactor is the same as in Example 1. After 3 weeks of circulating treatment, the C...

Embodiment 3

[0075] A mechanical internal circulation jet flow anaerobic reactor of this embodiment has the same basic structure as that of Embodiment 1, except that the inclination angle of the PVC plate in the two-phase separator 5 is 50°, and the inclination angle of the two-phase separator 5 is The area below the surface accounts for 70% of the total volume of the entire reactor tank body 4; the overall height of the internal circulation jet 3 is 40% of the total height of the reactor tank body 4; Down 50°, the height of the jet port 13 is 1 meter, and the diameter of the steady flow port 17 is 60% of the diameter of the reactor tank body 4;

[0076] The pH of a leather enterprise's production process wastewater: 6-9; CODcr = 3000mg / L; ammonia nitrogen = 200mg / L, sulfur ion = 1000mg / L, where sulfur ion is combined with hydrogen ion in wastewater to form H 2 S is a highly toxic substance, which has a strong toxic effect on the biochemical system, especially the anaerobic system. The met...

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Abstract

The invention discloses a mechanical internal circulation jet-flow anaerobic reactor and a wastewater treatment method thereof, and belongs to the technical field of biological sewage treatment. The mechanical internal circulation jet-flow anaerobic reactor comprises a reactor tank body, a multi-phase separator, a water outlet weir and an internal circulation jet-flow device, wherein the internal circulation jet-flow device comprises an upper part and a lower part; the upper part comprises a jet-flow hole, a diffusion hole, a flow guide pipe and a flow stabilization hole; the lower part comprises a motor, a rotary shaft and high-speed blades. The wastewater treatment method comprises the following steps: forming a fluidized bed layer, forming a suspended bed layer, separating a separation region and discharging water from the water outlet weir. Due to the use of the internal circulation jet-flow device, the difficult problems of low treatment load, instable effect and relatively narrow application range in the treatment process of an existing conventional anaerobic reactor are solved; the mechanical internal circulation jet-flow anaerobic reactor has the advantages of high treatment load, good water impact resistance, high concentration of biological toxicity resistance matters, quick starting and the like.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, and in particular relates to a mechanical internal circulation jet flow anaerobic reactor and a method for treating waste water. Background technique [0002] With the development of industrial and agricultural production, environmental pollution is becoming more and more serious. High-concentration organic wastewater has received close attention from all walks of life because of its high COD concentration and serious pollution. For the treatment of high-concentration organic wastewater, anaerobic biological treatment technology has played a greater role. The anaerobic biological treatment technology has gone through three generations: by adding a sludge return device in the sedimentation tank, the sewage in the anaerobic reactor is increased. The concentration of mud formed the first generation reactor, that is, the anaerobic contact reactor; the second generation anaerobic r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
CPCC02F3/2833C02F3/2873
Inventor 刘波丁新春李爱民周德超陆鑫王德朋
Owner NANJING UNIV
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