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Multistage self circulation anaerobic digestion reactor and work method thereof

An anaerobic digestion and reactor technology, applied in anaerobic digestion treatment, chemical instruments and methods, multi-stage water treatment, etc., can solve the problem of low rising flow rate, low reactor efficiency and low mass transfer efficiency of anaerobic digestion reactor and other problems, to achieve the effect of superior mass transfer effect, good controllability and high volume load

Pending Publication Date: 2018-09-04
南宁绿智环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this type of anaerobic digestion reactor has a low ascending flow rate, low mixing and mass transfer efficiency, and the gravity causes sludge to be deposited at the bottom, especially sewage with high solid content, which is of high-concentration water quality, poor biodegradability, and more scum. The application of this type of reactor is very inefficient and the volumetric loading is low

Method used

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  • Multistage self circulation anaerobic digestion reactor and work method thereof
  • Multistage self circulation anaerobic digestion reactor and work method thereof
  • Multistage self circulation anaerobic digestion reactor and work method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A multi-stage self-circulating anaerobic digestion reactor, the reactor includes a reactor including a tank body 1, an external circulation pump 6, a pipeline jet 28, an internal air-water separator 7, a top air-water separator 8, a first-stage three Phase separator 9, secondary three-phase separator 10, inner deflector 26, middle deflector 27, air-water separation baffle 41, slag retainer 42, overflow port 40, outlet weir 43, control system 48; Primary internal circulation nozzle 11, primary external circulation nozzle 12, secondary external circulation nozzle 13, secondary internal circulation nozzle 14, water inlet nozzle 15, first air lift riser 16, second air lift riser 97, backflow Pipe 17, air intake pipe 18, primary external circulation outlet pipe 19, secondary external circulation outlet pipe 20, primary external circulation inlet pipe 21, secondary external circulation inlet pipe 22, water inlet pipe 38, U-shaped outlet pipe 44, drain Empty port 45, drainage ...

Embodiment 2

[0052] The working method of described multistage self-circulation anaerobic digestion reactor,

[0053] During operation, the raw slag water is controlled by the opening and closing of the water inlet valve 36, and the water inlet nozzle 15 connected to the water inlet pipe 38 enters the water distribution mixing area 2. The water inlet is continuous water inlet or pulse water inlet, and the reactor is In combination with working conditions and water quality characteristics, it can adopt multi-stage internal self-circulation anaerobic digestion operation mode, external power-assisted multi-stage self-circulation anaerobic digestion operation mode or external power-assisted enhanced multi-stage self-circulation anaerobic digestion operation Any one of the modes or two or three alternate operating modes;

[0054]When the reactor works in the multi-stage internal self-circulation anaerobic digestion operation mode, the water inlet valve 36 is opened, and the raw slag water is in...

Embodiment 3

[0058] The water distribution mixing zone 2 is set from the lower part of the primary three-phase separator 9 in the primary reaction zone 3 to the bottom of the tank body 1, accounting for 1 / 8-1 / 6 of the height of the tank body 1, and is arranged in sequence from the center of the tank body 1 outward. There are inner swirling mixing area 23, middle swirling mixing area 24, and outer swirling mixing area 25. Internal swirling mixing area 23 and middle swirling mixing area 24 are provided with inner deflector 26 and middle deflector 27 respectively, and inner deflector 26 and The middle deflectors 27 are arc-shaped with the same center as the tank body 1, the number of the inner deflectors 26 and the middle deflectors 27 are ≥ 2 groups, and the lengths of the inner deflectors 26 and the middle deflectors 27 are ≤ 1 / 4 circle, the angle between the inner deflector 26 and the middle deflector 27 is arranged at an angle of ≤90°, they are evenly arranged in opposite directions, the i...

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Abstract

The invention discloses a multistage self circulation anaerobic digestion reactor. A first-stage three-phase separator and a second-stage three-phase separator of the reactor are fixedly arranged in atank body; both of the first-stage three-phase separator and the second-stage three-phase separator are in conical shapes with the big diameter ends at the lower side and the small diameter ends at the upper side; the second-stage three-phase separator is positioned above the first-stage three-phase separator; a primary reaction region is formed under the first-stage three-phase separator; a space from a position under the primary reaction region to the tank bottom is a water distribution mixing region; a secondary reaction region is formed between the first-stage three-phase separator and the second-stage three-phase separator; a space between the second-stage three-phase separator and the top of the tank body is a precipitation water outlet region. The external power assists multistagecirculation; marsh gas jet flow is used to enter each stage of reaction regions; the mass transfer and flow speed controllability is high; the gas liquid density difference in the reaction region is reinforced; the circulation, mixing and stirring functions of the system are fast enhanced; the sediment deposition is prevented; the multistage self circulation anaerobic digestion reactor is suitablefor the anaerobic fermentation of high-solid-content sewage; the treatment effect and efficiency of water quality with poor biodegradability and high concentration can be improved.

Description

technical field [0001] The invention relates to a reaction device for anaerobic digestion treatment of sewage with high solid content, belonging to the technical field of anaerobic digestion reaction, in particular to a multistage self circulating anaerobic digestion reactor (M-SC reactor). technical background [0002] For anaerobic digestion reactors for high-solid sewage, conventional anaerobic reactors (CADT), fully mixed reactors (CSTR), anaerobic contact digesters (ACP), and upflow fixed-bed reactors have been developed. (USR), plug flow reactor (PFR) and other forms. This type of anaerobic digestion reactor has a simple structure and is more convenient to operate. It can be stirred by rising water flow and biogas, or a stirring device can be installed for mass transfer to achieve The purpose of degrading pollutants. [0003] However, this type of anaerobic digestion reactor has a low ascending flow rate, low mixing and mass transfer efficiency, and the gravity cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
CPCC02F3/28C02F3/2866C02F3/2873C02F2301/08C02F2301/046C02F2203/006Y02E50/30
Inventor 卢誉远林应强熊庆明周淑珍林叶俊龙
Owner 南宁绿智环保科技有限公司
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