Bi-circulating multistage anaerobic reaction device

Abstract

The invention discloses a double-cycle multi-stage anaerobic reaction device, which includes two anaerobic reactors, the anaerobic reactors include a container body (15), and the container body (15) is arranged sequentially from bottom to top. There are water distributor (2), water inlet pipe (1) leading to water distributor (2), primary three-phase separator (3), secondary three-phase separator (6), outlet pipe (11) and rotary Flow gas-liquid separator (10), the top of the cyclone gas-liquid separator (10) is provided with a biogas outlet pipe (8) leading to the outside, and a water distributor (2) and a three-phase separator (3) are provided A fluidized bed reaction chamber (14), a deep purification reaction chamber (4) is provided between the primary three-phase separator (3) and the secondary three-phase separator (6). The invention has both internal circulation and external circulation, and has the advantages of power saving, less sludge, high treatment volume load rate, space saving, strong impact load resistance, etc., and is suitable for high-concentration and low-concentration organic industrial wastewater.

Description

technical field [0001] The invention belongs to sewage treatment equipment, in particular to a double-cycle multi-stage anaerobic reaction device. Background technique [0002] High-concentration organic wastewater is a major industrial pollution source that is difficult to treat, with high COD concentration. Conventional high-concentration organic wastewater treatment equipment includes UASB anaerobic reactors, anaerobic biological filters, etc., all of which have problems such as large investment, high operating costs, and poor treatment effects. This technical bottleneck restricts the popularization and application of traditional wastewater treatment technologies . [0003] The following are the public documents we found about the anaerobic reaction device: [0004] 1. Application number: 02282323.9, utility model name: internal circulation anaerobic expanded bed / fluidized bed reactor, the main technical feature of this reactor is that the gas-liquid separation zone and...

AI Technical Summary

Problems solved by technology

The patented reactor can still form an internal circulation, but the structure is greatly simplified, the clogging problem is effectively alleviated, and the introduction of the carrier solves the problem of low ascending flow rate

However, the disadvantages of this patent are: the carrier current consumes a lot of energy, and the design requirements of the system are high

[0005]2. Application number: 200610122737.6, invention name: two-phase integrated multi-level internal circulation anaerobic bioreactor, the reactor is equipped with multi-layer internal circulation technology device , so that the fluid is in a good fluidized state. Compared with the traditional anaerobic reactor, its treatment effect has the following advantages: small footprint; high load rate, strong impact load resistance, high treatment efficiency, stable operation treatment effect, etc.; but The disadvantages of this patent are: the lack of external circulation, the pH value needs to be adjusted for wastewater with high difficulty and low pH value, and the operating cost is high

However, the disadvantage of this patent is that it lacks external circulation, and the pH value needs to be adjusted for wastewater with high difficulty and low pH value, and the operating cost is high.

However, the disadvantages of this patent are: the start-up speed of the device is slow, the treatment efficiency is not high, and the external circulation is lacking. For the wastewater with high difficulty and low pH value, the pH value needs to be adjusted, and the operating cost is high.

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