Anaerobic reactor capable of controlling methane mixing quantity

Abstract

The invention discloses an anaerobic reactor capable of controlling methane mixing quantity. A purification water outlet pipe (2) for discharging clear water processed by the anaerobic reactor (1) is arranged at the upper end of the anaerobic reactor (1); a waste water inlet pipe (3) for waste water to enter the anaerobic reactor (1) is arranged at the lower end of the anaerobic reactor (1); and a sludge bulking bed (4) is arranged in the anaerobic reactor (1). The anaerobic reactor is characterized in that a methane inlet pipe (5) controlled by a valve is arranged at the lower end of the anaerobic reactor (1); the methane inlet pipe (5) is communicated with the lower end of the anaerobic reactor (1); and the height of a gas outlet of the methane inlet pipe (5) is smaller than the largest height of the sludge bulking bed (4). As the anaerobic reactor adopts generated methane for mixing gas, equipment is simple, the input is very small, the maintenance quantity is small, the power consumption is low, the running cost is low, and the service life of the equipment is long.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an anaerobic reactor with controllable biogas stirring volume. Background technique [0002] Anaerobic biological treatment uses the metabolic characteristics of anaerobic microorganisms to use the reduced organic matter as a hydrogen acceptor without providing external energy, and at the same time produce methane gas with energy value. Anaerobic biological treatment is not only suitable for high-concentration organic wastewater, the highest concentration of influent BOD can reach tens of thousands of mg / l, but also for low-concentration organic wastewater, such as urban sewage. [0003] Anaerobic reactor is an efficient biofilm treatment method. After the temperature of the wastewater is controlled and stabilized, the quantitative wastewater is sent to the rotary water distributor set at the bottom of the reactor through the lift pump. Since the design of ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an anaerobic reactor with a controllable amount of biogas stirring, which solves the problems of poor sludge bulking effect caused by local dead zones in the anaerobic reactor and poor anaerobic treatment effect of sewage in the prior art.

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