Installation method and device of submersible mixer for anaerobic reactor

Abstract

The invention relates to an installation device of a submersible mixer for an anaerobic reactor. The device comprises a tank wall, a manhole, guide rods, a connecting bracket, safety covers and the like, wherein a plurality of guide rods are installed at a position close to the tank wall inside the anaerobic reactor according to the amount of the submersible mixer, lower limiting positions of the submersible mixer are welded at certain heights on the guide rods, the safety covers for preventing methane from escaping out are arranged on the upper portions of the guide rods, fixed pulleys for lifting the submersible mixers are installed below the safety covers on the guide rods, a manual capstan for lifting the submersible mixers is arranged on the inspection manhole, and a cable discharging device provided with water seal is adopted for leading cables out of the anaerobic reactor so as to prevent the methane from escaping. According to the installation method, a submersible pump can be installed inside the anaerobic reactor conveniently, and the problem that the submersible mixer cannot be applied to the anaerobic reactor is solved.

Description

technical field [0001] The invention relates to the fields of environmental protection engineering and new energy, especially the field of anaerobic treatment in water treatment engineering and biogas engineering in biomass energy, and provides a set of devices and installation methods for installing a submersible mixer in an anaerobic reactor Background technique [0002] Due to its energy saving and high treatment efficiency, the anaerobic process can generate clean energy—biogas while eliminating pollution. It is increasingly used in sewage treatment and bioenergy projects. Most anaerobic reactors use mechanical agitation to mix microorganisms and feed liquids. The commonly used mechanical agitation methods include vertical mixers, oblique-entry mixers, and side-entry mixers. These commonly used mixing equipment have a common feature: the motor and mixer that provide power are outside the reactor, and the blades inside the reactor are driven through the transmission devic...

AI Technical Summary

Problems solved by technology

The main shortcomings found in the operation of these mixers are: ①The sealing device between the tank body and the reducer is a vulnerable part, which is easy to cause leakage, waste energy, and cause danger

Once the sealing device needs to be repaired or replaced, it needs to be shut down and the biogas and feed liquid should be drained, which is very difficult to repair

②The motor that provides the power needs special protection, otherwise there is a risk of explosion. ③The equipment is usually heavy, difficult to install, and the reactor is easy to deform during installation or operation. Empty biogas and feed liquid ⑤ Inefficient, waste of electricity ⑥ High cost, large one-time investment

The current status restricts the application of submersible mixers in completely closed anaerobic reactors

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