Anaerobic sludge bed reactor and method for treating organic waste water by using same

Abstract

The invention discloses an anaerobic sludge bed reactor and a method for treating organic waste water by using the same. The anaerobic sludge bed reactor comprises a three-phase separator arranged on the top of the tank type reactor, wherein the three-phase separator comprises a gas liquid inclined plate separation module and a solid liquid inclined plate separation plate; a water outlet weir is arranged on the top of the solid liquid inclined plate separation plate; a separating baffle is arranged between the two inclined plate separation plates; waste water is pumped into a water inlet mother pipe by a material supply pump of the reactor, enters the reactor through a water-distributing distributor, flows upwards to biologically react with anaerobic bacteria through a sludge bed layer to generate a large amount of methane, and a large amount of methane is separated from the mixed liquid when the mixed liquid ascends to a gas liquid interface; the mixed liquid from which most part of methane is removed enters the gas liquid inclined plate separation module from the top of the gas liquid inclined plate separation module to realize gas liquid separation and partial solid liquid separation, and the methane flows upwards and is collected on the top of the reactor and is finally conveyed to a methane treatment unit through a methane pipeline to be treated; the mixed liquid from which gas is further separated enters the solid liquid inclined plate separation module to realize solid liquid separation. The three-phase separator is simple to process, the modules are small, price is low, and the anaerobic sludge bed reactor has remarkable advantages compared with the existing reactors.

Description

technical field [0001] The invention relates to an anaerobic sludge bed reactor and a method for treating organic waste water. Background technique [0002] At present, the more commonly used high-efficiency anaerobic treatment systems include internal circulation anaerobic reactor (IC), anaerobic upflow sludge bed filter (UBF), anaerobic baffle reactor (ABR) and UASB reactor, etc. A typical third-generation anaerobic reactor. [0003] The internal circulation anaerobic reactor (Internal Circulation, referred to as IC) is a high-efficiency anaerobic reactor successfully developed on the basis of the UASB reactor by the Dutch Paques company in the mid-1980s. The IC reactor is actually composed of the bottom and The upper two UASB reactors are stacked in series, including 4 different functional units: mixing part, expanded bed part, finishing part and reflux part. The IC reactor has the following characteristics: large height-to-diameter ratio, small footprint, low construct...

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Problems solved by technology

However, the existing problems are 1) the flocculent sludge cannot be used, and the system is easy to run out of sludge; 2) the three-phase separator of the IC reactor requires high processing precision and is expensive

ABR has a simple structure and does not require complex modular components in the reaction tank, so it does not have high requirements for the detailed design of the reactor; but there are still many problems, mainly: 1) In order to ensure a certain water flow and gas production rising speed, this As a result, the ABR reactor cannot be too deep. Under the same volume load, it occupies a large area and requires a large investment; 2) It is difficult to distribute the water in the ABR reactor evenly, and there are hydraulic dead angles and biological dead zones; 3) Due to the reaction concentration Gradually decreasing from high to low, the first compartment of the ABR reactor has to bear a local load much greater than the average load, unable to resist the impact load, and the operation is unstable

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