Reverse-flow type horizontal flow hydrogen substrate bio-membrane reactor based on carbon dioxide as carbon source

Abstract

The invention relates to a reverse-flow type horizontal flow hydrogen substrate bio-membrane reactor based on carbon dioxide as a carbon source. The reactor consists of a horizontal rectangular reactor box (5), a water inlet (2), a reflux water inlet (1), an overflow water outlet (9), a reflux water outlet (8), a sludge discharge opening (7), six interfaces (11) with inner threads on a box cover and six membrane assemblies providing H2 and CO2, wherein every two membrane assemblies are one group, third guide plates (6), second guide plates (4) and first guide plates (3) are sequentially arranged among every group of membrane assemblies and between the membrane assemblies and the water inlet (2); and the bottom of the first guide plate (3) is fixedly connected with the inner bottom wall of the reactor box, a channel is reserved in one side of the first guide plate (3), the bottoms of the other two guide plates are provided with channels, two sides are symmetrical and are fixedly connected with the front and back side walls of the box in a staggered manner so as to form symmetrical channels. The reactor disclosed by the invention is good in treatment effect, convenient to operate and maintain and low in cost, and easily treats oxidized contaminants in underground water on a large scale through engineering.

Description

technical field [0001] The present invention relates to a horizontal flow-reflux hydrogen matrix biofilm reactor using carbon dioxide as a carbon source, specifically using carbon dioxide as an inorganic carbon source, and using hydrogen autotrophic bacteria biofilm to treat sewage polluted by oxidized pollutants that are poor in carbon sources The invention discloses a horizontal flow backflow type hydrogen matrix biofilm reactor for purifying treatment, which belongs to the technical field of environmental engineering and municipal engineering sewage treatment. Background technique [0002] In many areas of our country, groundwater is seriously polluted by oxidized substances. These oxidized substances mainly include ionic compounds (such as nitrate, sulfate, bromate, etc.), oxidized heavy metals (Cr(VI)) and volatile organic substances (such as chloroform, p-nitrochlorobenzene, etc.). [0003] Hydrogen-matrix biofilm technology is an autotrophic biological reduction meth...

AI Technical Summary

Problems solved by technology

As hydrogen and carbon dioxide diffuse into the medium through the membrane pores, the gas pressure in the membrane filaments decreases rapidly along the process. When reaching a certain height, the gas pressure is lower than the surrounding water pressure, and water seeps into the membrane filaments. To the gas supply, affecting the normal operation of the reactor

[0006] 2. The above patents do not consider the collection and discharge of the shedding biofilm. In the actual operation process, with the growth cycle of microorganisms, the shedding biofilm slowly accumulates. If it is not effectively discharged, the effective volume of the reactor will be reduced. , while deteriorating the water quality of the effluent

[0007] 3. The completely mixed state of the liquid in the reactor in the above-mentioned patent is realized by a relatively high reflux ratio, which generally needs to reach more than 150 and consumes a lot of energy. It is impossible to realize in actual engineering, which limits its promotion in actual engineering applications

[0008] 4. In the above-mentioned patent, the membrane module is connected to the reactor box, and the off-line cleaning or replacement of the membrane module requires the disassembly of the reactor, which requires a large workload, and it is easy to damage the anoxic environment of the reactor, which affects the continuous and stable operation of the reactor

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