Biological desulphurization processing reactor, biological desulphurization processing system, and processing method

Abstract

The invention provides a biological desulphurization processing reactor, a biological desulphurization processing system, and a processing method. The reactor comprises a three phase separator and a reaction zone. The reaction zone comprises an outer cylinder, a gas guiding cylinder and a lower flow guiding cylinder, such that the reaction zone is separated into an air-lift zone, an anoxic zone, and a descent zone. The three phase separator comprises an outer frustum, an inner inverted frustum, an outer sedimentation tank, an inner sedimentation tank, and an overflow groove, such that the three phase separator is separated into three sedimentation zones. Sulfide-containing wastewater is mixed with oxygen-containing water from the air-lift zone in the anoxic zone; under the effect of immobilized microorganisms, the sulfide is partially oxidized into elementary sulfur; the mixture is delivered through the three phase separator arranged above, such that the immobilized carrier is separated from a water phase and a gas phase, and sulfur particles flow out with water. According to the invention, with the structure of the reactor and the processing method, a good fluidized state is maintained, and the loss of the immobilized carrier is inhibited. The reactor, the system and the method are advantaged in high elementary sulfur production rate, good processing capacity, hydraulic load impact resistance, substrate load impact resistance, simple structure, and easy amplification.

Description

technical field [0001] The invention belongs to the field of environmental engineering, and relates to equipment and technology for biological desulfurization treatment of sulfide-containing liquids, in particular to a biological desulfurization treatment for sulfide-containing wastewater or tail gas of chemical plants and natural gas dehydrogen sulfide absorption liquid A reactor, a biological desulfurization treatment system and a treatment method. Background technique [0002] Hydrogen sulfide is a foul-smelling, highly toxic and highly corrosive acidic gas, which can cause death within a short period of time if inhaled in a small amount, and is highly corrosive to metals and cement and other materials. Natural gas and biogas are green and clean energy, which often contain a certain amount of hydrogen sulfide, and must undergo desulfurization treatment before pipeline transportation. my country is rich in sulfur-containing natural gas reserves, and natural gas reserves w...

AI Technical Summary

Problems solved by technology

At present, biological desulfurization equipment and processes cannot meet the above two requirements at the same time

Traditional air-lift reactors are designed for aerobic processes. In order to obtain higher dissolved oxygen and oxygen mass transfer rates, high aeration rates are often used. The reactor structure mostly uses a single air guide cylinder or multi-layer air distributor. This structure is used in Low circulation efficiency under low ventilation and oxygen-limited conditions

In addition, more importantly, since there is no effective solid-gas-liquid three-phase separator, the solid residence time is short and the loss of immobilized carrier is serious

[0008] In addition, the biological filter bed is the main equipment for biological desulfurization. The fixed packing causes the generated elemental sulfur to stay in the reactor, which not only increases the difficulty of elemental sulfur separation and purification, but also has the problem of elemental sulfur clogging. The equipment cannot be operated for a long time and the processing capacity is limited. , cannot meet the needs of large-scale biological desulfurization of natural gas or biogas

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