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Integrated two-phase anaerobic desulfurization reactor and its wastewater treatment method

An integrated technology for wastewater treatment, applied in anaerobic digestion treatment, chemical instruments and methods, biological water/sewage treatment, etc. Unreasonable structure and other problems, to achieve the effect of increasing mud-water mixing effect, good mud-water mixing state, and small footprint

Active Publication Date: 2019-03-01
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the prior art, the high concentration of sulfate radicals in the process of treating wastewater in the two-phase anaerobic reactor will inhibit microorganisms, the desulfurization phase and the methanogenic phase cannot be separated independently, the reactor is not strong in shock load resistance, and the produced H 2 S cannot be effectively discharged, the structure of the reactor is unreasonable, and the occupied area is large. The present invention provides an integrated two-phase anaerobic desulfurization reactor and its wastewater treatment method.

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  • Integrated two-phase anaerobic desulfurization reactor and its wastewater treatment method

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Embodiment 1

[0039] An integrated two-phase anaerobic desulfurization reactor in this embodiment includes a desulfurization reaction pool and a methanation reaction pool, and also includes a water-sealed tank 5 and a tail gas treatment unit 6; the desulfurization reaction pool and the methanation reaction pool are integrated According to the structure, the wastewater enters the desulfurization reaction pool and the methanation reaction pool to be treated sequentially. The desulfurization reaction pool and the methanation reaction pool are separated by the partition wall 7 and connected through the outlet weir. The gas produced by the desulfurization reaction pool and the methanation reaction pool enters the water-sealed tank 5 after being collected by the biogas collection main pipe 501; the tail gas in the upper layer of the water-sealed tank 5 is passed into the tail gas treatment unit 6 through a pipeline; the tail gas treatment unit 6 includes Desulfurization unit and biogas storage uni...

Embodiment 2

[0045] A kind of integrated two-phase anaerobic desulfurization reactor of the present embodiment, such as figure 1 As shown, the desulfurization reaction pool and the methanation reaction pool are two-stage, respectively, the first-level desulfurization reaction pool 1, the second-level desulfurization reaction pool 2, the first-level methanation reaction pool 3 and the second-level methanation reaction pool 4. The sludge in the two-stage desulfurization reaction tank can be flocculent sludge, and the sludge concentration is 8kg VSS / m 3 , the sludge in the two-stage methanogenic reaction tank is granular sludge, and the sludge concentration is 20kg VSS / m 3 and are all provided with a water distribution area and a reaction area, which are respectively the water distribution area 103 of the first-level desulfurization reaction pool and the first-level desulfurization reaction area 113, the water distribution area 203 of the second-level desulfurization reaction pool and the sec...

Embodiment 3

[0051] An integrated two-phase anaerobic desulfurization reactor in this embodiment has the same basic structure as that in Embodiment 2, and the improvement is that a water inlet rectification area 102 is provided in front of the desulfurization reaction tank, and the waste water enters the water inlet rectification area 102 for rectification Then it enters the water distribution area 103 of the primary desulfurization reaction pool through the outlet weir to ensure the stability of the water flow. The bottom of the two-stage desulfurization reaction pool is also provided with a biogas aeration head (respectively, a biogas aeration head 110 for a first-level desulfurization reaction pool, and a biogas aeration head 210 for a second-level desulfurization reaction pool). The reaction pool water distribution area 103 and the secondary desulfurization reaction pool water distribution area 203) are arranged on the opposite side, and are connected to the tail gas treatment unit 6 th...

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Abstract

The invention discloses an integrated two-phase anaerobic desulfurization reactor and a wastewater treatment method thereof and belongs to the field of wastewater treatment devices.The integrated two-phase anaerobic desulfurization reactor comprises a desulfurization reaction tank and a methane-producing reaction tank which are of an integrated structure, wastewater enters the desulfurization reaction tank and the methane-producing reaction tank and is processed sequentially, and the desulfurization reaction tank and the methane-producing reaction tank are separated by a separation wall and communicated by an effluent weir.According to the wastewater treatment method of the integrated two-phase anaerobic desulfurization reactor, the integrated two-phase anaerobic desulfurization reactor can be applied to treatment of high-concentration sulfate wastewater and high-concentration organic wastewater by single reaction step of desulfurization action and methane production reaction and has the advantages that the desulphurization efficiency is high, the resistance to impact load is high, the mixing state is good, and the occupied area is small.

Description

technical field [0001] The invention belongs to the field of wastewater treatment devices, and in particular relates to an integrated two-phase anaerobic desulfurization reactor and a wastewater treatment method thereof. Background technique [0002] Many industrial wastewaters usually contain high concentrations of sulfates, sulfites and sulfides, such as edible oil refining wastewater, potato starch production wastewater, pulping wastewater and papermaking wastewater, etc. This type of wastewater also contains high concentrations of organic matter , usually require anaerobic treatment. High concentrations of sulfate and sulfite will have a serious impact on the anaerobic methanogenic stage. For example, when the concentration of sulfite in water exceeds 150-200mg / L, it will have a serious inhibitory effect on methanogens. Therefore, it is usually necessary to use sulfate-reducing bacteria (SRB) to convert high-concentration sulfate in wastewater into H 2 S, so that the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
CPCC02F3/286C02F2101/101Y02E50/30
Inventor 汪林陈良张炜铭吕路石家杰李丽芳赵昕
Owner NANJING UNIV
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