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Sewage desulfurization system and desulfurization method

A technology of sewage and water inlet branch pipes, which is applied in the direction of chemical instruments and methods, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. It can solve the problems of inability to meet the requirements of effluent indicators, complex treatment process and operation, and sulfide content. Instability and other problems, to achieve the effect of reducing sulfur removal cost, improving sulfur removal efficiency, and improving conversion rate

Pending Publication Date: 2022-03-25
KARAMAY SANDA NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ①The precipitation method is mainly through the metal cation and S 2 - The reaction produces sulfide precipitation, which will be discharged in the form of sludge through the action of flocculation, sedimentation and separation. This method involves the sedimentation and separation of sludge, which makes the treatment process and operation relatively complicated.
However, considering that the sulfide content in the treatment station system is unstable and the external discharge is large (300m 3 / h or more), only using the air oxidation method may cause incomplete removal of sulfide due to insufficient air volume, and thus cannot meet the requirements of the efflux index.

Method used

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  • Sewage desulfurization system and desulfurization method
  • Sewage desulfurization system and desulfurization method

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Embodiment 1

[0034] Such as figure 1 As shown, this embodiment provides a sewage desulfurization system 100, including a pretreatment unit 200, a mixing reaction unit 300, and a dosing unit 400. One end of the pretreatment unit 200 is used to communicate with the treatment station and to separate the sewage from solid and liquid. , and then separate the sewage from the insoluble matter therein, the other end of the pretreatment unit 200 communicates with one end of the mixing reaction unit 300, the sewage after solid-liquid separation enters the mixing reaction unit 300, and mixes and aerates in the mixing reaction unit 300 , increase the amount of air bubbles in the sewage, and then increase the contact area between the air and the sulfide in the sewage, and use the oxygen in the air to remove sulfur, which not only has low operating costs, but also does not cause any impact on equipment and pipelines, and improves the conversion of sulfide rate, the other end of the mixed reaction unit 3...

Embodiment 2

[0044] Such as figure 2 As shown, this embodiment provides a sewage desulfurization method, using the sewage desulfurization system 100 in Embodiment 1, including the following steps:

[0045] S1: Check the tightness of the connection of each valve, the switch is not blocked, and then make each valve in a closed state, and check that the pretreatment unit 200, the mixing reaction unit 300 and the dosing unit 400 can work normally;

[0046] S2: Start the main power supply, turn on the screw air compressor 8, inject compressed air into the air storage tank 10, introduce the sewage into the pretreatment unit 200, and conduct sedimentation and solid-liquid separation of the sewage through the pretreatment unit 200, Then the sewage is separated from the insoluble substances in it;

[0047] S3: start the centrifugal pump 4, introduce the sewage after solid-liquid separation into the pipeline mixer 12, then introduce the compressed air in the air storage tank 10 into the pipeline m...

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Abstract

The invention discloses a sewage sulfur removal system and method, and relates to the technical field of sewage treatment.The sewage sulfur removal system comprises a pretreatment unit, a mixed reaction unit and a dosing unit, one end of the pretreatment unit is used for being communicated with a treatment station and used for conducting solid-liquid separation on sewage, and the other end of the pretreatment unit is used for conducting chemical dosing; the other end of the pretreatment unit is communicated with one end of the mixed reaction unit, sewage subjected to solid-liquid separation enters the mixed reaction unit and is subjected to mixed aeration in the mixed reaction unit, the other end of the mixed reaction unit is communicated with the chemical feeding unit, and the chemical feeding unit is used for performing chemical desulfurization on the sewage subjected to mixed aeration. According to the sewage desulfurization system and the desulfurization method, the desulfurization efficiency can be improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage desulfurization system and a desulfurization method. Background technique [0002] At present, most oil wells use water injection to produce oil. Therefore, sulfur content has become a common feature of most oilfield sewage. Sewage containing sulfide cannot be directly discharged into the environment at will. Effective treatment of sewage is required to make the external drainage reach the national level. Discharge or recycling is allowed after discharge standards. h 2 S is a foul-smelling, highly toxic, and highly corrosive gas, and it is also one of the occupational hazards in the petroleum industry. h 2 S not only causes severe corrosion to oil pipelines, but also poses a serious safety hazard to the production in the operation area. It also causes serious corrosion damage to metal equipment and seriously threatens people's lives. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F103/10C02F101/10
CPCC02F9/00C02F2103/10C02F2101/101C02F7/00C02F1/74C02F1/72C02F2001/007
Inventor 邓焱伟李霞倪小龙达文泽马超李荣何帆丁伟杰杨天宇谭超周毓江何菲
Owner KARAMAY SANDA NEW TECH
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