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Wet-flue-gas desulfurization washing water treatment system and method of ships

A technology of wet flue gas desulfurization and washing water, which is applied in the direction of gaseous effluent wastewater treatment, multi-stage water treatment, water/sewage treatment, etc. Meet the restriction requirements, blockage of resin adsorption column and other problems, achieve high removal rate of suspended solids, stable removal effect, and reduce the effect of adsorption load

Pending Publication Date: 2017-09-05
北京航天环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to this type of method, the desulfurization wastewater is controlled to be neutral to alkaline, and there is no pH adjustment process, resulting in low oxidation efficiency and large aeration volume
It is difficult for the cyclone separator to meet the limitation requirements of its effluent for suspended solids, and at the same time, it may block the subsequent resin adsorption column, and there is no mention of the regeneration and disposal of the adsorption column

Method used

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  • Wet-flue-gas desulfurization washing water treatment system and method of ships
  • Wet-flue-gas desulfurization washing water treatment system and method of ships

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Embodiment 1

[0053] This embodiment provides a ship wet flue gas desulfurization washing water treatment system, such as figure 1 As shown, it includes: an iron-carbon micro-electrolysis flocculation reactor 1, a vertical flow air flotation tank 14, a first sand filter 7, an adsorbent adsorber 17 and a clarified water tank 19.

[0054] The bottom of the iron-carbon micro-electrolysis flocculation reactor 1 is provided with a first water inlet and an aeration inlet, and the top is provided with a first water outlet. The washing water enters the iron-carbon micro-electrolysis flocculation reactor 1 through the first water inlet, and the aeration enters The air port is connected to the air outlet of the first blower 2, and the iron-carbon micro-electrolysis flocculation reactor 1 is used for aeration, micro-electrolysis oxidation reaction in the iron-carbon area and flocculation reaction in the micro-vortex flocculation area sequentially from bottom to top. The washing water first enters the ...

Embodiment 2

[0072] This embodiment provides a ship wet flue gas desulfurization washing water treatment method, which is suitable for the ship wet flue gas desulfurization washing water treatment system in embodiment 1, including the following steps:

[0073] S1. The washing water enters the iron-carbon micro-electrolysis flocculation reactor 1 through the first water inlet, and the aeration inlet is fed into the air, and the aeration device is used for continuous and uniform aeration;

[0074] S2. The iron-carbon zone and the micro-vortex flocculation zone of the iron-carbon micro-electrolysis flocculation reactor 1 perform micro-electrolysis oxidation reaction and flocculation reaction on the flowing water in sequence, and then the water flows out from the first water outlet and passes through the vertical flow air flotation tank 14 The bottom water inlet flows into the vertical flow air flotation tank 14;

[0075] S3. The vertical flow air flotation tank 14 uses low-temperature seawate...

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Abstract

The invention relates to a wet-flue-gas desulfurization washing water treatment system and method of ships and belongs to the technical field of wastewater treatment. The system comprises an iron carbon micro-electrolysis flocculation reactor, a vertical flow gas tank, a first sand filter and an adsorbent adsorber; the iron carbon micro-electrolysis flocculation reactor is used for sequentially performing aeration, micro-electrolysis oxidation reaction of an iron carbon area and flocculation reaction of a microvortex flocculation area from bottom to top; the vertical flow gas tank takes low-temperature seawater as dissolved-gas water used for removing most of suspensions and oil; the first sand filter is used for filtering and intercepting the suspensions from top to bottom; the adsorbent adsorber is used for performing adsorption and the like from bottom to top. Removal of COD, heavy metal ions, the suspensions, turbidity, polycyclic aromatic hydrocarbon, and oil in wet-flue-gas desulfurization washing water of the ships is completed, washing-water effluent standard regulated by IMO (international maritime organization) is conformed, and the system and method has the advantages of small space occupation and high integration and automation.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a ship wet flue gas desulfurization washing water treatment system and method. Background technique [0002] Ship flue gas desulfurization washing water is the sewage generated during the wet desulfurization process of flue gas emitted by marine diesel engines. At present, the wet flue gas desulfurization methods of marine diesel engines are mainly magnesium method and sodium method. No matter what kind of desulfurization agent is used in the desulfurization process, desulfurization washing wastewater is bound to be generated. At present, the International Maritime Organization (IMO) puts forward strict requirements on the discharge of washing water from the ship's desulfurization exhaust gas cleaning system, and stipulates the limits of pH, SS, turbidity, temperature, polycyclic aromatic hydrocarbons, etc. in the external drainage, so the flue gas desulfurization wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/18C02F101/32
CPCC02F9/00C02F2103/18C02F2101/327C02F2101/32C02F2301/08C02F1/24C02F1/28C02F1/283C02F1/001C02F1/46104C02F1/4672C02F1/463
Inventor 李刚吴雅菲范博张宏策秦少鹏
Owner 北京航天环境工程有限公司
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