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Synergistic processing device and method of ship waste gas washing waste liquid and ship sanitary sewage

A domestic sewage and exhaust gas washing technology, which is applied in biological treatment devices, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as increased operating costs, prevent secondary pollution, save ship space and Operating cost, effect of solving carbon source shortage

Active Publication Date: 2019-10-11
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional biological desulfurization treatment method is represented by the sulfate reduction process, which needs to add additional organic matter to supply sulfate-reducing bacteria as a carbon source, and its operating cost is greatly increased; in the conventional biological denitrification treatment method, heterotrophic denitrification Mainly, heterotrophic denitrifying bacteria reduce nitrate and nitrite to nitrogen in the presence of organic matter. This process still needs to add a large amount of organic carbon as a carbon source
Therefore, the addition of additional carbon sources has become the main factor limiting the application of anaerobic biological methods on ships

Method used

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  • Synergistic processing device and method of ship waste gas washing waste liquid and ship sanitary sewage

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Embodiment 1

[0047] This embodiment provides a device and method for co-processing ship exhaust gas washing waste liquid and ship domestic sewage. The co-processing device includes a reactor shell 17, which is provided with a liquid inlet I8, a liquid inlet II2 and a liquid outlet 6, and the reactor shell 17 is provided with a heterotrophic reaction zone 12 connected in sequence. , the buffer zone 13 and the autotrophic reaction zone 14, the volume of the heterotrophic reaction zone 12 and the autotrophic reaction zone 14 is the same, the overflow port 16 is provided with the buffer zone 13 on the top of the heterotrophic reaction zone 12 and communicates with the buffer zone 13, and the overflow port 16 is vertical The height is 1.5cm, the lower part of the buffer zone 13 communicates with the autotrophic reaction zone 14, and the upper ends of the heterotrophic reaction zone 12 and the autotrophic reaction zone 14 are all provided with vent holes 3; The liquid port II2 is connected with ...

Embodiment 2

[0055] This embodiment provides a device and method for co-processing ship exhaust gas washing waste liquid and ship domestic sewage. The co-processing device includes a reactor shell 17, which is provided with a liquid inlet I8, a liquid inlet II2 and a liquid outlet 6, and the reactor shell 17 is provided with a heterotrophic reaction zone 12 connected in sequence. , the buffer zone 13 and the autotrophic reaction zone 14, the volume of the heterotrophic reaction zone 12 and the autotrophic reaction zone 14 is the same, the overflow port 16 is provided with the buffer zone 13 on the top of the heterotrophic reaction zone 12 and communicates with the buffer zone 13, and the overflow port 16 is vertical The height is 1.5cm, the lower part of the buffer zone 13 communicates with the autotrophic reaction zone 14, and the upper ends of the heterotrophic reaction zone 12 and the autotrophic reaction zone 14 are all provided with vent holes 3; The liquid port II2 is connected with ...

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Abstract

The invention relates to a synergistic processing device and method of ship waste gas washing waste liquid and ship sanitary sewage. Ship diesel engine waste gas desulfuration washing waste liquid andsanitary sewage are pumped into the bottom of a heterotroph reaction area through a water pump, sulfate reduction reaction and degradation reaction of organic matter with protein as the main part areconducted in the heterotroph reaction area, products overflow to a buffering area from the top end after reaction, meanwhile ship waste gas desulfuration washing waste liquid is pumped into a water inlet in the upper end of the buffering area and mixed with outlet water of a front area, and then the mixed liquid enters an autotrophy reaction area from the bottom of the buffering area, makes sufficient contact with activated sludge in the autotrophy area, has the combined reaction of autotrophy desulfuration and denitrification and anaerobic ammonia oxidation and is then discharged out of a water outlet in the upper end. By means of the method, a reaction device stably operates under the high load conditions, and the efficient and synchronous removing of sulfate and nitrite in the ship waste gas washing waste liquid and organic matter in the ship sanitary sewage is realized.

Description

technical field [0001] The invention relates to a device and method for treating waste gas desulfurization and denitrification washing liquid of marine diesel engines, in particular to a device and a method for synergistic treatment of waste liquid of marine exhaust gas washing and domestic sewage of ships. Background technique [0002] With the development of international trade, harmful exhaust emissions from marine diesel engines are becoming more and more serious. Therefore, it is urgent to research and develop ship exhaust gas treatment technology to deal with such pollution. In the desulfurization and denitrification technology of marine diesel engine exhaust gas, the open method in the wet treatment method is often used, that is, seawater is used to absorb sulfur oxides and nitrogen oxides in the exhaust gas, thereby producing sulfate, sulfite, nitrate and nitrous acid. Salt washing waste liquid, its salt content is extremely high. According to the relevant regulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34C02F101/10C02F101/16C02F101/30C02F101/38C02F103/18
CPCC02F3/286C02F3/34C02F3/345C02F3/2866C02F2101/101C02F2101/166C02F2101/30C02F2101/38C02F2103/18C02F2203/004C02F2305/06C02F2101/16
Inventor 李巍梁霄刘佳敏
Owner DALIAN MARITIME UNIVERSITY
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