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Treatment process of boiler dusting water

A boiler and treatment system technology, applied in the field of industrial wastewater treatment, can solve the problems of high concentration of turbidity suspended solids and CODcr in dust removal wastewater, affecting the environmental sanitation of the factory area, and inconvenient operation, etc., and achieves easy promotion, low cost, and convenient external use The effect of luck

Inactive Publication Date: 2013-02-06
SHANXI UNIV
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Problems solved by technology

After the soot generated by the boiler is treated by the wet dedusting equipment, although the soot has been purified, the concentration of turbidity, suspended solids and CODcr in the dedusting wastewater is high, and the discharge volume is large
At present, the treatment of boiler dedusting water mainly adopts simple sedimentation treatment, and the plaster settled on the bottom of the tank is grabbed and separated from the water by a grab crane. This method has high investment, poor effect, and inconvenient operation, which affects the factory area. The environment is hygienic, and due to limited conditions, only a small part of the boiler dust removal water is recycled for boiler dust removal, and most of the rest are discharged after simple sedimentation treatment, which not only wastes water, but also seriously pollutes the environment

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  • Treatment process of boiler dusting water
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Embodiment Construction

[0017] A treatment system for boiler dedusting water, comprising an advection ash settling tank and a clear water tank, the advection ash settling tank, such as figure 1 As shown, it is divided into rectification area 2, sedimentation area 5 and water outlet area 9; rectification wall 3 is set between rectification area 2 and sedimentation area 5; slag blocking wall 8 is set between sedimentation area 5 and water outlet area 9 The water passage hole 7; the sedimentation area 5 is equipped with a driving type mud scraper 6, the upper part of the head end of the sedimentation area 5 is equipped with a slag collection tank 4, the lower part is equipped with a mortar bucket 11, and a sludge discharge pump 12 is installed in the mortar bucket 11;

[0018] The surface load used in the advection ash settling tank is 0.7m 3 / m 2 h, the hydraulic retention time is 3.0h, the aspect ratio of the advection ash settling tank is 4.2, and the aspect ratio is 10.0.

[0019] A treatment proc...

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Abstract

The invention provides a treatment process of boiler dusting water, which comprises the steps as follows: the boiler dusting water enters an advection dust settling basin to be subjected to settling treatment; supernatant fluid enters a clean water basin to be recycled for boiler dusting; dust sludge deposited at the bottom of the advection dust settling basin is scrapped by a sludge and slag scraper into a dust sludge bucket and then is lifted and conveyed by a submersible sludge pump to a sand-water separator; floating slag on the liquid level of the advection dust settling basin is scrapped by the sludge and slag scraper into a slag collection tank and then enters the sand-water separator through a slag discharge pipe to be separated; separated water flows back to the advection dust settling basin; and dust sludge is discharged to a dust sludge field.

Description

Technical field: [0001] The invention relates to the treatment of industrial waste water, in particular to a treatment process for boiler dedusting water. Background technique: [0002] At present, there are more than 500,000 industrial boilers and domestic coal-fired boilers in my country, and about 30-40% of these boilers are equipped with wet dust removal equipment. After the flue dust produced by the boiler is treated by the wet dust removal equipment, although the flue dust has been purified, the concentration of turbidity, suspended solids and CODcr in the dust removal wastewater is high, and the discharge volume is large. At present, the treatment of boiler dedusting water mainly adopts simple sedimentation treatment, and the plaster settled on the bottom of the tank is grabbed and separated from the water by a grab crane. This method has high investment, poor effect, and inconvenient operation, which affects the factory area. The environment is hygienic, and due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02
Inventor 李日强徐建红常雨
Owner SHANXI UNIV
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