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Tinpot heavy oil refinery sewage treatment device

A technology for low-quality heavy oil and refinery sewage, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Problems such as sewage exceeding the standard

Inactive Publication Date: 2013-06-19
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since 2007, with the sharp increase in the processing of low-quality heavy oil, the volume of refinery sewage has risen sharply, and the composition of pollutants has become more complex. The physical and chemical sections and biochemical sections of the original sewage field have been severely impacted, which eventually led to the discharge of sewage exceeding the standard

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  • Tinpot heavy oil refinery sewage treatment device
  • Tinpot heavy oil refinery sewage treatment device
  • Tinpot heavy oil refinery sewage treatment device

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Experimental program
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Embodiment Construction

[0024] The inferior heavy oil refinery sewage treatment device of the present invention is composed of a physical and chemical treatment system and a biochemical treatment system. The physical and chemical treatment system consists of a regulating deoiling tank, a settling deoiling tank, an inclined plate grease trap, and a primary dissolved air flotation treatment tank. The secondary dissolved air flotation treatment tank (Dissloved Air Floatation, DAF) is connected in series; the biochemical treatment system consists of a primary anaerobic hydrolysis acidification tank, a circulating activated sludge process (Cyclic Activated Sludge Technology, CAST) tank, The anaerobic hydrolysis acidification tank, biological aerated filter (Biological Aerated Filter, BAF) - Lamera sedimentation tank are sequentially connected in series.

[0025] The process flow is as follows:

[0026] (1) Inferior heavy oil refinery sewage is collected by the pipeline and lifted into the regulating oil r...

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Abstract

The invention relates to a tinpot heavy oil refinery sewage treatment device. The device comprises a physicochemical treatment system and a biochemical processing system. The device is characterized in that the physicochemical treatment system comprises a regulating oil removal tank, a sedimentation oil removal tank, an inclined plate oil separation tank, a first dissolved gas flotation treatment tank and a secondary dissolved gas flotation treatment tank in series connection, and that the biochemical treatment system comprises a first anaerobic hydrolysis acidification tank, a cyclic activated sludge tank, a secondary anaerobic hydrolysis acidification tank, an aerated biological filter and a Lamella sedimentation basin in series connection. The discharge pollutant indexes of the sewage treatment device meet the Integrated Wastewater Discharge Standard (GB8978-1996).

Description

technical field [0001] The invention relates to an inferior heavy oil refinery sewage treatment device Background technique [0002] 70% of the world's remaining oil resources are heavy oil, and heavy oil will surely become my country's main replacement resource in the future. The proportion of low-quality heavy oil processing in China's refining and chemical enterprises is increasing year by year, which has caused a series of environmental protection problems, mainly manifested in the insufficient adaptability of existing sewage facilities, difficulty in achieving stable and up-to-standard discharge, and the formation of major environmental safety hazards. The environmental protection of enterprises brings enormous pressure. If not handled properly, environmental protection issues are likely to become a "bottleneck" that restricts the sustainable development of low-quality heavy oil processing and refineries. [0003] Inferior heavy oil raw materials are bad in nature, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 黄鹤余昌信相养冬刘海澄方力杨春凤张文华杨同臣索永胜陈春茂阎光绪张华
Owner PETROCHINA CO LTD