Microorganism advanced treatment for oil refining waste water

A technology for advanced treatment of oil refining wastewater, applied in sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. problems, to achieve the effect of shortening the treatment residence time, eliminating pollution, and reducing operating costs

Active Publication Date: 2008-03-26
JIANGSU BODA ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is long, the investment cost is high, the operating cost is high, the operation is troublesome, and there are also deficiencies in physical and chemical treatment.
[0009] In addition, it is also reported that anaerobic fluidized bed process is used for advanced treatment of oil refinery wastewater, but only for NH 3 -N has good removal effect, but poor removal effect on organic pollutants
[0010] Therefore, it is difficult for the existing technologies to further treat the oil refinery wastewater after preliminary treatment until it reaches the reuse water standard stably.

Method used

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  • Microorganism advanced treatment for oil refining waste water

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] Embodiment one class (6), different treatment process comparisons:

[0027] Using the same refinery oily wastewater, after preliminary treatment to the average inflow of various indicators as shown in the table below, they are treated according to different processes, and the treatment results are shown in Table 1. Wherein embodiment 1-embodiment 5 adopts United Synthetic group 1 : Pseudomonas sp, Zoogloea sp., Plesiomonas sp., Bacillus, Bacillus megaterium, Rhodopseudomonas sp. (Rhodopseudomonas globiformis); Example 6 uses Combined flora 2 : Pseudomonas sp, Zoogloea sp., Plesiomonas sp., Bacillus, Bacillus megaterium, Rhodopseudomonas sp. (Rhodopseudomonas globiformis), Pseudomonas alcaligenes, Flavobacterium sp., microbial activity ≥10 11 per gram, the test treatment device is 20 tons / day, the average water temperature is 22°C, and the gas-water ratio is 1:3-5.

[0028] The internal circulation fluid biological aeration device (Fig. 1) consists of an aeration ...

Embodiment 1

[0034] Embodiment 1: adopt flora 1, mix and inoculate in common biological aeration filter carrier filler;

Embodiment 2

[0035] Example 2: Bacteria 1 was used and mixed inoculated in the contact oxidation reaction tank; it showed that the effect was basically the same as that of Example 1, indicating that the biological aeration filter had basically the same treatment effect as the biological reaction tank.

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Abstract

The present invention relates to deep treating process of refinery waste water after initial treatment. Refinery waste water is deeply treated biologically with microbial flora comprising Pseudomonas sp., Zoogloea sp., Plesiomonas sp., Bacillus, Bacillus megaterium and Rhodopseudomonas globiformis in a biological aeration filtering pond and / or a bioreaction pond while controlling the intake water pH value in 6-9. The deep treating process has simple path, high safety, low power consumption, low running cost and other advantages, and the water output can reach the reuse standard stably including CODcr not more than 60 mg / l, oil not more than 2 mg / l, NH3-N not more than 2 mg / l and SS not more than 10 mg / l.

Description

Technical field: [0001] The invention relates to a process for advanced treatment of oil refining waste water, in particular to the preliminary treatment of oil refining waste water and then processing it to the reuse water standard. Background technique: [0002] A large amount of oil refining wastewater is often produced in the production of the oil refining industry. For example, the refining of 1 ton of crude oil will produce about 3.4 tons of wastewater. The composition of this oil refining wastewater is complex, it is a mixed wastewater containing sulfur, oil, salt, alkali, phenol, cyanide, benzene, paraffin, sulfur, organic nitrogen and other pollutants; , antioxidants, pour point depressants and other macromolecular polymers; and most of the wastewater is refractory substances, which are highly toxic to microorganisms and have poor biodegradability. And the oil content in the wastewater is complex, including diesel, kerosene, aviation kerosene, heavy oil, and the oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/02C12N1/20
CPCY02W10/10
Inventor 王娅娜王海君
Owner JIANGSU BODA ENVIRONMENTAL PROTECTION
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