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Microorganism advanced treatment for oil refining waste water

A technology for advanced treatment and refinery wastewater, which is applied in sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of poor removal of organic pollutants, high operating costs, and large investment costs. problems, to achieve the effect of shortening the treatment residence time, eliminating pollution, and reducing operating costs

Active Publication Date: 2010-12-29
JIANGSU BODA ENVIRONMENTAL PROTECTION
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  • Application Information

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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.
[0010] 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
[0011] 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
  • Microorganism advanced treatment for oil refining waste water
  • Microorganism advanced treatment for oil refining waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one class (6), different treatment process comparisons:

[0028] 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 couplet Synthetic flora 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.

[0029] Internal circulation fluid biological aeration device ( figure 1 ), the aeration tank (t...

Embodiment 1

[0035] Embodiment 1: adopt flora 1, mix and inoculate in common biological aeration filter carrier filler;

Embodiment 2

[0036] 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 waterpH 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 an advanced treatment process of oil refinery wastewater, in particular to treatment of oil refinery wastewater to reuse water standards after preliminary treatment. Background technique: [0002] A large amount of refining wastewater is often generated in the production of the oil refining industry. For example, refining 1 ton of crude oil will generate about 3.4 tons of wastewater. The composition of this oil refining wastewater is complex, and it is a mixed wastewater containing various pollutants such as sulfur, oil, salt, alkali, phenol, cyanide, benzene, paraffin, sulfur, organic nitrogen; sometimes in the refining process, such as antiknock agent , antioxidants, pour point depressants and other high molecular polymers; and most of the wastewater is refractory substances, which are highly toxic to microorganisms and have poor biodegradability. And the oil content in wastewater is complex, including diesel, kerosene, avi...

Claims

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Application Information

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Patent Type & Authority Patents(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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