A treatment method, treatment system and construction method of a treatment system for oily sewage

A treatment method and treatment system technology, applied in the field of environmental protection water treatment, can solve problems such as oily sewage that has not been seen in chemical flooding, and achieve the effects of reducing viscosity and emulsified oil content, simple and mild cultivation conditions, and efficient and convenient treatment process.

Active Publication Date: 2022-04-12
大连知微生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it has been reported that the combined activated sludge anoxic and phosphorus-accumulating biofilm nitrification is used for phosphorus and nitrogen removal, but it has not been used for chemical flooding oily sewage treatment.

Method used

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  • A treatment method, treatment system and construction method of a treatment system for oily sewage
  • A treatment method, treatment system and construction method of a treatment system for oily sewage
  • A treatment method, treatment system and construction method of a treatment system for oily sewage

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Experimental program
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Effect test

Embodiment 1

[0106] The construction method of the oily sewage treatment system of the present embodiment is as follows:

[0107] (1) Take 20L of activated sludge from a sewage treatment plant of a petrochemical company in Dalian, with a sedimentation ratio of 26%. The activated sludge is added to the biochemical tank, fed into the chemical flooding oily sewage, and pre-aerated for 12 days; it will account for 15% of the volume of the biochemical tank The supernatant was discharged, supplemented with chemical flooding oily sewage, and exposed for 48 hours. This process was repeated 8 times. The mass ratio of C, N, and P in the biochemical pool was kept at 100:5:0.8, and the water inflow rate was controlled at 2.5m 3 / h, continuous operation for 25 days to complete the acclimatization of activated sludge.

[0108] (2) The domesticated activated sludge is pumped into the upper water distributor and drenched, so that the activated sludge is repeatedly circulated in the simulated container of ...

Embodiment 2

[0114] The difference between the oily sewage treatment system of this embodiment and that of Embodiment 1 is that the inoculum ratio of Bacillus amyloliquefaciens and Bacillus Velesi is 10:1. After the oily sewage treatment system was stabilized, the total number of live bacteria of Bacillus amyloliquefaciens and Bacillus velesi on the biofilm was 1×10 11 piece / m 2 , the ratio of the number of live bacteria of Bacillus amyloliquefaciens and Bacillus Veles is 10:1.

Embodiment 3

[0116] The difference between the oily sewage treatment system of this embodiment and that of Embodiment 1 is that the ratio of the inoculum amounts of Bacillus amyloliquefaciens and Bacillus velesii is 0.5:1. After the oily sewage treatment system was stabilized, the total number of live bacteria of Bacillus amyloliquefaciens and Bacillus velesi on the biofilm was 1×10 12 piece / m 2 , the ratio of the number of live bacteria of Bacillus amyloliquefaciens and Bacillus Veles is 0.6:1.

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Abstract

The present application discloses a method for treating oily sewage, which is characterized in that it comprises the following steps: using activated sludge to treat oily sewage; using biofilm to treat the treated oily sewage. The present application also discloses an oily sewage treatment system, which is characterized in that it includes: a biochemical pool, filled with activated sludge, which is used for activated sludge treatment of oily sewage; and a biological filter, which contains a biofilm, It is used for biofilm treatment of oily sewage; the biochemical pool communicates with the biofilter. The present application also discloses a construction method of an oily sewage treatment system, which is characterized in that it includes the following steps: domestication of activated sludge; preparation of biofilm. The treatment method of this application not only ensures efficient and advanced treatment of oily sewage, but also greatly reduces the output of sludge, and the water quality is stable, which is a green and environmental protection treatment method.

Description

technical field [0001] This application belongs to the technical field of environmental protection water treatment. In particular, it relates to a method for treating oily sewage, a treatment system and a construction method of the treatment system. Background technique [0002] In the field of oil and gas development, chemical flooding refers to the method of improving the recovery factor by adding polymers, surfactants and other agents to the injection fluid to change the properties of the displacement fluid and its mobility ratio with the reservoir fluid. . The wide application of chemical flooding tertiary oil recovery technology has led to the characteristics of complex composition, high viscosity and serious emulsification of oily sewage, which greatly increases the difficulty of treatment. At the same time, as the comprehensive water content of oilfields continues to increase in the middle and late stages of oil exploitation, the balance between the amount of produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 赵静王静阿克巴尔·卡得拜孙秀鹏韩俊杰刘雨肖向晖
Owner 大连知微生物科技有限公司
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