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Microbial processing method and processor of oil-containing waste water

A technology for microbial treatment and wastewater, applied in biological treatment devices, biological water/sewage treatment, special compound water treatment, etc. It can solve the problem of fast mixing rate of microorganisms and sewage, high transfer rate of microorganisms and air, and slow mixing rate of oil removal process. and other problems, to achieve the effect of increasing the oxygen supply of microalgae, high oil removal efficiency, and efficient petroleum hydrocarbon degradation rate

Inactive Publication Date: 2019-02-12
ZHEJIANG OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention overcomes the shortcomings of slow mixing rate and poor oil removal efficiency in the existing oily wastewater degreasing process, and provides a microbial treatment method and processor for oily wastewater, which can degrade industrial oily wastewater, and microorganisms and air are transferred in the sewage High rate, fast mixing rate of microorganisms and sewage, high oil removal efficiency

Method used

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  • Microbial processing method and processor of oil-containing waste water
  • Microbial processing method and processor of oil-containing waste water

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Experimental program
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Effect test

Embodiment 1

[0039] Among the embodiment 1: A, prepare 10 microalgae reactors of air lifting type, the microalgae reactor volume is 3L, comprises bottle body 1, air plug 2, top cover 3, gas drainage tube 4, diffuser 5 and inlet Sample port 6. The bottle body 1 is protected from light to realize a light-free environment for the growth of microalgae, which is used for the heterotrophic deep degradation of the petroleum hydrocarbons in the waste water by the microalgae.

[0040] B. The water sample collected from the scene of the oil spill accident was subjected to microbial identification and separation, and microalgae were screened out, and the microalgae was Chlorella. The microalgae were enriched and cultured for 15 days, the medium was boiled with seawater for 12-18 minutes, and the corresponding nutrient salts were added after suction filtration. The concentrations of the components in the three nutrient salts were NH4Cl 0.2g / L, K2HPO4 0.05g / L and ferric citrate 0.01g / L to obtain algae...

Embodiment 2

[0043] A. Prepare 6 air-lift microalgae reactors. The volume of the microalgae reactor is 3L, including bottle body 1, air plug 2, top cover 3, gas drainage tube 4, diffuser 5 and sample inlet 6. The bottle body 1 is protected from light to realize a light-free environment for the growth of microalgae, which is used for the heterotrophic deep degradation of the petroleum hydrocarbons in the waste water by the microalgae.

[0044] B. The water samples collected from the scene of the oil spill accident were subjected to microbial identification and separation, and microalgae were screened out, and the microalgae were enriched and cultivated for 18 days, and the culture medium was boiled with seawater for 12-18 minutes, and the corresponding microalgae was added after suction filtration. The concentration of each component in the three kinds of nutrient salts is NH4Cl 0.2g / L, K2HPO4 0.05g / L and ferric citrate 0.01g / L to obtain the algae liquid.

[0045] C. Inject the algae liquid...

Embodiment 3

[0046] In embodiment 3: A, prepare 10 microalgae reactors of air lifting type, microalgae reactor volume is 3L, comprises bottle body 1, air plug 2, top cover 3, gas drainage tube 4, diffuser 5 and inlet The sample port 6; the bottle body 1 has been treated to avoid light to realize a light-free environment for the growth of microalgae, for the microalgae to perform heterotrophic deep degradation of petroleum hydrocarbons in wastewater.

[0047] B. The water samples collected from the scene of the oil spill accident were subjected to microbial identification and separation, and microalgae were screened out, and the microalgae were enriched and cultivated for 18 days, and the culture medium was boiled with seawater for 12-18 minutes, and the corresponding microalgae was added after suction filtration. The concentration of each component in the three kinds of nutrient salts is NH4Cl 0.2g / L, K2HPO4 0.05g / L and ferric citrate 0.01g / L to obtain the algae liquid.

[0048] C. Inject ...

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Abstract

The invention discloses a microbial processing method and a processor of oil-containing waste water. The microbial processing method comprises the following steps that A, a plurality of air lifting type microalgae reactors, including bottle bodies, air plugs, top covers, air guiding pipes, diffusers and sample inlets, are prepared, and the bottle bodies are subjected to light-shielding treatment;B, a water sample collected from an oil spill accident site is subjected to microbial assay and separation, microalgae is screened out from the water sample, and subjected to enrichment culture for 12-20 days, and alga liquid is obtained; C, the alga liquid obtained in step B is injected into the air lifting type microalgae reactors from the top; the microalgae reactors are divided equally into aplurality of groups; each microalgae reactor is respectively connected with a water inlet pipe and an aeration pipe, thus waste water sample injection is realized; the waste water is stirred and diffused to be uniformly mixed with the microalgae liquid in the reactors; and after aeration, contact between the microalgae and the oil-containing waste water is increased, and microalgae oxygen supply is enhanced. The microbial processing method and the processor have the advantages that the industrial oil-containing waste water can be degraded; the microorganism and air have high transmission ratein the waste water; the microorganism can mix with waste water at a high rate, and thus the oil removing efficiency is high.

Description

technical field [0001] The invention relates to the technical field of biological treatment of oily wastewater, in particular to a microbial treatment method and processor for oily wastewater. Background technique [0002] With the development of industry, the use of oil products is increasing. However, due to the lag in the development of various technologies and imperfect management, a large amount of oil products enter the water body and form pollution. There are many sources of oily wastewater, and a large amount of oily wastewater will be produced in the oil extraction, refining, oil storage, transportation process of the petroleum industry and the production process of the petrochemical industry. The pollution of oily wastewater is mainly manifested in the following aspects: (1) affecting drinking water resources and groundwater resources, endangering aquatic resources; (2) endangering human health; (3) polluting the atmosphere; (4) affecting crop production; (5) Dest...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/32C02F101/32
CPCC02F1/40C02F3/322C02F3/34C02F2101/32C02F2203/006C02F2305/06
Inventor 陈庆国李晶晶鲍博刘梅穆军
Owner ZHEJIANG OCEAN UNIV