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Oil sludge cleaning and recycling method based on kitchen waste oil

A recovery method and oil technology, applied in chemical instruments and methods, petroleum industry, sludge treatment, etc., can solve problems such as restricted application and high cost, and achieve simplified treatment process and cost, simple treatment process, and mild fermentation conditions Effect

Inactive Publication Date: 2019-07-09
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although biosurfactants have shown good application prospects in many fields, their high cost seriously restricts their further application.

Method used

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  • Oil sludge cleaning and recycling method based on kitchen waste oil
  • Oil sludge cleaning and recycling method based on kitchen waste oil
  • Oil sludge cleaning and recycling method based on kitchen waste oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A proper amount of kitchen waste oil was taken from the recycled dining car in the school cafeteria as raw material, and sterilized in an autoclave at 121°C for 15 minutes. Prepare 5L nutrient solution, the formula per liter is: 5.00g sodium chloride, 1.00g ammonium sulfate, 0.25g magnesium sulfate, 2.00g sodium nitrate, 1.00g potassium dihydrogen phosphate, 1.00g dipotassium hydrogen phosphate, 5.00g yeast extract, Kitchen waste oil 20.00g, pH=8.0. The activated Pseudomonas aeruginosa seed liquid is inoculated into the fermenter 1 according to the inoculation ratio of 5%, and the stirring motor 2, the air compressor 4, the heating coil at the bottom of the tank, etc. are controlled through the control cabinet 3, and the fermenter is set. The temperature inside is 37°C, the ventilation rate is 0.2vvm, and the stirring rate is 300r / min.

[0027] Taking the oil sludge in the drilling site of Weiyuan Oilfield in Neijiang City, Sichuan Province as the cleaning object, the ...

Embodiment 2

[0034] Carry out according to embodiment one, but oil sludge is the oil sludge of certain oilfield in Xinjiang, all the other are the same as embodiment one, and its crude oil recovery rate is 84%.

Embodiment 3

[0036] Carry out according to embodiment one, but the kitchen waste oil is family kitchen waste oil, all the other are the same as embodiment one, and its crude oil recovery rate is 78%.

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Abstract

The invention provides an oil sludge cleaning and recycling method based on kitchen waste oil. The method is characterized by comprising the following steps: by taking the kitchen waste oil as a raw material, carrying out high-temperature sterilization and then taking the sterilized kitchen waste oil as a carbon source, preparing a nutrient solution, and inoculating a proper amount of strains intothe nutrient solution of a fermentation tank to conduct fermentation for 3-5 days; and by taking the fermentation liquor as washing liquor and controlling the parameters (liquid-solid ratio, temperature, rotating speed, pH and time) of cleaning operation, cleaning oil-containing components in the oil sludge into the washing liquor, and finally separating and recycling oil in the washing liquor through high-speed centrifugal demulsification. On one hand, the harm of kitchen waste oil and oily sludge to the environment can be reduced, and on the other hand, the recycling of oil can be realized.The process is simple, the operation condition is mild, waste is treated with waste in the whole process, waste is turned into wealth, cost is saved, and environment friendliness is achieved.

Description

technical field [0001] The invention belongs to the field of oil sludge cleaning, and in particular relates to a method for recycling kitchen waste oil for oil sludge cleaning and recovery. Background technique [0002] Food waste refers to food residues and domestic waste formed by residents in the process of living consumption. With the growth of the national economy and the continuous development of the catering industry, the output of food waste in our country continues to increase. According to statistics, in 2011, the national urban domestic waste was as high as 164 million tons, of which the content of kitchen waste exceeded 30%. Food waste is different from other domestic waste. It is rich in oil, starch, protein and other nutrients. It not only easily produces stench and causes environmental pollution, but also its waste oil is recycled by some unscrupulous businesses for profit. A series of events endangering human health occurred. [0003] The traditional resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C10G1/00
CPCC02F11/00C10G1/00
Inventor 陈春燕李东胜肖国清
Owner SOUTHWEST PETROLEUM UNIV
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