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Harmless oil mud treatment process

A treatment process and technology for sludge, applied in sludge treatment, sludge treatment, biological sludge treatment, etc., can solve the problems of sludge pollution, high operating costs, troublesome operation and management, and achieve low cost and low power consumption. Effect

Inactive Publication Date: 2016-01-20
QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the above methods have a large one-time investment, troublesome operation and management, and high operating costs. The most important thing is that the treatment is not thorough, which is easy to cause secondary pollution, and cannot fundamentally solve the problem of sludge pollution.
Although the composting method and plant method have low investment and convenient operation and management, the treatment efficiency is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Select the gutter sludge near the hotel to screen through the following methods:

[0015] 1.1 Strain enrichment

[0016] Add a certain amount of sludge (3%) to the glucose medium in the Erlenmeyer flask, put it into a shaker, and cultivate at 30°C for 3 days to obtain a bacterial enriched liquid. The glucose medium formula is: sodium chloride 1.2g, calcium chloride 0.7g, dipotassium hydrogen phosphate 0.3g, potassium dihydrogen phosphate 0.3g, ferric chloride 0.05g, ammonium nitrate 1.2g, magnesium sulfate heptahydrate, 1.1g Yeast extract, 1.8g glucose, 1.2L water, PH7.0-7.5; sterilize at 110°C for 20min.

[0017] 1.2 Strain screening

[0018] Dilute the bacterial enrichment solution and then streak it on a glucose solid medium plate (add 2% agar to the glucose medium), culture at 25°C for 24 hours, pick a single colony that grows well on the plate and streak it for inoculation Incubate on an alkane plate at 25°C for 36 hours, pick the two largest single colonies and name the...

Embodiment 2

[0020] Biological and biochemical tests were performed on the Y strain. The yeast YPD agar was cultured on a plate (25°C) for 3 days. The colonies could grow to 1-2 mm, white to cream. The initial colony was smooth, and the colony appeared wrinkled after prolonged cultivation. When grown on a solid or liquid medium, the cell shape is round or oval, and sometimes the cells are elongated and grow like pseudofilaments, and the cell size is about 4-6×6-8 microns.

[0021] Biological and biochemical tests were conducted on the P strain. The bacteria were cultured on a nutrient agar plate for 24 hours. The bacteria grew vigorously, the colonies were smooth, moist, translucent and light yellow colonies, which produced strong odors, and the Gram stain was negative. It has multiple flagella, and most strains have more than three flagella. The bacterium is obligate to aerobic, metabolizes in respiratory type, decomposes glucose and xylose, uses citrate, and phenylalanine dehydrogenase rea...

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Abstract

The present invention belongs to the field of environmental protection, and discloses a harmless oil mud treatment process, which comprises four steps such as oil mud fluidization, biological treatment, sludge dewatering and biological induction, and comprises that Candida lipolytica Y-57 and Pseudomonas putida P-101 are poured into a biological reaction tank, an aeration biological reaction is performed to achieve the oil content in the oil mud (calculated as the absolute dry mud) of less than 3% and the oil content in the water of less than 130 mg / L, the floating oil on the upper portion of the water surface is recycled through an oil collection device, the fine mud sand on the bottom portion achieves the standard emission, and the oil mud enters the sludge dewatering step. According to the present invention, the microbial treatment method, the biological induction method and the mechanical method are combined, such that the oil content in the sludge can achieve the 0.5% standard, the sludge environment can be recovered, and the resource and harmlessness purpose can be achieved.

Description

technical field [0001] The invention belongs to the field of environmental protection and relates to a process for treating harmless oil sludge. Background technique [0002] Oily sludge is oily solid waste produced during oil extraction, transportation, refining and oily sewage treatment. It contains a large amount of hydrocarbons, benzene series, phenols, anthracene and other substances. If it is not treated, it will not only pollute the environment, but also be a waste of resources. [0003] Each station in Huabei Oilfield has the problem of difficult disposal of oil sludge. Now it is necessary to treat the settled oil sludge in the settling tanks of each plant station so that it can be discharged safely and harmlessly. [0004] At present, there are many ways to deal with oil sludge, such as: landfill method, mechanical method, incineration method, composting method, land cultivation method, bioreactor method and plant method. Generally speaking, the above methods requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/02
CPCY02W10/20
Inventor 张栋
Owner QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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