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Petroleum-polluted soil restoration method

A technology for oil pollution and remediation methods, applied in the field of contaminated soil treatment, can solve the problems of survival of microorganisms that are no longer suitable for initial addition, the function of microorganisms cannot be fully exerted, and the degradation effect is not complete, so as to promote bioavailability, promote The effect of degrading removal and increasing the contact area

Inactive Publication Date: 2017-12-12
常州蓝旗亚纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention: the current microbial treatment method adopts a single control condition, which is no longer suitable for the survival of the initially added microorganisms, and the functions of the microorganisms cannot be fully exerted, resulting in low degradation efficiency and incomplete degradation effect problem, providing a remediation method for oil-contaminated soil

Method used

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  • Petroleum-polluted soil restoration method

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preparation example Construction

[0017] A method for remediating oil-contaminated soil, the preparation method comprising the steps of:

[0018] (1) Breed 4-5 pigs per mu of oil-contaminated soil, feed the pigs every 2-3 hours, breed for 20-30 days, collect pig manure, and set aside;

[0019] (2) After driving away the pigs, add a surfactant to the oil-contaminated soil at an amount of 4kg per mu, let it stand for 8-10 hours, and plow it;

[0020] (3) In parts by weight, take 70-80 parts of water, 30-40 parts of peptone, 17-23 parts of yeast extract, 15-20 parts of glucose, and 4-7 parts of agar, mix them, and sterilize at high temperature to obtain a nutrient solution , according to the mass ratio of 100~120:1~2, put the nutrient solution and the spare pig manure in step (1) into the fermenter, ferment for 5~7d at a temperature of 25~30°C, filter, collect the fermented liquid, Get the bacteria solution, spray the bacteria solution to the oil-contaminated soil after plowing, the spraying amount is 15L per mu...

example 1

[0023] Feed preparation method: by weight fraction, get 50 parts of green vegetables, 20 parts of corn, 15 parts of barley, 4 parts of fish meal, 4 parts of green sugar, 3 parts of cotton cake, 0.5 part of stone powder, and 0.25 part of salt into a fermentation tank. Fermentation was carried out at a temperature of 30° C. for 2 days, and the fermented product was collected to obtain feed.

[0024] The surfactant is sodium dodecylbenzenesulfonate.

[0025] A method for remediating oil-contaminated soil, the preparation method comprising the steps of:

[0026] (1) Breed 4 pigs per mu of oil-contaminated soil, feed the pigs every 2 hours, breed for 20 days, collect pig manure, and set aside;

[0027] (2) After driving away the pigs, add a surfactant to the oil-contaminated soil at an amount of 4 kg per mu, let it stand for 8 hours, and plow it;

[0028] (3) In parts by weight, take 70 parts of water, 30 parts of peptone, 17 parts of yeast extract, 15 parts of glucose, and 4 par...

example 2

[0031] Feed preparation method: by weight fraction, get 55 parts of green vegetables, 30 parts of corn, 20 parts of barley, 5 parts of fish meal, 5 parts of green sugar, 4 parts of cotton cake, 1 part of stone powder, and 0.5 part of salt into a fermentation tank. Fermentation was carried out at a temperature of 40° C. for 3 days, and the fermented product was collected to obtain feed.

[0032] The surfactant is polyethylene glycol.

[0033] A method for remediating oil-contaminated soil, the preparation method comprising the steps of:

[0034] (1) Breed 4 pigs per mu of oil-contaminated soil, feed the pigs every 2.5 hours, breed for 25 days, collect pig manure, and set aside;

[0035] (2) After driving away the pigs, add a surfactant to the oil-contaminated soil at an amount of 4kg per mu, let it stand for 9 hours, and plow it;

[0036](3) In parts by weight, take 75 parts of water, 35 parts of peptone, 20 parts of yeast extract, 18 parts of glucose, and 6 parts of agar, mi...

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Abstract

The invention discloses a petroleum-polluted soil restoration method, belonging to the field of polluted soil treatment. According to the method, cultivated animals are focused and are assisted with feeds, nutrient substances are supplied to petroleum-polluted soil, a surfactant is fed into the petroleum-polluted soil for chemical cleaning so as to transfer pollutants from the surfaces of soil particles into a water phase, so that the contact area between the pollutants and microorganisms is enlarged, and the bio-availability of the pollutants is improved. A plant-planting soil system is capable of accelerating the removal the pollutants, each excreta or enzyme released by the plants is capable of promoting the biodegradation of organic pollutants and strengthening the mineralization effect of rhizosphere microorganisms. Besides, by effectively improving soil conditions of vegetation and improving the gas permeability of soil, the degradation efficiency of the organic pollutants can be improved. The method can be used solving the problems of low degradation efficiency and unthorough degradation effect as a single control condition is adopted in existing microorganism treatment methods and the functions of the microorganisms cannot be adequately exerted.

Description

technical field [0001] The invention belongs to the field of contaminated soil treatment, and in particular relates to a repair method for petroleum-contaminated soil. Background technique [0002] Crude oil is easy to cause spillage or leakage accidents during processing, use and transportation, causing oil to enter the soil and other environments and cause soil environmental pollution, which is difficult to be degraded in the soil environment. With the prosperity and development of our country's social economy, people's demand for oil is increasing. However, due to technical and management defects, a large amount of crude oil directly or indirectly flows into the soil and pollutes the soil, so that oil fills the gaps in the soil at a certain depth. , affecting the permeability of the soil, destroying the three-phase structure of soil water, gas and solid in crude oil, affecting the growth of microorganisms in the soil, and also affecting the respiration of plant roots in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/02B09C1/08B09C1/10
CPCB09C1/02B09C1/08B09C1/10B09C1/105
Inventor 刘蓉凤刘沁
Owner 常州蓝旗亚纺织品有限公司
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