Soil remediation composition and application and soil bio-remediation method

A technology of soil remediation and composition, which is applied in the field of soil remediation composition and soil bioremediation, which can solve the problems of poor soil remediation effect and achieve good soil remediation effect, low cost and simple operation

Inactive Publication Date: 2019-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the defective that prior art uses the method for bioremediation to the soil remediation effect of petroleum hydrocarbon contamination poor, provides a kind of soil remediation composition and soil bioremediation method, can obtain comparatively according to the method of the present invention Good soil remediation effect, and the composition and method of the present invention are particularly suitable for the remediation of petroleum hydrocarbon-contaminated soil, especially for the remediation of refractory petroleum hydrocarbon-contaminated soil and the remediation of deep petroleum hydrocarbon-contaminated soil

Method used

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  • Soil remediation composition and application and soil bio-remediation method
  • Soil remediation composition and application and soil bio-remediation method
  • Soil remediation composition and application and soil bio-remediation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Weigh 6g polyacrylic acid and dissolve it in 200g deionized water to obtain aqueous solution 1; weigh 0.96g urea and dissolve it in 100g deionized water to obtain aqueous solution 2; take Stenotrophomonas and Candida (1:1) and mix in 300g deionized water to obtain aqueous solution 3; weigh 45g sawdust, 30g polyaspartic acid and mix in 2400g soil, add aqueous solutions 1, 2, and 3 to the soil, and mix evenly, wherein Stenotrophomonas and Candida The amount of yeast used makes the total number of microorganisms in the soil shown in Table 2. Then add 17.7g phenol in the soil that mixes homogeneously, mix homogeneously. Add water every two days, keep the soil water content at 15-25% by weight, and turn the soil 3 times a week. The soil petroleum hydrocarbon content and the total number of soil bacteria were tested weekly, and the results are shown in Table 1 and Table 2, respectively.

Embodiment 2

[0114] 称取3.6g聚丙烯酰胺溶于200g去离子水中,得到水溶液1,称取12.86g 玉米浆溶于100g去离子水中,得到水溶液2,取迪茨氏菌和假丝酵母菌(1:2) 混于300g去离子水中,得到水溶液3,称取45g秸秆,30g聚天门冬氨酸混 于2400g土壤中,将水溶液1、2、3加入土壤中,混合均匀,其中,迪茨氏 菌和假丝酵母菌的用量使得土壤中微生物总数见表2。向混合均匀的土壤中 加入17.7g苯酚,混合均匀。每两天补一次水,保持土壤含水量在15-25重量%,每周翻土3次。每周检测土壤石油烃含量以及土壤菌体总数,结果分 别见表1和表2。

Embodiment 3

[0116] 称取8.4g淀粉-丙烯酸聚合物溶于200g去离子水中,得到水溶液1,称 取0.96g尿素溶于100g去离子水中,得到水溶液2,取藤黄微球菌和假丝酵 母菌(2:1)混于300g去离子水中,得到水溶液3,称取45g沸石粉,30g 聚天门冬氨酸混于2400g土壤中,将水溶液1、2、3加入土壤中,混合均匀, 其中,藤黄微球菌和假丝酵母菌的用量使得土壤中微生物总数见表2。向混 合均匀的土壤中加入17.7g苯酚,混合均匀。每两天补一次水,保持土壤含 水量在15-25重量%,每周翻土3次。每周检测土壤石油烃含量以及土壤菌 体总数,结果分别见表1和表2。

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Abstract

The invention relates to the field of environmental protection, in particular to a soil remediation composition and an application and a soil bio-remediation method. The soil remediation composition comprises a water retaining agent, a soil conditioner, nutrients, polyaspartic acid and a mixed microbial agent, wherein the mixed microbial agent is a mixed microbial agent of bacteria and fungi. Theapplication is an application of the soil remediation composition in soil remediation. The method includes repairing soil using the soil repairing composition as described above. By introducing the microbial agents (bacteria and fungi) capable of degrading petroleum hydrocarbons into the soil, and simultaneously introducing components (such as the soil conditioner, the nutrients, the polyasparticacid, the water retaining agent and the like) which have an improvement effect on the soil quality, the microbial agents are promoted to propagate in the soil, and pollutants in the soil are promotedto be degraded, and thus a better soil remediation effect is obtained. The soil remediation composition does not cause secondary soil pollution or damage the soil environment, and has low cost and simple operation.

Description

technical field [0001] The present invention relates to the field of environmental protection, in particular to soil remediation compositions and applications and soil bioremediation methods. Background technique [0002] During the process of oil exploration, mining, transportation, refining, etc., due to improper operation or accidental leakage, part of the oil spills into the soil, causing petroleum hydrocarbon pollution in the soil. The world's annual petroleum pollutants discharged into the environment through crude oil landing and accidental leakage are about 8×10 6 t, petroleum hydrocarbon pollution has become the focus of world attention. In the 1980s, serious petroleum hydrocarbon soil pollution problems appeared in the United States. About half of its 450,000 brownfields were polluted by petroleum hydrocarbons. During the same period, the oil hydrocarbon-contaminated sites in Canada were as high as 60%, and many areas and factories in the United Kingdom also had s...

Claims

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Application Information

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IPC IPC(8): B09C1/10
Inventor 郦和生王亭王岽胡艳华
Owner CHINA PETROLEUM & CHEM CORP
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