Material balance calculation method based on oil-contaminated soil cleaning treatment process and application of material balance calculation method

A soil and material technology, applied in special data processing applications, electrical digital data processing, instruments, etc., can solve the problems of inability to obtain precise control of the cleaning process, unstable effects, and failure to achieve precise control of the pollutant migration characteristics of the cleaning system.

Pending Publication Date: 2021-08-31
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

However, for oil-contaminated soils, in view of the strong non-polar characteristics of oil pollutants, conventional ex-situ soil cleaning technology for disposal is not stable.
At this stage, the cleaning effect that ex-situ cleaning practitioners are concerned about mainly comes from the residual pollution in the soil after the final cleaning, but it is not actively grasped during the impleme

Method used

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  • Material balance calculation method based on oil-contaminated soil cleaning treatment process and application of material balance calculation method
  • Material balance calculation method based on oil-contaminated soil cleaning treatment process and application of material balance calculation method
  • Material balance calculation method based on oil-contaminated soil cleaning treatment process and application of material balance calculation method

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Experimental program
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Effect test

Embodiment 1

[0065] Example 1 Establishment of Material Balance Accounting Relationship of Ex-situ Cleaning and Disposal of Oil Contaminated Soil

[0066] The high-concentration petroleum-contaminated soil landed in the oilfield area where the Liaohe Oilfield is located is used as the disposal object, and the high-concentration petroleum-contaminated soil is cleaned and disposed of with fatty alcohol polyoxyethylene ether (AEO) and other cleaning agents. During the cleaning process, quantitative analysis was carried out on the total amount of dirty oil and its group composition in each material (including soil with different particle sizes, eluent water and desorbed dirty oil) at each disposal node, so as to establish the cleaning process Material balance relationship of dirty oil. The oil content of the treated oily soil was 4.25% (w / w, g / g), of which saturated hydrocarbons accounted for 63.2%, aromatic hydrocarbons accounted for 16.7%, colloids accounted for 13.2%, and asphaltenes accoun...

Embodiment 2

[0105] Example 2 Optimizing Process Parameters for Ex-situ Cleaning and Disposal of Oil Contaminated Soil Using Waste Oil Material Balance

[0106] The oil-contaminated soil around the oil well of the Gudao Oil Production Plant of Shengli Oilfield was used as the disposal object for ex-situ cleaning. Since the optimal ex-situ cleaning parameters have not yet been obtained, a three-level and four-time cleaning process was set according to the cleaning and disposal engineering experience, specifically including Under the conditions of 70°C, pH 11.5, solid-to-liquid ratio 5:1, cleaning cycle 30min (Test 1) and 80°C, pH 13, solid-liquid ratio 3:1, cleaning cycle 40min (Test 2) Cleaning; the cleaning process includes first cleaning with hot alkaline water under the above conditions, washing and sieving the soil particles during the cleaning process, and sieving out the soil particle components with a particle size of >3mm, 0.02-3mm and <0.02mm respectively; Then, the soils with dif...

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Abstract

The invention belongs to the technical field of ex-situ cleaning treatment of petroleum-contaminated soil, and particularly relates to a material balance method based on a cleaning treatment process of oil-contaminated soil and application of the material balance method. The method comprises the following steps: detecting the occurrence content of the total amount of sump oil and the content of group parts in various materials in a petroleum-contaminated soil cleaning system to obtain the distribution state of the content of the sump oil and the content of the group parts of the sump oil under different cleaning cycle conditions aiming at soil with different particle size grades; a material balance calculation method and a material balance relation of the sump oil content in the multi-stage multi-time cleaning process are established; the method comprises the following steps: establishing elution efficiency evaluation parameters by using sump oil material balance data, analyzing the total amount elution effect of sump oil, residual characteristics of biochemical parts such as saturated hydrocarbon, aromatic hydrocarbon and colloid, and the residual amount of sump oil in fine-particle soil, so as to compare, evaluate, regulate and control the design and cleaning effect of a petroleum-contaminated soil cleaning process. And parameter optimization of the optimal cleaning technology and efficient treatment of the oily soil are assisted.

Description

technical field [0001] The invention belongs to the technical field of cleaning and disposal of oil-contaminated soil, and in particular relates to a material balance calculation method based on the cleaning and disposal process of oil-contaminated soil and its application. Background technique [0002] The rapid development of the petrochemical industry has greatly promoted the rapid progress of my country's social economy and brought considerable economic benefits. However, the extensive exploitation of petroleum resources and the deep processing and production of petrochemical products have also brought about the problem of environmental pollution. The situation of soil pollution has continued to emerge, resulting in the decline of soil environmental quality and the limitation of land use functions, which urgently need to be repaired and treated. , in order to realize the development and reuse of land resources. [0003] Since the development of the field of soil remedia...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/02
CPCG06F30/20G06F2119/02
Inventor 郭书海王卅吴波程凤莲李刚
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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