Method for designing SVE process parameters in petroleum contaminated site

A technology of process parameters and design methods, applied in design optimization/simulation, special data processing applications, etc.

Pending Publication Date: 2020-06-09
TECH CENT FOR SOIL AGRI & RURAL ECOLOGY & ENVIRONMENT MINIST OF ECOLOGY & ENVIRONMENT +1
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Problems solved by technology

[0005] The invention provides a design method of SVE process parameters in petroleum-contaminated sites, which is used to solve the influence of different influencing factors on the SVE repair rate in petr...

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  • Method for designing SVE process parameters in petroleum contaminated site
  • Method for designing SVE process parameters in petroleum contaminated site
  • Method for designing SVE process parameters in petroleum contaminated site

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[0078] BTEX pollution is a representative category of petroleum organic pollutants. BTEX is benzene (benzene), toluene (toluene), ethylbenzene (ethylbenzene), three isomers of dimethylbenzene (o-xylene o-xylene, m-xylene m-xylene, p-xylene) commonly found in petroleum. xylene) collectively referred to as single-ring aromatic hydrocarbons. BTEX mainly exists in crude oil and petroleum products. As a chemical raw material, it is widely used in manufacturing industries such as pesticides, plastics and synthetic fibers. BTEX is easily released into the environment during production, storage and transportation, causing environmental pollution and posing hazards to ecosystems and human health. In BTEX pollution treatment, because BTEX is volatile, it can be removed by SVE in highly permeable soil.

[0079] Taking BTEX as an example, such as figure 1 As shown, the flow diagram of the SVE process parameter design method for the BTEX polluted site, the specific steps are as follows:...

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Abstract

The invention discloses a method for designing SVE technological parameters in a petroleum contaminated site. The method comprises the following steps that 1, defining the site and petroleum contamination conditions; 2, combining the site parameters, the pollution parameters and the SVE process parameters, establishing a repair model of TOUGH software about SVE, and obtaining a repair rate y; 3, screening p main control factors by using a grey correlation degree method; and step 5, performing fitting verification according to the simulation result of the multiple linear regression equation, and determining whether the simulation precision meets the design requirement or not; and 6, screening an optimal SVE process parameter combination and applying the optimal SVE process parameter combination. According to the method, through the design of typical sites and multi-factor variables and in combination with TOUGH simulation, the migration rules of pollutants in different scenes in the sites can be clarified, and parameter design and selection of the SVE process are facilitated; based on a grey correlation degree method, a main control factor is found out, and key design for coping with pollution treatment is facilitated; and by establishing a multiple linear regression equation, the method is more applicable to similar sites.

Description

technical field [0001] The invention belongs to the technical field of petroleum-contaminated sites, and in particular relates to a design method for SVE process parameters in petroleum-contaminated sites. Background technique [0002] As industrialization progressed, the use of petroleum also increased. In long-term use, oil leaks occur from time to time, and oil pollution has increasingly become an important part of environmental pollution. Due to the volatility and fluidity of petroleum organic pollutants, they will migrate in the soil layer with high permeability, and some even penetrate into the groundwater, causing a wider range of pollution under the interaction of water and soil, and aggravating the degree of pollution . [0003] To control petroleum pollutants, it is necessary to clarify the migration and transformation process of petroleum pollutants in the soil. TOUGH is the English abbreviation of Transport of Unsaturated Groundwater and Heat, which is a tool ...

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Application Information

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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 李娟杨洋席北斗王颖史俊祥汪洋鹿豪杰唐军吕宁磬
Owner TECH CENT FOR SOIL AGRI & RURAL ECOLOGY & ENVIRONMENT MINIST OF ECOLOGY & ENVIRONMENT
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