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Multicomponent compound drip washing liquid, repair method and its apparatus

A kind of eluent and multi-component technology, which is applied in the direction of inorganic/elemental cleaning composition, restoration of polluted soil, non-ionic surface active compounds, etc. It can solve the problems of high content of petroleum pollutants and the inability to achieve soil harmlessness, etc. , to achieve the effect of short cycle, easy operation and environmental friendliness

Inactive Publication Date: 2007-03-28
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, leaching technology is currently mainly used for oil sludge treatment for the purpose of recovering crude oil (patent application number: 98113781.4; 200410062490.4; 200510045971.9), and the oil content of the treated soil is not the focus of attention. When the soil is polluted, the biggest problem is that the content of petroleum pollutants in the remaining soil is too high to realize the harmlessness of the soil

Method used

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  • Multicomponent compound drip washing liquid, repair method and its apparatus

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Embodiment 1

[0021] Prepare heavy oil-contaminated soil with an oil concentration of 20,000mg / Kg, put it in an oven and dry it at 50°C for three days to simulate the aged heavy-oil-contaminated soil (some studies have shown that putting oil-contaminated soil in an oven at 50°C, After more than three days, most of the compounds with carbon atoms below 16 in petroleum components volatilized Urum K, Pekdemir T, Copur M.Surfactants treatment of crude oil contaminated soils.Journal of Colloid and Interface Science, 2004, 276( 2): 456~464). After aging, the measured value of the actual oil concentration in the heavy oil-polluted soil is 12176.72 mg / Kg. The specific steps of the gradient leaching method are as follows: First, weigh 100 g of the aged heavy oil-contaminated soil and add it to the leaching reactor (1), and then use a 10:1 (eluent: polluted soil, ml / g) liquid-solid than adding 1000ml of multi-component compound eluent configured by sodium dodecylbenzenesulfonate, Triton X-100, sodiu...

Embodiment 2

[0025]Prepare heavy oil-contaminated soil with an oil concentration of 200,000 mg / Kg, put it in an oven and bake it at 50°C for three days. After aging, the measured value of the actual oil concentration of the heavy oil-contaminated soil is 189,227.32 mg / Kg. The specific steps of the gradient leaching method are as follows: first, weigh 100 g of the aged heavy oil-contaminated soil and add it to the leaching reactor (1), and then press the liquid-solid concentration of 10:1 (eluent: polluted soil, ml / g) Add 1000ml of multi-component compound eluent prepared by sodium dodecylbenzenesulfonate, Triton X-100, sodium carbonate, sodium tripolyphosphate, sodium silicate, anhydrous sodium sulfate and water. The distribution ratio of each component in the lotion is shown in Table 1; then, the washing temperature is set at 60°C through the temperature control meter (10) in the automatic control cabinet (3), and the frequency conversion governor (6) and timer ( 7) Stir for 30 minutes un...

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Abstract

The invention discloses aging thick oil contaminated soil grads multiple multielement compositional eluate, repairing method and the device. The detailed eluate composition, repairing method, and device can be seen in specification. It has the advantages of high residual soil cleanliness, high crude resources developing degree, simple device operation, and short repairing cycle. The produced eluate can be used to repair aging thick oil contaminated soil in oil field procedure.

Description

technical field [0001] The invention relates to an environmental protection treatment method, in particular to a gradient multi-component compound eluent for aging heavy oil polluted soil, a repair method and a device thereof. Background technique [0002] During oil drilling, mining and transportation, a large amount of petroleum pollutants will be released into the surrounding soil environment due to running, leaking, dripping, leaking or other reasons. These pollutants will change their physical and chemical properties after entering the soil, making crops and ground surface Vegetation is difficult to grow, especially the highly toxic aromatic hydrocarbons in petroleum can accumulate in large quantities in crops and pose a huge threat to human health through the food chain. [0003] As a kind of crude oil, heavy oil refers to the crude oil with degassed oil viscosity exceeding 100 mPa·s at the original reservoir temperature. It is a complex multi-component mixture with hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/83C11D3/06B09C1/02
Inventor 藉国东周国辉
Owner PEKING UNIV
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