Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes

A high-efficiency microbial and oil-polluted technology, applied in the field of environmental remediation, can solve problems such as plant growth inhibition, the use of bacterial agents, and the impact of phytoremediation effects, and achieve the effects of promoting the degradation of petroleum hydrocarbons, improving the structure of the soil, and good removal effect

Active Publication Date: 2010-11-24
博川环境修复(北京)有限公司
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Problems solved by technology

However, due to the special properties of saline-alkali soil, the use of bacterial agents and phytoremediation effects in the bioremediation process will be affected, especially the growth of plants in a saline-alkali environment is inhibited

Method used

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  • Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes
  • Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes
  • Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes

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Embodiment 1

[0017] Embodiment 1: the pot experiment that is carried out in Nankai University biological testing center

[0018] The polluted soil collected from Shengli Oilfield was air-dried, ground, and passed through a 2mm sieve. Sampling and determination of physical and chemical indicators such as total salt and total petroleum hydrocarbon content of the soil. The measured total petroleum hydrocarbon content of the soil is 6.19%, pH7.9, organic matter 0.58%; total N 2.75g kg -1 ; Total P, 0.11 gkg -1 . The determination results of different petroleum hydrocarbon components are as follows: saturated hydrocarbons 50.5%, aromatic hydrocarbons 20.8%, polar substances 27.7%.

[0019] The impact on soil salinity and germination under different water-to-soil ratio washing salt conditions, according to the results in Table 1, washing salt water to soil ratio should be greater than 0.75, at this time the soil salinity can be reduced from the initial 4.276% to 0.607, ryegrass can Normal ge...

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Abstract

The invention relates to a method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes. The invention belongs to the technical field of environment restoration, and relates to a method for restoring soil by microbe microbial inoculums and plants. The method comprises the following steps: pretreating soil, preparing different microbial inoculums, planting ryegrass, and managing according to the normal requirements for plant growth after sprouting. Microbes and microbial inoculums can cooperate to perform the synergistic action; the addition of the microbe microbial inoculums can promote the plant growth, improve the structure of soil and reduce the pH value of soil, so that environmental conditions which are beneficial to pollutant degradation are formed in the soil. Ryegrass and other garden plants have the functions of promoting petroleum hydrocarbons to degrade and greening the landscape, and can be used as a feed on the premise that the pollutants of the reaped ryegrass do not exceed the standard, thereby having certain economic benefit. The invention enhances the degrading effect of petroleum hydrocarbons, and the degrading rate of petroleum hydrocarbons after five-month growth, can reach 57%. The technique can reduce plowing required by the restoration which only uses microbes and supplement the measures for microbial inoculums, and has favorable effect of removing petroleum hydrocarbons in soil for a long time.

Description

technical field [0001] The invention belongs to the technical field of environmental restoration, and relates to a method for compounding soil with microbial agents and plants. Background technique [0002] The problem of oil pollution in oil field soil is common in our country, which has become an obstacle to clean production and sustainable development of oil fields. Many oilfields in our country are located in coastal saline-alkali zone and areas with harsh ecological environment, the restoration of soil environment and the improvement of ecological environment are the main problems faced by these areas. Therefore, the use of biotechnology can not only remediate oil-contaminated soil, but also effectively improve the ecological environment of oilfield areas. The addition of high-efficiency microbial agents and phytoremediation in the remediation of oil-contaminated soil are currently commonly used bioremediation technologies. However, due to the special properties of sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
Inventor 唐景春董健牛晓伟王敏王如刚周启星
Owner 博川环境修复(北京)有限公司
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