Preparation method and implementation technology for petroleum-contaminated soil remediation agent system

Abstract

The invention provides a preparation method and an implementation technology for a petroleum-contaminated soil remediation agent system, and relates to a preparation method and an application method for a soil remediation agent. The soil remediation agent system is composed of soil conditioning liquid, a petroleum hydrocarbon degrading bacterium agent, a solid waste carrier, a biological polymer bacterial agent and a nutrient solution. The implementation technology comprises the operation steps that the soil conditioning liquid is sprayed firstly, then the petroleum hydrocarbon degrading bacterium agent is sprayed, an oxygen increasing agent is spread, then the biological polymer bacterial agent is sprayed, solid fertilizer carrier particles are spread, and finally the biological polymer bacterial agent is sprayed again. According to the preparation method and the implementation technology for the petroleum-contaminated soil remediation agent system, the petroleum-contaminated soil remediation agent system can improve the dissolution effect of petroleum and soil, promote the growth of petroleum hydrocarbon microorganisms and inhibit the reproduction of harmful microorganisms; for 5% or less of the petroleum-contaminated soil, the petroleum degradation rate reaches 39-43.7% under the condition that the temperature is 5-10DEG C; and the petroleum degradation rate reaches 59.8% under the condition that the temperature is 15-20 DEG C, and the petroleum degradation rate reaches more than 87.5% under the condition that the temperature is 25-30DEG C.

Description

technical field [0001] The invention relates to a preparation method and an application method of a soil remediation agent, in particular to a preparation method and an implementation process of a petroleum-contaminated soil remediation agent system. Background technique [0002] The petroleum industry is one of the pillar industries of our country's national economy and has a great impact on the development of our country's national economy. Oilfield exploitation has gone through primary oil recovery, secondary oil recovery and tertiary oil recovery. The currently widely used chemical ASP flooding technology is a high-efficiency enhanced oil recovery technology developed in the tertiary oil recovery stage at home and abroad, but it pollutes the soil extremely Large, and the contaminated soil is difficult to reuse. Bioremediation is a relatively environmentally friendly treatment method for oil-contaminated soil. The existing bioremediation technologies are basically based ...

AI Technical Summary

Problems solved by technology

Oilfield exploitation has gone through primary oil recovery, secondary oil recovery and tertiary oil recovery. The currently widely used chemical ASP flooding technology is a high-efficiency enhanced oil recovery technology developed in the tertiary oil recovery stage at home and abroad, but it pollutes the soil extremely Large, and the contaminated soil is difficult to reuse

Bioremediation is a relatively environmentally friendly way to treat oil-contaminated soil. The existing bioremediation technologies are basically based on typical farming methods, stacking methods, and composting methods. low, low contact efficiency between crude oil and remediation materials (fertilizers, bacteria, regulators), long remediation cycle and low remediation efficiency, it is difficult to be widely promoted