Patent ID: 11919058
Assignee: CHENGDU UNIVERSITY OF TECHNOLOGY
Field: Environmental technology (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 0:
1. A method for remediating petroleum hydrocarbon contamination in groundwater, comprising the following steps:
detecting a soil particle size of contaminated site soil, and dividing the contaminated site soil into coarse-grained soil and fine-grained soil according to the soil particle size;
dividing the contaminated site soil into high buffer capacity soil and low buffer capacity soil according to a buffer performance of the contaminated site soil; and
adjusting composition and a ratio of a biostimulant solution added to the contaminated site soil based on a classification of the contaminated site soil, so as to improve the ability of microorganisms in the contaminated site soil to degrade petroleum hydrocarbons,
wherein the step of dividing the contaminated site soil into high buffer capacity soil and low buffer capacity soil according to the buffer performance of the contaminated site soil comprises: adding 10 mM citrate buffer solution to the soil to classify the soil with pH<4.5 as low buffer capacity soil and classify the soil with pH>4.5 as high buffer capacity soil.