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

Claim 7:
8. The method for remediating petroleum hydrocarbon contamination in groundwater of claim 7, wherein, when the buffer performance of the contaminated site soil is low buffer capacity, calcareous and low-iron soil, a third concentration of low-molecular organic acid chelating agent is added into the soil, wherein the third concentration is configured in such a way to be less than the Ca2+ content in the contaminated site under the current situation, and the first salt chelating agent is simultaneously added into the soil so that the overall content of SO42− provided by multiple sources of the first salt chelating agent and/or low-molecular organic acid chelating agent is in the range of the first acceptor.