T/ACEF 183-2025 Guidelines for in-situ bioremediation and chemical treatment of groundwater contaminated with chlorinated hydrocarbons

Scope

Scope: This document covers the technical feasibility study of in situ remediation technologies for chlorinated hydrocarbon contamination of groundwater in terms of biological and chemical aspects, the key points of technical scheme design, construction processes, and operation and monitoring requirements, and also stipulates the guiding principles for technology screening and coupling and integration. This document is applicable to technology screening, technical scheme formulation, construction process selection, and monitoring and evaluation of remediation effects in chlorinated hydrocarbon contaminated groundwater remediation or risk control projects. This document is not applicable to the specific work procedures, technical requirements, and detailed construction organization design of site investigation for each in situ remediation technology. Main technical content: This standard covers five unit technologies, including enhanced in situ anaerobic bioremediation, in situ biogeochemical transformation, surfactant-enhanced in situ leaching, sulfate-based in situ chemical oxidation, and in situ chemical reduction. Each chapter is dedicated to a single technology, and each chapter details the technical feasibility study (including technical suitability assessment, pilot and demonstration methods), technical scheme design, construction, operation, and monitoring. The technical scheme design unifiedly covers remediation materials, dosage, construction processes, and remediation layout, aiming to provide practical guidance for the application of these five in situ remediation technologies. Chapter 10, "Guiding Principles for Technology Screening and Coupling and Integration," provides guidance on technology screening and multi-technology coupling in terms of time or spatial dimensions.

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