Core Insights - The article discusses the introduction of the "Technical Guidelines for River Dredging (Multi-Purpose Dredging)" by the Suzhou Water Authority, marking the first systematic dredging technical standard in Jiangsu Province [1][2] - The guidelines incorporate the "4W" theoretical framework, addressing the reasons for dredging, what to dredge, how to dredge, and how to handle the dredged materials, thereby providing a scientific and standardized approach to dredging in Suzhou [1][2] Summary by Sections - **Introduction of Technical Guidelines** - The guidelines aim to improve flood control, water resource management, and ecological water quality in the context of increasing urbanization and sediment accumulation in rivers [1] - Traditional dredging methods have been criticized for their unclear objectives, inefficient practices, and potential for secondary pollution [1] - **Ecological and Environmental Considerations** - The guidelines emphasize an ecological priority and scientific planning throughout the dredging process, aiming to minimize land occupation, avoid disturbances to residents, and prevent secondary pollution [2] - Specific measures include ensuring that the handling of sludge prevents secondary pollution and adheres to wastewater discharge standards [2] - **Implementation and Future Prospects** - The guidelines are intended to transition Suzhou's dredging operations from traditional methods to modern, intensive practices, with the potential for these guidelines to be elevated to local standards after thorough validation [2] - The guidelines are applicable to urban river multi-purpose dredging projects and can be referenced for lakes and other water bodies based on actual conditions [2]