Скачать или смотреть The process of cleaning street sludge after water recedes

After the water recedes, street sludge removal requires appropriate methods based on its nature and degree of contamination, primarily employing a combination of mechanical and manual processes. High-pressure water cannons are used to flush away road sludge, while small electric washing vehicles are used to clean sidewalks, curbstones, and other areas. Sprinklers, washing and sweeping vehicles, and other vehicles are used to wash and sweep main and secondary roads, as well as back streets and alleys. Stubborn sludge adhering to the road surface is first removed with tools before high-pressure washing. Priority is given to clearing floating debris, dead branches and leaves, and unclogging drain screens. Key areas (such as old, dilapidated buildings and schools) are thoroughly disinfected and cleaned.

Contaminated sludge (e.g., containing heavy metals) requires passivation treatment to reduce toxicity before safe landfilling or disposal at a landfill for resource utilization (e.g., for agricultural soil improvement).