What are the different chemical technologies in waste management? Explain the advanced treatment methods used in the treatment of solid waste.

In the context of smart cities, effective waste management is crucial for ensuring safe water, sanitation, and overall sustainability. Various chemical technologies play a significant role in managing waste, particularly in advanced treatment methods for solid waste.

### Chemical Technologies in Waste Management:

1. Chemical Precipitation: This process involves adding chemicals to waste streams to form insoluble compounds, which can then be separated and removed. It's often used to treat industrial wastewater containing heavy metals. For example, lime _____ __________ ___ _____ ______ _________ _____ ________ ________.
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