Ammonia Nitrogen Pollution Control Strategy and Water Quality Standard Safeguard Measures for Surface Water in a County
A county is one of the birthplaces of ionic medium and heavy rare earths,and the in-situ leaching rare earth mining process has caused a certain degree of ammonia nitrogen pollution in surface water.This paper summa-rized the status of ammonia nitrogen pollution in surface water in this region,analyzed the pollution hazards of am-monia nitrogen in water to human health and ecological environment,proposed a water ammonia nitrogen pollution control strategy combining"source control,sewage interception,dredging and restoration",and proposes source control measures such as ammonia-free leaching and optimization of leaching process,dredging measures such as manual dredging and biological dredging,and restoration of water bodies from in-situ and off-situ sources.Finally,the water quality safeguard measures are expounded from the perspectives of organization and management,institu-tional measures and financial guarantee,aiming to lay the foundation for the control of ammonia nitrogen pollution in water bodies.
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