Comprehensive Utilization of Secondary Aluminum Ash and Production of Poly Aluminum Water Purifying Agent in Electrolytic Aluminum Industry Impact on Water Environment
Comprehensive Utilization of Secondary Aluminum Ash and Production of Poly Aluminum Water Purifying Agent in Electrolytic Aluminum Industry Impact on Water Environment
A large amount of secondary aluminum ash is produced in the production process of electrolytic aluminum industry in China.At present,most enterprises treat it as hazardous waste,however,some enterprises began to try to use aluminum and aluminum oxide in aluminum ash to produce liquid polyaluminum water purifying agent.This paper briefly describes the process of producing polyaluminum from secondary aluminum ash,analyzes and detects the possible residual fluorides and heavy metals in liquid polyaluminum,evaluates whether the above pollutants will cause secondary pollution to water body,and finally gives conclusions and suggestions on whether the secondary aluminum ash is suitable for producing polyaluminum.
关键词
电解铝/二次铝灰/综合利用/氟化物/重金属
Key words
electrolytic aluminum/secondary aluminum ash/comprehensive utilization/fluoride/heavy metal
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