Waste Acid for Heavy Metal Removal

Acid pickling is a widely used process in the steel industry, but it generates a large amount of waste acid and poses a great threat. If discharged directly without treatment, it will not only cause irreversible serious pollution to the environment, but also a great waste of resources. The overall quality of the environment and the overall pressure of resource consumption are very severe, and it is urgent to develop a circular economy, improve resource utilization and output rates. Haipu Company's "Waste Acid Recycling and Reuse" program not only reduces cost investment for enterprises, but also effectively protects the environment, making it a model for promoting the resource utilization of industrial waste acid. The special adsorption material researched by Haipu Company can selectively separate metals from waste acid, thereby achieving the recycling and reuse of waste acid resources.

Process flowchart

Scope of application

Metal surface treatment (such as acid washing and corrosion of stainless steel, aluminum, copper, iron and other metals), metal containing acid washing solutions generated during wet metallurgy processes, and waste acids containing organic matter generated in fine chemical, pesticide, dye and other industries.

Advantage

1. Adsorption treatment of waste acid can improve its quality without reducing its concentration, thereby enabling direct reuse of waste acid and resource utilization of production by-products;

2. Reduced the cost of purchasing acid, neutralization, and heavy metal treatment, enabling effective utilization of resources;

3. The process flow is simple, the footprint is small, and the fixed investment cost is low.

Waste acid adsorption treatment data

Case 1 Adsorption of inlet and outlet water data

Indicator	Water volume	Cobalt	Lithium	Aluminium	SS	Turbidity
Indicator	（m³/d）	（mg/L）	（mg/L）	（mg/L）	（mg/L）	（NTU）
Device water inlet	≤24	≤1150	≤1700	≤770	≤5	≤5
Device effluent	≤24	≤1	≤10	≤300	≤5	≤5
Primary desorption solution	≤1.5	14000~17000	4000~6000	1000~2000	-	-
Secondary desorption solution	≤1.5	200~1000	15000~20000	5000~7000	-	-

Innovative Materials Technology/Service Energy Metals/Leading the Resource Cycle

Service Process

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