Acid Recovery Diffusion Dialyzer-Acid Recovery Diffusion ED-Hangzhou Create Environment & Energy Technology Co

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191 0679 9768

191 5768 9268

Acid Recovery Diffusion ED

PRODUCT

Membranes & Components Membrane Module

Tel-Phone

Project Cooperation

19106799768
19157689268

【Product Overview】

An efficient and energy-saving waste acid treatment system, specifically engineered for the resource recovery of industrial waste acid streams.

【Product Parameters】

Name	CreaDD-II	CreaDD-VI
Empty load	180kg	800kg
Production Capacity (H₂SO₄)	2(t/d)	12(t/d)
Production Capacity (HCl)	2.5(t/d)	15(t/d)
Metal Ion Rejection Rate	80%~90%
Recovered Acid Concentration	80%~90%
Operating Temperature	20~40℃
Maximum Concentration (H₂SO₄)	4-40%
Maximum Concentration (HCl)	3-20%
Maximum Concentration (Mixed Acid)	[H⁺] ≤ 6 mol/L
Metal Salt Content Requirement	Total Metal Salt Concentration : Total Acid Concentration ≤ 1 : 10

【Product Advantages】

Reduce Operating Costs
Enhance Product Quality & Purity
Minimize Pollutant Discharge
Offer Excellent Scalability & Flexibility

【Water quality conditions】

Feed Water Quality Requirements
Water Temperature	20~35℃	Optimal Operating Temperature	25~30℃
Suspended solids	<1mg/L	H+Concentration	＜6mol/L
Alkalinity	<50ppm (Calculated by calcium carbonate)	COD	<200mg/L

【Application Fields】

Titanium Dioxide & Steel Industry
Titanium Dioxide Production: Large amounts of waste sulfuric acid are generated during production. Diffusion dialysis (DD) membranes efficiently recover free sulfuric acid for reuse in the acid digestion process, while simultaneously concentrating ferrous sulfate (which can be used to produce iron-based products), reducing waste acid treatment costs.
Steel Pickling: Spent pickling acid is treated with membrane separation, allowing acid reuse in the pickling line and concentration of metal ions for recovery.
Anode Foil & Hydrometallurgy
Anode Foil Production: The anodization process for aluminum foil produces waste phosphoric/sulfuric acid containing Al³⁺. Membrane technology recovers the acid, improving electrolyte recycling rates.
Hydrometallurgy: Waste acid from processes like nickel, cobalt, and rare earth extraction is treated. The acid is reused in the leaching circuit, and metal ions are further extracted, minimizing resource waste.
Battery & Electroplating Industry
Lead-Acid Batteries: Waste acid is processed during membrane separation to recover pure sulfuric acid, while lead-containing sludge is valorized.
Electronics Plating: Mixed acid waste streams from electroplating are treated. Acid is reused in the plating line, and metals like copper and nickel are concentrated and purified.
Aluminum Profiles & Rare Earth Industry
Aluminum Profile Surface Treatment: Waste acid containing Al³⁺ and F⁻ is generated. Membrane systems enable acid regeneration, and fluorides can be treated separately.
Rare Earth Smelting: Waste acid from rare earth冶炼 is recovered and reused in the extraction stage, reducing fresh acid consumption and discharges of radioactive wastewater.
Pharmaceutical & Pesticide Manufacturing
Pharmaceuticals: Waste organic acids (e.g., oxalic acid, citric acid) from processes like antibiotic and API synthesis are separated and recovered, while organic compounds are retained for treatment.
Pesticides: Waste acid containing phosphorus/sulfur is purified and reused, reducing hazardous waste generation.
Polysilicon & Graphite Industry
Polysilicon Cutting: Mixed acids are recovered from silicon kerf slurry waste, and silicon powder can be purified and reused.
Graphite Acid Leaching: Waste acid from graphite processing is recovered via membrane treatment, and graphite residue is further processed, enabling cleaner production.

191 0679 9768 191 5768 9268