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Membrane technology changes life
Application of membrane distillation in waste acid treatment
Release time:
2024-06-12
SCI-NANO membrane distillation technology uses non-metallic plastic materials and can directly concentrate acidic solutions. It is suitable for processing mixed acids and can concentrate hydrochloric acid to 20% and phosphoric acid and sulfuric acid to 50%. The technology can also handle nitric acid and other organic acid solutions. The acid solution obtained after distillation can be further processed as needed, while the distilled water produced is of high quality and can be directly reused.
The current situation of waste acid:
1. Waste acid comes from various fields, such as chemical industry, surface treatment, alkylation, etc., with many types and scattered distribution.
2. The concentration of most waste acids is low.
3. Waste acid contains a variety of impurities, including organic substances and heavy metals.
4. Waste acid often exists in a mixed state, which increases the difficulty of treatment.
5. Due to the high cost of treatment, some companies may use illegal means to discharge or transfer waste acid.
6. The treatment methods of waste acid include downgrading, making products or converting into acidic wastewater.
Waste acid treatment methods:
1. It can be treated through neutralization reaction, but it requires a large amount of alkali and incurs additional sludge treatment costs.
2. Outsourcing waste acid as hazardous waste, but transportation and treatment costs are higher.
3. It can be made into water treatment chemicals such as iron salt or aluminum salt, which has certain economic value.
4. Purify waste acid for recycling and reduce pollution.
5. Use concentration and cracking technology to recover water resources and produce high-concentration acid for sale.
Membrane distillation technology is an effective method for treating waste acid, especially suitable for concentrating low-concentration acidic solutions. SCI-NANO membrane distillation technology uses non-metallic plastic materials and can directly concentrate acidic solutions. It is suitable for processing mixed acids and can concentrate hydrochloric acid to 20% and phosphoric acid and sulfuric acid to 50%. The technology can also handle nitric acid and other organic acid solutions. The acid solution obtained after distillation can be further processed as needed, while the distilled water produced is of high quality and can be directly reused.
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