Phosphoric acid is extracted and recycled from wastewater because it is a very important inorganic acid and an important intermediate product in the production of fertilizer industry. It is mainly used in the production of chemical fertilizers, industrial phosphates, pharmaceutical phosphates, food phosphoric acid and electronic-grade phosphoric acid, etc. Therefore, the phosphoric acid content in the wastewater generated during the phosphoric acid production process is very high. If it is recycled, it can save the company's costs and achieve resource reuse.
There are many types of phosphoric acid wastewater treatment. Some are wastewater discharge, but because of the high phosphoric acid content, it cannot be directly discharged or biochemically treated, so it is necessary to remove the phosphoric acid before biochemical discharge. In addition, impurities appear in the phosphoric acid solution during the production process, and the solution cannot be used anymore. The impurities need to be removed and the phosphoric acid solution needs to be purified. Both types of wastewater can be operated by solvent extraction. To treat phosphoric acid-containing wastewater and extract the phosphoric acid in it, solvent extraction is used in conjunction with centrifugal extractor. The centrifugal extractor treats impurities in the phosphoric acid solution, purifies the phosphoric acid solution, and recycles it.
The phosphoric acid solution of our customer is mainly a strong acid corrosive solution, phosphoric acid + sulfuric acid = 4:1 (phosphoric acid 85% + sulfuric acid 98%), aluminum ion: 15-25G/L, water: 5-8%, specific gravity: 1.69. The main purpose is to remove 60-70% of the aluminum ions. The solution can be regenerated for recycling or removed multiple times. As long as the aluminum ions can be removed and the phosphoric acid is not destroyed or lost excessively, it will be fine.
According to the customer's situation, we first developed an experimental plan for the customer. Zhengzhou Tiei Extraction Technology Co., Ltd. has the special experimental center and can conduct small-scale experiments for customers. We selected the CWL50-M centrifugal extractor to conduct the purification experiment of phosphoric acid solution. The experimental results showed that it can meet the customer's production requirements. According to the customer's actual processing volume, we selected the CWL450-M industrial extraction equipment for the customer and carried out subsequent installation and commissioning.
Zhengzhou Tiei Extraction is a manufacturer specializing in the research and development and production of centrifugal extractors. The CWL-M series centrifugal extractors have been widely used in extraction, separation, stripping, washing and other operations in many fields.
Waste phosphoric acid solution of this type can be treated by solvent extraction, using CWL-M centrifugal extractor. Specific operation and process equipment details require further communication and detailed understanding. In order to ensure the use effect of the equipment, Zhengzhou Tiei Extraction must conduct experiments before production, and then use industrial equipment after the experiment is successful. Welcome consult us for details.
Email: sales@tieiextraction.com
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