The metallurgical industry is one of the most important basic industries in China, and the main technologies of metallurgy are pyrometallurgy, hydrometallurgy, and electrometallurgy, among which the development of hydrometallurgy is particularly significant. The concentration and enrichment, impurity removal and purification during the wet metallurgical extraction process, as well as the treatment of large amounts of acid, alkali, heavy metals and other types of wastewater discharged during production, have always been the difficulties in enterprise wastewater treatment.
With the increasing emphasis on ecological environment protection by the country and the gradual tightening of pollutant discharge standards, higher requirements have been put forward for the treatment of metallurgical industry wastewater. A small amount of heavy metal elements and harmful elements in wet metallurgical wastewater exceed the standard for discharge, and the acidity in the wastewater is high. Neutralization method cannot achieve acid recovery and utilization, so there are certain differences in the demand for wastewater treatment.
The main treatment requirements for metallurgical industry wastewater are as follows:
Treat the discarded acid leaching solution, recover the acid, return it for reuse, and improve resource utilization efficiency.
Deeply treat metal ions or fluorides in wastewater to ensure that the effluent meets the standard.
The oil (extract, etc.) in the deep acid leaching solution reduces the COD of the acid, improves the utilization rate of the acid leaching solution, and reduces production costs.
Haipu adsorption technology
Jiangsu Haipu Functional Materials Co., Ltd. is committed to the research and industrialization of high-performance adsorbents and catalysts. Through years of independent research and development, we have achieved international leading levels in ion exchange technology, adsorption technology, nano inorganic material hybridization technology, etc., realizing the serialization of adsorption and catalytic products, and successfully applying them in the fields of environmental protection and resource recycling. With a series of independently developed high-performance adsorbents and catalysts as the core, combined with independently developed process technology, Haipu has become a professional supplier of green and environmental protection solutions.
Main technical features
01. By using different special materials, continuous, efficient, and stable deep treatment of heavy metal ions, fluorides, and dissolved oils can be achieved, which can meet stricter emission limits (such as nickel<0.1 mg/L, copper<0.5 mg/L, lead<0.5 mg/L, fluoride<1mg/L, oil<1 mg/L, etc.)
02. Efficiently recover acid from waste acid (recovery rate>80%), improve the utilization rate of production raw materials, and reduce production costs;
03. Based on the customer's water quality and R&D data, provide customized solutions;
04. Optimize processing technology to achieve the lowest raw material consumption, reducing project investment and operating costs for enterprises;
05. Modular component form, occupying less space, compact structure, high degree of automation, and simple operation;
06. Advanced and mature technology, no secondary pollution, strong technical support and rich engineering application experience.
Haipu Application Case
Application case of Haipu nano adsorbent technology
01. Oil removal treatment of residual liquid wastewater
Treating 280t/d oily wastewater from a metallurgical enterprise to remove oil and metal ions, reducing COD and ion content, and solving the problem of wastewater treatment in the enterprise.
| Name | COD(mg/L) | Nickel (mg/L) | Fluorine (mg/L) | Appearance |
| Raw water | 1640 | 10.2 | 1603 | Canary yellow |
| Water outlet | <50 | <0.1 | <1 | Water clear |
Wastewater treatment data
02. Lead containing waste acid treatment project
Process design was carried out for a 50t/d lead containing waste acid in a certain steel wire rope processing enterprise to reduce the cost of waste acid treatment. The original cost of waste acid treatment was 6000 yuan/ton. After using adsorption technology to remove lead ions, the outsourcing cost of waste acid treatment was reduced to 300-400 yuan/ton, greatly reducing the cost of waste acid treatment for the enterprise. It can save tens of millions of yuan for the enterprise every year.
| Aluminum content in raw water | Lead content in effluent | Removal rate |
| 1086 mg/L | 8.13 mg/L | 99.25% |
| 1086 mg/L | 6.66 mg/L | 99.39% |
| 1086 mg/L | 7.08 mg/L | 99.35% |
Lead removal by waste acid adsorption
03. Nickel containing treatment project
The nickel ion concentration in the nickel containing wastewater generated during the production process of a certain electroplating enterprise is~2mg/L. The enterprise requires that the nickel content be reduced to 0.1mg/L after treatment, which belongs to deep nickel removal and has relatively high requirements for the process. The experimental results show that the removal rate of nickel ions by adsorption is as high as 97.5%, and the nickel ions in the adsorbed water are reduced to 0.05mg/L, which can meet the requirements of the enterprise and reduce the pressure for the subsequent treatment of enterprise wastewater, ensuring the normal production of the enterprise.
| Nickel content in raw water | Nickel content in effluent | Removal rate |
| ~2mg/L | <0.05 mg/L | >97.5% |
Nickel removal by wastewater adsorption
04. Heavy metal catalyst wastewater resource treatment project
The catalyst wastewater from a petrochemical enterprise contains heavy metal ions such as nickel, aluminum, and lithium, as well as about 3% citric acid. Adsorption treatment of the wastewater resulted in nickel, aluminum, and lithium in the effluent meeting the requirements of the enterprise. At the same time, the recovery of nickel and citric acid was achieved, avoiding the discharge of heavy metals and COD, and solving the problem of wastewater treatment in the enterprise.
| Name | Nickel (mg/L) | Aluminum (mg/L) | Lithium (mg/L) |
| Raw water | 706.3 | 1108.2 | 97.5 |
| Water outlet | 0.05 | 20 | 8 |
| Removal rate | 99.99% | 98.20% | 91.80% |
Wastewater treatment project
05. Online recovery and treatment project for waste acid containing metal ions
Design an online recovery process for 80t/d waste acid from a certain steel group, which greatly reduces the acidity of the adsorbed water and can be treated according to the needs of the enterprise. Recycling 80 tons of acid solution per day, which can be mixed with concentrated acid and reused in the production process to achieve acid recycling and reduce production costs and waste acid treatment expenses for enterprises。
| Name | Water volume | Iron (mg/L) | Nickel (mg/L) | Fluorine (mg/L) | Acidity |
| Raw water | 80 t/d | 21200 | 22750 | 10000 | 17.20% |
| Adsorbed water | 80 t/d | 14840 | 15925 | 4700 | 4.39% |
| Recycling acid | 80 t/d | 5300 | 6825 | 5431 | 12% |
Adsorption inlet and outlet water data
Partial engineering images
CN