Humic acid function to environmental protection.In recent years, researchers have been investigating the application of humic acid in environmental protection, and many achievements have been applied to production practice.
The humic acid-based exchanger has a high removal rate of dyeing contaminants in the treatment of industrial wastewater, and the process is simple and the cost is low.
Humic acid green environmental protection We used humic acid and aluminum salts as flocculants for printing and dyeing wastewater. The effects of the amount of sodium humate and aluminum salts and the pH value of wastewater on COD removal rate were discussed.
It is found that this method has higher purification efficiency and provides an experimental basis for the promotion of industrial wastewater treatment, which is technically feasible.
At present, the treatment methods for electroplating wastewater containing heavy metal ions such as pd2+.Cu2+.Zn2+.Ni2+.Cr3+ are mainly divided into two categories: one is to convert metal ions in solution into insoluble substances, such as chemical method, electrolytic reduction method, etc.
The other type is condensation separation without changing the chemical form of metal ions, such as ion exchange and exchange fiber. However, the chemical process and the electrolytic reduction process generate a large amount of sludge during the treatment, which requires further treatment. The ion exchange method has a better treatment effect, but the cost of treating wastewater is relatively high.
Therefore, how to produce an inexpensive ion exchanger is the key to solving the large-scale use of the ion exchange method. The price of peat is low, including humic acid, aliphatic, aromatic, methoxy fluorenyl, and other reactive groups, which can exchange ion with heavy metal ions in water, complexation reaction and surface adsorption. The experiment staff used peat as the peat.
The adsorption and desorption of Pd2+, Cu2+, Zn2+, Ni2+ and Cr3+ in water were studied under the dynamic conditions. The adsorption and desorption regeneration mechanism and the treatment of electroplating wastewater by humic acid resin were discussed. Feasibility has opened up a new method for the comprehensive treatment of electroplating wastewater.