Printing and dyeing wastewater contains a large number of organic matter and inorganic salts, many of which are easy to form scale inhibition. Therefore, efficient and economical scale inhibition technology is very important for printing and dyeing wastewater treatment. In this paper, we will introduce the chemical scale inhibition scheme for the treatment of printing and dyeing wastewater by mechanical evaporative regeneration (MVR) technology.
MVR technology is a low-temperature evaporation technology that uses the heat of condensate**. This technology evaporates the water in the wastewater by continuously collecting condensate, thereby realizing the separation and purification of various substances in the wastewater. MVR technology can efficiently treat printing and dyeing wastewater, which can effectively separate organic matter and inorganic salts in wastewater, and greatly reduce the scale inhibition rate.
The researchers experimentally verified the scale inhibition effect of MVR technology in the treatment of printing and dyeing wastewater. The experimental results show that the combination of MVR technology and chemical scale inhibitor can reduce the scale inhibition rate in the process of printing and dyeing wastewater treatment. The combination of chemical antiscalants and MVR technology can inhibit the reaction between organic matter and inorganic salts to form scale inhibitors. In addition, chemical scale inhibitors can also promote the deposition of calcium and magnesium ions in printing and dyeing wastewater, form stable calcium carbonate and magnesium carbonate, and reduce the occurrence of scale inhibition.
Finally, the researchers also studied the application effect of the improved chemical scale inhibition scheme under different MVR technical parameters. The experimental results show that the chemical scale inhibitor can effectively reduce the scale inhibition problem in printing and dyeing wastewater under different MVR technical parameters. Chemical antiscalants can achieve varying degrees of scale reduction at different concentrations, temperatures, and flow rates without adversely affecting other properties of the wastewater.
The study of chemical scale inhibition scheme for the treatment of printing and dyeing wastewater by MVR technology can effectively reduce the incidence of scale inhibition in printing and dyeing wastewater. By combining MVR technology with chemical scale inhibitors, researchers can achieve high evaporation efficiency and chemical scale inhibition effect of printing and dyeing wastewater. Future research will continue to optimize the ratio and application of chemical antiscalants, and improve the scale inhibition efficiency and treatment effect of MVR technology in the treatment of printing and dyeing wastewater.
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