Sodium sulfate wastewater is extensive, and many industries will produce this kind of wastewater, and today we exchange the best is the sodium sulfate wastewater treatment problem produced by chemical enterprises.
1. Characteristics of sodium sulfate wastewater
Generally, the salt content of sodium sulfate wastewater in chemical enterprises is relatively high, because there is no way to directly carry out biochemistry.
2. Sodium sulfate wastewater treatment process
When selecting evaporation crystallization sodium sulfate, it is necessary to select the evaporator required according to the treatment capacity of sodium sulfate evaporation crystallization and the characteristics of the boiling point of the saturated solution.
According to the characteristics of sodium sulfate, most of the mainstream processes on the market recommend MVR multi-effect evaporation crystallization membrane concentration + low-temperature evaporation disposal process, which is relatively energy-saving and consumption-saving. In particular, the low-temperature evaporation treatment process of ultra-concentrated wastewater at the end has low evaporation temperature, is not easy to scale and block pipes, and has high efficiency.
3. AdoptionLow temperature evaporationProcess advantages
In the low-temperature evaporation crystallization system, under the action of the vacuum system, the vacuum degree in the vacuum evaporation tank rises, and the wastewater is sucked into the distillation kettle through negative pressure. The wastewater is heated by external steam after reaching the middle level in the distillation kettle, stopping the liquid intake, and reaching the set value of the vacuum. The low-boiling components in it are evaporated. The high-boiling components of the wastewater remain in the distillation kettle in the form of a concentrate. The concentrate is automatically discharged through the equipment. The steam enters the cooler along the pipe, where it is exchanged with the external condensing system into a liquid state, and the distilled water is discharged along the outlet pipe.
Process advantages
1. The evaporation temperature is low, and a large number of high boiling point organic matter and low boiling point organic matter are not easy to evaporate, so the effluent effect is better, and the evaporated produced water can reach the standard reuse or discharge standard with simple treatment
2. With the decrease of evaporation pressure, the boiling point of some solutions is also decreasing, which can improve the evaporation space and increase the concentration ratio of the mother liquor more until the concentrate crystallizes and solidifies
3. The evaporation temperature is low, the equipment material selection is wider (the temperature has a particularly large impact on the corrosion of the equipment, and the evaporation at low temperature can improve the service life of the equipment), and the equipment investment cost is lower. And for some raw materials that need to be evaporated under weak acidic conditions, low-temperature evaporation can achieve a good effect without affecting the equipment;
4. The low-temperature evaporation equipment has high integration and low requirements for on-site installation conditions, which can meet the needs of customers to put into production as soon as possible
5. The low temperature evaporation equipment has a high degree of automation, which can help customers save a lot of manpower and material costs.
The patented technical achievement of Kunshan Weishengda environmental protection equipment - low-temperature evaporation crystallization system has been widely used in the field of zero discharge of high-salt wastewater, and has achieved quite good treatment results and has been praised by many users. The low-temperature evaporation crystallization system process of Wasenda can help achieve zero discharge of high-salt wastewater, and completely solve the pain point of difficult disposal of high-salt and high-COD wastewater at the end of the wastewater treatment system.