Key Effects of Low-Temperature Evaporator in Landfill Leachate Reduction Treatment

As a highly polluted wastewater generated during garbage landfilling and incineration, landfill leachate is characterized by high COD, high ammonia nitrogen, high salt content, complex and fluctuating water quality. Its reduction treatment is a key and difficult point in environmental protection. Traditional treatment processes are prone to problems such as difficult disposal of concentrated liquid, high energy consumption and secondary pollution. However, low-temperature evaporator, with the advantages of mild operation and efficient reduction, has become the preferred solution for landfill leachate reduction treatment, widely used in various garbage treatment scenarios.

The low-temperature evaporator adopts the principle of vacuum negative pressure evaporation, reducing the system pressure to an appropriate range, making the leachate boil and evaporate at a low temperature of 33-40℃ without high-temperature heating, which fundamentally reduces energy consumption and equipment corrosion risks. In practical engineering applications, the concentration ratio of the equipment can reach more than 95%, up to 99%, which can greatly reduce the volume of landfill leachate. It concentrates a large amount of waste liquid that originally needed to be disposed of externally into a concentrated liquid with a volume of only 5%-10% of the original amount, significantly reducing the pressure and cost of landfilling or subsequent solidification treatment.

While reducing the volume, the low-temperature evaporator can simultaneously achieve water purification. The average conductivity of the distilled effluent after treatment can be as low as 26μS/cm, the average COD is less than 20mg/L, the desalination rate is as high as 99.9%, and the chloride ion concentration is far lower than the industrial reuse standard. It can be directly reused or discharged up to the standard after simple treatment, realizing the recycling of water resources. In addition, the equipment operation does not require adding any chemical agents, and the fully closed negative pressure working condition can avoid waste gas leakage, eliminating secondary pollution from the source and meeting the requirements of environmental compliance.

The equipment has strong adaptability, and can handle landfill leachate of different concentrations and components, including difficult-to-treat waste liquids such as membrane concentrated liquid. It also has a high degree of automation, supporting remote monitoring and unattended operation, which can reduce manual operation costs and improve operational stability. Compared with traditional evaporation technology, it only needs 120-150 kWh of electricity to evaporate one ton of waste liquid, which greatly reduces energy consumption and has obvious advantages in long-term operation economy, providing an efficient, energy-saving and compliant reduction solution for garbage treatment enterprises.