introduction

Wastewater discharged during the production and use of pesticides. Due to the wide variety of pesticides and the complex water quality of pesticide wastewater, its main characteristics are: high pollutant concentration, COD can reach tens of thousands of milligrams per liter; high toxicity, in addition to pesticides and intermediates, the wastewater also contains phenol, arsenic, mercury, etc. Hazardous substances and many substances that are difficult to biodegrade; have foul smell and are irritating to human respiratory tract and mucous membrane; water quality and volume are unstable. Pesticide wastewater treatment methods mainly include distillation, extraction, adsorption, precipitation, concentration incineration, oxidation, biochemical, reverse osmosis, activated carbon-biofilm, etc. At present, high-toxicity and high-residue pesticides are generally reduced in various countries, and high-efficiency and low-residue pesticides are increasingly used, and they are developing in the direction of biological pesticides. This is the fundamental way to prevent pesticide wastewater pollution.

features

Product Details:

  Preheater: In most cases, the solution to be evaporated must be heated before entering the evaporator.

  Heater: The solution to be evaporated exchanges heat with the heat source steam in the evaporator to produce evaporation. Choose different types of evaporators according to the properties of different solutions.

  Separator: Used for the separation of steam and liquid. Different separators can be selected according to the properties of different solutions. Generally, there are centrifugal separators, gravity separators or separators with special structures.

  Vacuum system: maintain the vacuum of the entire system, and extract part of the air, non-condensable gas and the gas brought in by the solution from the device to achieve a stable evaporation state of the system.

  Pump: transport the solution to be evaporated and the concentrated solution. Choose different types of pumps according to different nature of the solution, generally centrifugal pumps, positive displacement pumps, screw pumps can be used.

  MVR compressor system: Provides evaporation heat source by compressing the secondary steam to improve the heat simmer of the secondary steam. A variety of compressors can be selected according to the requirements of different flow rates and compression ratios. For increased pressure rise, multi-stage compressors can be used in series.

  Control system: In the middle of the control of the MVR evaporation system, through the adjustment of the motor speed, the control of valves, flow meters, temperature and pressure. In order to achieve automatic evaporation, cleaning, shutdown and other operations. Automatic alarm, automatically protect the system from damage, and maintain the dynamic balance of the system.

  Cleaning system: After different solutions have evaporated for a period of time, scaling may occur. Generally speaking, more than 99% of the scaling can be removed by adding chemical solvents. Generally, CIP in-situ cleaning or removal cleaning can be used.

Features:

  1. The amount of evaporated water can reach 1t/h~100t/h

      2. Only electricity is used during normal operation.

      3. It is the most energy-saving evaporator at present, mostly single-effect evaporation, small heating temperature difference, short residence time, suitable for heat-sensitive materials.

      4. Compact structure and small floor space.

      5. The equipment realizes automatic operation through PLC control, and can operate continuously and stably for a long time.

According to the specific parameters of sewage or wastewater provided by the user, we can propose a process plan that can not only meet the drainage standard but also achieve good economic efficiency and good comprehensive performance, and manufacture equipment that is satisfactory to the user.