Industrial Waste Water Treatment Equipment Zero Liquid Discharge Solution Evaporator

Description

Industrial Pain point

Most factories usually treat high salt industrial wastewater through evaporation crystallizer. The existing evaporation crystallizer usually uses traditional steam or electric heating evaporation technology, which consumes high energy, and must be equipped with steam boiler, cold water tower and other equipment, covering a large area.

According to the temperature pressure formula, when the liquid volume is unchanged, the lower the pressure, the lower the liquid boiling point. According to this principle, the low-temperature vacuum evaporator reduces the internal pressure of the evaporator, improves the vacuum degree, reduces the liquid boiling point, and then improves the evaporation speed of the liquid.
Relationship between the boiling point of the water and the vacuum degree
The vacuum degree is maintained at-95 to-97 kPa, and the evaporation temperature is maintained between 40 and 50ºC. Ensure the high heat transfer temperature difference of evaporation in the system, and can reduce the foaming and entrainment of organic matter in the evaporation process.
 

Advantages

The LTZQ series steam crystallizer has the following advantages:

• Evaporation at room temperature, not easy to produce scale;
• Experimental design of efficient vacuum jet system, continuous water output, low maintenance cost, low noise;
• The core electrical equipment adopts imported high-end brands, Siemens PLC, touch screen, anti-material sensor, German BD sensor, electrical components, etc.;
• Equipment operation is simple, humanized operation interface, guiding design (parameter setting, troubleshooting, maintenance reminder, etc.) operators only need to complete the operation step by step operation;
• Ali Cloud platform APP monitoring program can be installed on users mobile terminals and computer terminals, easy to use, no operation threshold;
• Equipment welding personnel shall have the qualification of pressure vessel welding;
• Steam spiral filtration system, built-in steam purification device and reflux structure, can remove more than 95% of the free organic matter and free water, effluent heavy metal is zero, effluent COD than the traditional iteration before the low temperature evaporator increased by 70%, the effluent quality is better and more transparent effluent quality is better;
• WSD patent vacuum tank structure;
• No buffer tank, direct into the liquid crystallization treatment;
• The spiral discharge system can conduct deep crystallization and discharge dry solid material.

Application

Concentration of machining wastewater

Concentration of pickling phosphating solution

Landfill leachate treatment

Concentration of high ammonia nitrogen wastewater

Spraying wastewater treatment

Coating wastewater treatment

Treatment of Wire Electroplating Washing Wastewater

Treatment of polyamide production wastewater

Technical introduction

The heat pump vacuum evaporator, operating at 35-40 ° C, can significantly reduce the COD of distillate and a small amount of discharged concentrate. The technology is low maintenance cost, automated.

The vacuum evaporator can effectively and simply treat wastewater without using reagents. They are very effective even when traditional technologies are not feasible. With the vacuum heat pump evaporator, the wastewater is converted into two streams: one is highly concentrated, and the other is high-quality water (up to the discharge standard). The evaporator works under vacuum conditions to reduce the boiling temperature of wastewater and reduce energy consumption.

Principle of the vacuum heat pump evaporator

 

The operation of the heat pump vacuum evaporator is based on making the stock solution reach its boiling point, which is about 35-40 °C under vacuum conditions.

1. Freon (heat medium) is compressed by the compressor, the temperature rises, and the heat is transferred to the waste water in the evaporation tank.

2. After heat transfer, the raw liquid in the evaporation chamber reaches the boiling point (about 35-40 ºC) under negative pressure.

3. Freon after heat exchange of evaporator is cooled through expansion valve.

4. The expanded low temperature Freon makes the temperature of cooling circulating water lower.

5. The low temperature cooling circulating water makes the vapor formed in the evaporation tank condense rapidly to ensure that the evaporation tank is in a negative pressure state.

Therefore, the system doesn't need any other heating or cooling sources.

This means that the process is very beneficial from an economic and management perspective.

Standard Series