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Industrial Wasterwater Drying Evaporation Crystallization System

The drying crystallization system is used in industrial wastewater zero discharge. It evaporates water in a special designed vacuum condition. Water is evaporated and dry crystallization is left. The water can be reused to production line. It is a true sense of zero liquid discharge.
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The drying crystallization system is used in industrial wastewater zero discharge. It evaporates water in a special designed vacuum condition. Water is evaporated and dry crystallization is left. The water can be reused to production line. It is a true sense of zero liquid discharge.

Greenlan low temperature drying crystallization system is specially designed for ZLD. Under vacuum condition, water boils at 30~40℃. The inside scraper increases evaporation efficiency and prevents scaling on the evaporation tank wall.

drying crystallization effect

In most cases, we can treat the wastewater into solid salt, like copper foil industry, galvanizing industry, pharmaceutical and chemical industry, etc.


Greenlan low temperature drying crystallization system has below features:


-Made by AISI316L/2205/SAF2507 stainless steel or titanium, completely removable.

-Suitable for high salt wastewater & high concentration wastewater, use the built-in scraper to increase efficiency    and crystal separation.

-Heat pump vacuum distillation, using R407C and R134a refrigerants.

-Wastewater intake, distilled water, concentrated liquid effluent are fully automatic operation, completely closed     without emissions.

-The control system uses Siemens PLC and control panel.

-Modular design, compact structure, small footprint, fast and convenient assembly and operation.



Structure Construction:

● Monolithic frame made of austenitic stainless steel.

● The boiling chamber equipped with a saddle-shaped external heat exchanger with an inspection scope.

● Digital and control instruments for automatic system monitoring.

● Equipped with heat exchanger steam condenser and cooling circuits.

● Unique scraper system increases the efficiency of drying crystal separation.



Vacuum Circuit

Condensate discharge and vacuum circuit, consisting of centrifugal pump, vacuum ejector, condensate storage and cooling tank, equipped with heat exchanger, check valve, digital and analog control, monitoring instrument.



Condensation System

● The condensation system is equipped with a heat pump made of the main refrigerant unit, a process    compressor, an ecological refrigerant, a fan heat exchanger, a filter, a pressure switch, a pressure sensor, a cooler.

● Additional cooling units are equipped with auxiliary compressors, control equipment, and filters.

● Speed control system for cooled fan (optional).



Concentrated Discharge Circuit

● Concentrate added automatically, equipped with pneumatic and manual shutoff valve, is used to manually or automatically in the process of wastewater supply.

● Dry crystallization can be adjusted through the program control device or time programming to completely customize the process.

● Scraper structure, increase the efficiency of evaporation, automatically scrape the crystallization of tank wall, to prevent fouling.

● The final dried solid crystals are automatically discharged.



Control Unit

● Siemens PLC control system and control panel

● Spray electrical panel, protection level using high standards

● All of the motor overload automatic circuit breaker

● 24 volt auxiliary circuit

● Fire retardant cable wiring

● Storage tank and the water level automatic control regulator.


S-HP Model

Hourly Capacity
(l/h)

DiHPnsion
(mm)

Energy Consumption Per Ton
(KWH/T)

S-HP 250

10.42

1400 x 900 x 2100

250~280

S-HP 350

14.58

1400 x 1000 x 2100

250~280

S-HP 500

20.83

2200 x 1100 x 2000

250~280

S-HP 750

31.25

2500 x 1200 x 2000

250~280

S-HP 1000

41.67

3000 x 2000 x 2600

250~280

S-HP 1500

62.50

3000 x 2200 x 3000

250~280

S-HP 2000

83.33

3000 x 4000 x 3000

250~280

S-HP 3000

145.83

3000 x 6000 x 3000

250~280

* Other specifications and sizes can be customized for customers


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