ZLD Flow : Complete Treatment Cycle | Zero Liquid Discharge Plant Cycle.

Taknik Inc. Reframe industrial wastewater management with Zero Liquid Discharge (ZLD) systems.

Our ZLD solutions represent a Framework shift towards sustainability, offering comprehensive treatment processes that eliminate liquid discharge while recovering valuable resources.

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1. ZLD FLOW: COMPLETE
TREATMENT CYCLE
by Taknikinc
“Transforming Industrial Waste into Valuable Resources”

2. INTRODUCTION
A Zero Liquid Discharge (ZLD) system is used to treat
industrial wastewater and ensure that no liquid waste is
discharged into the environment. The process includes
several stages to recover and recycle water while
handling the waste responsibly. Here's an overview of the
steps involved in a ZLD plant

4. 1. NEUTRALIZATION
The first step is to neutralize the pH of the wastewater. Chemicals like lime
or acids are added to adjust the pH so that it becomes safe for further
treatment. This process helps to remove heavy metals and other harmful
contaminants.
2. FILTRATION
After neutralization, the water goes through
filtration. This involves removing solid particles
and sludge using filters like sand filters, carbon
filters, or membrane filters. The goal is to clean
the water of any suspended solids and
impurities before moving to the next stage.

5. 3. FEED TANK
The filtered water is then stored in a feed tank.
This tank holds the water temporarily before it
enters further treatment stages like evaporation
or crystallization.
4. STRIPPING
In the stripping stage, volatile compounds like ammonia
or carbon dioxide are removed. This is done by heating
the water and allowing these compounds to evaporate
and escape from the water.

6. 5. MULTI-EFFECT EVAPORATOR (MEE)
The water is then heated in a multi-effect evaporator, which
boils the water to create steam. The evaporator works in
multiple stages, reusing the steam from one stage to heat the
next, making the process energy-efficient. The water becomes
concentrated as the water evaporates, leaving behind salts and
other dissolved solids.
6. MECHANICAL VAPOR RECOMPRESSION (MVR)
In this stage, the vapor (steam) produced in the MEE is
compressed to increase its temperature and pressure, which
helps in reusing the steam to heat more water. This further
concentrates the wastewater and reduces energy
consumption.

7. 7. CONDENSATE TREATMENT
The vapor collected from the MEE and MVR is
condensed back into clean water. This water, called
condensate, is treated to remove any impurities and
can be reused in the industrial process or
discharged as clean water.
8. AGITATED THIN FILM DRYER (ATFD)
After most of the water has been evaporated, the remaining
slurry or concentrated liquid is dried in an ATFD. This dryer
spreads the liquid in a thin film and uses heat to evaporate any
remaining water, leaving behind solid waste, usually in the form
of dry salts.

8. END RESULT: SOLID WASTE
The solid waste left over from the ATFD
is collected and either disposed of safely
or further processed for reuse,
depending on the nature of the waste.

9. THANK YOU
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9510430147