Evaporator Overview

Why the Need for Evaporator

Principle of Operation of a ZLD Plant

Types of Evaporator System

The Zero Liquid Discharge System's Essential Elements

Evaporators used in wastewater primarily fall in below categories

A)Depending on the type of Vapour compression

1)Thermo Vapour Recompression based Evaporators (TVR based Evaporator)

2)Mechanical Vapour Recompression based Evaporators (MVR based Evaporator)

B)Depending on Type of Liquid Flow

1) Forced Circulation Evaporators – Used in majority of the cases

2) Falling Film Evaporators – Used Rarely

What is Vapour Recompression

Vapour Recompression can be done using –

      1) Thermal Energy using high pressure Boiler steam (Motive Steam) or

      2) Mechanical energy of reciprocating / lobe compressors

A) Thermo Vapour Recompression (TVR) – When Thermal energy is used for vapour compression it is called Thermo Vapour Recompression (TVR) and the evaporator systems are called TVR based evaporators.

B) Mechanical Vapour Recompression (MVR) – When mechanical energy of reciprocating / lobe compressors is used for vapour compression it is called Mechanical Vapour Recompression (MVR) and the evaporator systems are called MVR based evaporators.

Best is Vapour Recompression | Goldfinch Evaporators

Thermo Vapor Recompression Based Evaporator

Please follow the process flow diagram and the description mentioned for Multiple Effect Evaporator System above.

Comparison Between TVR and MVR

TVR

MVR

Advantages of MVRE over TVR

Mechanical Vapour Recompression vs Thermo Vapour Recompression and Advantages of MVR Plants

Comparison of Forced and Falling Film Evaporators

The Evaporator system can be Forced Circulation type or Falling Film type. In the Forced Circulation Evaporators the effluent is pumped through the calendria at a high velocity by the recirculation pump. In the Falling Film Type the liquid trickles from top to bottom forming a thin film along the inside wall of the tube. Generally for handling of effluents Forced Circulation Type evaporators are preferred as they are much more resistant to scaling and salting in the inside of the tubes than falling film type.

Forced Effect

Falling Film

Type of Heating Medium

Below are frequently and easily available heating mediums

Comparison for Steam and Thermic Fluid

Steam, Hot water and Thermic Fluid can be used as the heating medium for evaporators. Steam is preferably used as a heat source for evaporation because it is clean fluid and comparatively the most economical.

Steam

Thermic Fluid

Zero Liquid Discharge

Goldfinch has designed and executed many Zero Liquid discharge (ZLD) projects for various kinds of challenging effluents.

The recycled wastewater is being regularly used as cooling tower make up, vessel washings and sometimes as process water also. We have also installation where the recycled wastewater is used as Boiler feed.

The typical ZLD schemes comprise of Bio – ETP followed by RO. RO reject is evaporated in evaporator. But as in case of high TDS effluents, the ZLD schemes comprise of Multiple Effect Evaporator upfirst. The condensate of MEE is then treated in Bio – ETP followed by RO. The RO reject is then recycled back to MEE in closed loop. 

Goldfinch has successfully designed and executed ZLD projects for speciality chemicals, API, paint effluents etc.

Key Benefits of a ZLD Plant

FAQs

Goldfinch Evaporators specializes in designing, manufacturing, and providing services for Multiple Effect Evaporators (MEE), Mechanical Vapor Recompression Evaporators (MVRE), and Zero Liquid Discharge (ZLD) systems. Our primary goal is to offer efficient and sustainable evaporation solutions for industrial wastewater management across various sectors in India.

Multiple Effect Evaporators (MEE) use the principle of vaporizing water to separate it from contaminants. This system involves multiple stages where steam from one effect is used to heat the next, improving energy efficiency. MEEs are ideal for industries looking to reduce energy consumption and operational costs while achieving effective wastewater treatment.

Mechanical Vapor Recompression Evaporators (MVRE) recycle the vapor produced during evaporation by compressing it to a higher pressure and temperature. This compressed vapor is then used as a heating medium, significantly reducing energy requirements. MVRE systems are highly efficient and suitable for applications requiring energy conservation and low operational costs.

Zero Liquid Discharge (ZLD) is a wastewater management approach that ensures all water is recovered and reused, leaving zero discharge at the end of the process. ZLD systems integrate advanced evaporation and crystallization technologies to recover water and valuable by-products, making them crucial for industries facing stringent environmental regulations.

Goldfinch Evaporators serve a wide range of industries, including pharmaceuticals, chemicals, textiles, food and beverage, and power generation. Our systems are designed to handle diverse wastewater challenges, ensuring compliance with environmental standards and promoting sustainable industrial practices.

Goldfinch Evaporators offers comprehensive services, including system design, manufacturing, installation, commissioning, and maintenance. Our expert team provides tailored solutions to meet specific industry requirements, ensuring optimal performance and longevity of the evaporation systems.

Goldfinch Evaporators adheres to stringent quality control measures throughout the manufacturing process. We use high-quality materials, advanced technologies, and rigorous testing to ensure our products meet international standards. Our commitment to quality ensures reliable and efficient performance of our evaporation systems.

Goldfinch Evaporators stands out for its expertise, innovation, and customer-centric approach. We offer customized solutions, energy-efficient technologies, and robust after-sales support. Our dedication to sustainability and compliance with environmental norms makes us the preferred choice for industrial evaporation needs in India.

Goldfinch’s ZLD systems significantly reduce the environmental footprint of industrial processes by ensuring no liquid waste is discharged. These systems recover and reuse water, minimize waste generation, and promote resource conservation, contributing to sustainable industrial practices and regulatory compliance.

To discuss your evaporation needs and get a tailored solution, you can contact Goldfinch Evaporators through our website’s contact form, email us at [email protected], or call our customer service helpline. Our team is ready to assist you with expert advice and comprehensive support.