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MLD / ZLD

Concentrate before the thermal step.

Evaluate membrane preconcentration ahead of evaporation or crystallization in minimum liquid discharge (MLD) and zero liquid discharge (ZLD) treatment trains.

Discuss this application
Industrial water-treatment facility with pumps, pipes, and membrane pressure vessels.
Illustrative application setting; not a NEXT TFX installation.

APPLICATION NOTE

Define the opportunity.

The application objective is to recover additional water and reduce the liquid volume requiring downstream thermal treatment. TFX-BCRO is an upstream concentration pathway; it is not presented as a complete stand-alone ZLD system.

This application note adapts the supplied company portfolio and brochure. The evaluation steps below describe how to scope a project; they are not a process-performance guarantee.

PROCESS CONTEXT

Connect membrane concentration to the next step.

Pretreated feed

Defined chemistry and process duty.

TFX membrane stage

Evaluate additional water recovery.

Concentrate

Meet the downstream feed requirement.

Further treatment

Evaporation, crystallization, or dedicated recovery as required.

Conceptual sequence only. The membrane permeate is a separate outlet; required polishing, stage recycle, and final configuration are duty-specific.

EVALUATION FRAMEWORK

Specify the feed. Define success.

  1. 01

    Define the final endpoint

    Specify the liquid and solid outputs required from the complete treatment train.

  2. 02

    Evaluate the membrane endpoint

    Assess feed chemistry, scaling, fouling, membrane rejection, and feasible concentration under the intended duty.

  3. 03

    Connect the unit operations

    Calculate the downstream evaporator or crystallizer feed after including permeate handling and recycle.

COMMON QUESTIONS

Keep the boundaries clear.

Are thermal-energy savings guaranteed?

No fixed energy-saving percentage is stated. Quantify the actual membrane and thermal duties within the same process boundary.

Does membrane preconcentration itself achieve ZLD?

The proposed role is upstream water recovery and brine-volume reduction. Any final liquid elimination or solids production must be established for the complete process.

RELATED NEXT TFX RESOURCES

Continue the technical discussion.

MEMBRANE EVALUATION · PROTOTYPE ELEMENTS · PILOT PARTNERSHIPS

Define your application.

Share the feed, flow rate, temperature, recovery target, and product-water requirement. We will help scope an application-specific evaluation.

Request a technical evaluation