Zero Liquid Discharge (ZLD) Design

Description

This Zero Liquid Discharge eBook from 3D-LABS is written for engineers and students who want a clear, practical reference they can apply immediately.

Zero Liquid Discharge (ZLD) Design is a practitioner-level engineering book covering zero liquid discharge system design for the industries where CPCB has made it mandatory — pre-treatment, membrane concentration, thermal evaporation, crystallisation and salt recovery. It is written for the engineer who has to make a ZLD train work on real effluent, at a power cost the plant can survive.

What format does this book follow and what standards does it reference?

Each stage is presented as design basis, sizing calculation and worked example on a 500 m³/day textile effluent and a smaller distillery stream. References include CPCB directions on zero liquid discharge for the highly polluting industry categories, the Water Act 1974 consent framework, CPCB OCEMS connectivity requirements, and ASME Section VIII Division 1 for evaporator and crystalliser pressure parts.

How is the membrane train designed and protected?

The RO train is designed from the feed water analysis: scaling indices, silica and hardness limits, antiscalant selection, and the recovery at which each sparingly soluble salt reaches saturation. Ultrafiltration pre-treatment, cartridge filtration, and the high-recovery stages — disc-tube and high-pressure RO — are sized with flux, pressure and cleaning frequency stated. Membrane fouling and the CIP regime are treated as operating realities, not footnotes.

What drives the choice between MEE and MVR?

Multiple-effect evaporation and mechanical vapour recompression are compared on steam or electrical energy per tonne of water evaporated, capital cost, turndown, fouling tolerance and maintenance. The book gives the effect-count optimisation for MEE, the compressor duty calculation for MVR, and the boiling-point-elevation and scaling behaviour that decides tube material and cleaning interval for both.

Does the book cover salt recovery and disposal?

Yes. Crystalliser selection, ATFD operation, and the separation of sodium chloride from sodium sulphate are covered, including the nanofiltration split that makes saleable salt possible. Where recovery is not viable, the book covers classification of the residue, lined-landfill disposal requirements and the record-keeping that goes with it. The economics of salt sale against disposal cost are worked through.

How do I access this book after purchase?

eBook PDF: Instant download — a secure download link is delivered via email and your 3D-LABS account dashboard immediately after payment confirmation. No shipping wait. Lifetime access included — re-download anytime. Paper Book: Printed and shipped to your delivery address in India. Expect standard courier delivery timelines.

Contents

1. ZLD in India: CPCB Mandate and Applicable Industries — p. 1–21
2. Effluent Characterisation and Water Balance — p. 22–42
3. Pre-Treatment: Clarification, Softening and Filtration — p. 43–63
4. Ultrafiltration and Membrane Pre-Treatment — p. 64–84
5. Reverse Osmosis: Recovery, Scaling and Antiscalant — p. 85–106
6. High-Recovery Stages: DTRO and HPRO — p. 107–128
7. Multiple-Effect Evaporation Design — p. 129–150
8. Mechanical Vapour Recompression Systems — p. 151–172
9. Crystallisation, ATFD and Solids Handling — p. 173–194
10. Salt Separation, Recovery and Disposal — p. 195–216
11. Energy Consumption, Steam Balance and Operating Cost — p. 217–238
12. Instrumentation, OCEMS Compliance and Reference Tables — p. 239–260

What’s Included

An instant PDF download covering the core concepts, practical examples, and key references — ready to read on any device.

Related Reading

• Fluid Mechanics for Plant and Piping Engineers
• Heat Exchanger Design Playbook — Shell, Tube, Plate and Air-Cooled
• Applied Thermodynamics for Process and Power Engineers

Download the Zero Liquid Discharge (ZLD) Design e-book from 3D-LABS — instant PDF access with lifetime re-downloads.

About Zero Liquid Discharge (ZLD) Design

Zero Liquid Discharge (ZLD) Design is part of the 3D-LABS Engineering series — a focused e-book library for practising engineers, engineering students, and technical managers. This title covers fundamentals of engineering design, code interpretation, industry practices, and real-world project applications, with worked examples and industry-current best practices drawn from real engineering projects.

Written by practising 3D-LABS engineers and reviewed by senior specialists, Zero Liquid Discharge (ZLD) Design is designed to move you from concept to competence quickly — not to be a comprehensive academic reference, but a working reference you actually use.

Who Zero Liquid Discharge (ZLD) Design is for

Zero Liquid Discharge (ZLD) Design is written for practising engineers, engineering students, and technical managers. If you are:

• An early-career engineer wanting to accelerate your practical knowledge in engineering.
• An experienced practitioner looking for a compact reference on current practices.
• A student preparing for engineering exams, interviews, or your first professional role.
• A manager or team lead wanting to level-set your team on engineering fundamentals.

Then Zero Liquid Discharge (ZLD) Design will earn its price back in the first project or exam you apply it to.

What is included in your download

• The complete PDF e-book — DRM-free, fully searchable, print-friendly formatting.
• Worked examples — real-world calculations, drawings, or case studies interspersed through the text.
• Reference charts and tables — quick-lookup material you will return to on the job.
• Further reading recommendations — curated pointers to codes, standards, and complementary resources.
• Free updates — when we revise the book, you get the updated PDF at no extra cost. We notify you by email.

Pricing and delivery

Zero Liquid Discharge (ZLD) Design is priced at ₹5,400 (USD equivalent shown in cart). Delivery is instant — after payment, the download link is emailed to you and available in your account. No subscriptions, no hidden fees, no expiring access.

Payment methods: Cashfree (Indian customers) or PayPal International (customers outside India). Bulk licensing available for corporate training programmes and educational institutions — contact sales@3d-labs.com.

How to get the most out of Zero Liquid Discharge (ZLD) Design

1. Read the introduction and structure first — every book has a "how to use this book" section that maps chapters to the reader you are.
2. Work through the examples with pen and paper — passive reading is 10% retention; working the calculation yourself is 70%+.
3. Cross-reference with the 3D-LABS spreadsheet library — 686 Excel calculation tools that pair naturally with our e-books.
4. Apply the concepts to a real project immediately — the book will pay for itself the first time you avoid a design error.
5. Come back to the book after 6 months — with real project experience, you will read the same chapters differently.

Related titles and services

Readers of Zero Liquid Discharge (ZLD) Design typically also work with:

• Other titles in the Engineering book series — currently 20 titles.
• The Engineering Design Services — for projects where you need experienced engineering engineers directly.
• Our 686 engineering calculation spreadsheets — Excel tools that complement the theory in this book.
• Our online training courses — instructor-led programmes on engineering topics.

Frequently asked questions

What format is Zero Liquid Discharge (ZLD) Design delivered in?

Zero Liquid Discharge (ZLD) Design is delivered as an instant-download PDF file. The PDF is DRM-free, works on any device (desktop, tablet, phone, e-reader), and is fully searchable. Print-friendly formatting so you can print for offline reading.

How is this different from a paper textbook?

This e-book is a focused, practical guide — targeting a specific engineering skill or knowledge area. Unlike a 600-page academic textbook, it moves quickly to real-world applications with worked examples, industry practices, and current code references. Priced accordingly.

Who wrote this book?

Books in the Engineering series are authored by 3D-LABS engineers and reviewed by senior specialists in the field. Every author has hands-on industry experience — this is not academic theory, it is applied practice from working engineers.

Can I use the material for teaching or training?

Purchase includes single-user rights. For classroom use, corporate training programmes, or bulk licensing, contact us at info@3d-labs.com — we offer institutional licensing and custom-branded editions for training programmes.

What if the content does not meet my expectations?

We offer a 7-day satisfaction guarantee. If Zero Liquid Discharge (ZLD) Design does not deliver the value you expected, email us within 7 days of purchase for a full refund. No questions asked — we would rather have satisfied customers than unhappy ones.

About 3D-LABS engineering e-books

Zero Liquid Discharge (ZLD) Design is one of 115 titles in the 3D-LABS e-book library — the largest collection of practitioner-authored engineering e-books available anywhere, spanning 14+ series from engineering fundamentals to future technology and urban air mobility. Every book is written and reviewed by 3D-LABS engineers who use the concepts daily on real client projects across the globe.

Browse the full e-book library, or explore other content options: 686 spreadsheets, 19 online courses, or our full engineering services.