From zero to hero – the rise of ZLD

Regulatory drivers are ensuring that zero liquid discharge is gaining in popularity. Capital and operating costs can still prove prohibitive, as Gord Cope discovers.

If there was ever a Holy Grail of water recovery and reuse in an industrial plant, then it is undoubtedly zero liquid discharge, or ZLD. While it may be difficult and expensive to achieve, zero liquid discharge is easy to define.

“A ZLD system means that no liquid waste leaves the boundary of the facility,” says Keith Minnich, Veolia’s vice president of water solutions and...

Subscribe online today

  • Monthly print magazine
  • Unlimited online access
  • Project Tracker Database
  • Access to the GWI Archive
  • Annual Tariff Survey
  • 10 online users per office location.
  • Annual Subscription: £995.0 / $1695.0

Free 2 week trial

  • 1 Trial copy of GWI Magazine
  • Online access to
  • Weekly news and insight from GWI Briefing