1 1 years without any maintenance TDR relies on efficient Danfoss APP pumps for profitability at ZLD wastewater treatment facility Case story | TDR 90% efficiency at all operation points China’s zero liquid discharge legislation (ZLD) is driving increased use of RO technology to treat industrial wastewater. For although ZLD eliminates contamination from factory effluents into groundwater and waterways, ZLD comes at a high energy cost which RO treatment prior to brine concentration and crystallization reduces substantially. Danfoss APP pumps are increasingly in demand to make such ZLD projects as energy-efficient – and profitable – as possible. The challenge: Treat 12,000 m3/d of biochemical wastewater with zero liquid discharge as efficiently as possible Beijing Tiandi

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