MemEOL

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Introduction text

Do you suspect there is any physical damage to the membranes that would prevent them from being reused?

What is the tested permeability of your membranes (LMH/bar)?

What is the tested NaCl rejection of your membranes? (% NaCl rejection)

Please order the following criteria in the order of importance for your project (drag and drop):

  • Financial
  • Effort required
  • Environmental impact
  • Landfill impact
  • Public perception
Rank from most important to least important.

Based on your inputs, the optimum end-of-life scenario for your used membrane is:

NaCl rejection range (%) Permeability range (l.m-2.h-1.bar-1) Designation Action Estimated reuse lifespan (yrs)
99.9 - 99.6 > 0.45 High quality SWRO Direct reuse as SWRO possible in normal applications 2 –5
99.7 - 99.2 > 1.6 High quality BWRO Direct reuse as BWRO possible in normal applications 2 – 3
99.2 – 98 > 1.6 Medium quality BWRO Direct reuse as BWRO in standard applications possible 1 – 2
98 – 96 > 1 Low quality BWRO Direct reuse as BWRO in harsh applications where regular replacement is required 1
96 – 80 > 5 Medium quality NF Direct reuse as NF membrane possible -
< 96 < 5 Unsuitable for RO or NF Membrane suitable for UF conversion. -

A suitable alternative is:
NaCl rejection range (%) Permeability range (l.m-2.h-1.bar-1) Designation Action Estimated reuse lifespan (yrs)
99.9 - 99.6 > 0.45 High quality SWRO Direct reuse as SWRO possible in normal applications 2 –5
99.7 - 99.2 > 1.6 High quality BWRO Direct reuse as BWRO possible in normal applications 2 – 3
99.2 – 98 > 1.6 Medium quality BWRO Direct reuse as BWRO in standard applications possible 1 – 2
98 – 96 > 1 Low quality BWRO Direct reuse as BWRO in harsh applications where regular replacement is required 1
96 – 80 > 5 Medium quality NF Direct reuse as NF membrane possible -
< 96 < 5 Unsuitable for RO or NF Membrane suitable for UF conversion. -