Page 306 - Membranes for Industrial Wastewater Recovery and Re-Use

Table 5.208 Operation and cleaning
Parameter Application
Power Power Power Pulp+ MDF Pulp+ Textile Food Food Automotive
paper paper
Name of Flag Fen (MF) Flag Fen (KO) Eraring Apeldoorn Chirk Kirk n i e rn i South Kanagawa Passchendaele Germany
installation Wigston Prefecture
Plant capacity 1500 1200 3750 216 400 5184 480 140 685 192
(m3 d-l)
Temperature ("C) 16 16 60 25-30 5 5-60 60 14-2 2 40
Flux range (LMH) 24-37 35-41 100-120 - 2 50-500 - 40-45 145-300
Mean flux (LMH) 30.5 34.5 22 120 15 300 16.5 42
TMP range (bar) 0.4-3 (1-16 15-35 - - - - 0.3-0.6 1-3
Mean TMP (bar) 1.3 9.5 25 3.5 3 0 0.8 25 0.4 -
BacMush duration 1.5 - n.a. - - n.a. - n.a 0.8
(min)
Backflush 12 - n.a. n.a n.a 15
frequency (min)
Backflush fluid Air/water - n.a n.a. Water -
Cleaning cycle 90 360 - Overnight - 300
duration (min)
Cleaning frequency 14 days hmonths - - 1 day. 3 days 5 days 4 6 months Variable 34 months
h day-'
Cleaning chemicals Hypochlorite+ High + low Anionic/ionic Caustic soda, Alkaline and acid - Sodium HCI + NaOCl Organic acid+
high pH PH surfactants proprietary detergent for hypochlorite+ solvent. NaOClt
high-pH reagent membrane cleaning NaOH membrane
conditioner
Flow per module 1.69 0.5 1.42 -
(m3 h-')
Cross-flow velocity 4.5 - 13 -
(m s-')
Membrane 7 3 - 3 1.5 1.5 2 >3
replacement (years)

N
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w