Feature 3
Parameters Unit of IMO MEPC 2(VI) IMO MEPC 159(55)
margin, limiting suspended solids to
measurement standard standard
3.1mg/l, reducing faecal coliform to 10.6
T_h ermotolerant MPN per 100ml <250 (geom mean) <100 (geom mean) units per 100m/l, and cutting biochemical
coliform oxygen demand to 2.6mg/l. Both residual
Total suspended
chlorine levels and pH (alkalinity or
solids:
acidity) are also within limits def_i ned for
Alaskan waters.
Land test mg/litre <50 (geom mean) <35 (geom mean)
MBR systems are based on modules in
Onboard test mg/litre <100* (geom mean) <35* (geom mean)
which hollow, composite membrane tubes
BOD(5)(f_i ve-day mg/litre <50 (geom mean) <25 (geom mean) are housed in a f_i bre-reinforced casing. T_h e
biochemical oxygen biomass feed passing through the modules
demand) is processed into clean water using the
COD(chemical mg/litre not specif_i ed <125 (geom mean)
cross f_l ow, ultra-f_i ltration principle. Solids
oxygen demand)
build-up is thereby reduced and the need
for backwashing eliminated.
pH pH not specif_i ed 6 to 8.5
It is clear that the prospect of both tougher
and wider-reaching regulatory standards,
Residual chlorine mg/litre as low as possible b est te chnic a l
including new controls envisaged for the
practice, <0.5
Baltic and also Alaska, will drive further
Effl uent Quality Standards shown in tabular form.
product development. SBI
This is the part
that saves you,
money.

Design Build Repair & Refit
Almost a Century of Experience. for the future
unique ships with quality & efficiency
Astilleros Zamakona, S.A. Astilleros Zamakona Pasaia, S.L. Repnaval
Santurce - Bilbao - Spain Pasaia-San Sebastián - Spain Las Palmas de Gran Canarias - Spain
t: (+34) 944 937 030 t: (+34) 944 937 030 t: (+34) 928 466 168
zamakona@zamakona.com
zamakona@zamakona.com
repnaval@repnaval.com
www.astilleroszamakona.com www.astilleroszamakona.com www.repnaval.com
SBI_MarApr10_p36-37.indd 371/2 Page general.indd 1 01/03/2010 10:34:5418/7/08 10:35:24
Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60