REVERSE OSMOSIS SYSTEMS RO 4... /E /EL - INSTRUCTIONS MANUAL
s.r.l.Milano - ITALY
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ro4e_mi-r10.doc -
r. 10
7.7. Table of chemicals for membranes cleaning
DETERGENTE / DETERGENT / CLEANER
TIPO DI SPORCO /
SALETE’ /
FOULANT
0.1 %
(w)
NaOH
0.1 %
(w)
Na-EDTA
pH 12, 30 °C MAX
0.1 %
(w)
NaOH
0.1 %
(w)
Na-DSS
pH 12, 30 °C MAX
1.0 %
(W
)
STP
1.0 %
(W
)
TSP
1.0 %
(W
)
Na-EDTA
0.5 %
(V)
HCl
0.5 %
(W
)
H
3
PO
4
2.0 %
(W
)
Acido citrico /
Acide Citrique / Citric Acid
0.2 %
(W
)
NH
2
SO
3
H
2.4 %
(W
)
Na
2
S
2
O
4
2.4 %
(W
)
Acido citrico /
Acide Citrique / Citric Acid
2.4 %
(W
)
NH
4
F-HF
pH 1.5-2.5, 30 °C MAX
Sali Inorganici /
Sels Inorganiques
Inorganic Salts
(per esempio / par exemple / for example:
CaCO
3
-
CaSO
4
-
BaSO
4
)
BEST
OK
OK
OK
OK
Ossidi Metallici / Oxjdes Métalliques /
Metal Oxides
(
per esempio / par exemple / for example:
Ferro - Fer - Iron)
GOOD
OK
GOOD
Inorganici Colloidali / Colloïdaux
Inorganiques / Inorganic Colloids
(silt)
GOOD
OK
Silice / Silice / Silica
OK
BEST
Biofilms
BEST
GOOD
GOOD
Organici / Organiques / Organics
OK
GOOD
GOOD
1
. (W) Peso percentuale. (V) Volume
percentuale. Cosí 2.0 % (W) acido citrico
significa : 2 grammi di acido citrico sciolto in
98 grammi d’acqua.
2.
Simboli chimici delle sostanze incrostanti,
nell’ordine: CaCO
3
=
carbonato di calcio.
CaSO
4
= solfato di calcio. BaSO
4
= solfato di
bario.
3.
Simboli chimici dei detergenti nell’ordine:
NaOH = idrossido di sodio. Na-EDTA =
sodio etilen-diammino-tetra-acetato Na-DDS
= sodio dodecilsulfato. STP = sodio trifosfato
(Na
5
P
3
O
10
). TSP = fosfato trisodico (Na
3
PO
4
-
12H
2
O). HCl = acido cloridrico. H
3
PO
4
=
acido fosforico. NH
2
SO
3
H = acido
sulfammico. Na
2
S
2
O
4
= sodio idrosolfito.
NH
4
F- HF = ammonio bifluoruro.
1.
(W) pourcentage poids . (V) pourcentage
volume. Aussi 2.0 % (W) signifie : 2 grammes
d’acide citrique dissout en 98 grammes d’eau.
2.
Symboles chimiques des substances
incrustantes, en ordre : CaCO
3
= carbonate de
calcium. CaSO
4
= sulfate de calcium. BaSO
4
=
sulfate de baryum.
3.
Symboles chimiques des détergents utilisés,
en ordre: NaOH = hydroxyde de sodium. Na-
EDTA sel sodium de acide tetracétique de
diéthylamine . Na-DDS = sels de sodium
dodecylsulfate. STP = sodium triphosphate
(Na
5
P
3
O
10
). TSP = trisodium phosphate
(Na
3
PO
4
-
12H
2
O).
HCl = acide hydrochlorique. H
3
PO
4
=
acide
phosphorique. NH
2
SO
3
H = acide sulfamique.
Na
2
S
2
O
4
= sodium hydrosolfite. NH
4
F- HF =
ammonium bifluorure.
1.
(W) denotes weight percent. (V) denotes
volume percent. So 2.0 % (W) citric acid
means 2 grams of citric acid dissolved in 98
grams of water.
2.
Foulant chemical symbols in order used :
CaCO
3
= calcium carbonate. CaSO
4
=
calcium sulfate. BaSO
4
= barium sulfate.
3.
Cleaning
chemical symbols, in order used:
NaOH = sodium hydroxyde. Na-EDTA
sodium salt of ethylene diamine tetraacetic
acid. Na-DDS = sodium salt of
dodecylsulfate. STP = sodium triphosphate
(Na
5
P
3
O
10
). TSP = trisodium phosphate
(Na
3
PO
4
-
12H
2
O).
HCl = hydrochloric acid. H
3
PO
4
=
phosphoric
acid. NH
2
SO
3
H = sulfamic acid. Na
2
S
2
O
4
=
sodium hydrosulfite. NH
4
F- HF = ammonium
bifluoride
