TEXTE Environmental Impacts of Exhaust Gas Cleaning Systems for Reduction of SOx on Ships — Analysis of status quo 
zeport compiled within the framework of the project ImpEx 
Table A-4: Results of research studies on chemical composition of EGCS discharge water 
Parameter 
/BSH[5] | VL [1] ceL [53] | 
Open loop 
CESA NORW DTU [1] COWI [1] 
[20] 17 
Closed loop 
ı BSH [3] IVL [2] CESA [4] COWI [1] 
General parameters 
Turbidity (NTU) 
SS (mg/L) 
pH 
Alkalinity (mmol/L) 
| 45-17.2 
0.8—3.2 
2.8-5.5 
0.0-1.4 
2.5 
NA 
NA 
NA 
NA 
NA 
NA 
NA 
NA 
NA 
NA 
NA 
1.7 
NA 
3.2 
NA 
\JA 
NA 
3 
NA 
NA 
10-15 3.5-125 
3.7-58 149-711 
NA 0.0-0.0 
| 4.6 —39.4 
9.3— 12.9 
NA 
6.9-7.6 
6.0 
NA 
NA 
NA 
NA 
| NA 
25-39 
6.5-7.0 
NA 
Nitrogen and sulphur 
Nitrate (mg/L) 0.1—-1.7 
Nitrite (mg/L) <0o.2-1.3 
Sulphur (g/L) 0.16 —- 0.8 
Organic pollutants 
Oil content | 0.1 -— 0.3 
(mg/L) 
PAHeraıs (Hg/L) 
NAP (u8/L) 
PHE (H8/L) 
B[a]P (ug/L) 
1.6—14 
0.6 —9.5 
0.7-2.9 
<0.012 — 
0.1 
0.80% 
<LODY 
1.2 
0.39vi) 
13.5 
7.5 
VA 
0.017 
NA 
NA 
NA 
NA 
6.7% 
2.4 
1.9 
0.066 
<0.5— 22.3 
<0.02 —- 0.1 
NA 
NA 
0.5—24 
0.02 — 14 
0.08 — 6.1 
<0.01 — 
0.55 
<0.033 
<10 
NA 
0) 20% 
34 
1.85 
1.00 
0.01 
NA 
NA 
NA 
NA 
VA 
A 
A 
NA 
NAVY 
NA 
0.87 -—-0.90 
0.11- 
33 
0.96 — 1.8 
0.48 — 0.57 
NA 
<0.01 
| 24-290 
6.3—-351 
8.2 —- 21.7 
5.3- 11.4 
11.83 —- 54.4 
0.1—3.9 
2.4 — 20.1 
0.06 - 0.4 
<4,4 — 80% 
161% 
19.0—22.0 
2.0-7.1% 
16-—21.9 
4.4 — 4.8 
10.0 
0.014 — 
<0.1 
90.4 — 194 
<0.02 
NA 
NA 
0.8 —12.6 
0.06 — 5.7 
0.545 
<0.01 
NAVY 
NA 
48-90 
11-21 
3.8 —24 
0.32 — 0.49 
NA 
<0.01 
Heavv metals 
5659