Basic HTML Version
MERC ER02-10
6
after the addition sodium bisulfate. Note an attempt at using sodium thiosulfate on discharge
was not effective, resulting in a final chlorine level of 0.21 ppm.
Mechanical Failures -
SIE-10-02-T0 (15 April 2010)
The filtration unit on the
SiCURE
TM
system failed prior to the first sampling mesocosm being completely filled. The unit
clogged, causing a complete stoppage of flow. Trial
SIE-10-02-T0
was therefore canceled.
SIE-10-06-T0 (20 May 2010) The
SiCURE
TM
system experienced a malfunction during startup
but prior to the filling
of the treated tank and sampling mesocosms. Once the issue was resolved,
testing was re-initiated. In all trials, 10-15 minutes of water flow through the system was
provided before electrochlorination was initiated. This flow was diverted into the a separated
ballast tanks and not into the treated test tank.
* Complete datasets and further performance information is available upon request.
6.0 Results
6.1. Trial 1 (SIE-03-10): 22-27 April 2010
Presented as means and standard deviations.
Physical Parameters
TSS
mg/l
DOC
mg/l
PC
mg/l
T0 Ambient
23.9 (3.7)
2.82 (0.01)
3.44 (0.03)
T0 Enhanced
51.3 (2.4)
NA
5.61 (0.61)
Enhanced data is the average of 3 time points (2 reps per time point) during the fill time of the ballast tanks.
Ambient water is sampled at the beginning of the trial and before the water is enhanced.
Temp
o
C
Salinity
psu
Dis. Oxygen
mg/l
Turbidity
NTU
pH
T-0 Control
14.28 (0.03)
5.97 (0.00)
11.89 (0.03)
17.39 (1.10)
8.5 (0.1)
T-0 Treated
14.36 (0.02)
6.64 (0.00)
16.24 (0.09)
18.46 (1.21)
8.6 (0.1)
T-F Control
14.14 (0.01)
5.95 (0.01)
8.37 (0.02)
3.67 (0.19)
7.8 (0.1)
T-F Treated
14.18 (0.01)
6.61 (0.01)
10.93 (0.01)
6.56 (0.09)
8.0 (0.1)
Live Organisms > 50
µ
m
T0
#/m
3
TF
#/m
3
Control
124,000 (5,000)
*223,667 (29,501)
Treated
4.5 (7)
5 (4.5)
*Note large increase between T0 and TF in Control tank (reproduction and hatching of eggs).
*TF Control
*TF Treated
Copepod nauplii
Copepoda
Calanoida (
Acartia sp.
)
Rotifera
Cirripedia nauplii
Harpacticoida
* Up to four top taxa listed in order of abundance.