Results of lab test NG RO: Bypass, UV-lamp, membrane Toray 3012 800-1000 GPD

1. Results of lab test NG RO: Bypass, UV-lamp, membrane Toray 3012 800-1000 GPD

Bekkereva Yulia
09.06.2018

2.

Systems & Cartridges composition
NG RO:
• 1 Stage - ¼ PP 5 mkm Sediment filter, non-washed GAC IndoCarb WT E408
(40x80) – 450 ml
• 2 Stage – RO membrane element 3012 Toray
• 3 Stage – Ca-block – 196 ml, clack Corosex (6x16) mesh – 37 ml, Ftorator-F – 11
ml, GAC CarboTech DGK 18x40/55 Ag(010) – 15 ml, acid washed activated
carbon 18x40 – 130 ml, RO water – 25 ml

3.

Results of lab test NG RO
Parameters of model solution:
Parameter
Date
Municipal water (Moscow)
Temperature, °C:
20±5
pH level
7.5±0.5
TDS, mg/L:
200-400
Turbidity, NTU:
≤1.0
Total hardness (as CaCO3), mg/L:
200-250
RO water
UV-lamp
Solenoid
Bypass
time
control
microorganisms
solution
Mineralizer
Pic.2 Stand for testing NG RO (bypass)
Solenoid
Drainage
Pic.1 Stand for testing NG RO (UV-lamp)
Parameter
Requirements
Total microbial number
˂100 KOE/ml
Magnesium
≤25 mg/L
Calcium
≤60 mg/L
Fluorine
≤1 mg/L

4.

Results of lab test NG RO (UV-lamp): Total microbial number
Sampling point
Total microbial
number,
KOE/ml
Testing details
RO water
0
-
Microorganisms solution
1785
-
1st stage testing (downtime – 24 hours)
After solenoid
1
After UV-lamp
1
Operating time UV lamp –
30 sec
2nd stage testing (downtime – 48 hours)
RO water
308
After solenoid
1219
After UV-lamp
255
Operating time UV lamp –
30 sec
3d stage testing (downtime – 96 hours)
RO water
211
Microorganisms solution
1873
After solenoid
485
After UV-lamp
73
Operating time UV lamp –
2 min
Conclusions: The samples were
contaminated with
microorganisms at the second
stage of testing. After increasing
the operating time of UV lamps,
the concentration of
microorganisms in the sample
after UV lamp decreased by 3.5
times. The system is under
revision.

5.

Results of lab test NG RO (bypass): 1st stage
Bypass
operation
time
Sampling
point, L
TDS, mg/L
pH
Total hardness
Ca, mg/L Mg, mg/L
(as CaCO3), mg/L
0,5
231
8,0
180
36
1,5
121
7,2
95
0,5
212
7,8
175
F-, mg/L
Testing details
22
0,4
19
11
˂0,05
The mineralizer
was washed before
testing begins
37
20
0,3
0 sec
5 sec
Time-out for 1 hour
1,5
142
7,2
110
22
13
0,2
0,5
280
9,2
250
55
27
0,5
10 sec
Time-out for night
1,5
150
7,5
120
25
14
0,2
0,5
217
8,9
190
38
23
0,4
1,5
124
7,4
100
20
12
0,2
15 sec
Time-out for 1 hour
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.

6.

Results of lab test NG RO (bypass): 1st stage
Bypass
operation
time
10 sec
20 sec
30 sec
Sampling
point, L
Testing details: removed flow limiter
Total hardness
TDS, mg/L
pH
(as CaCO3),
Ca, mg/L Mg, mg/L F-, mg/L Testing details
mg/L
0,5
283
8,5
240
53
26
0,6
1,5
119
6,8
93,5
20
11
0,2
0,5
193
7,5
160
32
19
0,4
1,5
102
6,7
83,5
16
10
0,2
0,5
201
7,5
175
36
21
0,4
1,5
109
6,8
84
18
10
0,2
Time-out for
night
Time-out for 1
hour
Time-out for 1
hour
Testing details: repeated test
Bypass
operation
time
10 sec
20 sec
30 sec
pH
Total hardness
(as CaCO3),
mg/L
Ca, mg/L
356
9,0
265
64
25
1,1
1,5
167
6,9
120
24
15
0,4
0,5
249
7,7
180
32
24
0,7
1,5
123
6,5
85
14
13
0,3
0,5
250
7,5
195
30
25
0,7
1,5
139
6,7
110
19
15
0,2
Sampling
point, L
TDS, mg/L
0,5
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.
Mg, mg/L F-, mg/L Testing details
Time-out for
48 hours
Time-out for 1
hour
Time-out for 1
hour

7.

Results of lab test NG RO (bypass): 2nd stage
Sampling cycle:
1. Select 0.25 L;
2. Spill the system;
3. Time-out for 1,5 hours;
4. Select 0.25 L;
5. Time-out for 1,5 hours;
6. Select 1 L;
7. Time-out for 1,5 hours;
8. Select 0.25 L;
9. Time-out for 1,5 hours;
10. Select 1 L.
Testing details: Bypass operation time - 20 sec
Sampling
point, L
0,25
0,50
1,50
1,75
2,75
Sampling
point, L
0,25
0,50
1,50
1,75
2,75
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.
TDS, mg/L
361
288
278
273
284
TDS, mg/L
333
274
264
266
287
Sampling
point, L
0,25
TDS,
mg/L
362
0,50
1,50
1,75
2,75
289
249
285
246
Total hardness (as
Ca, mg/L Mg, mg/L F-, mg/L
CaCO3), mg/L
9,0
285
32
50
1,2
Shedding 2 liters of water through a system
8,3
220
27
37
1,0
7,5
200
38
26
0,6
7,4
200
27
32
0,8
7,2
190
39
23
0,6
pH
Testing details: Bypass operation time - 10 sec
Total hardness
Mg,
pH
Ca, mg/L
F-, mg/L
(as CaCO3), mg/L
mg/L
7,9
240
38
35
1,1
Shedding 2 liters of water through a system
7,6
200
30
30
0,9
7,4
185
38
22
0,6
7,3
190
30
28
0,8
7,2
190
43
20
0,6
Testing details:Bypass operation time - 30 sec
Total hardness
Mg,
pH
Ca, mg/L
F-, mg/L
(as CaCO3), mg/L
mg/L
7,7
255
47
33
1,0
Shedding 2 liters of water through a system
7,4
210
34
30
0,8
7,0
170
36
19
0,5
7,2
200
36
27
0,7
6,9
170
38
18
0,5
Testing details
Time-out for 48 hours
Time-out for 1,5 hours
Time-out for 1,5 hours
Time-out for 1,5 hours
Time-out for 1,5 hours
Testing details
Time-out for night
Time-out for 1,5 hours
Time-out for 1,5 hours
Time-out for 1,5 hours
Time-out for 1,5 hours
Testing details
Time-out for night
Time-out for 1,5 hours
Time-out for 1,5 hours
Time-out for 1,5 hours
Time-out for 1,5 hours

8.

Results of lab test NG RO (bypass 3/8”)
Sampling cycle:
1. Spill the system;
2. Time-out for 1,5 hours;
3. Set the bypass operation time for 5 sec.
4. Select 0,2 L;
5. Select 1,0 L;
6. Time-out for 1,5 hours;
7. Set the bypass operation time for 10 sec.
8. Select 0,2 L;
9. Select 1,0 L;
10. Time-out for 1,5 hours; 11. Set the bypass operation time for 20 sec.
12. Select 0,2 L;
13. Select 1,0 L;
14. Time-out for 1,5 hours;
15. Set the bypass operation time for 30 sec.
16. Select 0,2 L;
17. Select 1,0 L;
18. Time-out for 1,5 hours.
After each series of experiments, the bypass element is replaced.
Stages of the experiment :
1st stage - The bypass line with a 3/8“ pipe and a solenoid with 3/8" connection rails
2nd stage - The bypass line with a 1/4“ pipe and a solenoid with 3/8" connection rails
3d stage - The bypass line with a 1/4“ pipe, a solenoid with 3/8" connection rails and a flow limiter for 800 ml
4d stage - The bypass line with a 3/8“ pipe and a solenoid with 1/4" connection rails

9.

Results of lab test NG RO (bypass 3/8”): 1st stage
Testing details: Before the start of the test there was a timeout within 48 hours.
The bypass line consists of a 3/8“ pipe and a solenoid with 3/8" connection rails.
Bypass
Sampling
Total hardness
operation
TDS, mg/L
Ca, mg/L Mg, mg/L F-, mg/L
point, L
(as CaCO3), mg/L
time
Testing details
Shedding 2 liters of water through a system
0,2
195
5 sec
165
30
22
0,6
1,0
240
0,2
206
151
23
23
0,7
1,0
243
163
34
19
0,6
0,2
198
209
36
29
0,8
1,0
183
132
26
16
0,4
0,2
202
139
23
20
0,7
1,0
215
146
32
16
0,5
10 sec
20 sec
30 sec
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours

10.

Results of lab test NG RO (bypass 3/8”): 2nd stage
Testing details: Before the start of the test there was a timeout within night.
The bypass line consists of a 1/4“ pipe and a solenoid with 3/8" connection rails.
Bypass
Sampling
operatio
TDS, mg/L
point, L
n time
Total hardness
(as CaCO3),
mg/L
pH
Ca, mg/L
Mg,
mg/L
F-, mg/L Testing details
Shedding 2 liters of water through a system
0,2
204
140
7,3
22
20
0,5
1,0
245
170
7,4
36
19
0,5
0,2
209
145
7,3
24
21
0,5
1,0
247
170
7,0
37
19
0,5
0,2
219
150
7,3
25
21
0,6
1,0
226
150
6,8
37
14
0,4
0,2
212
150
7,2
24
22
0,6
1,0
216
145
6,8
34
15
0,4
5 sec
10 sec
20 sec
30 sec
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours

11.

Results of lab test NG RO (bypass 3/8”): 3d stage
Testing details: Before the start of the test there was a timeout within night.
The bypass line consists of a 1/4“ pipe, a solenoid with 3/8" connection rails and a flow
limiter for 800 ml.
Bypass
Sampling
operatio
TDS, mg/L
point, L
n time
Total hardness
(as CaCO3),
mg/L
pH
Ca, mg/L
Mg,
mg/L
F-, mg/L Testing details
Shedding 2 liters of water through a system
0,2
318
250
8,9
34
40
1,2
1,0
212
135
7,0
34
12
0,3
0,2
292
240
8,8
33
38
1,2
1,0
236
155
7,1
37
15
0,4
0,2
273
235
8,7
29
40
1,1
1,0
240
160
7,1
38
16
0,4
0,2
316
250
8,7
42
35
1,1
1,0
211
145
6,9
38
12
0,3
5 sec
10 sec
20 sec
30 sec
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours

12.

Results of lab test NG RO (bypass 1/4”): 4d stage
Testing details: Before the start of the test there was a timeout within night.
The bypass line consists of a 3/8“ pipe, a solenoid with 1/4".
Bypass
operation
time
Sampling
point, L
TDS, mg/L
Total hardness (as
CaCO3), mg/L
pH
Ca, mg/L Mg, mg/L F-, mg/L
Testing details
Shedding 2 liters of water through a system
0,2
195
120
6,9
21
17
0,7
1,0
304
200
7,0
42
23
0,9
0,2
287
180
7,2
35
23
1,0
1,0
247
150
6,8
37
14
0,6
0,2
232
140
7,1
28
17
0,8
1,0
246
155
6,7
36
16
0,7
10 sec
20 sec
30 sec
Note: red text means that result
does not comply with
requirements on the
correspondent parameter.
Time-out for 1,5
hours
Time-out for 1,5
hours
Time-out for 1,5
hours

13.

Results of lab test NG RO (bypass 1/4”): 4d stage (Checking the stability of the bypass
operation)
Sampling cycle:
1. Set the bypass operation time for 20 sec.
2. Select 0,2 L;
3. Select 1,0 L;
4. Spill the system;
5. Time-out for 1,5 hours;
6. Select 0,2 L;
7. Select 1,0 L;
8. Time-out for 1,5 hours;
9. Select 0,2 L;
10. Select 1,0 L;
11. Time-out for 1,5 hours;
12. Select 0,2 L;
13. Select 1,0 L;
14. Time-out for 1,5 hours.
15. Select 0,2 L;
16. Select 1,0 L.

14.

Results of lab test NG RO (bypass 1/4”): 4d stage (Checking the stability of the bypass
operation)
Testing details: Before the start of the test there was a timeout within one week.
The bypass line consists of a 3/8“ pipe, a solenoid with 1/4“, Bypass operation time – 20 sec
Sampling point, L
TDS, mg/L
Total hardness
(as CaCO3),
mg/L
pH
Ca, mg/L
Mg, mg/L
F-, mg/L
Testing details
0,2
318
205
7,3
38
27
1,0
-
1,0
425
295
7,6
31
53
1,1
-
Time-out for
1,5 hours
Shedding 2 liters of water through a system
1,2
257
170
7,2
28
24
0,9
2,0
252
160
7,1
37
12
0,7
2,2
232
145
7,1
16
26
0,6
3,0
257
175
7,0
39
19
0,8
3,2
239
150
7,0
32
17
0,7
4,0
257
165
7,0
40
16
0,7
4,2
240
145
6,9
31
16
0,6
5,0
253
160
6,9
39
15
0,6
Time-out for
1,5 hours
Time-out for
1,5 hours
Time-out for
1,5 hours

15. Conclusions

After a series of experiments, the following bypass option was chosen:
-
The bypass line consists of a 3/8“ pipe, a solenoid with 1/4“,
-
Bypass operation time – 20 sec.

16. Results of lab test NG RO (membrane Toray 3012 800-1000 GPD)

• The flow rate through the membrane (without the
mineralizer) is 2.3-2.5 L/min;
• TDS of the filtrate is 50-35 ppm.
Conclusions: This membrane is not suitable for NG RO.