EPA Export 26-07-2013:00:21:51
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MEMBRANE EFFICIENCY OVER TIME
Parameter Year 1998 1999 Efficiency Average(%) 97.5 97.0 2000 2001 2002 2003 2004 2005 2006 95.3 94.5 93.0 92.6 94.5 96.6 91.8 2007 2008 91.4 Co
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Process Description Micro‐Bio operates a membrane‐cell electrolysis plant in which Sodium Chloride Brine (salt water) is electrolysed to produce the Chlor‐Alkali products Hydrochloric Acid, Sodium Hydroxide Solution and Sodium Hypochlorite Solution. Membrane‐cell technology is acknowledged to be the most environmentally friendly method of production for these products and is the Best Available Technology for Chlor‐Alkali production. At the heart of the process is the cell membrane which is like a sheet of strong plastic and is susceptible to damage from different sources including mechanical damage due to vibration and chemical damage due to impurities (mainly from the brine). The membrane has a direct impact on plant efficiency, which in turn has a direct impact on Chloride (TDS) emissions. Consequently prolonged membrane life and high efficiency requires very stable production with minimal interruptions (e.g. shut‐downs) and high quality brine (even Calcium or Magnesium in the order of 0.1‐0.2 ppm in the brine can result in a drop in efficiency very quickly to the 90‐92% range). Membrane Efficiency The ion exchange membranes have an initial efficiency in the region of 96‐98%. With a practical life of 4‐5 years, an end‐of‐life efficiency of 90‐92% can be expected. However, excursions in brine quality or operational problems can lead to a faster than expected rate of reduction in efficiency. Inefficiency results in the formation of Sodium Chlorate in the electrolysis cells and as membrane efficiency reduces the production of Sodium Chlorate increases. The table reflects operating efficiencies over the period 1998‐2007. As can be seen efficiency initially is very high and over the life of the membrane drops to about 91% when it becomes economically viable to begin re‐membraning, e.g. the period 1999 to 2004 when efficiency dropped from 97.0% in 1999 to 90.8% in 2004 just before re‐membraning began. Again in 2005 efficiency was back up to 96.6%, however, this level was not maintained as some operational problems were encountered in 2006 that impacted on the cell efficiency resulting in a drop to 92%. In 2008 re‐membraning re‐commenced. TABLE 1 YEARLY PERFORMANCE COMPARISON Comments/History
New membrane‐cell plant installed May 1998 First full year with new cells/membranes. All membranes changed out as part of an upgrade provided by the technology supplier. Decomposer installed Sept 2003 New Membranes installed 2004 Brine quality excursion/process problem causing damage to membranes Re‐membraning started in March 2008 Tables E.2(i), E.2(ii), E.3(i), E.3(ii) have been completed at 3 efficiencies reflecting emissions during the life of a membrane. EPA Export 26-07-2013:00:21:51
EFFECT OF EMISSIONS FOLLOWING THE INSTALLATION OF THE CHLORATE DESTRUCTION UNIT Co
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Brine Loop Description (see attached Electrolysis Process Brine Loop Diagram). Salt is the main raw material for the process and is added to the saturator where demineralised water and recycled brine (from the Electrolysis cells) are used to dissolve the salt to produce a saturated brine solution (~300 gpl NaCl). The saturated Brine solution is pumped through brine softening resins to Purified Brine Storage from where it flows to the electrolysis cells. During electrolysis the Sodium Chloride concentration is reduced from 300 gpl to ~220 gpl NaCl. The 220 gpl Spent Brine undergoes some treatment/recovery operations prior to recycling back to the saturator for re‐use. New membrane‐cells have a typical efficiency of 96‐98%. Inefficiency results in the production in the cells of Sodium Chlorate (NaClO3). The Sodium Chlorate remains in the Spent Brine stream and is returned to the saturator for re‐use, thereby left unchecked, it would build‐up in the Brine Loop. For example in the Feed Brine to the cells you may have 5 gpl Sodium Chlorate, after electrolysis and depending on the membrane efficiency there will be a pick‐up of 3‐10 gpl Sodium Chlorate so the Spent Brine solution will contain 8‐15 gpl Sodium Chlorate. Two methods are employed to control the Sodium Chlorate level in the recirculated brine: 1.
Purging: By purging Spent Brine to drain you are removing Sodium Chlorate from the system. This means however, that you purge a lot of Sodium Chloride also and this results in high Chloride/TDS levels in the effluent stream from the site. The lower the membrane efficiency the greater the purge rate required as more Sodium Chlorate is produced during electrolysis. Approximate purge rates are shown in Table 1. 2.
Chlorate Destruction: In order to reduce the quantity of Sodium Chloride purged it was decided to install a Chlorate Decomposition Unit. A sidestream of Spent Brine is fed continuously to the decomposition unit where it is heated to 95‐100oC and reacted with Hydrochloric Acid to convert the Sodium Chlorate back to Chlorine Gas and Sodium Chloride according to the reaction: 3Cl2 + NaCl + 3H2O NaClO3 + 6HCl The reaction requires an excess of Hydrochloric Acid (30 gpl HCL excess) and a reaction time of about 1 hour. The treated stream is returned continuously to the Spent Brine collection tank for recycling. The operation of the decomposition unit allows for a significant reduction in the purge rate as can be seen from the table below. The reaction uses a large amount of Hydrochloric Acid so there are economic constraints on the amount of Decomposition that can be performed. Also as there is also a build‐up of Sodium Sulphate in the Brine loop there remains a need to purge (at a much lower rate) to control levels of Sodium Sulphate. Technologies are reviewed regularly so that the company can be aware of any new developments which may allow further reductions in purge rates. TABLE 1 APPROXIMATE PURGE RATES (With and without Chlorate Decomposition) Parameter/Efficiency Unit 97% 94% 91% * Sodium Chlorate pick‐up during electrolysis gpl 3 5 6 * Purge Rate lphr 300‐500 600‐800 1100‐1300 Chloride Discharges to Treatment Plant mt/yr 350‐590 700‐940 1290‐1520 * Purge Rate with Chlorate Decomposition lphr 150‐250 300‐400 600‐700 Chloride Discharges to Treatment Plant mt/yr 180‐290 350‐470 700‐820 *Level of Operation 4 KA/m2; 68 cells From Table 1 it can be seen that membrane efficiency has a direct effect on the purge rate as more Sodium Chlorate is produced as efficiency decreases. Also the operation of the Chlorate Decomposition system brings about a reduction in the purge rate which in turn results in a significant reduction in Chloride/TDS discharges. EPA Export 26-07-2013:00:21:51
Table 2 shows the totall Chloride/TDS Discharges from the site over the period 1998‐2007. The discharge is inclusive of Chloride/TDS from other sources on the site, e.g. neutralisation of waste regenerant Hydrochloric Acid from regeneration of Brine Softening Resins and Demineralised Water and Water Softening Plants. The company estimates that these sources contribute approximately 100 mt/year Chloride/170 mt/year TDS to the Total Discharge. Also the table does not reflect changes in plant capacity (the number of cells in operation was increased in 2006 from 61 to 68) or levels of operation which have increased over the years. In September 2003 the Chlorate Destruction unit was installed. This resulted in a significant reduction in Chloride/TDS discharges for 2004. In 2005 the reduction was maintained even though production increased. In 2006 there were operational problems which resulted in a reduction in efficiency, additional cells were installed and the level of operation also increased, however, there was also a significant increase in Chloride/TDS discharges. The effect of the Chlorate Decomposition unit can be gauged from the potential discharges as shown in Table 1 where without the unit these would have been in the region of 1300‐1500 mt/year Chloride and with the unit in operation were actually 746 mt in 2006 and 820 mt in 2007 indicating the effectiveness of the unit. The company expects a significant drop in Chloride/TDS discharges over the next few years with the installation of new membranes in 2008. Table 2 ACTUAL CHLORIDE/TDS DISCHARGES (With and without Chlorate Decomposition) 97.5 97.0 95.3 94.5 93.0 92.6 94.5 96.6 91.8 91.4 439 540 559 634 809 771 394 435 746 820 728 1027 998 1090 1428 1343 709 775 1302 1423 New Membrane Plant installed. 6 week installation period.
.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 Comments se
TDS (mt) ru
(mt) he
Chloride ot
Efficiency Average (%) Chlorate Destruction Unit installed Sept 2003. New Membranes installed 2004
Brine quality excursion/process problem causing damage to membranes
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Parameter Year EPA Export 26-07-2013:00:21:51
NON‐TECHNICAL SUMMARY
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Process Description Micro‐Bio operates a membrane‐cell electrolysis plant in which Sodium Chloride Brine (salt water) is electrolysed to produce the Chlor‐Alkali products Hydrochloric Acid, Sodium Hydroxide Solution and Sodium Hypochlorite Solution. Membrane‐cell technology is acknowledged to be the most environmentally friendly method of production for these products and is the Best Available Technology for Chlor‐Alkali production. At the heart of the process is the cell membrane which is like a sheet of strong plastic and is susceptible to damage from different sources including mechanical damage due to vibration and chemical damage due to impurities (mainly from the brine). The membrane has a direct impact on plant efficiency, which in turn has a direct impact on Chloride (TDS) emissions. Consequently prolonged membrane life and high efficiency requires very stable production with minimal interruptions (e.g. shut‐downs) and high quality brine (even Calcium or Magnesium in the order of 0.1‐0.2 ppm in the brine can result in a drop in efficiency very quickly to the 90‐92% range). Emissions from the Electrolysis Plant The main discharge from the electrolysis plant is a liquid stream containing salt (Sodium Chloride) and Sodium Chlorate which is produced as a result of membrane inefficiency. The rate of production of Sodium chlorate increases as efficiency decreases and in order to reduce levels of Sodium Chloride two methods are used: 1.
Purging: By purging Spent Brine to drain you are removing Sodium Chlorate from the system. This means however, that you purge a lot of Sodium Chloride also and this results in high Chloride/TDS levels in the effluent stream from the site. The lower the membrane efficiency the greater the purge rate required as more Sodium Chlorate is produced during electrolysis. 2.
Chlorate Destruction: In order to reduce the quantity of Sodium Chloride purged it was decided to install a Chlorate Decomposition Unit. By removing some of this material from the system it allows for a reduced purge rate. Due to destruction costs it is not practical to operate on a system for total destruction. A combination of the above has been in operation in Micro‐Bio since 2003 and has resulted in the reduction of emissions from the site. EPA Export 26-07-2013:00:21:51
MICRO‐BIO (IRELAND) LIMITED
ELECTROLYSIS PROCESS BRINE LOOP Cl2
H2
ELECTROLYSIS
CELLS Spent Brine From Cells HCl 36% 2 NaOH Solution 4 Feed
NaOH
Steam .
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3 Feed
Brine
Spent Brine Acidification to
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Decomposition Unit Spent Brine Dechlorination Brine
Storage
5 ns
en
Co
Salt Brine
Purification
Brine
Production
6
De-Min Water
Plant
Brine Purge To Drain Recycled
Brine
7 Towns Water
Stream No. 1 2 3 4 5 6 7 STREAM ANALYSIS TABLE Flow Rate ( lphr) gpl NaCl 10000 300 7000 220 1200 220 1200 230 7000 220 6700 220 300 220 gpl NaClO3 5 9 9 0.5 7.5 7.5 7.5 EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(i):
EMISSIONS TO SURFACE WATERS
(One page for each emission)
Emission Point: COPY OF ORIGINAL TABLE SUBMITTED WITH APPLICATION
SE1
Source of Emission:
Discharge from Effluent Treatment Plant
Location :
Effluent Discharge Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
se
he
ru
River Blackwater
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ot
Name of receiving waters:
.
Emission Point Ref. No:
Flow rate in receiving waters:
Available waste assimilative
capacity:
m3.sec-1 95%ile flow
6.8
The Effluent is inorganic and cannot be further broken down. The River has a dilution effect.
Emission Details:
ns
en
Volume to be emitted
kg/day
Co
(i)
m3.sec-1 Dry Weather Flow
3.6
Normal/day
Maximum rate/hour
(ii)
100m3
320m3
Maximum/day
22m3
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission (avg)
Continuous
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
COPY OF ORIGINAL TABLE SUBMITTED WITH APPLICATION
TABLE E.2(ii): EMISSIONS TO SURFACE WATERS - Characteristics of the emission
Emission point reference number :
(1 table per emission point)
SE1
Prior to treatment
kg/day
kg/year
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
4,500
2,000,000
70,000
70,000
4,500
2,000,000
130,000
10,000
3,500,000
130,000
130,000
5,000
5,000
1,600
584,000
5,000
5,000
1,600
548,000
Total Phosphorous (as P)
2
2
0.64
234
2
2
0.64
234
Free/Combined Chlorine
5000
5000
1600
584,000
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
20
20
6.4
233.6
20
20
6.4
233.6
THM
1
1
0.32
117
1
1
0.32
117
Suspended Solids
70,000
130,000
ru
70,000
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he
-
kg/year
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Sulphate
0-14
ns
en
TDS
0-14
Co
Chloride
kg/day
.
Max. daily
average
(mg/l)
pH Units
Max. daily
average
(mg/l)
%
Efficiency
Max. hourly
average
(mg/l)
pH
Max. hourly
average
(mg/l)
As discharged
se
Parameter
10,000 3,500,000
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd
COPY OF ORIGINAL TABLE SUBMITTED WITH APPLICATION
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(i): EMISSIONS TO SEWER (One page for each emission)
ru
se
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Emission Point:
SE1
Location of connection to sewer:
Effluent Treatment Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
Name of sewage undertaker:
Fermoy Town Council
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Emission Point Ref. No:
Co
Emission Details:
(i)
Volume to be emitted
Normal/day
Maximum rate/hour
(ii)
100 m3
320 m3
Maximum/day
22 m3
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission
(avg)
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
COPY OF ORIGINAL TABLE SUBMITTED WITH APPLICATION
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(ii):
EMISSIONS TO SEWER - Characteristics of the emission
SE1
Prior to treatment
Max. hourly Max. daily
average
average
(mg/l)
(mg/l)
As discharged
% Efficiency
kg/year
Max. hourly
average
(mg/l)
Max. daily
average
(mg/l)
kg/day
kg/year
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
2,000,000
70,000
70,000
4,500
2,000,000
3,500,000
130,000
130,000
10,000
3,500,000
0-14
-
70,000
70,000
4,500
130,000
130,000
10,000
5,000
5,000
1,600
584,000
5,000
5,000
1,600
548,000
Total Phosphorous (as P)
2
2
0.64
234
2
2
0.64
234
Free/Combined Chlorine
5000
5000
1600
584,000
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
20
20
6.4
233.6
20
20
6.4
233.6
THM
1
1
0.32
117
1
1
0.32
117
Chloride
TDS
Sulphate
Suspended Solids
ns
en
0-14
Co
pH
kg/day
to
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Parameter
ot
he
ru
se
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Emission point reference number :
(1 table per emission point)
100%
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(i):
EMISSIONS TO SURFACE WATERS
(One page for each emission)
Emission Point: Based on Efficiency of 96%; 68 Cells, 85% of Operating Current Capacity
SE1
Source of Emission:
Discharge from Effluent Treatment Plant
Location :
Effluent Discharge Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
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to
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Name of receiving waters:
ru
se
.
Emission Point Ref. No:
River Blackwater
Flow rate in receiving waters:
The Effluent is inorganic and cannot be further broken down. The River has a dilution effect.
(ii)
kg/day
Co
Emission Details:
(i)
m3.sec-1 95%ile flow
6.8
ns
en
Available waste assimilative
capacity:
m3.sec-1 Dry Weather Flow
3.6
Volume to be emitted
Normal/day
80m3
Maximum rate/hour
22m3
320m3
Maximum/day
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission (avg)
Continuous
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(ii): EMISSIONS TO SURFACE WATERS - Characteristics of the emission
Based on Efficiency of 96%; 68 Cells, 85% of Operating Current Capacity
Emission point reference number :
(1 table per emission point)
SE1
Prior to treatment
As discharged
Max. daily
average
(mg/l)
kg/day
kg/year
Max. daily
average
(mg/l)
kg/day
kg/year
0-14
0-14
-
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
60,000
50,000
1,200
440,000
60,000
50,000
1,200
440,000
100,000
90,000
2,000
750,000
100,000
90,000
2,000
750,000
2,500
2,000
70
26,000
2,800
2,200
75
26,000
Total Phosphorous (as P)
1.0
0.5
0.1
3.0
1.0
0.5
0.1
3.0
Free/Combined Chlorine
1000
1000
80
29200
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
2
2
0.16
60
2
2
0.16
60
THM
1
1
0.004
1.5
1
1
0.004
1.5
TDS
Sulphate
Suspended Solids
ru
he
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Chloride
ns
en
pH Units
Co
pH
Max. hourly
average
(mg/l)
.
Max. hourly
average
(mg/l)
%
Efficiency
se
Parameter
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd
Based on Efficiency of 96%; 68 Cells, 85% of Operating Current Capacity
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(i): EMISSIONS TO SEWER (One page for each emission)
ru
se
.
Emission Point:
SE1
Location of connection to sewer:
Effluent Treatment Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
Name of sewage undertaker:
Fermoy Town Council
ns
en
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
ot
he
Emission Point Ref. No:
Co
Emission Details:
(i)
(ii)
Volume to be emitted
Normal/day
80 m3
Maximum rate/hour
22 m3
320 m3
Maximum/day
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission
(avg)
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
Based on Efficiency of 96%; 68 Cells, 85% of Operating Current Capacity
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS DIRECT
FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(ii):
EMISSIONS TO SEWER - Characteristics of the emission
SE1
Prior to treatment
Max. hourly Max. daily
average
average
(mg/l)
(mg/l)
As discharged
% Efficiency
kg/year
Max. hourly
average
(mg/l)
Max. daily
average
(mg/l)
kg/day
kg/year
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
440,000
60,000
50,000
1,200
440,000
750,000
100,000
90,000
2,000
750,000
26,000
2,800
2,200
75
26,000
0-14
-
60,000
50,000
1,200
100,000
90,000
2,000
2,500
2,000
70
Total Phosphorous (as P)
1.0
0.5
0.1
3.0
1.0
0.5
0.1
3.0
Free/Combined Chlorine
1000
1000
80
29200
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
2
2
0.16
60
2
2
0.16
60
THM
1
1
0.004
1.5
1
1
0.004
1.5
Chloride
TDS
Sulphate
Suspended Solids
ns
en
0-14
Co
pH
kg/day
to
f c Fo
op r i
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ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
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fo y.
ra
ny
Parameter
ot
he
ru
se
.
Emission point reference number :
(1 table per emission point)
100%
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(i):
EMISSIONS TO SURFACE WATERS
(One page for each emission)
Emission Point: Based on Efficiency of 94%; 68 Cells, 85% of Operating Current Capacity
SE1
Source of Emission:
Discharge from Effluent Treatment Plant
Location :
Effluent Discharge Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
he
ot
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
Name of receiving waters:
ru
se
.
Emission Point Ref. No:
River Blackwater
Flow rate in receiving waters:
The Effluent is inorganic and cannot be further broken down. The River has a dilution effect.
(ii)
kg/day
Co
Emission Details:
(i)
m3.sec-1 95%ile flow
6.8
ns
en
Available waste assimilative
capacity:
m3.sec-1 Dry Weather Flow
3.6
Volume to be emitted
Normal/day
90m3
Maximum rate/hour
22m3
320m3
Maximum/day
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission (avg)
Continuous
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(ii): EMISSIONS TO SURFACE WATERS - Characteristics of the emission
Based on Efficiency of 94%; 68 Cells, 85% of Operating Current Capacity
Emission point reference number :
(1 table per emission point)
SE1
Prior to treatment
As discharged
Max. daily
average
(mg/l)
kg/day
kg/year
Max. daily
average
(mg/l)
kg/day
kg/year
0-14
0-14
-
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
60,000
50,000
1,800
660,000
60,000
50,000
1,800
660,000
100,000
90,000
3,000
1095,000
100,000
90,000
3,000
1095,000
3,000
2,800
80
30,000
3,200
3,000
85
35,000
Total Phosphorous (as P)
1.0
0.5
0.1
3.0
1.0
0.5
0.1
3.0
Free/Combined Chlorine
1000
1000
80
29200
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
2
2
0.16
60
2
2
0.16
60
THM
1
1
0.004
1.5
1
1
0.004
1.5
TDS
Sulphate
Suspended Solids
ru
he
ot
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
Chloride
ns
en
pH Units
Co
pH
Max. hourly
average
(mg/l)
.
Max. hourly
average
(mg/l)
%
Efficiency
se
Parameter
100%
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd
Based on Efficiency of 94%; 68 Cells, 85% of Operating Current Capacity
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(i): EMISSIONS TO SEWER (One page for each emission)
ru
se
.
Emission Point:
SE1
Location of connection to sewer:
Effluent Treatment Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
Name of sewage undertaker:
Fermoy Town Council
ns
en
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
ot
he
Emission Point Ref. No:
Co
Emission Details:
(i)
(ii)
Volume to be emitted
Normal/day
90 m3
Maximum rate/hour
22 m3
320 m3
Maximum/day
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission
(avg)
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
Based on Efficiency of 94%; 68 Cells, 85% of Operating Current Capacity
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(ii):
EMISSIONS TO SEWER - Characteristics of the emission
SE1
Prior to treatment
Max. hourly Max. daily
average
average
(mg/l)
(mg/l)
As discharged
% Efficiency
kg/year
Max. hourly
average
(mg/l)
Max. daily
average
(mg/l)
kg/day
kg/year
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
660,000
60,000
50,000
1,800
660,000
1095,000
100,000
90,000
3,000
1095,000
30,000
3,200
3,000
85
35,000
0-14
-
60,000
50,000
1,800
100,000
90,000
3,000
3,000
2,800
80
Total Phosphorous (as P)
1.0
0.5
0.1
3.0
1.0
0.5
0.1
3.0
Free/Combined Chlorine
1000
1000
80
29200
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
2
2
0.16
60
2
2
0.16
60
THM
1
1
0.004
1.5
1
1
0.004
1.5
Chloride
TDS
Sulphate
Suspended Solids
ns
en
0-14
Co
pH
kg/day
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
Parameter
ot
he
ru
se
.
Emission point reference number :
(1 table per emission point)
100%
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(i):
EMISSIONS TO SURFACE WATERS
(One page for each emission)
Emission Point: Based on Efficiency of 91%; 68 Cells, 85% of Operating Current Capacity
SE1
Source of Emission:
Discharge from Effluent Treatment Plant
Location :
Effluent Discharge Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
he
ot
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
Name of receiving waters:
ru
se
.
Emission Point Ref. No:
River Blackwater
Flow rate in receiving waters:
The Effluent is inorganic and cannot be further broken down. The River has a dilution effect.
Volume to be emitted
Normal/day
Maximum rate/hour
(ii)
kg/day
Co
Emission Details:
(i)
m3.sec-1 95%ile flow
6.8
ns
en
Available waste assimilative
capacity:
m3.sec-1 Dry Weather Flow
3.6
100m3
320m3
Maximum/day
22m3
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission (avg)
Continuous
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
TABLE E.2(ii): EMISSIONS TO SURFACE WATERS - Characteristics of the emission
Based on Efficiency of 91%; 68 Cells, 85% of Operating Current Capacity
Emission point reference number :
(1 table per emission point)
SE1
Prior to treatment
As discharged
Max. daily
average
(mg/l)
kg/day
kg/year
Max. daily
average
(mg/l)
kg/day
kg/year
0-14
0-14
-
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
60,000
50,000
2,500
900,000
60,000
50,000
2,500
900,000
100,000
90,000
4,000
1,500,000
100,000
90,000
4,000
1,500,000
3,200
3,000
85
35,000
3,500
3,000
95
40,000
Total Phosphorous (as P)
1.0
0.5
0.1
3.0
1.0
0.5
0.1
3.0
Free/Combined Chlorine
1000
1000
80
29200
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
2
2
0.16
60
2
2
0.16
60
THM
1
1
0.004
1.5
1
1
0.004
1.5
TDS
Sulphate
Suspended Solids
ru
he
ot
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
Chloride
ns
en
pH Units
Co
pH
Max. hourly
average
(mg/l)
.
Max. hourly
average
(mg/l)
%
Efficiency
se
Parameter
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd
Based on Efficiency of 91%; 68 Cells, 85% of Operating Current Capacity
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
TABLE E.3(i): EMISSIONS TO SEWER (One page for each emission)
ru
se
.
Emission Point:
SE1
Location of connection to sewer:
Effluent Treatment Outlet
Grid Ref. (12 digit, 6E,6N):
180600E, 099311N
Name of sewage undertaker:
Fermoy Town Council
ns
en
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
ot
he
Emission Point Ref. No:
Co
Emission Details:
(i)
Volume to be emitted
Normal/day
Maximum rate/hour
(ii)
100 m3
320 m3
Maximum/day
22 m3
Period or periods during which emissions are made, or are to be made, including daily or seasonal variations (start-up /shutdown to be
included):
Periods of Emission
(avg)
60
min/hr
24
hr/day
365
day/yr
EPA Export 26-07-2013:00:21:51
Micro-Bio (Ireland) Ltd.
Based on Efficiency of 91%; 68 Cells, 85% of Operating Current Capacity
CURRENTLY THERE IS NO EMISSION TO SEWER. DISCHARGE IS TO WATER AS
DIRECTED BY FERMOY TOWN COUNCIL/CORK COUNTY COUNCIL
EMISSIONS TO SEWER - Characteristics of the emission
se
.
SE1
Parameter
Prior to treatment
Max. hourly Max. daily
average
average
(mg/l)
(mg/l)
As discharged
% Efficiency
kg/year
Max. hourly
average
(mg/l)
Max. daily
average
(mg/l)
kg/day
kg/year
-
6.0-9.0
6.0-9.0
6.0-9.0
6.0-9.0
900,000
60,000
50,000
2,500
900,000
0-14
-
60,000
50,000
2,500
100,000
90,000
4,000
1,500,000
100,000
90,000
4,000
1,500,000
3,200
3,000
85
35,000
3,500
3,000
95
40,000
Total Phosphorous (as P)
1.0
0.5
0.1
3.0
1.0
0.5
0.1
3.0
Free/Combined Chlorine
1000
1000
80
29200
<0.1
<0.1
<0.032
<11.7
200
200
64
23360
35
35
11.2
4088
TOC
2
2
0.16
60
2
2
0.16
60
THM
1
1
0.004
1.5
1
1
0.004
1.5
Chloride
TDS
Sulphate
Suspended Solids
ns
en
0-14
Co
pH
kg/day
to
f c Fo
op r i
yr ns
ig pe
ht ct
ow ion
ne pu
r r rp
eq os
ui es
re o
d nl
fo y.
ra
ny
ot
he
Emission point reference number :
(1 table per emission point)
ru
TABLE E.3(ii):
100%
EPA Export 26-07-2013:00:21:51