SEA Environmental Report for the Draft Cork City Development Plan 2022-2028
Table 4.3 Wastewater Treatment Plant Performance
Plant name and Reference Ballincollig New D0049-01
Treatment Provided
Overall Compliance (Pass/Fail)
Parameter Failed
Cause of Exceedances and Significance of Results (Water Quality)
Organic Capacities (PE)
As Constructed
Collected Load (peak week)
Remaining
33000
22507
10493
Tertiary
Fail
ortho-Phosphate (as P) - unspecified mg/l Total Phosphorus (as P) mg/l
Cause: Inadequate infrastructure. The WWTP discharge was not compliant with the ELV’s set in the wastewater discharge licence. The ambient monitoring results meet the required EQS. The EQS relates to the Oxygenation and Nutrient Conditions set out in the Surface Water Regulations 2009. The discharge from the wastewater treatment plant does not have an observable impact on the water quality. The discharge from the wastewater treatment plant does not have an observable negative impact on the Water Framework Directive status. Cause: No N and P removal treatment step The WWTP discharge was not compliant with the ELV’s set in the wastewater discharge licence. The ambient monitoring results does not meet the required EQS. The EQS relates to the Oxygenation and Nutrient Conditions set out in the Surface Water Regulations 2009. The discharge from the wastewater treatment plant does not have an observable impact on the water quality. The discharge from the wastewater treatment plant does not have an observable negative impact on the Water Framework Directive status. Cause: Influent flows were lowest during the months where this exceedance occurred, and chemical dosing was not adjusted sufficiently. The WWTP discharge was not compliant with the ELV’s set in the wastewater discharge licence. The ambient monitoring results meet the required EQS. The EQS relates to the Oxygenation and Nutrient Conditions set out in the Surface Water Regulations 2009. The discharge from the wastewater treatment plant does not have an observable impact on the water quality. The discharge from the wastewater treatment plant does not have an observable negative impact on the Water Framework Directive status. Cause: Old RBC media replaced; process optimisation ongoing. The WWTP discharge was not compliant with the ELV’s set in the wastewater discharge licence. The ambient monitoring results does not meet the required EQS. The EQS relates to the Oxygenation and Nutrient Conditions set out in the Surface Water Regulations 2009. Based on ambient monitoring results a deterioration in Ammonia (N) mg/l , concentrations downstream of the effluent discharge is noted. The discharge from the wastewater treatment plant does not have an observable negative impact on the Water Framework Directive status.
Cork City D0033-01
413200
274780
138420
Secondary
Fail
Total Nitrogen mg/l Total Phosphorus (as P) mg/l
Blarney D0043-01
13000
7655
5345
Tertiary
Fail
ortho-Phosphate (as P) - unspecified mg/l Total Phosphorus (as P) mg/l
Kileens D0329-01
Tertiary
Fail
Ammonia-Total (as N) mg/l Ammonia-Total (as N) mg/l BOD, 5 days with Inhibition (Carbonaceous BOD) mg/l ortho-Phosphate (as P) - unspecified mg/l Suspended Solids mg/l
1200
610
590
CAAS for Cork City Council
53
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