SCHEDULE 3
PART I REQUIREMENTS FOR DISCHARGES FROM TREATMENT PLANTS
Analyses concerning discharges from lagooning shall be carried out on filtered samples; however, the concentration of total suspended solids in unfiltered water samples shall not exceed 150 mg/l.
One or both parameters may be applied depending on the local situation. The values for concentration or for the percentage of reduction shall apply.
Parameters | Concentration | Minimum percentage of reduction {s003} | Reference method of measurement |
---|---|---|---|
Total phosphorus | 2 mg/l P (10,000—100,000 p.e.) 1 mg/l P (more than 100,000 p.e.) | 80 | Molecular absorption spectrophotometry |
Total nitrogen {s004} | 15 mg/l N (10,000—100,000 p.e.) 10 mg/l N (more than 100,000 p.e.) | 70—80 | Molecular absorption spectrophotometry |
{s003} Reduction in relation to the load of the influent. {s004} Total nitrogen means: the sum of total Kjeldahl-nitrogen (organic N + NH3), nitrate (NO3)-nitrogen and nitrite (NO2)-nitrogen. |