Paragraph 4 Emissions: airF1

(1)

SEPA must ensure that an authorisation for a titanium dioxide activity includes such conditions as it considers appropriate to ensure—

(a)

the prevention of the emission of acid droplets from installations,

(b)

that emissions into air from installations do not exceed the emission limit values set out in sub-paragraphs (2) to (5).

(2)

Emissions for dust must not exceed—

(a)

50 mg/Nm³ as an hourly average from major sources,

(b)

150 mg/Nm³ as an hourly average from any other source.

(3)

Emissions for gaseous sulphur dioxide and trioxide discharged from digestion and calcination—

(a)

6 kilograms per tonne of titanium dioxide produced as an annual average,

(b)

500 mg/Nm³ as an hourly average for plants for the concentration of waste acid.

(4)

The emission limit values in sub-paragraph (3) include acid droplets calculated as a sulphur dioxide equivalent.

(5)

Emissions for chlorine in the case of installations using the chloride process must not exceed—

(a)

5 mg/Nm³ as a daily average,

(b)

40 mg/Nm³ at any time.

(6)

Emissions limit values in this paragraph expressed in mass per cubic meter (Nm³) are to be calculated at a temperature of 273.15K and a pressure of 101.3kPa.

Annotations

Textual amendments

F1: Sch. 24 inserted (1.11.2025) by The Environmental Authorisations (Scotland) Amendment Regulations 2025 (S.S.I. 2025/165), reg. 1(2), sch. 15 (with sch. 23)