Section 7: Pollution control

7. Pollution control (a) Air pollution control— (i) Gravity settling chambers; (ii) spray chambers, water spray nozzles; (iii) modification to chimneys (stacks) to make provisions for sampling ports and related structures; (iv) scrubbers; (v) multi-clones and/or modifications to boilers for accommodating same; (vi) subsiders/screens/settling tanks; (vii) flyash dewatering devices; (viii) flyash recovery and refiring systems; and (ix) enclosures for conveyors. (b) Water pollution control— (i) Rechannelling work with respect to separation of condenser water streams from the other streams; (ii) high efficiency entrainment arrestors; (iii) oil and grease separators; (iv) aerobic and anaerobic ponds or tanks; (v) filtration ponds or sedimentation pond; (vi) aerators; (vii) spray ponds and cooling towers; and (viii) haulage trucks. (c) Noise pollution control— (i) Silencers; [Issue 9] S49 – 40 Revised Laws of Mauritius (ii) enclosure for equipment, piping, pressure reducer valve and safety valve.