Ammonia gas concentration inside the wastewater treatment plant of O

Ammonia gas concentration inside the wastewater treatment plant of O · PARK2 returned to normal

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A spokesperson from the Environmental Protection Department (EPD) said today (October 17) that with regard to the incident last night (October 16) involving concentration of ammonia gas inside the wastewater treatment plant of the Organic Resources Recovery Centre Phase 2 (O．PARK2) exceeding the Occupational Exposure Limit set by the Labour Department (LD) due to malfunction, the ammonia gas concentration has reduced to normal levels as a result of assistance from the Fire Services Department (FSD) and LD in handling the incident. On-site monitoring data during this time indicate that the incident had not caused any impact on the surrounding environment.

EPD's contractor has carried out emergency measures to maintain ammonia gas concentration at normal levels, including enhancing ventilation and temporarily suspending operation of the wastewater treatment plant for emergency repairs. During the repairing period of the wastewater treatment plant, O·PARK2 will continue to accept food waste with service adjustments as necessary. The repair works will be conducted in accordance with LD and FSD's safety advice.

Ends/Friday, October 17, 2025
Issued at HKT 1:46

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