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5 October 2001 |
Odour Over City As Plant Changes
Odour from the Christchurch City Council Waste Water Treatment Plant at Bromley affected many parts of the city today.
The plant is half-way through a $33.7 million upgrade and is at a stage where the connection of some new facilities is being made to existing installations.
This means that some parts of the system have to be removed from service, such as the trickling filters. These units go through a “dying” process that produces large quantities of odour. This, in conjunction with a gentle easterly wind, carried the odour to many parts of the city today.
The odour prompted up to 40 calls of complaint to the City Council today, starting at 8.30am. Flushing is carried out regularly to try to control odour in the trickling filters. Work is to start on the “cut in” on Monday 8 October, by which time the filter will have shed its worst odours. The full plant should be back in service in about two weeks. The dry weather exacerbates the strength of the odour and attempts are being made to minimise its strength. However, in March next year further work will be carried out on the filters and odour could be released again. The plant upgrading is due to be finished in 2006.
Further information: Julie Burgess: City Water and Waste Unit: 941 6316.