Ponds taking shape

18:56, Feb 09 2014
oxidation ponds
PONDS TAKE SHAPE: Primary oxidation ponds are sculpted near Aorangi Rd, in Washdyke.

Primary oxidation ponds are being sculpted near Aorangi Rd, in Washdyke.

This work is part of Timaru's new wastewater treatment plant upgrade, expected to be completed in April.

The $17 million project, which was due for completion in December, is part of the Timaru District wastewater management strategy and follows a five-stage upgrade of the main trunk sewer between the Timaru urban area and Aorangi Rd in Washdyke.

The upgrade is designed to provide separate waste streams for domestic and industrial waste and is designed to meet new effluent quality standards before the material is discharged to the sea.

To the north side of Aorangi Rd, 30 hectares of land is being sculpted into primary oxidation ponds and 8ha into maturation ponds.

The council's drainage and water manager, Grant Hall,  said the project was weather dependent.

''It's a biological process; it takes time. The key to it is with the separation, which has allowed us to minimise treatment costs.


The Timaru Herald