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Zuikerbosch New Filter Block

250 000 000L/day

 

Project Value: R 84,480,925.91

Client: Rand Water

Completion Date: 2016

Consulting Engineer: Aurecon

 

Rand Water’s Zuikerbosch Water Treatment Works is one of two main sites responsible for providing potable water to the Tshwane and Gauteng Metropolitan areas. The plant comprises of 4 discrete treatment systems, and it was deemed necessary to increase the capacity of System 2 by 250 000 000 L/d. Eigenbau was awarded the contract to design, supply, deliver, install, test, and commission all the civil, mechanical, electrical, and control equipment necessary to achieve the increase in capacity.

The project involved the construction of 2 filter cells, each spanning 18 metres in length and 4.8 in width, comprising a total of 12 monolithic, false-floor type filters, including all ancilliary equipment, such as actuated sluice gates and valves, pipework, access hatches, troughs and weirs, under-drainage system, and filter media. The filtration system portion of the works included the supply and installation of 4 by 75 kW backwash pumps, 3 by 90 kW positive displacement blowers in acoustic housings, along with ancilliary piping and isolation equipment.

The electrical scope of work included a full SCADA system capable of controlling and monitoring all of the installed flow, level, and pressure instrumentation, and equipment (which also integrated into the existing plant control system), small power and lighting, MCC’s, and all related cabling and earthing requirements. Sundry installations included overhead cranes for the removal of the backwash pumps and blowers, ventilation equipment for the backwash pump house, structural steel mezzanine for the backwash pump house, and tie-in of the existing chlorine solution dosing system. Upon completion of the works, a proving period was initiated in which all systems were monitored for satisfactory performance, before training of staff could take place.