A. OPAK
Introduction
Alternative Pool Water Packing Operation (OPAK) includes strategies and approaches to manage different water resources other than surface and underground water. LUAS has identified 100 ponds as alternative water sources through the SORSS package.
In addition, LUAS through Section 48 of the 1999 LUAS Enactment has gazetted as many as 20 alternative water source reservoir ponds out of 100 ponds to accommodate additional needs if the river water level is affected due to the dry season.
Objective
The objective of the development of alternative water sources is:
- Maintaining the sustainability of raw water resources in the State of Selangor
- Provide additional water sources from ponds, lakes, former mines and underground water to overcome the problem of water shortage during the dry season.
- Act as a medium for the purpose of diluting the river in case of pollution.
B. Tampoi Hill Alternative Pool
Introduction
The Bukit Tampoi Orang Asli Pond is an alternative to address the water supply crisis that occurred due to the shutdown of the Bukit Tampoi Water Treatment Plant (WTP) during the dry season. Among the factors that cause this situation is due to the decrease in river water level due to the absence of rain around the catchment area and cause the rate of dilution to decrease in the river which in turn increases the rate of ammonia concentration.
The ponds to be used are two (2) ponds located in the Bukit Tampoi Orang Asli Gazette area next to Sungai Langat near the Bukit Tampoi WTP. The estimated volume of the pond is 37,500 mᶟ for pond A and 20,000 mᶟ for pond B. The use of Pool A and Pool B as alternative water sources will help in addressing the water crisis, especially during the dry season by lowering the ammonia concentration which is a major factor in WTP shutdown. Bukit Tampoi.
Schematic diagram of the River Water Pumping Operation to the pond and further to the Plant inlet
The purpose of this Bukit Tampoi Pond Water Pumping Operation is as an alternative to prevent WTP shutdown by ensuring that the water source entering the WTP has a low ammonia level and complies with the Raw Water Standard Requirements which does not exceed 1.5 mg/l.
Pumping river water to pond A
There are two (2) pumps in Pool B for pumping work to the plant inlet
There is a culvert between pond A and pond B to channel water from pond A to pond B. Water quality will be tested every two (2) hours by the LUAS Laboratory and Environmental Management Unit to ensure the Bukit Tampoi Orang Asli reservoir contains low ammonia for channeled to the Bukit Tampoi Plant.
Pump pipeline to the inlet of Bukit Tampoi Plant
Water from pool B enters the inlet