Water & Wastewater Asia Sep/Oct 2018

Pantai 2 Regional Sewage Treatment Plant, a state-of-the-art mechanised underground facility with public amenities above ground Water & Wastewater Asia • September / October 2018 When wastewater and lifestyle come together, benefits abound Doubling wastewater treatment plants as recreational spaces is not a new concept, with nations such as Singapore looking into it due to land and space constraints. But with Pantai 2 Regional Sewage Treatment Plant, the concept and benefits are made much clearer. P antai 2 Regional Sewage Treatment Plant (Pantai 2 RSTP), built by Malaysia’s national sewerage company, Indah Water Konsortium Sdn Bhd (IWK), has madewaves in Southeast Asiawith its cutting- edge underground mechanised facility and public amenities close to Malaysia’s Kuala Lumpur City Centre, a densely populated area that includes Petaling Jaya, Mid Valley, and KL Sentral, the largest transit hub in Malaysia. Capable of treating up to 320 million litres of water daily for up to a population of 1.423 million, IWK overcame numerous challenges to realise the plant, addressing numerous issues including housing and sustainable living. But all these factors came together to create an innovative solution that has culminated in Pantai 2 RSTP, Asia Pacific’s first wastewater of its kind and addressed accordingly. “The treated water will be used for washing, cleaning, chemical preparation, and even supply water to the aquatic skylight located in the Eco Park,” Haniffa elaborated. “On top of that, we also generate power from the biogas from the anaerobic digester and rain harvesting system, to name a few.” At present, Pantai 2 RSTP is producing less than 10 per cent of energy for consumption, though the amount is due to rise to 15 per cent when it has received 100 per cent of its designed hydraulic capacity. “Pantai 2 RSTP’s research and development team is currently looking for ways in which to enhance the production of biogas as well as explore new technology to be self- sufficient in terms of energy production,” Haniffa added. “We hope to have another treatment plant that is also a recreational space. In this continuation of the article first published in the immediate last issue, Water & Wastewater Asia explores Pantai 2 RSTP’s many benefits with Ir. Mohamed Haniffa Hj Abdul Hamid, chief operating officer of IWK. RESOURCE RECOVERY One of the few large-scale plants equipped with various green elements and technologies, Pantai 2 RSTP is looking to initiate a paradigm shift in wastewater treatment facilities, encouraging them to move towards sustainable water management and promote a low carbon environment. Though the Pantai 2 RSTP and the Eco Park located on its grounds are two different entities with no common shared facility and separate operating boundaries, the dual usage of the plant and public park is the first