Ingenieur Vol. 75 ingenieur July 2018-FA - Page 16

INGENIEUR Figure 3: Typical Biogas System using POME Landfill Biogas Systems Sanitary landfills produce enough biogas to generate 1 or 2 MW of power. The landfill must be sanitary and have a lining with membranes and a piping system installed at the bottom to transport the biogas to the surface. Landfill biogas is normally exclusively exported to the Grid since there is no inhouse load. Sludge Biogas Systems This is a yet unexplored opportunity in Malaysia. In India, all the sewage treatment plants (STPs) produce at least 70 % of the electricity that they need, with some producing 100 %. Our sewage utility has only one STP generating power facility which is a research project at a local university. If properly handled, each STP can generate a few hundred kW of power for consumption by the STP itself. Waste Food Biogas Systems These systems are yet unexplored in Malaysia. M any ap ar t m ent c o mp l exe s gener ate huge amounts of kitchen waste which are 6 14 VOL VOL 75 55 JULY-SEPTEMBER JUNE 2013 2018 indiscriminately mixed with other rubbish and end up in landfills. If the Joint Management Boards (JMBs) of the complex introduce a strict policy to segregate kitchen waste, and this waste is used in small anaerobic digestors onsite, it can generate a few kW of power, enough to power the common areas in the complex. Local councils could introduce legislation to mandate this. Kitchen waste from restaurants can also be collected to generate a few hundred kW of power. BIOMASS POWER GENERATION SYSTEMS In Malaysia, there are two main biomass power generation systems, one using agriculture waste, and a second, using municipal solid waste. Agriculture Waste Biomass Systems The most common agriculture waste is the empty fruit branch (EFB) from the palm oil mills. These biomass plants can generate between 5 to 10 MW of power and are normally connected to main