FOLLOW UP : Clear The AIR says : Where is the legislation on separation of food waste at source ? Where is the Green bin collection system for food waste and yard waste as exists elsewhere in the modern world (such as Santa Monica... ) This is all very well to spend taxpayer money but think of the cost. Let us assume the plant lasts for 25 years. That’s $1,500,000 / 25 years = 60 million per year plus 75 million per year operating cost (which will increase over the lifetime of the facility) … total HK$135 million per year min for treating 200 tonnes a day That works out at $135,000,000 / 200 tonnes / 365 = $1,849 / tonne… less the value recovered from the electricity (14million kWh at say $1 per kwh) = $1,657/ tonne. Low grade foodwaste @ 78% - 90% water content = that is pretty costly and we then still have 50 tonnes of low grade compost a day that nobody wants so it will still have to be handled and transported to go in the landfill at $450 per tonne (@), once the airport grass is full of the stuff, assuming the compost does not become Foreign Object Debris (FOD) , that is. So for every tonne of food waste processed in this way it will cost $1657 + (50 tonnes @ $450 landfilling) = $1,770 / tonne compared with $450 per tonne to handle, transport and put it in a landfill. We only gain 1.5 MW at best, not enough for 1 large commercial building. This is not the right way to go….is it ?? Are Legco going to agree to pay for this when they find out how much it will cost?? Waste Food should go through the sewers whether digested or not and the remaining dry MSW with the high calorific and recyclable value after picking out the true recyclables should go to recycling as directed by Legco Panel on the Environmental Affairs in 2012 when addressing the Administrations request for landfill extensions and an incinerator.
Posted on: Thu, 13 Mar 2014 17:54:38 +0000
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