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  • Day 14

    H-Power

    June 8, 2022 in the United States ⋅ ☁️ 72 °F

    Most successful public works project
    Saved Hawaii from creating more landfills
    Get trucks from city and commercial business
    Burn trash to create energy by heating up water to steam
    Charges $91 per ton of garbage
    Most profitable city operation on the island
    Three power plants in a row, h-power is considered renewable energy
    It can contribute 70 megawatts of energy
    Coal power plants have the highest emissions of carbon
    The old part of the plant is less efficient
    The new part doesn’t haven’t to process the trash before burning it.
    - the difference in technology allows them to be more efficient
    - The new plant can hand more waste and different types
    300-400 trucks come in with trash and 20-25 trucks leave with ash per day
    - 90% decrease
    Landfill will only take things unrecyclable or noncombustible

    - crane has to move trash back to leave space on the tipping floor
    - Put trash on the hopper to keep fuel
    - Can hold 5,000 tons, 2 total so 10,000 ponds total at the plant

    One of the only plants that takes trash and sewer sludge and deal with them separately
    If it went to the landfill it would be 80 worse releasing greenhouse gases

    When the economy goes down, trash goes down

    Each town had their own dump site in the 1940s so their are about 60 abandoned dump sites

    They only use non-drinking water for their plant
    - good because of the drinking water shortage
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