Yahoo! News
Summary
New Zealand is confronting a perfect storm.
Its energy grid faces three pressing challenges at once: an unreliable electricity supply, strict emissions reduction targets and ongoing environmental issues related to wastewater ponds.
As the country prepares to meet growing energy demands, the variability of wind, solar and hydroelectric power has made year-round electricity generation hard to ensure.
Compounding the issue are New Zealand’s emissions targets and avoidable emissions from wastewater treatment plants.
We need immediate, practical solutions. One lies hidden within our wastewater systems.
While biogas systems have enormous potential, they do have one significant drawback. The heat generated during methane combustion can cause wastewater ponds to overheat, leading to operational challenges such as excessive algal growth.
This is where cogeneration or combined heat and power systems come into play.
These systems capture the excess heat from biogas combustion and convert it into additional electricity. This not only improves energy efficiency but also regulates the temperature of the wastewater ponds, helping to reduce algal growth and evaporation.
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