Composting in the City: The Good and the Rotten


| 4/2/2010 9:41:44 AM


Compost pile in the UK

Berkeley, California, is proving that municipal composting of urban food and yard waste is possible—but the city’s program is also experiencing growing pains, according to “Compost Confidential” in the Northern California environmental magazine Terrain:

Good ideas—like enriching the soil of organic farms with compost made from urban food waste—are not necessarily meshing with other good ideas, like using compostable plant-based plastics rather than disposable petroleum-based plastics. Pesticides approved for use on lawns are persisting all the way through the industrial composting process and contaminating the end product, making it unsuitable for organic agriculture. And the development of alternative composting technologies—namely biogas digesters—is provoking a debate over what food and yard waste should be used for.

In other words, large-scale composting is not as simple as it might seem—and it might not always be as grass-roots as some advocates hope. Terrain points out that “composting is an up-and-coming industry” that corporate waste haulers are eager to get into. Texas-based Waste Management Inc. has invested in British Columbia’s Harvest Power, the largest food and yard waste composting facility in North America.

Other cities are getting into the act. Portland, Oregon, plans to start a pilot food-waste program this spring, according to Sustainable Industries, which also reports that Portland, Corvallis, and Salem, Oregon, already have limited commercial food-waste collection.

In related news, Grist reported on April 1 that McDonald’s ditch a planned composting program “after scientists confirmed that no item on the McDonald’s menu is compostable.” Now that smells funny.



Source: Terrain, Sustainable Industries (article not available online), Grist



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