That's an excellent and very practical question! It's great to see people thinking about sustainable alternatives for public spaces. The short answer is yes, there are biodegradable bags designed to fit standard-sized public waste bins, but it requires a bit of attention to detail.
Standard public waste bins, like those common in parks, offices, and street corners, often have a capacity ranging from 20 to 55 gallons, with many around the 30-35 gallon mark. The key is to look for "compostable liners" or "biodegradable bin bags" specifically sold in these commercial sizes. Many suppliers now offer rolls of bags in dimensions like 30" x 40" or 33" x 48", which are tailored to fit common rectangular or round bins.
However, the most crucial step is to check for proper certification. Look for bags certified to standards like ASTM D6400 (US) or EN 13432 (EU). These certifications ensure the bag will break down in an industrial composting facility. Remember, simply tossing a "biodegradable" bag into any public bin isn't the full solution. For it to decompose correctly, the waste stream must be directed to a commercial composting facility. It's always best to check with your local waste management authority to see if they accept compostable bags in public bins. By choosing the right certified size, you can help make public waste disposal a little greener.