"The community stipulates that kitchen waste must be 'broken' before pouring into the trash. It's unsanitary when you pour it. It's unsanitary." Pulled out of the bag and piled it in the bucket, the weather is getting hotter and hotter, then the garbage bin has a taste! "With the implementation of the new version of the" Beijing Municipal Waste Management Regulations "on May 1, some communities will throw away food waste." "Breakable bags" is strictly implemented as a new rule for garbage disposal, but this has also caused some residents to wonder. Is it necessary to "break bags" of food waste? Isn't it "broken bag"?
The reporter learned that the "Beijing Municipal Waste Management Regulations" itself does not actually limit whether "bags" are thrown in when food waste is thrown in. However, in the "Beijing Residential District Garbage Classification Implementation Measures" promulgated by the Beijing Municipal Management Committee, there is such a statement: In order to effectively improve the quality of the separation of kitchen waste, delivery and transportation should be "no plastic rubber".
As to whether it is mandatory to "break bags" when throwing food waste, Ma Liming, deputy director of the Urban Construction and Environmental Protection Measures Department of the Standing Committee of the Beijing Municipal People's Congress, explained that when throwing food waste, residents are encouraged to put it in after breaking the bag. The situation is determined according to local conditions.
Why should it be released after "broken bags"?
Decide how to dispose of food waste
"Broken bag" or not is determined by the end garbage disposal capacity. The reporter learned from the city management department that at present, aerobic composting and anaerobic biogas power generation are the general methods of resourceful treatment of kitchen waste in this city.
Composting is the use of microorganisms to decompose food waste into fertilizer. However, food waste packed in plastic bags can be awkward for aerobic composting. The food waste in the plastic bags will have "hypoxia symptoms" when composting, which affects the composting effect. The ordinary plastic bags cannot be degraded in a short time. Obviously, using ordinary plastic bags to hold garbage is not suitable for composting this kind of food waste disposal mode.
Some residents asked whether plastic bags made of degradable materials can be used to pack kitchen waste. The reporter learned that degradable plastic bags can eventually degrade during the composting process, but the rate of degradation is slower than that of kitchen waste. At the same time, the price of a degradable plastic bag is basically 0.5 yuan or even higher. If it is used to install kitchen waste, it may greatly increase the cost of residents throwing in garbage.
In addition to composting, biogas power generation is another popular treatment method for kitchen waste in recent years.
The Tongzhou District Organic Resource Ecological Treatment Station was put into production and operation at the end of 2018. This large-scale processing station dedicated to "eating garbage" can process 600 tons of garbage every day, of which 200 tons are kitchen waste. "This is the largest system in the country and the only system that can simultaneously treat three different wastes, including food waste, manure, and sludge," said Yu Guangtao, general manager of the Tongzhou District Organic Resources Ecological Treatment Station.
Can food waste that is not "broken bags" be used to produce biogas for power generation? The reporter learned that all food waste entering the anaerobic fermentation tank must be "fine material" that has been squeezed or shredded. If you do n’t “break the bag” in advance, when the food waste is squeezed or shredded, some large and thick plastic bags are likely to be wrapped around the knife surface, the blunt squeeze, or the shaft.
Not only that, the reporter learned that in some cases, the plastic bag may also form a layer of impermeable film in the anaerobic tank, causing the biogas power generation system to collapse and cause greater losses.
It seems that the use of biogas power generation kitchen waste treatment mode, whether it is to use ordinary plastic bags or degradable plastic bags, it is obviously not "broken bags".
What should I do if the trash can smell?
Drain the food waste and put it in again
Some residents report that as the weather gets hotter, the kitchen waste bins in the community smell bad and attract mosquitoes and flies. But they are all kitchen waste bins in the community. The food waste bins set in some communities can hardly smell and keep clean.
Why is there such a contrast?
The reporter learned from the Municipal Urban Management Committee that, in accordance with the "Beijing Residential District Garbage Classification Implementation Measures", kitchen waste should be drained before it is thrown in. For example, residents make a bowl of instant noodles at home. After eating, they cannot throw soup and boxes into the kitchen waste bin. They must dump the soup of the instant noodles, and then dump the leftover noodles into the kitchen waste. Inside the barrel.
Under normal circumstances, the food waste generated in the community is essentially different from the "swill" generated in restaurants. "As far as the food waste bins of our ordinary residents' households are concerned, very few household food waste bins are thrown with odorous leftovers. Most household food waste bins are actually thrown away It is relatively dry garbage such as vegetable leaves, fruit peels, tea residues, egg shells, peanuts and melon seeds peels. Such food waste, even if it is left open in the house for a day or even overnight at home, is actually There will not be too much taste. "The staff of the Urban Management Committee explained, but if the brain with more odor is poured into the kitchen waste bin, it will cause the whole barrel of kitchen waste to" bubble ", which is easier after exposure to fermentation Produce odor. Therefore, it is recommended that residents drain the water before throwing away food waste to avoid "flavor."
In addition, in accordance with the "Beijing Residential District Garbage Classification Implementation Measures", kitchen waste should be "daily production and daily cleaning". During the peak of garbage disposal, the community can appropriately increase the frequency of collection and transportation or increase the number of collection containers to ensure that the trash can is not full.
What if I don't want to get my hands dirty?
Create your own "bag breaking artifact" to help
The waste steel pipes were cut into sharp, jagged barbs, welded into "L" shaped beams, and hung on the edge of the kitchen waste bin. A kitchen waste "bag artifact" was installed.
Residents just put the plastic bag full of kitchen waste into the bucket, and then gently lift it up, the bag body immediately "opens the hole" when it is scratched on the barb, and the garbage in the bag falls into the bucket and is empty The bag can be picked up and thrown into the other trash can. Since the "Bag-Breaking Artifact" was made in Beixiaguan Street, Haidian District, residents are no longer afraid of getting their hands dirty when throwing food waste.
In order to allow residents to throw away food waste "without dirty hands", the reporter learned that many areas in Haidian and Changping have developed food waste "breaking bag artifacts" that look different but have similar functions.
Some communities that have not yet been equipped with "bag breaking artifacts" have also come up with a convenient way. For example, the Guanlan International Community in Shuguang Garden in Haidian District not only has special scissors next to kitchen waste bins for residents to pierce kitchen waste bags; it also has a “washing place” next to the garbage sorting station and puts buckets For residents to clean their hands after pouring garbage.
Some communities provide no-clean hand sanitizer or disinfecting alcohol for residents to put their kitchen waste on for hand disinfection. In other communities, a garbage sorting instructor assists residents to lift the lid and “naked cast” food waste.