With the entry into force on 1 july of the shanghai regulations on the management of living waste, the classification and disposal of such waste has become the focus of popular discussion in the city. Due to novelty and convenience, some citizens have begun to attempt to install after-cookers in their homes and to smash the kitchen with wet garbage into the sewers, thus avoiding classification difficulties. However, this seemingly simple approach is perceived by the relevant authorities as adding to the pipeline burden. The experts also indicated that such a practice would threaten to deviate from the original purpose of the classification。
The rest of the crusher went off
Shanghai is the first city in the country to impose the classification of waste by means of human legislation. Individuals who throw waste in the country will face a fine of between $50 and $200 and a fine of between $5,000 and $50,000。
In order to implement the classification of waste, the competent departments of the shanghai city government have issued approximately 20 supporting documents, including a catalogue of non-involvement by hotels, a catalogue of non-involvement by the catering industry, restrictions on the use of such items by public institutions, etc., which have highlighted the determination to declare war on waste in shanghai。
Over time, the public's recognition and acceptance of waste classification has been increasing. However, the sorting of waste remains a time-consuming and labor-intensive task compared to the placement of a piece of household garbage in a garbage can. In order to make it easier and, in particular, to dispose of wet waste in the kitchen more quickly, the rest of the cookers are in the city。
Beijing citizen li ho has recently purchased an after-cook crusher through the internet and installed it under the kitchen dishwasher, with the leftovers, the soup base and the machine torn apart, so that the tap flushes the water. It's a lot easier to sort out wet and greasy scraps." for the first time in the course of study abroad, it feels convenient and clean, and beijing will have to promote waste classification sooner or later, rather than use it earlier and get used to it.” lee ha said to the journalist of the economic reference。
Journalists are searching for a “cooker crusher” on a treasure hunt, and they can see that there is a lot of branding, with unit prices ranging from a thousand to $56,000. The product comments focus mostly on key words such as “simple” and “clean”. A number of buyers have indicated that they are located in shanghai and that they feel “excellent” when they complete their installation, as the recently purchased people pile up and even have to wait in queues after an appointment. In consultation with journalists, some treasure shopkeepers have also indicated that recent sales have been high and that installation queues are “normal”。
According to some citizens, thermal distribution of residual crushers is linked to the classification criteria for “dry garbage”. In the view of many, instead of being concerned with a precise classification of food items and facing a fine of up to $200 for the wrong individual tossing the garbage, the disposal of the waste into the sewers becomes the most practical and rapid method of doing so, and the cooker is naturally pushed onto the hot-seller table。
Food residues add to the pipe burden
While it is convenient to have a cooker, concern has also been expressed that scraps of cooking leftovers can cause sewer congestion. This fear has not proved superfluous。
The governor of greening and municipal capability management in shanghai, deng changping day, indicated that the conditions and capacity for sewage treatment, which are limited to the shanghai drainage pipeline, could have a significant impact on the pollution of rivers, congestion, etc. If leftovers were to be crushed into sewers. In large cities such as shanghai and so on, the sewage capacity of other small and medium-sized cities may not be ideal。
There has long been discussion about the suitability of our urban families for the installation of a cooker. Shenzhen city has an average annual increase of 5. 6 per cent in waste disposal from 9863 tons in 2006 the daily rate has increased rapidly to 17,100 tonnes/day in 2016, with increasing pressure on waste disposal. To this end, shenzhen has introduced the " classification and reduction of waste from lives in shenzhen city " , which explores the establishment of government-led, sectoral synergies, market operations and public participation mechanisms. Local residents have called for clear guidance from the government on the suitability of the after-crusher for domestic installation。
What is most troubling to the public today is that the after-effect crusher is popular in the countries of europe and the united states, and why should it be discussed in china
As far back as 1927, an american inventor invented the product for his wife, and he became the easy founder of the world's largest waste disposal brand. In terms of structure, the cooking residual shredder consists of the core electric press and parts such as rubber leather, grinding cavities and grinding plates. The food residue enters the grinding board through the sink, then the wheel in the grinding cavity is driven by electric power, is crushed in the grinding cavity by stainless steel grinding hammers, and finally grinds out of the shredder with tiny particles and enters the wastewater treatment system through the sewers。
According to the expert, the high level of use of cooking residual crushers in households abroad is inextricably linked to the structure of drainage pipes and diets in the west. In the west, the drainage pipes are generally much wider, with the rest of the leftovers less oil and less salt and less food residues that are not easily condensed even in the pipes, so there are no major problems in using them. According to lee ho, almost half of the households in the united states already have a cookout crusher. There are no restrictions on the use of cookout crushers at the government level。
However, whether it is suitable for domestic use in china is related to many factors, including population density, sewage discharge capacity, and drainage. The high population density in the country, the habit of the inhabitants cooking at home, and the fact that all of them are drained through the drain pipe, would be a very large volume and a huge test of pipeline capacity. Moreover, in china, food is very oily, salty, rich in variety and leftovers, and there are many oily residues in food residues, which can easily be condensed in pipes. These are very different from those in the west, so experts do not recommend large-scale installation of after-crushers in the home at this time。
Chiang jian guang, a professor at the faculty of environment of the university of tsinghua, stated that after having been crushed, the leftover waste was not liquid and would be deposited in a pipe for a long time. Especially in the winter, the fat from the food enters the pipes, is mixed into the garbage and is frozen, and is likely to cause congestion in large pipes。
In response to the characteristics of domestic surplus waste, the industry brand of baker bast is willing to increase the motor speed of the machine to 2,600 per minute to 3,500 in order to be useful, not chicken ribs. In contrast, machines suitable for the food structure of families in the united states generally move between 1,400 and 1,700。
The whole chain helps the habit grow
Indeed, there are studies in the academic world as to whether the residual crusher will increase the burden of drainage。
According to the report on the acceptance of the study and evaluation of the model engineering for the application of the after-cooking household waste disposal kit, released by the university of tsinghua, the cod (chemical oxygen requirements) and ss (suspension) indicators in the water quality of the web pipe have significantly increased for the small areas of the sample where the after-crash disposal units are centrally installed, indicating that the residual waste is disposed of by shredders and enters the sewers, which does result in an increased load of the sewage pipes。
In addition to increasing the pipeline burden, industry experts are more concerned about the fact that residual waste appears to be broken down directly without being sorted. To some extent, it is tantamount to shifting pressure to drainage and sewage treatment, and may even indirectly cause pollution。
“the idea of residual waste shredding and waste classification contradicts the idea of resource recovery.” according to liu kwon, general manager of the beijing tianlong natural reclamation and reclamation company limited, garbage is recycled and reused as much as possible is the most environmentally friendly way, and garbage is smashed into sewers, eventually becoming a sediment, and thus cannot be reused。
While cooking waste has high water rates, high organic content, nutritional abundance and high utilization value, it is also prone to decomposition, leachate and deodorant, and to viruses and fungi, causing health and environmental hazards. In recent years, resource-based, quantitative and non-hazardous disposal of surplus waste has received high priority from governments. Fertilizer treatment, feedification treatment and energyization treatment are clearly more valuable than shredding。
The sorting of garbage is not a small matter. According to the world bank, china is the world's second largest producer of solid waste, after the united states, producing 210 million tons of municipal solid waste in 2017 alone. The opening of the door to waste classification is now a work in progress。
"the greatest value of surplus junk is being used." according to wang lixin, director general of the eco-city of china tianjin city, based on practical experience with eco-cities waste classification, after a precise classification, surplus cooking waste can be used as non-hazardous farm fertilizer and can be reused。
Cooking waste, which is rich in organic matter and nitrogen, phosphorus, potassium, calcium and various trace elements, turns into organic fertilizer, not only keeps food steady, increases production, promotes recycling of resources, addresses environmental problems caused by poor handling of cooking waste, but also reduces inputs from external inorganic sources, saves investment, protects the environment and contributes significantly to soil, food safety and human health。
According to wang li, there are other countries that have attempted to generate electricity from cooking waste or to extract biooil as fuel for transportation, which has opened up new ideas for the disposal of cooking waste in our country and is the way forward。
Experts indicated that waste classification needed to be advanced incrementally, starting with the development of waste classification habits, making the waste around them valuable and re-energizing its value. The government is also continuing to improve the incentives and recycling chain for the classification of waste and to create the conditions for easy participation in the classification of waste. It is only through a chain-wide effort that the waste is classified in such a way that it will not go back。
The original title, detached from what was meant by the garbage classification
