On August 2 nd, children learned to use the intelligent garbage sorting and recycling machine in the "garbage sorting" summer classroom activity in Licang District, Qingdao. Photo by Wang Haibin (People’s Vision)

　　On June 27th, in the Steel Ball Community of Erlang Street, Jiulongpo District, Chongqing, two staff members of Chongqing Environmental Sanitation Group were sending the sorted perishable garbage into a special perishable garbage transport vehicle. Xinhua News Agency reporter Liu Yushe

　　On August 13th, Chen Liangen (pictured right), a garbage collector in Xin ‘an Town, Deqing County, Zhejiang Province, collected agricultural harmful waste at the breeding base of freshwater shrimp farmers in Xinqiao Village of this town. Photo by Yao Haixiang (people’s picture)

　　What is the use of leftovers? What process does a plastic bottle go through before it can become a useful material? How to deal with waste electronic products and expired drugs to reduce the harm? Once upon a time, our impression of garbage sorting and recycling was a loud voice shouting in the early morning of the community — — Collect junk! Today, the Internet of Things intelligent recycling machine, garbage sorting applet, anaerobic microbial degradation system, etc., make garbage sorting and recycling become "high", and more recyclable garbage becomes renewable resources.

　　On July 1, the Regulations on the Management of Domestic Waste in Shanghai was officially implemented, which triggered a heated discussion among netizens. On the same day, four topics related to garbage were listed on Weibo Hot Search List. In addition to Shanghai, people are concerned about when their cities will start to implement strict garbage sorting policies. According to the requirements of the Ministry of Housing and Urban-Rural Development, by 2020, all cities will fully implement the garbage sorting system, and 46 cities as the first pilot will initially establish the garbage sorting treatment system. Some enterprises have a keen sense of smell. In early July alone, about 200 garbage sorting enterprises were registered.

　　What’s the use of kitchen waste?

　　Less than 8 o’clock every day, Li Ming sets off in a closed electric tricycle. His destination is the kitchen waste drop point in Donghuashi Street, Dongcheng District, Beijing, which is the green vat where residents dump leftovers. His job is to sort the kitchen waste and transport it to the centralized point, and hand it over to the staff of the sanitation group for subsequent treatment.

　　Summer in Beijing, even in the morning, is full of enthusiasm. After Li Ming opened the green bucket, he first took a photo, recorded the original release status, and then put on gloves to sort out impurities other than kitchen waste such as plastic bags that residents threw wrong. In a short time, sweat appeared on his forehead. At this time, he took a measuring rod from the car, reached into the bucket to detect, and transmitted the data and the sorted trash can photos to the system. He told us: "In summer, kitchen waste is easy to breed mosquitoes, and we need to clean and deodorize the trash can."

　　Li Ming is an employee of Beijing Tianlong Tianjie Company. The company has 204 kitchen waste bins in the whole street of Donghua City, and each staff member is responsible for about 10 to 15 bins. Liu Quan, the manager of the company, said: "The first step of garbage sorting, recycling and reuse is residents’ putting in. If the work in this step is not done well, the following steps will be affected. Garbage sorting means doing ‘ People ’ Work. "

　　For decades, Liu Quan has explored a set of effective methods. "We tell residents about the necessity of garbage sorting through leaflets, activities and publicity. Invite street workers and party member cadres to visit the garbage treatment plant, let them see how much garbage Beijing will produce every day through field visits, and realize the harm of mountains of garbage to the environment. Their consciousness has suddenly improved, and more and more residents have begun to consciously put it in. " In the case that the amount of kitchen waste generated is generally stable, the amount of kitchen waste in the community has increased from 60 tons per month at the beginning of 2018 to more than 150 tons per month now, and it has entered the recycling channel.

　　It is understood that the domestic waste in China has the characteristics of "three highs and one low", that is, high water content, high impurity, high organic matter content and low calorific value. Chinese people’s eating habits make kitchen waste account for about 50%-60% of the garbage. This kind of wet garbage has high moisture content and low calorific value. It takes 5-7 days to discharge 20%-25% of the total garbage, and the calorific value can reach the most suitable combustion conditions.

　　According to the characteristics of kitchen waste in China, some enterprises are constantly exploring. The project of Guangzhou East Biomass Comprehensive Treatment Plant invested, constructed and operated by Langkun Environment Group is one of them.

　　The relevant person in charge of the factory said: "We mainly deal with catering waste, kitchen waste, etc., and adopt the process of pretreatment+combined anaerobic digestion+comprehensive utilization. At present, the contracted processing scale for the six districts in downtown Guangzhou is 400 tons of catering waste, 600 tons of kitchen waste, and 2,040 tons of other kinds of biomass waste. It is currently the largest urban organic waste treatment project in the world. "

　　How to solve the problem of many impurities and complex components in kitchen waste? The relevant person in charge of the factory said: "After the kitchen waste is delivered to us, we must first remove impurities, which is the most difficult in all aspects of kitchen waste treatment. The way we take is to carry out high-pressure pressing separation. The purpose is to realize the dry-wet separation of kitchen waste and get wet components (organic matter) and dry components (impurities). "

　　The factory adopts automatic ultra-high pressure garbage pressing device, and the separated garbage can be turned into "treasure", in which the wet component is used for anaerobic fermentation, and the biogas generated in anaerobic fermentation can be converted into electric energy; Anaerobic fermented biogas residue can be processed into bio-fertilizer raw materials after dehydration. The dry components are used for incineration to generate electricity.

　　How can a beverage bottle be reborn?

　　According to the data released by the United Nations Environment Programme, nearly 17 million barrels of crude oil are consumed in the production of beverage bottles worldwide every year, 13 million tons of plastic waste flows into the ocean every year, and about 15 million marine creatures die from plastic waste. One million beverage bottles are sold every minute in the world, and it takes 450 years for plastics to decompose in the natural environment.

　　Are the plastic bottles we throw away really useless? What kind of life course will a plastic bottle go through after it leaves the consumer? A few days ago, we visited Yingchuang Renewable Resources Recycling Co., Ltd., located in Shunyi District, Beijing, and felt the process of beverage bottles from discarding to rebirth.

　　Put an empty plastic bottle into Yingchuang’s H-31 intelligent recycling machine for beverage bottles, only to see the bottle turn several times in the recycling machine and then fall into the recycling bin. However, if an unfinished bottle is put into the recycling machine, it will not fall into the recycling bin. It turns out that this recycling machine can sense the weight of bottles. Compressing the recycled empty bottles can reduce the cleaning cost of workers and improve the recycling efficiency.

　　After the recycling is completed, users can choose to donate or receive coupons and get rebates. When choosing coupons, they don’t need to download the mobile phone application, and the whole process from returning bottles to redeeming points can be completed through WeChat applet.

　　Consumer participation ends here. However, for the plastic bottle in the recycling machine, this is only the first step in its regeneration journey.

　　Plastic bottles entering the recycling machine will be compressed, waiting for more bottles to fill the recycling bin. The staff of Yingchuang told us that whether the recycling machine is working normally and whether the recycling bin has been filled can be sent back to the background in real time. According to the situation of each recycling machine, the backstage can arrange the optimal treatment route for the cleaning personnel nearby.

　　After that, these plastic bottles will be transported to the sorting station for sorting and packaging, and pressed into bottle bricks to enter Yingchuang Recycling Factory.

　　The bottle body can be recycled. How to recycle the label on the bottle cap and bottle? Can labels and bottle caps be made into bottles after recycling?

　　It turns out that a beverage bottle can be divided into three parts. Among them, the bottle body can realize the "bottle-to-bottle" level conversion, and after recycling, it is still food-grade and can also hold drinks. But bottle caps and labels are not. After Yingchuang automatically sorts the recovered bottles, it removes the caps and labels and handles them in other ways. Finally, the PET (poly (terephthalic acid) plastic) beverage bottles enter the recycling plant.

　　Yingchuang’s staff also showed us several kinds of crystal particles, all of which were broken and cleaned beverage bottles. These glittering and translucent plastic fragments are restored to cleanliness, waiting to be processed into recycled polyester chips or directly reborn.

　　At present, the annual consumption of plastic bottles in China exceeds 5 million tons, about 200 billion, ranking first in the world. Yingchuang processes 50,000 tons of waste PET beverage bottles every year, which is equivalent to saving 300,000 tons of oil.

　　The story of a bottle will continue.

　　Can harmful waste become harmless?

　　Kitchen waste can be converted into biogas and burned to generate electricity, and plastic bottles can be crushed and reused. What should we do with the expired drugs, remote controls and other discarded batteries in people’s small medicine boxes?

　　In June 2016, the new version of the National Hazardous Waste List was released, and family expired drugs were impressively listed. Once the drug expires, it will not only lose its therapeutic effect, but also be harmful to the human body. However, if the expired drugs are discarded and burned together with ordinary domestic garbage, it will seriously harm the environment, resulting in excessive antibiotic components in soil and water.

　　Expired drugs are very harmful, but the treatment of expired drugs in China is insufficient. The White Paper on the Recovery of Family Expired Drugs in China shows that about 78.6% of families in China have "small medicine boxes", and more than 80% of them don’t have the habit of cleaning them regularly. Few people know how to deal with family expired drugs correctly.

　　Even though there are many difficulties in recycling expired drugs, you have not given up. Since 2004, Guangzhou Pharmaceutical Group Co., Ltd. has been holding expired drugs recycling activities from March to August every year. At present, GPHL has recovered more than 1,500 tons of expired drugs.

　　The recovered expired drugs will be sealed and packaged, labeled, indicating the recovery point, handler, recovery unit and recovery date, transported to the abandoned waste treatment plant by the dangerous goods transport vehicle, treated by professionals, and put into the pyrolysis gasification incinerator for harmless treatment.

　　It has basically become a consensus that waste batteries and waste electronic products belong to harmful waste. E-waste only accounts for 2% of the global landfill waste, but it accounts for 70% of all hazardous waste, which seriously harms the environment. But at the same time, waste electronic products may turn waste into treasure. The International Telecommunication Union estimated that the value of gold thrown into the waste heap in 2016 was $21.5 billion and the value of copper was $13.9 billion.

　　The Implementation Plan of Extended Producer Responsibility System issued by the General Office of the State Council pointed out that producers should be responsible for the resource and environmental responsibilities of their products throughout their life cycle. In other words, for the manufacturers of electronic products, we should not only manage the production links, but also grasp the links of battery recycling.

　　Now, the power batteries eliminated from new energy vehicles can be applied to other fields in a step-by-step way to give full play to their use value. However, batteries whose performance drops below 30% have to be dismantled and regenerated to extract precious metals by chemical means.

　　The action of garbage sorting has gradually become a trend, and the garbage sorting industry is gradually forming a complete industrial chain.

　　Zhang Yi, chairman of the Environmental Protection Alliance of Strategic Emerging Industries in China, said: "Although developed countries started waste sorting earlier than us, no country has raised waste sorting to such a high level like China." According to Zhang Yi’s estimation, in the next 10 years, the industrial scale driven by garbage classification will be about 400 billion yuan.

　　China’s garbage sorting industry is gradually maturing. The life journey of garbage shows us that the garbage sorting industry is not only a public welfare undertaking to protect green water and green mountains, but also brings a blue ocean of commerce, allowing us to see the Jinshan Yinshan in garbage. (Zhang Pengyu Cao Yingyue)

Behind the flood of "Little Yellow Man" in the comment area is a hidden illegal drainage industry chain.

People who regularly brush Weibo may have this worry: in social software such as Weibo, WeChat and QQ, many "movie sellers" drain illegal websites by commenting, paying attention and sending private messages, and the indecent content they send has become "psoriasis" in the online world.

Nowadays, the behavior of "selling movies" has been restricted.

After the rectification in Weibo, the crackdown on internet piracy was even more severe. On June 12th, Weibo set a rule of paying attention to seven days before commenting, and said that this measure was aimed at cracking down on illegal websites and conducting illegal content related to pornographic video transactions. This has limited some users’ experience, and also made some publishers of illegal advertisements selling films and medicines by inducing words in popular Weibo comments lose an important drainage place.

With the attack of various platforms on this kind of advertising behavior, the means of "selling film brothers" are constantly being refurbished, and the victims of these malicious drainage behaviors are often ordinary users who want to clean up the network environment and curious minors who are ignorant of the world.

A survey by the Beijing News Shell Finance reporter found that behind the flood of "Little Yellow Man" in the comment area, there is a hidden illegal drainage industry chain. After the review in the comment area is becoming stricter, such malicious drainage behavior may also appear behind the private letters, concerns and even praises of ordinary users.

"The drainage industry is actually a marketing black product, which is characterized by making extensive use of the identity information of normal citizens, bypassing the platform restriction rules, sending a large number of drainage contents such as pornography, politics and vulgar advertisements, and finally realizing them in the form of fraud." Li You (a pseudonym), an expert in anti-fraud lab, told the reporter.

After the "selling films" in the comment area was severely punished, the censorship was evaded by means of "building in the middle of the building"

"Think about it, why are you being targeted by film sellers?" This sentence used to be a sentence that netizens often teased in Weibo’s comments, but once the comment area was really flooded with all kinds of pornographic comments, most netizens would feel uncomfortable.

Netizen "Ginger Ginger Ginger" sent a complaint to Weibo in May, saying that his Weibo was "targeted by pornography" and posted many malicious comments in his comment area. Many netizens said that these movie sellers were "everywhere". As long as Weibo has traffic on the hot search, the comment area will often attract such drainage comments.

The reporter found that many porn reviews use keywords such as "father-in-law’s daughter-in-law" and "long-legged green tea biao" to attract users to click. After clicking, they often jump to pornographic websites and ask users to pay.

At present, although Weibo strictly controls comments in the comment area, many "film sellers" can still take advantage of the loopholes.

On June 27th, Shell Finance reporter of the Beijing News found the trace of "selling films" in a popular Weibo comment area, but its method of "selling films" became quite complicated: firstly, it did not comment directly under the popular Weibo, but replied in the top comments in the popular Weibo comment area, which belonged to "comments in comments", and the comment content was a picture of a semi-naked beauty with the words: the original picture was at @XXX. The reporter clicked on the Weibo user of this comment @, and found that there were large-scale pornographic pictures on his homepage, with a website link attached. Clicking on the website link found that he jumped to a "movie selling" website, indicating that 28 yuan could buy pornographic movies, and provided the payment method of Alipay. At this point, the process of draining to pornographic websites through Weibo comment area is completed.

The reporter of Shell Finance found that, influenced by Weibo’s "strike hard" pornographic comments, the "movie seller" could only comment on the published comments, and the drainage was realized in the form of "building in the building". The process was more tortuous than the previous direct reply to indecent comments in hot search, which increased the cost of malicious drainage, but it also showed that no matter how the platform was banned, violators could always find ways to counter the ban rules of the platform.

"The platform and malicious drainage of black products are in the process of dynamic confrontation." Li You told the reporter, "If the rules are too strict, it will be deleted by mistake, which will affect the user’s experience. It is unrealistic to completely ban the drainage of gray and black products, unless everyone can’t comment. However, if the rules are relaxed, they will be invaded by gray-black products, and they can only gradually increase the drainage cost of gray-black products, so that they can retreat. "

Comments and private messages frequently show toner drainage "robots", and the price ranges from 1 yuan to 388 yuan

Weibo is not the only battlefield for film sellers. Many social apps, such as QQ, WeChat, Momo, Tik Tok, etc., are active places for these movie sellers.

Some netizens reported that there are always comments from strange users in their comments posted on QQ, and the comments are usually random words, but if you click on the portrait of the strange user, it is usually "a hole in the sky".

On June 23rd, Shell Finance reporter clicked on the comment of a QQ user who "looked at my head first", and found that if he entered the user’s space, he would jump to the document analysis page of Tencent weiyun, but the document content only had a picture with a QR code. If he scanned it, he would jump to another picture with a QR code and explicit content, and then he would jump to a pornographic website. If he wanted to watch the website video, he would have to pay a fee of 6 to 25 yuan.

A black production studio, which claims to provide "toner drainage on all platforms", said that it can provide drainage service at the price of one person in 2 yuan, but only on the micro signal provided by reporters. "If the direct website address is easy to be blocked, we will first drain the fans to your micro-signal or QQ number through words, and then drain them by sending private messages."

Shell Finance reporter found that almost all of these drainage studios use machine scripts to send private messages in batches. On June 26th, the reporter found a number of "studios" engaged in drainage services by searching for related keywords, and some studios also sold scripts of "drainage robots" part-time. These scripts involved many platforms such as WeChat, Weibo, QQ, Toutiao, Tik Tok, Momo, 58 Tongcheng, Jiji.com, Meipai and Soul, and the prices ranged from 1 yuan (single platform) to 388 yuan (multi-platform package price).

For investigation, the reporter bought a set of "customized drainage scripts" from a merchant at a price of 35.2 yuan, including 22 platforms including Himalayan, WeChat, Tik Tok, Meipai, Weibo and Tantan. After opening the script, the reporter found that its "function settings" include seven functions: video comment, fan private message, fan attention, comment private message, comment concern, comment praise and friend private message. On this page, users can manually input comment speech and private message speech, in addition, they can also make routine settings such as sending pictures, repeating sending, adding attention, and double-talk speech, and can also screen men and women.

In this regard, Fang Chaoqiang, a lawyer of Beijing Yingke (Hangzhou) Law Firm, told the Beijing News reporter that the behavior of diverting users from different platforms to micro-signals through speech induction involves at least false advertisements. "If this behavior is ultimately sold as legitimate goods, it is suspected that marketing methods are illegal. After all, this is a false advertisement. If you sell obscene articles or commit fraud, then those who provide drainage services should also be arrested as accomplices, because even if it is only a commercial entrustment relationship, it also provides business cooperation, which plays a role or even a major role in the spread of obscene articles. "

How to manage the malicious external chain after jumping against the platform ban for many times?

Shell Finance reporter noticed that whether it is comments, private letters or concerns, the inevitable process of draining from a formal social platform to an illegal website is to jump to the outside chain, which often becomes the key place for the platform to attack, so many black and gray products do not hesitate to fight against the ban by jumping many times. As mentioned above, the whole process of draining to an illegal website through QQ avatar jumped three times before "getting into the business".

"There is no way to do this." In an exchange forum of black and gray products on the external network, a practitioner of black and gray products said, "In the early days, H5 links can be directly sent for drainage, and (pornographic) APPs also encourage users to recommend downloads through WeChat QQ, so as to pull new drainage, but later we found that the supervision of the platform is getting stricter and stricter. If you directly send external links to download the app or website address, it will be directly banned by WeChat, so it is increasingly difficult to do drainage on the regular platform."

Zhong Guangjun, director and security expert of WeChat Security Risk Control Center, told the reporter that the external chain includes card links and picture QR codes in the form of presentation. "According to the" WeChat External Link Management Specification ",we divide the standards of violations into 19 categories, including common induced sharing, vulgar spam advertisements, praise collection, fraud and so on. Since January this year, we have dealt with more than one million illegal external chains that have been confirmed by evidence. The overall number of illegal external chains has decreased by 35%, the links of induced sharing classes have decreased by 40%, and the red envelope fraud category has continued to decline by 60%. "

"Our vision is to hope that WeChat friends circle and WeChat chat are places to share life bits and pieces, but some black and gray places just make a fuss about using external links to induce users to share and spread. These illegal external links often contain some malicious content such as junk marketing, vulgarity and fraud, which seriously undermines the normal experience of our normal users and even affects the healthy ecology of the platform. In addition, such a large number of illegal external chains have extended a series of black and gray industries. For example, in order to avoid the security strategy and crackdown needs of WeChat, illegal external chains need to reserve a large number of URLs and a large number of network domain names, which not only seriously harms the WeChat platform, but even affects the development order and norms of the entire Internet. " Zhong Guangjun said.

Shell Finance reporter noted that in order to crack down on illegal website drainage, Weibo has also upgraded its technology. A few days ago, Weibo announced that there were many illegal contents in Weibo’s comments recently that drained illegal websites outside the station and traded pornographic videos. The station centralized and quickly dealt with this kind of Internet illegal activities, and at the same time triggered a fierce confrontation between illegal organizations and Weibo’s security measures. In order to effectively curb the harassment of Internet piracy on platforms and users, Weibo will further upgrade its technology identification system. At the same time, Weibo has launched a special rectification campaign for malicious marketing accounts for two months. Only from June 12th to 18th, Weibo disposed of more than 80 marketing tubas and 210,000 pornographic and vulgar trumpet.

"It can be seen that malicious traffic actually contains a lot of problems. I feel that it is not enough to rely solely on the work of an Internet company or network platform or rely on the crackdown of the competent authorities. Building a clear network environment requires not only our large network system, but also the participation of Internet platforms, ordinary users, and multiple regulatory authorities and competent authorities in social co-governance." Zhong Guangjun said.

Beijing News Shell Finance Reporter Luo Yidan Editor Li Weijia Proofread Junyan Zhang