"Small cycle" makes the "white pollution" in the field turn waste into treasure

Workers carried out residual membrane recovery at the agricultural film -oriented recycling station in Qujing City, Yunnan Province.

Agricultural film production and processing plant located in Malong District, Qujing City, Yunnan Province.

Speaking of "white pollution", many people first think of plastic bags common in life. But in fact, the agricultural film in the field is also a major culprit for "white pollution".

my country is the country with the largest agricultural film in the world. Because the main component of agricultural membranes is polyethylene polymer compounds, it is like a double -edged sword -while helping agricultural yield increase and income, it also causes great pollution to farmland.

As a result, a realistic problem is in front of people: how to enjoy the convenience of agricultural film to agricultural development while enjoying the environment of agricultural development and reducing its damage to the environment?

Recently, a reporter from China City Daily came to Qujing City, where agricultural production indicators ranked first in Yunnan Province, looking for agricultural membrane pollution solutions.

Pay recovery and mobilize farmers to participate in enthusiasm

In the early autumn, Yunnan was high in autumn. In Wangjiazhuang Town, Malong District, Qujing City, Yunnan Province, a reporter from China City Daily saw that the teasing tobacco leaves were large and upright, complexing with the blue sky and white clouds; in the field, farmers were busy stacking the tied tobacco leaves in the courtyard neatly in the courtyard. Essence

Yunnan Province is a large tobacco planting household. Although the tobacco scenery is pleasant today, in the past, the abolition film was the heart disease of farmers.

A tobacco farmers in Wangjiazhuang town raised the agricultural film "love and hate". He told the China City News reporter that the agricultural film contains ground membranes and shed membranes. On the farmland, it has the effects of improving temperature, maintaining soil, and suppressing weed growth. However, when the residual membrane accumulates in the soil, it not only affects the breathability and permeability of the soil, it is easy to cause soil secondary saline to alkalize, but it can also decompose toxic substances and cause pollution.

"7.5 kilograms of agricultural film per acre. After harvest, the residual film may be abandoned in the field, or the wind is blown to the back of the house and the field of the field, which not only affects the appearance of the village and village." Smoke farmers said.

A study released by the Institute of Environmental Research in South China Normal University showed that 18.6%of my country's agricultural membranes stayed in farmland each year, and 4,329 tons of plastic fragments entered the river network and remitted into the ocean throughout the year.

Due to the harmfulness of the residual membrane, relevant state departments and many provinces and cities have issued documents to accelerate the treatment of plastic agricultural membrane pollution and improve the level of resource utilization of waste plastic agricultural membranes.

“将农膜纳入社会塑料回收大循环是一种解决方案，但由于农膜价值低、分散广的特点，其回收一直是个难题。”业内专家认为，农膜本是单一品类单一材质，进入大After the cycle, it is not economical to face the fate of sorting and classifying with many plastics. If you can build a "small cycle" belonging to the agricultural film itself, let it "where to go back and forth", then the problem will be solved.

The turnover starts with a cyclic recycling operation. In 2014, Yunnan Qujing Tobacco Company and Yunnan Qujing Plastic (Group) Co., Ltd. (hereinafter referred to as Qu Soverell Group) reached a cooperation agreement on the recycling of the residual membrane.

"While signing the agricultural film procurement contract, we also signed a residual membrane recovery agreement to collect the smoke agricultural residual membranes through cooperatives, transport it to the recycling plant, and then recycle the granules from the recycling plant." Lu Bin, general manager of Quzhu Group In an interview with reporters, they said that they formulated the acceptance standards, sampling methods, and acceptance processes of residual membranes, implemented the management measures for recycling and transportation of residual membranes, and guided cooperatives and farmers to pack the residual membranes.

In the process of cooperation with tobacco companies, Lu Bin felt that only by allowing farmers to really benefit can we ensure the sustainability of the recycling work.

Dong Xuekun, the president of Yuemin comprehensive service of Yuemin Yuemin Town, Wangjiazhuang Town told the China City Daily that the cooperatives are supplied to more than 800 tobacco farmers with 96 tons of agricultural membranes each year. In the kg of agricultural film, farmers can get 2 yuan subsidy, and the cooperative can get 1 yuan. Calculated, the comprehensive use cost of some farmers' agricultural film can be reduced by about 20 %. "

Pay recovery has promoted the enthusiasm of farmers to recycle the residual film. It is understood that this model has been promoted in the tobacco planting area across Yunnan. "From 2014, we have recycled about 2,000 tons of residual membranes in tobacco." Said Tu Xia, manager of the marketing department of Quzhu Group.

Zero discharge residual membrane treatment makes "white pollution" turning green resources

The residual membrane is only the first step, and then how to deal with the residual membrane.

In the agricultural land film recycling treatment plant in Yunnan Keye Plastic Co., Ltd. in Malone, a reporter from China City Daily saw a black residual film full of 3 meters high on the size of the size of a football field. Turn out the shovel back and forth, send the residual film into the crusher, and after rinse, squeezing, dispersing, winding, plasticizing, water -cooled particle and other processes, the residual membrane becomes regeneration.

"During the recycling season, 58 trucks came here a day, and 32 tons of agricultural membranes were removed." The staff of the factory area told the China City Newspaper reporter that the core of the recycling treatment and granularity links cannot cause secondary pollution. Based on this, the factory area has built a set of zero -emission remnants treatment system.

At the side of the sewage treatment pool, the China City Daily reporters saw that the yellow sediment water was discharged from the fragmented film and the mud water separator, and the workers were collecting the fragmented film separated from the equipment.

According to the operator, the factory area has built a circular water treatment system for the cleaning of the residual membrane and the cooling of the fuselage. The clear water enters the production system, the sewage flows into the water treatment system, and then the processed sewage enters the production system again. In this way, a circular production environment with completely zero emissions is also achieved, and it also greatly saves water resources. It is worth noting that not only the water can circulate, but even the soil filtered in the water is also useful. The above -mentioned staff said that the soil processed by the water treatment system should be checked regularly. Under the control of the toxicological indicators, the soil can be applied to more fields, such as the raw materials of brick making, and can also be applied to the gardening art. Cultivate the nutritional soil, and can even be used to absorb and clean the spread of nitrogen, phosphorus, potassium in thin film water.

"After the residual membrane is stacked efficiently and reasonably, it is no longer garbage, and it has become the raw materials we can use for the next step of processing." The relevant person in charge of Yunnan Kendi Plastic Co., Ltd. introduced to the China Urban News reporter. The recycled materials made of processing are mainly used as industrial packaging membranes, daily necessities (sheets, coatings, bottles, tanks, barrels, etc.), as well as wires, cable insulation, synthetic paper, etc.

Zou Yukun, deputy director of the Local Affairs Bureau of the Qujing Economic and Technological Development Zone, said in an interview with a reporter from the China Urban News that the establishment of the agricultural film recycling treatment network system has improved the agricultural environment and provided a sustainable sustainable treatment for agricultural pollution sources caused by agricultural membranes. solution.

China City Daily reporters learned from the Qujing Agricultural and Rural Bureau that from 2022 to 2024, Qujing City implemented three years of agricultural pollution prevention and control, promoting the prevention and control of agricultural surface source pollution with the spirit of nail "nails", and accelerating the construction of agricultural ecological civilization. Promote the development of green agriculture.

The area of ​​scale planting can be copied and promoted

The "small cycle" model was promoted to Yuanmou County, Chuxiong and Yi Autonomous Prefecture, Yunnan Province after testing the water in Qujing City.

It is understood that Yuanmou County is one of the demonstration zones in the special agricultural planting of my country, and is known as the "hometown of Chinese winter morning vegetables". In April of this year, Yuanmou Green Yuanguo and Vegetable Co., Ltd. was launched.

"In the past, farmers used the residual membrane to give the residual film directly to the waste station. Now we have given Green Industry Yuanyuan's cooperative farmers higher than the market price recycling policy. At the same time, the local recycling station is selected as our targeted recycling station and paid a certain service fee to ensure timely timely to ensure timely time Recycling accurately, "Lu Bin said.

The recycling car is recycled, the farmers have facilitated, and the recycling policy of high market price benefits farmers. The farmers have received the recycling, and the deposit of the purchase of new membranes next season will be settled, and the enterprise also strives to get the market for the next quarter.

"We also cooperated with the agricultural film dealers to use the agricultural film sales outlets and channels to achieve sales and recycling, and quickly set up the recovery system." Lu Bin said that since 2014, the company has recovered more than 80,000 tons of residues since 2014 The membrane has achieved the production and application of about 20,000 tons of recycled materials, purifying about 1.5 million acres of farmland each year.

Above the practice, this recycling cycle processing scheme is named Par (PostagridulturalRecy-CLE: agricultural cycle regeneration) mode.

"This is a new supply chain cycle model, which realizes the benefits of farmers in the agricultural film market, the targeted recycling processing of agricultural film, standardized production of regeneration materials, and the appreciation of agricultural film regeneration materials to form a cross -loop chain of cross -industry." Industry experts in industry. " Evaluation said.

Zhang Deyuan, an associate researcher at the Macroeconomic Research Institute of the National Development and Reform Commission, believes that the recovery and utilization of plastic pollution, especially waste plastic, has entered the bottleneck period. To continue to develop plastic recycling and regeneration applications, it is inseparable from the joint innovation of upstream and downstream industrial chains.

In this regard, Lu Bin holds the same view. In his opinion, the regeneration materials for agricultural film recycling need to be diverse in application, and more brand manufacturers must be encouraged to participate in it, so as to promote the virtuous circle of the entire system.

The reporter noticed that the "Action Plan for the Tackling Action Plan for Agricultural and Rural Pollution Governance (2021-2025)" released by the Five departments of the Ministry of Ecology and Environment requires that during the "14th Five -Year Plan" period, vigorously promote the mechanization of waste agricultural film, professional recycling, and recycling, Resource utilization, establish and improve the recycling network system, and improve the level of recycling and disposal of waste agricultural membranes.

What do you need to pay attention to when copying and promoting PAR mode? Lu Bin suggested that replication and promotion of a certain scale of planting; for scattered users, the government needs to mobilize them to send the residual film to the designated recycling station; It is hoped that the government will invest in policy support and funding.

"There is no handling of garbage, only if there is no good design and use of good resources, the key is how we design products, use products, and use products." Lu Bin said.

■ China City News Reporter: Zheng Xinyu Wentu

- END -