Entering summer, all kinds of seasonal vegetables on the table make our life more delicious. However, the other side of the abundance of vegetables is the large amount of waste vegetable leaves. According to the reporter's understanding, in Songming County, Yunnan Province, according to the needs of vegetable refrigeration and sales, the production rate of waste vegetable leaves per ton of vegetables is about 20% to 35%. How to deal with these "rotten leaves"? Throwing it on the roadside is garbage, but using it is a resource. How to make "rotten vegetable leaves" bear ecological fruits? There are many articles in it.

Organic fertilizer waters out roses

"Rotten vegetable leaves - organic fertilizer - roses", such an agricultural circular economy really made reporters curious.

"How about roses grown with organic fertilizers?" In the face of the reporter's question, Xinsuruntu Environmental Protection Technology (Kunming) Co., Ltd. (hereinafter referred to as Xinsuruntu Company) has devoted itself to the research and development of "Yunruntu" biogas slurry fertilizer. ) related person in charge Li Jing sent reporters several photos of the horse farm rose garden one after another. The horse farm rose garden is the biogas slurry fertilizer flower planting test base selected by the new Surun soil company after the on-site inspection. After more than half a year of testing, 30 acres of roses ushered in the flowering period in May.

The picture shows the roses picked from the horse farm rose garden.

It can be seen from the photo that a large bundle of freshly picked roses is placed on the wet ground, looking more and more delicate. The flowers are ready to be sent to the Dounan Flower Market for sale.

"Now is the rose picking period. Since the picking has not yet ended, the benefits cannot be calculated. But what is certain is that after using biogas slurry fertilizer, there are fewer diseases and insect pests this year, the planting cost has also dropped, and the roses are in better condition than before. Next, We will carry out precise control of biogas fertilizer for roses, further increase the yield per mu, and achieve both increase in income and production." The grower of the horse farm rose garden told reporters happily.

How did the biogas slurry fertilizer that benefit growers come from?

Li Jing said: "The raw materials for the production of biogas slurry are organic wastes generated during agricultural production and transportation. We return the nutrients from agricultural wastes to the agricultural production system to supplement the nutrients lost in the production process, thereby increasing the amount of cultivated land. production capacity and sustainable farming capacity.”

It is understood that in October 2017, Xinsu Runtu Company completed a comprehensive utilization of waste fruits and vegetables and a biological natural gas project and an organic fertilizer project in Dayatang Mountain, Qingshuitang Village, Flower Demonstration Park, Xiaojie Town, Songming County and put it into use. Songming Modern Agriculture Environmental Protection Co., Ltd. was established to carry out unified removal and transportation of discarded vegetable leaves. At present, this project can process about 300,000 tons of waste fruits and vegetables every year, and produce 3 million cubic meters of bio-natural gas and 12,000 tons of solid organic fertilizer every year. This project is a supporting project for agricultural processing and environmental governance in Songming County, and was included in the list of "Four Hundreds" key construction projects in Yunnan Province in 2018.

Li Jing introduced: "The production process of the project uses the biogas produced by the dry anaerobic fermentation system to be purified by membrane method to produce biological natural gas. The solid fertilizer produced after the solid-liquid separation of the dry anaerobic fermentation system is returned to the field through agricultural promotion. This project Make the waste fruits and vegetables full resource utilization, form the basic agricultural circular economy model of 'planting industry-biogas-organic fertilizer-bio-organic planting' circular development, truly achieve 'turn waste into treasure, take it from the field, use it in the field' '."

The person in charge of the Songming Branch of the Kunming Ecological Environment Bureau (hereinafter referred to as the Songming Environmental Branch) told this reporter: "Vigorously developing the agricultural circular economy is of great significance to Songming County, which is known as the 'granary in central Yunnan'. The ecological environment of Ming County is faced with the problems of severe water pollution prevention and control work, numerous enterprises and industries, heavy agricultural non-point source pollution prevention and control tasks, many cold chain enterprises, and lagging sewage treatment facilities construction. With the continuous development of Songming County's economy and society, efforts are made to solve These problems have become the focus and difficulty of Songming County's ecological and environmental protection work."

In order to ensure the safety of the surrounding groundwater and Niulan River water quality, and effectively protect the normal production and living environment of residents, Songming County adheres to the working principle of source control and combination of dredging and blocking, and effectively promotes the comprehensive utilization of waste fruits and vegetables.

The Dangerous Story Behind "Rotten Vegetable Leaves"

"In recent years, with the continuous development of the greenhouse planting industry in Songming County, the cold chain logistics industry has grown rapidly, and the corresponding ecological and environmental protection problems have become increasingly prominent, especially the disposal of discarded vegetable leaves. At present, Songming County has 34 cold storage enterprises of different scales have been built, with a total of more than 370 cold storages. According to the calculation of the generation rate of waste vegetable leaves per ton of vegetables being about 20% to 35%, the cold storage enterprises within the jurisdiction of Songming County will produce waste vegetable leaves every day. About 3,000 tons." The person in charge of the Songming Environmental Branch told this reporter.

How to deal with a large number of discarded vegetable leaves? In order to save costs, many enterprises directly dump it on the roadside and river embankment, which produces a large amount of leachate, which directly pollutes surface water and groundwater.

In order to reduce pollution and improve the quality of the living environment, Songming County has taken a variety of measures. In addition to introducing projects such as Xinsu Runtu Company to implement fruit and vegetable waste resource utilization projects, it also encourages cold storage companies to build safe and effective refrigerated warehouses on their own or jointly with three or five companies. Waste vegetable leaves disposal facility, collect waste vegetable leaves for harmless disposal. At the same time, we continued to carry out a special campaign against illegal dumping of discarded vegetable leaves to implement source control.

It is worth mentioning that, at present, Songming County has basically realized the harmless disposal of waste vegetable leaves in cold storage within its jurisdiction.

Freezing three feet is not a day's cold. Since Songming County launched a special campaign in 2019, a total of 16 cases of illegal dumping of discarded vegetable leaves have been found, and 28 cases of environmental violations in cold storage and individual dumping of discarded vegetable leaves have been investigated and punished, with a cumulative fine of 3.485 million yuan.

Speaking of the law enforcement work in recent years, the relevant law enforcement officers of the Songming Branch of the Kunming Ecological Environment Bureau still remember many experiences.

"One night a few years ago, the Songming Branch organized a joint law enforcement officer to conduct night duty on the Junmachang section of the Old Kunqu Expressway as usual to crack down on the illegal dumping of discarded vegetable leaves. In the middle of the night, six large trucks began to dump the discarded vegetable leaves. Driving Ignoring the warnings of the law enforcement officers, the officers forcibly punched the card and escaped successfully. The Songming Branch and the County Public Security Bureau carried out a series of follow-up investigations, and it was finally confirmed that the perpetrators transported the discarded vegetable leaves from some cold storages in a certain place in Kunming several times overnight to Songming. The old Kunqu Expressway Junmachang road and remote areas are dumped wantonly, seriously polluting the environment."

Careful planning, covering the vehicle number plate with towels, gloves and sludge, commanding with a walkie-talkie... These scenes make it hard to imagine the story behind the "rotten vegetable leaves".

The law enforcement officer continued: "When these people fled by car, they spilled discarded vegetable leaves on the urban expressway, causing law enforcement inspection vehicles and passing vehicles to slip out of control after crushing the discarded vegetable leaves, and hit the isolation fence, causing two injuries. The current danger of car damage. They run all the way, and use dangerous ways such as running red lights, double-teaming law enforcement vehicles to cover each other, forcibly punching cards when entering and exiting expressway ramps, frequent interspersed lane changes, etc., resulting in road congestion and danger.”

These perpetrators were eventually severely punished by the law, and were sentenced to two and a half to four years in prison according to the crime of endangering public safety. This case has formed a strong deterrent to the illegal dumping of discarded vegetable leaves in Songming County. Since then, no large-scale batches of discarded vegetable leaves have been dumped in Songming County.

The application rate of organic fertilizers in my country is only about 10% of the sown area, and there is a lot of room for development.

"Bazi area of Songming County ranks 7th in Yunnan Province and 2nd in Kunming City. It has unique advantages in the production of fruits and vegetables in terms of terrain, climate and hydrology. Tomatoes cultivated with 'Yunrun Soil' organic fertilizer Vegetables and vegetables, the 22nd China Environmental Expo held at the Shanghai New International Expo Center last year received attention and praise from all walks of life." Li Jing said proudly.

Since 2019, Xinsu Runtu Company has applied the "Yunruntu" water-soluble fertilizer with large amounts of elements produced from discarded vegetable leaves to the planting of vegetables, fruit trees and other crops, and replaced chemical fertilizers with organic fertilizers. Some achievements have been made in promoting crop growth and improving product quality. This is a beneficial exploration to make the waste vegetable leaves be used as a resource.

At present, the country has put forward clear requirements for ecological civilization construction and agricultural "two high and one excellent" and sustainable development, and the society's demand for energy saving and consumption reduction, consumption of green food, etc. is also increasing. , to strive to be the vanguard of the national ecological civilization construction, the local organic fertilizer industry has ushered in new opportunities for development.

It is reported that the application rate of organic fertilizers in developed countries has reached 45% to 60% of the sown area, while in my country it is only about 10%, indicating that the production and promotion of organic fertilizers has a very broad space. Reducing the amount of chemical fertilizers and increasing the amount of organic fertilizers can have the effect of "multiplying with one stone": reducing agricultural non-point source pollution, improving soil compaction, increasing soil fertility, and achieving sustainable development.

In this context, the answer is clear, whether to choose to discard and dump the waste vegetables and leaves to pollute the environment, or choose to turn waste into treasure and recycle.

Therefore, the person in charge of the Songming Environmental Branch told reporters: "In order to consolidate the effectiveness of our work, in addition to strengthening daily supervision and intensifying investigations, we attach great importance to strengthening environmental protection publicity, and publicize and explain the newly implemented "People's Republic of China" to all cold storage enterprises. The Law on the Prevention and Control of Environmental Pollution by Solid Waste", let each cold storage company know the legal responsibility and consequences of solid waste pollution to the environment, and earnestly fulfill the main responsibility of environmental protection. Dumping directly from the field, this part belongs to farmland solid waste and is supervised by the agricultural and rural departments. If it is dumped by a cold chain logistics enterprise, it will be supervised by the ecological environment department, and the waste treatment fee will be doubled or tripled for random dumping. The following fines will be confiscated, and the illegal income will be confiscated. If the disposal fee is less than 100,000 yuan, the disposal fee will be calculated as 100,000 yuan. The purpose of our strengthening publicity is to prevent ordinary people from wasting resources and polluting the environment because they do not understand the law. It also avoids unnecessary consequences for itself.”