Eating dry and squeezing clean, three-dimensional planting and breeding, and everyone's participation - Panjin, Liaoning, expands the "no waste" road


  Liaoning Panjin is located in the Liaohe Delta, where the Liaohe Wetland has given birth to the famous red beach.

  In recent years, Liaohe Oilfield has transformed abandoned mines into “green water and lush mountains” through the construction of “no-waste oil fields” and “no-waste mines”; the ecological model of “rice, crab and bean symbiosis” has been widely used, and livestock and poultry manures have been comprehensively utilized on the spot and nearby. Gradually realize it, and build an agro-ecological circular development model; citizens become participants in a "no-waste city", and "Internet +" helps to classify domestic waste... Panjin has embarked on a new path of ecological priority and green development.

  Make every effort to create a "no-waste oil field"

  At the beginning of March, in the conference room of the Wayi Union Station of the Jinhai Oil Production Plant of PetroChina Liaohe Oilfield, a few golden fish were swimming happily in the fish tank, and the water used for fish farming was collected from the last pass of sewage biochemical treatment in the station.

  As a key project of Liaohe Oilfield, the wastewater biochemical treatment project of Wayi United Station has been under construction for 26 months. At the end of 2021, the main project will be completed and put into production. It has become the first three-stage treatment process of anaerobic biochemical, aerobic biochemical and activated carbon adsorption in Xiaowa Oilfield. After the expansion, the sewage treatment system can treat 8,000 tons of sewage every day, which effectively relieves the sewage treatment pressure of Xiaowa Oilfield and is of great significance to the development and production of the oilfield and the ecological environment protection.

  "Look, this cup of water is obtained after the sewage has gone through 10 processes in the system. The treated sewage is compared with the mineral water, and it is difficult to distinguish the difference with the naked eye." Deputy of the Gathering and Transportation Brigade of Jinhai Oil Production Plant of Liaohe Oilfield Wu Bin'an, the team leader, pointed to two bottles of water and said that since the trial operation of the project for three months, the water quality test parameters of each section are normal, and the production operation is safe and stable.

  The "ecological fish tank" of the Liaohe Oilfield Wayi Union Station has become a business card of the green ecological project of the Jinhai Oil Production Plant, and the construction of "no-waste oilfields" has also achieved phased results.

  Liaohe Oilfield is fully implementing the "mud does not land" process in the drilling process.

On the one hand, we will do our best to control the source and reduce the amount of oily sludge;

How exactly is this done?

  The relevant person in charge of the Drilling and Production Engineering Technology Department of Liaohe Oilfield explained that the first is to strengthen the classified collection, storage and transfer of oil sludge on the ground, avoid mixed disposal with garbage, reduce the total amount of oil sludge and reduce the difficulty of treatment; "Wellbore control technology" as the main, "surface control technology" supplemented by the underground operation cleaning operation technology system, basically realize the oil and water out of the well without landing; the third is to continue to increase the research on the upgrading of sewage treatment system, targeted promotion of "no dosing" Sewage treatment technology” to reduce the production of scum and oil sludge from tank cleaning; fourth, increase the closed cleaning to reduce the amount of oil sludge produced on the ground.

  "In addition, it is necessary to accelerate the application of low-cost treatment technology for oily sludge, basically realize on-site reduction of oil sludge in oil production plants, centralized treatment of scum and tank-clearing oil sludge in different regions, and achieve effective recovery of oily substances. Standard disposal of the remaining solid phase." said the person in charge.

  Build an agro-ecological cycle

  On March 1, Guo Kaizheng, secretary of the Party branch of Zhangjia Village, Taiping Street, Panshan County, Panjin City, led the villagers to prepare for spring ploughing.

  Based on the "rice and crab symbiosis" model of "two uses in one place, two cultivation in one water, and two harvests in one season", Panjin has realized the three-dimensional ecological planting and breeding of "growing rice in the fields, raising crabs in water, and growing beans in the ridge".

"Under the 'rice-crab-bean symbiosis' model, the production of rice is not reduced, the crabs are of high standard, and the beans on the ridge are also fragrant. Our people's money bags are also bulging." Guo Kai said.

  Not only the ecological model of "rice, crab and bean symbiosis", but Panjin is realizing the comprehensive utilization of livestock and poultry manure on the spot, and constructing an ecological agricultural cycle of "rice planting - livestock and poultry breeding - organic fertilizer production" in the county (region) area. development model.

  In Panjin Heyuan Breeding Development Co., Ltd., located in Duanjia Village, Shaling Town, Panshan County, Panjin City, the company's manager Yu Fengling is discussing with technical staff the technical process of resource utilization of livestock and poultry manure.

  "Collect livestock and poultry manure and straw and mix them with fermented bacteria in a certain proportion, adjust the water transfer and ferment, after three to four times of overturning fermentation, test and add the required raw materials and functional bacteria, after four months of carbonization screening, Mixing and other packaging and storage." Yu Fengling said that the use of livestock and poultry manure to add straw fermentation organic fertilizer has been well received by users in the cultivation of Chinese herbal medicine, and the amount of use has increased year by year. The effect of increasing production and income.

  "This has a good economic effect." Yu Fengling said, for example, 1 ton of organic fertilizer can consume 4 cubic meters of livestock and poultry manure, reducing the pollution caused by livestock and poultry manure to people and the environment. Reduced use of chemical fertilizers.

1 ton of chicken and duck manure is equivalent to 55 kg to 82 kg of ammonium sulfate and 25 kg to 28 kg of organic matter.

  About 20,000 tons of manure produced by raising dairy cows in Panjin Jinchang Animal Husbandry Co., Ltd. provides high-quality raw materials for the biological organic fertilizer branch of Panjin Jinchang Animal Husbandry Co., Ltd.

  Wang Yongbao, director of Panjin Jinchang Animal Husbandry Co., Ltd., said that the technology of manure recycling has good social benefits.

In terms of improving the safety of agricultural products, it can promote the replacement of chemical fertilizers with organic fertilizers in planting bases in the region, which can ensure the safety of agricultural products while increasing the production of agricultural products.

Through the implementation of the special treatment project for livestock and poultry farmers, the resource utilization of manure can achieve the effect of reducing the use of pesticides and chemical fertilizers, changing the long-term situation of low quality of agricultural products caused by excessive use of chemical fertilizers.

  "In terms of ecological benefits, it can improve the productivity of arable land." Wang Yongbao said that livestock and poultry manure is rich in organic matter, trace elements and nitrogen, phosphorus and potassium, so livestock and poultry manure is an effective raw material for making fertilizers.

The livestock and poultry manure is made into organic fertilizer, and after being applied to the farmland, it can help to improve the soil structure, increase the organic matter content, and ensure the stable and high yield of crops.

  Public participation in environmental governance

  To build green Panjin, not only enterprises but also citizens take action.

  93.78%!

This is the "utilization rate" of residents in Area F of Tiange Community, Dawa District, Panjin City participating in garbage classification.

Many residents gained a lot of points by participating in garbage classification, and got the rice, seasonings, daily chemicals and other supplies that the family needs daily.

These points can be obtained by residents through the Internet such as APP and WeChat port.

  Zhao Rong, deputy director of the comprehensive resource utilization center of Panjin Jinghuan Company, introduced that the center carries out garbage classification in four areas of Panjin, and sets up demonstration communities in the four areas. Through the publicity and guidance of staff, Panjin City participates in garbage classification The utilization rate is 83.38%.

Residents can obtain points by sorting recyclable and perishable wastes, which can be exchanged for daily necessities such as rice, noodles, and oil.

  How are residents' points achieved through the Internet?

Zhao Rong said that the "smart hardware - resident account - Internet platform" model was adopted to set up smart perishable garbage cabinets and waste material delivery and recycling cabinets that can collect data in various communities in the city, and establish a comprehensive service platform for intelligent garbage classification. Door-to-door recycling, reward points, commodity exchange” and other functions, realize real-time reward feedback of residents’ delivery behavior and real-time query of garbage classification data.

The information system of the garbage intelligent classification system, which includes the management system, WeChat port and recycling APP, etc., and establishes ecological accounts for residents through QR codes and ecological cards, and realizes the functions of user inquiry, points exchange, and large-scale reservations for residents. .

  It is worth noting that compared with other "waste-free cities" in the country, Panjin still has some bottlenecks and deficiencies, and there is still much room for improvement.

  Yin Tao, deputy director of the Panjin Ecological Environment Bureau, admitted that the integration of Panjin's "no-waste city" construction with economic development and green development is not close enough.

The effect of the construction of "no-waste cities" in promoting green development is not yet significant. The problem of large amount of industrial solid waste is still unresolved, and more efforts are needed to improve the comprehensive utilization rate.

In addition, the utilization of agricultural waste also has bottlenecks such as the low level of market-oriented operation.

  Faced with bottlenecks and deficiencies, Panjin did not press the "pause button", but turned on the "acceleration" mode.

  "On the one hand, further strengthen the construction of institutional, technical and market systems. On the other hand, focus on project support, realize the reduction and high-value treatment of industrial solid waste, and develop the circular economy in an orderly manner." Yin Tao said that Panjin will Explore the organic combination of "no-waste city" construction and carbon neutralization work, establish and improve a green, low-carbon and circular development economic system, and expand the depth and breadth of "no-waste city" construction.

Our reporter Wen Jicong