In the Puding Circular Economy Industrial Park, massive pipelines, resembling a giant serpent clad in green, stretch from the power plant to various factory buildings. The waste heat and steam generated from power production travel through these pipelines, now capable of supporting an entire industrial park. Previously, managing this excess heat posed a significant challenge for the power plant. Today, the Puding Economic Development Zone converts it into high-temperature steam, distributing it to enterprises via a 27-kilometer branch pipeline network. Dozens of companies requiring stable thermal energy—such as those in papermaking, packaging, laundry services, and food processing—have established operations here, drawn by this reliable steam supply.
A city's daily "metabolism" inevitably generates massive amounts of industrial slag, agricultural straw, and construction waste. Where does it all go? Anshun City offers an intelligent solution: value "reconstruction," reintegrating these materials back into the economic bloodstream.
The principle of "utilizing everything to the last drop" extends deep into enterprise production lines. To address the pollution and high cleaning costs associated with post-production wire drawing fluid, Pingba District's Guda Wire & Cable (Group) Co., Ltd. introduced an automatic separation machine. The aluminum powder in the drawing fluid is separated by the equipment, while the drawing oil is cooled and recycled. This "environmental accounting" saves the company 7 tons of drawing oil annually.
In urban streets and alleys, the reach of the circular economy is also expanding. Confronted with waste, Anshun opts to reject traditional "disorderly, scattered, and poor" methods, embracing technology and standardization instead. In Xixiu District, uncontaminated infusion bottles and bags from medical institutions are processed through a professional recycling system established by emerging environmental protection enterprises. These bottles undergo strict disinfection, crushing, and melting, transforming into recycled plastic pellets that ultimately become trash bins and plastic containers for daily use. Construction waste from urban renovation passes through an intelligent sorting system that removes rebar, wood, and lightweight materials; the remaining waste concrete is then made into permeable bricks, relaid in Anshun's squares and parks.
For household recyclables generated by thousands of families, Guizhou Sanyi Renewable Resource Supply Chain Management Co., Ltd. leverages its renewable resource recycling system construction project, making recycling as convenient as online shopping. Residents place orders with a tap on their phones, and new energy logistics vehicles arrive for collection. Inside the full-category sorting center, AI intelligent equipment can accurately identify plastic bottles of different materials and colors in one second. A modern renewable resource recycling network—with online front-end, intelligent midstream manufacturing, and clear downstream destinations—is propelling Anshun's urban waste management toward "digital intelligence."
The vast quantities of kitchen waste produced daily by the city are also gaining a "new life." Specialized collection vehicles transport restaurant grease to Guizhou Hongneng Environmental Protection Energy Technology Co., Ltd. Through a "three-phase separation" system, the previously undesirable grease is broken down and separated. The extracted oil is refined into "crude oil," sold to other regions for processing into fuel; the water is converted into "organic carbon sources," trialed for supply to sewage treatment plants; and the residual solids undergo fermentation to produce biogas for factory heating or are processed into organic fertilizer.
During every autumn harvest, straw burning was once a painful issue for environmental governance. The unstoppable smoke reflected the dilemma of agricultural waste with nowhere to go. Anshun's solution lies in "combining疏导 (guidance) and堵 (blocking), promoting utilization to prohibit burning." By introducing professional processing enterprises, the local area purchases straw from farmers, combining it with distiller's grains and other waste for deep processing into high-quality forage loved by cattle and sheep. This model strengthens the straw brokerage workforce, increases farmers' income, and fills the forage gap for Anshun's substantial beef cattle farming industry, perfectly achieving an ecological closed-loop of planting and breeding cycles within agriculture.
Behind the concept that "everything can be循环 (circulated)" lies Anshun's steadfast commitment to green, low-carbon development. The synergistic use of industrial waste heat and solid waste, the digital-intelligent reconstruction of urban renewable resources, and the ecological cycling of agricultural waste—these vivid facets of the circular economy collectively form the core support for Anshun's construction of a "zero-waste city."
As one of only two cities in the province, alongside Guiyang, included in the national "14th Five-Year Plan" period "zero-waste city" construction list, Anshun's explorations have borne abundant fruit. Data shows that by the end of 2025, the city's comprehensive utilization rate of straw reached over 86%, and the equipment installation rate for pollution control facilities in large-scale livestock and poultry farms achieved 100%. The city has cumulatively cultivated 10 national-level green factories and 17 provincial-level green factories, establishing 282 agricultural film recycling points. The proportion of green power installed capacity exceeds the national average, reaching 72.3%.
Today, this "zero-waste" concept is accelerating its penetration from the industrial sector into broader society. From the Louhu Wetland Park, transformed from a "black and odorous water body" into a city reception hall, to experimental schools integrating environmental protection into daily teaching, Anshun has cumulatively established 203 "zero-waste cells," including zero-waste parks and zero-waste schools. The cyclical evolution from concept to practice is enabling Anshun to advance lightly and verdantly on the path of high-quality development.
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