To protect the safety of drinking water in border areas, Rinland Environmental Protection’s 40,000 tons/day drinking water defluoridation project in Baoshan, Yunnan is about to be put into operation

Baoshan, a city located in western Yunnan, is like a bright pearl embedded in the southwest border, exuding unique and charming charm. It is the famous main origin of Yunnan arabica coffee. The coffee produced has full particles and rich aroma, occupying an important position in the global coffee market. The Gaoligong Mountains in the territory meander southward from the Qinghai-Tibet Plateau, stretching for more than 600 kilometers. Its huge vertical height difference creates a unique three-dimensional climate where "one mountain is divided into four seasons and the weather is different ten miles away." From the scorching summer at the foot of the mountain to the freezing ice and snow at the top, you can experience the changes of the four seasons in a short distance. Because of this, Gaoligong Mountain is rich in biodiversity and is known as the "World Species Gene Bank" and "World Museum of Nature", preserving a large number of precious and rare biological species. Baoshan, known as "Yongchang" in ancient times, has a profound historical background. It is the granary of southwest my country and plays an important role in ensuring regional food security. During the Anti-Japanese War, Baoshan became a strategic location and the main battlefield of the Songshan Battle. Tengchong, a subordinate town of Baoshan, was the first county liberated during the Anti-Japanese War in China and left a mark in the history of the Anti-Japanese War.

Baoshan is located in the southwest border of my country, with complex topography. Mountainous and semi-mountainous areas account for 92%. In some areas, affected by geological conditions, the fluoride ion concentration in groundwater is high (the fluoride ion content in raw water reaches 1.2-2mg/L). Long-term drinking of high-fluoride water not only affects the health of residents, but also restricts local water supply security projects and the improvement of urban tap water quality.

Recently, the "40,000 tons/day low energy consumption membrane defluoridation system project for Dazhushan Water Plant in Baoshan City, Yunnan Province" undertaken by Rinland Environmental Technology (Beijing) Corp., Ltd.has completed preliminary acceptance and will be put into operation soon. Through advanced low-energy consumption membrane technology, this project successfully reduced the fluoride ion concentration of raw water from 1.2-2.0mg/L to 0.5mg/L, providing local residents with high-quality water sources that comply with the "Drinking Water Hygienic Standards" (GB5749-2022), marking a key step in the construction of a drinking water safety system in border areas.

Technology leadership:Low-pressure and high-efficiency membrane method creates new path for fluoride removal

The Baoshan project uses the FluoRid Pro series of low-energy fluoride removal special membranes and RL-F-8040ES membrane modules independently developed by Rinland Environmental Protection, breaking through the energy consumption bottleneck of traditional reverse osmosis technology. Through the special process of the negatively charged selective membrane, the system can achieve high-efficiency interception of fluoride ions in the low pressure range of 0.3-1.0MPa. The fluoride ion removal rate is stable at more than 90% for a long time, and the fluorine concentration of the produced water is less than 0.5mg/L. Compared with traditional processes, this technology can reduce operating costs by 20%-30%, becoming an "energy-saving benchmark" for water treatment in high-fluoride areas.

The process route of the Baoshan project adopts a two-stage treatment model of "pretreatment system (coagulation sedimentation tank + V-shaped filter) + low-energy membrane defluoridation system", fully reusing the owner's existing facilities, and achieving deep purification of the raw water of the Baoshan project in a compact space. The produced water quality is 100% up to standard 24 hours a day, providing a replicable "low-cost, high-efficiency" technical model for similar projects.

Quality management system:Full-cycle management and control ensures project quality

Since the launch of the Baoshan project, Rinland Environmental Protection has strictly followed the ISO9001 quality management system and gone through 20 stages of standardization implementation, covering the entire chain of design and development, component procurement, on-site installation and joint debugging and testing. The construction team established a "three inspection system" quality control system (self-inspection, mutual inspection, special inspection), and set quality control points for key processes such as membrane workshop equipment positioning, pipeline welding, and electrical wiring.

During the construction phase, Rinland Environmental Protection completed the integration of equipment and pipelines in the membrane workshop, the joint debugging of the electrical system and the deployment of the online water quality monitoring system. It simultaneously handed over a full set of technical documents such as the "Operation Manual" and "Maintenance Manual" to the water use unit, and conducted multiple rounds of operational training to ensure that the operation and maintenance team was proficient in the key points of equipment operation.

Improvement of people’s livelihood:One hundred thousand residents have access to safe water

According to estimates, after the Baoshan project is officially put into operation, it can cover about 100,000 residents in the Dazhushan area of ​​Baoshan City, solve the problem of excessive fluoride ion concentration in the raw water of the Dazhushan water plant, and ensure the safety of water supply. The low-energy membrane technology used in the project not only meets the water quality standards, but also significantly reduces operating costs, providing a sustainable solution for the treatment of fluorine-containing raw water in border areas. The implementation of this project has important demonstration significance in improving the water supply security capacity of Baoshan’s central urban area and promoting the implementation of the “double carbon” goal. In the future, Rinland Environmental Protection will continue to deeply explore the water treatment market in high-fluoride areas, drive technological innovation, and provide "efficient, economical, and intelligent" fluoride removal solutions to more areas, protect the "safety on the tip of the tongue" of the people, and help build a green development pattern in which humans and water are harmonious.