Guangzhou Water Investment Group Drainage Company polishes the background color of ecological water control in megacities.

Guangzhou Water Investment Group Drainage Company polishes the background color of ecological water control in megacities, improves the tough and safe drainage guarantee system … A high temperature, a typhoon and a rainstorm pushed the city’s anti-risk ability to the examination room, and "tough city" became a hot word with high frequency. The concept of "resilient city" is mentioned for the first time in the "14th Five-Year Plan" and the long-term goal outline for 2035, which is a necessary option for urban development in the new era and also points out the direction for urban water environment management and flood control and drainage. In the construction of Guangzhou’s resilient city, there is a vibrant new force-Guangzhou Urban Drainage Co., Ltd. (hereinafter referred to as "Guangzhou Drainage Company") established by Guangzhou Water Investment Group Co., Ltd. Since its formal establishment in May 2018, Guangzhou Drainage Company has thoroughly practiced the concept of "Lucid waters and lush mountains are invaluable assets" and the people-centered development thought, and made great efforts to create a new highland for water industry reform in the new era, focusing on the daily operation, maintenance and repair of public drainage facilities in the central city of Guangzhou, and flood prevention and rescue services in municipal trunk roads and important areas and drainage guarantee services for major events; We will further promote the quality improvement and efficiency improvement of sewage system, promote the water environment to achieve "long-term cleaning", create a healthy urban drainage guarantee system, and provide a strong boost for the construction of resilient cities! The first-line operation and maintenance personnel of drainage used drones to patrol the river for 300,000 kilometers in Guangzhou Water Investment Group Drainage Company, taking the lead in exploring and innovating the management mode of "compartmentalization+gridding" of urban drainage network, effectively managing and maintaining the drainage network for more than 16,000 kilometers, and accumulating the drainage network for more than 60,000 kilometers.The inspection pipe network is over 300,000 kilometers. More than 110,000 people have innovated the "point-line-surface" three-level emergency rescue and deployment system to prevent waterlogging, and set up 121 professional emergency rescue teams with a total pumping capacity of 70,000 cubic meters per hour. Since its establishment, the cumulative emergency response has exceeded 350 times, and more than 110,000 rescue personnel have been dispatched. The intelligent drainage comprehensive management platform is the first in the province to build a smart drainage comprehensive management platform consisting of a drainage facility management operation platform and a "management and maintenance" APP, which has been promoted and applied by the industry authorities throughout the city. Leading by Party Construction: The so-called "resilient city" refers to a city or urban system that can resolve and resist external disasters or shocks, keep its basic functions, structure and characteristics unaffected, and then recover quickly. For a resilient city, there is an image metaphor, which is to make the city like a spring, able to calmly cope with external pressure and quickly recover to its original state. Managing urban water affairs with the concept of resilience, creating a healthier and more reliable urban water environment system, and letting citizens enjoy a happy life with clear rivers and green shores are the important contents of building a "resilient city". Since its establishment, Guangzhou Drainage Company has always adhered to the concept of "people first", deeply practiced the concept of "water is good and red" led by the party building, anchored the functional orientation of serving the overall situation, serving the city, serving the industry and serving the people’s livelihood, built a grassroots "fighting fortress" and forged a pioneer of "drainage guards".In the major exams such as the reform of urban drainage system and mechanism, the solution of water security problems in water environment management, the prevention and control of epidemic situation in COVID-19, and the emergency support for flood fighting and emergency rescue, we have explored and created a "Guangzhou sample" for underground drainage management in megacities, built a more resilient urban drainage security system, and fully played its role as a basic public service platform for the government. As the main force of flood control and emergency rescue in Guangzhou, Guangdong Province, Guangzhou Drainage Company has effectively dealt with the urban waterlogging caused by extreme weather such as super typhoon Mangosteen and historic dragon boat water with the spirit of "coming at once, fighting and winning" and the state-owned enterprise of "not stressing conditions and difficulties". Many times, he was ordered to successfully complete the task of supporting flood fighting and emergency rescue in Jiangxi, Zhuhai, Shaoguan, Zhanjiang and other provinces and regions. In recent years, a total of more than 110,000 people fought in the front line of drainage security. There was no secondary pollution infection caused by drainage overflow in the sixth district of Guangzhou Center. The drainage gates of thousands of households were guarded with practical actions, which made important contributions to ensuring people’s lives and property and the safety and stability of urban drainage. In 2020, it won the title of "the most beautiful emergency collective" in Guangdong Province, and it is the only state-owned enterprise among the top ten award-winning collectives in Guangdong Province. Guangzhou new drainage case won the top ten cases (national level) of "Protecting Ecological Civilization" in the Blue Book of Social Value of State-owned Enterprises in Guangdong-Hong Kong-Macao Greater Bay Area. The North District Operation Branch of Guangzhou Drainage Company won the title of "Guangzhou Advanced Grass-roots Party Organization" in 2021, making party flag fly high in the front line of water control.Smart Drainage: Building a more resilient urban drainage security system To make the water environment more resilient, we need a reasonable and efficient urban drainage system first. In terms of system and mechanism, Guangzhou Municipal Party Committee and Municipal Government approved the establishment of Guangzhou Drainage Company, which changed the multi-head management mode of "city and district level+rain and sewage separation" of drainage facilities in the central city, set up a vascular team of public drainage facilities with comprehensive coverage, clear responsibilities, advanced technology, fine management and modern industry, and effectively realized the "integrated" management of urban public drainage facilities. Guangzhou Drainage Company efficiently managed and maintained more than 16,000 kilometers of drainage pipe network, creatively put forward the management mode of "compartmentalization+gridding" of urban drainage pipe network, divided 13 sewage systems in the central city of Guangzhou into 43 districts, implemented the system of length responsibility, and set up 77 assessment points, focusing on the assessment of operational indicators such as sewage concentration and full pipe rate of drainage pipe network, forming a range of "horizontal to edge, vertical to the end" and "full coverage from source to end+traceability" Innovate the "point-line-surface" three-level emergency rescue and deployment system to prevent waterlogging, improve the forecast plan system, early warning system and emergency command system, clarify the organization and command structure, response start conditions, emergency rescue process, waterlogging-prone risk location, on-site disposal measures, etc., improve the refined and standardized level of emergency rescue work to prevent waterlogging, and firmly hold the urban drainage safety defense line for millions of citizens.Hardware upgrade of emergency support equipment for preventing waterlogging in drainage company of Guangzhou Water Investment Group: Put on "hard core armor" for urban drainage. Combined with the current actual work situation, Guangzhou Drainage has built a distributed emergency command center for disaster preparedness to ensure the efficient operation of emergency rescue mechanism. Set up 121 professional emergency rescue teams, with a scale of over 2,600 people, and pre-set 61 important areas and 195 main roads in the central city before the rain, so as to deploy and upgrade the defense in advance. For example, on June 14 -17, 2022, Guangzhou was hit by the triple superposition of "astronomical tide", "dragon boat water" and "extremely heavy rainfall". All the 121 teams were deployed at 7: 00 a.m. every day, and personnel were arranged to patrol at key points along the river for 24 hours. Once waterlogging and river water backflow occurred, emergency rescue was immediately carried out. In recent years, Guangzhou Drainage has made every effort to cultivate and build a knowledge-based, skilled and compound modern industrial workforce. The company has been successfully included in the second batch of pilot units for the identification of professional skill levels of large enterprises with industry representation in Guangdong Province, and truly realized that professional people do professional things. The staff used the cleaning and sewage suction integrated vehicle to optimize the layout of rescue bases, and built 12 comprehensive drainage and waterlogging rescue bases with technical equipment, emergency duty, material reserve, logistics support and other functions, covering an area of 100,000 square meters, effectively shortening the radius of rescue operations in the central city. Among them, Huadi Henan Gate Base, as a demonstration emergency rescue base, was identified as "Guangzhou Western Base for Emergency Rescue Training".It is one of the four major professional bases in Guangzhou. At the same time equipped with advanced equipment at home and abroad. It is equipped with more than 600 sets of advanced drainage equipment at home and abroad, such as large-displacement drainage vehicles, "Dragon Water Suction" and hydraulic power stations, which are suitable for all kinds of waterlogging rescue scenes in cities, and the total pumping capacity has increased to 70,000 cubic meters per hour. Compared with before the establishment of the company, the pumping capacity of the central city has increased by more than 2 times. Drainage emergency support capacity ranks in the forefront of the country. "Software" Innovation: Equipping "Smart Brain" for Urban Drainage Aiming at the problems of unclear ownership of drainage pipelines and lack of dynamic information in megacities, Guangzhou Drainage Company, driven by information innovation, carried out "software" innovation and built a smart drainage system. It is the first in the province to build a smart comprehensive drainage management platform with geographic information system, perception monitoring network, Internet of Things, mobile Internet and other information technologies as the core, which is composed of drainage facilities management operation platform and "Guanyangtong" App. This system realizes "one map" visual management of drainage facilities, "one network" online monitoring and early warning analysis of water level and flow in the whole process of drainage, real-time updating and dynamic management of pipeline data, and multi-terminal sharing of mobile inspection and maintenance information, which really puts a "smart brain" on modern drainage management and creates a new era of drainage information management. In addition, relying on the flood control emergency dispatching platform established by the system, the whole process can be visualized online, and the latest situation of the team can be grasped in real time, and the field situation can be viewed at any time, and the deployment strength and path can be optimized in time to realize the integration of information collection, command, dispatching and decision-making, and promote urban flood control.The goal of "quick response, scientific scheduling and accurate disposal" was realized. At the same time, Guangzhou Drainage takes "opening the last mile" as the key point of scientific and technological innovation, continuously strengthens the strength of independent research and development, carries out technical research, develops, produces and puts into use a large number of small and medium-sized dredging equipment, fills the gap in mechanized dredging operations of inner streets and lanes in old urban areas and villages in cities in Guangzhou, and greatly improves the efficiency of urban drainage in Guangzhou. The first non-stop dredging robot in China, which belongs to the international leading level, won the special prize of Science and Technology Award of Guangdong Municipal Industry Association in 2022. In the past three years, it has obtained 39 national patents and participated in the preparation of 4 industry standards and specifications; Won 9 provincial and municipal awards. Thanks to the blessing of "soft and hard" strength, Guangzhou Drainage Company has handed over a beautiful report card on urban waterlogging prevention and control: "One Point One Policy" has compiled a special countermeasure report on the depth of waterlogging risk points in key areas of the six central districts, effectively dealing with urban waterlogging caused by extreme weather such as super typhoon "Mangosteen" and historic "Dragon Boat Water"; Completed drainage emergency support for large-scale activities such as Canton Fair and senior high school entrance examination over the years for about 60 times; The cumulative emergency response exceeded 350 times and the number of emergency personnel dispatched exceeded 110,000. In recent years, through the drainage pipe network management and emergency system construction, the urban drainage capacity and disaster preparedness capacity have been significantly improved, and the resilience of preventing waterlogging in the central city has been significantly enhanced. Under the conditions of non-extreme rainstorm, flood and tidal disasters, the central city of Guangzhou can run normally and the lives of citizens will not be affected. The citizens responded to the flood appeal in time.Guangzhou drainage ranks among 40 public service enterprises in the city’s 12345 hotline, leading the city for three consecutive years. A total of more than 100 thank-you letters, banners and plaques at all levels in the province and city were received. Ecological water control: the "wide array of samples" has achieved results. The "black and odorous river" has changed into the people’s "Happy River". With a healthy urban drainage guarantee system, the "toughness" of the water environment system has also been continuously enhanced, and the treatment of black and odorous water bodies has achieved remarkable results. The water quality assessment of Yagang national examination section in Baiyun District is a "hard bone" in the treatment of black and odorous water bodies in Guangdong Province. Faced with the huge challenge of tight time, heavy pressure and complicated situation, Guangzhou Drainage Company worked hard day and night, racing against time, and completely completed the repair of 2726 functional defects and 902 structural repairs of the pipe network in Heichouhe River Basin. Since 2019, the Yagang section has gone from inferior grade V water in 2018 to stable grade IV water at present, and the water quality has improved by two categories. Guangzhou Drainage Company also helped Shijing Estuary Provincial Examination Section to successfully eliminate the inferior V class for the first time, and Chebeiyong and Shuanggangyong were selected as typical cases of water control in China, which made an important contribution to Guangzhou’s selection as "National Demonstration City for Black and Odor Water Treatment". "Check the external water" and "squeeze the external water" to improve the quality and efficiency of the sewage treatment system. In order to fully promote the efficiency of urban water pollution control, Guangzhou Drainage Company adheres to the idea of systematic water control, focusing on the full collection and treatment of sewage, and continues to carry out the quality and efficiency improvement of the sewage treatment system.,Organize forces to check the external water such as river water, construction site water, mountains and rivers, groundwater, etc., and make targeted rectification plans such as cleaning up sewage and diverting water, and repairing diseases. Customized the work plan of "one plant, one policy" to improve quality and efficiency of 13 sewage treatment plants in the central city, including Liede Sewage Treatment Plant. Through the joint control and adjustment of "plant-network-river", the influent concentration of sewage treatment plants in the central city reached the assessment standard, greatly improving the efficiency of urban sewage collection and treatment. Among them, the experience of Guangzhou Liede and Xilang systems in improving quality and efficiency has been designated by the Ministry of Housing and Urban-Rural Development as one of the typical cases of improving quality and efficiency of water environment in China, which has been promoted and demonstrated throughout the country. The company participated in the "Guidelines for Improving the Quality and Efficiency of Urban Domestic Sewage Treatment in Guangdong Province" and won the first prize of the Science and Technology Award of Guangdong Municipal Industry Association. Modern drainage industry workers use pipeline endoscope equipment to check the pipe network. "Black odor is in the water, the root is on the shore, the key is the outlet, and the core is the pipe network." Guangzhou Drainage Company has explored and practiced the integrated management of urban drainage effectively, and the "extensive drainage sample" of underground drainage management in megacities has achieved results. The cumulative drainage network has exceeded 60,000 kilometers, and the inspection network has exceeded 300,000 kilometers. The operation efficiency of the drainage network in the central six districts of Guangzhou has been continuously improved, basically eliminating the phenomenon of sewage overflow on sunny days. In recent years, the quality of water environment in Guangzhou has been improving continuously. On the basis that in 2020, 13 national and provincial examination sections of the city reached the standard in an all-round way, and 147 black and odorous water bodies were completely eliminated and reached the standard of "long-term control and long-term clean-up", in 2022, 20 national and provincial examination sections reached the standard in stages, and the black and odorous rivers in the past "changed".It has become a beautiful Happy River and Lake, and citizens have more high-quality living space near the water. Sail hard and persevere. In the new journey, building a resilient city is an inevitable requirement to follow the objective laws of urban development. The 14th Five-Year Plan for Ecological Civilization Construction in Guangzhou, issued and implemented in September 2022, proposes to adhere to the concept of safe development, consolidate the flood control and drainage engineering system, promote the construction of a sponge city, improve emergency shelter and public fire-fighting facilities, improve comprehensive disaster prevention and mitigation capabilities, and promote the construction of a safe and resilient city. Guangzhou Water Investment and Drainage Company will continue to uphold the working purpose of putting people first and life first, and take the value mission of "protecting water for the people, consolidating the foundation for the party and adding luster to Guangzhou" as its mission, and bravely shoulder heavy burdens in water environment management, water safety guarantee and emergency rescue modernization; Do not disgrace your mission in the construction of ecological civilization; Contribute to the strength of "Guangzhou Drainage" in building a resilient city, and comprehensively help Guangzhou to accelerate the realization of new vitality and "four new achievements" in the old city.