Foreword

Water security is an important part of national security, related to resource security, ecological security, economic security and social security. Since the 18th National Congress of the Communist Party of China, the Party Central Committee and the State Council have attached great importance to water safety work. General Secretary Xi Jinping emphasized that water safety is a major event involving the country's long-term stability, and clearly put forward "a new era of water-saving priority, spatial balance, systematic governance, and two-handed efforts." The 19th National Congress of the Communist Party of China put forward the grand goal and strategic deployment of decisively building a modern socialist country in an all-round way. The Fifth Plenary Session of the 19th Central Committee of the Party reviewed and approved the The Central Committee of the Communist Party of China's Recommendations on Formulating the Fourteenth Five-Year Plan for National Economic and Social Development and the Long-term Goals for 2035, set new requirements for water security. Over the years, the city has attached great importance to water resources protection and water security. Disaster management, water environmental protection, water ecological restoration, etc., have successively completed a number of major water safety infrastructures such as the middle route of the South-to-North Water Diversion and its supporting facilities, and the Haihekou Pumping Station. The river (lake) long system has been gradually established, and the Tianjin Water Affairs Group Co., Ltd. has been established. The city's water security level has been steadily improved, and the people's sense of happiness and security has continued to increase. "In the 14th Five-Year Plan period (2021-2025), the city is in full construction. On the basis of a high-quality well-off society, the first five years of the new journey of building a socialist modern metropolis in an all-round way. According to the city's overall arrangement, the "14th Five-Year Plan for Water Security in Tianjin" is one of the key special plans of the city's 14th Five-Year Plan for national economic and social development. This plan brings together and covers water affairs, ecological environment, and agriculture. Water-related responsibilities and tasks of multiple departments including rural areas, development and reform, industry and information technology, planning resources, housing and urban-rural construction, emergency response, sanitation and health, etc. have been included in the main water safety protection projects in 16 districts. The overall goal of the planning is water safety protection. Actively change the thinking of water management, accurately grasp the requirements of the situation, coordinate the shortage of water resources, water environmental pollution, water ecological degradation, water disaster losses and other new and old water problems, highlight the shortcomings of the project, strong supervision of the industry, reform and promote development, and make every effort to build water supply , Flood prevention, water ecology, and water governance guarantee systems provide strong support for accelerating the realization of the functional positioning of "one base and three districts" and the comprehensive construction of a modern socialist metropolis.

Chapter One "The Current Situation of Water Security in the Thirteenth Five-Year Plan

I. The overall situation of the completion of the construction project

"During the 13th Five-Year Plan period, the Municipal Party Committee and the Municipal Government attached great importance to water security protection, water ecological restoration, and water disaster prevention, etc., and arranged arrangements for water resources allocation and urban and rural water supply, water environment management and water ecological restoration, There are 41 projects and 94 sub-projects in 5 areas including flood prevention and waterlogging and disaster mitigation, rural water conservancy, and integrated water management, with a total investment of 90.751 billion yuan. A total of 64 sub-projects have been implemented by the end of 2020; due to higher planning adjustments, investment and financing channels have been narrowed, etc. A total of 30 sub-projects were not implemented due to reasons. At the same time, in accordance with the new requirements and new conditions of the central environmental protection inspection, emergency water supply, ecological water supply, etc., the water supply connection project of the river to the Erwangzhuang Reservoir, the north-south water transfer improvement project, and the 14 projects including rural drinking water quality and efficiency projects. According to statistics, the actual total investment completed during the 13th Five-Year Plan period was 44.509 billion yuan, accounting for 49.0% of the planned investment, and the average annual investment intensity was 8.902 billion yuan. Compared with the investment structure in the "Twelfth Five-Year Plan" period, the proportion of water resources allocation and urban and rural water supply and rural water conservancy investment increased slightly, from 10% to 15% to 15 to 20%; the proportion of investment in water environment governance and water ecological restoration was in On the basis of the Twelfth Five-Year Plan, it will continue to grow substantially, from 17% to about 44%; the proportion of investment in flood control and disaster mitigation has been drastically reduced, from 35% to 8%. In summary, the city's water security construction has shown new characteristics of water management, which focus on water environment management and water ecological restoration, water resources allocation, urban and rural water supply, flood prevention and disaster reduction, and balanced and coordinated development of rural water conservancy.

Second, the completion of planning target indicators

The main evaluation indicators of the "13th Five-Year Plan" are 17 items, including total water consumption control, water supply guarantee rate, urban water supply quality, urban water supply pipe network leakage rate, urban new and reconstructed regional drainage standards, and central urban sewage pipes The network penetration rate, the centralized treatment rate of urban sewage, the amount of deep groundwater extraction, the population of rural safe drinking water to improve quality and efficiency, the effective utilization coefficient of farmland irrigation water, and the comprehensive renovation area of ​​rural ponds have been completed; 11 indicators have been completed; sewage treatment plant pollution The four indicators of harmless disposal rate of mud, coastal moisture control standards, river system flood control standards, and farmland drainage standards failed to fully meet the standards; the water consumption of 10,000 yuan of GDP and the water consumption of 10,000 yuan of industrial added value were not fully met. The city's economic development is in the stage of returning to its roots, transforming from high-speed development to high-quality development, optimizing the industrial structure, and accelerating the conversion of new and old kinetic energy, coupled with the close relationship with the city's economic development indicators, failing to complete the expected goals. III. Main achievements in water safety guarantee During the 13th Five-Year Plan period, adhere to scientific planning as the guidance, relying on key projects, and reform and innovation as the driving force. A large number of major water safety infrastructures have been built in a concentrated manner, and a series of benign systems and mechanisms for water governance, water management, and water rejuvenation have been perfected and formed. , The water security level has been steadily improved, providing strong support for the city's economic and social development.

(1) The construction of a water-saving society continues to deepen. Adhere to the principle of "water saving first, actively implement the most stringent water resources management system, vigorously tap water-saving potential, and comprehensively promote water-saving actions. Continue to implement residential water use Ladder water prices, special water prices for water-consuming industries such as bathing, golf, and ski resorts have been implemented, and water conservation in urban life and industry has continued to deepen. The comprehensive reform of water resources tax and agricultural water prices has been deeply promoted, and the "Tianjin Water Resources Tax Reform Pilot Project" "Implementation Measures", "Tianjin Water Resources Tax Collection and Management Measures (Trial)" and other related management systems, initially established the city's agricultural water price formation mechanism, cost verification, quota management and over-limit progressive increase system, and completed Dazhongzhuang, Baodi District The construction of water-saving supporting renovation projects in irrigation areas such as towns has effectively promoted agricultural water-saving. The construction of water-saving enterprises (units) and residential communities has been continuously promoted, with coverage rates reaching 51.14% and 41.76% respectively, and 13 water-saving systems have been created. (Industry), the awareness of water saving in the whole society has been significantly enhanced. 9 districts have completed the construction of water-saving society at the county level, and the city continues to maintain the two honorary titles of water-saving society demonstration zone and national water-saving city.

(2) The ability to guarantee water resources has increased significantly in the past five years. The city's water supply has totaled approximately 15 billion cubic meters, of which 7.24 billion cubic meters have been transferred from the Luanhe River and the South-to-North Water Diversion Middle Route, which effectively guarantees the safety of urban and rural water supply. The middle route of the South-to-North Water Diversion Project has been completed successively into the Erwangzhuang Reservoir and the raw water pipelines of Wuqing and Ninghan. The Beitang Reservoir and the Wangqingtuo Reservoir have been impounded. The water supply engineering system has been further improved; the water supply coverage of the middle route of the South-to-North Water Diversion Project has been expanded to 14 districts, benefiting nearly 12 million people. Since the water supply has been connected, the water supply has been continuously and safely supplied for more than 2,000 days. The cumulative water volume has reached 5.7 billion cubic meters, and the water quality has always been maintained at surface water. Above the Class II standard, it has become the "lifeline of urban and rural water supply with sufficient water and excellent water quality. The horizontal ecological compensation mechanism for the upper and lower reaches of the river diversion from Luanhe to Tianjin has been established together with Hebei Province, and the fish culture cages in the Panjiakou and Daheiting Reservoirs have been cleaned up; completed; The treatment of 68 villages, 195 livestock and poultry farms (breeding households) and 38 storage channels in the Yuqiao Reservoir Class II protection zone was completed and operated on the Yuqiao Reservoir's estuary wetland, and the bottom of the Yuqiao Reservoir was dredged. The 12.3 square kilometers and Luan River diversion channel dredging and the comprehensive treatment project of the Lihe River have started the construction of the sewage interception pipeline project on the north bank of the Yuqiao Reservoir, and the construction of the first and second phases of the sewage interception ditch around the reservoir. The water quality of the Luanhe diversion is gradually improving. There are 7 reclaimed water plants in Yingcheng and Xinhe, 48 kilometers of reclaimed water pipe network has been laid, the utilization rate of reclaimed water has increased from 30% to 42%, and the annual utilization of desalinated seawater has increased from 41 million cubic meters to 47 million cubic meters. Unconventional water has become Effectively replenish water source.

(3) In the past five years since the initial formation of the urban-rural water supply integration pattern, the project has successfully completed the consolidation and improvement of rural drinking water safety and rural drinking water quality and efficiency. District, Baodi District, Jinghai District, Ninghe District, Jizhou District, 2,817 villages in 6 districts, 2.868 million people drink urban tap water, realizing equalization of urban and rural water supply public services; newly renovated and expanded Lingzhuang, Ninghe, and Wuqing Wait for 10 water plants, build 846 kilometers of tap water supply pipe network, renovate 601 kilometers of old water supply pipe network, upgrade and renovate 504 secondary water supply facilities, replace more than 3 million smart water meters, and reduce the leakage rate of urban water supply pipe network to 10 %, the city's urban and rural water supply quality meets the standards, the water pressure is stable, and the service is better, which provides a strong guarantee for the overall promotion of epidemic prevention and control and economic and social development.

(4) The drainage capacity of the central city has been steadily improved. The central city has successively renovated areas prone to water accumulation such as Liuwei Road and Southwest Building. The areas prone to water accumulation have been reduced from 51 to 9, and a number of old drainage pipe networks have been renovated. Upgrade; implemented the comprehensive treatment of the outer ring river and the treatment of the weak section of the Jin River embankment; built 8 secondary river pumping stations, including Sanyuan Village, Yueya River, and Fuxingmen, with a total drainage capacity of 75 cubic meters per second, secondary rivers The drainage capacity of the pumping station increased from 199.27 cubic meters per second to 274.27 cubic meters per second; three efflux pumping stations at Haihe, Chentaizi, and Wanjia Wharf were built, with a total efflux capacity of 300 cubic meters per second. The increase from 202.6 cubic meters per second to 502.6 cubic meters per second has greatly eased the drainage pressure in the central urban area. All districts and departments have worked together and coordinated to successfully deal with the heavy rains of typhoons in 2016 "July 20, 2018" July 24, 2019" Lichma, etc., and the main road retreat time under the magnitude of heavy rain From 24 hours to 12 hours, urban drainage has withstood a severe test.

(5) The quality and quantity of urban sewage treatment have been improved over the past five years, and 27 sewage treatment plants and 40 general town sewage treatment facilities have been built and expanded successively in Binhai New Area Xinhe, Beichen District Dashuang, etc. The sewage treatment capacity of the city has increased from 2.981 million The ton/day will be increased to 4.01 million tons/day, and the centralized treatment rate of urban sewage will be increased from 91.59% to 95.97%, basically achieving full coverage of urban sewage treatment facilities in the city. Five sewage treatment plants including Jingu, Xianyang Road, and Zhangguizhuang in the central urban area have been upgraded and upgraded, and 105 sewage treatment plants outside the ring have been upgraded. The main indicators of the effluent quality of 110 urban sewage treatment plants in the city have reached surface water category IV standards. Newly renovated and expanded 5 sludge treatment plants, added 1,040 tons of sludge harmless treatment per day, and the sludge harmless treatment rate reached more than 95%, effectively reducing the pollution load into the river.

(6) In the past five years, the quality of water ecological environment has been significantly improved. Through the fight to defend the clear water, the three major actions of river and lake water environment investigation, major remediation, and major improvement have been organized in depth, and the special action of "clearing the four chaos" has been fully carried out. "One river, one policy" pollution control, 12 rivers entering the sea have basically eliminated the inferior Class V water bodies; 2737 rain and sewage mixed series connection points have been renovated, and the rain and sewage combined area has been reduced from 121.28 square kilometers to 46.68 square kilometers, and the main urban area has been basically eliminated In the blank area of ​​the sewage pipe network, built underground storage tanks for the Xinkai River and Xianfeng River, and completed the renovation of 26 black and odorous water bodies in the built-up areas, all of which met the national "long-term cleanness standard"; completed the main construction of 567 black and odorous water bodies in rural areas The black and odor phenomenon was initially eliminated; 13,700 mu of rural ponds and 1,178 kilometers of ditches were treated, effectively improving the rural water environment. In 2020, the proportion of water bodies in the national examination section reached 55%, and the proportion of water bodies inferior to category V dropped to zero, and the water ecological environment The quality is the best in history. The middle and west routes of the North-to-South Water Diversion Project have been completed and the construction of the east route has been started. The two water circulation systems of Xinhe have been completed and effective, and the ecological water supply to important rivers and lakes and wetlands such as Qilihai, Beidagang, and the North-South Canal exceeds 4 billion cubic meters; the central urban area has realized the circulation of river water bodies, which has been upgraded from regular water replenishment to perennial circulation. At the same time, five measures such as aeration and oxygenation and ecological floating beds were taken simultaneously, which effectively contained the outbreak of blue-green algae and ensured the smooth holding of the 13th National Games. The comprehensive management of groundwater overexploitation was progressing steadily, and the amount of deep groundwater extraction decreased from 202 million cubic meters. 65 million cubic meters, exceeding the task assigned by the state ahead of schedule.

(7) The capacity of flood control and drainage continues to increase. Yongding New River, Duliujian River, and Beijing Drainage River are fully up to standard; the 26 km section from Zigu Gate to Leshan Rubber Dam in Chaobai New River has completed the preliminary approval. Other rivers All sections of the Jiyun River are up to the standard for governance; 39.3 kilometers of the right bank of the Bamencheng-Baoning junction of the Ji Canal and the Banqiao-Mengjiuwo section of the left bank have completed the governance tasks; some river sections such as the Xianghe River, the Zhouhe River, and the Xinhe River are completed. The task of governance, the flood discharge capacity of the first-level flood discharge channel has been greatly improved. At the same time, the first phase of the Yongding River floodplain treatment project has been fully completed, and the second phase of the project is being accelerated; the Dahuangbao flood storage and detention area has been fully constructed; the Zhonghong Gudao sluice and other large and medium-sized dangerous sluices have been completed. Renovated 22 state-owned rural water pumping stations, improved farmland drainage area of ​​1.02 million mu, dredged 115.1 kilometers of rural drainage channels, harnessed medium and small rivers, harnessed 47 project areas in key counties, and further improved farmland drainage conditions.

(8) The reform of the system and mechanism continued to deepen the reform of the flood control system, the adjustment of rural water conservancy responsibilities was basically completed, and the responsibilities of water affairs, emergency response, agriculture and rural areas, housing and urban-rural construction, ecological environment, planning resources and other departments were initially clarified. The reform of business institutions has achieved initial results. The "Implementation Opinions of Tianjin on the Full Implementation of the River Chief System" and the "Implementation Opinions of Tianjin on the Full Implementation of the Lake Chief System" were issued. First-level river courses, 185 second-level river courses, 6972 sections of ditches, 1 natural lake, 81 open landscape lakes in built-up areas, 27 reservoir wetlands, more than 20,000 ponds and landscape water bodies are all included in the management, and the city and district are fully implemented. , The main responsible comrades of the three-level party and government of the township (street) shall be appointed as the "double general river (lake) chief, and 5661 river (lake) chiefs of the city, district, township (street) and village shall be implemented, and the system of river (lake) chiefs shall be realized Full coverage of management. Focus on revision or promulgation of the "Regulations on Water Conservation in Tianjin", "Regulations on the Management of Water Intake Permits in Tianjin", "Regulations on the Management of Secondary Water Supply in Tianjin", "Technical Regulations for Secondary Water Supply Projects in Tianjin", and "Maintenance of Tianjin Water Supply Projects in Villages and Towns" Maintenance Project Construction and Municipal Financial Subsidy Funds Interim Management Measures, "Tianjin Municipal Secondary Water Supply Facilities Cleaning and Disinfection Management Regulations", "Tianjin Municipal Reclaimed Water Utilization Management Measures", etc. 29 regulations and systems; prepared water supply, drainage, reclaimed water utilization, desalination A series of professional planning such as seawater utilization, and the water safety guarantee planning system has been further enriched and perfected; the reform of the approval system of "decentralization, management and service," one system and three modernizations has been continuously deepened, a joint approval system for construction projects has been basically established, and the quality of project construction has been steadily improved. It was rated as A-level in the construction quality assessment; a track inspection system for river courses, sluices, pumping stations and other facilities was established, and Jiuxuan sluices and other facilities reached the standards of municipal water management units. Build a comprehensive water business management platform based on "one network, one map, one center, and one portal, and initially build a big data center architecture system. Poverty alleviation collaboration and counterpart support tasks in the eastern and western regions have been successfully completed.

Chapter 2 Facing Situation and Problems

The Party Central Committee and the State Council attach great importance to water safety work. General Secretary Xi Jinping issued a series of important instructions on water safety protection, and put forward the new era of water governance thinking of "water saving priority, spatial balance, systematic governance, and dual efforts." The coordinated development of the Beijing-Tianjin-Hebei region, the promotion of the development of the Yangtze River Economic Belt, the ecological protection and high-quality development of the Yellow River Basin gave important speeches, which pointed out the direction for water safety and the ecological protection of rivers and lakes and provided fundamental follow. The 19th National Congress of the Party stood The new historical position has clearly made major decisions and deployments such as implementing national water-saving actions, accelerating water pollution prevention, strengthening water conservancy infrastructure network construction, and protecting and restoring important ecosystems. The Fifth Plenary Session of the 19th Central Committee of the Communist Party of China reviewed and approved the Central Committee of the Communist Party of China Recommendations on Formulating the Fourteenth Five-Year Plan for National Economic and Social Development and the Long-term Goals for 2035. It is important to strengthen the construction of water conservancy infrastructure, improve the ability to optimize the allocation of water resources, enhance urban flood control and drainage capabilities, and strengthen river (lake) ) The long-term system, the promotion of full coverage of urban sewage pipe networks, and the implementation of national water-saving actions have put forward new requirements for water security. Visits and inspections, listening to grass-roots opinions and suggestions, exchanges and discussions with experts and other methods of investigation, in-depth analysis of the current situation and outstanding issues, the Ninth Plenary Session of the The Fourteenth Five-Year Plan for Social Development and the Proposals for the 2035 The goal is to basically realize the functional positioning of "one base and three districts," Jincheng and Bincheng dual-city development pattern has initially taken shape, high-quality economic development has reached a new level, urban civilization has been newly improved, ecological civilization construction has achieved new results, and people's livelihood Welfare has reached a new level, and governance efficiency has been newly improved; clearly promote the coordinated development of Beijing-Tianjin-Hebei, innovation-driven development strategy, promote the construction of a new development pattern, implement the rural revitalization strategy, create a pioneer area of ​​reform and opening up, build a culturally strong city, and build a beautiful Tianjin, Major tasks such as improving the quality of life of the people, building a safe Tianjin, and adhering to the party's overall leadership have set new tasks for the ability to guarantee water safety. In response to the new requirements of the Party Central Committee and the State Council for water management and the new tasks of the city's economic and social development, "In the 14th Five-Year Plan period, water resources protection, water disaster prevention, water ecological environment and industry supervision capabilities

There are still some weak links and outstanding issues that need to be resolved urgently.

(1) The ability of water resources protection does not meet the new requirements of high-quality economic and social development. At present, the city's urban water supply mainly depends on the water from Luanhe River and the middle line of the South-to-North Water Diversion. The quality of the water from Luanhe River is still unstable, and the upstream water resources development The increase in utilization and the attenuation of the inflow of the Panjiakou and Daheiting Reservoirs have led to a decrease in the city's water distribution. The mid-line water has certain operational risks during the flood and ice periods. The second phase of the east line of the South-to-North Water Diversion Project has not yet fully started construction, and there are hidden dangers in water security. With the implementation of groundwater over-exploitation control and rural drinking water quality and efficiency improvement projects, groundwater source switching needs to increase the external water supply, and it is also necessary to speed up the construction of middle-line water allocation projects in Baodi, Jinghai, and Dagang Binhai New Area. The production capacity of some water plants does not match the regional development. The Xinkaihe, Jinbin, and Jieyuan water plants have reached the designed production capacity. New development areas such as the Northern New District and the Future Science and Technology City still need to extend the pipeline network for water supply. There is still a certain gap between this city's rigid demand for high-quality economic and social development and the people's ever-increasing need for a better life. Insufficient water source protection. With the economic and social development of the upper reaches of the Luanhe River and the continuous development and utilization of water resources, the amount of water entering the Panjiakou Reservoir has been significantly reduced. Among them, the amount of water allocated to the city for 75% of the frequency years will be reduced by about 50%. "Although the quality of water diversion from Luanhe River continued to improve during the 13th Five-Year Plan period, it was still not stable enough. From 2017 to 2019, the total nitrogen index of Daheiting Reservoir was always more than three times the level of III water standard, and the total phosphorus index also exceeded the level of III water standard. ; Affected by the water diversion from Luanhe River and surrounding catchments, the water quality of Yuqiao Reservoir exceeded Class III water standards in some periods. The main items that exceeded the standards were total nitrogen and total phosphorus, and there was a risk of concentrated outbreaks of algae in summer. Indicators such as camphenol have risen suddenly, affecting the safety of urban water supply. After May 2016, Yuqiao Reservoir will only provide intermittent water supply to cities when the water quality meets the drinking water quality requirements. At the same time, the midline water also has certain operational safety risks." During the 13th Five-Year Plan period, the city has diverted the midline water over the target year after year, with a total of 1 billion cubic meters of water over the target. As the water consumption of other midline water-receiving areas increases year by year or encounters a dry year of diversion, urban and rural water supply will face a severe situation . The mid-line water delivery capacity during the winter ice age is limited. In the winter of 2019, due to the overhaul of the Beijing main water delivery line, the maximum flow of water delivered to the city is about 30 cubic meters per second. In the future, the normalized water delivery flow is about 18 cubic meters per second. The water supply demand is 35 cubic meters per second, and there is a large water supply gap. In the summer flood season, there is a risk of flood damage to the main water delivery channel of the 1,200 km central line. In addition, the summer is at the peak of urban and rural water use, and there is a certain risk of urban and rural water supply. The water supply facilities are uneven. The city has 5 water source reservoirs in Yuqiao, Erwangzhuang, Wangqingtuo, Beitang, and Beidagang. The current storage capacity is 799 million cubic meters, of which Yuqiao Reservoir can only regulate and store Luanhe water, and the water quality is unstable. The Beidagang Reservoir is the planned east route of the South-to-North Water Diversion and the emergency storage reservoir for diversion from the Yellow River. Currently, there is no reliable water source. The remaining three reservoirs have a total storage capacity of 74 million cubic meters, and the capacity for safe water supply is insufficient. The raw water project support capacity is insufficient, the supporting water supply pipelines for the middle route of the South-to-North Water Diversion Project are still incomplete, and the current water supply capacity of the middle route supporting projects in the main urban area and Binhai New Area does not meet the development needs; Baodi District lacks middle route supporting water supply pipelines and can only rely on Luanhe water supply; Jinghai District does not have raw water The pipelines and water plants only rely on the Lingzhuang Water Plant to supply tap water; the Dagang area of ​​Binhai New Area has three pipelines for diversion from Luanhe to the port, from Luanhe to polyester, and Baodi Petrochemical. The scale of the raw water pipeline is insufficient, and the level of water supply security in the above-mentioned areas is relatively low. The current facilities cannot meet the water demand for development. The production capacity of water plants is not rich. In some areas, the scale of water plants is insufficient and the layout is unreasonable. The water production capacity of Jieyuan Water Plant and Jinbin Water Plant have reached their peaks, and the water pressure in some areas during the peak period of water supply is