问题现状：银川市作为西北地区重要中心城市，面临严峻的水资源短缺与生态保护双重压力。作为全国首批区域再生水循环利用试点城市，其传统地上污水处理厂存在“邻避效应”突出、土地利用率低、再生水利用率不足等问题。银川市第一再生水厂项目落地前的所在区域原为奶牛场和水泥厂等原料加工企业，存在废旧物资处理、垃圾堆放造成的土壤与水污染，制约了城市绿色发展与黄河流域生态保护目标的实现。
原因分析：一是传统污水厂建设模式与城市生态空间割裂，公共开放空间有限；二是再生水输配体系尚不完善，水资源循环利用链条未打通；三是公众对污水资源化的认知度低，环保设施的社会教育功能未充分释放。

改进目标：以“绿色、智慧、创新、共享……

Company/Organization Profile

Yinchuan No. 1 Reclaimed Water Plant actively responds to the national "dual carbon" strategy and the requirements for ecological protection of the Yellow River Basin. Guided by the core philosophy of "green, smart, innovative, and shared," the plant adopts a semi-underground structure, with the core wastewater treatment processes placed underground and the top constructed as an open ecological park. The facility covers a total area of 31.6 hectares, with 19 hectares designated as green space.

Integrating wastewater treatment, reclaimed water reuse, water science exhibition, cultural education, and Party-building education, the plant has a treatment capacity of 300,000 tonnes per day, with effluent quality consistently meeting the quasi-Class IV surface water standard. The annual reclaimed water reuse volume exceeds 50 million tonnes.

The plant has continuously promoted the public opening of environmental facilities, having conducted over 280 public open events and received more than 5,000 visitors to date. It has been honored with multiple national accolades, including the "2024 Top Ten Model Facilities for Public Opening," and has become a demonstration benchmark for green, low-carbon development and ecological civilization construction in Northwest China.

机构简介

银川市第一再生水厂积极响应国家“双碳”战略与黄河流域生态保护要求，以“绿色、智慧、创新、共享”为核心理念，采用半地下式结构，将污水处理核心工艺段置于地下，顶部打造为开放式生态公园，占地总面积31.6公顷，绿化面积19公顷。项目集污水处理、再生水利用、水科技展览、文化科普、党建教育于一体，处理规模30万吨/日，出水水质稳定达到地表准Ⅳ类标准，年再生水回用量超5000万吨。项目持续推动环保设施向公众开放，累计开展开放活动280余次，接待公众超5000人次，荣获“2024年十佳环保设施开放单位”等多项国家级荣誉，已成为西北地区绿色低碳发展与生态文明建设的示范标杆。

 

Project Overview

Current Challenges:As a key central city in Northwest China, Yinchuan faces the dual pressure of severe water scarcity and ecological conservation. As one of the first national pilot cities for regional reclaimed water recycling and reuse, its conventional aboveground wastewater treatment plants have been plagued by prominent issues such as the "NIMBY (Not In My Backyard)" effect, low land utilization efficiency, and insufficient reclaimed water reuse rates. Prior to the implementation of the Yinchuan No. 1 Reclaimed Water Plant project, the site was occupied by industrial operations including a dairy farm and a cement plant, along with associated raw material processing facilities. The area suffered from soil and water contamination caused by improper disposal of obsolete materials and waste accumulation, which constrained the city's green development and hindered the achievement of ecological conservation targets for the Yellow River Basin.

Cause Analysis:First, the conventional construction model of wastewater treatment plants has been disconnected from urban ecological space, resulting in limited public open space. Second, the reclaimed water transmission and distribution system remains underdeveloped, leaving the closed-loop water resource recycling chain incomplete. Third, public awareness of wastewater resource recovery remains low, and the social education functions of environmental facilities have not been fully leveraged.

Improvement Objectives:Guided by the philosophy of "green, smart, innovative, and shared," the project aims to establish Northwest China's first semi-underground garden-style reclaimed water plant, achieving three major transformations: spatial integration that shifts the facility from "NIMBY" to "YIMBY (Yes In My Backyard)"; efficiency enhancement that upgrades from "compliance discharge" to "resource recycling"; and functional expansion that evolves from a "closed facility" to an "open platform." Ultimately, this initiative strives to create a "Yinchuan Model" for ecological protection and high-quality development in the Yellow River Basin.

项目背景

问题现状：银川市作为西北地区重要中心城市，面临严峻的水资源短缺与生态保护双重压力。作为全国首批区域再生水循环利用试点城市，其传统地上污水处理厂存在“邻避效应”突出、土地利用率低、再生水利用率不足等问题。银川市第一再生水厂项目落地前的所在区域原为奶牛场和水泥厂等原料加工企业，存在废旧物资处理、垃圾堆放造成的土壤与水污染，制约了城市绿色发展与黄河流域生态保护目标的实现。

原因分析：一是传统污水厂建设模式与城市生态空间割裂，公共开放空间有限；二是再生水输配体系尚不完善，水资源循环利用链条未打通；三是公众对污水资源化的认知度低，环保设施的社会教育功能未充分释放。

改进目标：以“绿色、智慧、创新、共享”为理念，建设西北首座半地下式花园再生水厂，实现三大转变：从“邻避”到“邻利”的空间融合、从“达标排放”到“资源循环”的效能提升、从“封闭设施”到“开放平台”的功能拓展，打造黄河流域生态保护与高质量发展的“银川样本”。

 

Project Implementation

2.1 Addressing Low Spatial Utilization Efficiency and the NIMBY Issue – Adopting a "Underground Treatment + Aboveground Park" Composite Design

The project employs a semi-underground structural design, with the entire wastewater treatment process chain placed underground and the top of the treatment tanks designed as an open ecological park. The facility covers a total area of 31.6 hectares, with 19 hectares of green space and 80% designated as public open space. Drawing on the "dual-ground-floor" design concept, the project ensures that public recreational activities and plant operations remain mutually independent, enabling orderly spatial superposition of diverse user activities and maximizing land resource utilization. Aboveground ancillary facilities include an artificial lake, rain gardens, a children's playground, and jogging trails.

2.2 Addressing Low Reclaimed Water Reuse Rates and Pressure on Effluent Quality Discharged into the Yellow River – Establishing a Regional Reclaimed Water Recycling and Reuse System

The project adopts the "AAO + high-efficiency sedimentation tank + V-type sand filter" treatment process, with effluent quality consistently meeting the quasi-Class IV surface water standard. This represents a reduction efficiency improvement of over 40% compared to the Class I A standard of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). The annual reclaimed water reuse volume exceeds 50 million tonnes, ensuring sufficient ecological baseflow for key river channels and achieving full compliance with downstream water quality assessment requirements. The reclaimed water replaces fresh water drawn from the Yellow River for applications including landscaping, industrial recirculating cooling, and municipal miscellaneous uses, thereby enhancing the regional water resource carrying capacity. Following project commissioning, Yinchuan's reclaimed water reuse rate increased from 11% to 58% (as of the end of April 2024). Furthermore, the project design fully accounts for sudden increases in water volume during flood seasons; since its commissioning, no urban waterlogging has occurred in the service area.

2.3 Addressing Low-Carbon Operation and Energy Conservation and Carbon Reduction Requirements – Implementing a Smart Low-Carbon Operation and Management Model

Leveraging Beijing Enterprises Water Group's proprietary "BECloud" smart cloud platform, digital twin technology, and precision control systems, the project has established a centralized control center that enables real-time monitoring, remote operation and maintenance, early warning and alarm functions, and big-data-based analysis and regulation through digital management tools. The implementation of "peak-valley shifting operation" optimizes electricity consumption by taking full advantage of peak and off-peak tariff periods, reducing the unit electricity cost from RMB 0.24/tonne to RMB 0.22/tonne. The "smart aeration" system automatically adjusts airflow in response to influent loading, reducing the system's specific energy consumption from 0.46 kWh/tonne to 0.4 kWh/tonne. The "intelligent chemical dosing" system employs feedforward plus feedback automatic control, reducing chemical consumption by 10%. Overall operational energy consumption is reduced by over 20% compared to conventional wastewater treatment plants. The project fully utilizes thermal energy from wastewater: a water-source heat pump system achieves self-sufficiency in heating and cooling for 18,000 m² of plant buildings, while a wind-solar hybrid lighting system covers all roadways and outdoor areas across the facility, saving approximately 800,000 kWh of lighting electricity annually. In addition, platform data is interfaced with district-level and municipal-level regulatory platforms to enable data sharing and coordinated supervision.

2.4 Addressing Insufficient Public Awareness of Environmental Protection – Establishing a Multi-Dimensional Environmental Science Popularization and Education Platform

The project incorporates a dedicated environmental education exhibition hall, which also serves as a water conservation and water resources education base for youth (the first of its kind in Northwest China), a government-enterprise co-built exhibition hall, a Centennial Party History cultural corridor, and a water-conservation-themed park. Utilizing diverse presentation formats including physical models, simulation dioramas, display panels, interactive projections, and VR experiences, the platform enhances public understanding and awareness of water resources and aquatic ecological environmental protection. Three differentiated guided tour scripts have been developed – namely, the "government official reception version," the "primary and secondary school study tour version," and the "general public science popularization version" – supported by one full-time docent. The project team has independently developed a series of interactive educational courses, including "Microorganisms in Wastewater," "Water Nourishes Society," and "Water Sustains All Life." Since its public opening, the facility has conducted over 280 on-site open events, receiving more than 5,000 visitors to date. In 2024 alone, 72 open events were held with 1,400 participants, comprising 46 government inspection visits, 5 joint Party-building activities, 7 study tour events, and 19 visits by social organizations. The project has established study tour collaboration mechanisms with three schools in Yinchuan and has co-organized over ten thematic events – such as "World Water Day," "China Water Week," "World Environment Day (June 5)," and "Yellow River Protection Month" – in partnership with the Department of Ecology and Environment of Ningxia Hui Autonomous Region, the Yinchuan Water Affairs Bureau, and other relevant authorities.

项目实施

（一）针对空间利用低效与邻避问题——采取“地下净水+地上公园”复合设计

项目采用半地下式结构设计，将污水处理工艺置于地下，池体顶部设计为开放式生态公园，占地面积31.6公顷，绿化面积19公顷，公共开放空间达80%。借鉴“双首层”设计理念，使市民休闲娱乐与水厂生产运行互不干扰，真正做到不同人群的活动空间有序复合叠加，极致利用土地资源。地面配套建设人工湖区、雨水花园、儿童乐园、运动步道等公共设施。

（二）针对再生水利用率低与入黄水质压力——构建区域再生水循环利用体系

项目采用“AAO+高效沉淀池+V型砂滤池”工艺，出水水质达到地表准Ⅳ类标准，较《城镇污水处理厂污染物排放标准》一级A标准减排率提升40%以上。年再生水回用量5000万吨以上，保障重点河道生态流量充足，下游水质考核全面达标；再生水回用置换新鲜黄河水，用于园林绿化、工业循环、市政杂用等，提高区域水资源承载力。项目运行后，银川市再生水利用率由11%提升至58%（截至2024年4月底）。此外，项目在设计上充分考虑汛期水量骤增情况，投用后服务片区再未发生城市内涝。

（三）针对低碳运营与节能降碳需求——推行智慧化低碳管理模式

项目依托北控水务自主研发的“BECloud”智慧云平台、数字双胞胎及精确控制系统，建成管控中心，通过数字化管理工具实现实时监测、远程运维、监控预警及大数据分析调控。实施“错峰运行”，充分利用峰平谷用电模式，用电成本由0.24元/吨降至0.22元/吨；“智慧曝气”根据进水负荷自动调节风量，系统电单耗由0.46KWh/吨降至0.4KWh/吨；“智能加药”采用前馈+反馈自动控制，药剂使用量降低10%。综合运行能耗比传统污水处理厂节省20%以上。项目充分利用污水热能，水源热泵技术实现厂内1.8万平方米供暖制冷自给自足；风光一体照明系统覆盖全厂道路及户外区域，年节约照明用电约80万kWh。同时，项目将平台数据接入区级、市级监管平台，实现数据共享与联动。

（四）针对公众环保认知不足——打造立体化环保科普教育平台

项目配套建设环保教育展厅暨青少年节水惜水教育基地（属西北地区首创）、政企共建展厅、百年党史文化长廊及节水主题公园，通过模型、仿真沙盘、展板、互动投影、VR体验等多种展现形式，增加公众对水资源和水生态环境保护的认识和理解。设置“政务接待版”“中小学研学版”“大众科普版”三类差异化讲解词，配备专职讲解员1人，自主研发“污水中的微生物”“水润社会”“水生万物”等系列互动课程。自开放以来累计开展线下开放280余次，接待公众超5000人次；2024年全年开放72次、接待1400人次，其中政府调研46次、联合党建5次、研学活动7次、社会团体参观19次。与银川市3所学校建立研学共建机制，联合自治区生态环境厅、银川市水务局等部门开展“世界水日”“中国水周”“六五环境日”“黄河保护月”等主题活动10余次。

 

Project Outcome

Significant Pre- and Post-Implementation Comparison:

Following project commissioning, the annual reclaimed water reuse volume exceeds 50 million tonnes. The project achieves annual reductions of pollutants discharged into the Yellow River, including 2,190 tonnes of chemical oxygen demand (COD), 383 tonnes of ammonia nitrogen (NH₃-N), and 22 tonnes of total phosphorus (TP), while eliminating black-odorous water bodies. The public open space accounts for 80% of the total site area, with 19 hectares of greening within the plant premises and 14.8 hectares of green space open to the public, successfully transforming the facility from a "NIMBY" (Not In My Backyard) installation into a "YIMBY" (Yes In My Backyard) park cherished by local residents. Since the wastewater treatment plant commenced operation, no urban waterlogging has occurred in the service area. The project's construction cost per tonne of treatment capacity is RMB 5,000, delivering a high cost-performance landscape-integrated sunken water plaza. The operational availability rate of over 12,000 pieces of equipment across the facility remains at 100%, and the staffing level is less than one person per tonne of treatment capacity.

Notable Innovations:

Institutional Innovation: The project has established an integrated operational model encompassing "facility + platform + park + study tour," forming a "five-in-one" architecture that covers institutional standards, operational mechanisms, curriculum systems, interpretive content, and digital platforms. The project fully applies life-cycle Building Information Modeling (BIM), leveraging Beijing Enterprises Water Group's proprietary holographic design platform, project management platform, and smart water platform to efficiently coordinate project construction and ongoing operational services.

Technological Innovation: The project employs core technologies including rapid-settling sludge fermentation and a seven-stage combined biochemical process. The "peak-valley shifting operation" reduces electricity costs by 8%; the "smart aeration" system lowers the system's specific energy consumption by 13%; and the "intelligent chemical dosing" system reduces chemical consumption by 10%. Sludge is dewatered via plate-and-frame filter presses to reduce moisture content to below 70% (compared to the standard requirement of 80%), with total carbon emission intensity decreasing by 17% year-on-year.

Model Innovation: The project has pioneered a three-tier differentiated interpretive framework encompassing "government official reception + primary and secondary school study tours + general public science popularization," and has developed a series of educational courses such as "Microorganisms in Wastewater," realizing a segmented and differentiated public participation model.

Sustainability and Replicability:The project has established a replicable and scalable development model characterized by "underground treatment + aboveground park," along with a low-carbon operational approach incorporating "peak-valley shifting operation, smart aeration, and intelligent chemical dosing." This serves as a demonstration benchmark for green and low-carbon development for water-scarce cities across China.

成果亮点

实施前后对比显著：项目实施后，年再生水回用量超5000万吨，每年削减入黄污染物化学需氧量2190吨、氨氮383吨、总磷22吨，消除黑臭水体。公共开放空间达80%，厂区绿化面积19公顷，对外开放绿地14.8公顷，从“邻避”设施成功转变为市民喜爱的“邻利”公园。污水处理厂投用后，服务片区再未发生城市内涝。项目吨水建设费用5000元，打造高性价比景观型下沉水广场，全场12000余套设备日常运营完好率100%，吨水用工人数不足1人。

创新性亮点突出：

机制创新：建立“设施+平台+公园+研学”一体化运行模式，形成覆盖制度标准、运营机制、课程体系、讲解内容、数字平台的“五维一体”架构。项目全面应用全生命周期BIM，依托北控水务自主研发的全息设计平台、项目管理平台及智慧水务平台，高效统筹项目建设及运行服务。

技术创新：项目应用速沉污泥发酵、七段式生化组合工艺等核心技术。采用“错峰运行”降低用电成本8%，“智慧曝气”降低系统电单耗13%，“智能加药”降低药剂使用量10%。污泥经板框脱水将含水率降至70%（标准为80%）以下，总碳排放强度同比下降17%。

模式创新：创新“政务接待+中小学研学+大众科普”三层差异化讲解体系，研发“污水中的微生物”等系列课程，实现分众化、差异化的公众参与模式。

持续性与可复制性：项目已形成可复制推广的“地下净水+地上公园”建设模式，以及“错峰运行、智慧曝气、智能加药”低碳运营方案，为全国缺水型城市提供了绿色低碳发展示范样板。

 

Project Highlights

Ecological and Environmental Benefits:

The project's effluent quality consistently meets the quasi-Class IV surface water standard. With a designed treatment capacity of 300,000 tonnes per day and effluent quality conforming to the quasi-Class IV standard, the pollutant reduction efficiency is improved by over 40% compared to the conventional Class I A standard. The project achieves annual reductions of pollutants discharged into the Yellow River, including 2,190 tonnes of COD, 383 tonnes of ammonia nitrogen (NH₃-N), and 22 tonnes of total phosphorus (TP) (calculated with reference to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002) and the Environmental Quality Standards for Surface Water (GB 3838-2002), based on operational data from April 2022 to June 2024). The annual reclaimed water reuse volume exceeds 50 million tonnes, replacing fresh water drawn from the Yellow River for industrial, agricultural, and ecological replenishment uses, while ensuring sufficient ecological baseflow for key river channels. The project achieves an annual carbon emission reduction of approximately 2,000 tonnes.

Social Impact Outcomes:

The project pioneers an innovative "underground treatment + aboveground park" model, transforming the traditional "NIMBY" facility into a comprehensive public open space that integrates sports and recreation for citizens, children's entertainment, and environmental education. This creates a vibrant community hub, living circle, and ecological zone radiating across the surrounding area, achieving harmonious "coexistence and integration" between the wastewater treatment plant and its adjacent environment. The project has conducted over 280线上线下 open events (combining both on-site and virtual formats), receiving more than 5,000 visitors to date. It has been recognized as one of the "2024 Top Ten Model Facilities for Public Opening" and has been featured in over 200 mainstream media reports, including CCTV's Discovery Journey, Xinhua Net, China Environment News, and Xuexi Qiangguo (a prominent Chinese official media platform). The project provides a replicable model for the industry, demonstrating the deep integration of green, low-carbon development with meaningful public participation.

成果影响力

生态环境效益：项目出水水质稳定达到地表准Ⅳ类标准，设计处理规模30万吨/日，出水执行准Ⅳ类标准，较传统一级A标准减排率提升40%以上。每年削减入黄COD 2190吨、氨氮383吨、总磷22吨（核算标准：参照《城镇污水处理厂污染物排放标准》GB18918-2002及《地表水环境质量标准》GB3838-2002，运营数据自2022年4月至2024年6月）。年再生水回用量5000万吨以上，置换新鲜黄河水用于工业、农业及生态补水，保障重点河道生态流量充足。项目年碳减排量约2000吨。

社会影响效果：项目创新“地下净水+地上公园”模式，将传统“邻避”设施转化为市民运动休闲、儿童娱乐、环保教育于一体的综合性开放场所，形成辐射片区的活力圈、生活圈及生态圈，实现污水处理厂与周边环境的“共融共生”。项目累计开展线上线下开放活动280余次、接待公众超5000人次，被评为“2024年十佳环保设施开放单位”，被央视《发现之旅》、新华网、中国环境报、学习强国等主流媒体报道200余次，为行业提供了绿色低碳与公众参与深度融合的可复制经验。

 

Reviews & Honors

Evaluation Feedback:

The project has received widespread acclaim from visitors. Multiple media outlets have conducted interviews with citizens visiting the park, with one visitor remarking: "We had no idea that a wastewater treatment plant lies beneath this park—there is absolutely no odor, the environment is tranquil, and it offers excellent value for leisure and recreation." Secondary school students who participated in study tours expressed that the hands-on practical activities allowed them to witness every stage of the wastewater treatment process firsthand and deepened their appreciation for the importance of water resources conservation.

Media and Industry Recognition:

CCTV's Discovery Journey channel aired a special documentary on the project.

Xinhua Net's "One" View of China column featured a special report on the project's construction achievements.

China Environment News published a special feature titled "Beautiful Ningxia Tour" reporting on the project's public opening experience.

The project has been covered in over 200 reports by central and local mainstream media outlets, including Xuexi Qiangguo, People's Daily, China Water Resources News, and Ningxia Daily.

Awards and Honors:

Fifth Session "Dual-Hundred Leap" Socialization Benchmark Title

2026 Green and Low-Carbon Development Case

National Outstanding Engineering Survey and Design Award

2025 Typical Engineering Project Case of the China Urban Water Supply and Drainage Association

National Replicable Experience List for Child-Friendly Urban Spaces

2024 Top Ten Model Facilities for Public Opening (jointly selected by the Ministry of Ecology and Environment and the Central

Note: Please confirm the exact English name of the co-selecting authority; announced on World Environment Day, June 5, 2024)

2023 Outstanding Activity of the "Water Conservation in China, Action by All" Joint Campaign (National Office of Water Conservation)

2024 Municipal Engineering Highest Quality Level Evaluation Project

2022 Ningxia Hui Autonomous Region "Xixia Cup" Quality Project (the highest engineering construction award at the autonomous region level)

2022 Autonomous Region-Level Construction Industry Quality Standardization Demonstration Project

"Smart Construction Cup" China Smart Construction Application Competition – Gold Award

"Building Smart Hong Kong" 7th International BIM Awards – Platinum Award for Best Water Plant Project

China Construction Industry Association 2022 Green Construction Competition for Construction Projects – Third Prize

National Construction Project Construction Site Work Safety Standardization Learning and Exchange Project (the highest honor for safety and civilized construction in China's domestic construction industry)

评价与荣誉

评价反馈：项目受到参观者广泛好评。多家媒体对在公园游玩的市民进行采访，市民反馈：“我们竟不知这下面是污水处理厂，一点味道都闻不到，环境幽静，休闲娱乐性价比极佳。”参与研学的中学生表示，实践活动让他们亲眼见证了污水处理的每一个环节，感受到水资源保护的重要性。

媒体与行业认可：央视《发现之旅》频道播出专题纪录片；新华网《“一”见中国》栏目专题报道项目建设成效；中国环境报《美丽宁夏行》专题报道项目开放经验；学习强国、人民日报、中国水利报、宁夏日报等中央及地方主流媒体报道200余次。

奖项荣誉：

第五期“双百跨越”社会化标杆称号

2026绿色低碳发展案例

全国优秀工程勘察设计奖

2025年度中国城镇供水排水协会典型工程项目案例

国家级城市儿童友好空间可复制经验清单

2024年十佳环保设施开放单位（生态环境部、中央社会工作部联合评选，2024年六五环境日公布）

2023年“节水中国、你我同行”联合行动优秀活动（全国节约用水办公室）

2024年度市政工程最高质量水平评价工程

2022年度宁夏回族自治区“西夏杯”优质工程（自治区工程建设最高奖）

2022年度自治区级建筑业质量标准化示范工程

“智建杯”中国智慧建造应用大赛金奖

“型建香港”第七届国际BIM大奖赛最佳水厂项目铂金奖

中国建筑业协会2022年度建设工程项目绿色建造竞赛活动三等奖

全国建设工程项目施工工地安全生产标准化学习交流项目（国内建筑行业安全文明施工最高荣誉）