The impact of the project will be improved urban water environment, public health, and quality of life for urban residents in the Huainan municipality. The outcome of the project will be improved management of surface water resources in the Huainan municipality. The project will have the following components which are all linked to each other:
Component 1: Improvement of wastewater collection and transmission systems. This component will include installation of 115.2-kilometer (km) new main wastewater collection and transmission pipes in the eastern area of the Huainan municipality, and installation of 63.7-km new main wastewater collection and transmission pipes and construction of three new pump stations for wastewater transmission in the western area.
Component 2: Improvement of urban water channels. This component will include improvement of existing 7.6-km Bagongshang water channel, 8.7-km Xiejiaji water channel, 13.8-km Donghua water channel, 0.5-km Old Longwang water channel, and 3.5-km Longwang water channel; and construction of a new 8.1-km Longwang flood diversion water channel. Activities under this component will include (i) sludge removal from the five existing urban water channels; (ii) improvement or construction of the water channels to improve the urban water environment and increase flood flow capacity to meet 1/20 year-level storm water; (iii) installation of new wastewater collection and transmission pipes along the channels to intercept wastewater inflow into the channels; and (iv) promotion of international best practices of nonstructural measures, such as reduction of garbage dumping along the channels and their tributaries; setting and securing of environmental flow in the channels; sustainable maintenance of the channels; monitoring of water quality and ecosystem; and capacity and institutional strengthening.
Component 3: Improvement of lakes and wetlands. This component will include two subcomponents. Subcomponent 3.1: Increase of flood control capacities will include construction of 13-km embankments and four pump stations along Gaotang Lake, improvement of the Dajiangou and Long Lake pump stations, and reconstruction of the Caozhuizi and Shijian Lake pump stations to increase flood control capacities to meet 1/20 year-level storm water. Subcomponent 3.2: Improvement of water environment will include improvement of water environment in Gaotang Lake, Dajiangou wetland, Long Lake, Caoling Lake, and Shijian Lake. Activities to improve water environment may include, but are not limited to, (i) sludge removal (footnote 3); (ii) plantation for water self-purification; and (iii) promotion of international best practices of nonstructural measures, such as monitoring of water quality and ecosystem; species recovery; public awareness raising and education; and capacity and institutional strengthening.
Component 4: Project management support and capacity development. Activities under this component will include (i) consultants' support for project management; (ii) institutional and capacity strengthening for project management, and operation and maintenance of the infrastructure; and (iii) provision of equipment for project management.
|Project Rationale and Linkage to Country/Regional Strategy
The Huainan municipality of Anhui province located at the midstream of Huai River is a main coal base of the People's Republic of China (PRC) and also an important industrial area of Anhui province. It has an area of 2,596 square kilometers (km2), of which urban area is 1,566.4 km2; and a population of 2.46 million. Through the implementation of two key development strategies the Hefei Economic Circle and the Urban Integration of Hefei and Huainan, the economic development of the Huainan municipality has been making great progress. However, rapid economic development has resulted in heavy pollution load, particularly wastewater, to existing urban water systems in the Huainan municipality, including urban water channels and lakes, which have been clogged with sludge and severely polluted. The urban water systems also do not have sufficient capacity for flood control, and the Huainan municipality suffers flood damage once in 2 years on average. The Huainan municipal government (HMG) has been implementing various activities to improve the urban water systems, including improvement of wastewater treatment systems, annual dredging of urban water channels and lakes, public awareness raising to reduce garbage dumping, partial improvement of urban water channels and drains to increase flood flow capacity associated with road improvements, preparedness for and emergency response to floods, and post flood recovery. Although much improvement has been made, the Huainan municipality still has fundamental problems, including (i) insufficient wastewater treatment systems; (ii) wastewater inflow into urban water channels and lakes, sludge sediment, and water quality deterioration; and (iii) insufficient flood control capacities of urban water channels and other flood control facilities.
To facilitate the development of the Huainan municipality, the Huainan Municipality Master Plan for 2010 2020 was prepared by the HMG and approved by the provincial and central governments. The master plan sets targets for 2020 for wastewater treatment (treatment rate of more than 90%), water environment (water quality in the urban water systems improved to class IV or above of the PRC water quality standards), and flood management (flood frequency in the urban area reduced from 1/2 years to 1/20 years). To implement components of the master plan related to the urban water systems, the HMG made a request to the Asian Development Bank (ADB) for investment and assistance for the Anhui Huainan Urban Water Systems Integrated Rehabilitation Project. The proposed project was included in ADB's country operations business plan 2012 2014 and the 2013 lending pipeline for the PRC.
The PRC's 12th Five-Year Plan (2011 2015) supports the long-term goal of building a harmonious and moderately prosperous (xiaokang) society through livelihood improvement, and regionally balanced and environmentally sustainable growth. ADB's country partnership strategy for the PRC for 2011 2015 supports the government's overarching strategic goal of building a xiaokang society by focusing on three strategic pillars: inclusive growth, environmentally sustainable growth, and regional cooperation and integration. The proposed project is fully consistent with the PRC's 12th Five-Year Plan and ADB's country partnership strategy by improving urban water environment, public health, and quality of life.
ADB has been conducting projects for wastewater treatment, urban development, and flood and water resources management in the PRC and other countries, and lessons learned from those projects will be reflected in the project design adding values to the project. A main value to be added to the project by ADB will be promotion of international best practices of nonstructural measures for water environmental improvement.