All categories
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PART I INTRODUCTION
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PART II INSTITUTIONAL AND REGULATORY FRAMEWORK
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2.INSTITUTIONAL, POLICY, REGULATORY FRAMEWORK FOR RURAL SANITATION AND WASTEWATER MANAGEMENT
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2.1 Overview
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2.2.Institutional Arrangement
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2.3.Policies and Regulations
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2.4 Discharge Standards
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2.5.Sources of funds
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2.6.Typical provincial cases
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2.7.Conclusions and recommendations
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PART III TECHNICAL BASIS
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3 Overview of Rural Sanitation and Wastewater Management
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3.1 Domestic Wastewater
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3.2 Rural Toilets in China – Source of Black Water
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3.3 Decentralized vs. Centralized Rural Wastewater Management
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4 Rural Wastewater Treatment Technology
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4.1 Preliminary Treatment
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4.2. Primary Treatment
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4.3 Secondary Treatment
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4.3.1 Attached Growth Process
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4.3.2 Suspended growth Process
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4.3.3 Waste Stabilization Pond
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4.3.4 Constructed Wetlands
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4.3.5 Subsurface Wastewater Infiltration Systems
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5 Wastewater Treatment Process Design
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5.1 General Design Consideration
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5.2 Sewage Collection Alternatives
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5.3 Wastewater Treatment Process Design
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5.4 Water Reuse
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5.5 Sludge Management
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PART IV PROJECT PLANNING AND DESIGN
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6 Project Planning and Design
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6.1 Diagnosis for Project Villages – Initial Community Assessment
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6.2 Establishment of Stakeholder Group
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6.3 Assessment on Existing Conditions and Community’s Capacity
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6.3.1 Physical Conditions Assessment
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6.3.2 Community’s Capacity Assessment
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6.4 Baseline Engineering Survey and Assessment
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6.5 Project Feasibility Study and Environmental Impact Assessment
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6.6 Selection of Operation Model
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6.7 Project Cost Estimate
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7 Community Participation
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7.1 Why Need Community Participation?
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7.2 Principles of Community Participation
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7.3 Community Participation Activities
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PART V PROJECT FINANCING
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8 Financing, Subsidies, and Cost Recovery
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8.1 Programmatic Costs
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8.2 Project Implementation Costs
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8.3 Project Financing
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8.4 Subsidies
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8.5 Cost Recovery
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PART VI PROJECT IMPLEMENTATION AND MANAGEMENT
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9 Procurement and Implementation
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9.1 Procurement Principles
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9.2 Procurement Alternatives
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9.3 Procurement Planning
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10 System Adminstration, Operation, Maintenance and Monitoring
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10.1 Introduction
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10.2 Management and Administration Arrangement
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10.3 Operation and Maintenance
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10.4 Reporting and Monitoring
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10.5 Operator Training and Support
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Appendix: Case Studies – Rural Wastewater Management in Zhejiang, Shanxi, and Jiangsu Province
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1.Zhejiang Province
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2.Shanxi Province
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3.Jiangsu Province
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4.Summary
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REFERENCES
6.4 Baseline Engineering Survey and Assessment
- Categories: 6 Project Planning and Design
- Time of issue: 2022-04-28 20:23:56
- Views: 0
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Information
Once the existing conditions and community capacity assessments are completed, field engineering and surveying work is required to obtain accurate baseline information about each village. This work will involve the following tasks:
- Topographic Survey and Base Map. Conducting a topographic survey and preparation of an accurate base map of the village and potential land disposal areas. The land survey should be completed to an appropriate scale and sufficient detail to allow for planning and ultimate design of the improvements. The contour interval of the topographic map should be as small as feasible. In very steep terrain with significant topographic changes a contour interval of 2 to 4 meters may be sufficient, whereas, in low gradient areas a maximum of 0.5-meter intervals should be used. The topographic survey should show major features including buildings, roads, paths, bridges, water courses (streams and rivers), drainage courses, large trees, utilities, and other features that may affect the project.
- Geology, Soil and Groundwater Study. A geotechnical investigation is required to evaluate soil and groundwater conditions in areas selected for individual home (decentralized) and/or for community (centralized) land disposal systems. The investigation should include the characterization and testing of soils to determine the adsorptive capacity of the soils in the area of the proposed disposal system. The investigation should assess shallow groundwater conditions and identify any potential geohazards, such as, landslides, which need to be avoided. The detailed scope of the geotechnical investigation will depend on the size of the community and complexity of the geology, soil and groundwater conditions.
- Field Engineering Assessment. Once the topographic survey is completed the design engineers should conduct a field engineering study to assess and refine the definition of field conditions, housing density, site accessibility, and constructability issues or constraints that should be considered in the selection of appropriate sanitation improvements.
