NEW WORK ITEM PROPOSAL Closing date for voting Reference number (to be given by the Secretariat) Date of circulation Secretariat SAC ISO/TC 282 / SC 2 N 12 Proposal for new PC A proposal for a new work item within the scope of an existing committee shall be submitted to the secretariat of that committee with a copy to the Central Secretariat and, in the case of a subcommittee, a copy to the secretariat of the parent technical committee. Proposals not within the scope of an existing committee shall be submitted to the secretariat of the ISO Technical Management Board. The proposer of a new work item may be a member body of ISO, the secretariat itself, another technical committee or subcommittee, or organization in liaison, the Technical Management Board or one of the advisory groups, or the Secretary-General. The proposal will be circulated to the P-members of the technical committee or subcommittee for voting, and to the O-members for information. IMPORTANT NOTE: Proposals without adequate justification risk rejection or referral to originator. Guidelines for proposing and justifying a new work item are contained in Annex C of the ISO/IEC Directives, Part 1. The proposer has considered the guidance given in the Annex C during the preparation of the NWIP. Proposal (to be completed by the proposer) Title of the proposed deliverable. (in the case of an amendment, revision or a new part of an existing document, show the reference number and current title) English title Water Reuse in Urban Areas Guidelines for Centralized Water Reuse System: Part I Design Principle of a Centralized Water Reuse System French title (if available) Scope of the proposed deliverable. The guideline intends to provide design principles for the users who attempt to initiate centralized water reuse schemes or activities in urban areas. The guideline will involve the development of standard terms, definitions as well as the clarification of design principles that should be considered and applied in the reclaimed water planning, source, treatment, storage, distribution and monitoring parts. FORM 4 (ISO) v. 2013 Page 1 of 4
New work item proposal Purpose and justification of the proposal* Due to continuous economic and social development, growing population and rapid urbanization, water becomes a strategic resource in many areas of the world, especially in the arid and semi-arid regions. Water shortage is considered as one of the most important threats to the society and a constraint for its sustainable development. Nowadays, reclaimed water provides sufficient flexibility to satisfy short-term freshwater demands and increases the reliability of long-term water supplies in many water scarce areas. Water reuse in urban areas with applications such as landscape irrigation, toilet flushing, firefighting and car washing represents a significant and increasing consumption of reclaimed water in many countries. Because of its high economic and energy effiency, centralized water reuse systems are considered to be one of the best water management practices in urban areas, and have been increasingly developed and applied in large cities. The essential components of centralized water reuse systems include reclaimed water sources, treatment, distribution, storage, use, monitoring and management. As sources of reclaimed water are diverse, challenges need to be tackled with to ensure water safety and reliability in each system component. Moreover, different end users require different water quality, resulting in complicated water supply system. Despite that there are some local water reuse guidelines, there is still no uniform design principle for centralized water reuse systems in urban areas. Lack of uniform guidelines may lead to misjudgment, improper management or unsustainable development of water reuse projects. Therefore, this international standard provides design principles for centralized water reuse system in urban areas. It considers and addresses the critical issues or factors during designing different system components, which would facilitate water engineers, authorities, decision makers and stakeholders to determine the feasible and cost-effective approaches for safe and reliable fit-for-purpose water reuse. *The reason for requiring justification statements with approval or disapproval votes is primarily to collect input on market or stakeholder needs, and on market relevance of the proposal, to benefit the development of the proposed ISO standard(s). Any NSB vote in relation to a proposal for new work may result in significant commitments of resources by all parties (NSBs, committee leaders and delegates/experts) or may have significant implications for ISO's relevance in the global community. It is especially important that NSBs consider and express why they vote the way they do. In addition, it is felt that it would be useful for ISO and its committees to have documentation as to why the NSBs feel a proposal has market need and market relevance. Therefore, please ensure that your justifying statements with your approval or disapproval vote convey the reason(s) why your national consensus does or does not support the market need and/or global relevance of the proposal. If a draft is attached to this proposal,: Please select from one of the following options (note that if no option is selected, the default will be the first option): Draft document will be registered as new project in the committee's work programme (stage 20.00) Draft document can be registered as a Working Draft (WD stage 20.20) Draft document can be registered as a Committee Draft (CD stage 30.00) Draft document can be registered as a Draft International Standard (DIS stage 40.00) Is this a Management Systems Standard (MSS)? Yes No NOTE: if Yes, the NWIP along with the Justification study (see Annex SL of the Consolidated ISO Supplement) must be sent to the MSS Task Force secretariat (tmb@iso.org) for approval before the NWIP ballot can be launched. Indication(s) of the preferred type or types of deliverable(s) to be produced under the proposal. International Standard Technical Specification Publicly Available Specification Technical Report Proposed development track 1 (24 months) 2 (36 months - default) 3 (48 months) Known patented items (see ISO/IEC Directives, Part 1 for important guidance) Yes No If "Yes", provide full information as annex FORM 4 (ISO) v. 2013 Page 2 of 4
New work item proposal A statement from the proposer as to how the proposed work may relate to or impact on existing work, especially existing ISO and IEC deliverables. The proposer should explain how the work differs from apparently similar work, or explain how duplication and conflict will be minimized. ISO/TC 282/SC 1 (Guidelines for Treated Wastewater Use for Irrigation Projects) ISO/TC 282/SC 3 (Guidelines for Health Risk Assessment and Treatment for Reclaimed Water Use) This standard (ISO/TC 282/SC 2) deals with the water reuse in urban areas which will be related to the scope of the proposed standard. The role of SC2 is to secure the coherent approach in TC282 in the field of safe uses of reclaimed water in urban areas. At present, there will be no conflict expected among the three standards, but if any, it will be resolved within TC282. Moreover, there s no uniform standard of water reuse globally at present. This standard provides the specific users valuable guidance and design principles of centralized water reuse systems in urban areas. A listing of relevant existing documents at the international, regional and national levels. AQUAREC: Guideline for quality standards for water reuse in Europe, EVK1-CT-2002-00130, Work package Australian Guidelines for Water Recycling: Managing Health and Environmental Risks (2006) National Institute for Land and Infrastructure Management, Government of Japan: Report of the Microbial Water Quality Project on Treated Sewage and Reclaimed Wastewater (2008) Takashi Asano: Water reuse- Issues, Technologies, and Applications, Metcalf & Eddy (2007) USEPA: Guidelines for Water Reuse (2012) WHO: Guidelines for the Safe Use of Wastewater, Excreta and Greywater (2006) State of California: California codes- Water code section 13050, subdivision (2003) ISO/IWA 6: Guideline for the management of drinking water utilities under crisis conditions (2008) China: Guidelines for the reuse of urban recycling water -GB/T 18919-2002, The reuse of urban recycling water-classified standard -GB/T 18920-2002, The reuse of urban recycling water-water quality standard for urban miscellaneous water consumption -GB/T 18921-2002, The reuse of urban recycling water-water quality standard for scenic environment use -GB/T 19923-2005, The reuse of urban recycling water-water quality standard for industrial uses A simple and concise statement identifying and describing relevant affected stakeholder categories (including small and medium sized enterprises) and how they will each benefit from or be impacted by the proposed deliverable(s) Organizations, including medium or small sized enterprises, who conduct water reuse projects in urban areas without appropriate guidelines and regulations may result in misunderstanding or misjudgment of important issues, leading to project failure or unsustainable development. The future expansion of existing schemes or potential new end uses would also become difficult. This standard will facilitate them to undertake the appropriate steps and processes for centralized water reuse in urban areas with efficiency and cost effectiveness. It can not only benefit the stakeholders but also end users and the local community in the long term. Liaisons: A listing of relevant external international organizations or internal parties (other ISO and/or IEC committees) to be engaged as liaisons in the development of the deliverable(s). ISO/TC282/SC1, SC3 Joint/parallel work: Possible joint/parallel work with: IEC (please specify committee ID) CEN Other (please specify committee ID) (please specify) A listing of relevant countries which are not already P-members of the committee. Preparatory work (at a minimum an outline should be included with the proposal) A draft is attached An outline is attached An existing document to serve as initial basis The proposer or the proposer's organization is prepared to undertake the preparatory work required Yes No Proposed Project Leader (name and e-mail address) WU Guangxue (Assistant Professor) E-mail: wu.guangxue@sz.tsinghua.edu.cn Graduate School at Shenzhen, Tsinghua University, Shenzhen, China CHEN Jianhua (Associate Research Fellow) E-mail: chenjh@cnis.gov.cn China National Institute of Standardization, Beijing, China Name of the Proposer (include contact information) Ms. LI Yubing Secretary General, Chinese Member Body of ISO Fax: +86 10 8226 0660 E-mail: sac@sac.gov.cn FORM 4 (ISO) v. 2013 Page 3 of 4
New work item proposal Supplementary information relating to the proposal This proposal relates to a new ISO document; This proposal relates to the adoption as an active project of an item currently registered as a Preliminary Work Item; This proposal relates to the re-establishment of a cancelled project as an active project. Other: Annex(es) are included with this proposal (give details) Draft outline Water Reuse in Urban Areas Guidelines for Centralized Water Reuse system: Part I Design Principle of a Centralized Water Reuse System FORM 4 (ISO) v. 2013 Page 4 of 4
Water Reuse in Urban Areas Guidelines for Centralized Water Reuse System: Part I (Draft Outline*) *Note: This document is the modified version according to suggestions from the second meeting on 6 th November at Lisbon, Portugal 1. Introduction 2. Scope of the guideline 3. Normative references 4. Terms and definitions 5. Planning of centralized water reuse systems 5.1 Preparation, investigation, estimation of water supply-demand and review 5.1.1 Identification of quantity of the available reclaimed water 5.1.2 Screening for all existing and potential future users 5.2 Location 5.3 System components (source, treatment, distribution and storage, etc.) 6. Sources of reclaimed water and requirements 6.1 Type of reclaimed water sources 6.1.1 Raw municipal and domestic wastewaters 6.1.2 Treated effluent from WWTP 6.1.3 Other sources 6.2 Safety requirement of reclaimed water sources 6.2.1 Appropriate reclaimed water sources 6.2.2 Inappropriate reclaimed water sources 6.3 Reliability requirements 6.3.1 Water quantity (e.g., daily and seasonal variations, peaking coefficient, events) 6.3.2 Water quality (acceptable range) 6.4 Backup water resources 7. Reclaimed water treatment 7.1 Principle of designing the treatment system (economic, safety and reliability) 7.2 Possible models of treatment system 7.2.1 Model 1 (reclaimed water for single purpose) 7.2.2 Model 2 (reclaimed water for multiple purposes)
7.2.3 Model 3 (combination of treatment, storage and use, e.g., water bodies are used as reclaimed water treatment/storage reservoirs before subsequent uses) 7.2.4 Model 4 (cascade use) 8. Reclaimed water distribution systems 8.1 Components and models of reclaimed water distribution systems (pump stations and distribution networks) 8.2 Pump stations 8.2.1 Reclaimed water delivery pressure 8.2.2 Flow rate of reclaimed water 8.2.3 Others 8.3 Water distribution systems 8.3.1 Pipeline routes and materials 8.3.2 Water quality in distribution systems 8.3.3 Color-coding systems, water signs and labels 9. Reclaimed water storage systems 9.1 Storage types 9.1.1 Tank 9.1.2 Reservoir 9.1.3 Pond 9.2 Tank storage requirements 9.2.1 Size of storage tank and turnover requirements 9.2.2 Control of water quality 9.3 Open-storage requirements 9.3.1 Evaporation 9.3.2 Post-treatment facilities (e.g., re-chlorination) 9.3.3 Control of water quality (e.g., eutrophication) 10. Monitoring system 10.1 Monitoring sites and facilities 10.2 Reclaimed water source 10.3 Treatment 10.4 Distribution 10.5 Storage 10.6 User 10.7 Others
11. Emergency response plan 11.1 Reclaimed water source 11.2 Treatment 11.3 Distribution 11.4 Storage 11.5 Others 12. Others References
Water Reuse in Urban Areas Guidelines for Centralized Water Reuse System Guangxue Wu, Ph.D Graduate School at Shenzhen and School of Environment Tsinghua University, China *Note: This document is the modified version according to suggestions from the ISO/TC 282 SC2 second meeting on 6 th November at Lisbon, Portugal Background 2 1
Water Reuse in Urban Areas Centralized Water Reuse System Water Reuse System Centralized Water Reuse System Decentralized Water Reuse System* Centralized Water Reuse System Decentralized Water Reuse System *The decentralized part will be written separately in ISO guidelines in the future Water Reuse in Urban Areas Centralized Water Reuse System Centralized Water Reuse System Sustainable wastewater management practice Sustainable integrated urban management practice Lower capital and energy investment Minimized wastewater resource discharge 2
Water Reuse reuse in in Urban urban Areas areas centralized Centralized water Water reuse Reuse system System Successful Examples: Water Reclamation and Management Scheme (WRAMS) at Sydney Olympic Park, Sydney, Australia WRAMS is Australia s first large scale urban water recycling scheme Serves 2,000 houses in Newington area & sporting venues, saving 850 million litres of water per year Gaobeidian urban centralized water reuse in Beijing, China One of the largest municipal wastewater treatment plant in China Low operational expenses Gain profit by the design companies and the system owners Design Principle of a Centralized Water Reuse System 6 3
Concept The guideline will involve the development of standard terms, definitions as well as the clarification of design principles that should be considered and applied in the reclaimed water planning, source, treatment, storage, distribution and monitoring parts. Purposes The guideline intends to provide design principles for the users who attempt to initiate centralized water reuse schemes or activities in urban areas. 1. Introduction 2. Scope of the guideline 3. Normative references 4. Terms, definitions and abbreviated terms 5. Planning of centralized water reuse systems 6. Sources of reclaimed water and requirements 7. Reclaimed water treatment options 8. Reclaimed water distribution systems 9. Reclaimed water storage systems 10. Monitoring systems 11. Emergency response plan 12.Others References Treatment Framework Centralized Water Reuse System Planning and Design Distribution storage Monitoring and Management Use 4
1. Introduction 2. Scope of the guideline 3. Normative references 4. Terms, definitions and abbreviated terms 5. Planning of centralized water reuse systems 5.1 Preparation, investigation, estimation of water supply-demand and review Identification of quantity of available reclaimed water Screening of all existing and potential future users 5.2 Location 5.3 System components (source, treatment, distribution and storage) 6. Sources of reclaimed water and requirements 6.1 Types of reclaimed water sources Raw municipal and domestic wastewaters Treated effluent from WWTP Other sources 6.2 Safety requirement of reclaimed water sources Appropriate reclaimed water sources Inappropriate reclaimed water sources 6.3 Reliability requirement Water quantity (e.g., daily and seasonal variations, peaking coefficient, events) Water quality (acceptable range) 6.4 Backup water resources 5
7. Reclaimed water treatment 7.1 Principle of design of treatment system (economy, safety and reliability) 7.2 Possible models of treatment system Model 1 (reclaimed water for single purpose) Model 2 (reclaimed water for multiple purposes) Model 3 (combination of treatment, storage and use, e.g., water bodies are used as reclaimed water treatment/storage reservoirs before subsequent uses) Model 4 (cascade use) 8. Reclaimed water distribution systems 8.1 Components and models of reclaimed water distribution systems (pump stations and distribution networks) 8.2 Pump stations Reclaimed water delivery pressure Flow rate of reclaimed water Others 8.3 Water distribution system Pipeline routes and materials Water quality in distribution systems Color-coding systems, water signs and labels 6
9. Reclaimed water storage systems 9.1 Storage types Tank, reservoir and ponds 9.2 Tank storage requirements Storage tank sizing and turnover requirements Water quality control (e.g., degradation) 9.3 Open-storage requirements Evaporation Post-treatment facilities (e.g., re-chlorination) Water quality control (e.g., eutrophication) 10. Monitoring systems 10.1 Monitoring sites and facilities 10.2 Reclaimed water source 10.3 Treatment 10.4 Distribution 10.5 Storage 10.6 User 10.7 Others 7
11. Emergency response plan 11.1 Reclaimed water source 11.2 Treatment 11.3 Distribution 11.4 Storage 11.5 Others 12. Others References Thank you very much for your attention! 8