1、NSF International Standard / American National StandardNSF/ANSI 350 - 2017 Onsite Residential and CommercialWater Reuse Treatment SystemsNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-bas
2、ed risk management solutions while serving the interests of all stakeholders. This Standard is subject to revision. Contact NSF to confirm this revision is current. Users of this Standard may request clarifications and interpretations, or propose revisions by contacting: Chair, Joint Committee on Wa
3、stewater Technology c/o NSF International 789 North Dixboro Road, P.O. Box 130140 Ann Arbor, Michigan 48113-0140 USA Phone: (734) 769-8010 Telex: 753215 NSF INTL FAX: (734) 769-0109 E-mail: infonsf.org Web: http:/www.nsf.org i NSF/ANSI 350 2017 NSF International Standard/ American National Standard
4、for Drinking Water Additives Onsite residential and commercial water reuse treatment systems Standard Developer NSF International NSF International Designated an ANSI Standard August 26, 2016 American National Standards Institute ii Prepared by The NSF Joint Committee on Wastewater Technology Recomm
5、ended for Adoption by The NSF Council of Public Health Consultants Adopted by The NSF Board of Trustees July 2011 Revised December 2012 Revised December 2014 Revised February 2017 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inqu
6、iries with regard to this Standard, please reference the designation “NSF/ANSI 350 2017.” Copyright 2015 NSF International Previous editions 2015, 2014, 2012 Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, i
7、ncluding photocopying and microfilm, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1 NSF International (NSF), in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of
8、 the manufacturer or any other party. The opinions and findings of NSF represent its professional judgment. NSF shall not be responsible to anyone for the use of or reliance upon this Standard by anyone. NSF shall not incur any obligation or liability for damages, including consequential damages, ar
9、ising out of or in connection with the use, interpretation of, or reliance upon this Standard. NSF Standards provide basic criteria to promote sanitation and protection of the public health. Provisions for mechanical and electrical safety have not been included in this Standard because governmental
10、agencies or other national standards-setting organizations provide safety requirements. Participation in NSFs Standards development activities by regulatory agency representatives (federal, local, state) shall not constitute their agencys endorsement of NSF or any of its Standards. Preference is giv
11、en to the use of performance criteria measurable by examination or testing in NSF Standards development when such performance criteria may reasonably be used in lieu of design, materials, or construction criteria. The illustrations, if provided, are intended to assist in understanding their adjacent
12、 standard requirements. However, the illustrations may not include all requirements for a specific product or unit, nor do they show the only method of fabricating such arrangements. Such partial drawings shall not be used to justify improper or incomplete design and construction. Unless otherwise r
13、eferenced, the annexes are not considered an integral part of NSF Standards. The annexes are provided as general guidelines to the manufacturer, regulatory agency, user, or certifying organization. 1 The information contained in this Disclaimer is not part of this American National Standard (ANS) an
14、d has not been processed in accordance with ANSIs requirements for an ANS. As such, this Disclaimer may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. This page is intentio
15、nally left blank. v Contents 1 General . 1 1.1 Purpose 1 1.2 Scope 1 1.3 Alternate materials, design, and construction 1 1.4 Performance classification 2 2 Normative references . 2 3 Definitions . 4 4 Materials . 4 4.1 Interior surfaces 5 4.2 Exterior surfaces 5 4.3 Welding 5 4.4 Dissimilar metals 5
16、 5 Design and construction . 5 5.1 Exposed surfaces . 5 5.2 Structural integrity 5 5.3 Water tightness 6 5.4 Noise 6 5.5 Mechanical components 6 5.6 Electrical components 6 5.7 Access ports . 6 5.8 Failure sensing and signaling equipment. 7 5.9 Flow design 8 5.10 Dataplate and service label . 8 6 Pr
17、oduct literature 9 6.1 Owners manual . 9 6.2 Additional product literature . 10 7 Other documentation 11 8 Performance testing and evaluation . 11 8.1 Graywater treatment systems with capacities up to 5,678 L/day (1,500 gal/day) . 11 8.2 Residential wastewater treatment systems/capacities 18 8.3 Com
18、mercial treatment systems with combined wastewater flows . 21 8.4 Sample collection 21 8.5 Analyses 22 8.6 Criteria 23 9 Final report 26 Annex A . A1 Annex B . B1 Annex C .C1 Annex D .D1 Annex E . E1 vi This page is intentionally left blank.vii Foreword2 This American National Standard, NSF/ANSI 350
19、 Onsite residential and commercial water reuse treatment systems, has been developed as part of the ongoing efforts of interested parties to establish minimum material, design and construction, and performance requirements for onsite residential and commercial water treatment systems. This Standard
20、also specifies the minimum literature that manufacturers shall supply to authorized representatives and owners as well as the minimum service-related obligations that a manufacturer shall extend to owners. This Standard is intended to address publich health and environmental issues. Actual performan
21、ce for any site or system may vary, depending on variations in raw water supply (such as in alkalinity and hardness), graywater constituents, and patterns of use. The end use of the effluent is the responsibility of the owner, design professionals, and regulatory officials. Management methods and en
22、d uses appropriate for the treated effluent discharged from onsite residential and commercial treatment systems meeting Class R (single family residential) or Class C (multi-family and commercial facilities) requiremens of this Standard include indoor restricted urban water use, such as toilet and u
23、rinal flushing, and outdoor unrestricted urban water use, such as surface irrigation. Systems may include: Graywater treatment systems having a rated treatment capacity up to 5,678 L/day (1,500 gal/day): this applies to onsite residential and commercial treatment systems that treat graywater, those
24、that treat laundry water from residential laundry facilities, and those that treat bathing water. Resdential wastewater treatment systems having a rated treatment capacity up to 5,678 L/day (1,500 gal/day): this applies to onsite residential treatment systems that treat combined wastewater generated
25、 by the occupants of residence(s). A reuse system treating 1,514 L/day (400 gal/day) to 5,678 L/day (1,500 gal/day) shall either be demonstrated to have met the Class I requirements of NSF/ANSI 40 Residential wastewater treatment systems, or shall meet these requirements during concurrent testing to
26、 this Standard. A treatment system treating less than 1,514 L/day (400 gal/day) shall not be required to have met the Class I requirements of NSF/ANSI 40. Commercial treatment systems: this applies to onsite commercial treatment systems that treat combined commercial facility wastewater and commerci
27、al facility laundry water of any capacity, and those treatment systems that treat graywater from commercial facilities with capacities exceeding 5,678 L/day (1,500 gal/day). These systems shall be performance tested and evaluated at the location of the reuse system installation, using the wastewater
28、 generated onsite from the facility serving the treatment system. See 8.3 for performance testing and evaluation. The key elements of a field evaluation of a commercial onsite treatment system are described in Annex A. This edition of NSF/ANSI 350 includes the following issues: Issue 9 Revision of s
29、ection 8 sample frequency. Issue 11 Add modifications to the language of section 8 to clarify and define the stress loading in each stress condition. Issue 13 This modifies the language in Standard 350 regarding sampling requirements. 2 The information contained in this Foreword is not part of this
30、American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. As such, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to th
31、e Standard. viii This Standard was developed by the NSF Joint Committee on Wastewater Technology using the consensus process described in the American National Standards Institute. Suggestions for improvement of this Standard are welcome. This Standard is maintained on a Continuous Maintenance sched
32、ule and can be opened for comment at any time. Comments on this Standard should be sent to Chair, Joint Committee on Wastewater Technology at standardsnsf.org, or c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan 48113-0140, USA. 2017 NSF NSF/ANSI 350 2017 1 NSF/ANSI
33、Standard For Wastewater Technology Onsite residential and commercial water resuse treatment systems 1 General 1.1 Purpose The purpose of this Standard is to establish minimum material, design, and construction, and performance requirements for onsite residential and commercial water treatment system
34、s. This Standard also specifies the minimum literature that manufacturers shall supply to authorized representatives and owners as well as the minimum service-related obligations that a manufacturer shall extend to owners. 1.2 Scope This Standard contains minimum requirements for onsite residential
35、and commercial water treatment systems. Systems may include the following. Graywater treatment systems having a rated treatment capacity up to 5,678 L/day (1,500 gal/day). This applies to onsite residential and commercial treatment systems that treat graywater, those that treat laundry water from re
36、sidential laundry facilities, and those that treat bathing water. See 8.1 for performance testing and evaluation. Commercial treatment systems this applies to onsite commercial treatment systems that treat combined commercial facility wastewater and commercial facility laundry water of any capacity,
37、 and those treatment systems that treat graywater from commercial facilities with capacities exceeding 5,678 L/day (1,500 gal/day). These systems shall be performance tested and evaluated at the location of the reuse system installation, using the wastewater generated onsite from the facility servin
38、g the treatment system. See 8.3 for performance testing and evaluation. The key elements of a field evaluatin of a commercial treatment system are described in Annex A. Management methods and end uses appropriate for the treated efflent discharged from onsite residential and commercial treatment sys
39、tems meeting Class R (single family residential) or Class C (multi-family and commercial facilitiesds) requirements of this Standard include indoor restricted urban water use, such as toilet and urinal flushing, and outdoor unrestricted urban water use, such as surface irrigation. Effluent quality c
40、riteria consistent with these uses are described in 8.6, Criteria. This Standard is intended to address public health and environmental issues. Actual performance for any site or system may vary, depending on variations in raw water supply (such as alkalinity and hardness), wastewater constituents,
41、and patterns of use. The end use of the effluent is the responsibility of the owner, design professionals, and regulatory officials. System components covered under other NSF or NSF/ANSI standards or criteria shall also comply with the requirements therein. This Standard shall in no way restrict new
42、 system designs, provided such designs meet the minimum specifications described herein. 1.3 Alternate materials, design, and construction While specific materials, designs, and constructions may be stipulated in this Standard, systems that incorporate alternate materials, designs, or constructions
43、may be acceptable when it is verified that such 2017 NSF NSF/ANSI 350 2017 2 systems meet the applicable requirements of this Standard. 1.4 Performance classification For the purpose of this Standard, systems are classified according to the chemical, biological, and physical characteristics of their
44、 effluents as determined by the performance testing and evaluations described herein. Graywater treatment systems within a manufacturers model series may be classified according to the performance testing and evaluation of the system (8.1) expected to produce the poorest effluent quality within the
45、series based upon design characteristics. Residential wastewater treatment systems within a manufacturers model series may be classified according to the performance testing and evaluation of the system (8.2) with the smallest hydraulic capacity within the series. A series is limited to treatment ca
46、pacities below 1,514 L/day (400 gal/day), and treatment capacities between 1,514 L/day (400 gal/day) and 5,678 L/day (1,500 gal/day). Graywater and residential wastewater treatment systems having rated treatment capacities less than 378 L/day (100 gal/day) shall be within a manufacturers model serie
47、s having rated treated capacities at or above 378 L/day (100 gal/day). The manufacturer shall submit design drawings and specifications of the entire model series, which shall include critical design parameters for the systems. An engineering review of the design parameters may be completed in lieu
48、of performance testing and evaluation of other systems within the series provided they are determined to be appropriately proportionate to the evaluated system based on sound engineering principles. Commercial treatment systems that treat combined commercial facility wastewater and commercial facili
49、ty laundry water of any capacity, and treatment systems that treat graywater from commercial facilities with capacities exceeding 5678 L/day (1500 gal/day) performance tested and evaluated in accordance with 8.3 and Annex A, may be similarly classified within a manufacturers model series. However, consideration must be given to the conditions of the field evaluation of the system, including the wastewater characteristics, treatment system loading conditions, and other variables affecting performance. These conditions shall become limitations for classi
