1、NSF International Standard / American National StandardNSF/ANSI 350 - 2014 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 2014 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 December 8, 2014 American National Standards Institute ii Prepared by The NSF Joint Committee on Wastewater Technology Recom
5、mended 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 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to
6、this Standard, please reference the designation “NSF/ANSI 350 2014.” Copyright 2054 NSF International Previous editions 2015, 2012 Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and m
7、icrofilm, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1NSF International (NSF), in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any oth
8、er 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, arising out of or in connectio
9、n 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 agencies or other national s
10、tandards-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 given to the use of performance
11、 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 standard requirements. Howe
12、ver, 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 referenced, the annexes are n
13、ot considered an integral part of NSF Standards. The annexes are provided as general guidelines to the manufacturer, regulatory agency, user, or certifying organization. 1The information contained in this Disclaimer is not part of this American National Standard (ANS) and has not been processed in a
14、ccordance 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 intentionally left blank. v Contents
15、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 5 Design and constru
16、ction 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 Product literatur
17、e . 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) 12 8.2 Residential wastewater treatment systems/capacities . 18 8.3 Commercial treat
18、ment systems with combined wastewater flows . 20 8.4 Sample collection . 20 8.5 Analyses 22 8.6 Criteria 22 9 Final report 25 Annex A . A1 Annex B . B1 Annex C . C1 Annex D . D1 Annex E . E1 vi This page is intentionally left blank.vii Foreword2This American National Standard, NSF/ANSI 350 Onsite re
19、sidential 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 also speci
20、fies 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 performance for any
21、 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 end uses app
22、ropriate 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 urinal flus
23、hing, 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 that treat
24、 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 by the oc
25、cupants 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 this Stan
26、dard. 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 commercial facilit
27、y 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 generated
28、 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 6 Revision of section 1.4
29、 performance classification. Issue 7 Revision of section 8 to clearly indicate the frequency for sample collection for surfactants, iron, FOG, color, odor, oily film and foam. A normative reference update is also included. 2The information contained in this Foreword is not part of this American Nati
30、onal 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 the Standard. v
31、iii 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 schedule and can b
32、e 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. 1 NSF/ANSI Standard For Wastewater Technology Onsit
33、e 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 systems. This Standard also specifies the mini
34、mum 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 and commercial water treatment systems.
35、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 residential laundry facilities, and those
36、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, and those treatment systems that treat
37、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 serving the treatment system. See 8.3 for perf
38、ormance 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 systems meeting Class R (single family resi
39、dential) 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 criteria consistent with these uses are d
40、escribed 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, and patterns of use. The end use of the
41、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 system designs, provided such designs m
42、eet 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 may be acceptable when it is verified th
43、at such 2015 NSF NSF/ANSI 350 2014 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 effluents as determined by the performa
44、nce 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 series based upon design characteristics
45、. 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 capacities below 1,514 L/day (400 gal/day)
46、, 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 series having rated treated capacities at or
47、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 of performance testing and evaluation of
48、 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 facility laundry water of any capacity, and tr
49、eatment 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 classifying other systems within a manufacturers
