1、NSF International Standard / American National StandardNSF/ANSI 350-1 - 2017Onsite Residential and CommercialGreywater Treatment Systems forSubsurface DischargeNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of publi
2、c health and safety-based 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
3、, Joint Committee on Wastewater 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.orgi NSF/ANSI 350-1 2017 NSF International Standard/ Ame
4、rican National Standard for Wastewater Technology Onsite residential and commercial greywater treatment systems for subsurface discharge Standard Developer NSF International Designated as an ANSI Standard December 24, 2017 American National Standards Instituteii Prepared by The NSF Joint Committee o
5、n Wastewater Technology Recommended for Adoption by The NSF Council of Public Health Consultants Adopted June 2011 Revised December 2012 Revised December 2017 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 350-1 2012.” Copyright 2018 NSF International Previous 2013, 2011 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 microfil
7、m, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1NSF, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The opinions and
8、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 connection with the use, interpretat
9、ion 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 standards-setting organizati
10、ons provide safety requirement. Participation in NSF 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 criteria measurable by exami
11、nation 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. However, the illustrations may no
12、t 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 not considered an integral par
13、t 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 accordance with ANSIs requirem
14、ents 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 1 General . 1 1.1 Scope . 1 1
15、.2 Alternate materials, design, and construction 1 1.3 Performance classification . 2 2 References . 2 2.1 Normative references . 2 2.2 Abbreviations 3 3 Definitions . 3 4 Materials . 4 4.1 Interior surfaces . 4 4.2 Exterior surfaces 4 4.3 Welding 4 4.4 Dissimilar metals 5 5 Design and construction
16、. 5 5.1 Exposed surfaces . 5 5.2 Structural integrity 5 5.3 Water tightness 5 5.4 Noise 5 5.5 Mechanical components 5 5.6 Electrical components 5 5.7 Access ports . 6 5.8 Failure sensing and signaling equipment . 6 5.9 Flow design 7 5.10 Dataplate and service label . 7 6 Product literature 8 6.1 Own
17、ers manual . 8 6.2 Additional product literature 9 7 Other documentation 10 8 Performance testing and evaluation . 10 8.1 Greywater reuse treatment systems with capacities of less than 5,678 L/d (1,500 gal/d) . 10 8.2 Commercial greywater reuse treatment systems with combined commercial facility gre
18、ywater capacity exceeding 5,678 L/d (1,500 gal/d) and commercial facility laundry water only of any capacity 18 8.3 Sample collection . 18 8.4 Analyses (applicable to all reuse systems evaluated in accordance with 8.1 and 8.2) 19 8.5 Criteria (applicable to all reuse systems evaluated in accordance
19、with 8.1 and 8.2) . 20 9 Final report 21 Annex A Key elements for a field evaluation of a commercial (C) onsite greywater reuse treatment system . 23 Annex B Key elements of a maintenance / management plan for onsite greywater reuse treatment systems . 31 Annex C Example products for preparing greyw
20、ater test water 33 Annex D Basis for greywater test water 36 Annex E NSF International individual ingredient use study . 40 This page is intentionally left blank.vii Foreword2This American National Standard, NSF/ANSI 350-1 Onsite residential and commercial greywater treatment systems for subsurface
21、discharge Standard, has been developed as part of the ongoing efforts of interested parties to establish minimum requirements for onsite residential and commercial greywater treatment systems. The standard is intended to address public health and environmental issues only. Actual performance for any
22、 site or system may vary, depending on variations in raw water supply (such as in alkalinity and hardness), greywater 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
23、ropriate for the treated effluent discharged from greywater residential and commercial treatment systems meeting this Standard are limited to subsurface discharge to the environment only. Systems include: Greywater reuse treatment systems having a rated treatment capacity up to 5,678 L/d (1,500 gal/
24、d): This applies to onsite residential and commercial reuse treatment systems that treat combined greywater, those that treat laundry water only from residential laundry facilities, and those that treat bathing water only. Commercial greywater reuse treatment systems: This applies to onsite commerci
25、al reuse treatment systems that treat combined commercial facility greywater with capacities exceeding 5,678 L/d (1,500 gal/d) and commercial facility laundry water only of any capacity. These systems shall be performance tested and evaluated at the location of the reuse system installation, using t
26、he greywater generated onsite from the facility serving the treatment system. This edition of the Standard contains the following revisions: Issue 7 Normative references were updated. This Standard was developed by the NSF Joint Committee on Wastewater Technology using the consensus process describe
27、d 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 be opened for comment at any time. Comments should be sent to Chair, Joint Committee on Wastewater Technology at standard
28、snsf.org, or c/o NSF International, Standards Department, P.O. Box 130140, Ann Arbor, Michigan 48113-0140, USA. 2The information contained in this Foreword is not part of this American National Standard (ANS) and has not been pro-cessed in accordance with ANSIs requirements for an ANS. As such, this
29、 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 con-formance to the Standard. This page is intentionally left blank. 2018 NSF NSF/ANSI 350-1 2017 NSF/ANSI Standard for Wastewater Treatment
30、 Systems Onsite residential and commercial greywater treatment systems for subsurface discharge 1 General 1.1 Scope This Standard contains minimum requirements for onsite residential and commercial greywater treatment systems. Systems may include: Greywater reuse treatment systems having a rated tre
31、atment capacity up to 5,678 L/d (1,500 gal/d): This applies to onsite residential and commercial reuse treatment systems that treat combined greywater, those that treat laundry water only from residential laundry facilities, and those that treat bathing water only. See 8.1 for performance testing an
32、d evaluation. Commercial greywater reuse treatment systems: This applies to onsite commercial reuse treatment systems that treat combined commercial facility greywater with capacities exceeding 5,678 L/d (1,500 gal/d) and commercial facility laundry water only of any capacity. These systems shall be
33、 performance tested and evaluated at the location of the reuse system installation, using the greywater generated onsite from the facility serving the treatment system. See 8.2 for performance testing and evaluation. The key elements of a field evaluation of a commercial onsite reuse treatment syste
34、m are described in Annex A. The Standard is intended to address public health and environmental issues only. Actual performance for any site or system may vary, depending on variations in raw water supply (such as in alkalinity and hardness), greywater constituents, and patterns of use. The end use
35、of the effluent is the responsibility of the owner, design professionals, and regulatory officials. Management methods and end uses appropriate for the treated effluent discharged from greywater residential and commercial treatment systems meeting this Standard are limited to subsurface discharge to
36、 the environment only. Effluent quality criteria consistent with these uses are described in 8.5 Criteria. 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
37、such designs meet the minimum specifications described herein. 1.2 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
38、is verified that such systems meet the applicable requirements of this Standard. 2018 NSF NSF/ANSI 350-1 2017 2 1.3 Performance classification For the purpose of this Standard, systems are classified according to the chemical, biological, and physical characteristics of their effluents as determined
39、 by the performance testing and evaluations described herein. Greywater reuse treatment systems within a manufacturers model series may be classified according to the performance testing and evaluation of the system expected to produce the poorest effluent quality within the series based upon design
40、 characteristics. A series is limited to treatment capacities below 1,514 L/d (400 gal/d), and treatment capacities between 1,514 L/d (400 gal/d) and 5,678 L/d (1,500 gal/d). Greywater reuse treatment systems having rated treatment capacities less than 378 L/d (100 gal/d) shall be within a manufactu
41、rers model series having rated treated capacities at or above 378 L/d (100 gal/d). 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 comple
42、ted in lieu 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 greywater reuse treatment systems with capacities exceeding 5,678 L/d (1,500 g
43、al/d), and those that treat commercial facility laundry water up to 5,678 L/d (1,500 gal/d), as performance tested and evaluated in accordance with 8.2 and Annex A, may be similarly classified; however, consideration must be given to the conditions of the field evaluation of the system, including th
44、e greywater characteristics, treatment system loading conditions, and other variables affecting performance. These conditions shall become limitations for other models determined to be appropriately proportionate to the evaluated system. 2 References 2.1 Normative references The following documents
45、contain provisions that, through reference in this text, constitute provisions of this Standard. At the time of publication, the indicated editions were valid. All standards are subject to revision, and parties are encouraged to investigate the possibility of applying the recent editions of the stan
46、dards indicated below. The most recent published edition of the document shall be used for undated references. ANSI/AWS D1.1/D1.1M:2015, Structural Welding Code -Steel3ANSI/AWS D1.3/D1.3M:2008, Structural Welding Code Sheet Steel, 5th Edition, with Errata3American Public Health Association (APHA), A
47、merican Water Works Association (AWWA) periodic cleaning or replacement of components and removal of residuals as required by the manufacturer in the operation and maintenance manual; NOTE Periodic refers to all procedures specified in the manufacturers operation and maintenance manual that must be
48、performed within intervals of two years. visual inspection and sampling as required by the manufacturer in the operation and maintenance manual, including a means for collecting a representative effluent sample and determining the need for residuals removal; removal (manually or by pumping) of colle
49、cted residuals as required by the manufacturer in the operation and maintenance manual; and removal of stored treated or untreated reuse water. 5.7.2 Access ports shall be protected against unauthorized intrusions by methods compatible with the size of the access port. Acceptable protective measures for access ports that allow personal entry include, but are not limited to: a padlock; a cover that can be removed only with specialized tools; or a cover having a minimum net weight of 29.5 kg (65 lb). 5.7.3 The signals shall continue to be f
