1、NSF International Standard / American National StandardNSF/ANSI 350-1 - 2012Onsite Residential and CommercialGraywater 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 inter-pretations, or propose revisions by contacting: Chai
3、r, 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.orgNSF/ANSI 350-1 2012 i NSF International Standard/ Am
4、erican National Standard for Wastewater Technology Onsite residential and commercial graywater treatment systems for subsurface discharge Standard Developer NSF International Designated as an ANSI Standard December 23, 2012 American National Standards Instituteii Prepared by The NSF Joint Committee
5、on Wastewater Technology Recommended for Adoption by The NSF Council of Public Health Consultants Adopted June 2011 Revised December 2012 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to this Standard, please
6、 reference the designation “NSF/ANSI 350-1 2012.” Copyright 2013 NSF International Previous 2011 Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elec-tronic or mechanical, including photocopying and microfilm, without permission in w
7、riting 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 findings of NSF represent
8、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, interpretation of, or reliance upon t
9、his 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 organizations provide safety require
10、ment. 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 examination or testing in NSF S
11、tandards 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 not include all requirements
12、 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 part of NSF Standards. The an
13、nexes 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 pro-cessed in accordance with ANSIs requirements for an ANS. As such,
14、 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 con-formance to the Standard. iv This page is intentionally left blank. v Contents 1 General . 1 1.1 Scope . 1 1.2 Alternate material
15、s, design, and construction 1 1.3 Performance classification . 2 2 References . 2 2.1 Normative references . 2 2.2 Abbreviations 2 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 . 5 5.1 Exposed surface
16、s . 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 Owners manual . 8 6.2 Ad
17、ditional product literature 9 7 Other documentation 10 8 Performance testing and evaluation . 10 8.1 Graywater reuse treatment systems with capacities of less than 5,678 L/d (1,500 gal/d) . 10 8.2 Commercial graywater reuse treatment systems with combined commercial facility graywater capacity excee
18、ding 5,678 L/d (1,500 gal/d) and commercial facility laundry water only of any capacity . 17 8.3 Sample collection . 17 8.4 Analyses (applicable to all reuse systems evaluated in accordance with 8.1 and 8.2) 18 8.5 Criteria (applicable to all reuse systems evaluated in accordance with 8.1 and 8.2) .
19、 19 9 Final report 20 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 350-1 Onsite residential and commercial graywater treatment systems for subsurface discharge Standard, has been devel
20、oped as part of the ongoing efforts of interested parties to establish minimum requirements for onsite residential and commercial graywater treatment systems. The standard is intended to address public health and environmental issues only. Actual performance for any site or system may vary, dependin
21、g 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 appropriate for the treated effluent
22、discharged from graywater residential and commercial treatment systems meeting this Standard are limited to subsurface discharge to the environment only. Systems include: Graywater reuse treatment systems having a rated treatment capacity up to 5,678 L/d (1,500 gal/d): This applies to onsite residen
23、tial and commercial reuse treatment systems that treat combined graywater, those that treat laundry water only from residential laundry facilities, and those that treat bathing water only. Commercial graywater reuse treatment systems: This applies to onsite commercial reuse treatment systems that tr
24、eat combined commercial facility graywater 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 the graywater generated onsite from
25、 the facility serving the treatment system. This Standard was developed by the NSF Joint Committee on Wastewater Technology using the consensus process described in the American National Standards Institute. Issue 3: This issue provided consistent language to be used throughout the wastewater standa
26、rds for Failure sensing and signaling equipment in the section 5.8 of this Standard. Issue 4: This issue addressed any adjustments in alkalinity for the influent need to be included in the final report (section 9). Issue 5: The purpose of this ballot was to correct an issue in the failure sensing eq
27、uipment section. When the original failure sensing ballot was sent out, it did not address all language changes needed in this standard to harmo-nize with the proposed (approved) language. This ballot corrected those issues. Suggestions for improvement of this Standard are welcome. This Standard is
28、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 standardsnsf.org, or c/o NSF International, Standards Department, PO Box 130140, Ann Arbor, Michigan 48113-0140, USA. 2The informat
29、ion 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 Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not
30、contain requirements necessary for con-formance to the Standard. viii This page is intentionally left blank. 1 2013 NSF NSF/ANSI 350-1 2012 NSF/ANSI Standard for Wastewater Treatment Systems Onsite residential and commercial graywater treatment systems for subsurface discharge 1 General 1.1 Scope Th
31、is Standard contains minimum requirements for onsite residential and commercial graywater treatment systems. Systems may include: Graywater reuse treatment systems having a rated treatment capacity up to 5,678 L/d (1,500 gal/d): This applies to onsite residential and commercial reuse treatment syste
32、ms that treat combined graywater, those that treat laundry water only from residential laundry facilities, and those that treat bathing water only. See 8.1 for performance testing and evaluation. Commercial graywater reuse treatment systems: This applies to onsite commercial reuse treatment systems
33、that treat combined commercial facility graywater 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 the graywater generated onsi
34、te 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 system are described in Annex A. The standard is intended to address public health and environmental issues only. Actual pe
35、rformance 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
36、 and end uses appropriate for the treated effluent discharged from graywater residential and commercial treatment systems meeting this Standard are limited to subsurface discharge to the environment only. Effluent quality criteria consistent with these uses are described in 8.5 Criteria. System comp
37、onents 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 meet the minimum specifications described herein. 1.2 Alternate materials, design, and construction While
38、 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 that such systems meet the applicable requirements of this Standard. 2013 NSF NSF/ANSI 350-1 2012 2 1.3 Pe
39、rformance 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 performance testing and evaluations described herein. Graywater reuse treatment systems within a manufacturers
40、 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 characteristics. A series is limited to treatment capacities below 1,514 L/d (400 gal/d), and treatment capacities be
41、tween 1,514 L/d (400 gal/d) and 5,678 L/d (1,500 gal/d). Graywater reuse treatment systems having rated treatment capacities less than 378 L/d (100 gal/d) shall be within a manufacturers model series having rated treated capacities at or above 378 L/d (100 gal/d). The manufacturer shall submit desig
42、n 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 other systems within the series provided they are determined to b
43、e appropriately proportionate to the evaluated system based on sound engineering principles. Commercial graywater reuse treatment systems with capacities exceeding 5,678 L/d (1,500 gal/d), and those that treat commercial facility laundry water up to 5,678 L/d (1,500 gal/d), as performance tested and
44、 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 the graywater characteristics, treatment system loading conditions, and other variables affecting performance. These con
45、ditions shall become limitations for other models determined to be appropriately proportionate to the evaluated system. 2 References 2.1 Normative references The following documents contain provisions that, through reference in this text, constitute provisions of this Standard. At the time of public
46、ation, 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 standards indicated below. ANSI/AWS D1.1/D1.1M:2010, Structural Welding Code -Steel3ANSI/AWS D1.3/D1.3M:2008, Structural W
47、elding Code Sheet Steel, 5th Edition, with Errata3American Public Health Association (APHA), American Water Works Association (AWWA) 2) periodic cleaning or replacement of components and removal of residuals as required by the manufacturer in the operation and maintenance manual; NOTE Periodic refer
48、s to all procedures specified in the manufacturers operation and maintenance manual that must be performed within intervals of two years. 3) visual inspection and sampling as required by the manufacturer in the operation and maintenance manual, including a means for collecting a representative efflu
49、ent sample and determining the need for residuals removal; 4) removal (manually or by pumping) of collected residuals as required by the manufacturer in the operation and maintenance manual; and 5) 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
