1、NSF International Standard / American National StandardNSF/ANSI 41 - 2016 Non-liquid Saturated Treatment Systems NSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-based risk management solut
2、ions 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 Wastewater Technology c/o
3、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 NSF/ANSI 41 - 2016 i NSF International Standard/ American National Standard for Wastewater Technolo
4、gy Non-liquid saturated treatment systems Standard Developer NSF International NSF International Designated as an ANSI Standard March 20, 2016 American National Standards Institute ii Prepared by The NSF Joint Committee on Wastewater Technology Recommended for Adoption by The NSF Council of Public H
5、ealth Consultants Adopted by The NSF Board of Directors November 1978 Revised December 1980 Revised May 1983 Revised May 1998 Revised November 1999 Revised March 2005 Addendum May 2007 Revised February 2011 Revised August 2016 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0
6、140, USA For ordering copies or for making inquiries with regard to this Standard, please reference the designation “NSF/ANSI 41-2016.” Copyright 2016 NSF International Previous Editions 2011, 2007, 2005, 1998, 1983, 1980, 1978 NSF Unless otherwise specified, no part of this publication may be repro
7、duced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from NSF International. Printed in the United States of America. iii Disclaimers1 NSF, in performing its functions in accordance with its objectives, does not
8、assume or undertake to discharge any responsibility of 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 liab
9、ility for damages, including consequential damages, arising 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 no
10、t been included in this Standard because governmental agencies or other national standards-setting organizations provide safety requirements. Participation in NSF Standards development activities by regulatory agency representatives (federal, local, state) shall not constitute their agencys endorsem
11、ent of NSF or any of its Standards. Preference is given 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, a
12、re intended to assist in understanding their adjacent 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 i
13、ncomplete design and construction. Unless otherwise referenced, 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
14、 not part of this American National Standard (ANS) and 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 f
15、or conformance to the Standard. iv This page is intentionally blank. v Contents 1 General . 1 1.1 Purpose 1 1.2 Scope . 1 1.3 Systems classification 1 2 Normative references . 1 3 Definitions . 2 4 Materials . 2 4.1 Interior surfaces . 3 4.2 Exposed surfaces . 3 4.3 Maintenance tools 3 4.4 Dissimila
16、r metals 3 4.5 Impact resistance . 3 4.6 Burn resistance 3 4.7 Additives . 4 5 Design and construction . 4 5.1 Exposed surfaces . 4 5.2 Structural integrity 4 5.3 Noise 5 5.4 Component accessibility 5 5.5 Agitators . 5 5.6 Electrical components 5 5.7 Access ports . 5 5.8 Failure sensing and signalin
17、g equipment. 5 5.9 Flow design 6 5.10 Data plate and service label 6 5.11 Pest control 6 6 Product literature 7 6.1 Owners manual . 7 6.2 Additional product literature . 7 7 Other documentation 9 8 Replacement parts 9 8.1 Parts availability . 9 8.2 Stand-by parts 9 9 General performance testing and
18、evaluation requirements . 9 10 Mature systems (“field”) performance testing and evaluation 10 10.1 System selection criteria 10 10.2 Sample collection and analysis . 10 10.3 Performance criteria 10 11 New system (“controlled”) performance testing and evaluation . 11 11.1 Loading patterns 11 11.2 Sch
19、edule for performance testing and evaluation . 14 11.3 Sample collection and analysis . 15 11.4 Performance criteria 15 vi 12 Sample collection 15 13 Analyses of end products . 15 14 Performance criteria . 15 14.1 Liquid containment 15 14.2 Odors . 15 14.3 Solid end products . 16 14.4 Liquid end pro
20、ducts . 16 Annex A . A1 Annex B . B1 Annex C .C1 2016 NSF NSF/ANSI 41 - 2016 vii Foreword2 NSF/ANSI 41 is intended for devices that do not utilize a liquid saturated medium as a primary means of storing or treating human excreta or human excreta mixed with other organic household materials. Its purp
21、ose is to establish minimum materials, design and construction, and performance testing and evaluation requirements for these devices. Minimum literature requirements to be supplied by manufacturers to authorized representatives and owners are also specified. In this edition of NSF/ANSI 41, the foll
22、owing was revised: Issue 7: Normative References were reviewed and updated through the ballot of this issue. ANSI/NSF 41 was developed by the NSF Joint Committee on Wastewater Technology using the consensus process described by the American National Standards Institute (ANSI). ANSI prohibits the inc
23、lusion of commercial terms and conditions, such as manufacturers warranties and guarantees, in product standards. However, the NSF Joint Committee on Wastewater Technology has historically believed strongly that all certifiers of NSF/ANSI 41 systems should have certification program policies that co
24、ntain several key elements, including requirements for warranties. It is the Joint Committees belief that these key elements provide valuable assurance of long-term performance as well as protection of public health and the environment. To emphasize the Joint Committees convictions on this issue, tw
25、o annexes, which are not part of this Standard, are included for informational purposes and guidance. These annexes are intended to establish a uniform program by which products meeting the scope of this Standard should be certified. Annex A provides the key elements of a certification program, and
26、annex B is a sample warranty. At NSF, both annexes have been adopted as NSF/ANSI 41 certification program policies. 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
27、 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. 2 The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processe
28、d 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. viii This page is intentionally blank. 1 2016
29、NSF NSF/ANSI 41 2016 NSF/ANSI Standard for Wastewater Technology Non-liquid saturated treatment systems 1 General 1.1 Purpose The purpose of this Standard is to establish minimum materials, design and construction, and performance requirements for non-liquid saturated treatment systems. It is intend
30、ed to protect public health and the environment as well as minimize nuisance factors. This Standard also specifies the minimum literature that manufacturers shall supply to authorized representatives and owners. 1.2 Scope This Standard contains minimum requirements for treatment systems that do not
31、utilize a liquid saturated media as a primary means of storing or treating human excreta or human excreta mixed with other organic household materials. It addresses treatment systems that treat both solid and liquid waste, as well as those that only treat solid waste. Management methods for the end
32、products of these systems are not addressed by this Standard. System components covered under other NSF or NSF/ANSI standards or criteria shall also comply with the requirements contained in those other standards. This Standard shall in no way restrict new system designs, provided such designs meet
33、the minimum specifications described herein. 1.3 Systems classification For the purpose of this Standard, systems are classified according to the use environment for which they are intended to be installed. The systems classifications identified in this Standard are residential systems, day-use park
34、 systems, and cottage systems. Performance testing and evaluation requirements for each of these systems classifications are described herein. 2 Normative references The following documents contain provisions that, through reference in this text, constitute provisions of this Standard. At the time o
35、f 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 standards indicated below. American Public Health Association (APHA), American Water Works Association (AWWA) NOTE
36、 Periodic cleaning or replacement of components refers to those procedures which are specified by the manufacturer as necessary within two years of system installation. b) visual inspection and sampling as required by the manufacturer in the operation and maintenance manual; and c) removal (manually
37、 or by pumping) of collected residuals and end products as required by the manufacturer in the operation and maintenance manual. 5.8 Failure sensing and signaling equipment 5.8.1 Systems rated for day-use and residential systems rated to continuously serve 10 or more people shall possess a mechanism
38、 or process capable of detecting failures of electrical and mechanical components critical to the treatment processes and delivering a discernable visible and audible signal to notify the owner of the failure. These same systems shall also possess a mechanism or process capable of detecting a high w
39、ater condition and delivering a visible and audible signal to notify the owner that the water level is above normal operating specifications. 5.8.2 The visual and auditory signals shall continue to be functional in the event of an electrical, mechanical, or hydraulic malfunction of the system. 2016
40、NSF NSF/ANSI 41 - 2016 6 5.9 Flow design Systems shall have a designated flow-path that is reflective of the entire treatment process. During periods of normal system operation, as well as periods of system and component malfunction, the design and construction of the system shall preclude alternati
41、ve flow-paths and prevent the discharge of liquids and solids from an opening external to the designated flow-path. 5.10 Data plate and service label 5.10.1 A permanent and legible data plate shall be placed on all systems at a location accessed during maintenance cycles and inspections. A second da
42、ta plate shall be affixed to the front of the electrical control box, if applicable. The data plates shall include: a) manufacturers name, address, and telephone number; b) model number; c) serial number (required on one data plate only); d) rated capacity of the system; e) the system classification
43、(s) as determined with the performance testing and evaluation requirements described herein; and f) a statement that refers to the product literature for all maintenance and service requirements. An additional data plate, or label, or sticker shall be prominently displayed for the user of the system
44、. It shall include: a) a detailed description of the type, volume, and frequency that bulking agents and other additives are to be added to the system; b) a detailed description of the types of food (in terms of vegetable matter, oil and grease, and meat/animal material) the system is capable of han
45、dling (provided the system is designed to handle food wastes); and c) a brief description of common items that should and should not be added to the system. 5.10.2 A clearly visible label or plate that provides instructions for obtaining service shall be permanently located near the failure signal,
46、if applicable (see 5.8.1). The label or plate shall contain at a minimum the manufacturers name, address, and telephone number. 5.11 Pest control Devices shall be fabricated to prevent entry of insects into any component in which biological activity is intended to occur, when installed and operated
47、according to the manufacturers instructions. Entry points where wastes are intended to be deposited under normal usage shall be exempt from this requirement. 2016 NSF NSF/ANSI 41 - 2016 7 6 Product literature 6.1 Owners manual Each system shall be accompanied by a manufacturer-prepared owners manual
48、. The manufacturer or authorized representative shall provide the manual to the owner at the time of system installation. The manual shall be written so as to be easily understood by the intended reader and shall include, at a minimum: a) the systems model designation; b) a statement designating the
49、 classifications of the system as well as a statement confirming that the system meets the requirements of NSF/ANSI 41 corresponding to the designated classification(s); c) a functional description of system operation, including diagrams illustrating basic system design; d) a clear statement of examples of the types of materials that can be effectively placed in the system; e) a list of household substances that, if placed in the system, may adversely affect the system, the process, or the environment; f) comprehensive, site-specific operating instructions
