1、NSF International Standard / American National StandardNSF/ANSI 41 - 2011 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 inter-pretations, 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 - 2011 i NSF International Standard/ American National Standard for Wastewater Technol
4、ogy Non-liquid saturated treatment systems Standard Developer NSF International NSF International Designated as an ANSI Standard February 18, 2011 American National Standards Institute ii Prepared by The NSF Joint Committee on Wastewater Technology Recommended for Adoption by The NSF Council of Publ
5、ic Health 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 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0140, USA For ord
6、ering copies or for making inquiries with regard to this Standard, please reference the designation “NSF/ANSI 41-2011.” Copyright 2011 NSF International Previous Editions 2007, 2005, 1998, 1983, 1980, 1978 NSF Unless otherwise specified, no part of this publication may be reproduced or utilized in a
7、ny form or by any means, elec-tronic or mechanical, including photocopying and microfilm, 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
8、 discharge any responsibility of the manufacturer or any other party. The opinions and findings of NSF represent its pro-fessional 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, in
9、cluding 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 not been included in th
10、is 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 endorsement of NSF or any of
11、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 con-struction criteria. The illustrations, if provided, are intended to assis
12、t 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 incomplete design and
13、 construction. Unless otherwise referenced, the annexes are not considered an integral part of NSF Standards. The annex-es 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 Am
14、erican 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 for con-formance to t
15、he Standard. iv This page is intentionally blank. v Contents Foreword vii 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 2 4.2 Exposed surfaces 3 4.3 Maintenance tools . 3 4.4 Dissimilar metals
16、 . 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 signaling equip
17、ment . 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 eval
18、uation 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 . 10 Figure 1 Food loading . 11 11.1 Loa
19、ding patterns . 11 Figure 2 Preliminary routine operation 12 vi Figure 3 Party stress . 12 11.2 Schedule for performance testing and evaluation 14 11.3 Sample collection and analysis . 14 11.4 Performance criteria 14 12 Sample collection . 14 13 Analyses of end products . 15 14 Performance criteria
20、. 15 14.1 Liquid containment 15 14.2 Odors 15 14.3 Solid end products 15 14.4 Liquid end products . 15 A Key elements of a certification program for non-liquid saturated treatment systems A1 A.1 Marking the product A1 A.2 Listing certified companies A1 A.3 Annual audits A1 A.4 Testing A1 A.5 Correct
21、ive action . A1 A.6 Enforcement A2 A.7 Administrative review A2 A.8 Appeals . A2 A.9 Complaints A2 A.10 Advertising A2 A.11 Records . A2 A.12 Public notice A2 A.13 Confidentiality A3 A.14 Warranty A3 B Limited warranty . B1 C Graphical representations of loading patterns indicated in 11.1 C1 Figure
22、C.1 Illustration of loading patterns for residential systems C1 Figure C.2 Illustration of loading patterns for day-use park systems C2 Figure C.3 Illustration of loading patterns for cottage systems . C3 2011 NSF NSF/ANSI 41 - 2011 vii Foreword2NSF/ANSI 41 is intended for devices that do not utiliz
23、e a liquid saturated medium as a primary means of stor-ing or treating human excreta or human excreta mixed with other organic household materials. Its purpose is to establish minimum materials, design and construction, and performance testing and evaluation require-ments for these devices. Minimum
24、literature requirements to be supplied by manufacturers to authorized rep-resentatives and owners are also specified. In this edition of NSF/ANSI 41, the following was revised: Issue 5: Normative References were reviewed and updated through the ballot of this issue. ANSI/NSF 41 was developed by the
25、NSF Joint Committee on Wastewater Technology using the consensus process described by the American National Standards Institute (ANSI). ANSI prohibits the inclusion of commercial terms and conditions, such as manufacturers warranties and guarantees, in product standards. However, the NSF Joint Commi
26、ttee on Wastewater Technology has histori-cally believed strongly that all certifiers of NSF/ANSI 41 systems should have certification program policies that contain several key elements, including requirements for warranties. It is the Joint Committees belief that these key elements provide valuable
27、 assurance of long-term performance as well as protection of public health and the environment. To emphasize the Joint Committees convictions on this issue, two annexes, which are not part of this Standard, are included for informational purposes and guidance. These annexes are intended to establish
28、 a uniform program by which products meeting the scope of this Standard should be cer-tified. Annex A provides the key elements of a certification program, and annex B is a sample warranty. At NSF, both annexes have been adopted as NSF/ANSI 41 certification program policies. Suggestions for improvem
29、ent of this Standard are welcome. Comments should be sent to Chair, Joint Com-mittee on Wastewater Technology, c/o NSF International, Standards Department, PO Box 130140, Ann Ar-bor, Michigan 48113-0140, USA. 2The information contained in this Foreword is not part of this American National Standard
30、(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 con-formance to the Standard. viii This page
31、 is intentionally blank. 9 2011 NSF NSF/ANSI 41 2011 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
32、 treatment systems. It is intended 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 fo
33、r treatment systems that do not 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.
34、 Management methods for the end 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 desi
35、gns, provided such designs meet 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 r
36、esidential systems, day-use park 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
37、 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 standards indicated below. American Public Health Association (APHA), American Wat
38、er Works Association (AWWA) NOTE 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
39、manual; and c) removal (manually 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
40、people shall possess a mechanism 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 proce
41、ss capable of detecting a high water 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
42、malfunction of the system. 2011 NSF NSF/ANSI 41 - 2011 14 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 th
43、e system shall preclude alternative 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 cy
44、cles and inspections. A second data 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 sys
45、tem; e) the system classification(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 dis
46、played for the user of the system. 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 mater
47、ial) the system is capable of handling (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
48、located near the failure signal, 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 oc
49、cur, when installed and operated according to the manufacturers instructions. Entry points where wastes are intended to be deposited under normal usage shall be exempt from this requirement. 2011 NSF NSF/ANSI 41 - 2011 15 6 Product literature 6.1 Owners manual Each system shall be accompanied by a manufacturer-prepared owners manual. 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 includ
