NSF 360-2014 Wastewater Treatment Systems - Field Performance Verification.pdf

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1、NSF International Standard / American National StandardNSF/ANSI 360 - 2014 Wastewater Treatment Systems -Field Performance VerificationNSF International, an independent, not-for-profit, non-governmental organization, is dedicated to being the leading global provider of public health and safety-based

2、 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 Wast

3、ewater 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 360 2014 i NSF International Standard/ American National Standard for

4、 Wastewater Technology Wastewater treatment systems Field performance verification Standard Developer NSF International NSF International Board of Directors Designated as an ANSI Standard October 27, 2014 American National Standards Instituteii Prepared by The NSF Joint Committee on Wastewater Techn

5、ology Recommended for Adoption by The NSF Council of Public Health Consultants Adopted by The NSF Board of Directors November 2010 Revised October 2014 Published by NSF International PO Box 130140, Ann Arbor, Michigan 48113-0140, USA For ordering copies or for making inquiries with regard to this St

6、andard, please reference the designation “NSF/ANSI 360 2014.” Copyright 2015 NSF International Previous editions: 2010 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, w

7、ithout 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 find

8、ings 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, interpretation

9、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 organizations

10、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 examinati

11、on 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 not in

12、clude 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 part of

13、 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 requirements

14、 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. iv This page is intentionally blank. v Contents 1 General . 1 1.1 Purpose 1 1.2 Sco

15、pe 1 2 Normative references . 1 3 Definitions . 1 4 Selection of systems 3 4.1 Number of systems . 3 4.2 System Requirements 3 4.3 Scope of testing 4 4.4 Field site screening audits 4 5 Sample collection and analysis 4 5.1 Duration of sampling 4 5.2 Sample collection . 5 5.3 Sample analysis . 6 6 Te

16、st Plan . 6 7 Quality Assurance/Quality Control 9 7.1 Verification test data Data Quality Indicators (DQI). 9 8 Statistical evaluation of data . 11 9 Reporting 12 Annex A . A1 Annex B . B1 vi This page is intentionally blank.vii Foreword2The purpose of this standard is to establish consistent site s

17、election, sampling, laboratory analysis and data evaluation methods for obtaining field performance results for onsite wastewater treatment systems. This Standard provides site selection, field sampling, analytical, and statistical methods for evaluating the field performance of residential wastewat

18、er treatment systems capable of providing at least secondary treatment. A number of field studies published in past years have varied significantly in methodology, quality, and performance results. Further, many state and local regulatory jurisdictions are increasingly interested in field performanc

19、e data to compliment lab performance data. While NSF/ANSI 40 and 245 remain a valuable demonstration of initial product performance under defined conditions of test, the addition of field data can further demonstrate system performance when subjected to the variability of individual residences. This

20、 Standard was developed by the NSF Joint Committee on Wastewater Technology using the consensus process described in the American National Standards Institute. In this version of NSF/ANSI 360, the normative references were updated and editorial corrections were made throughout the standard. Suggesti

21、ons for improvements 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 standardsnsf.org, or c/o NSF International, Standards Departmen

22、t, PO 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 processed in accordance with ANSIs requirements for an ANS. As such, this Foreword may contain material that has not been subjected

23、 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. 2015 NSF NSF/ANSI 360 2014 1 2015 NSF NSF/ANSI 360 2014 NSF/ANSI Standard for Wastewater Technology Wastewater treatment systems F

24、ield performance verification 1 General 1.1 Purpose The purpose of this standard is to establish consistent site selection, sampling, laboratory analysis and data evaluation methods for obtaining field performance results for onsite wastewater treatment systems. 1.2 Scope This Standard provides site

25、 selection, field sampling, analytical, and statistical methods for evaluating the field performance of residential wastewater treatment systems capable of providing at least secondary treatment. Only treatment systems that are certified in accordance with NSF/ANSI 40 or NSF/ANSI 245 as applicable m

26、ay be evaluated under this Standard. A treatment system completing third-party testing in compliance with an evaluation, certification and listing protocol equivalent to NSF/ANSI 40 or NSF/ANSI 245 as applicable shall be acceptable, provided all data pursuant to the testing is published and the resu

27、lts verify that the device is capable of treatment as defined in NSF/ANSI 40 or NSF/ANSI 245 as applicable. 2 Normative references The following documents contain provisions that, through reference in this text, constitute provisions of this Standard. At the time of publication, the indicated editio

28、ns 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. The most recent published edition of the document shall be used for undated references. American Public Health Association

29、 (APHA), American Water Works Association (AWWA) system undergoes a routine inspection at least twice per year; system has an O system is used in a manner consistent with the manufacturers guidelines; homeowner has granted written permission to collect samples pursuant to this Standard; homeowner ce

30、rtifies that they are not being compensated by the manufacturer for being part of the evaluation; homeowner agrees in writing to operate the system in accordance with the owners manual; and homeowner agrees in writing to keep a valid maintenance contract on the system. All systems selected for inclu

31、sion in this Standard shall have operated continuously for at least 6 months. Further, selected systems shall be covered by a maintenance contract in effect since system start-up (for systems less than one year old) or one year immediately prior to initiating the field verification (for systems 2015

32、 NSF NSF/ANSI 360 2014 4 more than one year old). All maintenance contracts shall extend through the period covering the final sample collection. Systems selected for evaluation under this field verification shall be occupied by at least two people for the duration of the study. Intermittent periods

33、 of time with a lower occupancy such as may occur during a vacation or normal travel shall not be considered as disqualifying, but shall be recorded in the site log and reported in the final report. 4.3 Scope of testing For the purposes of this Standard all systems shall be certified under NSF/ANSI

34、40. If nitrogen is to be tested NSF/ANSI 245 certification shall be required. Additional parameters may be tested at the manufacturers discretion. 4.4 Field site screening audits The Verification Organization shall conduct field site audits of systems to be tested under this Standard; the Verificati

35、on Organization shall audit a minimum of 4 sites and the balance shall be audited by the Testing Organization. The manufacturer shall be notified in writing of the systems to be audited and, at their discretion, the manufacturer, may be present at the time of audit. This audit shall verify that the:

36、 system is currently under a valid maintenance contract; system has been in operation for at least six consecutive months; system has been inspected by the maintenance provider within the past six months and a written report is on file with the maintenance provider; system is being used under reside

37、ntial conditions with occupancy of two or more people; system is being used in conformance with the manufacturers recommendations; owner is willing to give permission to the Verification Organization (in writing) to access the property for the purposes of conducting this Standard; and site has no po

38、tentially hazardous or unusual conditions, such as, but not limited to, guard animals, that would make sampling difficult or hazardous to those conducting the sampling. When, in the course of verifying field performance, a system is discovered that fails to meet these criteria, or is being operated

39、outside the limits established by the manufacturer, the system may be disqualified from field performance testing by the Verification Organization. Should a system initially identified for testing be found during testing to be unqualified, the results from a reserve system may be substituted for the

40、 unqualified system. All data collected shall be reported; however, only the twenty systems identified at the end of the study as the primary systems shall be used to establish the field performance results. The results of the survey (section 4.4) shall be made in writing and kept on file by the Ver

41、ification Organization. Changes in occupancy or the manner of use, which occur over the period the field evaluation occurs, shall be noted. A summary of these data shall be included in the final report. 5 Sample collection and analysis 5.1 Duration of sampling At a minimum, samples shall be collecte

42、d one time per quarter for four consecutive quarters at each field site. 2015 NSF NSF/ANSI 360 2014 5 5.2 Sample collection The methods and procedures for collection of samples shall be described in a Test Plan, which shall be developed by the Verification Organization, or their designated represent

43、ative, in conjunction with the manufacturer. Review of the Test Plan may include participation by regulators or other appropriate entities. Approval of Test Plan, by signature of key personnel for each entity, shall be by the Verification Organization, manufacturer, and the Testing Organization, if

44、other than the Verification Organization. Further definition of the items to be included in the Test Plan is included in Section 6. The Test Plan shall be included in the Final Report. 5.2.1 Samples to be collected 5.2.1.1 Pre-evaluation samples Pre-evaluation screening samples shall be collected du

45、ring field site screening audits (described in section 4.4) to characterize the nature of the influent to the system. At a minimum, the samples shall be analyzed for BOD5and TSS. Additional analyses, such as ammonia nitrogen, TKN or fats, oils and grease (FOG), may be completed in response to needs

46、of the responsible regulatory agency, or at the request of the manufacturer. A sample of the water supply to the residence shall be collected at the same time and analyzed for alkalinity and nitrate nitrogen, if appropriate. If the water supply does not meet criteria established by the manufacturer,

47、 in the system operation manual, the site may be disqualified as a possible field site. 5.2.1.2 Field samples Field samples shall be collected during the evaluation as described in the approved Test Plan. At a minimum, influent samples shall be collected twice during the study, once prior to (or con

48、current with) the first effluent sample and one with the final effluent sample. At a minimum, all effluent samples shall be analyzed for CBOD5and TSS, and field determination of the temperature, pH and dissolved oxygen (DO) shall be made at the time of collection for a system that has been certified

49、 under NSF/ANSI 40. Additional analyses involving nitrogen species (NO2+NO3), total-nitrogen, alkalinity, and TKN shall be included if the system has been certified under NSF/ANSI 245. All samples shall be collected in accordance with the criteria set forth in this section and the Test Plan. Whether composite samples or grab samples are collected, sampling point, date, and time of sample collection shall be reported for each sample collected. Additional analyses, such as FOG, fecal coliform, E. coli, and other p