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About This Item
Full Description
Preface
This is the second edition of CSA B128.3, Performance of non-potable water reuse systems . It supersedes the previous edition published in 2012. Major changes to this edition include a) specification of only one level of reclaimed water quality (Class B reclaimed water quality removed); b) removal of laundry tubs from laundry-greywater and wastewater definitions; c) revisions to the following tests: i) watertightness (see Clause 4.6); ii) alarms (see Clause 4.12); iii) diversion and blockage (See Clause 4.13); iv) overflow (see Clause 4.14); v) working day parent stress (see Clause 5.8.3); and vi) vacation stress (see Clause 5.8.5); d) replacement of the cold water stress test and the hot water stress test with the temperature stress test (see Clause 5.8.7); e) revisions to water quality parameters; f) revisions to bathroom-greywater, laundry-greywater, and combined-greywater influent characteristics; g) revisions to the Monday to Sunday test and sampling schedules, which have also been moved to Annex E; h) revisions to the grab sample collection schedule; i) addition of wash day surge stress test (see Clause 5.8.2) and water efficiency stress test (see Clause 5.8.9); j) removal of peak flow discharge stress and underload stress tests; k) revisions to stress event operation repeat test rule (see Clause 5.9.3); l) clarification of resumption of testing for test continuation or restart (See Clause 5.11.3); and m) revisions to data plate and documentation requirements. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was prepared by the Technical Committee on Non-Potable Water Systems, under the jurisdiction of the Strategic Steering Committee on Construction and Civil Infrastructure, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
Scope
1.1 General
This Standard assesses the performance of package wastewater treatment plants that are intended to treat either mixed-wastewater or greywater drainage and produce a treated effluent water quality suitable for non-potable water reuse applications with a treatment capacity of up to 10 000 L/d (2650 gal/d) or less. This Standard also covers site-assembled components included in package wastewater treatment plants. Notes: 1) In this Standard, package wastewater treatment plants intended to produce a reuse water quality suitable for authorized non-potable water applications from either mixed-wastewater or greywater drainage are also referred to as package plants. 2) This Standard is not intended to limit the use of multiple package plants to achieve an aggregate treatment capacity greater than 10 000 L/d (2650 gal/d) or as determined by the authority having jurisdiction. 3) This Standard does not cover custom-engineered wastewater treatment systems. For such systems, the authority having jurisdiction should be consulted. 4) Greywater diverters are covered in ASME A112.18.2/CSA B125.2. 5) See Annex F for information on design, warranty, and service policy.
1.2 Test methods
This Standard specifies test methods for evaluating the performance of package plants and minimum requirements regarding a) materials; b) design and construction; c) operation and treatment performance; d) markings; and e) instructions and other documentation.
1.3 Terminology
In CSA standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements.