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1、BRITISH STANDARD BS EN 12255-11:2001 Wastewater treatment plants Part 11: General data required The European Standard EN 12255-11:2001 has the status of a British Standard ICS 13.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12255-11:2001 This British Standard,
2、having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 37453 X National foreword This British Standard is the official English langua
3、ge version of EN 12255-11:2001. The UK participation in its preparation was entrusted to Technical Committee B/505, Wastewater engineering, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British
4、 Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British S
5、tandard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the
6、 responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the
7、EN title page, pages 2 to 11 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12255-11 March 2001 ICS 13.060.30 English versi
8、on Wastewater treatment plants - Part 11: General data required Stations dpuration - Partie 11: Informations gnrales exiges Klranlagen - Teil 11: Erforderliche allgemeine Angaben This European Standard was approved by CEN on 4 February 2001. CEN members are bound to comply with the CEN/CENELEC Inter
9、nal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member.
10、This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are t
11、he national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPI
12、SCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12255-11:2001 E Page 2 EN 12255-11:2001 Contents Page Foreword. . . . . . . . . . . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2Normative references. . . . . . . . . . . . . . . . .
14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3Terms and definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4Client options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . . . . . . . 4 5Basic design data required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.1Loading data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.
16、2Effluent quality, requirements for the disposal of residues and sludge . . . . . . . . . . . . . . . . . . . 6 5.3Site description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.4Additional data required . . . . . . . . . . .
17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.5Time schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.6Start-up and guarantee testing . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . 8 5.7Operational cost information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6Documents to be provided by a turn-key contractor or the consulting engineer. . . . . . . . 9 6.1Complete documents
19、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.2Design options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.3Proposed solution . . . . . . . . . . . . . . . . .
20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.4Calculation and presentation of costs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Bibliography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Page 3 EN 12255-11:2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 165 “Waste water engineering“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national st
22、andard, either by publication of an identical text or by endorsement, at the latest by September 2001, and conflicting national standards shall be withdrawn at the latest by December 2001. It is the eleventh part prepared by the working groups CEN/TC 165/WG 42 und WG 43 relating to general requireme
23、nts and processes for wastewater treatment plants for more than 50 PT. The parts of the series are as follows: Part 1:General construction principles Part 3:Preliminary treatment Part 4:Primary settlement Part 5:Lagooning processes Part 6:Activated sludge processes Part 7:Biological fixed-film react
24、ors Part 8:Sludge treatment and storage Part 9:Odour control and ventilation Part 10: Safety principles Part 11: General data required Part 12: Control and automation1) Part 13: Chemical treatment Part 14: Disinfection1) Part 15: Measurement of the oxygen transfer in clean water in activated sludge
25、aeration tanks Part 16: Physical (mechanial) filtration1) NOTE For requirements on pumping installations at wastewater treatment plants, provided initially as part 2 “Pumping installations for wastewater treatment plants“, see EN 752-6 “Drain and sewer systems outside buildings Part 6: Pumping insta
26、llations“. The parts EN 12255-1, EN 12255-3 to EN 12255-8, EN 12255-10 and EN 12255-11 were implemented together as a European package (Resolution BT 152/1998). The date of withdrawal (dow) of all conflicting national standards is 2001-12-31. Until the date of withdrawal is reached the National and
27、the already published European standards both coexist. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Icelan
28、d, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 1 Scope This European Standard specifies data which is necessary for the planning, design, bidding, performance guarantees, construction, start-up and compliance testing of a wastewater t
29、reatment plant or parts of it. Differences in wastewater treatment throughout Europe have led to a variety of practices being developed. This standard gives fundamental informations about the practices; this standard has not attempted to specify all available practices. Detailed information addition
30、al to that contained in this standard may be obtained by referring to the bibliography. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the pub
31、lications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including
32、amendments). EN 1085 Wastewater treatment Vocabulary 1) in preparation Page 4 EN 12255-11:2001 prEN 12255-1:1996 Wastewater treatment plants Part 1: General construction principles 3 Terms and definitions For the purposes of this European Standard the terms and definitions given in EN 1085 and the f
33、ollowing apply: 3.1 plant a new wastewater treatment plant; an upgrading or extension of an existing wastewater treatment plant or a part of a new or extended wastewater treatment plant (e. g. sludge handling facilities) 3.2 client a municipality, city or other organisation which intends to build a
34、wastewater treatment plant or parts thereof, or its representative prEN 12255-1:1996 3.3 functional tender a tender document that contains the design loads, a description of the site where the plant is to be erected, the relevant discharge limits and any additional requirements NOTE Turn-key contrac
35、tors design the plant on the basis of the requirements and plans specified by the client (possibly with the assistance of a consulting engineer) and give bids on the plant as a whole in accordance with an overall guarantee. The turn-key contractor who secures the contract is responsible for the cons
36、truction and the start-up of the plant as well as for the compliance with requirements demanded in the tender documents (turn-key project). 3.4 sectional tender tender documents prepared for different sections of work for a plant NOTE e. g. earth work, concrete work, mechanical equipment, electrical
37、 installations, buildings etc. A plant is normally designed by a consulting engineer. Different companies may get the commission for the different sections. A consulting engineer may be commissioned to coordinate and to supervise the work. 3.5 consulting engineer an independant engineer commissioned
38、 by the client designing a plant or parts of it and/or supervising the construction NOTE He may assist the client with any work preparing all or part of the tender documents. He supervises the construction and checks the time schedule and costs. The consulting engineer has knowledge and experience i
39、n planning, design and operational aspects of wastewater treatment plants. In some countries a special certification may be required. 3.6 turn-key contractor a contractor building a plant or parts of it as a whole NOTE The turn-key contractor is a company which has knowledge and experience in planni
40、ng, design, construction and operational aspects of wastewater treatment plants. 4 Client options The client decides whether a functional tender or a sectional tender shall be prepared. The client may commission a consulting engineer to carry out one or more of the following: establish the design lo
41、ads and data as described in clause 5; prepare the tender documents for a functional tender; design the plant and estimate the costs and prepare the tender documents for the sectional tender; inspect the construction in case of functional tendering; supervise and coordinate the construction in case
42、of sectional tendering; evaluate the bids on the tenders and to propose which contractor or contractors (in case of sectional tendering) should be commissioned. Page 5 EN 12255-11:2001 5 Basic design data required Where applicable the following basic data either measured or estimated shall be provid
43、ed by the client or his representative e. g. consulting engineer. 5.1 Loading data 5.1.1 Sewerage system The data on the sewerage system should include: areas served by combined and/or separate sewers; proportions of flows and loads from separate and/or combined sewer systems in dry weather conditio
44、ns; storage capacity for storm water within the sewerage system; potential to control and balance flows and loads within the sewerage system; infiltration flows in dry weather conditions and their seasonal fluctuations (where appropriate); septic and corrosive components of the wastewater. 5.1.2 Pop
45、ulation served The data on the population served shall include: current population connected to the sewerage system; population connected at start-up of the plant; population connected at design horizon; seasonal variations of population (e. g. holiday periods); weekly variations of population (e. g
46、. movement of commuting population). 5.1.3 Significant trades and industries A list of trades and industries which discharge significant loads to the sewerage system should include the following flows and loads e. g.: COD, BOD5, KN, NH4-N, NO3-N, total phosphorus, total suspended solids, organic sus
47、pended solids, salinity and alkalinity; shown as current, start-up, and design target data for: hourly peak (m3/h, kg/h); weekly peak day (m3/d, kg/d); maximum weekly average (m3/week, kg/week); annual average (m3/a, kg/a). In addition, for trades and industries with seasonal fluctuations the period
48、s of high and low loads shall be included preferably as an annual diagram. The client shall specify dischargers who handle hazardous, toxic or inhibitory material and identify which precautions are necessary to prevent that hazardous, toxic or inhibitory materials being discharged. Organic discharge
49、s with low biodegradability should be specified. 5.1.4 Data from existing wastewater treatment plants The loading data and the operational results of the existing wastewater treatment plants contain valuable information. As a minimum the following data for at least the previous year shall be provided: annual wastewater flow (m3/a), proportions treated physically, chemically and biologically; average quantity (m3/d) and composition of sludge with % solids, and % volatile solids content and heavy metals; a