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BSI PD CEN/TR 17614:2021

BSI PD CEN/TR 17614:2021

$198.66

Standard method for assessing and improving the energy efficiency of waste water treatment plants

Published By Publication Date Number of Pages
BSI 2021 66
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This document defines a methodology for determining and assessing the energy efficiency of Waste Water Treatment Plants (WWTP). The methodology aims at describing, in a systematic way, the various steps required to establish the Water Treatment Energy Index (WTEI) of a particular WWTP.

The methodology includes the classification of WWTPs in different types, identification of different stages of treatment, identification of key performance indicators (KPIs), overview of existing energy monitoring standards and the detailed description of the methodology, including a step by step guideline of how to apply and implement it.

The methodology is divided in 2 sub-methods that should be selected and followed according to the following goals:

  1. The Rapid Audit ( RA) method allows for a quick estimation of the water treatment energy index (WTEI) based on existing information such as historical data pertaining to energy use records along with influent and effluent quality values. The aim of this methodology is to provide a WWTP energy benchmark, a rapid tool to identify energy efficiencies and inefficiencies so further actions can be planned, as well as to evaluate the impact of WWTP retrofitting.

    The Rapid Audit methodology is detailed step by step in Clause 4 of this TR and can be used as a standalone document. The application of the Rapid Audit methodology to one real WWTP is shown in Annex A.

  2. The Decision Support ( DS) method requires intensive monitoring across a WWTP of energy usage and water quality parameters that provides an accurate and detailed calculation of WTEI for each stage as well as its overall value for the plant. The goal of this assessment is to serve as a diagnosis of the functions/equipment in a plant that may lead to poor energy efficiency performance.

    The Decision Support methodology is detailed step by step in Clause 5 of this TR and can be used as a standalone document. The application of the Decision Support methodology to one real WWTP is shown in Annex B.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative References
3 Terms and definitions
4 General considerations of methodologies
8 5 Methodology for Rapid Audit (RA)
5.1 General
5.2 Identification of the WWTP typology
9 5.3 Energy consumption data collection
5.3.1 Energy consumption data
11 5.3.2 Energy producing WWTPs and sludge imports
5.3.3 Chemical energy consumption
12 5.3.4 Total energy consumption estimation
13 5.4 Identification of the WWTP boundaries and calculation of Key Performance Indicators (KPIs)
17 5.5 Calculation of the Water Treatment Energy INDEX (WTEI) as a single indicator
20 6 Methodology for Decision Support (DS)
6.1 General
6.2 Identification of the WWTP typology
21 6.3 WWTP boundaries
24 6.4 Request required approvals and keep communication (operators, site managers, process engineers, budget holders and other possible end users) and health safety considerations
6.5 Create database describing all equipment on site
26 6.6 Select equipment for online monitoring and install online monitors according to manual
6.7 Energy consumption data collection
6.7.1 Energy consumption data
28 6.7.2 Chemical energy consumption
29 6.7.3 Energy producing WWTPs and sludge imports
30 6.7.4 Gross and net energy consumption at stage estimation
6.8 Key Performance Indicators (KPIs)
42 6.9 Monitor site for KPIs (how often to monitor, methods used for monitoring)
6.10 Water Treatment Energy Index (WTEI) as a composite indicator
46 Annex A (informative)Rapid Audit methodology applied to a case study
A.1 Introduction
A.2 Case Study Structure
50 Annex B (informative)Decision Support methodology applied to a case study
B.1 Introduction
B.2 Case Studies Structure
60 Annex C (informative)Overview of training of auditors
C.1 Training of people on the online tool and audits
61 C.2 Audit, data collection and validation

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BSI PD CEN/TR 17614:2021
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