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According to the requirements of Notice on Issuing "Development and Revision Plan of National Engineering Construction Standards and Codes in 2014 (JIANBIAO [2013] No. 169) issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China, this code is revised by the code drafting group based on extensive investigation, careful summarization of practical experience, reference to relevant international and foreign advanced standards and widely solicition for opinions.
This code covers the following main technical contents: general provisions (Chapter 1), terms (Chapter 2), basic requirements (Chapter 3), engineering survey (Chapter 4), foundation (Chapter 5), wastewater and sludge treatment structure (Chapter 6), wastewater treatment equipment installation (Chapter 7), sludge treatment equipment installation (Chapter 8), electrical equipment installation (Chapter 9), automation and monitoring system (Chapter 10), pipeline installation engineering (Chapter 11), auxiliary engineering (Chapter 12) and functional test and combined trial operation (Chapter 13).
The following main technical contents have been revised with respect to this code: 1. Frame construction of the former code is adjusted and modified, the original construction survey is modified as the engineering survey, the orginal chapeters "wastewater treatment structure", "sludge treatment structure" and "pump room engineering" are combined into the chapter "wastewater and sludge treatment structure", the orginal chapter "electromechanical equipment installation engineering" is divided into three chapters "wastewater treatment equipment installation", "sludge treatment equipment installation" and "electrical equipment installation", biogas cabinet (tank) and pressure vessel engineering are incorporated in the chapter "sludge treatment equipment installation" and the chapter "functional test and combined trial operation" is added; 2. Requirements of acceptance of constructional quality, division of acceptance of constructional quality, and procedure and organization of acceptance of constructional quality are defined; 3. Requirements of acceptance of foundation and pipeline engineering are revised; 4. Requirements of acceptance of cast-in-place reinforced concrete structure, prefabricated reinforced concrete structure, prestressed reinforced concrete structure, joint position between structure and equipment and accessory structure are refined; 5. Requirements of acceptance of wastewater treatment equipment installation and sludge treatment equipment installation are improved; 6. Requirements of acceptance of electrical equipment installation and automation system installation are revised.
In this code, the provision(s) printed in bold type is (are) compulsory one(s) and must be enforced strictly.
The Ministry of Housing and Urban-Rural Development of the People's Republic of China is in charge of the administration of this code and the explanation of the compulsory provisions and Tianjin Urban Construction (Group) Co., Ltd. is responsible for the explanation of specific technical contents. Any comment or suggestion arising from the implementation of this standard is kindly requested to be sent to Tianjin Urban Construction (Group) Co., Ltd. (address: No.260 Anshan West Road, Nankai District, 300073, Tianjin).
Code for Quality Acceptance of Municipal Wastewater Treatment Plant Engineering
1 General Provisions
1.0.1 This code is formulated with view to strengthening quality management of municipal wastewater treatment plant engineering, unifying acceptance criteria of municipal wastewater treatment plant engineering, guaranteeing constructional quality and realizing cost effectiveness, safety and reliability.
1.0.2 This code is applicable to quality acceptance of constructed, renovated and extended municipal wastewater treatment plant engineering.
1.0.3 Quality acceptance of municipal wastewater treatment plant engineering shall not only meet the requirements of this code, but also comply with those stipulated in the current relevant standards.
2 Terms
2.0.1 wastewater treatment plant
the place where wastewater and sludge are purified and treated by physical, chemical, biological and other methods, which is also referred to as water treatment plant and water reclamation plant
2.0.2 functional test
the process of testing and inspecting use function and safety performance of unit, division and section works of wastewater treatment plant
2.0.3 single trial operation
the operation test process carried out after installation of equipment with independent use functions
2.0.4 combined trial operation
the operation test process of on-load linkage test for the system treatment facilities and equipment carried out in order to verify the safety and reliability of the system
3 Basic Requirements
3.1 General Requirements
3.1.1 Quality acceptance of wastewater treatment plant engineering shall be participated by the development, survey, design, construction, supervision, operation and other units.
3.1.2 Requirements for all participants in the quality acceptance of the wastewater treatment plant engineering shall be determined in combination with actual engineering conditions.
3.1.3 Development unit shall organize to develop quality acceptance plan of wastewater treatment plant engineering, which shall cover the following contents:
1 Organizational form of acceptance;
2 Reference standards and documents of acceptance;
3 Steps and procedures of acceptance;
4 Time, schedule and plan of acceptance;
5 Acceptable quality level (AQL).
3.1.4 Instruments, apparatus, equipment and inspection tools used in the quality acceptance of wastewater treatment plant engineering can be used only after they pass the verification by the metrological verification institution.
3.1.5 Inspection methods for the quality acceptance of wastewater treatment plant engineering shall include conducting visual inspection, inspecting various records, inspecting test (inspection) report and conducting actual measurement and shall meet the following requirements:
1 Visual inspection shall be carried out on appearance, smell, status, orientation, tightness and other attributes of the engineering by watching, touching, wrenching and coating foaming solution etc.;
2 Various records shall include construction record during construction, construction process information, supervision inspection record and acceptance record etc.; time, place, specific item/content, participants and their work division in supervision inspection record, acceptance record and other record shall be checked; all records shall be provided with complete and clear inspection results, work arrangement and requirements;
3 Test (inspection) report shall include test, experiment, inspection and other reports issued by qualified inspection unit; time, object, item/content and others of engineering construction process shall be checked, and test, experiment, inspection and other report shall be provided with clear conclusions;
4 Actual measurement shall include the measurement on overall dimension and structural performance of the engineering as well as the installation precision of equipment by means of various tools and instruments; environmental conditions, conditions of equipment and instruments, inspection items/contents, inspection time and place as well as methods, personnel and results of actual survey and measurement and other contents shall be recorded.
3.1.6 Record completed during quality acceptance of wastewater treatment plant engineering shall not only be accurate and complete, but also meet the relevant requirements of current national standards GB/T 50328 Code for Construction Project Document Filing and Arrangement and JGJ/T 185 Management Specification of Construction Engineering Documentation.
3.1.7 Constructional quality of the wastewater treatment plant engineering shall not only meet the relevant requirements of current national standards, but also comply with engineering construction document, survey and design document and equipment technical documents.
3.1.8 In the quality acceptance of wastewater treatment plant engineering, the following documents shall be provided:
1 Engineering construction project contract;
2 Geological survey information, construction drawing design document and design change;
3 Construction organization design and special construction scheme;
4 Construction record, test record, inspection record, supervision inspection record as well as quality inspection record and engineering meeting minute of unit (subunit) work, division (subdivision) work, section work and inspection lot items of the wastewater treatment plant;
5 Inspection and acceptance documents applied in four new techniques, including special scheme and expert demonstration document, etc.;
6 Other documents to be verified.
3.1.9 After the engineering passes the comprehensive completion acceptance, development unit shall put the completion acceptance report and relevant documents on file.
3.2 Requirements of Acceptance of Constructional Quality
3.2.1 Acceptance of constructional quality shall be divided into acceptance of unit (subunit) work, division (subdivision) work, section work and inspection lot of structure (building) engineering, acceptance of unit (subunit) work, division (subdivision) work and section work of installation engineering, acceptance of auxiliary engineering, acceptance of combined trial operation and comprehensive completion acceptance.
3.2.2 Division of acceptance of constructional quality shall meet the following requirements:
1 Unit (subunit) work shall have independent construction conditions and be able to form independent use function or can be regarded as seperate cost accounting object;
2 Division (subdivision) work shall be divided by technicality or construction position and other;
3 Section work shall be divided by main work type, material or construction process, equipment category and other;
4 Section work can be consisted of one or several inspection lots, which may be dividied according to construction and quality control and professional acceptance requirements.
3.2.3 Wastewater treatment plant engineering shall be subject to division of acceptance according to those specified in Annex A and be examined by the supervision unit. Any part uncovered in Annex A hereof can be determined by the development unit after the negatiation with the construction and supervision units.
3.2.4 Acceptance record of wastewater treatment plant structure engineering shall be completed according to the format specified in the current national standards GB 50300 Unified Standard for Constructional Quality Acceptance of Building Engineering and GB 50141 Code for Construction and Acceptance of Water and Sewerage Structures; acceptance record of installation engineering shall be completed according to the format specified in the current national standards GB 50252 Unified Standard for Constructional Quality Acceptance of Industrial Installation Engineering and GB 50268 Code for Construction and Acceptance of Water and Sewerage Pipeline Works; records for equipment single trial operation shall be completed according to the format specified in the Annex B hereof, while the records for equipment combined trial operation shall be completed according to the format specified in Annex C hereof.
3.2.5 Quality acceptance of unit (subunit) work, division (subdivision) work, section work and inspection lot of structure (building) engineering shall meet the relevant requirements of the current national standards GB 50300 Unified Standard for Constructional Quality Acceptance of Building Engineering and GB 50141 Code for Construction and Acceptance of Water and Sewerage Structures.
3.2.6 Quality acceptance of unit (subunit) work, division (subdivision) work and section work of installation engineering shall meet the relevant requirements of the current national standards GB 50252 Unified Standard for Constructional Quality Acceptance of Industrial Installation Engineering and GB 50268 Code for Construction and Acceptance of Water and Sewerage Pipeline Works.
3.2.7 Quality acceptance of auxiliary engineering shall meet the relevant requirements of Chapter 12 herein.
3.2.8 Quality acceptance of combined trial operation shall meet the relevant requirements of Chapter 13 herein.
3.2.9 Comprehensive completion quality acceptance shall meet the following requirements:
1 Quality acceptance of all unit (subunit) works shall be qualified;
2 Acceptance of combined trial operation shall be qualified;
3 Quality acceptance record shall be complete;
4 Projects with respect to safety, energy conservation, environmental protection and main use functions shall pass the acceptance.
3.3 Procedure and Organization of Acceptance of Constructional Quality
3.3.1 Quality acceptance of wastewater treatment plant engineering shall be organized by the development unit or supervision unit and participated by the construction, supervision, survey, design, operation and other unit.
3.3.2 Procedure and organization of quality acceptance of wastewater treatment plant engineering shall meet the following requirements:
1 The professional supervision engineer shall organize the professional project quality inspector and professional construction foreman of the construction unit to carry out the acceptance of inspection lot.
2 The professional supervision engineer shall organize professional project technical leader of the construction unit to carry out the acceptance of the section work.
3 The chief supervision engineers shall organize supervision engineers, construction unit project leader and project technical leaders of various disciplines to carry out the acceptance of the division (subdivision) work. The project leaders of survey and design units and technical and quality department leaders of the construction unit shall participate in the acceptance of section works of foundation; project leader of the design unit and technical and quality department leaders of the construction unit shall participate in the acceptance of section projects such as main structure and main electromechanical equipment installation.
4 Project leader of the development unit shall organize the project leaders of the supervision, construction, design and other units to carry out the acceptance of the unit (subunit) work.
5 After the wastewater treatment plant passes the acceptance of unit (subunit) work, the project leader of the development unit shall organize project leaders of the supervision, construction, survey, design and other units to carry out the combined trial operation, and the construction unit shall submit comprehensive completion report of the engineering to the development unit and apply for comprehensive completion accpetance of the engineering.
6 Upon receipt of the application report for comprehensive completion of the engineering, the development unit shall organize acceptance committee or acceptance team to carry out the comprehensive completion acceptance of the engineering. The acceptance committee or acceptance team shall consist of relevant leaders of the construction, survey, design, construction, supervision, operation and management and other units as well as safety, fire-fighting, environmental protection and other personnel concerned.
7 After the comprehensive completion acceptance is qualified, the development unit shall timely submit the comprehensive completion acceptance report of the engineering.
3.3.3 After the comprehensive completion acceptance of the wastewater treatment plant engineering, the development unit shall put relevant development document, survey and design documents, construction document, acceptance document and other on file.
4 Engineering Survey
4.1 General Requirements
4.1.1 Acceptance of wastewater treatment plant engineering survey shall include acceptance of horizontal and vertical control network survey, acceptance of construction survey of structure (building), pipeline, equipment installation and ancillary and auxiliary engineering, acceptance of engineering settlement observation, and acceptance of inflow/outflow elevation and position of wastewater treatment plant.
4.1.2 In the acceptance of engineering survey, the following documents shall be inspected:
1 Acceptance and inspection application documents of engineering survey;
2 Survey and stake delivery records;
3 Survey record of original torography and landform in plant area;
4 Construction survey record;
5 Supervision survey record;
6 Settlement observation record;
7 Verification report of measuring instruments and tools;
8 Other relevant documents.
4.1.3 In the acceptance of engineering control survey, horizontal control network and vertical control network in the plant area shall be actually measured.
4.1.4 Control axis of the wastewater treatment plant engineering may be selected at the position specified in the design drawing of the structure (building) and shall be closed in the control network.
4.1.5 Control coordinate and main axis of plant area as well as bolts and piles set at grid control point and vertical control point shall be regularly inspected, checked and re-surveyed.
4.1.6 Engineering construction survey shall be subject to intra-group re-survey system, recheck system and supervision re-survey system, for which a record shall be completed.
4.1.7 In the acceptance of equipment installation survey, equipment installation reference line, elevation reference point, elevation and plane position etc. shall be actually measured.
4.1.8 In the setting-out of the trenching for various underground pipelines in the plant are, axis, elevation and section shall be controlled.
1 General Provisions
2 Terms
3 Basic Requirements
3.1 General Requirements
3.2 Requirements of Acceptance of Constructional Quality
3.3 Procedure and Organization of Acceptance of Constructional Quality
4 Engineering Survey
4.1 General Requirements
4.2 Horizontal Survey
4.3 Vertical Survey
5 Foundation
5.1 General Requirements
5.2 Earthwork Excavation and Backfilling
5.3 Foundation Treatment
5.4 Pile Foundation
6 Wastewater and Sludge Treatment Structure
6.1 General Requirements
6.2 Cast-in-place Reinforced Concrete Structure
6.3 Prefabricated Reinforced Concrete Structure
6.4 Prestressed Reinforced Concrete Structure
6.5 Joint Position between Structure and Equipment
6.6 Accessory Structure
7 Wastewater Treatment Equipment Installation
7.1 General Requirements
7.2 Screen Equipment
7.3 Screw Conveyor
7.4 Pump Equipment
7.5 Grit Removal Equipment
7.6 Aerator
7.7 Agitator
7.8 Sludge Discharger
7.9 Inclined Board and Tube
7.10 Filtration Equipment
7.11 Microfiltration/Ultrafiltration Membrane Equipment
7.12 Reverse Osmosis Membrane Equipment
7.13 Dosing Equipment
7.14 Blower and Compressor
7.15 Ozone Generaton System
7.16 Disinfection Equipment
7.17 Dewatering and Thickening Equipment
7.18 Deodorization Equipment
7.19 Water Decanter
7.20 Sluice Gate and Valve
7.21 Weir, Weir Plate and Header Tank
7.22 Parshall Flume
7.23 Crane
8 Sludge Treatment Equipment Installation
8.1 General Requirements
8.2 Steel Sludge Digester
8.3 Agitator in Sludge Digester
8.4 Heat-exchanger
8.5 Biogas Desulfurization Equipment
8.6 Biogas Cabinet
8.7 Biogas Boiler
8.8 Biogas Alternator, Biogas Driving Blower and Biogas Compressor
8.9 Biogas Torch
8.10 Sludge Mixing Equipment
8.11 Sludge Spreader
8.12 Belt Conveyor
8.13 Sludge Turner
8.14 Sludge Screening Equipment
8.15 Sludge Storage
8.16 Sludge Drying Equipment
8.17 Bucket Conveyor
8.18 Dry Sludge Storage
8.19 Sludge Incineration Equipment
8.20 Smoke and Dust Elimination Equipment
9 Electrical Equipment Installation
9.1 General Requirements
9.2 Reactive Power Compensation Equipment
9.3 Power Transformer
9.4 Electromotor
9.5 Switch Cabinet, and Control Panel (Cabinet or Box)
9.6 Uninterruptible Power System
9.7 Cable Tray
9.8 Cable and Conduit
9.9 Earthing Equipment, Lightning Protection Device and Equipotential Bounding
10 Automation and Monitoring System
10.1 General Requirements
10.2 Central Control System
10.3 Control (Instrument) Panel, Cabinet and Box
10.4 Instruments
10.5 Monitoring Equipment
10.6 Actuator and Regulation Valve
11 Pipeline Installation Engineering
11.1 General Requirements
11.2 Process Pipeline
11.3 Auxiliary Pipeline
12 Auxiliary Engineering
13 Functional Test and Combined Trial Operation
13.1 General Requirements
13.2 Functional Tests for Structures
13.3 Functional Tests for Pipeline
13.4 Combined Trial Operation
13.5 Other Tests
Annex A Work Division for Engineering Acceptance of Wastewater Treatment Plant
Annex B Records for Single Trial Operation of Equipment Installation Engineering
Annex C Records for Combined Trial Operation of Wastewater Treatment Plant
Explanation of Wording
List of Quoted Standards
