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HJ 915.1-2024: Technical requirements for site selection and infrastructure construction of surface water quality automated monitoring station
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Technical requirements for site selection and infrastructure construction of surface water quality automated monitoring station
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HJ 915.1-2024
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| HJ 915-2017 | English | 365 |
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Technical specifications for automatic monitoring of surface water (Trial)
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HJ 915-2017
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Basic data | Standard ID | HJ 915.1-2024 (HJ915.1-2024) | | Description (Translated English) | Technical requirements for site selection and infrastructure construction of surface water quality automated monitoring station | | Sector / Industry | Environmental Protection Industry Standard | | Word Count Estimation | 12,185 | | Date of Issue | 2024-12-25 | | Date of Implementation | 2025-07-01 | | Issuing agency(ies) | Ministry of Ecology and Environment | | Summary | This standard specifies the technical requirements for the site selection, station building and water sampling unit and other infrastructure construction and acceptance of the surface water quality automatic monitoring station. This standard applies to the site selection, infrastructure construction and acceptance of automatic surface water quality monitoring stations. | HJ 915-2017: Technical specifications for automatic monitoring of surface water (Trial)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
People's Republic of China national environmental protection standards
Technical specifications for automatic monitoring of surface water
2017-12-28 Published
2018-4-1 implementation
Directory
Foreword. Ii
1 scope of application .1
2 Normative references .1
3 Terms and definitions .1
4 surface water quality automatic monitoring system construction .2
5 surface water quality automatic monitoring system acceptance .3
Surface water quality automatic monitoring system operation and maintenance .4
7 Quality Assurance and Quality Control 7
8 data collection frequency and validity of discrimination .9
9 Establish a safeguard system 10
Appendix A (Normative) Surface Water Quality Automatic Monitoring Project Selection and Instrument Performance Requirements .11
Appendix B (Informative) Surface water quality automatic monitoring system construction technical requirements .13
Appendix C (Informative) Surface Water Quality Automatic Monitoring System Acceptance Technical Requirements .19
Foreword
In order to carry out the "Law of the People's Republic of China on Environmental Protection" and "Water Pollution Prevention and Control Law of the People's Republic of China", protect the environment and safeguard
Human health, strengthen environmental management, standardize automatic monitoring of surface water quality, the development of this standard.
This standard specifies the surface water quality automatic monitoring system construction, acceptance, operation and management of technical requirements.
Appendix A of this standard is a normative appendix, Appendix B and Appendix C are informative appendices.
This standard is released for the first time.
This standard by the Environmental Protection Department of Environmental Monitoring Division and Science and Technology Standards Division to develop.
This standard was drafted. China Environmental Monitoring Station, Jiangsu Province Environmental Monitoring Center, Liaoning Province Environmental Monitoring Laboratory, Henan
Provincial Environmental Monitoring Center, Wuxi City Environmental Monitoring Center Station.
This standard MEP approved on December 28,
This standard since April 1,.2018 come into operation.
This standard is interpreted by the MEP.
Surface Water Automatic Monitoring Technical Specifications (Trial)
1 scope of application
This standard specifies the surface water (except seawater) automatic monitoring system for water quality, acceptance, operation and management of technical requirements.
This standard applies to the surface water quality automatic monitoring system constructed by the environmental protection department.
2 Normative references
This standard references the following documents in the terms. For undated references, the effective version applies to this standard.
GB 3838 Surface Water Environmental Quality Standard
HJ/T 96 pH automatic water quality analyzer technical requirements
HJ/T 97 conductivity automatic water quality analyzer technical requirements
HJ/T 98 Turbidity water quality automatic analyzer technical requirements
HJ/T 99 dissolved oxygen (DO) automatic water quality analyzer technical requirements
HJ/T 100 permanganate index automatic water quality analyzer technical requirements
HJ/T 101 ammonia nitrogen automatic water quality analyzer technical requirements
HJ/T 102 total nitrogen water quality automatic analyzer technical requirements
HJ/T 103 total phosphorus automatic water quality analyzer technical requirements
HJ/T 104 total organic carbon (TOC) automatic water quality analyzer technical requirements
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Surface water quality automatic monitoring
The entire process of automatic collection, processing, analysis and data transmission of surface water samples.
3.2
Automatic water quality monitoring station
Refers to the completion of the on-site part of the automatic monitoring of surface water quality, generally by the station house, water distribution, control, testing, data transmission, etc.
Or several units, referred to as water station.
3.3
Surface water quality automatic monitoring data platform automatic water quality monitoring center
Remote monitoring of water stations, data transmission statistics and applications of the system, referred to as the data platform.
3.4
Surface water quality automatic monitoring system
Automatic monitoring system consisting of water station and data platform.
3.5
Conventional five parameters
Five general items in surface water quality monitoring. water temperature, pH, dissolved oxygen, conductivity and turbidity.
4 surface water quality automatic monitoring system construction
4.1 General requirements
Surface water quality automatic monitoring system construction include. site selection, building site construction, water station units and data platform.
Among them, the instrument performance index should meet the requirements of Appendix A.2, system construction refer to Appendix B requirements.
4.2 site selection
Site selection principles include site feasibility, water quality representation, long-term monitoring, system security and operational economy.
In order to ensure the long-term stable operation of automatic water quality monitoring system, the selected site should have good traffic, electricity, clean water,
Communication, water collection point distance, water harvesting headwater, dry water harvesting feasibility and operation and maintenance of safety and other basic conditions of the station.
The monitoring results of the selected sites can represent the monitoring of water quality and trends. River monitoring section generally choose the water quality
Evenly distributed, stable velocity straight river, from the upstream into the estuary or outfall more than 1 km distance, in principle, with the conventional routine monitoring
The same or similar sections, in order to ensure the continuity of monitoring data. Lake reservoir section to have a better hydraulic exchange, the location can be comprehensive
Reflect the real situation of water quality in the lake area in the monitored area, avoid setting backwater area, stagnant water area and easy to cause siltation and aquatic growth place.
4.3 station building
Building site construction site based on the site environment, construction period, monitoring equipment and equipment installation conditions, the actual situation, the use of fixed station,
Simple station building, small-scale station, water platform station, water buoy (ship) station and other means of system construction. Station building design
Combined with the construction of geological structure, water level, climate and other surrounding environmental conditions, while lightning, seismic, flood control, anti-low temperature, anti-
Rodents, fire, anti-theft, anti-power and video surveillance and other measures. Station supporting the design of waste disposal and domestic sewage collection facilities.
The construction of fixed station houses includes the main building and the external security conditions for carrying system instruments and equipment. The main building by the instrument
Inter-room, quality control and on duty personnel between the composition. External security conditions refer to the introduction of clean water, electricity, communications and open roads as well
Land leveling, afforestation and curing stations under the jurisdiction of the area.
Simple station buildings and small-scale station for a limited area, complex geographical conditions, the project construction period is shorter, there are relocation or
Adjust the monitoring section of the water station construction. Station design should meet the installation of instrumentation and system integration device installation requirements, station materials should be
Lightweight, thermostatic, thermal, rain and alarm functions.
Water fixed platform station and water buoy (ship) station is the monitoring equipment integrated on the platform, and equipped with solar, wind and other power supply
Equipment, with warning collision and alarm functions such as a monitoring system.
4.4 water station construction of each unit
4.4.1 Water Distribution Unit
Acquisition and distribution unit is to ensure the normal operation of the entire system to obtain the correct data, a key part of the water must be provided to ensure reliable,
Effective, including water harvesting unit, pretreatment unit and water distribution unit. Water harvesting unit includes water harvesting method, water pump, water pipeline laying and so on.
The pretreatment unit is equipped with pretreatment devices for different monitoring items to meet the requirements of analytical instruments such as settling time and filtration accuracy of water samples.
Water distribution unit directly to the automatic monitoring equipment water supply, water quality, water pressure and water must meet the requirements of automatic monitoring equipment.
4.4.2 Control Unit
The control unit is the command center that coordinates the coordination of all units in the system.
4.4.3 detection unit
The detection unit is the core part of the automatic water quality monitoring system and consists of automatic monitoring equipment that meets the requirements of each test item. instrument
The principle of selection for the accuracy of the instrument to meet the requirements of water quality analysis and analytical methods in line with state regulations. The selected instrument configuration
Reasonable, stable performance; operation and maintenance costs are reasonable, less maintenance, secondary pollution is small.
4.4.4 data acquisition and transmission unit
Data acquisition and transmission requirements are automatically performed in accordance with the analysis cycle, and remote control, automatic encryption and backup. Collecting equipment
Set in accordance with national standards using a unified communication protocol, wired or wireless way to achieve the main parameters of the state and the transmission of data.
4.5 data platform construction
Data platform is a set of data and state acquisition, processing and reporting of all kinds of operating systems in one, with the field data and the main
Acquisition of state parameters, conditional anti-control of field systems and instruments, data analysis and management, report generation and reporting, alarm and other services
Features. Data platform software using secure and stable data transmission, with regular automatic backup, automatic classification alarm and remote monitoring
Control and other functions, and has scalability.
5 surface water quality automatic monitoring system acceptance
5.1 General requirements
Surface water quality automatic monitoring system acceptance, including station building and external security facilities, construction acceptance, acceptance of equipment and data transmission and
Data platform acceptance. Acceptance of specific content and the corresponding form, see Appendix C.
5.2 Acceptance Procedure
a) Conduct instrument performance test and laboratory comparison, entrust a qualified unit to test the infrastructure of power supply and lightning protection for station buildings,
And according to the scheduled time for trial operation;
b) prepare acceptance report, put forward acceptance application;
c) Check the completion of the scene, organize the acceptance meeting, the formation of acceptance;
d) organize the inspection information and archives.
5.3 Acceptance of basic conditions
Surface water quality automatic monitoring system acceptance should have the following conditions.
a) The power supply, communication, water supply, traffic and lightning protection, fire prevention and anti-theft infrastructure of the station building shall meet the requirements;
b) monitoring equipment and accessories in accordance with the contract delivery, the appearance of non-destructive;
c) Complete the instrument performance test, comparison experiment, technical indicators to meet the relevant national technical specifications and contract requirements;
d) Complete the communication test of water quality automatic monitoring system and upload data from water station to data platform;
e) To complete the automatic surface water quality monitoring system for at least 30 consecutive days of operation;
f) Establish an automatic monitoring system for surface water quality and prepare a report on acceptance.
5.4 Acceptance Content
5.4.1 station house and external security facilities acceptance
The completion and acceptance of the station building and the external support facilities shall conform to the national standards, the current quality inspection and evaluation standards, the construction acceptance rules,
Examination and approval of the design documents and relevant laws, regulations, rules and regulatory requirements. Check the quality of engineering entities, check the project
Construction of the parties involved in the completion of construction materials, the use of construction projects to conduct random checks, tests. Acceptance process found problems, up
Less than the completion of the acceptance criteria, should be instructed to immediately rectify the construction side, re-determine the time to complete the organization and acceptance. Station building technical requirements
Appendix B and the contract.
5.4.2 equipment acceptance
5.4.2.1 arrival acceptance
According to the contract for each automatic monitoring equipment, system integration equipment, data platform hardware systems, data acquisition control system
Inventory; check the packing list according to specific equipment, spare parts, factory number and quantity; check the appearance of equipment, spare parts, on the emergence of
View damaged parts of the photo and deal with the contract.
5.4.2.2 equipment performance acceptance
Performance acceptance of equipment mainly for the performance of the equipment specified in this standard test, each device should be in the sign
Meet the requirements of the environment, inspection indicators and criteria to meet the relevant indicators in Table A.2 Appendix A, the relevant standards and contracts to
begging. Acceptance of the main contents include but are not limited to the following. equipment installation, power, warm-up test, the instrument initialization test, equipment
Basic function verification, detection limit, accuracy, precision, standard curve check, zero drift, range drift and response time check,
Repeatability or reproducibility error checking, actual water sample alignment, record results and summary.
5.4.3 Data transmission and data platform acceptance
Automatic monitoring equipment in the performance of qualified acceptance of the premise, check the automatic monitoring system data transmission, data platform features, soft
Pieces of performance indicators such as whether the national standard and the relevant technical indicators of the contract requirements.
Surface water quality automatic monitoring system operation and maintenance
6.1 General requirements
Surface water quality automatic monitoring system operation and maintenance, including regular water station routine maintenance, maintenance and repair, troubleshooting, downtime
Protection and daily management of data platform and records.
6.2 water station operation and maintenance technical requirements
6.2.1 Routine maintenance
Routine maintenance includes site inspection, instrument and system check, consumable replacement, consumable replacement, reagent replacement, pipe cleaning
Wait for work. The operation and maintenance unit regularly patrols the water station. The inspection frequency shall not be lower than once a week and the inspection conditions shall be recorded. Each
Patrol the water station for the following work.
a) Check the running status and main technical parameters of each analytical instrument and auxiliary equipment to judge whether the operation is normal or not; Check the instrument
Power supply, process temperature, stirring motor, sensors, electrodes and timing are working properly, check for leaks, tubes
Whether there are bubbles in the road, etc .; regular cleaning regular five parameters, chlorophyll and blue-green algae electrode;
b) Develop consumables and consumables (such as pump tubes, fittings, fittings, fittings, etc.) according to the operation of the equipment, the water quality of the section and the environmental conditions of the water station,
Seals, etc.) replacement cycle, and ensure that the use of consumables to complete the replacement before use; if you need to replace the parts (such as electricity
Pole, etc.), should be equipped with stock guarantee timely replacement;
c) Check the reagent status, add regularly, replace the reagent. Pure water and reagents used to achieve the relevant technical requirements, the replacement cycle is not
Too much over the shelf life of the reagents and procedures specified in the operating instructions or instrumentation, the replacement cycle should be shortened when the room temperature is high. Every time more
After changing the main reagent, the instrument should be recalibrated according to the corresponding operation rules or instrument instructions. Reagents preparation work should be qualified
Laboratory completed, to provide proof of source of reagents, and post the label;
d) timely finishing station buildings and equipment to complete the collection of waste and deal with the disposal of the work according to the relevant provisions of the requirements, and retained for future reference;
Maintain the water station station and clean and tidy all the instruments, promptly close the windows and doors, avoid direct sunlight all kinds of analytical instruments;
e) check the water harvesting system, water distribution system is normal, such as water floats fixed situation, self-priming pump operation, etc .; regular cleaning
Acquisition and distribution system, including mining head, bucket, pump body, grit chamber, filter head, sample cups, valves, related piping,
Can not be cleaned for timely replacement;
f) Check the water station circuit system is normal, the grounding line is reliable, check the sampling and drain lines for leakage or plug
Phenomenon, drainage exhaust work is normal;
g) Check the station air-conditioning and insulation measures to maintain temperature stability; check the pump and air compressor fixed to prevent vibration of the instrument;
Check air compressor, uninterruptible power supply (UPS), algae removal device, pure water and other auxiliary facilities operating conditions, the timely replacement of supplies,
And emptying air compressor water;
h) check the IPC running status, whether poisoning, at least quarterly backup of field data and control software; tester
Whether the communication line between the device and the system is normal, whether the data deviation of the analog transmission meets the requirements;
i) weeds and water around the station should be promptly cleared to check the reliability of lightning protection facilities, whether there is leakage of the station building, station building
Other peripheral facilities are damaged or flooded, in case of the above problems in a timely manner to ensure the safe operation of the system. in
Before the advent of the freezing period, it is necessary to carry out maintenance work such as water pipelines and site insulation.
j) Make routine routine maintenance work record, important work content photo archive.
6.2.2 maintenance inspection
According to the environmental conditions of the system operation, the system is running at the required time to prevent equipment failure occurred overhaul.
In the standby equipment as a guarantee, the use of spare equipment will be running water station monitoring and analysis equipment replaced, sent to the real
Laboratory maintenance; if there is no backup equipment protection, can be on-site maintenance and overhaul. Maintenance and repair plan should be based on the system instrument
Equipment configuration and equipment requirements of the use of manuals to develop.
a) water monitoring equipment at least once a year maintenance and repair;
b) According to the requirements provided by the manufacturer for use and maintenance manual, according to the service life, replace the lamp, electrode,
Peristaltic pumps, sensors and other key components;
c) Liquid leak and pressure check on the instrument; check and clear the light path, liquid path, circuit board and various connectors and sockets
Clean
d) check and calibrate the output zero and full scale of the instrument, and check the output linearity of the instrument;
e) After each comprehensive maintenance and overhaul, or replace the instrument of light, electrodes, peristaltic pumps, sensors and other key components
After the instrument must be re-calibration and inspection, and record the maintenance calibration.
6.2.3 Troubleshooting
Troubleshooting refers to the failure of the equipment for targeted inspection and maintenance. Troubleshooting should be done.
a) According to the characteristics of the instrument used and the maintenance manual provided by manufacturers to formulate common fault judgment and maintenance work instructions;
b) For problems that can be diagnosed in the field and can be solved by replacement of spare parts (for example, solenoid valve control failure, cracked tubing,
Liquid blockage and light source aging issues), then on-site maintenance;
c) For other faults that are not easily diagnosed and overhauled, spare instruments should be used instead of the faulty instrument, and the malfunctioning instrument
Or accessories to the laboratory or equipment manufacturers for inspection and repair;
d) After each troubleshooting, the instrument should be calibrated according to the inspection and replacement parts. For ordinary wearing parts
Maintenance (such as replacement of pump tubes, cooling fans, fluid connectors or connectors, etc.) at least to do standard calibration; for the key components
Maintenance (such as the movement of mechanical parts, optical parts, test parts and signal processing components of the maintenance), according to instrument standards
Fan requires standard curve and precision checks. All overhaul content according to the requirements of the record for future reference.
6.2.4 downtime maintenance
Short downtime (downtime less than 24 h). General shutdown, re-run the instrument to be recalibrated.
Long shutdown (continuous shutdown for more than 24 h). Turn off the analyzer when the analyzer needs to be shut down for 24 h or longer
And the injection valve, turn off the power; clean the peristaltic pump and the reagent tubing of the analytical instrument with pure water, clean the measuring chamber and empty it; be sure to remove
Measure the electrode and immerse the tip in a protective solution for storage. The instrument must be recalibrated when running again.
6.3 Data platform daily management
Data platform must arrange personnel to understand the equipment operation and water quality situation, every morning and afternoon through the data platform software
Process adjustment to see the water station monitoring data at least 1 times, according to the situation to organize inspection, verification, maintenance and other work to protect the normal water station
Full operation. The daily management of the data platform includes.
a) Check the data transmission of each water station, the instrument and related system parameters and data, identify problems and deal with them in time;
b) When there is any continuous abnormal data, the technician should be immediately dispatched to the scene for investigation, if necessary, the actual water sample should be collected
Perform manual analysis
c) retrieve and analyze water station monitoring data;
d) report the monitoring results;
e) to ensure that the computer system with backup and backup hardware and software normal operation; regular system software, water quality monitoring software, antivirus
Software upgrade update; quarterly backup system monitoring data;
f) do a good job of daily management of data platform records.
6.4 Record
In the automatic monitoring system operation, the instrument performance verification, inspection, spare parts replacement, calibration, maintenance, reagent preparation and number
According to the daily work of the platform to record, to ensure that all aspects of the work record integrity, comprehensive and accurate. On the problems and place
Reasonable description to be informative, continuous...
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