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HJ 354-2019 PDF EnglishSearch result: HJ 354-2019_English: PDF (HJ354-2019)
HJ354-2019: PDF in EnglishHJ 354-2019 NATIONAL ENVIRONMENTAL PROTECTION STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Replacing HJ/T 354-2007 Technical specification for check and acceptance of wastewater on-line monitoring system (CODCr, NH3-N et al.) ISSUED ON: DECEMBER 24, 2019 IMPLEMENTED ON: MARCH 24, 2020 Issued by: Ministry of Ecology and Environment Table of Contents Foreword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Terms and definitions ... 6 4 Acceptance conditions and acceptance content ... 8 5 Construction acceptance requirements ... 9 6 Acceptance requirements for wastewater online monitoring equipment ... 12 7 Network acceptance requirements ... 19 8 Acceptance requirements for operation and maintenance program ... 20 9 Requirements for preparation of acceptance report ... 21 Appendix A (Normative) Acceptance report format ... 22 Appendix B (Normative) Format of comparison monitoring report ... 33 Technical specification for check and acceptance of wastewater on-line monitoring system (CODCr, NH3-N et al.) 1 Scope This standard specifies the acceptance conditions and acceptance procedures of the wastewater online monitoring system; the acceptance requirements for water pollution source discharge outlets, flow monitoring units, monitoring stations, automatic water sampling units and data control units; the acceptance methods and acceptance technical indicators of flow meters, water quality automatic samplers and water quality automatic analyzer; as well as the acceptance content of the operation and maintenance plan of the wastewater online monitoring system. This standard applies to the acceptances of the components of the wastewater online monitoring system constructed and installed in accordance with HJ 353 as well as the online monitoring instruments of water pollution sources such as flow meters, automatic water quality samplers, water quality automatic analyzers of chemical oxygen demand (CODCr), water quality automatic analyzers of total organic carbon (TOC), water quality automatic analyzers of ammonia nitrogen (NH3-N), water quality automatic analyzer of total phosphorus (TP), water quality automatic analyzer of total nitrogen (TN), thermometers, pH water quality automatic analyzers, etc. The wastewater online monitoring system specified in this standard is applicable to the online monitoring of chemical oxygen demand (CODCr), ammonia nitrogen (NH3-N), total phosphorus (TP), total nitrogen (TN), pH value, temperature, flow monitoring factors . 2 Normative references This standard refers to the following documents or clauses therein. For undated references, the valid version is applicable to this standard. GB/T 6920 Water quality - Determination of pH value - Glass electrode method GB/T 11893 Water quality - Determination of total phosphorus - Ammonium molybdate spectrophotometric method GB/T 15562.1 Environmental protection graphic sign - Discharge port (source) GB/T 50093 Code for construction and acceptance of automation instrumentation engineering GB/T 50168 Code for construction and acceptance of cable lines for electrical installation engineering HJ 212 Data transmission standard for online monitoring systems of pollutant HJ 353-2019 Technical specification for installation of wastewater on-line monitoring system (CODCr, NH3-N et al.) HJ 355 Technical specification for operation of wastewater on-line monitoring system (CODCr, NH3-N et al.) HJ 535 Water quality - Determination of ammonia nitrogen - Nessler reagent spectrophotometry HJ 536 Water quality - Determination of ammonia nitrogen - Salicylic acid spectrophotometry HJ 636 Water quality - Determination of total nitrogen - Alkaline potassium persulfate digestion UV spectrophotometric method HJ 828 Water quality - Determination of the chemical oxygen demand - Dichromate method HJ/T 70 High-chlorine wastewater - Determination of chemical oxygen demand - Chlorine emendation method 3 Terms and definitions The following terms and definitions apply to this standard. 3.1 Wastewater on-line monitoring system Refers to a system consisting of software and hardware facilities that implement functions such as monitoring the flow of water pollution source flow, collecting water samples from water pollution sources, analyzing water samples from water pollution sources, analyzing data statistics and uploading. 3.2 Data marker Refers to the markers used to represent different test data attributes of wastewater online monitoring instruments. 4 Acceptance conditions and acceptance content 4.1 Acceptance conditions 4.1.1 Provide relevant technical information on the type selection, engineering design, construction, installation and commissioning, performance of the wastewater online monitoring system. 4.1.2 The wastewater online monitoring system has been installed, commissioned and test run in accordance with HJ 353; all indicators meet the requirements of Table 3 in HJ 353-2019; it has submitted commissioning reports and test run reports. 4.1.3 Provide verification certificates for flow meters and standard measurement weirs (grooves). The wastewater online monitoring equipment that meet the technical requirements in Table 1 of HJ 353-2019. 4.1.4 The basic communication network and basic communication protocol used by the wastewater online monitoring system shall comply with the relevant requirements of HJ 212, respond to the various contents of the communication specifications, provide relevant self-inspection reports. At the same time, provide the network certification issued by the competent environmental protection department. 4.1.5 The automatic water sampling unit has been running stably for one month. It can collect instantaneous samples and representative composite samples for the analysis of the wastewater online monitoring instruments. It may retain samples and alarm. 4.1.6 The power supply is uninterrupted during the acceptance process. 4.1.7 The data control unit has been operating stably for one month, sending data to the monitoring center platform in time, during which the equipment operation rate shall be greater than 90%; the data transmission rate shall be greater than 90%. Equipment operation rate and data transmission rate are calculated with reference to formulas (1) and (2). Equipment operation rate = (Actual operating hours / enterprise discharge hours) x 100% ………………….………… (1) Wherein: ultrasonic probes at the installation place of the flowmeter, which can facilitate the maintenance and comparison of the flowmeter. 5.2.3 All open edges of the working platform shall be provided with protective railings. Protective railings and steel platforms shall be provided at the water intakes in the air and high places. The edges of each platform shall be provided with devices to prevent debris from falling into the water intakes. 5.2.4 The installation and construction of the maintenance and sampling platform shall all meet the requirements. 5.2.5 The installation of protective railings shall all meet the requirements. 5.3 Monitoring station building 5.3.1 The monitoring station building has its all rooms dedicated for special purposes. 5.3.2 The monitoring station building is airtight and equipped with heating and cooling air conditioners and exhaust fans. The air conditioner has the automatic running function once power is on. 5.3.3 The area of the newly-built monitoring station building shall not be less than 15 m2; the height of the station shall not be less than 2.8 m. All instruments and equipment shall be placed reasonably, which can facilitate maintenance and repair. 5.3.4 The distance between the monitoring station and the sampling point shall not be greater than 50 m. 5.3.5 The foundation load intensity, area, space height and ground elevation of the monitoring station building meet the requirements. 5.3.6 There are safe and qualified power distribution equipment in the monitoring station building; the power load provided is not less than 5 kW; it is equipped with a regulated power supply. 5.3.7 The power supply lead-in line of the monitoring station uses lighting power; the power supply line has a surge protector; the power supply shall be clearly marked; the ground wire is firm and clearly marked. 5.3.8 The power supply of the monitoring station is provided with a master switch; each instrument is provided with an independent control switch. 5.3.9 There are qualified water supply and drainage facilities in the monitoring station building, which can use tap water to clean the instruments and related devices. records; upload the wastewater monitoring data to the monitoring center platform. 5.5.2 It can receive the commend from the platform of the monitoring center; realize the control of the wastewater online monitoring system. If the automatic water sampling unit is triggered to take sample, the wastewater online monitoring instrument performs measurement, standard solution verification, calibration and other operations. 5.5.3 It is possible to read and display the real-time measurement data of each wastewater online monitoring instrument. 5.5.4 It can query and display: hourly change range and daily change range of pH value, hourly accumulated flow rate and daily accumulated flow rate, hourly average temperature and daily average temperature, hourly value and daily average value of CODCr, NH3-N, TP, TN; meanwhile use the data acquisition and transmission instrument to upload to the platform of monitoring center. 5.5.5 The uploaded pollution source monitoring data is marked with time and data status, which complies with clause 6.2 of HJ 355-2019. 5.5.6 It can generate and display the daily statistics table, monthly statistics table and annual statistics table of the monitoring data of various wastewater online monitoring instruments. 6 Acceptance requirements fo.......Source: https://www.ChineseStandard.net/PDF.aspx/HJ354-2019 |