1. During the acceptance and monitoring, the unorganized particulate matter is only 2-50m downwind of the pollution source, not the plant boundary?

Answer: There are two major parts of particulate matter unorganized monitoring: unorganized at the branch boundary and unorganized workshop.

2. In the process of acceptance and monitoring, when will the factory boundary be unorganized and when will the workshop be unorganized?

Answer: The general acceptance monitoring should be carried out for the characteristic pollutants of the enterprise and the pollutants controlled by the state.

If there are requirements for unorganized emissions in the workshop in the emission standards, they should be monitored during acceptance.

3. When noise acceptance monitoring, does the enterprise that has no operation at night only measure the daytime?

Answer: The acceptance monitoring is carried out under the conditions of working conditions, and there is no working condition without operation at night, so only the daytime is measured.

4. Acceptance monitoring report, whether the total amount of fugitive emissions should be accounted for (relevant content in the EIA)?

Answer: Since it is not possible to actually test the amount of fugitive emissions, the amount of fugitive emissions can only be obtained by the method of model calculation. According to the current situation, only the calculation mode of the total amount of unorganized emissions is given in the technical specifications for the issuance of pollutant discharge permits in the iron and steel industry, and the general provisions of the technical specifications for the application and issuance of pollutant discharge permits for other industries and the "General Provisions for the Application and Issuance of Pollutant Discharge Permits" (HJ942-2018) stipulate that only the allowable concentration limit of unorganized emissions is allowed, and the emission limit is not allowed.

5. Is there a clear number of times, frequencies and days of monitoring for the enterprise to accept and monitor (or entrust a third party)?

Answer: The promulgated technical specifications and technical guidelines for industry acceptance monitoring (pollution impact category) have special chapters that require the lower frequency of monitoring (monitoring days and the number of monitoring times per day).

6. In the acceptance monitoring, if there are sensitive points for environmental protection, should pollutant emissions and ambient air quality be measured at the same time?

Answer: Environmental quality impact monitoring is mainly aimed at the environmentally sensitive protection objectives concerned in the EIA and approval, so it is necessary to monitor at the same time when there is a requirement in the EIA and approval. It is better to do it when the sensitive target is in the downwind direction.

7. During acceptance monitoring, is it feasible for general boilers and dust collectors to select GB16157 to measure the concentration of particulate matter, and the result is reported < 20mg/m3?

Answer: For pollution sources that do not need to convert the monitoring results, when the monitoring results are lower than 20mg/m3, "<20mg/m3" will be reported. For boilers whose emission concentrations need to be converted, the converted concentrations cannot be determined, so "<20mg/m3" cannot be reported.

8. During the acceptance and monitoring of exhaust gas, does the low-concentration particulate matter have to be synchronized with double samples, and whether the blank of the whole program should be deducted?

Answer: Synchronous double sample is a quality control measure, and 7.3.8 in HJ836-2017 stipulates that "when collecting synchronous double samples, each sample should be collected with synchronous double samples, and the collection of synchronous double samples should meet the requirements of Appendix A". The term "per sample" refers to a sample that is a component of valid data (e.g., multiple samples are taken at intervals such as 1 hour), so not all samples must be collected at the same time. Simultaneous concentration calculation and allowable relative deviation of the two samples.

The blanks of the whole program cannot be deducted.

The whole procedure gap is also a quality control measure used to judge and evaluate the validity of the sampling results. 10.3.4 in HJ836-2017 stipulates that "any sample that is less than the blank weight gain of the full program is invalid." The total program blank weight gain divided by the average volume of the corresponding measurement series should not exceed 10% of the emission limit"; 10.3.7 stipulates that "when the concentration of particulate matter is lower than the detection limit of the method, the corresponding blank weight gain of the whole program shall not be higher than 0.5mg, and the weight loss shall not be more than 0.5mg".

9. For particulate matter (before and after the treatment facility), should it be collected for 1 hour in stages, for GB16157?

Answer: GB/T16157-1996 only stipulates that the sampling time of a single point is generally 3 minutes for particulate matter sampling, and the overall sampling time of the filter cartridge is not clearly specified. However, all kinds of exhaust gas evaluation standards indicate that the standard value is the average concentration emission value of 1 hour. Therefore, each valid evaluation value should be collected for 1 hour in stages.

10. The sampling time required in the analysis methods of unorganized waste gas such as Cl2 and NH3 is inconsistent with the hourly average value requirement in the GB16297, which requirement should be collected?

A: The recommended sampling time for a single sample is given in the method standard, which is a recommendation, not a regulation. The sampling time of a specific individual sample is determined based on the emission concentration of the pollutant in the exhaust gas. There is no contradiction with taking 2-4 samples at intervals such as 1 hour in a row or 1 hour in the GB16297.

11. Does the acceptance of the sewage treatment plant require soil monitoring inside and outside the plant boundary? If you need to monitor, how will the points be deployed?

A: Acceptance monitoring does not require monitoring of the soil within the plant boundary. Soil monitoring of the environment outside the plant boundary is carried out in accordance with the requirements of the EIA. The distribution of points shall be in accordance with the Technical Specifications for Soil Environmental Monitoring (HJ/T166-2004) and the distribution requirements of "waste water enterprises" in the national soil risk point monitoring, and in accordance with the direction of wastewater discharge.

12. Does the acceptance of the sewage treatment plant need to monitor the water quality of the sewage body? Do I want to measure the background value of the water body?

Answer: According to the EIA and approval requirements, the impact of the sewage treatment plant drainage on the external environment - the sewage body is monitored. During monitoring, a control section is laid upstream of the inlet of the sewage treatment plant.

13. If there is no national and industry testing standards, should the self-formulated work instructions be reviewed and approved by the quality supervision and management department? (e.g. Cr+6 of soil)?

Answer: The work instruction of a project formulated by itself according to the requirements of the preparation of the work instruction can be used as an effective analysis method for the project of the unit after being reviewed and approved by the metrology certification review team organized by the Quality Supervision Bureau.

14. What is the function of setting a baffle in the flue?

Answer: This situation occurs when the design volume of the fan is too large. The function of the baffle is to increase the resistance to reduce the pumping volume.

15. What should I pay attention to in the acceptance process of the office building, the personnel have not moved in, the property has not been occupied, and there are no garbage cans and waste water? Do they need to prepare the trash can before it can be accepted?

Answer: In this case, there is no working condition and acceptance cannot be carried out. At present, the office building project belongs to the "environmental impact registration form", which does not need to be accepted, and can be directly recorded.

16. A cement plant has 15 exhaust cylinders, of which 7 exhaust cylinder outlets are not standardized, and cannot be sampled due to safety reasons. Now the company does not want to rectify. If the enterprise invites another third-party testing agency to monitor the 7 exhaust cylinders, can the monitoring agency put the monitoring data of the other monitoring agency in the acceptance monitoring report?

Answer: At present, for the enterprise to accept by itself or entrust a third party to complete the acceptance work, the monitoring data of another third testing agency can be put in the report, but it is necessary to specifically indicate in the report which data is measured by itself, which is the monitoring data of another unit provided by the enterprise, and require the enterprise to provide a stamped data report as an attachment to the report.

17. During the acceptance and monitoring, the oxygen content of the discharge port of the boiler burning biomass is about 17-18%, and the measured concentration is not high, but the converted concentration is very high. How can this be improved (with bag cleaning facilities) to reduce O2?

Answer: first check whether there is damage and air leakage in the pipeline and treatment facilities before the monitoring section of the system, if there is no obvious air leakage, the high oxygen content should belong to the production load does not meet the design requirements, and the boiler induced draft fan and blower can not be adjusted according to the actual needs of the air distribution. The oxygen content can only be reduced by increasing the production load and reducing the distribution air volume.

18. If the three points are distributed according to the upwind direction and downwind direction, as the enterprises are now in the industrial park, sometimes the reference point of the upwind direction is close to the transportation hub point, so the TSP upwind direction data > downwind direction data can be distributed according to the surrounding area of the plant boundary (east, south, west and north)?

Answer: The layout of the monitoring points of fugitive emission of waste gas at the plant boundary should be carried out in accordance with the requirements for the monitoring of fugitive emissions at the plant boundary in accordance with the technical guidelines for the monitoring of fugitive emissions of air pollutants (HJ/T 55-2000), Appendix C of the comprehensive emission standard for air pollutants (GB 16297-1996) and the emission standards of various industries. It cannot be distributed around the factory boundary at the same time.

The layout of control points should avoid local pollution sources.

19. How far away is the groundwater monitoring well from the pollution source? How deep is it appropriate? The water table in the south is high and it is easy to get water.

Answer: In accordance with the requirements of HJ/T164-2004 "Technical Specifications for Groundwater Environmental Monitoring", "2.3 Monitoring Points (Monitoring Wells) Setting Method".

20. At this stage, many acceptance projects do not have pollutant discharge permits, and most people (including the environmental protection authorities) still have a pollutant discharge permit after acceptance. How to solve this situation.

Answer: According to the "General Provisions of Technical Specifications for the Application and Issuance of Pollutant Discharge Permits"

(HJ942-2018, implemented on February 8, 2018), taking exhaust gas as an example.

5. The method of determining the corresponding discharge port and the permitted emission limit of the product link

5.1 The product link corresponds to the discharge port

… Geographical coordinates of the discharge port, the height of the exhaust cylinder, the internal passage of the outlet, the national and local pollutant emission concentrations and the commitment to stricter emission limits...

5.2.1 General principles

21. What are the requirements for working conditions during the monitoring of pollutant discharge permits?

Answer: According to the "Regulations on the Management of Environmental Protection of Construction Projects" (revised in 2017), the "Interim Measures for the Environmental Protection Acceptance of Construction Projects" (National Environmental Assessment [2017] No. 4) and the "General Provisions of Technical Specifications for the Application and Issuance of Pollutant Discharge Permits" (HJ942-2018, implemented on February 8, 2018), new projects can only be commissioned after obtaining a pollutant discharge permit, and various monitoring activities can be carried out during the commissioning period. Therefore, the amount of pollutant discharge permits for new projects should be calculated according to the corresponding technical specifications for the application and issuance of pollutant discharge permits for the industry or the general provisions of the technical specifications for the application and issuance of pollutant discharge permits (HJ942-2018, implemented on February 8, 2018).

The monitoring of the actual emission accounting is carried out according to the actual situation without working condition requirements.

22. When monitoring unorganized waste gas, there is no obvious wind direction in the local area, or the wind direction changes during the monitoring period, how to deal with it?

Answer: When there is no organization monitoring, it is suitable for monitoring when the wind speed is low, but there is no obvious wind direction or the wind direction changes more than 45°, which is not suitable for the unorganized monitoring of the plant boundary. Appropriate weather conditions should be selected.

23. What is the implementation standard of heat conduction oil furnace? And what information and precautions need to be known?

Answer: The scope of application of the "Boiler Air Pollutant Emission Standard" (GB13271-2014) clearly stipulates that the standard is applicable to hot water boilers and organic heat carrier boilers of various capacities. Among them, the heat carrier boiler is commonly known as the "heat conduction oil furnace". Therefore, if the evaluation standards are not specified in the EIA and approval, the emission standards of the corresponding fuel in the "Boiler Air Pollutant Emission Standards" will be implemented.

24. How to judge the effectiveness of monitoring by measuring the amount of organized exhaust gas for 3 times? (For air volume?) ）

Answer: The acquisition of effective data is achieved in strict accordance with the requirements of the monitoring specifications, from the quality control of the whole process and each link of the working conditions, distribution, sampling, analysis, data calculation, and so on. The parallelism of the data proves that the working conditions of the monitoring process are stable and there are no accidental errors. When the data fluctuates greatly, it should be checked item by item, especially the changes in working conditions and the changes in the parameters in the sampling records, to judge whether there are any wrong operations.

The data reviewer can judge the reasonableness of the data based on the process characteristics of the pollution source, the air volume of the fan setting, and the work experience.

25. During acceptance, the noise at the boundary of the plant exceeds the standard, and the sensitive points meet the standard, how to deal with it?

Answer: Noise acceptance is still an approval system. The noise at the boundary of the plant exceeds the standard and the sensitive points meet the standard, which is a situation that exceeds the standard but has not yet disturbed the people. It is necessary to carry out targeted noise source monitoring, and if the noise at the plant boundary is caused by the noise of the sound source exceeding the standard, the treatment requirements should be put forward and the acceptance should not be accepted.

26. In the acceptance site investigation stage, if it is found that the pollution source is not mentioned in the EIA, should it be accepted?

A: It depends on whether the pollution source involves a major change in the project, and if it is a new pollution source added due to the change content or process, it involves the re-preparation and approval of the EIA. If it is only a post processing facility added on the basis of the original process, it should be accepted.

27. If the emission concentration reaches the standard and the total amount of emissions exceeds the standard, how should it be dealt with in the acceptance?

Answer: The total amount is not up to standard and cannot be accepted.

In the EIA report, there is a summary table of pollutant emissions, in which you can see that the sum of the emissions of individual pollution sources is consistent with the total amount. Therefore, one by one, the amount predicted by the EIA is checked to see which pollution source exceeds the prediction, and the treatment facilities are renovated in a targeted manner.

28. Acceptance, the plant boundary is adjacent, does the noise need to be monitored?

A: In principle, there is no need to take a test.

29. How to accurately measure formaldehyde in high-temperature flue gas? For fiberboard enterprises, the production process involves a cooking fluke temperature of 56 °C, a moisture content of 10.2%, and environmental protection facilities for cyclone dust removal and water curtains. During the monitoring process, water vapor can be seen to be inhaled into the absorbent solution.

Answer: Formaldehyde is easily soluble in water, according to GB/T16157, the sampling tube needs to be heated during the sampling process to prevent the condensate from producing adsorbed formaldehyde gas.

30. Boiler flue gas monitoring, the oxygen content (gas) of the boiler can reach 10% in the actual measurement process, how to troubleshoot the problem? In addition, the test CO of the gas boiler is more than 1000 mg/m3, SO2 is 1500 mg/m3, and O2 is 8.3%. Is the abnormal SO2 value due to CO interference? Or are there other exhaust gases coming in? (The plant produces sulphur hexafluoride gas, which cannot be inspected because the pipelines are all underground).

Answer: The high oxygen content of the gas boiler is caused by the gas distribution, and the oxygen content of 10% is within the acceptable range and does not need to be investigated.

The sulfur dioxide of the gas boiler is 1500 mg/m3, and the CO2 is more than 1000 mg/m3, and the possibility of CO positive interference is very high. Other methods of testing, such as infrared, ultraviolet, or FTIR, should be used to determine whether the monitoring result is the result of CO interference or process exhaust gas mixing.

31. How to deal with the change of facilities for treating process waste gas? For example, in a steel anti-corrosion processing plant, the EIA and approval require that the exhaust gas is adsorbed by activated carbon and discharged by a 15-meter exhaust cylinder. The actual construction situation was changed to photooxidation catalysis for treatment, and no exhaust cylinder was set up after treatment, and there was no organized scattered discharge. How to deal with this situation acceptance? Is it not possible to have unorganized exhaust gas on one side? Or do you have to set up an exhaust cylinder to measure organized exhaust gases? In the case of organized exhaust emissions, in addition to the side organized exhaust gas, is it necessary to measure the unorganized exhaust gas?

Answer: The general principle of judging whether a change in a treatment process is feasible is to see whether its pollutant emissions are improving. The photooxidation catalytic method is a well-recognized method to replace the exhaust gas of the activated carbon treatment process, and it is feasible in the process. However, it is not allowed to set up a 15-meter-high exhaust pipe in accordance with the requirements of the EIA and approval, and it is not allowed to discharge unorganized, which is a bad performance.

Test organized emissions for exhaust cylinders, and test unorganized exhaust emissions for unorganized fugitive emissions in workshops and plant boundaries that are required to be tested by EIA and approval.

32. At present, the post-project evaluation is gradually carried out, and how to accept the post-evaluation? What is the difference between new construction, renovation and expansion projects?

Answer: Post-project evaluation refers to the systematic and objective analysis and summary of the implementation effect, implementation process and external environment impact of the project after it has been completed and operated for a period of time. The purpose and role of the post-assessment and the EIA are different, and acceptance is not required.

33. Is it necessary to measure the dust on the top of the mixing salon of the commercial mixing plant project? How to deal with the actual situation.

A: Facilities that produce dust should be monitored for particulate matter. In the actual monitoring, a temporary monitoring platform can be built or a hoisting facility can be used as a temporary platform for monitoring.

34. The total amount of EIA and approval is particularly low, may be several orders of magnitude lower, such as 0.000433t/a, how to treat the situation that the total amount cannot meet the standard in the acceptance process?

Answer: This is a problem of total approval, which should be resolved by the construction unit and the total amount approval department.

35. After the brick factory currently implements the new standard, the particulate matter is 30mg/m3, it is too difficult to meet the standard, refer to the standard implemented by the EIA and the approval at that time, and meet the standard.

Answer: The "Emission Standards for Air Pollutants in the Brick and Tile Industry" (GB29620-2013) gives the time limit (2 and a half years) for existing enterprises to continue to implement the old standard limits (Table 1), during which enterprises should actively rectify and adopt advanced treatment facilities to make pollutant emissions meet the stricter limit requirements in Table 2.

Acceptance monitoring shall be carried out in strict accordance with the time limit of the standard, and if the standard is not met, the treatment facility shall be transformed.

36. What are the key points for the preparation of independent acceptance opinions of enterprises?

Answer: The main point of the acceptance opinion is the acceptance conclusion.

Check each of the following nine items one by one, and list the specific nonconforming items. 1) Environmental protection facilities are not fully implemented as required; 2) The pollutant emission monitoring results exceed the standard; 3) Failure to perform relevant environmental protection procedures in the event of major changes; 4) The major environmental pollution caused by the construction process is not completely controlled; 5) Construction projects that are included in the management of pollutant discharge permits, discharge pollutants without a permit or do not discharge pollutants according to the permit; 6) Phased construction and operation, and the ability of environmental protection facilities to prevent pollution and ecological damage cannot meet the needs; 7) Those who have been punished for violating the law and have been ordered to make corrections, but have not yet completed it; 8) There are major quality defects in the acceptance report; 9) Other environmental protection laws, regulations, rules, and other provisions shall not pass environmental protection acceptance. If it is unqualified, the problems existing in the project should be clarified, and the follow-up rectification items with specific content, clear requirements, technical feasibility and strong operability should be put forward.

37. Is it necessary to re-submit for approval for partial changes in the production process? How do you clearly determine that a part of the change is a material change?

Answer: According to the list of major changes listed by the state and the province, it is judged by comparison. If it is in the list, it must be re-submitted for approval.

38. The brick factory project involves mining, whether the mining needs to be done separately before it can be accepted, and the approval requires the formulation of the "Mine Environmental Governance and Ecological Restoration Plan", whether it can be formulated to be accepted, and also requires ecological restoration, does I need to describe the ecological restoration in the acceptance report?

Answer: If the construction content of the machine brick plant project includes the mining part, there is no need to do a separate EIA. The "Mine Environmental Governance and Ecological Restoration Plan" formulated by the approval requirements is the basis for mine environmental governance and ecological restoration, and must be prepared as required. In the acceptance report, the completion of the requirements for the program is truthfully described according to the inspection results.

39. In view of the treatment efficiency, especially the exhaust cylinder, many treatment facilities have no exhaust pipe before and cannot be opened.

A: The "Technical Guidelines" stipulate that for those who do not have the conditions for monitoring the efficiency of the treatment (due to safety and the facilities themselves, etc.), it is sufficient to explain the reasons in the report. The principle of "three under six" is a better requirement when monitoring the section selection, and when the actual situation cannot meet the requirements, the method of encrypted distribution can be used for sampling.

40. Can the enterprise accept the failure to make an emergency plan (not recorded)?

Answer: It is a major defect and cannot be accepted.

41. How to deal with the concentration of the reference point of unorganized waste gas greater than the monitoring point?

A: Choose the right meteorological conditions to avoid the upwind direction from being affected by local pollution sources and re-monitor.

42. The GB/T16157 standard is used for low-concentration particulate matter, and the measured concentration is less than 20mg/m3, so how to convert the emission concentration? How is the emission rate calculated?

A: It is not possible to determine the exact measured concentration, so it is not possible to calculate the conversion and emission rate. (Personally, it is recommended to use 20mg/m3 for conversion, and the converted concentration is recorded as the value after less than 20 * conversion factor, if the value is lower than the emission limit, it is evaluated as meeting the standard, and if it is higher than the emission limit, it cannot be used for evaluation.) ）

43. How to determine the monitoring plan of the technical transformation project? Pollution sources that do not involve technological transformation are unpredictable?

Answer: Determine the scope and content of monitoring according to the content of technical transformation. Pollution sources that do not involve technological transformation are not monitored.

44. During the acceptance monitoring, is there no requirement for more than 75% of the working conditions to be truthfully recorded?

A: Not necessarily. If there are technical specifications for industry acceptance, the acceptance shall be carried out according to the working conditions and loads required by the specifications; If there is no technical specification for industry acceptance, the acceptance shall be carried out according to the technical guidelines for pollution impact, and there is no load requirement for working conditions.

45. "Total emissions = flue gas flow ×measured concentration" or "Total emissions = standard dry flow ×measured concentration"?

A: Neither. Total emissions generally refer to monthly or annual emissions. You're asking about the formula for calculating the emission rate.

Emission rate = standard dry flow rate × measured concentration.

46. Is a housing development project "ecological" or "polluting"?

Answer: General real estate development belongs to the EIA registration project, which does not need to be accepted, only for the record.

47. GB16297-1996 mentions that "the exhaust cylinder of the new pollution source shall generally not be less than 15 meters, and if the exhaust cylinder of the new pollution source must be lower than 15 meters, the emission rate standard shall be strictly implemented by 50% according to the original calculation result", is that applicable to oil smoke?

Answer: The monitoring of cooking fume in the catering industry is based on the relevant requirements in the "Emission Standards for Cooking Fume" (GB18483-2001), of which 5.3 stipulates that "the specific provisions on the height and location of the fume exhaust cylinder shall be formulated by the provincial environmental protection department". It is not necessary to strictly enforce the standard limits if the height requirements are not reached. Failure to meet the height requirements of the exhaust cylinder shall be regarded as failure to complete the construction of environmental protection facilities as required, and belong to the scope of unqualified acceptance.

48. The bearing processing plant, the EIA and the approval are the production of "precision" bearing accessories, and the company said that the "cutting fluid" was not used. Is it reasonable to produce precision bearings without cutting fluid?

Answer: The bearing material is a high mechanical strength, high wear-resistant material, and the cutting fluid of the whole assembly line in the processing process is not stopped to reduce thermal deformation and ensure the accuracy of the product. Therefore, the company's claim that the cutting fluid was not used is false. The waste cutting fluid has a high content of heavy metals and is a hazardous waste.

49. How is the construction period reflected in the preparation of the environmental protection acceptance report?

Answer: According to the environmental protection requirements for the construction period in the EIA, check whether there are corresponding environmental protection requirements in the construction contract; Check the relevant environmental protection content in the construction environmental supervision, and answer the completion status one by one.

50. How to deal with the total discharge outlet of the enterprise in the park that can only measure the total discharge outlet of the park?

Answer: There are two scenarios:

Situation 1: The enterprise sewage is discharged into the sewage treatment facilities of the park after pretreatment.

Situation 2: The enterprise treats the sewage by itself and discharges it into the environment through the general discharge port of the park.

In both cases, the enterprise will have its own sampling port before the inflow, and the first situation is to understand whether its water quality can meet the requirements of the water quality of the water treatment facilities in the park; Situation 2 is the maintenance of the drainage network and the understanding of the company's own drainage situation.

In both cases, the drainage network is generally underground, observed and sampled through manholes.

51. What problems need to be paid attention to in environmental protection acceptance and monitoring projects?

Answer: For the big topic, look at the content of the handouts for the preparation of the acceptance monitoring report of the pollution impact category.

52. What information needs to be collected in the investigation process of the environmental protection acceptance investigation report?

Answer: Big question. Look at the handouts for the preparation of the ecological impact acceptance investigation report.

53. At present, the implementation of independent acceptance of enterprises, and the acceptance of some changes can be accepted together with "evaluation by inspection", and what are the circumstances under which "evaluation by inspection" can be obtained? What is the degree of our grasp?

Answer: According to the list of major changes in the country and provinces, those that are not major changes can be evaluated by inspection.

54. After filling in the pollutant emission indicators in the "three simultaneities" registration form, do you only fill in the indicators under the total amount control indicators?

Answer: The pollutant indicators in the "three simultaneous" registration form should not only fill in the total amount control index, but also consider the emission indicators in the pollutant discharge permit.