Northstar Environmental Protection News: Guide: At the time, in the environmental monitoring mall, we saw that the emission specifications were being tightened, the enterprises still completed qualified emissions, monitoring data fraud continued to emerge, and the credibility of the testing data was lost. In the opinion of Xue Huixi, the founder of Huansi Technology, the phenomenon exposes the lack of skill specifications and industry specifications, the blind construction of large-scale planning projects, the disconnection between monitoring and handling, and the need for innovation in industry concepts. In the future, we should promote the formulation of skill specifications within the scope on the basis of full practice; According to the actual situation of various places, we should make full use of pilot projects and gradually explore the experimental deployment of small planning; The ultra-low CEMS system strengthens the ability of data analysis, and uses skills to break through the fault from monitoring to handling at that time; We should attach importance to the innovation of skills in cross categories, deeply explore the value of new skills, and deal with the problems that were difficult to be solved by traditional environmental monitoring methods at that time.

Environmental monitoring is an important part of environmental protection and a direct reference data for environmental pollution assessment. In addition, environmental monitoring data is also an important data support for the theoretical research of environmental protection and the formulation of environmental protection policies and regulations. More directly, the ranking of air quality faced by major cities is related to the accountability and punishment of environmental protection related departments. For pollution discharge enterprises, the monitoring data cannot be overspent or dare not overspend. Therefore, we have seen that the emission standards are being tightened, enterprises still complete qualified emissions, monitoring data fraud continues to emerge, and the credibility of the detection data is lost!

What is the problem?

1 Is the monitoring data reliable?

The monitoring results are almost the only audit indicators for environmental protection. A test statement can determine whether the enterprise can continue to produce. It can not afford to do so, which leads to abnormal development.

In 2018, serious online environmental monitoring data fraud was successively reported in Shanxi, Hebei and other places, which had a bad social impact and also revealed the problems in the environmental monitoring category for many years.

Early online monitoring data fraud is relatively simple, such as directly sampling outside the sampling port, directly connecting the waste water sampling head to the water pipe, and setting fresh air inlet for dilution emission;

The medium term data fraud is reflected in the setting of monitoring upper limit;

Recently, the monitoring data fraud skill content is higher. It is modified from the operating principle of the monitoring equipment. The VOCs online monitoring system tampers with the operating parameters of the equipment, automatically removes the overspending data, writes and uploads the simulated data, etc. Even experienced monitoring engineers can hardly find data fraud in a short time.

In addition, low-quality instruments interfere with shopping malls, and online detection instruments are classified as precision instruments with high scientific and technological content. However, there are many instrument manufacturers in shopping malls, mostly by assembly and OEM. Due to the lack of corresponding professional skills, knowledge and practical experience, the selected online monitoring instruments do not respond to characteristic pollutants from time to time. At present, online monitoring is basically independent inspection, and the joint laboratory issues qualified inspection and monitoring statements together. Through inspection, it can only prove that the enterprise has installed online equipment, and how significant the monitoring data is, as long as the instrument supplier knows.

The falsification of laboratory testing data is a black hole. Laboratory testing consists of on-site sampling and laboratory analysis. Where to sample? Is the sampling method accurate? Is the analysis accurate? It all depends on personal accomplishment and self-discipline. I once saw a test statement, and the laboratory also issued a test statement with a CMA seal for pollutants that are not within the scope of its CMA testing ability. There are also test statements that do not indicate the working conditions, and the elements of the test statements are incomplete. What about data analysis? Recently, Shandong, Jiangsu, Henan and other places have announced a number of testing companies with problems, which also reflects the disorder of our monitoring malls in the past few years. In addition, the testing service is generally entrusted by the pollutant discharge unit. It is often said by peers that if the testing results are unqualified, the owner will not pay. In order to retain customers and keep their jobs, they will try to make the data qualified.

Whether the enterprise's emissions are qualified depends on the enterprise's handling level and the operation role of handling facilities, which is ultimately reflected in the monitoring data. However, compared with the handling investment of hundreds of thousands, millions of dollars or even tens of millions, the cost of handling monitoring data is very small. Before the huge economic benefits, the sewage enterprises, handling companies and testing companies will work together to achieve success.

Since the enterprises have qualified their emissions, but the air quality has not improved significantly, and the phenomenon that haze is still driven by the wind has not changed, so the state and local governments are constantly tightening emission standards. According to foreign emission requirements, China's emission standards for pollutants such as sulfur dioxide, nitrogen oxides and volatile organic compounds are fundamentally close to or even more stringent than those of Europe and the United States.

The local emission standards are far lower than the national emission standards, and the ultra-low emissions implemented in some regions and cities are more stringent.

Are our monitoring data reliable? Is there any suspicion of misleading the formulation of policies and norms?

2 Is the monitoring in place?

(1) Is the inspection comprehensive?

Because some environmental protection personnel lack the understanding of production process and production process, they are not clear about the emission characteristics. Once, an enterprise had to regularly discharge waste gas due to the limitations of reactor process conditions. Three discharge outlet pipes were installed on the top of the fifth floor to directly discharge into the atmosphere, once or twice a day, half an hour each time. I heard that the enterprise has also been producing normally for several years, and these outlets were not included in the supervision, It produces tens of tons of waste gas every year. The emission of the monitored exhaust funnel is only one or two tons.

Typical cases of small vents contributing to large emissions (pictures from the network)

(2) Monitoring and accounting of emissions without arrangements?

Unscheduled emissions are becoming more and more chaotic, with the characteristics of irregular and difficult to quantify. A private pharmaceutical factory uses up to 300 tons of acetone annually. The waste gas is treated with activated carbon. The filling volume is less than 200kg. There is no replacement record in recent two years. The annual inspection statement is qualified. However, the waste gas on site is not collected at all, and most of the waste gas is discharged in an unscheduled manner. The output value of the factory is short of ten million yuan, with 50 employees, but its emissions are far greater than those of surrounding large enterprises.

Many large enterprises are really innocent, with good management and small emissions, but they are regarded as the key targets of environmental protection promotion and transformation. On the contrary, some small enterprises with poor production conditions have become blind areas for monitoring.

At present, some developed cities begin to use SOF, DIAL and other skills to carry out regional unscheduled emission monitoring, but generally speaking, the development is slow, and there is still a long way to go in large-scale nationwide.

3 Is monitoring and handling organically combined?

Three power generating units of a thermal power plant have successively passed two rounds of upgrading and transformation. A total of more than 70 million desulfurization, de marketing and dust removal facilities have been invested, and the ultra-low emission targets of dust 5mg/m3, sulfur dioxide 10 mg/m3, and nitrogen oxides 30 mg/m3 have been achieved, becoming a demonstration project for upgrading and transformation of thermal power. But in the coal storage yard and the coal unloading area, a passing diesel truck raises the dust that blocks the sky (the words are a little exaggerated). How much does the dust contribute here? Is it necessary to monitor and analyze, and give priority to those pollution sources that are easy to handle and have significant emission reduction effect?

4 Monitoring and process control?

We have been focusing on the source control and process control, but when it comes to the specific implementation of the pollutant discharge unit, there are many difficulties. For example, the leakage detection and correction skill (LDAR) for volatile organic compounds (VOCs) emissions from petrochemical enterprises is a very good process control skill, which has been successfully implemented in Europe and the United States for nearly 30 years, but less than 5 years after it was passed in China, it has ultimately become the task of writing test statements, or even fabricating test statements. I have seen an LDAR inspection statement. One instrument works eight hours a day to inspect four or five thousand points (the inspection speed in Europe is 300 to 500 points a day for one instrument). Can such inspection speed guarantee the inspection quality? So that some environmental protection departments do not believe in process control, but let the sewage enterprises have several sets of large-scale environmental protection facilities to strengthen their minds.

5 Summary

The monitoring data is the basic data for formulating our policies, regulations and specifications. Only accurate data can help our country formulate scientific and objective environmental protection policies and specifications.

To prevent excessive commercialization of the monitoring process, relevant environmental protection departments should strengthen the monitoring function, and important monitoring points and characteristic pollutants should be monitored by the environmental protection department to ensure accurate data.

Strengthen the supervision of online monitoring equipment suppliers, testing laboratories and third-party operation and maintenance companies, give full play to the strength of social arrangements, protect the order of monitoring malls, and prevent bad money from driving out good money.

Establish a list of regional pollution sources, improve the quality of monitoring, find out the base number of pollution emissions of enterprises or regions, organically combine monitoring and handling, and use information technology and big data to manage pollution scientifically and accurately to improve environmental quality.

Strengthen the main responsibilities of pollutant discharge enterprises, prevent formalism from going through the motions, and stimulate the source power of enterprises' self transformation and self-improvement.

Because of the lack of effective supervision over monitoring malls for a long time, the credibility of monitoring data has been lost. How to make monitoring data better serve enterprises and the government is an urgent problem. Otherwise, the monitoring costs of tens of millions or even hundreds of millions in each city will be a huge waste. If the detection data is inaccurate, the loss caused by the decision plan fault will be incalculable. Who can make the monitoring data useful, that is, who can live in the quagmire of this industry and become a phoenix.