Necessity of installing gas detector in sewage treatment plant
It is necessary to install gas detectors in sewage treatment plants. In recent years, the rapid development of the national economy and the significant improvement of people's living standards have stimulated the demand for sewage treatment, and the number of sewage treatment plants is also increasing.
Sewage treatment plants mainly deal with domestic wastewater and industrial wastewater. During a series of processing processes, various toxic gases will be produced, which will not only cause great harm to the health of factory workers, but also harm the health of surrounding residents. It will bring adverse effects, so it is very necessary to install a gas detector in the factory area.
In the inlet pipelines of many sewage treatment plants, various clear water tanks, concentration tanks, underground sewage, sludge gate wells and non-flowing sewage tanks may produce toxic and harmful gases. Moreover, the gases produced are of various types and complex compositions. According to the different ways of harm, these gases can be divided into two categories: toxic gases and flammable and explosive gases.
1. Toxic gas
The toxic gases produced by sewage treatment plants include methane, hydrogen sulfide, carbon monoxide and carbon dioxide, hydrogen cyanide, etc. These gases come from various sources, such as sewage tanks, pumping stations, aeration tanks, sludge digesters, deodorization workshops and treatment workshop. Among them, hydrogen sulfide is an acute and highly toxic. It has a special odor at a low concentration (0.0047ppm) and is easy to distinguish; but when the concentration exceeds 150ppm, the human olfactory nerve will be damaged and cannot smell its odor. , so as to cover up its real existence. Even if the hydrogen sulfide reaches a lethal concentration of 800pm, the workers cannot smell its odor, which is very likely to cause fatal danger.
2. Flammable and explosive gases
During sewage treatment, aeration and sludge digestion are usually high-risk areas for biogas production. Since the main component of biogas is methane, it is not only dangerous to explode, but also reduces the concentration of oxygen, resulting in suffocation. explode.
Through the above analysis, it can be seen that the sewage treatment plant must install and use toxic and harmful gas detection alarms in accordance with national regulations. The gas alarm will monitor in real time for 24 hours. Once the gas concentration exceeds the standard, it will immediately alarm and display. At the same time, the Safety Supervision Bureau also requires that sewage treatment plants must be equipped with safety protective equipment in accordance with the regulations of the Safety Supervision Bureau, such as gas masks, air respirators, protective clothing, portable gas detectors, labor insurance safety shoes, protective gloves and other safety protective equipment to ensure operation. Safety of personnel in the process of work.
According to the different types of gas generated by the sewage treatment plant, gas detectors with different functions need to be installed. Gas detectors are divided into fixed and portable, and the sewage treatment plant can use a combination of portable and fixed gas detectors during the installation process. According to some toxic gases and flammable and explosive gases commonly produced by sewage treatment plants, corresponding gas detectors are installed in a targeted manner, such as methane gas detectors, carbon monoxide gas detection alarms, carbon dioxide gas detection alarms, etc.
The toxic and harmful gases produced by the sewage treatment plant pose a certain threat to the staff and surrounding residents. Therefore, the sewage treatment plant must pay attention to the installation and use of gas detectors, add a safety protection for the production of the enterprise, and prevent the occurrence of dangerous accidents. .
