China Education Equipment Procurement Network News: According to Heilongjiang media reports, the Harbin Pharmaceutical Factory recently issued a total fine of 1.23 million yuan for the "Administrative Punishment Decision" issued by the Harbin Environmental Protection Bureau.
According to the announcement, the Department of Environmental Protection of Heilongjiang Province requested the company to immediately rectify the 7-ACA energy-saving renovation project of the Harbin Pharmaceutical General Factory and put it into use, and impose a fine of RMB 1.05 million on violations. The Harbin Environmental Protection Bureau imposed a fine of 180,000 yuan for cases where the exhaust gas emission of the Harbin Pharmaceutical General Factory exceeded the standard, the storage place of the hazardous waste in the preparation plant was not set, and the garbage was burned without authorization. A total fine of 1.23 million yuan.
The data shows that the waste gas treatment equipment is mainly an environmentally friendly equipment that uses different process technologies to recover or remove harmful components that reduce exhaust emissions to protect the environment and purify the air. Exhaust gas treatment equipment is mainly divided into the following types:
1. Absorption equipment: The absorption method uses low-volatility or non-volatility solvents to absorb VOCs, and then uses VOCs and absorbents to separate the physical properties. This process is suitable for gas purification with higher VOCs concentration and lower temperature. In other cases, corresponding process adjustments are required.
2. Adsorption equipment: When treating the fluid mixture with porous solid materials, a certain component or some components in the fluid can be absorbed on the surface and concentrated on it. This phenomenon is called adsorption. When adsorbing and treating exhaust gas, the adsorbed objects are gaseous pollutants and gas-solid adsorption. The adsorbed gas component is called adsorbate, and the porous solid substance is called adsorbent.
3. Combustion of organic waste gas and catalytic purification equipment: the combustion method is very effective for treating high-concentration Voc and odorous compounds. The principle is to use excessive air to burn these impurities, most of which generate carbon dioxide and water vapor, which can be discharged to In the atmosphere. However, when dealing with organic compounds containing chlorine and sulfur, HCl or SO2 in the combustion products will require further treatment of the gas after combustion.
4. Low-temperature plasma treatment equipment for industrial organic waste gas: According to the state, temperature and ion density, plasma can generally be divided into high-temperature plasma and low-temperature plasma (bun body and cold plasma). The current research on the action mechanism of low-temperature plasma is considered to be the result of inelastic collision of particles. Various types of chemical reactions may occur in a non-equilibrium plasma, mainly determined by the average energy of electrons, electron density, gas temperature, concentration of harmful gas molecules and gas composition, and the volatility of low concentration, high flow rate and large air volume Treat organic pollutants and sulfur-containing pollutants.
The common method of generating plasma is gas discharge. According to the mechanism of discharge generation, the source pressure of the gas and the geometry of the electrode, the gas discharge plasma is mainly divided into the following forms: ①glow discharge; ③ dielectric barrier discharge ; ④ radio frequency discharge; ⑤ microwave discharge. No matter what kind of plasma is generated, high voltage discharge is required. It is easy to catch fire and cause danger. Due to the treatment of gaseous pollutants, it is generally required to be carried out under normal pressure.
5. Photocatalysis and biological purification equipment: Photocatalysis is a deep reaction technology at room temperature. Photocatalytic oxidation can completely oxidize organic pollutants in water, air and soil into non-toxic and harmless products at room temperature, while traditional high-temperature incineration technology requires extremely high temperatures to destroy pollutants, that is, use Conventional catalytic and oxidation methods also require several hundred Baidu's high temperature.
In theory, as long as the light energy absorbed by the semiconductor is not less than its band gap energy, it is enough to excite the generation of electrons and holes, and the semiconductor may be used as a photocatalyst. Common single compound photocatalysts are mostly metal oxides or sulfides, such as Ti0. , Zn0, ZnS, CdS and PbS etc. Each of these catalysts has outstanding advantages for specific reactions, and can be selected according to needs in specific research. For example, the CdS semiconductor has a small band gap energy, which has a good matching performance with the near ultraviolet light in the solar spectrum, and can make good use of natural light energy. , But it is prone to photocorrosion and has a limited service life. Relatively speaking, Ti02 has better comprehensive performance and is the most widely used and studied single compound photocatalyst. The industry representative unit of the biological purification equipment is Shanghai Anjule Environmental Protection Technology Co., Ltd., which has successfully established the 2008 Beijing Olympic Games rowing paint exhaust gas treatment and established the undoubted leader in the industry.
The testing organization in North China can issue authoritative testing data of various gases and report to Tianjin SGS Environment Department. It is understood that SGS Environmental Laboratory was established in 2004 and passed the National Laboratory Accreditation (CNAL) and Metrology Certification (CMA) in April 2005, making it the first and only domestic company A foreign or joint venture third-party comprehensive environmental testing laboratory that has passed these two authoritative accreditation certifications. SGS is a 128-year-old third-party testing, inspection and certification service organization headquartered in Geneva, Switzerland. Its consistent tenet is objective, independent and impartial. Under the guidance of China's energy saving and emission reduction policies and the needs of customers, the analysis of soil and water pollutants was carried out: ambient air and exhaust gas analysis (dioxin detection); occupational health testing; clean room pollution analysis and classification testing.
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