Luo Yan Road Yan Tsui in front of a row of green roof bungalows, not yet approached, you can hear the sound of electric saws sawing wood, as well as pungent smell hit. He came to the courtyard surrounded by bungalows, and a pile of wood materials came into view. There is also a pond in the yard, with foam, paint buckets, wood and other waste floating in the four corners of the pond, as well as a layer of white oil.
Mr. Man's house was nearly a hundred meters away from the pond. He was also suffering from noise and odor. He also said that the grandson was only 1 year old and smelled of paint all day long.
Ms. Wang lives by the road in the reservoir, and she has been troubled by dust and pungent smell of paint for almost two years. "Every summer is particularly uncomfortable, the weather is hot, and I want to open the window, but the smell of paint floats in and makes me dizzy."
Reflect the situation to the East Lake Ecotourism Scenic Division of Wuhan Municipal Environmental Protection Bureau, and the environmental inspectors of the bureau quickly rushed to the scene to check.
Follow the environmental inspector into a workshop. A worker is spray painting the molded chair, the mist is filled in the air, and the vision becomes blurred instantly. This plant is near the water pond, and two exhaust fans on the wall are screaming, pumping out the diffuse mist in the room. Seeing the arrival of law enforcement officers, painter Xiao Li quickly turned off the fan power.
Xiao Li wore a mask and her hair was covered with dust. Looking out from the gap between the fan blades, white powdery objects have piled up from the bottom of the pond. The owner of the furniture factory, Li Mou, who arrived at the news, took over the "rectification notice" from the environmental supervisors. According to environmental supervisors, according to the regulations of the East Lake Ecotourism Scenic Spot, Limou ’s factory can only be moved away from the enterprises that refuse to pollute the environment.
Afterwards, he inspected the remaining ten small workshops with environmental supervisors and found that, like Li's furniture factory, neither had been approved by the environmental protection department nor took any environmental protection measures and requested immediate shutdown.
Mr. Li introduced that this furniture factory took over after the Spring Festival this year. There are 10 workers, and they can produce 20,000 benches every year. "Doing furniture pollutes the East Lake environment, and I will consider changing my career."
Yesterday, these small workshops have promised to the joint law enforcement agencies to move out of the scenic area before the end of this month.
Rotary evaporator rotovap machine is for evaporation and crystallization under vacuum pressure
Chemistry rotary evaporator concentrator or evaporator crystallizer with different material such as high borosilicate glass rotary evaporator and stainless steel evaporators and always used for lab chemical chemistry use or beverages, sample pharmaceutical engineering
Laboratory instruments rotary evaporators are mainly used for continuous distillation of large quantities of volatile solvents under reduced pressure. In particular, the reaction products can be separated and purified by the concentration of extraction solution and the distillation of the receiving solution during chromatographic separation. The basic principle of a rotaryvaporizer is reduced pressure distillation, that is,under reduced pressure, when the solvent is distilled, the distillation flask is continuously rotating
Structure: The distillation flask is a pear-shaped or round-bottom flask with a standard grinding interface, connected to a pressure relief pump by a high reflux serpentine condensing tube, and another opening of the reflux condensing tube is connected to a receiving flask with a grinding mouth for receiving the evaporated organic solvent. There is a three-way piston between the condensing tube and the decompression pump. When the system is communicated with the atmosphere, the distillation flask and the liquid flask can be removed and the solvent can be transferred. When the system is communicated with the decompression pump, the system should be in the state of decompression. When using, it should be DECOMpressed first, and then start the motor to rotate the distillation flask. At the end, it should be shut down first, and then air through to prevent the distillation flask from falling off in the rotation. As a heat source for distillation, it is often equipped with a corresponding constant temperature water tank.
Glass reactor mainly uses its double layer of glass characteristics, we can place the reaction material in the middle of the sandwich, through the atmospheric pressure or negative pressure under the condition of stirring reaction. In this way, the medium inside the interlayer of the glass reactor (such as freezing liquid, heating water or heating oil) can be heated or cooled by stirring in a circular reaction. It is widely used as an ideal equipment in modern biochemical new material synthesis experiments
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