Chemistry laboratories are one of the most common places in universities and research institutes, and the large amount of sewage produced in them often pollutes the environment. Therefore, the design and installation of efficient sewage treatment equipment is indispensable to solve this problem. This article will ** the relevant knowledge of sewage treatment equipment in chemical laboratories.
First of all, you need to understand the types of sewage treatment equipment. Normally, the sewage treatment equipment used in chemical laboratories includes mechanical treatment equipment and biochemical treatment equipment.
Mechanical processing equipment typically includes a grid and a sedimentation tank. Screens are used to filter and remove large particles, such as cotton balls, paper scraps, and other impurities. The sedimentation tank mainly uses the different specific gravity of sewage to precipitate heavy impurities to the bottom of the tank, so as to remove impurities such as solid particles and floats in the water.
Biochemical treatment equipment is mainly used to treat organic matter and dissolved pollutants. Common biochemical treatment equipment includes activated sludge method, biofilm reactor, constructed wetland, etc.
Among them, the activated sludge method is a technology widely used in the treatment of sewage. By adding bacteria to the mixed wastewater, these bacteria can grow with organic matter, thereby reducing the concentration of organic matter. This technology has the advantages of mature technology, simple operation and good effect.
A biofilm reactor is a device that treats wastewater by attaching bacteria to a solid carrier. The use of this method can greatly increase the volumetric load of wastewater treatment equipment and reduce operating costs.
In addition to the above two common biochemical treatment equipment, constructed wetland is also a relatively common treatment equipment. Constructed wetland is an ecological treatment equipment that uses plants, soil, sludge, etc. as the main treatment medium. By selecting different plant combinations to form different constructed wetland systems, organic matter, ammonia nitrogen, total phosphorus, etc. can be removed from the sewage.
There are a number of factors that need to be considered when selecting wastewater treatment equipment. The first is economics. Cost and operating expenses are important factors to consider when choosing a wastewater treatment plant. The second is the processing effect. The treatment effect of various sewage treatment equipment is not the same, and it is necessary to choose the appropriate treatment method according to the characteristics of different wastewater. Finally, there is the difficulty of operation and maintenance. Different sewage treatment equipment requires different maintenance costs and difficulties, and choosing treatment equipment that is easy to maintain can reduce maintenance costs and improve the service life of the equipment.
In the daily laboratory management, we should strengthen the maintenance of sewage treatment equipment to avoid the decline of wastewater treatment effect due to the lack of timely maintenance of equipment. At the same time, when treating sewage, attention should be paid to the flow and concentration of wastewater, so as to adjust the operation mode and time of the treatment equipment in time to ensure the treatment effect.
To sum up, the sewage treatment equipment of the chemical laboratory is a key part of ensuring the environmental environment and safety of the laboratory itself. In the process of selection and use, we should pay attention to many factors such as economy, treatment effect and maintenance difficulty, and strengthen management and maintenance to make the laboratory sewage treatment equipment play the greatest role.