In many parts of the world, access to clean drinking water is uncertain. However, the filtration of large amounts of water is slow and impractical. In the magazine Angewandte Chemie, scientists introduced a new method of water purification based on magnetic nanoparticles coated with so-called “ionic liquids” that simultaneously remove organic, inorganic and microbial contaminants and microplastics. The nanoparticles are then easily removed with a magnet. Under the leadership of Carsten Streb, Robert Güttel and Scott G. Mitchell, Ulm University, Ulm The (Helmholtz) Institute (Germany) and the CISC University of Zaragoza (Spain) in Spain have jointly developed an alternative method around a nanoparticle iron oxide with a magnetic core and a porous silica shell. The surface of the nanoparticles is coated with an ionic liquid layer. Ionic liquids are salts that are molten at room temperature and can be made liquid without the use of solvents. The ionic liquids used

The vast majority of industrial water used in coal mines is provided by the design pool of the ground purification 2 2 water level signal comparison circuit. Only a manhole is left on the purification pond as an outlet for removing mud. In this way, the pump driver cannot see the actual water level of the pond. When the pond is empty, it will force the underground to stop production, and when the water overflows, it will waste Bao water resources. In order to solve this problem, an automatic monitoring and control circuit is designed to perform real-time monitoring and control of the water level of the purified pool to achieve the purpose of automatic water level monitoring.

Hope (as the name implies, is to see, what to see?)When looking at the decoration materials, first look at the sheet labels, wallpaper, wallpaper adhesive, paint, wooden flooring product description, etc., and then look at the test report of the relevant materials, to be provided by the business or decoration company.Second, look at the furniture, first look at the brand, look at the product introduction, then look at the test report, then look at the interior of the furniture, and look at the internal material structure to determine the material situation by removing the drawer or screw. What has to be mentioned here is the mattress, which is the key observation object. By looking you can roughly understand the environmental protection of the materials used in decoration and furnitureSmell it is exactly what you understand. Use your nose to feel the material. Two aspects are whether there is a irritating

Pay attention to the purification effect when using the air purifier. What factors affect the purification effect of the air purifier? PChhouse will answer your questions one by one today.1, Filter material for air purifierThe superior purification effect of air purifier comes from high-quality filter material. There are various limitations of commonly used filter materials, such as non-woven fabrics and filter paper, which must ensure good permeability and effectively filter harmful substances in the air. It is difficult to balance the two; although activated carbon has a strong Adsorption capacity, but easily saturated, with the deposition of pollutants, the purification effect is significantly reduced.2, Air purification fan designEfficient purification efficiency comes from strong inflow and outflow. No matter which kind of purification method, the air needs to pass through the purification device, which requires that the purifier has good air circulation, and the fan is the energy source of the

Once autumn and winter, the weather was dry and the haze worsened. Ms. Wang of Huaian turned on the humidifier for 24 hours at home. However, she unexpectedly caused her two-year-old daughter to cough repeatedly and had an asthma attack. The doctor diagnosed “humidifier pneumonia”. Many people are very confused. The humidifier originally increased the humidity of the air and made the dry face and throat more comfortable. How could it cause pneumonia?In fact, the diseases that doctors call “humidifier pneumonia” are similar to the “air conditioning disease” common in summer. They are caused by harmful microorganisms entering the human respiratory tract through the air and causing inflammation. “Humidifier pneumonia” not only refers to a disease of pneumonia, but also includes a series of diseases of the respiratory system, such as upper respiratory infections (cold), bronchitis, asthma, and the like. Common symptoms are worsening of nasal congestion, cough, sputum, asthma,