The following separation methods are incorrect () A. remove sediment in salt water by filtration B. make tap water by distillation A. The sediment in the salt water is A refractory substance. the separation of the insoluble substance and the solution can be filtered, so A is correct;B. tap water contains volatile substances, which can be separated by distillation, so B is correct;C. iodine is easily soluble in organic solvent carbon monoxide and can be separated by extraction method, so C is correct;D. gasoline and vegetable oil are two mutually soluble substances. the separation of mutually soluble substances cannot be separated by liquid separation method, so D is wrong.D.
What is the difference between a precision filter and a bag filter? Precision filter, cylinder shell is generally made of stainless steel material, and tubular filter elements such as PP fusion spray, wire burning, folding, titanium filter element and activated carbon filter element are used as filter elements inside, different filter elements are selected according to different filter media and design process to meet the requirements of effluent quality. The body can also be installed quickly to replace the filter element and clean it easily and quickly. The equipment is widely used in pharmaceutical, chemical, food, beverage, water treatment, brewing, petroleum, printing and dyeing, environmental protection and other industries. it is an ideal equipment for filtration, clarification and purification of various liquids. The precision filter has many features such as high pollution removal capacity, strong corrosion resistance, good temperature resistance, large flow rate, convenient operation, long service