Purified water treatment equipment with disinfection and sterilization system, 500 liters per hour

Process flow diagram of purified water treatment equipment:

Raw water tank - Raw water pump - Multi medium filter - Activated carbon filter - Scale inhibition device - Precision filter - First stage high-pressure pump - First stage reverse osmosis - Intermediate water tank - PH regulating device - Second stage high-pressure pump - Second stage reverse osmosis - UV - Production water tank (ozone)

Structure and principle of purified water treatment equipment:

1. Activated carbon
Activated carbon is a type of carbon compound with well-developed micropores, consisting of black powder or block shaped, granular, honeycomb shaped amorphous carbon, as well as neatly arranged crystalline carbon. It has an extremely rich pore structure (up to 1000 square meters per gram), thus possessing strong adsorption performance and is one of the most commonly used water purification materials in water treatment applications It can remove discoloration, odor, organic matter, and residual chlorine from water, while also improving the taste of water.

2. Microfiltration
Microfiltration, also known as microporous filtration, belongs to precision filtration. The filtration accuracy is generally between 0.03-15 microns, which is a membrane process that uses static pressure as a driving force and the sieving effect of the mesh filter medium for separation. Microfiltration membranes have a relatively neat and uniform porous structure. Under the action of static pressure difference, particles smaller than the membrane pores pass through the membrane, while particles larger than the membrane pores are trapped on the membrane surface, allowing components of different sizes to be separated

Various common PP filters, ceramic filters, etc. belong to the category of microfiltration, which can filter large particles of impurities such as sediment and rust in water
The filtration accuracy is between microfiltration and nanofiltration, with a pore size range of 0.002-0.1 microns. It is a method of using differential pressure membrane separation technology, which filters raw water from the high-pressure end to the low-pressure end under pressure. Ultrafiltration can generally filter out harmful substances such as rust, sand, colloids, bacteria, and large molecule organic compounds in water, and retain some mineral elements that are beneficial to the human body It is a core component in the production process of mineral water and mountain spring water

3. Reverse osmosis
Reverse osmosis, also known as reverse osmosis, is a membrane separation operation that uses pressure difference as a driving force to separate solvents from a solution. Because it is opposite in direction to natural infiltration, it is called reverse osmosis.

The secondary reverse osmosis device uses pressure to force water molecules to pass through a reverse osmosis membrane that selectively allows water molecules to pass through, which is the principle of reverse osmosis water purification.

Reverse osmosis technology is an ultra high precision membrane separation technique developed by the United States in the early 1960s for use in space, utilizing pressure differentials The main principle is to apply a pressure higher than the natural osmotic pressure on one side of the raw water, reverse the natural osmotic direction, and direct the original pressure towards the other side of the RO membrane to purify the water. This is the opposite process of osmotic pressure in nature

The precision of reverse osmosis filtration is around 0.00001 microns. In theory, it can filter out almost all impurities (including harmful and beneficial) in water, and only allow water molecules to pass through Generally used for the production of pure drinking water, industrial ultrapure water, and pharmaceutical ultrapure water Reverse osmosis technology requires back pressure of raw water The control system can be used to backwash the reverse osmosis membrane, improving its service life

4. Ultraviolet (UV) radiation
The main process of cell proliferation is: the long strands of DNA are opened, and after opening, the adenine units of each long strand search for thymine units to bind. Each long strand can replicate the same chain as the newly separated long strand, restoring the original intact DNA before division and becoming the basis of a new cell. Ultraviolet rays with wavelengths between 240-280nm can break the ability of DNA to produce proteins and replicate, with the wavelength of 265nm having the strongest killing ability against bacteria and viruses. After the DNA and RNA of bacteria and viruses are damaged, their ability to produce proteins and reproduce has been lost. Due to the short lifespan of bacteria and viruses, those that cannot reproduce will quickly die. Ultraviolet radiation is used to prevent the survival of microorganisms in tap water, achieving the effect of sterilization and disinfection.

5. Ozone sterilization
The disinfection principle of ozone (O3) is that its molecular structure is unstable at room temperature and pressure, and it quickly decomposes into oxygen (O2) and individual oxygen atoms (O) on its own; The latter has strong activity and has a strong oxidizing effect on bacteria, killing them. Excess oxygen atoms will recombine into ordinary oxygen atoms (O2) on their own, without any toxic residues, so it is called a pollution-free disinfectant. It not only has strong killing ability against various bacteria (including hepatitis virus, E. coli, Pseudomonas aeruginosa, and miscellaneous bacteria), but also is effective in killing mycotoxins.

(1) The sterilization mechanism and process of ozone belong to biochemical processes, which oxidize and decompose the glucose oxidase necessary for the internal oxidation of glucose in bacteria.

(2) Directly interacting with bacteria and viruses, it destroys their organelles and ribonucleic acid, breaks down large molecular polymers such as DNA, RNA, proteins, lipids, and polysaccharides, and disrupts the metabolic production and reproductive processes of bacteria.

(3) Penetrating cell membrane tissue, invading the cell membrane and acting on outer membrane lipoproteins and internal lipopolysaccharides, causing cell permeability distortion and leading to cell lysis and death. And the genetic genes, parasitic strains, parasitic virus particles, bacteriophages, dendrites, and pyrogens (bacterial and viral metabolites, endotoxins) in the dead bacteria will be dissolved, denatured, and destroyed.

Application fields of purified water treatment equipment: