Water is an indispensable natural resource for human development and the material basis for human beings and all living things to survive. In today's world, the water crisis caused by insufficient water resources and pollution has become a major constraint to the complex problems and socio-economic development of any country in terms of policy, economy and technology.
In the absence of water resources, the reality of water pollution has raised concerns. In many parts of China, many water bodies have been seriously polluted due to various complicated factors, which further exacerbates the contradiction of water shortage.
Today's human society has two major categories of water resources development and utilization:
The first is the amount of water needed to remove the water resources. After meeting the needs of the people's life and industrial and agricultural production, the quantity is consumed, the quality has changed, and the water source is returned to another place.
The other is to take water (hydropower), develop water transport, aquatic products and water recreation, maintain ecological balance, etc. This kind of utilization does not need to divert water from the water source, but it needs a certain water level, flow and flow in rivers, lakes and estuaries. Water quality. The main ways to solve the problem of water stress are:
1) Reduce industrial water consumption and increase water reuse rate
2) Implement scientific irrigation to reduce waste of agricultural water
3) Recycling urban sewage and opening up second water source
To solve the water problem that is closely related to human social life in reality, modern water treatment technology and water treatment equipment must be used.
To put it succinctly, "water treatment equipment" is to remove some harmful substances in the water that are not needed for production and life through various physical and chemical means. This kind of equipment for filtering and purifying water. Since social production and life are closely related to water, the water treatment field covers a wide range of applications and constitutes a huge industrial application.
working principle
The RO-reverse osmosis pretreatment process is mainly activated carbon and fine filtration. Permeation is a natural phenomenon: water passes through the semipermeable membrane from the side of the low solute concentration to the side of the high solute concentration until the solvent chemical level reaches equilibrium. At equilibrium, the pressure difference across the membrane is equal to the osmotic pressure. This is the phenomenon of Osmosis. Reverse osmosis means that if the pressure is applied to a high concentration side, the above-mentioned osmotic effect can be stopped and reversed, and the water is forced from a high concentration to a low concentration side to purify the water. This phenomenon is called reverse osmosis (reverse osmosis), and this semi-permeable membrane is called a reverse osmosis membrane.
Features
Reverse osmosis water treatment equipment can filter out bacteria, viruses, heavy metals, pesticides, organic matter, minerals and odors in water. It is a kind of pure water and can be drunk without heating. The amount of water it filters out is very low. The pure water produced is of high quality and the sanitary index is ideal.
Reverse osmosis is the preparation of pure physical process by using advanced reverse osmosis desalination technology to prepare deionized water. The reverse osmosis pure water unit has the advantages of long-term uninterrupted work, high degree of automation, convenient operation, long-term stability of effluent water quality, no pollutant discharge, and low cost of producing pure water. Reverse osmosis membrane technology has been widely used in domestic medicine, biology, electronics, chemical, power plants, sewage treatment and other fields.
infrared red light helmet 810nm Photobiomodulation benefits and photobiomodulation therapy near me
Photobiomodulation (PBM) describes the use of red or near-infrared light to stimulate, heal, regenerate, and protect tissue that has either been injured, is degenerating, or else is at risk of dying. One of the organ systems of the human body that is most necessary to life, and whose optimum functioning is most worried about by humankind in general, is the brain.
Photobiomodulation
In biological systems, there are various instances of light-induced photochemical reactions. Light interacts with photosensitive cells in our retinas called photoreceptors to give us vision. A photochemical reaction happens when light is absorbed by these cells, transforming light energy into electrical impulses that are delivered to the brain's visual processing areas. Another photochemical event is the creation of vitamin D in our skin. When the ultraviolet B (UVB) wavelength of sunlight contacts our skin, it transforms 7-dehydrocholesterol, a naturally occurring type of cholesterol, to vitamin D3. The harmful consequences of a lack of light on the human body are widely documented. Seasonal affective disorder (SAD) and vitamin D deficiency, which causes rickets, are two instances.
Photobiomodulation (PBM) is the word for the mechanistic/scientific foundation of this photonic speciality, while photobiomodulation treatment (PBMT) is the term for its therapeutic application. The initial version of PBMT was created in the 1960s. The early years of this nascent photonic application were marred by a slew of issues, including a lack of consistency in nomenclature. Biostimulation, Cold/Cool Laser, Low Level Laser Therapy, Soft Laser, and Low Power Laser Therapy were among the terminology introduced. PBM and PBMT are currently the terminology of choice, according to recent agreement in the profession.
PBMT was added to the National Library of Medicine MeSH database in 2015 as an entry term to the existing record of laser treatment, low-level, owing to Dr. Praveen Arany's work. In conclusion, PBM and PBMT are precise and explicit terminology for this crucial and effective therapeutic use of light.
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