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(1) In terms of water purification, the presence of humic acid in aqueous solutions has always been a problem in water purification industry treatment, especially drinking water treatment projects
.
Most of them are biodegradable and bioaccumulative.
(2) In terms of wastewater, with the continuous development of modern industry, the number and types of chemically synthesized organic substances that enter water bodies through various channels have increased sharply.
These organic substances are diverse and complex, causing serious pollution to the water environment.
In particular, the pollution of toxic, harmful and refractory organic wastewater to the environment is the most serious
.
This type of wastewater pollution has the following characteristics
① Toxic
.
It often contains cyanogens, phenols, DDT or aromatic amines, nitrogen heterocycles and polycyclic aromatic hydrocarbon compounds that are teratogenic or carcinogenic to organisms and microorganisms, and some can accumulate in organisms for a long time and transfer to the human body through the food chain
②The water quality is unstable
.
The water quality has complex components and large changes in pH, sometimes acidic and sometimes alkaline
③Poor biodegradability
.
Wastewater contains a large amount of organic matter with complex structure and not easily biodegradable
(3) Sick Building Syndrome (SBS), which is currently widely concerned in air purification, is directly related to indoor air pollution
.
Countries around the world are paying more and more attention to indoor air pollution .
In recent years, a new technology based on chemical oxidation-advanced oxidation technology is becoming a hot topic in water treatment technology research
.
The so-called advanced oxidation technology is a technical process that uses various physical and chemical processes such as light, sound, electricity, and magnetism to generate a large number of free radicals, and then uses the strong oxidation characteristics of free radicals to degrade organic matter in wastewater