What is the main study of water and wastewater treatment theory and technology

1.The water treatment technology is mainly desalination, iron and manganese removal, disinfection and sterilization, so as to facilitate the use of ultrapure water in industry or human drinking.

2.The wastewater treatment technology is mainly to purify the polluted water (in the process of human production and life, when the water is used, it will be mixed with impurities, reducing the availability of water), reducing the concentration of pollutants, so that it can be discharged in the natural discharge process, the least harm.

If you consider**, reduce the amount of tap water at the source, and reuse reclaimed water can also be carried out. Of course, the result of wastewater treatment is generally to reduce the damage, downgrade the use, or meet the discharge standards and discharge the surface water system.

3.At present, the main technologies are physicochemical and biological technology, and biological technology is the main one, in which the study of how to use microorganisms to decompose organic pollutants, or use anaerobic microorganisms to convert organic matter into biogas, which is one of the energy sources. Others use microorganisms to remove nutrients such as nitrogen and phosphorus to prevent eutrophication of water bodies.

The use of physical, chemical and biological methods for treatment, so that the essence of wastewater, reduce pollution, has reached the first wastewater, reuse, disposal and utilization of water resources. The problem of wastewater pollution is a very serious problem facing society today. As a result, wastewater treatment technology has become a hot technology, and if you are going to go to university, it is recommended that you work hard in this area!!

Ammonia nitrogen and phosphorus in wastewater exceed the standard, such as treatment.

The main treatment method of wastewater: complexation extraction method.

Process flow: a wastewater purification method that uses an extractant that is incompatible with water but can dissolve pollutants, and after it is fully mixed with wastewater, it is separated and extracted by using different partition ratios of pollutants in water and solvent. The extractant containing the extractable is reused with the reverse extractant for reverse extraction, so as to use the useful substance, and regenerate the extractant and reuse.

Case: A chemical plant needs to read and discharge naphthalene sulfonic acid organic wastewater for treatment, most of the wastewater is high concentration, high toxicity, dark color and complex composition, which has serious harm to the human body and the environment. Due to the stable structure of organic matter in wastewater, it is difficult to remove impurities in wastewater by general oxidation method or biochemical method, while centrifugal extraction method can achieve better treatment effect.

A centrifugal extractor is used to centrifuge the material liquid. The results showed that the COD removal rate in the wastewater was as high as 96%; Then, 20% lye solution was used as the reverse extraction agent to reverse the organic phase, and it was found that the regenerated extractant after reverse extraction could be reused many times without affecting the extraction effect.

According to the principle, it is mainly divided into biochemical treatment and physicochemical treatment.

Biochemical treatment is a treatment method for the degradation of pollutants in sewage through the degradation of microorganisms, including activated sludge method, biofilm method, oxidation pond process and so on.

Physicochemical methods mainly remove pollutants in sewage through physical action or chemical reaction, including silent flocculation and sedimentation, filtration, and neutralization reaction

The WFRP-B device consists of five main parts:

Grid grit tank, regulating tank, integrated sewage treatment equipment, sand filter ecological pool, equipment room.

1.Grid grit remover tank: isolate the large debris and floating objects in the incoming water, and at the same time make the larger particles in the incoming water settle down here. Simple grids or mechanical grids can be selected according to water quality conditions. Screening slag and grit are cleaned regularly, and handed over to the municipal government for unified treatment after disinfection.

2.Regulating Tank: Regulate the amount of water and balance the water quality. Improve the impact load resistance of the system.

3.Integrated sewage treatment equipment: the main process is a biochemical process, with built-in sedimentation and sludge return system.

The shell is made of mechanically wound FRP tank body, which is a buried design. The core part of the equipment is the biological contact oxidation section, which adopts the immobilized living cell process and adds an external high-efficiency aeration system to dissolve the organic matter in the water through the life metabolism of aerobic cells, so as to achieve the purpose of purifying water quality. The equipment is particularly suitable for the purification process of domestic wastewater.

4.Sand filter ecological pool: It can be used as an effective supplement to the integrated sewage treatment equipment and carry out advanced treatment of the effluent of the integrated sewage treatment equipment.

The treatment system is a single-level manifestation of the constructed wetland ecosystem. Through the adsorption of substrate, the digestion of microorganisms and the absorption of plants, the effluent water quality is stable to meet the design requirements.

5.Equipment room: There are two blower aerators and PLC automatic control equipment.

The blower aerator is one for use and one for standby, and it is switched to run. All equipment in the sewage treatment station is automatically controlled and switched through PLC control equipment, and automatic protection is carried out for overcurrent, phase loss, overvoltage, undervoltage and other faults.

Instructions:1In the figure, the anoxic tank, biochemical tank, sedimentation tank and disinfection tank are integrated into an integrated sewage treatment equipment.

2.The conditioning tank selectively aerates as needed.

3.The whole process will take the integrated biochemical equipment as the main unit, and according to the sewage quality and quantity and the treatment standards required by the buyer, the other individual units will be added or decreased in total to ensure the long-term and stable discharge of effluent.

Both sewage and wastewater refer to water bodies that contain a large number of harmful substances and are discharged due to chemical, production and living activities. Among them, sewage mainly refers to the mixture of urban domestic sewage and industrial production wastewater, while wastewater refers to the water body discharged in industrial production. These two types of water have the following characteristics due to the different discharge sources and different discharge methods.

First of all, the chemical composition of sewage and wastewater is complex, which contains a large number of harmful substances and nutrients such as organic matter, inorganic matter, suspended particulate matter, heavy metal ions, and germs. Among them, organic matter and fertilizer components are easily decomposed by bacteria to form high value-added resources such as biogas, while harmful substances and heavy metals can cause serious harm to the environment and human health. In addition, sewage and wastewater also contain a large number of pathogenic bacteria and bacteria, which can cause great harm to people's bodies, such as causing the spread of epidemics.

Secondly, the concentration of chemicals in sewage and wastewater is high, which is highly polluting. Because it contains a high content of harmful substances, once discharged into the environment, it will form a strong pollution. In addition, since sewage and wastewater come from different sources of discharge, some water bodies may also contain specific pollution, such as industrial wastewater containing high concentrations of chemicals and heavy metals, which are more harmful to the environment.

Finally, the cost of sewage and wastewater treatment is high. Because it contains a large number of harmful substances and the concentration is high, a higher level of treatment is required to meet the emission standards stipulated by the state. This necessitates upgrades and modifications to treatment equipment and processes, which increases the cost of treatment.

In general, both sewage and Naxiao resistant wastewater have the characteristics of complex chemical composition, high concentration and high treatment cost. These characteristics pose a significant threat to the environment and human health. Therefore, these water bodies must be treated and managed in a standardized manner to achieve the goals of environmental protection and sustainable development.