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CE

  • Categories:NEWS
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  • Time of issue:2022-01-22 14:08
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(Summary description)Wastewater treatment is to use physical, chemical and biological methods to treat wastewater to purify wastewater and reduce pollution, so as to achieve wastewater recycling and reuse, and make full use of water resources.

CE

(Summary description)Wastewater treatment is to use physical, chemical and biological methods to treat wastewater to purify wastewater and reduce pollution, so as to achieve wastewater recycling and reuse, and make full use of water resources.

  • Categories:NEWS
  • Author:
  • Origin:
  • Time of issue:2022-01-22 14:08
  • Views:
Information

Wastewater treatment is to use physical, chemical and biological methods to treat wastewater to purify wastewater and reduce pollution, so as to achieve wastewater recycling and reuse, and make full use of water resources.

customized Wastewater treatment Manufacturers china
1. Physical treatment method
Wastewater treatment manufacturers tell you that the methods of separating and recovering insoluble suspended pollutants (including oil films and oil droplets) in wastewater through physical action can be divided into gravity separation, centrifugal separation and sieving and retention. The processing units belonging to the gravity separation method include sedimentation, floating (air flotation), etc., and the corresponding processing equipments are grit chambers, sedimentation tanks, oil separators, air flotation tanks and their accessories. Wastewater treatment manufacturers tell you that the centrifugal separation method itself is a processing unit, and the processing devices used include centrifugal separators and hydrocyclones. The sieve retention method has two processing units: grid sieve retention and filtration. The former uses grids and screens, while the latter uses sand filters and microporous filters. The treatment method based on the principle of heat exchange also belongs to the physical treatment method, and its treatment unit includes evaporation, crystallization and so on.
One method of removing organics from wastewater is activated carbon adsorption. Activated carbon treatment can be used in conjunction with the activated sludge process, in which powdered activated carbon is used. Wastewater treatment manufacturers tell you that powdered activated carbon can adsorb substances that are toxic to microorganisms and eventually collect with the sludge. The main danger of the activated carbon method in the sewage treatment process is that the expired activated carbon may always exist in the water.
2. Chemical treatment
Wastewater treatment is a method of separating and removing dissolved and colloidal pollutants in wastewater or converting them into harmless substances through chemical reactions and mass transfer. In the chemical treatment method, the treatment units based on chemical reaction by adding chemicals are: coagulation, neutralization, redox, etc.; while the treatment units based on mass transfer are: extraction, stripping, stripping , adsorption, ion exchange, electrodialysis and reverse osmosis, etc. The latter two processing units are collectively referred to as membrane separation technology. Wastewater treatment manufacturers tell you that the treatment unit that uses mass transfer has both chemical effects and physical effects related to it, so it can also be separated from chemical treatment methods and become another type of treatment method, called physical chemical method. .
3. Biological treatment method
Wastewater treatment manufacturers tell you that through the metabolism of microorganisms, organic pollutants in the state of solution, colloid and fine suspension in wastewater are converted into stable and harmless substances. Wastewater treatment method. According to the different microorganisms, biological treatment methods can be divided into two types: aerobic biological treatment and anaerobic biological treatment.
The aerobic biological treatment method is widely used in the biological treatment of wastewater. Traditionally, the aerobic biological treatment method is divided into two categories: activated sludge method and biofilm method. The activated sludge process is itself a treatment unit, and it operates in a variety of ways. Wastewater treatment manufacturers tell you that the treatment equipment belonging to the biofilm method includes biological filters, biological turntables, biological contact oxidation tanks and biological fluidized beds. Biological oxidation pond method is also called natural biological treatment method. Anaerobic biological treatment, also known as biological reduction treatment, is mainly used to treat high-concentration organic wastewater and sludge. The processing equipment used is mainly a digester.
The biological contact oxidation method is used to treat wastewater, that is, the biological contact oxidation process is used to fill the filler in the biological reaction tank, and the oxygenated sewage immerses all the filler and flows through the filler at a certain flow rate. Wastewater treatment manufacturers tell you that the filler is covered with biofilms, and the sewage is in extensive contact with the biofilm. Under the action of the metabolism of microorganisms on the biofilm, the organic pollutants in the sewage are removed and the sewage is purified. Finally, the treated wastewater is discharged into the biological contact oxidation treatment system to be mixed with domestic sewage for treatment, and then discharged up to the standard after chlorine disinfection. Wastewater treatment manufacturers tell you that the biological contact oxidation method is a biofilm process between the activated sludge method and the biological filter. The sewage in the tank is in a flowing state to ensure that the sewage is in full contact with the filler immersed in the sewage, and to avoid the defect of uneven contact between the sewage and the filler in the biological contact oxidation tank. This aeration device is called blast aeration.
Wastewater treatment manufacturers tell you the microbial fuel cell treatment method, which uses the microorganisms inoculated in the fuel cell that degrade waste to degrade toxic substances, organic substances and impurities. Common microbial fuel cells can be divided into: single-chamber microbial fuel cells and dual-chamber microbial fuel cells.

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