Analysis of treatment process characteristics of domestic sewage treatment equipment:
1. AO process: also called anaerobic and aerobic processes. In the anaerobic section, anaerobic bacteria hydrolyze and acidify starch and carbohydrate-soluble organic matter in domestic sewage, and degrade large molecular organic matter into small molecular organic matter to improve subsequent aerobic treatment capabilities. The AO process has the characteristics of a simple process, low investment, and total nitrogen removal of more than 70%. However, since there is no independent sludge return system, sludge with unique functions cannot be cultivated, and the treatment efficiency for refractory wastewater is low. In addition, it is difficult to improve the denitrification efficiency and reach 90%. We recommend that the AO process be used in domestic sewage treatment sites that do not have high requirements for treated water quality.
2. Aerobic method: A method that uses aerobic microorganisms to degrade and metabolize wastewater under aerobic conditions. Commonly used aerobic treatment methods include the activated sludge method, biofilm method, biological contact oxidation, biological fluidized bed and other methods.
3. Anaerobic method: A method of treating wastewater through the degradation and metabolism of anaerobic microorganisms under anaerobic conditions. Common anaerobic treatment methods include anaerobic pond method, anaerobic filter bed method, anaerobic flowing bed method, anaerobic expanded bed method, anaerobic rotating disk method, anaerobic tank method, and upflow anaerobic sludge method. Bed (UASB) method, etc.
The operating conditions of the anaerobic method are harsher than the aerobic method, but the overall cost is lower. Usually, in order to achieve better treatment results, aerobic and anaerobic methods are used together.
4. Biological enzymatic method: Organic matter forms free radicals through enzymatic reactions, and then the free radicals undergo chemical polymerization to form polymer compound precipitation.
Commonly used processes for domestic sewage treatment equipment to treat domestic sewage include: A0 process, A2O process, MBR process, aerated biological filter, and SBR process.
Products that may be used in water treatment include:
Polyacrylamide
Polyaluminium chloride
