Professional manufacture factory for waste incinerator, sewage treatment and sludge dewatering equipment.
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Professional manufacture factory for waste incinerator, sewage treatment and sludge dewatering equipment.
In a wide variety of modern sewage treatment technologies, as the basic process of biochemical treatment, AO process (anaerobic-aerobic process) and A2O process (anaerobic - anoxic - aerobic process) are like a low-key and efficient magician, in order to simplify the process, efficient treatment capacity has been applied in a large number of applications. Today, let Shandong Better Environmental Protection company take you to understand the AO process and A2O process.
1. AO process
AO process was produced in the 1970s, also known as anaerobic aerobic process, A is the anaerobic section, mainly used for nitrogen and phosphorus removal; O is the aerobic section, which is mainly used to remove organic matter from water. Because of its high efficiency of organic matter degradation and nitrogen removal, simple process, convenient operation and management, low investment and low operating costs, it has been widely used. Because the sewage treatment process is determined according to the amount of sewage, water quality, effluent requirements and local actual conditions and other factors, small and medium-sized urban domestic sewage treatment stations generally choose the AO process.
2. A2O process
A2O process is the abbreviation of anaerobic-anoxic-aerobic biological nitrogen and phosphorus removal process. It is a high efficiency, energy saving, small footprint of sewage treatment technology. Through the reaction of anaerobic, anoxic and aerobic phases, pollutants such as organic matter, nitrogen and phosphorus can be removed at the same time to achieve a high level of treatment effect. However, its requirements for influent water quality, temperature and PH value are high, and the resulting sludge needs to be regularly maintained and treated. In practical application, it is necessary to select appropriate process and operation control strategy according to the specific situation to ensure the stable operation of the system and the standard discharge of the effluent quality. It is generally suitable for large and medium-sized urban sewage plants requiring nitrogen and phosphorus removal.
The AO process is used in the buried sewage treatment device designed and manufactured by Shandong Better Environmental Protection, and the A2O process is also used in the MBBR integrated sewage treatment equipment. The use of these two processes realizes the effective purification of water quality around the domestic and industrial sewage treatment station, demonstrating the win-win model of environmental protection and economy. This practice is not only a successful improvement of the activated sludge method, but also a physical proof of Shandong Better Environmental Protection's commitment to the construction of ecological civilization.
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