The AO process, i.e., the activated sludge process, is a technology widely used in municipal sewage treatment and industrial wastewater treatment
The process adopts the method of biological treatment, through the cultivation and utilization of microorganisms in activated sludge, the organic matter in the wastewater is decomposed into harmless substances, so as to achieve the purpose of purifying the wastewater.
The core of the AO process is the cultivation and utilization of activated sludge.
In the aeration tank, the wastewater is mixed with the activated sludge, which is supplied with oxygen through aeration to keep the activated sludge in suspension.
In this process, the organic matter in the wastewater is adsorbed by microorganisms and broken down into harmless substances such as carbon dioxide and water. At the same time, the microorganisms in the activated sludge continue to multiply through their own metabolism, forming a stable ecosystem.
It has a high removal rate of organic matter and can meet high emission standards.
The process is easy to operate, low cost, and suitable for large-scale wastewater treatment.
The AO process can also realize the removal and resource utilization of other harmful substances in wastewater through various transformations and technology upgrades.
The cultivation and utilization of activated sludge requires a lot of energy and resources, and at the same time produces a large amount of residual sludge, which needs to be properly disposed of.
The process is relatively poorly adapted to water quality and quantity and is susceptible to shock loads.
The aeration and oxygen supply process of AO process will produce certain noise and odor, which needs to be treated and protected accordingly.
In summary, the AO process is a wastewater treatment technology with a wide range of application prospects. In the future development, it is necessary to continuously improve and perfect the process, improve its treatment effect and resource utilization, and make greater contributions to environmental protection and sustainable development. 