What Are The Sewage Treatment Processes?

The Fifth Plenary Session of the Nineteenth Central Committee emphasized that the green mountains and green mountains are the concept of Jinshan Yinshan, and it is clear that the target tasks such as "governing the urban and rural living environment, promoting the full coverage of urban sewage pipe networks, and basically eliminating urban black and odorous water bodies." Doing a good job of sewage treatment is an important part of improving environmental quality and promoting green development. So what are the main current sewage treatment processes?

1. MBR
MBR is a new process of wastewater biological treatment composed of membrane separation and biological treatment technology. It is a new sewage treatment technology developed by traditional sewage biological treatment technology with high -quality membrane separation technology in recent years. There are many types of membranes, classifying according to the separation mechanism, there are reactive membranes, ion switching membranes, osmotic membranes, etc.; According to the nature of the membrane, there are natural membranes (biofilms) and synthetic membranes (organic membranes and inorganic membranes); Structural type classification, including flat, tube type, spiral type and hollow fiber type.

2. MBBR
The MBBR process uses the basic principles of the biofilm method and the advantages of the active sludge method at the same time, and uses suspension fillers as the carrier of microbial growth. The full fluidization of the secondary biochemical pool is achieved by the suspension fillers to achieve efficient treatment of sewage. The sewage continuously passes the suspension fillers in the MBBR reactor and gradually forms a biofilm on the inside and outside surface of the filler. Through the microorganisms on the biofilm, the sewage is purified. The MBBR reactor not only has the characteristics of traditional biofilm resistance to impact load, long age, and less residual sludge, but also has the efficiency and operation flexibility of the active sludge method.

3. Oxidation Sulcus
The oxidation sulcus is a special type of delayed aeration method. Its plane is like a runway. Two aeration and brushes (disks) are set in the groove. of. When the aeration equipment work, the ditch is quickly flowing to achieve oxygen supply and stirring.
Compared with ordinary aeration method, the oxidation groove has the provinces of infrastructure investment, easy maintenance and management, stable treatment effect, good water output, small sludge output, and good advantage of taking off N and P effects, and strong adaptation of load impact capabilities.

4. Biological Nitrogen Removal and Phosphorus Removal Process (A/A/O)
A/A/O process is anaerobic -hypoxic -aerobic biological nitrogen removal and phosphorus removal process. Its process pollutants have high efficiency, stable operation, good impact resistance, good sludge settlement performance, less chemical sludge, high phosphorus in the mud, high fertilizer effect. Organic coordination of three different environmental conditions: anaerobic, hypoxic, and oxygen can have the functions of removing organic matter, nitrogen removal and phosphorus and removing phosphorus and removing phosphorus and removing phosphorus. And under anaerobic -hypoxic -good oxygen alternation, silk -shaped bacteria will not reproduce in large quantities, SVI is generally less than 100, avoiding the problem of sludge expansion often occurred in conventional activated sludge methods. In the process of removing organic matter at the same time, this process process is the simplest, and the total hydraulic stay is less than other processes, and no carbon source is used. Low running costs.

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