Rotary contact oxidation wastewater treatment process technology
It is a new generation of aerobic biofilm treatment technology developed on the basis of biological turntable technology and combining the advantages of biological contact oxidation technology. The microorganisms attached to the turntable are living. When the organic matter in the sewage increases, the microorganisms follow Increase, on the contrary, when the organic matter in the sewage is reduced, the microorganisms are also reduced,
Chemically enhanced biological phosphorus removal wastewater treatment process
The major rivers and lakes in China are seriously eutrophic due to phosphorus pollution. The Environmental Protection Agency has set stricter standards for phosphorus emissions in order to control phosphorus pollution. In the sewage treatment process, the chemically enhanced biological phosphorus removal wastewater treatment process mainly removes organic pollutants and various forms of phosphorus in the sewage. This wastewater treatment process integrates chemical phosphorus removal and biological phosphorus removal, and anaerobic digestion of biological systems Medium activated sludge produces volatile organic acids. It is used as a substrate or a nutrient for the growth of polyphosphate bacteria, which allows polyphosphate bacteria to selectively multiply in activated sludge and return it to biological systems for biological wastewater treatment. The system works in the phosphorus removal state; at the same time, the phosphorus produced by the sludge under anaerobic conditions is released and eliminated by chemical phosphorus removal.
The chemically enhanced biological phosphorus removal wastewater treatment process is a municipal wastewater treatment process technology that meets the current stage of our country. In order to solve the eutrophication of water bodies, it is necessary to further remove phosphorus on the basis of conventional secondary sewage treatment.
Circulating intermittent aeration sewage treatment process
Because the level of economic development in China varies greatly from place to place, cities with relatively lagging economic development still cannot afford a lot of funds for sewage treatment. Therefore, how to use limited funds to reduce environmental pollution to a certain extent is a problem faced by many city governments. At present, some cities also use the first-level or first-level enhanced treatment process technology, and the effluent does not meet the requirements of the second-level discharge standards for the removal of organic pollutants.
The cyclic intermittent aeration sewage treatment process fully utilizes the advantages of high load oxidation ditch treatment efficiency, and makes full use of the characteristics of the good water output of the sequential batch activated sludge sewage treatment process, which ensures that the system effluent reaches the first level standard of sewage discharge. Contamination requirements. In terms of investment and operating costs, it is about 30% lower than a secondary biological wastewater treatment system that usually removes organic pollutants. It is a process technology suitable for China's current wastewater treatment requirements.
