It is suggested that the guided biological aerated filter (CCB) be used for sewage treatment. CCB can make sewage complete the process of aeration → sedimentation → secondary aeration → secondary sedimentation in the same treatment tank, which solves other technological processes that need to be completed by four tanks. Especially in the case of continuous water inflow, intermittent aeration of water inflow → aeration → sedimentation → effluent is realized, and sludge backflow is realized at the same time, and the whole operation is not idling. Its advantages are more prominent than other sewage treatment methods, and the treatment effect is particularly remarkable. CCB sewage treatment equipment is an updated product of sewage treatment equipment such as AB method, SBR method, A2O method, contact oxidation method, secondary aeration and intermittent aeration. In June 2009, it was listed as an "innovative project" by the Ministry of Science and Technology with the project code of 09C26215205564; . In June 5438+February, 2009, the Ministry of Environmental Protection listed this product in the Catalogue of Environmental Protection Technologies Encouraged by the State (UNCED 2009/2009) 2009 146); 20 10 in may, the Ministry of science and technology, the Ministry of environmental protection, the Ministry of commerce and the general administration of quality supervision, inspection and quarantine identified the diversion biological aerated filter as a national key new product with the number of 20 10GR4670 10.
CODcr has been applied in Beijing, Shandong, Hebei, Guizhou, Shanxi, Sichuan, Inner Mongolia, Heilongjiang, Guangdong, Guangxi, Shaanxi, Gansu, Ningxia, Xinjiang, Jiangsu, Jilin, Henan, Hubei and Tianjin in China. The case was established and a lot of wastewater treatment was carried out, such as family, hospital, chemical industry, slaughter, food, flax, alcohol and pharmacy. Generally, BOD5 is below 10 mg/L, and the lowest is 3.50mg/L.: SS is generally below 20 mg/l, and the lowest is 6.55 mg/l.
CCB sewage treatment equipment fully draws lessons from SBR method, AO method, A2O method, oxidation ditch method, activated sludge method, biofilter, biological turntable, biological contact oxidation, anaerobic digestion, hydrolytic acidification, UASB and other anaerobic biological treatment methods and the design technology of secondary or tertiary sewage treatment process, and develops innovative technologies for advanced sewage treatment. In 2005, China National Intellectual Property Administration was approved as a national patent product with patent number ZL200420033672.4.