2019 drainage technology seminar of water industry branch of china civil engineering society
on november 8-11, 2019, the 2019 drainage technology seminar of water industry branch of china civil engineering society was held in guiyang guizhou hotel. the meeting focused on the hot topics of water treatment, such as upgrading and operation management cases of sewage treatment, black and smelly water treatment, sewage treatment and integrated wastewater discharge standards, and carried out in-depth exchanges. ye changming, chairman of qingquan water industry in shenzhen, together with wang xiaolin, chief engineer of technology center and peng jincheng, manager of technology department i, was invited to participate in the technical seminar and made a special report on the application and practice of upflow filter in the upgrading of sewage treatment plant.
in the report, mr. ye shared the development history of filter in the field of water treatment application, and especially thanked professor wu guangchun of hunan university for his guidance. the upflow filter is based on the theory of inverse particle size filtration. shenzhen qingquan has broken through a series of technical problems in the application of upflow filter - completely solved the problems of filter material regeneration, uniform water distribution, short flow of filter bed, loss of filter material, construction difficulties, reliable operation, etc. it has been successfully applied in municipal water supply treatment, sewage treatment, aquaculture circulating water treatment, industrial wastewater advanced treatment, sewage interception treatment in black and smelly river and other fields.
mr. ye pointed out that the upflow filter was developed successfully based on the theory of inverse particle size filtration, which is also called ideal filtration theory. it is a major scientific discovery in the field of water treatment and filtration, so it has a broad application prospect. for example, as a biological aerated filter, the problem of clogging has been solved thoroughly; as a deep bed denitrification filter, the efficiency of phosphorus and nitrogen removal has been greatly improved; as an upflow filter applied in the field of water supply, the water yield can be increased by more than 50%. different from the surface filtration of the downflow filter, the whole filter bed of the upflow filter has a strong filtration effect, and its capacity is more than 5 times that of the common downflow filter. in addition, there is no increase of dissolved oxygen caused by water drop in upflow filter, and the carbon source can be saved by more than 30%.
after more than 20 years of continuous research and in-depth exploration, shenzhen qingquan has obtained dozens of invention patents and software 飞禽走兽游戏机 copyrights, and the upflow filter has won the national key new product certification. the national urban water supply and drainage design code for upflow filter, jointly edited by shenzhen qingquan and central south municipal council, was officially implemented on january 1, 2017. based on the upflow filter in qingquan, shenzhen, the developed non clogged biological aerated filter and upflow denitrification deep bed filter are widely used in many fields, such as the upgrading of wastewater treatment plants, the construction of new ones and the advanced treatment of industrial wastewater. the company's performance has spread over more than 30 provinces in china, with more than 300 successful cases.
the emergency project of shanwei east sewage treatment plant in guangdong province is a new project of the whole process, which adopts the intelligent modular standard part product of shenzhen qingquan, and the core is the cbm process combined with cbc baf mdf (up flow denitrification deep bed filter). the whole process has a residence time of only 2.5hr, and the total operation cost is about 0.25 yuan / ton water. in addition to the cbm process of shenzhen qingquan, two sets of treatment processes, oxidation ditch and a2o mbr, have been adopted in shanwei east sewage treatment plant. through the comparison of the three processes, it is found that the cbm process of qingquan in shenzhen has an absolute advantage in the area, operation and maintenance cost and investment cost.
the upflow filter technology of qingquan in shenzhen can not only easily upgrade the water quality of the sewage treatment plant from grade b to grade a, but also adapt to the constantly improving water quality standards, so as to achieve the better quality of the effluent than the surface quasi class iv. as the editor in chief of the national urban water supply and drainage industry's upflow filter design specification, shenzhen qingquan will continue to provide the world's urban water supply and drainage system with industry operation solutions that save land, time, labor and money, uphold the corporate vision of "making water cleaner and life more beautiful", and strive to become "intelligent modular water treatment equipment and solutions" leader ".
