"advances in theoretical research, transformation of scientific research achievements, bridges for innovation and sharing". on november 23-24, 2018, the national technical exchange conference on new technologies and new technologies for advanced sewage treatment of class iv surface water standards and the national advanced seminar on standard-raising and innovative technologies for urban sewage treatment plants and rural sewage treatment were held in hangzhou. shixiangrui lex hotel was grandly held. dai wenquan, deputy general manager of qingquan, shenzhen, shared with you the core technology of upgrading and promoting target of sewage treatment plant-upward flow denitrification deep bed filter, which helped the construction and renovation of municipal wastewater treatment plants in the industry, and perfectly presented the advanced technology and application of shenzhen qingquan in the field of water treatment.
at 9:00 a.m. on the 23rd, the opening ceremony of the conference was officially launched, with all the industry experts and media present. the conference focused on the promotion and renovation of sewage treatment plants and innovative technologies for rural sewage treatment. the industry organizations and enterprise experts on the spot demonstrated new technologies and technologies for sewage treatment. as a benchmark enterprise of upflow filter technology, shenzhen qingquan is the standard drafting unit of "upflow filter design rules" for the national urban water supply and drainage industry. dai introduced the core technology of shenzhen qingquan sewage treatment, the sharp tool for upgrading the standard of sewage treatment plant - upflow denitrification deep bed filter. peer recognition.
dai said that the upflow denitrification deep bed filter is based on the theory of counter-granularity filtration. it absorbs the advantages of flip filter, non-clogging biological aerated filter and upflow filter. in the process of filtration, suspended flocs deposit in the direction of gravity and adhere to the surface of filter particles. it is adsorbed in reverse filtration. the layer is equivalent to the thickness of the whole filter bed, and its multi-layer filter material has a strong filtering effect. denitrification deep bed filter process is a new and efficient water treatment process, which is a sharp tool for upgrading the standard of sewage treatment plant.
upflow denitrification deep bed filter has the following technical characteristics:
1. good biological denitrification function tn < 5 mg/l;
2. good phosphorus removal function tp < 0.3 mg/l;
3. good suspended solids removal ability ss < 5 mg/l, turbidity < 2 ntu;
4. there is no need for nitrogen displacement device and no loss of filter material.
5. long filtration period (more than 48 hours);
6. carbon source dosage is reduced by more than 30%.
the filtration rate of the upflow denitrification deep bed filter in qingquan, shenzhen is as high as 6-9 m/h, which is much higher than that of the general denitrification deep bed filter (3-5 m/h). the water distribution and gas distribution system uses multi-function filter or filter head used in upflow filter to distribute water and gas, eliminating the traditional long handle filter head and filter plate, which not only distributes water evenly, but also solves the problem of easily blocked filter. upward flow filter is 500% more polluted than forward filter. ss, tn and tp are removed in one step without pre-efficient sedimentation tank, which greatly reduces the area occupied and the cost of investment, operation and maintenance. it is a better choice for upgrading the sewage treatment plant.
there are more than 100 application cases of upward flow filter in shenzhen qingquan. dai summarized and closed the application cases of upward flow filter for more detailed description, such as the upgrading and upgrading project of meishan municipal sewage treatment plant in sichuan province, the demonstration project of jiuquan sewage treatment plant in gansu province on the national "ninth five-year plan" project, and the sewage treatment plant in guxian county of shanxi province. standard renovation project, etc. relying on the real and effective data display and good transformation effect, it further proves the professionalism, high efficiency and feasibility of the upflow filter process in qingquan, shenzhen.
shenzhen qingquan has achieved good response in this national symposium on upgrading and renovation of municipal sewage treatment plants and innovative technology of rural sewage treatment. through this technical exchange, industry experts on the spot have a deeper understanding and understanding of the application of up-flow denitrification deep bed filter in shenzhen qingquan, and look forward to the application of up-flow filter. application prospect.
as a leader in water treatment industry, shenzhen qingquan has been focusing on scientific research and innovation, so far has won dozens of patents, many of the world's leading technology. in the future, shenzhen qingquan will continue to cultivate water treatment industry, adhere to technological research and development, adhere to technological innovation, so that china's water environment to a higher level, make water clearer and life more beautiful.
shenzhen qingquan is providing land-saving, time-saving, labor-saving and money-saving industrial operation solutions for the upgrading and renovation of water supply and drainage systems in cities around the world with its strong technological innovation capability and diversified series of products. over the past 23 years, we have been focusing on providing solutions and intelligent modular water treatment equipment for municipal wastewater treatment plants, such as standard expansion, quality increment of waterworks, advanced treatment of industrial wastewater, treatment of industrial aquaculture water, reclaimed water reuse and reclaimed water plants.
