on december 19, 2019, shenzhen qingquan was invited to participate in the annual drainage work meeting and sewage treatment technical product exchange meeting of the drainage professional committee of sichuan urban water supply and drainage association, and mr. dai wenquan, deputy general manager, made a special report on the application of upflow filter in water plant and sewage plant standard improvement.
before the formal start of the meeting, president dai visited neijiang no.1 sewage treatment plant and no.2 sewage treatment plant with all leaders and colleagues. the process adopted by the two sewage treatment plants is basically similar, with "multi-stage ao sedimentation denitrification filter" as the main treatment. the first and second sewage treatment plants are respectively upgrading and upgrading of 100000 m3 / d daily treatment capacity and 50000 m3 / d new (phase i) project. the effluent is subject to the water pollution discharge standard of minjiang and tuojiang river basins in sichuan province, and the surface quasi class iv (tn ≤ 10mg / l) is required for the effluent. during the visit, the owner introduced the process and operation of the sewage treatment plant in detail, and explained the questions of the field colleagues patiently.
on the afternoon of september 19, after relevant leaders of the ministry of housing and urban rural development of sichuan province and the drainage association summarized the work of the previous year and planned the work of the next year, president dai gave a speech on the application of upflow filter in the upgrading of water plants and sewage plants, introduced the products and technologies of shenzhen qingquan company in detail, and mainly shared the upgrading of upflow filter in water plants and sewage plants the application case.
mr. dai said that as a water treatment solution and water treatment equipment provider in municipal and industrial fields, shenzhen qingquan independently developed upflow filter technology has been widely used in water plant quality improvement increment, new construction, sewage treatment plant standard improvement and new construction. as an ideal filtration technology, upflow filter has not been applied in engineering practice for the key technical problems such as process and automatic control have not been solved. qingquan in shenzhen has broken through the technical bottleneck in this field and drafted the design code for upflow filter, which has become the standard of water supply and drainage industry in china.
the upflow filter technology is opposite to the normal gravity downflow filter in the flow direction. the suspended flocs precipitate under the gravity effect. the filter adsorption layer is equivalent to the thickness of the whole filter bed, and the multi-layer filter materials have strong filtering effect. therefore, the effect of "sedimentation and adsorption" of upflow filtration is more significant, and the amount of pollutant absorption is more than 5 times of that of downflow filter. at present, based on the technology of upward flow filter in qingquan, the non clogged biological aerated filter and upward flow denitrification deep bed filter have been successfully developed, which have been widely used in engineering practice. more than 500 projects have been successfully implemented in more than 30 provinces and cities in china.
mr. dai mainly introduced the project cases of qingquan in sichuan, including the expansion and upgrading project of meishan municipal sewage treatment plant and the upgrading project of pu'an sewage treatment plant in jiange county.
for the expansion and upgrading project of meishan municipal sewage treatment plant in sichuan province, the traditional civil structure is adopted, and the original effluent is subject to the first level b standard. the owner requires that the renovation plan shall not damage the green space of the plant area, do not move the original process pipeline of the plant area, and the new operation cost per ton of water shall not exceed 0.30 yuan. the project of biological aerated filter up flow denitrification deep bed filter was adopted in qingquan, shenzhen. no new process structure was added to ensure the original treatment capacity and the stability of the effluent is better than the first level a standard. the actual added operation cost is less than 0.12 yuan.
in the bid raising and reconstruction project of pu'an sewage treatment plant in jiange county, by adding coagulation pool, biological aerated filter and denitrification deep bed filter, the new process covers a small area, mainly using the open space between the existing structures in the plant area and the original structures, without occupying the second phase of the land, with low operation cost and stable effluent quality meeting the water pollution requirements of minjiang and tuojiang river basins in sichuan province dye emission standard (db51 / 2311-2016).
next, mr. dai briefly introduced the successful practice of shenzhen qingquan in the field of water supply, including xinjiang urumqi no.5 water plant reconstruction project, hami no.3 water plant reconstruction project, hengyang chengnan water plant improvement and reconstruction project, etc., which fully demonstrated the professionalism and stability of qingquan in the field of water supply treatment.
dai stressed that in addition to the traditional reinforced concrete construction mode, the upflow filter technology in qingquan, shenzhen has realized the integration of steel structure equipment, and can solve user problems more quickly and efficiently. qingquan's intelligent modular water treatment equipment has been successfully applied to the standard raising project of shenzhen henggang sewage treatment plant, shanwei east district sewage treatment emergency project, inner mongolia zhalantun water source project, etc. the emergency project of shanwei east sewage treatment plant is a new project in the whole process, which adopts the intelligent modular standard part product, 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 4 hours, 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, shenzhen, has an advantage in floor area, operation and maintenance cost and investment cost.
at the end of the meeting, mr. dai warmly invited the on-site representatives to visit the project site in qingquan, shenzhen, to exchange and learn from each other, to jointly build a better environment home and realize the vision of "making water cleaner and life more beautiful".
