Complete equipment for solving blockage and hardening of biological filter and matched system thereof and treatment process thereof
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A technology of biological filter and complete set of devices is applied in the field of water pollution control to achieve the effect of strong resistance to load impact
Pending Publication Date: 2020-05-19
安徽绿衡环保科技有限公司
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[0003] The purpose of the present invention is to solve the above problems, to provide a complete set of equipment and its treatment process to solve the blockage and hardening of the biological filter and its supporting system, so as to break through the current difficulties
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Embodiment 1
[0036] A sewage treatment plant in Henan Province raised the standard wastewater, with a treatment flow of 50,000m 3 / d, the pollutant index before the raw sewage after pretreatment (coarse / fine grid) enters the process device is: COD=200mg / L, BOD 5 =100mg / L, TN=35mg / L, SS=150mg / L, TP=2.5mg / L, nitrate=27mg / L; after this process, the effluent water quality index is: COD=35mg / L, BOD 5 =15 mg / L, SS=10 mg / L, TN=11 mg / L, TP=0.2 mg / L.
Embodiment 2
[0038] A municipal sewage treatment plant in Lu'an City, Anhui Province, with a treatment flow of 100,000m 3 / d, the pollutant index before the raw sewage after pretreatment (coarse / fine grid) enters this process is: COD=300mg / L, BOD 5 =140mg / L, SS=210mg / L, TN=40mg / L, nitrate=30mg / L; after being treated by this process device, the effluent water quality index is: COD=35mg / L, BOD 5 =8 mg / L, SS=10 mg / L, TN=12 mg / L.
Embodiment 3
[0040] A municipal sewage treatment plant in Hefei, Anhui Province, with a treatment flow of 100,000m 3 / d, the pollutant index before the raw sewage after pretreatment (coarse / fine grid) enters this process is: COD=300mg / L, BOD 5 =140mg / L, SS=210mg / L, TN=40mg / L, ammonia nitrogen=20mg / L; after being treated by this process device, the effluent water quality index is: COD=35mg / L, BOD 5 =8 mg / L, SS=10 mg / L, TN=22 mg / L.
[0041] The invention adopts a drum microfilter to solve the problem that during the backwashing process of the biological filter system, the biological ceramsite filter material is lost to the high-efficiency sedimentation tank, and the water inlet pipe of the high-efficiency sedimentation tank is blocked, the rapid mixing area, the flocculation reaction area, etc. Problems with normal operation. The inner water inlet orifice grille is used to completely solve the problem that the filter head of the traditional denitrification biological filter is easily block...
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Abstract
The invention discloses complete equipment for solving blockage and hardening of a biological filter and a matched system thereof and a treatment process of the complete equipment. The complete equipment is formed by sequentially connecting a rotary drum micro-filter, an efficient sedimentation tank, an inner water inlet pore plate grid and a denitrification biological filter in series. By adopting the complete equipment for treatment, the problem that in the backwashing process of a biological filter system, biological ceramsite filter materials run off to an efficient sedimentation tank, a water inlet pipeline, a rapid mixing area, a flocculation reaction area and the like of the efficient sedimentation tank are blocked, and consequently normal operation cannot be achieved is solved. Theinner water inlet pore plate grid is adopted, so that the problem that a filter head of a traditional denitrification biological filter is easy to block due to fibrous impurities is thoroughly solved. An inflow water flow meter, the denitrification biological filter and an online COD, nitrate nitrogen and total nitrogen multifunctional monitoring instruments are fully utilized to realize accurateaddition of a carbon source agent, the load impact resistance is higher, continuous and stable operation of the efficient sedimentation tank is guaranteed, stable and up-to-standard discharge of effluent water of the system is economically realized, and the complete equipment has great popularization and application values.
Description
technical field [0001] The invention belongs to the technical field of water pollution control, and specifically relates to a complete set of devices and a treatment process for solving the blockage and hardening of biological filters and their supporting systems Background technique [0002] At present, with the popularization of urban sewage treatment, the construction of sewage treatment plants is gradually covering the whole country. Biological aerated filter has been widely used in sewage denitrification treatment due to its small footprint, low maintenance cost, easy operation, convenient and flexible operation and management. However, with the gradual application of the biological aerated filter, the filter material of the biological filter is easy to lose during the backwashing process, and the backwashing wastewater enters the high-efficiency sedimentation tank in the front section, blocking the water inlet pipe of the high-efficiency sedimentation tank, and the rap...
Claims
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