CN101774687A - Method for treating water of polluted water source by using double-stage aeration bio-filter - Google Patents
Method for treating water of polluted water source by using double-stage aeration bio-filter Download PDFInfo
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- CN101774687A CN101774687A CN201010127968A CN201010127968A CN101774687A CN 101774687 A CN101774687 A CN 101774687A CN 201010127968 A CN201010127968 A CN 201010127968A CN 201010127968 A CN201010127968 A CN 201010127968A CN 101774687 A CN101774687 A CN 101774687A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a method for treating water of a polluted water source by using a double-stage aeration bio-filter, which relates to a method for treating the water of the polluted water source. The method solves the problems of easy blockage, easy production of secondary pollution and poor removal effect in the conventional method for treating the water of the polluted water source by using an aeration bio-filter process. The method comprises the following steps: allowing the water of the polluted water source to be treated to enter the double-stage aeration bio-filter, making the water flow upwards and aerating at the same time, controlling the hydraulic retention time so as to realize the treatment for the water of the polluted water source. When the water of the polluted water source is treated and the lightweight carrier of the lower stage is in a fluidized state, organic substances and intercepted suspensions can be efficiently removed, so the problem that the filler of the upper stage is easy to block due to small grain diameter is solved; meanwhile, because the natural clinoptilolite at the upper stage has large specific surface area, the removal rate of ammonia nitrogen is high, and the purpose of efficiently removing the ammonia nitrogen and the organic substances at the same time can be achieved; and moreover, the back flushing period is long and the secondary pollution cannot be caused.
Description
Technical field
The present invention relates to a kind of method of handling polluted source water.
Background technology
From later 1980s, polluted source introduce biological aerated filter process to water treatment, and, progressively become one of effective means of handling polluted raw because of the biological aerated filter process special advantages is subjected to people's attention more and more widely.Adopt the BAF of submerged filler, the specific surface area of filler is big than elastic filler, and not only material is cheap is easy to get, and treatment effect is better.Floor space is little owing to having for BAF, the removal ability of pollutent is strong, use range is wide, put into operation row flexibly, be easy to manage, characteristics such as strong shock resistance become the very fast new bio technology of a kind of development, also are the water technologies that tallies with the national condition.
The BAF development is rapid, and process form is constantly weeded out the old and bring forth the new, and wherein BIOCARBON, BIOFOR, BIOSTYR, BIOSMEDI, BIOPUR are several typical operation process of modern BAF, and application is worldwide all arranged.Generally single BAF can be finished functions such as carbonization, nitrated, denitrification, dephosphorization, but also have certain disadvantages: 1, adopt single-stage BAF method can not realize that autotrophic bacteria separates with the ecological niche of peculiar bacterium, reactor pollutent unit volume clearance is low, and if packing material size is little, easily stop up, packing material size is big, and specific surface area is little, poor removal effect; 2, adopt sinking biofilm packings such as conventional single haydite, zeolite, proportion is bigger, the filtering layer head loss is very big when therefore moving, about 1.2 ~ 2m causes system's whole process elevation head loss very big like this, therefore needs higher lifting energy consumption, need higher air-water backwashing energy consumption simultaneously, in addition, also be easy to stop up, easily cause secondary pollution; 3, adopt single light carrier filler, though remove organism, SS is effective, to the ammonia nitrogen removal weak effect, the bio-film colonization time is long; 4, adopt common twin-stage BAF method, owing to feed-water end organism, SS height, peculiar bacteria growing needs frequent back flushing rapidly, and backwashing water takes the easy contamination and plugging filler in upper strata to, cause suspended substance wrapping biological film, biomembrane activity is reduced, cause effluent quality to worsen; 5, nitrobacteria is long generation time, poor growth, and frequent back flushing influences the growth of nitrifier, causes ammonia nitrogen and organic removal not to take into account.
Summary of the invention
The objective of the invention is in order to solve the existing easy obstruction that exists when handling polluted source water, to cause the problem of secondary pollution and poor removal effect easily, and the method for utilizing double-stage aeration bio-filter to handle polluted source water is provided with biological aerated filter process.
The present invention utilizes double-stage aeration bio-filter to handle the method for polluted source water, in double-stage aeration bio-filter, carry out, described double-stage aeration bio-filter includes subordinate's packing layer and higher level's packing layer, the method of utilizing double-stage aeration bio-filter to handle polluted source water is carried out in accordance with the following methods: pending polluted source water directly enters double-stage aeration bio-filter from the water inlet pipe of bottom, move to the upper reaches, through subordinate's packing layer, higher level's packing layer, the while aeration, gas-water ratio is between 0.2:1 ~ 2:1, the hydraulic detention time of polluted source water is at 10～30min, wherein, subordinate's packing layer is every flushing in 7 ~ 15 days once, each mode of air water associating that all adopts is carried out back flushing, and first air purge 1 ~ 5min washes 1 ~ 5min again, and air purge intensity is 2 ~ 10L/sm
2, washing intensity is 5 ~ 15L/sm
2Higher level's packing layer is every flushing in 20 ~ 80 days once, all adopts the mode of air water associating to carry out back flushing at every turn, and first air purge 1 ~ 5min washes 1 ~ 5min again, and 5 air purge intensity are 2 ~ 10L/sm
2, washing intensity is 3 ~ 15L/sm
2, the filler in the described subordinate packing layer is the polyethylene filler, the filler in described higher level's filler is a zeolite.
Advantage of the present invention is as follows:
1, a part is fluidized state (being fluidized layer) in subordinate's packing layer of the double-stage aeration bio-filter lower floor that is used for handling polluted source water of the present invention, another part is suspension press filtration state (being the press filtration layer), the press filtration layer can be held back microbial film that fluidized layer comes off and the suspended substance in the water inlet, make subordinate's packing layer of lower floor can remove organism efficiently, hold back suspended substance, solved upper strata higher level's packing layer filler simultaneously because the little susceptible to plugging problem of particle diameter;
2, zeolite in higher level's packing layer can be brought into play absorption, ion-exchange and biological action simultaneously in the double-stage aeration bio-filter of the present invention, and the performance of maximum range removes the advantage of ammonia nitrogen, is not subjected to the influence of organism and SS, and specific surface area is big, and nitrated ability is strong;
3, subordinate's packing layer crown_interception and organic removal good in the double-stage aeration bio-filter of the present invention to suspended substance, greatly prolonged higher level's zeolite backwashing period, and (lower floor is subordinate's packing layer in levels, the upper strata is higher level's packing layer) between establish the back flushing intermediate drain installation, can prevent effectively that the dirt that subordinate's back flushing is washed away from bringing the higher level into, avoided stopping up the problem of zeolite filler, equipment of the present invention does not have blocking problem in water treatment procedure, can not cause secondary pollution to the polluted source water of handling.
4, treatment process of the present invention has realized de-carbon, nitrated splitting, and makes autotrophic bacteria and heterotrophic bacteria ecological niche relative separation, reaches the purpose that improves reactor pollutent unit volume clearance; The double-stage aeration bio-filter that utilizes of the present invention is handled polluted source water, and result shows that the inventive method has reached more than 90% ammonia-N removal rate in the polluted source water, and the clearance of permanganate index is more than 40%, UV
254Clearance is between 20% ~ 50%; And existing BAF only is about 80% to ammonia-N removal rate in the polluted source water, and the clearance of permanganate index only is 20% ~ 30%, UV
254Clearance only between 10% ~ 20%, disposal methods of the present invention is effective.
Description of drawings
Fig. 1 is the setting drawing of double-stage aeration bio-filter among the present invention.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment utilizes double-stage aeration bio-filter to handle the method for polluted source water, in double-stage aeration bio-filter, carry out, described double-stage aeration bio-filter includes subordinate's packing layer and higher level's packing layer, the method of utilizing double-stage aeration bio-filter to handle polluted source water is carried out in accordance with the following methods: pending polluted source water directly enters double-stage aeration bio-filter from the water inlet pipe of bottom, move to the upper reaches, through subordinate's packing layer, higher level's packing layer, the while aeration, gas-water ratio is between 0.2:1 ~ 2:1, the hydraulic detention time of polluted source water is at 10～30min, wherein, subordinate's packing layer is every flushing in 7 ~ 15 days once, each mode of air water associating that all adopts is carried out back flushing, and first air purge 1 ~ 5min washes 1 ~ 5min again, and air purge intensity is 2 ~ 10L/sm
2, washing intensity is 5 ~ 15L/sm
2Higher level's packing layer is every flushing in 20 ~ 80 days once, all adopts the mode of air water associating to carry out back flushing at every turn, and first air purge 1 ~ 5min washes 1 ~ 5min again, and air purge intensity is 2 ~ 10L/sm
2, washing intensity is 3 ~ 15L/sm
2, the filler in the described subordinate packing layer is the polyethylene filler, the filler in described higher level's filler is a zeolite.
Illustrate that in conjunction with Fig. 1 present embodiment is used to handle the double-stage aeration bio-filter of polluted source water, it comprises the first water inlet distribution device 2, the second water inlet distribution device 3, subordinate's packing layer 4, back flushing intermediate drain installation 5, supporting layer 6, higher level's packing layer 7, outlet sump 8, grid type stabilier 9, effluent trough 10, water inlet pipe 11, back flushing water inlet pipe 12, water producing pipe 13, flush out water pipe 14, back flushing inlet pipe 15, first aeration tube 16, second aeration tube 17, back-purge system 18 first aerating apparatuss 19 and second aerating apparatus 20, inclined plate sedimentation device 21, pump 22 and housing 23, the outlet of water inlet pipe 11 is communicated with the water-in of housing 23, centre in the housing 23 is provided with first aeration tube 16, second aeration tube 17 is set in the bottom of housing 23, fill subordinate's packing layer 4 between first aeration tube 16 and second aeration tube 17, near the below of first aeration tube 16 the first water inlet distribution device 2 is installed, the below of the first water inlet distribution device 2 is provided with back-purge system 18, the air outlet of back flushing inlet pipe 15 is communicated with the inlet mouth of back-purge system 18, near the below of second aeration tube 17 the second water inlet distribution device 3 is installed, the below of the second water inlet distribution device 3 is provided with back flushing intermediate drain installation 5, supporting layer 6 is installed in top near second aeration tube 17, the top of supporting layer 6 is higher level's packing layer 7, higher level's packing layer 7 tops are outlet sump 8, grid type stabilier 9 is set on outlet sump 8 sidewalls, the lower end of grid type stabilier 9 is connected with the lower end of inclined plate sedimentation device 21, the upper end of inclined plate sedimentation device 21 is connected with the upper end port of effluent trough 10, water producing pipe 13 is set on the diapire of effluent trough 10 and flushes out water pipe 14, the import that flushes out the outlet of water pipe 14 and back flushing water inlet pipe 12 is communicated with by pump 22, and the outlet of back flushing water inlet pipe 12 is communicated with import on the water inlet pipe 11; Form buffering water distributing area 1 between the housing 23 and the first water inlet distribution device 2.Wherein the particle diameter of higher level's packing layer 7 mesolites is 1 ~ 3mm, and the light carrier floating stuffing in subordinate's packing layer 4 is the polyethylene filler.
Present embodiment utilizes double-stage aeration bio-filter that polluted source water is handled, and result shows that present embodiment has reached more than 90% ammonia-N removal rate in the polluted source water, and the clearance of permanganate index is more than 40%, UV
254Clearance is between 20% ~ 50%; And existing BAF only is about 80% to ammonia-N removal rate in the polluted source water, and the clearance of permanganate index only is 20% ~ 30%, UV
254Clearance only between 10% ~ 20%, disposal methods of the present invention is effective.
Embodiment two: present embodiment and embodiment one are different is that the hydraulic detention time of polluted source water is 15 ~ 25min.Other step and parameter with specifically be that mode one is identical.
Embodiment three: what present embodiment was different with one of embodiment one to two is that gas-water ratio is between 0.5:1 ~ 1:1.Other step and parameter with specifically be that one of mode one to two is identical.
Embodiment four: what present embodiment was different with one of embodiment one to three is that subordinate's packing layer is every flushing in 10 days once, all adopts the mode of air water associating to carry out back flushing at every turn, and first air purge 2min washes 2min again, and air purge intensity is 5L/sm
2, washing intensity is 10L/sm
2Other step and parameter with specifically be that one of mode one to three is identical.
Embodiment five: what present embodiment was different with one of embodiment one to four is that higher level's packing layer is every flushing in 60 days once, all adopts the mode of air water associating to carry out back flushing at every turn, and first air purge 1min washes 2min again, and air purge intensity is 5L/sm
2, washing intensity is 12L/sm
2Other step and parameter with specifically be that one of mode one to four is identical.
Execute embodiment six with body: present embodiment utilizes double-stage aeration bio-filter to handle the method for polluted source water, in double-stage aeration bio-filter, carry out, described double-stage aeration bio-filter includes subordinate's packing layer and higher level's packing layer, the method of utilizing double-stage aeration bio-filter to handle polluted source water is carried out in accordance with the following methods: pending polluted source water directly enters double-stage aeration bio-filter from the water inlet pipe of bottom, move to the upper reaches, through subordinate's packing layer, higher level's packing layer, the while aeration, gas-water ratio is between 1.5:1, the hydraulic detention time of polluted source water is at 20min, wherein, subordinate's packing layer is every flushing in 10 days once, each mode of air water associating that all adopts is carried out back flushing, and first air purge 3min washes 3min again, and air purge intensity is 8L/sm
2, washing intensity is 10L/sm
2Higher level's packing layer is every flushing in 50 days once, all adopts the mode of air water associating to carry out back flushing at every turn, and first air purge 2min washes 3min again, and air purge intensity is 6L/sm
2, washing intensity is 9L/sm
2, the filler in the described subordinate packing layer is the polyethylene filler, the filler in described higher level's filler is a zeolite.
The setting drawing of employed double-stage aeration bio-filter as shown in Figure 1 in the present embodiment.
The double-stage aeration bio-filter that utilizes of present embodiment is handled polluted source water, and ammonia nitrogen content is 0.5～5mg/l in the wherein pending polluted source water, and permanganate index is 1～15mg/l, UV
254Be 0.02～1cm
-1, be 98% after utilizing double-stage aeration bio-filter to the polluted source water treatment to ammonia-N removal rate in the polluted source water, the clearance of permanganate index is 50%, UV
254Clearance is between 40%; Only is about 80% and adopt existing BAF to ammonia-N removal rate in the polluted source water, and the clearance of permanganate index only is 25%, UV
254Clearance only 15%.The method treatment effect of present embodiment is good.
Claims (5)
1. utilize double-stage aeration bio-filter to handle the method for polluted source water, in double-stage aeration bio-filter, carry out, described double-stage aeration bio-filter includes subordinate's packing layer and higher level's packing layer, it is characterized in that utilizing the method for double-stage aeration bio-filter processing polluted source water to carry out in accordance with the following methods: pending polluted source water directly enters double-stage aeration bio-filter from the water inlet pipe of bottom, move to the upper reaches, through subordinate's packing layer and higher level's packing layer, the while aeration, gas-water ratio is between 0.2:1 ~ 2:1, the hydraulic detention time of polluted source water is at 10～30min, wherein, subordinate's packing layer is every flushing in 7 ~ 15 days once, each mode of air water associating that all adopts is carried out back flushing, and first air purge 1 ~ 5min washes 1 ~ 5min again, and air purge intensity is 2 ~ 10L/sm
2, washing intensity is 5 ~ 15L/sm
2Higher level's packing layer is every flushing in 20 ~ 80 days once, all adopts the mode of air water associating to carry out back flushing at every turn, and first air purge 1 ~ 5min washes 1 ~ 5min again, and air purge intensity is 2 ~ 10L/sm
2, washing intensity is 3 ~ 15L/sm
2, the filler in the described subordinate packing layer is the polyethylene filler, the filler in described higher level's filler is a zeolite.
2. according to the described method of utilizing double-stage aeration bio-filter to handle polluted source water of claim 1, the hydraulic detention time that it is characterized in that polluted source water is 15 ~ 25min.
3. the method for utilizing double-stage aeration bio-filter to handle polluted source water according to claim 1 and 2 is characterized in that gas-water ratio is between 0.5:1 ~ 1:1.
4. the method for utilizing double-stage aeration bio-filter to handle polluted source water according to claim 3, it is characterized in that subordinate's packing layer is every flushing in 10 days once, each mode of air water associating that all adopts is carried out back flushing, and first air purge 2min washes 2min again, and air purge intensity is 5L/sm
2, washing intensity is 10L/sm
2
5. according to claim 1, the 2 or 4 described methods of utilizing double-stage aeration bio-filter to handle polluted source water, it is characterized in that higher level's packing layer is every flushing in 60 days once, each mode of air water associating that all adopts is carried out back flushing, and first air purge 1min washes 2min again, and air purge intensity is 5L/sm
2, washing intensity is 12L/sm
2
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092849A (en) * | 2011-01-07 | 2011-06-15 | 汤苏云 | New denitrification and backwashing process of biofilter |
| CN102502972A (en) * | 2011-11-01 | 2012-06-20 | 常州大学 | Method using downflow biological aerated filter to treat algal slurry press filtrate |
| CN103539255A (en) * | 2013-10-12 | 2014-01-29 | 华南理工大学 | Suspended ceramsite-active carbon double-layer filtering tank and method for applying filtering tank in treating raw water |
| CN103833127A (en) * | 2012-11-26 | 2014-06-04 | 杨志勇 | Novel ammonia-nitrogen biologic processor |
| CN105384236A (en) * | 2015-11-12 | 2016-03-09 | 广州市华绿环保科技有限公司 | Novel combined packing dual-bed aeration biofilter device |
| CN107500401A (en) * | 2017-09-18 | 2017-12-22 | 深圳市清研环境科技有限公司 | A kind of ecological filter and its application method for advanced treatment of wastewater |
| CN107585854A (en) * | 2017-09-21 | 2018-01-16 | 北京市自来水集团有限责任公司技术研究院 | The method of BAF, its construction method and the biofilter processing water using this method structure |
| CN110156161A (en) * | 2019-06-04 | 2019-08-23 | 北京博汇特环保科技股份有限公司 | The micro- heavy bed biochemical treatment apparatus of one kind and sewage water treatment method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092849A (en) * | 2011-01-07 | 2011-06-15 | 汤苏云 | New denitrification and backwashing process of biofilter |
| CN102092849B (en) * | 2011-01-07 | 2012-07-04 | 汤苏云 | New denitrification and backwashing process of biofilter |
| CN102502972A (en) * | 2011-11-01 | 2012-06-20 | 常州大学 | Method using downflow biological aerated filter to treat algal slurry press filtrate |
| CN102502972B (en) * | 2011-11-01 | 2013-08-14 | 常州大学 | Method using downflow biological aerated filter to treat algal slurry press filtrate |
| CN103833127A (en) * | 2012-11-26 | 2014-06-04 | 杨志勇 | Novel ammonia-nitrogen biologic processor |
| CN103539255A (en) * | 2013-10-12 | 2014-01-29 | 华南理工大学 | Suspended ceramsite-active carbon double-layer filtering tank and method for applying filtering tank in treating raw water |
| CN103539255B (en) * | 2013-10-12 | 2016-05-04 | 华南理工大学 | Suspension haydite-active carbon double layer filter and apply it and process the method for former water |
| CN105384236A (en) * | 2015-11-12 | 2016-03-09 | 广州市华绿环保科技有限公司 | Novel combined packing dual-bed aeration biofilter device |
| CN107500401A (en) * | 2017-09-18 | 2017-12-22 | 深圳市清研环境科技有限公司 | A kind of ecological filter and its application method for advanced treatment of wastewater |
| CN107585854A (en) * | 2017-09-21 | 2018-01-16 | 北京市自来水集团有限责任公司技术研究院 | The method of BAF, its construction method and the biofilter processing water using this method structure |
| CN107585854B (en) * | 2017-09-21 | 2020-05-12 | 北京市自来水集团有限责任公司技术研究院 | Biological aerated filter, construction method thereof and method for treating water by using biological aerated filter constructed by method |
| CN110156161A (en) * | 2019-06-04 | 2019-08-23 | 北京博汇特环保科技股份有限公司 | The micro- heavy bed biochemical treatment apparatus of one kind and sewage water treatment method |
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Application publication date: 20100714 |