CN102775020A - Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently - Google Patents
Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently Download PDFInfo
- Publication number
- CN102775020A CN102775020A CN2012102593553A CN201210259355A CN102775020A CN 102775020 A CN102775020 A CN 102775020A CN 2012102593553 A CN2012102593553 A CN 2012102593553A CN 201210259355 A CN201210259355 A CN 201210259355A CN 102775020 A CN102775020 A CN 102775020A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- phosphuret
- phosphorus
- soil
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 78
- 239000011574 phosphorus Substances 0.000 title claims abstract description 78
- 239000010865 sewage Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000000746 purification Methods 0.000 title claims abstract description 14
- 230000008929 regeneration Effects 0.000 title claims abstract description 14
- 238000011069 regeneration method Methods 0.000 title claims abstract description 14
- 230000008878 coupling Effects 0.000 title abstract description 4
- 238000010168 coupling process Methods 0.000 title abstract description 4
- 238000005859 coupling reaction Methods 0.000 title abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 239000001257 hydrogen Substances 0.000 claims description 70
- 229910052739 hydrogen Inorganic materials 0.000 claims description 70
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 65
- 239000002689 soil Substances 0.000 claims description 49
- 239000003795 chemical substances by application Substances 0.000 claims description 48
- 238000001179 sorption measurement Methods 0.000 claims description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000002351 wastewater Substances 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 238000005273 aeration Methods 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 239000003415 peat Substances 0.000 claims description 10
- 241000894006 Bacteria Species 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 235000010855 food raising agent Nutrition 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 8
- 238000004659 sterilization and disinfection Methods 0.000 claims description 8
- 239000006228 supernatant Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims description 6
- 241000195940 Bryophyta Species 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 238000005842 biochemical reaction Methods 0.000 claims description 6
- 239000004021 humic acid Substances 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 150000003016 phosphoric acids Chemical class 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 241000736285 Sphagnum Species 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- 239000002686 phosphate fertilizer Substances 0.000 claims description 4
- 238000000247 postprecipitation Methods 0.000 claims description 4
- 239000012286 potassium permanganate Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 229960001866 silicon dioxide Drugs 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000002594 sorbent Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000004131 EU approved raising agent Substances 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 6
- 229910000073 phosphorus hydride Inorganic materials 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 2
- 239000002957 persistent organic pollutant Substances 0.000 abstract 1
- 239000008213 purified water Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 13
- 238000011160 research Methods 0.000 description 12
- 239000012528 membrane Substances 0.000 description 9
- 238000002309 gasification Methods 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010012735 Diarrhoea Diseases 0.000 description 1
- 229910017958 MgNH Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 101150111781 PGL1 gene Proteins 0.000 description 1
- 206010037423 Pulmonary oedema Diseases 0.000 description 1
- 208000010513 Stupor Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910052816 inorganic phosphate Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 235000003170 nutritional factors Nutrition 0.000 description 1
- DJFBJKSMACBYBD-UHFFFAOYSA-N phosphane;hydrate Chemical compound O.P DJFBJKSMACBYBD-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 208000005333 pulmonary edema Diseases 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000002336 sorption--desorption measurement Methods 0.000 description 1
- 229910052567 struvite Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000011277 treatment modality Methods 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently. The method takes municipal sewage as a treatment object and includes: a, preliminary precipitation; b, phosphorous removal through conversion of the phosphorous in the sewage into phosphine; c, conversion of the phosphine; and d, recycling of purified water. According to the method, the municipal sewage is recycled, sludge after the sewage treatment is recycled completely, organic pollutants are removed, denitrification is achieved, and the technical gap of efficient conversion and usage of the phosphine at present is filled.
Description
Technical field
The present invention relates to WWT and recovery field, relate in particular to a kind of manifold type sewage purification regeneration treating method of efficient dephosphorization.
Background technology
Phosphorus as a kind of on the earth can not natural regenerated limited resources, in the global range ubiquity landing field phosphorus ore produce resource deficient day by day with water surrounding in phosphorus content too high and cause this contradiction of body eutrophication.The body eutrophication problem is one of current main environmental problem, has seriously restricted society and economic Sustainable development.Phosphorus is one of important factor of bringing out body eutrophication as nutritional factor.Wherein the phosphorus in the water body is mainly derived from sewage, washing composition and trade effluent, and the phosphorus of how removing effectively in the waste water is the hot issue of countries in the world environmental engineering investigator research always.The investigator has carried out a large amount of research to dephosphorization theory, technology and related process thereof both at home and abroad.But most of with consume ample resources, energy be cost with pollutant removals such as the nitrogen in the sewage, phosphorus, the shortcoming that exists " to consume energy " pollution to marry again.So it is the focus that scientific circles pay close attention to that the sewage dephosphorization technology that breaks traditions, the resource utilization of realization phosphor in sewage become.
In recent years with struvite (MAP:MgNH
4PO
46H
2O) form is recovered as the research focus.The dephosphorization technique that reclaims with the struvite form can be used for treatment of high concentration ammonia nitrogen waste water and high concentration phosphorus hydrochlorate waste water and contain ammonia nitrogen in high density and phosphate waste simultaneously, can also reduce the atmosphere greenhouse gases of some oxynitride types of generation in the waste water.But these research major side overweight the chemical method recycling; The chemical method dephosphorization is not only that medicament costs an arm and a leg, working cost is higher, a large amount of anionic residues are stayed in the water; Cause the salinity of water to increase; Cause secondary pollution, nitrogen, the phosphorus content of water outlet simultaneously all also do not reach emission standard, also need be used as further processing.
And biological phosphate-eliminating coupling phosphor resource process is the technological line of economical rationality, and this technology also becomes possibility gradually.When the total amount migration and variation rule of research sewage work phosphorus, find its total phosphorus first with a toll of 30%-45%, and confirmed that the loss of phosphorus is many with gaseous state phosphuret-(t)ed hydrogen form entering atmosphere.And then all detect phosphuret-(t)ed hydrogen, even in the biosphere in the South Pole, the existence of phosphuret-(t)ed hydrogen is arranged all in places such as wetland, refuse landfill, plants.Existing research shows that the phosphorus in the sewage possibly under the anaerobion effect, be reduced generation phosphuret-(t)ed hydrogen as the precursor of phosphuret-(t)ed hydrogen fully, exists with free state, matrix ADSORPTION STATE phosphuret-(t)ed hydrogen (matrix-bound) form.Early stage the investigation of phosphorus in the anaerobic waste water treating processes is found according to us, wherein total phosphorus loss up 78%.These find to sewage dephosphorization and phosphorus recovery working cycle thinking to be provided, and it shows that not only in the sewage dephosphorization process, phosphorus can be removed with gaseous form, show that also phosphorus can carry out resource utilization with gaseous form and reclaim in working cycle.So the discovery of phosphuret-(t)ed hydrogen in sewage treatment process caused people's common concern at once, how does it produce in sewage dephosphorization technology? How does it participate in the removal and the resource utilization circulation of sewage phosphorus? Phosphuret-(t)ed hydrogen produce laggardly go into how water body, atmosphere are collected, resource utilization? Have important scientific meaning and application prospect for the anaerobe removal that discloses sewage phosphorus, resource utilization mechanism, the removal of exploitation sewage phosphorus, round-robin new way.
In the biomass geochemistry circulation of phosphorus, think always that for a long time gaseous state phosphuret-(t)ed hydrogen is non-existent at nature.Up to 1988, the investigator found that first the phosphorus of sewage work's loss is to get into atmospheric with gaseous state phosphuret-(t)ed hydrogen form.Subsequently; In refuse landfill, plant, river and organism, detected the phosphuret-(t)ed hydrogen that exists with the free state form successively; Along with phosphuret-(t)ed hydrogen is detected in varying environment one after another, phosphuret-(t)ed hydrogen finally is confirmed to be a kind of trace gas that extensively is present in the atmosphere.The discovery of phosphuret-(t)ed hydrogen is the important supplement to the phosphorus Cyclical Theory in the physical environment, has changed the phosphorus of thinking in the past in the atmosphere and is by attached to the incorrect view that inorganic phosphate constituted on air participates or the depositing dust particle.Therefore, in the biomass geochemistry circulation of phosphorus, must consider existence and the status and the effect of phosphuret-(t)ed hydrogen.Because phosphuret-(t)ed hydrogen content is very little in the physical environment; Receive condition effect such as sample collecting, preservation, enrichment and detection technique; Early stage analytical procedure and technique means are difficult to realize the quantitatively determined to trace phosphuret-(t)ed hydrogen in the environment, and the research of phosphuret-(t)ed hydrogen behavior is not also extensively carried out in the relevant environment.
Phosphuret-(t)ed hydrogen is a kind of poisonous and active reducing gas that can be carcinogenic, human body suck just can cause on a small quantity feeling sick, symptoms such as vomiting, uncomfortable in chest, diarrhoea, can cause pulmonary edema even stupor dead when serious.So the discovery of this compound in environment causes people's common concern at once, setting up sensitive reliable analytical method is the prerequisite of carrying out phosphuret-(t)ed hydrogen research in the environment.
Therefore study phosphorus in sewage dephosphorization anaerobic reactor system and the technology thereof how to change into phosphuret-(t)ed hydrogen, phosphuret-(t)ed hydrogen how about to the waste water water body discharge, how it produces in reactor drum and finally how to stablize problem such as resource utilization; And then in the announcement waste water phosphorus conversion process with remove mechanism; Set up the resource utilization process engineering for regenerating; To widening the range of application of sewage dephosphorization biotechnology, the technology that changes tradition " consuming energy " is significant.
Existing research shows that lake, wetland, rice terrace are one of source of gaseous state phosphuret-(t)ed hydrogen in the atmosphere, also is the most important remittance of gaseous state phosphuret-(t)ed hydrogen.Gassmann detects PH first in Hamburg, Germany port and German gulf bottom unfiltered water body
3, its concentration is up to 12.5 pgL-1, and identical water body does not detect PH after filtering
3The applicant all detects PH in Taihu Lake and filtration of oolong pool and unfiltered water body
3Exist, do not filter lake water than the PH that filters in the lake water
3Content is high 2～14 times, PH in the lake water
3Vertical change very little, also find simultaneously in the concentration ratio lake water of ADSORPTION STATE phosphuret-(t)ed hydrogen in the settling concentration up to 103-105 doubly.These investigators all think PH in the water body
3Mainly the form with matrix combined hydrogen phosphide (MBP) exists.The typical case cultures the matrix combined hydrogen phosphide that detects ng/kg (dry weight) order of magnitude in the settling of marine site to the bright grade of Yu Zhi in 2002 in the Jiaozhou Bay first, and its concentration reaches as high as 685ng/kg.Female clear woods etc. been has also has been investigated and analysed the content and the distribution of Jiaozhou Bay's settling mesostroma combined hydrogen phosphide, and detected result shows that the phosphuret-(t)ed hydrogen maximum concentration reaches 43.75ng/kg (dry weight).The generation of sewage phosphuret-(t)ed hydrogen, sludge absorption not only directly influence dephosphorization efficiency by using, and directly and its resource utilization process closely related, therefore, necessary mud mesostroma combined hydrogen phosphide is furtherd investigate.
In the sewage phosphorus treating processes, the gaseous state phosphuret-(t)ed hydrogen that generations such as anaerobion discharge at first will reach the adsorption-desorption balance with mud before being discharged into atmosphere, and the excessive gaseous state phosphuret-(t)ed hydrogen that is not adsorbed is just discharged into the atmosphere.Phosphor in sewage can generate phosphuret-(t)ed hydrogen through the reductive action of mikrobe, and the phosphuret-(t)ed hydrogen in the sewage is easy to be adsorbed on the mud granule, forms matrix combined hydrogen phosphide (MBP).Therefore; Carry out the desorption of mud mesostroma combined hydrogen phosphide in a deep going way; For the collection of phosphor in sewage hydrogen, stablize resource utilization research, seek the approach that improves the sewage phosphorus clearance, make up the process for reclaiming of phosphor in sewage under the anaerobic condition; Develop continuable WWT, the resource recovery technology all has important meaning, the present domestic and international rarely seen report of research of this respect.
Phosphorus is one of most important element in the soil.In China, 74% arable soil lacks phosphorus, and the phosphorus in the soil more than 95% is invalid form, and farm crop are difficult to directly absorb, so the bioavailability of phosphorus is the focus that scientific circles pay close attention to always.Phosphuret-(t)ed hydrogen is easy to be adsorbed on the soil particle, forms the matrix combined hydrogen phosphide, and Han etc. discover that 0.74% of total phosphorus in the soil is converted into phosphuret-(t)ed hydrogen and is stored in the soil, and the phosphuret-(t)ed hydrogen of generation is very easily by the adsorbed storage of soil particle.In the resource utilization process of sewage dephosphorization coupling phosphorus; If can the phosphorus in the sewage be converted into phosphuret-(t)ed hydrogen; Through the height absorption storage of phosphuret-(t)ed hydrogen in the adsorption by soil agent; And be administered in the soil, the phosphuret-(t)ed hydrogen in the adsorption by soil agent will change the reactive phosphate that is prone to by the crop absorption utilization into, show important especially for phosphorus restriction soil.Sustainable development for promoting agricultural is significant, and the research report of this respect is not arranged at present both at home and abroad as yet.
In order to overcome the following problem that present spoil disposal dephosphorization major technique exists: one, sludge discharge is big, and it is big that excess sludge is disposed difficulty.Effectively transform the technological blank of this respect to present phosphuret-(t)ed hydrogen, proposed the present invention.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of manifold type sewage purification regeneration treating method of efficient dephosphorization is provided, concrete technical scheme is following.
A kind of manifold type sewage purification regeneration treating method of efficient dephosphorization may further comprise the steps:
A) preliminary sedimentation:
The sewage that sewage conduct is collected filters by coarse rack and gets into the sand setting collecting-tank after removing solid sundries, and is logical
Cross and get into the adjustment pond after water pump filters a small amount of silt particle with sand setting water collecting basin sewage extraction lifting through fine fack,, adorn boring aeration pipe water flowing aeration and the stirring water body that lays, keep water quality relatively stable to the bottom, pond through the ejector of water circulating pump and connection;
B) phosphorus in the sewage is converted into the phosphuret-(t)ed hydrogen dephosphorization:
Through being concentrated, aeration rate is distributed in film-bioreactor (Membrane Bio-Reactor; MBR) below, film district; The local aerobic zone that forms dissolved oxygen concentration greater than 2.02mg/L in said film district, other regional dissolved oxygen concentration be less than 1.02mg/L, and through forming circulation flow field form (perhaps adding recycle pump through stirring); Form the aerobic-oxygen-anaerobic of the holding concurrently flow field form that alternately distributes, realize the biochemical reaction environment of aerobic suction phosphorus-anaerobic phosphorus release; Sludge concentration is 15000～25000mg/L in the said film-bioreactor through keeping, and has improved the autodigestion speed of mud, has promoted amphimicrobe digestion death to release phosphorus; Phosphorus is after anaerobic zone is discharged by mikrobe; Under the effect of phosphoric acid salt reduction bacterium in said film-bioreactor; Be converted into phosphuret-(t)ed hydrogen and discharge, and deposit air reservoir in through pipeline, after the water precipitation 60-80 after the above-mentioned dephosphorization minute, get supernatant through the aerating system stripping;
C) conversion of phosphuret-(t)ed hydrogen:
Phosphuret-(t)ed hydrogen in the resulting air reservoir of step b) is inserted sludge sump and stirring with pipeline, and phosphuret-(t)ed hydrogen is easy to be adsorbed on the mud granule, forms matrix combined hydrogen phosphide MBP; Add the adsorption by soil agent again; Through the height absorption storage of phosphuret-(t)ed hydrogen in the adsorption by soil agent, be administered in the soil, the phosphuret-(t)ed hydrogen in the adsorption by soil agent will change the reactive phosphate that is prone to by the crop absorption utilization into; Be phosphate fertilizer, be used for the soil that scarce phosphorus soil or phosphorus exist with invalid form;
The recovery of d) purifying waste water:
The supernatant that step b) obtains is sent into sterilization pool through pipeline, through short mix method cholorination, i.e. Youxiaolin or chlorinated lime or chlorine tablets sterilization, postprecipitation 1-1.2 hour, the residual impurity in the water was removed in smart filter, obtains handling purifying waste water of recovery.
Preferably, its said adsorption by soil agent can also be by 75 ~ 92% oxygenants, 5 ~ 20% by mass percentage
Raising agent, 0 ~ 2% sorbent material, 0 ~ 2% anti-hard caking agent, 0 ~ 2% dispersion agent are formed;
Further, the said adsorption by soil agent mixture that is the peat composed of rotten mosses and humic acid.The weight ratio blending ratio of the peat composed of rotten mosses and humic acid is 1:1 in the said adsorption by soil agent.Said oxygenant is a potassium permanganate;
Said raising agent is wood chip or WHITE CARBON BLACK; Said anti-hard caking agent is a Graphite Powder 99; Said dispersion agent is silicon-dioxide and flyash.
Preferably, its said adsorption by soil agent can also be to be mixed by 25～33% meadow peats, 20～33% sphagnum peats and 25～50% nitrogenous fertilizer by mass percentage.
Preferably, its said anti-hard caking agent can also be to be mixed by 80～82% Triple Pressed Stearic Acid, 15 ~ 22% industrial paraffins by mass percentage.
Compared with prior art, the present invention has following advantage and effect:
The present invention is optimized through aerating system is laid, and several kinds of aeration intensities are distributed in the membrane module bottom, and forming part, film district is aerobic zone, and inhaling phosphorus for microorganism aerobic provides the biochemical reaction condition; Form rises to top, film district to sewage from the film district through the circulation flow field because dissolved oxygen utilizes by mikrobe in middle and lower part, film district fast, on top, film district and the membrane module outside basically form aerobic area, mikrobe is in the aerobic area releases phosphorus; Crown_interception through microfiltration membrane; Realized the enrichment and growth of phosphuret-(t)ed hydrogen reduction bacterium, for the gasification finish of phosphorus provides condition, through constructing the gasification finish biochemical reaction environment that is fit to phosphorus in system; Realize the new removing method of phosphorus, avoided the traditional technology route of traditional spoil disposal dephosphorization.
Overcome the traditional biological dephosphorization sewage treatment process for realization phosphorus is the release of phosphorus at double oxygen condition, prevent the accumulation of phosphorus in mud, need to adopt the oxygen+aerobic combined treatment modality of holding concurrently, structures split, and take up an area of greatly the defective that operational management is complicated.
Overcome the defective that the sludge disposal difficulty is big, occupation of land is big that existing routine biochemistry treatment process and membrane biological reactor process exist through the spoil disposal dephosphorization.
Embodiment
Embodiment 1
A kind of manifold type sewage purification regeneration treating method of efficient dephosphorization may further comprise the steps:
A) preliminary sedimentation
The sewage that sewage conduct is collected filters by coarse rack and gets into the sand setting collecting-tank after removing solid sundries, and is logical
Cross and get into the adjustment pond after water pump filters a small amount of silt particle with sand setting water collecting basin sewage extraction lifting through fine fack,, adorn boring aeration pipe water flowing aeration and the stirring water body that lays, keep water quality relatively stable to the bottom, pond through the ejector of water circulating pump and connection;
B) phosphorus in the sewage is converted into the phosphuret-(t)ed hydrogen dephosphorization
Through being concentrated, aeration rate is distributed in film-bioreactor (Membrane Bio-Reactor; MBR) below, film district; The local aerobic zone that forms dissolved oxygen concentration greater than 2.02mg/L in said film district, other regional dissolved oxygen concentration be less than 1.02mg/L, and through forming circulation flow field form (perhaps adding recycle pump through stirring); Form the aerobic-oxygen-anaerobic of the holding concurrently flow field form that alternately distributes, realize the biochemical reaction environment of aerobic suction phosphorus-anaerobic phosphorus release; Sludge concentration is 15000～25000mg/L in the said film-bioreactor through keeping, and has improved the autodigestion speed of mud, has promoted amphimicrobe digestion death to release phosphorus; Phosphorus is after anaerobic zone is discharged by mikrobe; Under the effect of phosphoric acid salt reduction bacterium in said film-bioreactor; Be converted into phosphuret-(t)ed hydrogen and discharge, and deposit air reservoir in through pipeline, the water precipitation after the above-mentioned dephosphorization is got supernatant after 60 minutes through the aerating system stripping;
Through the crown_interception of microfiltration membrane, realized the enrichment and growth of phosphuret-(t)ed hydrogen reduction bacterium in system, for the gasification finish of phosphorus provides condition, forms following continuous biochemical and react:
The absorption of phosphorus:
ADP+H
3PO
4+ energy → ATP+H
2O (aerobic environment)
The release of phosphorus:
ATP+H
2O → ADP+H
3PO
4+ energy (anaerobic environment)
The gasification of phosphorus transforms:
H
3PO
4+ phosphoric acid salt reduction bacterium → phosphuret-(t)ed hydrogen (anaerobic environment)
C) conversion of phosphuret-(t)ed hydrogen
Phosphuret-(t)ed hydrogen in the resulting air reservoir of step b) is inserted sludge sump and stirring with pipeline; Phosphuret-(t)ed hydrogen is easy to be adsorbed on the mud granule; Form matrix combined hydrogen phosphide (MBP: matrix-bound phosphine), add the adsorption by soil agent again, through the height absorption storage of phosphuret-(t)ed hydrogen in the adsorption by soil agent; Be administered in the soil; Phosphuret-(t)ed hydrogen in the adsorption by soil agent will change the reactive phosphate that is prone to by the crop absorption utilization into, and promptly phosphate fertilizer is used for the soil that scarce phosphorus soil or phosphorus exist with invalid form; Said adsorption by soil agent is the mixture of the peat composed of rotten mosses and humic acid, and blending ratio is 1:1;
The recovery of d) purifying waste water
The supernatant that step b) obtains is sent into sterilization pool through pipeline, through short mix method cholorination, i.e. Youxiaolin or chlorinated lime or chlorine tablets sterilization, postprecipitation 1 hour, the residual impurity in the water is removed in smart filter, obtains handling purifying waste water of recovery.NO
2 -
Effluent quality such as following table:
Its said adsorption by soil agent can also be by 75% oxygenant, 20% by mass percentage
Raising agent, 1% sorbent material, 2% anti-hard caking agent, 2% dispersion agent are formed; Said oxygenant is a potassium permanganate; Said raising agent is wood chip or WHITE CARBON BLACK; Said anti-hard caking agent is a Graphite Powder 99; Said dispersion agent is silicon-dioxide and flyash.
Its said adsorption by soil agent by mass percentage can also be to be mixed by 33% meadow peat, 33% sphagnum peat and 34% nitrogenous fertilizer.Its said anti-hard caking agent can also be to be mixed by 82% Triple Pressed Stearic Acid, 18% industrial paraffin by mass percentage.
Embodiment 2
A kind of manifold type sewage purification regeneration treating method of efficient dephosphorization, this technology may further comprise the steps:
A) preliminary sedimentation
The sewage that sewage conduct is collected filters by coarse rack and gets into the sand setting collecting-tank after removing solid sundries, and is logical
Cross and get into the adjustment pond after water pump filters a small amount of silt particle with sand setting water collecting basin sewage extraction lifting through fine fack,, adorn boring aeration pipe water flowing aeration and the stirring water body that lays, keep water quality relatively stable to the bottom, pond through the ejector of water circulating pump and connection;
B) phosphorus in the sewage is converted into the phosphuret-(t)ed hydrogen dephosphorization
Through being concentrated, aeration rate is distributed in film-bioreactor (Membrane Bio-Reactor; MBR) below, film district; The local aerobic zone that forms dissolved oxygen concentration greater than 2.02mg/L in said film district, other regional dissolved oxygen concentration be less than 1.02mg/L, and through forming circulation flow field form (perhaps adding recycle pump through stirring); Form the aerobic-oxygen-anaerobic of the holding concurrently flow field form that alternately distributes, realize the biochemical reaction environment of aerobic suction phosphorus-anaerobic phosphorus release; Sludge concentration is 15000～25000mg/L in the said film-bioreactor through keeping, and has improved the autodigestion speed of mud, has promoted amphimicrobe digestion death to release phosphorus; Phosphorus is after anaerobic zone is discharged by mikrobe; Under the effect of phosphoric acid salt reduction bacterium in said film-bioreactor; Be converted into phosphuret-(t)ed hydrogen and discharge, and deposit air reservoir in through pipeline, the water precipitation after the above-mentioned dephosphorization is got supernatant after 80 minutes through the aerating system stripping;
Through the crown_interception of microfiltration membrane, realized the enrichment and growth of phosphuret-(t)ed hydrogen reduction bacterium in system, for the gasification finish of phosphorus provides condition, forms following continuous biochemical and react:
The absorption of phosphorus:
ADP+H
3PO
4+ energy → ATP+H
2O (aerobic environment)
The release of phosphorus:
ATP+H
2O → ADP+H
3PO
4+ energy (anaerobic environment)
The gasification of phosphorus transforms:
H
3PO
4+ phosphoric acid salt reduction bacterium → phosphuret-(t)ed hydrogen (anaerobic environment)
C) conversion of phosphuret-(t)ed hydrogen
Phosphuret-(t)ed hydrogen in the resulting air reservoir of step b) is inserted sludge sump and stirring with pipeline, and phosphuret-(t)ed hydrogen is easy to be adsorbed on the mud granule, forms matrix combined hydrogen phosphide MBP; Add the adsorption by soil agent again; Through the height absorption storage of phosphuret-(t)ed hydrogen in the adsorption by soil agent, be administered in the soil, the phosphuret-(t)ed hydrogen in the adsorption by soil agent will change the reactive phosphate that is prone to by the crop absorption utilization into; Be phosphate fertilizer, be used for the soil that scarce phosphorus soil or phosphorus exist with invalid form; Said adsorption by soil agent is the mixture of the peat composed of rotten mosses and humic acid, and blending ratio is 1:1;
The recovery of d) purifying waste water
The supernatant that step b) obtains is sent into sterilization pool through pipeline, through short mix method cholorination, i.e. Youxiaolin or chlorinated lime or chlorine tablets sterilization, postprecipitation 1 hour, the residual impurity in the water is removed in smart filter, obtains handling purifying waste water of recovery.
Effluent quality such as following table:
Its said adsorption by soil agent by mass percentage can also be made up of 88% oxygenant, 7% raising agent, 1% sorbent material, 2% anti-hard caking agent, 2% dispersion agent; Said oxygenant is a potassium permanganate; Said raising agent is wood chip or WHITE CARBON BLACK; Said anti-hard caking agent is a Graphite Powder 99; Said dispersion agent is silicon-dioxide and flyash.
Its said adsorption by soil agent by mass percentage can also be to be mixed by 25% meadow peat, 25% sphagnum peat and 50% nitrogenous fertilizer.Its said anti-hard caking agent can also be to be mixed by 80% Triple Pressed Stearic Acid, 20% industrial paraffin by mass percentage.
It should be noted that all numerical value intervals of this patent can be realized, because length is limit, enumerate the partial parameters value at this.What should explain at last is: above embodiment is only in order to the technical scheme of explanation this patent, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (6)
1. the manifold type sewage purification regeneration treating method of an efficient dephosphorization is characterized in that this technology may further comprise the steps:
A) preliminary sedimentation:
The sewage that sewage conduct is collected filters by coarse rack and gets into the sand setting collecting-tank after removing solid sundries, and is logical
Cross water pump and sand setting water collecting basin sewage extract is promoted get into the adjustment pond after filtering silt particle through fine fack, through water circulating pump and the ejector that is connected with water circulating pump, the boring aeration pipe water flowing aeration and the stirring water body that lay bottom the adjustment pond;
B) phosphorus in the sewage is converted into the phosphuret-(t)ed hydrogen dephosphorization:
Through aeration rate being concentrated the below, film district that is distributed in film-bioreactor; The local aerobic zone that forms dissolved oxygen concentration greater than 2.02 (mg/L) in said film district; Other regional dissolved oxygen concentration is less than 1.02 (mg/L); And, forms aerobic-double oxygen-anaerobic flow field form that alternately distributes through forming circulation flow field form, realize the biochemical reaction environment of aerobic suction phosphorus-anaerobic phosphorus release; Sludge concentration is 15000～25000 (mg/L) in the said film-bioreactor through keeping; Phosphorus is after anaerobic zone is discharged by mikrobe; Under the effect of phosphoric acid salt reduction bacterium in said film-bioreactor; Be converted into phosphuret-(t)ed hydrogen and discharge, and deposit air reservoir in through pipeline, after the water precipitation 60-80 after the above-mentioned dephosphorization minute, get supernatant through the aerating system stripping;
C) conversion of phosphuret-(t)ed hydrogen:
Phosphuret-(t)ed hydrogen in the resulting air reservoir of step b) is inserted sludge sump and stirring with pipeline, and phosphuret-(t)ed hydrogen is easy to be adsorbed on the mud granule, forms matrix combined hydrogen phosphide MBP; Add the adsorption by soil agent again; Through the absorption storage of phosphuret-(t)ed hydrogen in the adsorption by soil agent, be administered in the soil, the phosphuret-(t)ed hydrogen in the adsorption by soil agent will change the reactive phosphate that is utilized by crop absorption into; Be phosphate fertilizer, be used for the soil that scarce phosphorus soil or phosphorus exist with invalid form;
The recovery of d) purifying waste water
The supernatant that step b) obtains is sent into sterilization pool through pipeline, through short mix method cholorination, i.e. Youxiaolin or chlorinated lime or chlorine tablets sterilization, postprecipitation 1-1.2 hour, the residual impurity in the water was removed in smart filter, obtains handling purifying waste water of recovery.
2. the manifold type sewage purification regeneration treating method of a kind of efficient dephosphorization according to claim 2 is characterized in that said adsorption by soil agent is the mixture of the peat composed of rotten mosses and humic acid.
3. the manifold type sewage purification regeneration treating method of a kind of efficient dephosphorization according to claim 3 is characterized in that the weight ratio blending ratio of the peat composed of rotten mosses and humic acid is 1:1 in the said adsorption by soil agent.
4. according to the manifold type sewage purification regeneration treating method of the described a kind of efficient dephosphorization of claim 1-3; It is characterized in that by mass percentage said adsorption by soil agent is made up of 75 ~ 92% oxygenants, 5 ~ 20% raising agents, 0 ~ 2% sorbent material, 0 ~ 2% anti-hard caking agent, 0 ~ 2% dispersion agent; Said oxygenant is a potassium permanganate; Said raising agent is wood chip or WHITE CARBON BLACK; Said anti-hard caking agent is a Graphite Powder 99; Said dispersion agent is silicon-dioxide and flyash.
5. the manifold type sewage purification regeneration treating method of a kind of efficient dephosphorization according to claim 4, it is characterized in that by
The said anti-hard caking agent of mass percent meter is mixed by 80～82% Triple Pressed Stearic Acid, 15 ~ 22% industrial paraffins.
6. the manifold type sewage purification regeneration treating method of a kind of efficient dephosphorization according to claim 1, it is characterized in that by
The said adsorption by soil agent of mass percent meter is mixed by 25～33% meadow peats, 20～33% sphagnum peats and 25～50% nitrogenous fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259355.3A CN102775020B (en) | 2012-07-25 | 2012-07-25 | Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259355.3A CN102775020B (en) | 2012-07-25 | 2012-07-25 | Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102775020A true CN102775020A (en) | 2012-11-14 |
| CN102775020B CN102775020B (en) | 2014-09-10 |
Family
ID=47120161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210259355.3A Expired - Fee Related CN102775020B (en) | 2012-07-25 | 2012-07-25 | Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102775020B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502658A (en) * | 2016-01-07 | 2016-04-20 | 沈阳建筑大学 | Facultative flat sheet membrane gasification phosphorous removal device and method |
| CN106430365A (en) * | 2016-11-28 | 2017-02-22 | 辽宁石油化工大学 | Zero-valent iron activator slow-release candle for in-situ restoration of underground water |
| CN106477710A (en) * | 2016-11-28 | 2017-03-08 | 辽宁石油化工大学 | A kind of in-situ oxidation repairs the Zero-valent Iron activation persulfate sustained release candle of underground water |
| CN106477709A (en) * | 2016-11-28 | 2017-03-08 | 辽宁石油化工大学 | A kind of in-situ oxidation repairs the ferrous activation persulfate sustained release candle of underground water |
| CN106477648A (en) * | 2016-11-28 | 2017-03-08 | 辽宁石油化工大学 | A kind of persulfate for in-situ remediation of underground water is sustained candle |
| WO2017035889A1 (en) * | 2015-09-01 | 2017-03-09 | Jiangxi Jdl Environmental Protection Co., Ltd. | Method and system for removing phosphorus by gasification |
| CN106517481A (en) * | 2016-11-28 | 2017-03-22 | 辽宁石油化工大学 | Ferrous activator controlled-release candle used for in-situ remediation of underground water |
| CN108178296A (en) * | 2018-02-01 | 2018-06-19 | 昆明理工大学 | A kind of method for strengthening anaerobic waste water biological phosphate-eliminating |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240499A (en) * | 2011-07-15 | 2011-11-16 | 田琳 | Composite absorbing agent for processing hydrogen phosphide gas and preparation method thereof |
-
2012
- 2012-07-25 CN CN201210259355.3A patent/CN102775020B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240499A (en) * | 2011-07-15 | 2011-11-16 | 田琳 | Composite absorbing agent for processing hydrogen phosphide gas and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 孙家寿: "一种优良的废水处理剂-腐殖酸系吸附剂", 《化工环保》, vol. 5, no. 6, 31 December 1985 (1985-12-31), pages 350 * |
| 张颖等: "废水中磷的去除研究进展", 《中国沼气》, vol. 23, no. 3, 31 December 2005 (2005-12-31) * |
| 王卓艺: "污水处理系统中磷的转化途径", 《科技情报开发与经济》, vol. 17, no. 32, 31 December 2007 (2007-12-31) * |
| 蒋克彬等: "《膜生物反应器的应用》", 28 February 2012, article "膜生物反应器概述", pages: 1-2 - 1-1 * |
| 邵嘉慧等: "《膜生物反应器-在污水处理中的研究和应用》", 31 May 2012, article "MBR对磷的去除特性", pages: 56 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017035889A1 (en) * | 2015-09-01 | 2017-03-09 | Jiangxi Jdl Environmental Protection Co., Ltd. | Method and system for removing phosphorus by gasification |
| CN105502658A (en) * | 2016-01-07 | 2016-04-20 | 沈阳建筑大学 | Facultative flat sheet membrane gasification phosphorous removal device and method |
| CN105502658B (en) * | 2016-01-07 | 2017-12-29 | 沈阳建筑大学 | And oxygen Flat Membrane gasification dephosphorization apparatus and its method |
| CN106430365A (en) * | 2016-11-28 | 2017-02-22 | 辽宁石油化工大学 | Zero-valent iron activator slow-release candle for in-situ restoration of underground water |
| CN106477710A (en) * | 2016-11-28 | 2017-03-08 | 辽宁石油化工大学 | A kind of in-situ oxidation repairs the Zero-valent Iron activation persulfate sustained release candle of underground water |
| CN106477709A (en) * | 2016-11-28 | 2017-03-08 | 辽宁石油化工大学 | A kind of in-situ oxidation repairs the ferrous activation persulfate sustained release candle of underground water |
| CN106477648A (en) * | 2016-11-28 | 2017-03-08 | 辽宁石油化工大学 | A kind of persulfate for in-situ remediation of underground water is sustained candle |
| CN106517481A (en) * | 2016-11-28 | 2017-03-22 | 辽宁石油化工大学 | Ferrous activator controlled-release candle used for in-situ remediation of underground water |
| CN106477648B (en) * | 2016-11-28 | 2019-11-12 | 辽宁石油化工大学 | A kind of persulfate sustained release candle for in-situ remediation of underground water |
| CN106430365B (en) * | 2016-11-28 | 2019-11-12 | 辽宁石油化工大学 | A kind of Zero-valent Iron activator sustained release candle for in-situ remediation of underground water |
| CN106517481B (en) * | 2016-11-28 | 2019-11-12 | 辽宁石油化工大学 | A kind of ferrous activator sustained release candle for in-situ remediation of underground water |
| CN108178296A (en) * | 2018-02-01 | 2018-06-19 | 昆明理工大学 | A kind of method for strengthening anaerobic waste water biological phosphate-eliminating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102775020B (en) | 2014-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102775020B (en) | Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently | |
| CN102775019B (en) | Coupling type sewage de-phosphorization purification regeneration treatment technique | |
| CN102775021B (en) | Method of advanced treatment of high concentration phosphorus sewage and recycling of phosphorus | |
| CN105152351A (en) | Photoelectric artificial wetland and application thereof | |
| CN106591378A (en) | Method for carrying out anaerobic digestion by using heavy metal ions-rich biomass waste materials | |
| Deng et al. | Treatment and utilization of swine wastewater–A review on technologies in full-scale application | |
| CN113321345A (en) | Method for simultaneously recovering phosphorus in water body and removing antibiotics based on sludge-based biochar | |
| CN202988917U (en) | Vertical flow artificial wetland substrate reversed size grading system | |
| CN103613240B (en) | The device and method of multi-stage ecological sewage purification treatment | |
| Wang et al. | Purification mechanism of city tail water by constructed wetland substrate with NaOH-modified corn straw biochar | |
| CN108439719A (en) | A kind of sewage treatment process | |
| CN105016579A (en) | Rural sewage treatment system | |
| CN102910781B (en) | Compound treatment system for nitrogen and phosphorus removal of municipal wastewater and treatment method of system | |
| CN104310641A (en) | Deep phosphorous removal method for low-phosphorous water | |
| CN204265559U (en) | A kind of low-phosphorous water depth dephosphorization equipment | |
| CN111253001A (en) | Domestic sewage treatment device and treatment method thereof | |
| CN108975625B (en) | Constructed wetland system with nitrogen and phosphorus recovery function | |
| CN108975626B (en) | Landscape water treatment facilities with nitrogen phosphorus recovery effect | |
| CN101774703A (en) | Method for depriving nitrogen nutritive salt in surface water | |
| CN102942284A (en) | Method for preparing biological fluidized bed carrier and treating waste water | |
| CN103043860B (en) | Leachate utilizing equipment and method in biomass landfilling process | |
| Gu et al. | Effectiveness of a novel composite filler to enhance phosphorus removal in constructed wetlands | |
| Li et al. | Towards enhanced treatment of piggery biogas slurry in tidal flow constructed wetlands by regulation of hydraulic retention time | |
| CN102924152A (en) | Method for recovering nitrogen and phosphorus from biogas slurry | |
| CN215924530U (en) | Device for percolating and treating rare earth tail water by combining bacteria and algae |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 |