CN103936246B - A kind of sludge bioleaching method nurses one's health the method for deep dehydration fast - Google Patents
A kind of sludge bioleaching method nurses one's health the method for deep dehydration fast Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 70
- 230000018044 dehydration Effects 0.000 title claims abstract description 32
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 32
- 230000036541 health Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000000813 microbial effect Effects 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 230000003750 conditioning effect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 230000020477 pH reduction Effects 0.000 claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims abstract description 6
- 235000015097 nutrients Nutrition 0.000 claims abstract description 5
- 239000002054 inoculum Substances 0.000 claims description 16
- 241000223252 Rhodotorula Species 0.000 claims description 11
- 235000016709 nutrition Nutrition 0.000 claims description 11
- 230000035764 nutrition Effects 0.000 claims description 11
- 241000235648 Pichia Species 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 241000894006 Bacteria Species 0.000 claims description 9
- 238000002386 leaching Methods 0.000 claims description 7
- 241000605118 Thiobacillus Species 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 241000605272 Acidithiobacillus thiooxidans Species 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 230000001580 bacterial effect Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 claims description 3
- 241000605222 Acidithiobacillus ferrooxidans Species 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- 235000002595 Solanum tuberosum Nutrition 0.000 claims description 3
- 244000061456 Solanum tuberosum Species 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- 239000008103 glucose Substances 0.000 claims description 3
- 210000001082 somatic cell Anatomy 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- 241000223254 Rhodotorula mucilaginosa Species 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims description 2
- 238000011081 inoculation Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims 1
- 241000184283 Phaeosphaeria spartinae Species 0.000 claims 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims 1
- 229920002472 Starch Polymers 0.000 claims 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims 1
- 235000011130 ammonium sulphate Nutrition 0.000 claims 1
- 239000003876 biosurfactant Substances 0.000 claims 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims 1
- 239000004327 boric acid Substances 0.000 claims 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 235000019253 formic acid Nutrition 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 claims 1
- 229940061634 magnesium sulfate heptahydrate Drugs 0.000 claims 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims 1
- 229910052683 pyrite Inorganic materials 0.000 claims 1
- 239000011028 pyrite Substances 0.000 claims 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims 1
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims 1
- 235000019156 vitamin B Nutrition 0.000 claims 1
- 239000011720 vitamin B Substances 0.000 claims 1
- 235000019154 vitamin C Nutrition 0.000 claims 1
- 239000011718 vitamin C Substances 0.000 claims 1
- RZLVQBNCHSJZPX-UHFFFAOYSA-L zinc sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Zn+2].[O-]S([O-])(=O)=O RZLVQBNCHSJZPX-UHFFFAOYSA-L 0.000 claims 1
- 244000005700 microbiome Species 0.000 abstract description 19
- 239000010865 sewage Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 7
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 7
- 230000009965 odorless effect Effects 0.000 abstract description 6
- 239000005416 organic matter Substances 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000005189 flocculation Methods 0.000 abstract description 2
- 230000016615 flocculation Effects 0.000 abstract description 2
- 244000052769 pathogen Species 0.000 abstract description 2
- 230000001717 pathogenic effect Effects 0.000 abstract description 2
- 239000008346 aqueous phase Substances 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000006467 substitution reaction Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 27
- 208000005156 Dehydration Diseases 0.000 description 24
- 238000004321 preservation Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 238000004065 wastewater treatment Methods 0.000 description 7
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- 239000007787 solid Substances 0.000 description 5
- 238000005273 aeration Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 244000052616 bacterial pathogen Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005352 clarification Methods 0.000 description 3
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 241000191475 Scheffersomyces spartinae Species 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005276 aerator Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
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- 238000004062 sedimentation Methods 0.000 description 2
- 244000168141 Geotrichum candidum Species 0.000 description 1
- 235000017388 Geotrichum candidum Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
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- 229910052793 cadmium Inorganic materials 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
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- 239000012065 filter cake Substances 0.000 description 1
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- 230000008676 import Effects 0.000 description 1
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- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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Classifications
-
- 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
- Y02W10/20—Sludge processing
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of method that sludge bioleaching method nurses one's health deep dehydration fast.First bioleaching conditioning is carried out to mud, namely direct sewage work's concentrated liquid sludge pumping is processed 1.5-2d in the bioleaching reactor containing special complex microbial community, make irreducible water in mud become the free water more easily removed by microorganism substitution effect, bio-oxidation and biological acidification effect, make Heavy Metals in Sludge be extracted into aqueous phase simultaneously and kill pathogen in mud.Then collected in homogeneous pond by the mud after bioleaching, then dewater in the barrier film chamber-type press filter being delivered directly to usual pressure by pump, dewatered sludge cake water ratio is lower than 60%, and period does not add any flocculation agent as PAM etc.The inventive method is carried out at normal temperature and pressure, with low cost, and dehydrated sludge cake water ratio is low, odorless, and in khaki color, dewatered sludge cake organic matter, calorific value and nutrient all do not reduce, and are convenient to follow-up recycling.
Description
Technical field
The invention belongs to field of environmental improvement, relate to a kind of method that sludge bioleaching method nurses one's health deep dehydration fast.
Background technology
The quickening of China's expanding economy, urbanization process and the raising to environmental quality requirement, wastewater treatment in China career development is in recent years rapid.By in by the end of September, 2013, national the planned city, county add up to build up urban wastewater treatment firm 3501, sewage treatment capacity about 1.47 billion cubic meters/day, and every day produces more than 100,000 tons of dewatered sludges.These moisture percentage in sewage sludge are still up to about 80%, and the environmental problem caused because moisture content is high causes the concern of people day by day, deal carefully with so huge mud, need huge initial cost and working cost.Traditional sludge treatment expense account for sewage work's overall running cost 25% ?50%, investment account for sewage work 30 ?40%.According to the literature, due to economy and technical reason, it is less that the existing sludge treatment facilities built up normally runs, and most of mud is transported outward without any process, arbitrarily throw aside and simple landfill or agricultural, brings huge hidden danger to ecotope.The sludge reduction proposed about " urban wastewater treatment firm specific resistance to filtration technical policy (trying) (exposure draft) " according to national environmental protection portion in 2008, stabilization, harmless treatment and disposal principle; in conjunction with the treatment situation of the existing mud of China, to find properly, sludge treatment or utilize technology to have profound significance economically.
Reducing sludge water content is the key of saving sludge disposal cost, improving the follow-up disposal efficiency of mud.The key weighing sludge dewatering technology is exactly see whether this technology can reduce the water ratio of mud significantly.Desirable sludge dewatering technology should ensure under prerequisite that is economic, that ensure the solid particulate rate of recovery, realizes quick, high level cadre's dehydration of mud.Both at home and abroad the current method to deeply dehydrating sludge common are to add in mud San Lvization Tie ?lime/flyash/diatomite Deng ?the combination of polyacrylamide (PAM) chemical agent, then chamber-type press filter is adopted to be dewatered to water ratio less than 60%, the method is a ripe sludge conditioning deep dehydration technology, the engineering practice [USEPA, 1979] of existing more than 30 year abroad.But in China, because just there being the requirement of deep dehydration in recent years to mud, therefore also just just rising and tried out.But the inorganic dosing of the method is comparatively large, usually need to reach mud dry-matter 25% ?60%, even up to 100% (depending on mud organic content).Anti-increasing does not fall in its result not only final mud amount of dry matter, and in original organic sludge filter cake, inorganics proportion significantly increases, and organic and calorific value significantly reduces, and have impact on its follow-up resource utilization.And existing deep dehydration method can not effectively be removed the heavy metal in mud, pathogenic bacteria, stink etc. or control.Therefore, the deep dehydration method for sludge of existing routine has larger limitation.
We once disclosed method (Zhou Lixiang, Agricultural University Of Nanjing journal, 2012,35 (5): 154 ﹕ 166 of a sludge bioleaching method for deeply dehydrating sludge and heavy metals removal in 2012; Zhou Lixiang, China environmental protection industry, 2012, (9): 17 ?20) and be committed to engineer applied (Hu Jincai, etc. water supply and drainage, 2013,39 (7): 48 ?52).Its cardinal principle utilizes bioleaching microorganism to sludge modification in aeration situation, after reaction certain hour, is directly dewatered to moisture less than 60% with chamber-type press filter.The great advantage of the method is: do not need to add any flocculation agent or coagulant aids (as lime by sludge dewatering after microorganism conditioning, PAM, iron trichloride, polymer-cement based composite etc.), therefore mud organic matter and calorific value are saved from damage, are convenient to following resourceization and utilize; The method can not increase the amount of dry matter of dewatered sludge; Can the stench of mud be removed completely and effectively kill pathogenic bacteria; If desired with removal Heavy Metals in Sludge.Due to the significant advantage of this technology, within very short time just in Jiangsu, Zhejiang, Shaanxi, Fujian, the ground such as Heilungkiang is widely applied, also maintain the leading position in the world at present.But in practice, we find, the bioleaching time of the method usually longer (needing 2 days), which increases structures volume and adds investment, reduce treatment efficiency; During spring winter low temperature, effect can be poorer than summer and autumn.Therefore, need to improve protista drop leaching technology and technique, invention bioleaching nurses one's health the novel method of deep dehydration fast, to make up these defects.
Research finds, the bioleaching time is long, mainly original bioleaching microorganism becomes the overlong time of dominant bacteria in the reactor, in mud, dissolved organic matter has detailed restraining effect to its growth, therefore, in reaction system, import the new heterotroph microorganism cutting down these toxic substances fast, just there is obvious effect, bioleaching microorganism Fast-propagation can be promoted.And when spring winter low temperature, microorganism growth is comparatively slow, manages to increase its cell density, make it be trapped in reactor, then can solve the inadequate problem of microbe density in winter.The reaction times can be made significantly to shorten by these novel methods and obtain better effects in winter in spring.
Summary of the invention
The object of the invention is to for existing sludge bioleaching method deep dehydration method long reaction time, winter in spring the shortcoming such as costs and poor dehydration results, provide a kind of method of bioleaching fast to nurse one's health the method for deep dehydration.
Object of the present invention is achieved through the following technical solutions:
Sludge bioleaching method nurses one's health a method for deep dehydration fast, comprises following steps:
(1) prepared by add richness, domestication and the inoculum of complex microbial community
Pichia spp (P.spartinae) D13 that thiobacillus ferrooxidant (thiobacillusferrooxidans) LX5 that thiobacillus thiooxidans (thiobacillusthioooxidans) TS6 of to be preserving number the be CGMCCNO.0759 of the bacterial strain for sludge bioleaching, preserving number are CGMCCNO.0727, preserving number are CGMCCNo.3035, preserving number are CGMCCNo.4298 ground mould (Galactomycessp.) Z3, and preserving number is rhodotorula (Rhodotorulamucilaginosa) R30 of CGMCCNo.1147; By above-mentioned inoculation in respective substratum, be then placed in 25 ~ 28 DEG C, the vibration of the reciprocal shaker of 180 ~ 200rpm expands numerous cultivation, until somatic cells quantity reaches 10
8individual/mL, then by nutrient solution 3 ~ 5:3 by volume ~ 5:0.5 ~ 1:0.5 ~ 1:1 mixing of Thiobacilus thiooxidans TS6, Thiobacilus ferrooxidans LX5, pichia spp D13, rhodotorula R30 and the mould Z3 in ground, draw mixed bacteria liquid be inoculated in fresh pending mud in 25 ~ 28 DEG C, cultivate that to obtain thalline quantity be 10 in 180 ~ 200rpm reciprocal shaker
8individual mL
– 1acidification sludge, then draw acidification sludge and be inoculated in fresh pending mud and cultivate, so repeat 2 times, the acclimation sludge of gained is inoculum; Wherein, Thiobacilus thiooxidans TS6 substratum is g/L:(NH
4)
2sO
40.4, KH
2pO
43.0, MgSO
47H
2o0.5, CaCl
22H
2o0.25, sulphur powder 10; Thiobacilus ferrooxidans LX5 substratum is g/L:(NH
4)
2sO
43.5, KCl0.119, K
2hPO
40.58, Ca (NO
3)
24H
2o0.168, MgSO
47H
2o0.583, FeSO
47H
2o4.42, uses 10NH
2sO
4pH is adjusted to be 2.5; The mould Z3 substratum of pichia spp D13, rhodotorula R30 and ground is g/L: potato 200, sucrose or glucose 20, use 10NH
2sO
4pH is adjusted to be 2.5;
(2) the bioleaching conditioning of mud
In the bioleaching reactor that mud is housed, described inoculum is added in the ratio of sludge volume 8% ~ 15%, and add bioleaching microbial nutrition agent (the concrete composition of nutrition agent is shown in ZL201010221264.1) in the ratio accounting for mud amount of dry matter 8% ~ 15%, aerobic, 28 DEG C ~ 35 DEG C, cultivate 1.5-2d under agitation condition;
(3) mud van-type filter-press dehydration after drop leaching
Mud direct press filtration under barrier film chamber-type press filter after bioleaching is nursed one's health, the feed time of modified mud is 1 ~ 3h (depending on pressure filter size), high pressure water squeezing pressurize 1 ~ 2h, feed pressure 0.6-0.8MPa, diaphragm pressing pressure 1.2 ~ 1.6MPa.
Described mixed bacteria liquid is inoculated into fresh in examination mud according to the inoculum size of 10% ~ 12% (v/v).
Described acidification sludge is inoculated into fresh in examination mud according to the inoculum size of 10% ~ 12% (v/v).
The described reactor of sludge bioleaching conditioning described in step is pulling flow type bioleaching reactor, and preferred application number is the treatment facility of pulling flow type bioleaching disclosed in 200810242584.8 patent applications.
Beneficial effect
The present invention has compared with prior art, and tool has the following advantages:
(1) technique is simple, and adopt biological process to carry out at normal temperatures and pressures, running cost is cheap.
(2) microorganism only needs disposable input, long-time running, without the need to adding at every turn.
(3) the leaching ability of heavy metal rate of mud reaches more than 80%, and the killing rate of pathogen reaches more than 99%, can obtain " cleaning " mud of high mass dryness fraction.
(4) the present invention can stablize and is dewatered to water ratio less than 60%, and mud outward appearance is khaki color, odorless, and in mud cake, moisture especially easily evaporates.
(5) owing to not adding a large amount of inorganic medicaments, and be microbial method process, sludge cake organic matter and calorific value can not reduce.During 55% water ratio, its superior calorific value can up to 9MJ/kg.
(6) whole treating processes odorless, press filtration water COD is suitable with sewage treatment plant inflow, directly can enter sewage work's process, environmental health.
(7) mud cake can directly after fragmentation as gardens Nutrition Soil, also can be used as building materials and use (as firing hollow light brick), also can burn not adding to control oneself in any auxiliary fuel situation, add recycling sludge approach.
Accompanying drawing explanation
Fig. 1 sludge bioleaching processing technological flow figure
Biomaterial preservation proves
D13, Classification And Nomenclature is Pichiaspartinae, is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, preservation address is Datun Road, Chaoyang District, Beijing City, Institute of Microorganism, Academia Sinica, preservation date is on April 23rd, 2009, and preserving number is CGMCCNo.3035.
GalactomycesSP.Z3, Classification And Nomenclature is Galactomycesgeotrichum, be preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, preservation address is No. 3, Yard 1, BeiChen xi Road, Chaoyang District, Beijing City, Institute of Microorganism, Academia Sinica, preservation date is on November 5th, 2010, and preserving number is CGMCCNo.4298.
R30, Classification And Nomenclature is rhodotorula Rhodotorulasp., be preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, preservation address is No. 13, North No.1 Row, Zhongguancun, Haidian District, Beijing City, Institute of Microorganism, Academia Sinica, preservation date is on May 13rd, 2004, and preserving number is CGMCCNo.1147.
TS6, Classification And Nomenclature is thiobacillus thiooxidans Thiobacillusthiooxidans, is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, and preservation address is China. Zhong Guan-cun, preservation date is on July 4th, 2002, and preserving number is CGMCCNo.0759.
LX5, Classification And Nomenclature is thiobacillus ferrooxidant thiobacillusferrooxidans, is preserved in China Committee for Culture Collection of Microorganisms's common micro-organisms center, and preservation address is China. Zhong Guan-cun, preservation date is on March 13rd, 2002, and preserving number is CGMCCNo.0727.
Embodiment
Prepared by add richness, domestication and the inoculum of embodiment 1 complex microbial community
Bacterial strain for sludge bioleaching be this testing laboratory isolated thiobacillus thiooxidans thiobacillusthioooxidansTS6, thiobacillus ferrooxidant thiobacillusferrooxidansLX5 and pichia spp P.spartinaeD13, mould Galactomycessp.Z3, and rhodotorula RhodotorulamucilaginosaR30.By above-mentioned bacterial strain at respective substratum (Thiobacilus thiooxidans TS6 substratum g/L:(NH
4)
2sO
40.4, KH
2pO
43.0, MgSO
47H
2o0.5, CaCl
22H
2o0.25, sulphur powder 10; Thiobacilus ferrooxidans LX5 substratum g/L:(NH
4)
2sO
43.5, KCl0.119, K
2hPO
40.58, Ca (NO
3)
24H
2o0.168, MgSO
47H
2o0.583, FeSO
47H
2o4.42, uses 10NH
2sO
4pH is adjusted to be 2.5; Pichia spp D13, rhodotorula R30 and the mould Z3 substratum g/L in ground: potato 200, sucrose or glucose 20, use 10NH
2sO
4adjust pH to be 2.5) in cultivate to expand and numerously (be placed in 28 DEG C of reciprocal shaker 180rpm shaking culture, until somatic cells quantity reaches 10
8individual/mL), then by Thiobacilus thiooxidans TS6, Thiobacilus ferrooxidans LX5, pichia spp D13, rhodotorula R30 and ground mould Z3 nutrient solution by volume 3:3:1:1:1 mixing.Draw in a certain amount of mixed bacteria liquid to fresh pending mud and carry out cultivating (bacteria liquid amasss and accounts for 10% of fresh sludge volume), until the quantity of thalline reaches 10
8individual mL
– 1, then draw this acidification sludge a certain amount of and carry out cultivating (acidification sludge volume accounts for 10% of fresh sludge volume) in examination mud to fresh, so repeat 2 times, the acclimation sludge of gained is inoculum.
Embodiment 2, Nanjing sludge from wastewater treatment plant bioleaching are nursed one's health
Technique mentioned by the present invention, processes Nanjing sludge from wastewater treatment plant according to flow process (see accompanying drawing 1).The sewage treatment process of this sewage work is activated sludge process, mud is without anaerobism or aerobic sigestion process. and getting about 10 tons of solid contents is the thickened sludge of 4.46%, this liquid sludge essential property of process mensuration is pH value is 7.26, organic 52.9%, and sludge specific resistance is 1.50 × 10
13mkg
– 1, extremely difficult dehydration, and there is stench.
The bioleaching stage: be that inoculum and pending mud are joined bioleaching reactor by 1:9 according to the volume ratio of inoculum and pending mud, and add bioleaching microbial nutrition agent (the concrete composition of nutrition agent and preparation method are shown in ZL201010221264.1 embodiment) in the ratio accounting for mud amount of dry matter 12%.This bioleaching reactor adopts 8mmPVC plate to be welded, for the long rectangular configuration of long 2000mm × wide 700mm × dark 850mm, working volume 700L. is longitudinally completely separately divided into 2 gallerys with PVC dividing plate, each gallery arranges 2 PVC traverse baffles, interlock up and down, divide into 3 regions, 2 gallery totally 6 regions, aperture tube aerator is equipped with in inside.Its concrete structure is shown in that application number is 200810242584.8 patents.Temperature be 28 DEG C, aeration rate is 1.2m
3h
– 1under, complex microorganism and mud effect in reactor, make mud be nursed one's health through the process of 1.5-2d bioleaching and be easy to sedimentation and dehydration, and after drop leaching, sludge specific resistance is reduced to 1.01 × 10
12mkg
– 1.
The filter-press dehydration stage: the mud of above-mentioned bioleaching post-modification enters homogeneous pond and collects, then the direct press filtration of barrier film chamber-type press filter is transported to spiral pump, feed time 1.5h, high pressure water squeezing pressurize 1h, feed pressure 0.6-0.8MPa, diaphragm pressing pressure 1.4MPa, now press filtration water colorless clarification, the mud cake squeezed out is khaki color, odorless, water ratio 58.2%, pathogenic bacteria (taking colibacillus of excrement as index) killing rate 99.7%, heavy metal (Cu, Zn, Cd, Ni etc.) clearance is 78.8%, organic matter 51.8% in mud cake after measuring and finding dehydration, mud organic matter 52.8% before relative process, obviously do not reduce.In addition, the mud cake after dehydration is placed 15h under 25 DEG C of conditions, and the water ratio of mud cake drops to about 45%, and after placing 96h, water ratio is reduced to less than 15% further.
Embodiment 3, Wuxi sludge of sewage treatment plant bioleaching are nursed one's health
Technique mentioned by the present invention, processes Wuxi sludge from wastewater treatment plant according to flow process (see accompanying drawing 1).The sewage treatment process of this sewage work is activated sludge process, mud is without anaerobism or aerobic sigestion process. get Yue10Dun Gai factory thickened sludge, this liquid sludge essential property of process mensuration is pH value is 7.52, organic 48.3%, full nitrogen 4.78%, full phosphorus 3.00%, superior calorific value 10.4MJ/kg, heavy metal does not all exceed standard, and sludge specific resistance is 2.05 × 10
13mkg
– 1, extremely difficult dehydration, and there is stench.Before conditioning, this mud being diluted to solid content is respectively 2%, 3%, 4% and 5%, and the resistivity of mud is respectively 1.45 × 10 after measured
13mkg
– 1, 1.81 × 10
13mkg
– 1, 1.93 × 10
13mkg
– 1with 2.01 × 10
13mkg
– 1.
The bioleaching stage: adopt based on thiobacillus and coordinate the complex microbial community of the acid resistance heterotrophic bacterium of number strain to nurse one's health this mud, be that 1:9 joins in plug flow reactor according to the ratio of pre-acidified inoculum and the pending mud of above-mentioned different concns, and add bioleaching microbial nutrition agent (the concrete composition of nutrition agent and preparation method are shown in ZL201010221264.1 embodiment) in the ratio accounting for mud amount of dry matter 10%.This bioleaching reactor adopts 8mmPVC plate to be welded, for the long rectangular configuration of long 2000mm × wide 700mm × dark 850mm, working volume 700L. is longitudinally completely separately divided into 2 gallerys with PVC dividing plate, each gallery arranges 2 PVC traverse baffles, interlock up and down, divide into 3 regions, 2 gallery totally 6 regions, aperture tube aerator is equipped with in inside.Its concrete structure is shown in that application number is 200810242584.8 patents.Temperature be 28 DEG C, aeration rate is 1.2m
3h
– 1under, complex microorganism and mud effect in reactor, make mud be nursed one's health through the process of 1.5-2d bioleaching and be easy to sedimentation and dehydration.After drop leaching, 0.61 × 10 is down to the resistivity that solid content is the mud of 2%, 3%, 4% and 5%
12mkg
– 1, 1.22 × 10
12mkg
– 1, 3.09 × 10
12mkg
– 1, and 4.83 × 10
12mkg
– 1.
The filter-press dehydration stage: the mud of above-mentioned bioleaching post-modification enters homogeneous pond and collects, then direct press filtration under being transported to barrier film chamber-type press filter with spiral pump, feed time 1.5h, high pressure water squeezing pressurize 1.0h, feed pressure 0.6-0.8MPa, diaphragm pressing pressure 1.4MPa, now press filtration water colorless clarification, the mud cake squeezed out is khaki color, odorless, water ratio 56.3%, in mud cake after measuring and finding dehydration, organic content is 47.9%, superior calorific value is 10.2MJ/kg, with process before mud organic matter be 48.3%, superior calorific value is that 10.4MJ/kg compares, the two does not have significant difference.
The test of embodiment 4, Wuxi sludge of sewage treatment plant bioleaching conditioning large productive
Technique mentioned by the present invention, carries out the test of bioleaching conditioning large productive according to flow process (see accompanying drawing 1) to Wuxi sludge from wastewater treatment plant.The sewage treatment process of this sewage work is activated sludge process, and mud is without anaerobism or aerobic sigestion process. this factory's concentration basin sludge pH about 7.5, solid content 3.01-4.5%, organic 40.5-50.3%, superior calorific value 9.2-11.3MJ/kg.This productivity base takes up an area about 2.5 mu, the mud that treatment scale produces for processing this factory 50,000 tons of sewage day.
The bioleaching stage: adopt based on thiobacillus and coordinate the complex microbial community of the acid resistance heterotrophic bacterium of number strain to nurse one's health this mud.Be 200m by building a useful volume
3pulling flow type bioleaching reactor, in reactor, the inoculum size of complex microorganism accounts for 10% of sludge volume, and adds bioleaching microbial nutrition agent (the concrete composition of nutrition agent and preparation method are shown in ZL201010221264.1 embodiment) in the ratio accounting for pending mud amount of dry matter 15%.In operational process, the mud residence time is in the reactor 2d, and aeration rate is 7m
3/ m
2.h, the dissolved oxygen concentration of reactor is made to be greater than 2mgL
-1, the mud after drop leaching enters homogeneous pond and collects.
The filter-press dehydration stage: the mud spiral pump of the above-mentioned bioleaching post-modification be collected in homogeneous pond is transported to direct press filtration in barrier film chamber-type press filter, feed time 2.5h, high pressure water squeezing pressurize 1.5h, feed pressure 0.8MPa, diaphragm pressing pressure 1.5MPa, now press filtration water colorless clarification, the mud cake squeezed out is khaki color, odorless, water ratio 57.6%, in mud cake after measuring and finding dehydration, organic content is 40.1-51%, superior calorific value is 9.02-11.0MJ/kg, 40.5-50.3% organic with mud before process, superior calorific value 9.2-11.3MJ/kg compares, obviously do not reduce, and it is very easily broken, be convenient to follow-up recycling.
Claims (5)
1. sludge bioleaching method nurses one's health a method for deep dehydration fast, it is characterized in that comprising following steps:
(1) prepared by add richness, domestication and the inoculum of complex microbial community
Pichia spp (P.spartinae) D13 that thiobacillus ferrooxidant (thiobacillusferrooxidans) LX5 that thiobacillus thiooxidans (thiobacillusthioooxidans) TS6 of to be preserving number the be CGMCCNO.0759 of the bacterial strain for sludge bioleaching, preserving number are CGMCCNO.0727, preserving number are CGMCCNo.3035, preserving number are CGMCCNo.4298 ground mould (Galactomycessp.) Z3, and preserving number is rhodotorula (Rhodotorulamucilaginosa) R30 of CGMCCNo.1147; By above-mentioned inoculation in respective substratum, be then placed in 25 ~ 28 DEG C, the vibration of the reciprocal shaker of 180 ~ 200rpm expands numerous cultivation, until somatic cells quantity reaches 10
8individual/mL, then by nutrient solution 3 ~ 5:3 by volume ~ 5:0.5 ~ 1:0.5 ~ 1:1 mixing of Thiobacilus thiooxidans TS6, Thiobacilus ferrooxidans LX5, pichia spp D13, rhodotorula R30 and the mould Z3 in ground, draw mixed bacteria liquid be inoculated in fresh pending mud in 25 ~ 28 DEG C, cultivate that to obtain thalline quantity be 10 in 180 ~ 200rpm reciprocal shaker
8individual mL
– 1acidification sludge, then draw acidification sludge and be inoculated in fresh pending mud and cultivate, so repeat 2 times, the acclimation sludge of gained is inoculum; Wherein, Thiobacilus thiooxidans TS6 substratum is g/L:(NH
4)
2sO
40.4, KH
2pO
43.0, MgSO
47H
2o0.5, CaCl
22H
2o0.25, sulphur powder 10; Thiobacilus ferrooxidans LX5 substratum is g/L:(NH
4)
2sO
43.5, KCl0.119, K
2hPO
40.58, Ca (NO
3)
24H
2o0.168, MgSO
47H
2o0.583, FeSO
47H
2o4.42, uses 10NH
2sO
4pH is adjusted to be 2.5; The mould Z3 substratum of pichia spp D13, rhodotorula R30 and ground is g/L: potato 200, sucrose or glucose 20, use 10NH
2sO
4pH is adjusted to be 2.5;
(2) the bioleaching conditioning of mud
In the bioleaching reactor that mud is housed, described inoculum is added in the ratio of sludge volume 8% ~ 15%, and add the agent of bioleaching microbial nutrition in the ratio accounting for mud amount of dry matter 8% ~ 15%, aerobic, 28 DEG C ~ 35 DEG C, cultivate 1.5-2d under agitation condition; Described bioleaching microbial nutrition agent is contain in 1 ton of medicament: ammonium sulfate, 3 kilograms; Repone K, 0.2 kilogram; Dipotassium hydrogen phosphate, 2 kilograms; Nitrocalcite, 0.4 kilogram; Magnesium sulfate heptahydrate, 0.5 kilogram; Vitamins B, 1.5 kilograms; Vitamins C, 1.5 kilograms; Seven water manganous sulfates, 0.4 kilogram; Zinc Sulphate Heptahydrate, 2 kilograms; Boric acid, 0.4 kilogram; Sodium orthomolybdate, 0.4 kilogram; Starch, 3.6 kilograms; Formic acid, 2.4 kilograms; Five water Sulfothiorine, 200 kilograms; Modified sulphur powder, 200 kilograms; 100 order essence pyrite or iron vitriols, double centner; Rhanolipid as biosurfactant, 0.6 kilogram; Filler diatomite adds to 1 ton;
(3) mud van-type filter-press dehydration after drop leaching
Mud direct press filtration under barrier film chamber-type press filter after being nursed one's health by bioleaching, the feed time of modified mud is 1 ~ 3h, high pressure water squeezing pressurize 1 ~ 2h, feed pressure 0.6-0.8MPa, diaphragm pressing pressure 1.2 ~ 1.6MPa.
2. a kind of sludge bioleaching method according to claim 1 nurses one's health the method for deep dehydration fast, it is characterized in that the Thiobacilus thiooxidans TS6 described in step (1), Thiobacilus ferrooxidans LX5, pichia spp D13, rhodotorula R30 and ground mould Z3 nutrient solution by volume 3:3:1:1:1 mixing.
3. a kind of sludge bioleaching method according to claim 1 nurses one's health the method for deep dehydration fast, it is characterized in that described mixed bacteria liquid is according to 10% ~ 12%(v/v) inoculum size be inoculated in fresh pending mud.
4. a kind of sludge bioleaching method according to claim 1 nurses one's health the method for deep dehydration fast, it is characterized in that described acidification sludge is according to 10% ~ 12%(v/v) inoculum size be inoculated into fresh pending mud.
5. a kind of sludge bioleaching method according to claim 1 nurses one's health the method for deep dehydration fast, it is characterized in that the reactor of bioleaching conditioning described in step of mud is pulling flow type bioleaching reactor.
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| CN104496140B (en) * | 2014-11-11 | 2017-01-11 | 北京中科国通环保工程技术有限公司 | Municipal sludge bioleaching method |
| CN106277659A (en) * | 2015-05-15 | 2017-01-04 | 轻工业环境保护研究所 | A kind of method of sludge organism acidifying dehydration |
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| CN116817546B (en) * | 2023-08-28 | 2023-12-01 | 上海凌逍环保科技有限公司 | Dehydration treatment method, liquid fertilizer preparation method and organic fertilizer preparation method |
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