CN104529112A - Sludge bio-drying treatment technology - Google Patents
Sludge bio-drying treatment technology Download PDFInfo
- Publication number
- CN104529112A CN104529112A CN201410700581.XA CN201410700581A CN104529112A CN 104529112 A CN104529112 A CN 104529112A CN 201410700581 A CN201410700581 A CN 201410700581A CN 104529112 A CN104529112 A CN 104529112A
- Authority
- CN
- China
- Prior art keywords
- sludge
- drying
- mummification
- dewatered
- fermentation
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 131
- 238000005516 engineering process Methods 0.000 title abstract description 12
- 238000009278 biodrying Methods 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000001035 drying Methods 0.000 claims abstract description 54
- 230000004151 fermentation Effects 0.000 claims abstract description 26
- 238000000855 fermentation Methods 0.000 claims abstract description 24
- 238000010564 aerobic fermentation Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000002689 soil Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 71
- 150000001875 compounds Chemical class 0.000 claims description 39
- 239000002068 microbial inoculum Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 31
- 230000001580 bacterial effect Effects 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 24
- 241000894006 Bacteria Species 0.000 claims description 21
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 claims description 21
- 239000000428 dust Substances 0.000 claims description 14
- 230000001877 deodorizing effect Effects 0.000 claims description 11
- 238000009423 ventilation Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 6
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000010902 straw Substances 0.000 claims description 6
- 241001446247 uncultured actinomycete Species 0.000 claims description 6
- 230000003203 everyday effect Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 230000000813 microbial effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 239000002054 inoculum Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 239000010865 sewage Substances 0.000 description 9
- 244000005700 microbiome Species 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 239000011651 chromium Substances 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000000050 nutritive effect Effects 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000004459 forage Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 1
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 241000244203 Caenorhabditis elegans Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 241001615895 bacterium IS6 Species 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002623 sporogenic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge bio-drying treatment technology using microbial fermentation drying. Technical problems of high electricity consumption and sever environmental pollution of present sludge drying are solved in the invention. The technology is characterized in that concentrated fresh sludge with the water content of 76-84% is dried, and the technology comprises the following steps: blending the fresh sludge to adjust the water content, adding an inoculant, and fermenting and drying the sludge. Dried sludge obtained after the drying treatment can be used to replenish soil. The bio-drying technology using microbial aerobic fermentation produced heat to evaporate water fully utilizes the biological energy of the sludge, so the bio-drying technology has the advantages of economy, energy saving, environmental protection, increased drying efficiency and shortened drying cycle.
Description
Technical field
The present invention relates to the treatment technology of sewage disposal product and mud, especially the biological dewatered treatment technology of mud.
Background technology
A large amount of mud is produced through the process procedure such as primary sedimentation pond, secondary sedimentation basins during town domestic sewage process.Generally every ten thousand tons of sewage mud generation after treatment (by water ratio 80%) are about 6 ~ 8 tons.This mud produces foul smell, and containing a large amount of heavy metal elements (as Cd, Hg, As, Pb, Ni, Cr, Cu etc.), harmful organic substance (as benzopyrene, polychlorobiphenyl) and the harmful bacteria such as fecal coliform and roundworm egg, town environment is polluted and constitutes serious threat.
Current sludge disposal is broadly divided into: sanitary landfill, compost Land_use change, lime solidify & bury, anaerobism producing methane and anhydration and incineration etc.Because municipal sludge water ratio is higher, still up to about 80% after thickening, have volume large, be unfavorable for the features such as transport, character is unstable." landfill " will take a large amount of soil, also can produce percolate and polluted underground water simultaneously; " Land_use change " then because traffic capacity is large, difficulties in dispersion, easily polluted underground water and be restricted; " compost Land_use change " is difficult to Rational Application because of the heavy metal unstable of mud; " burning " causes calorific value too low because solid content is low, cannot maintain effective spontaneous combustion and at substantial auxiliary fuel, cost of disposal is obviously increased.Therefore the drying and other treatment of mud is the important step that sludge resource is disposed.
Mud, the carrying out of sludge drying bed, is deposited in outdoor drying bed, carries out mummification by natural ventilation and action of gravity to mud by traditional sludge drying.Current drying process is mainly heat drying and mechanical mummification, is namely evaporated and extruding by the moisture in mud by external heat source, power supply and relevant mechanical means.The former floor space is large, efficiency is low; The latter invests and working cost is high, equipment operation energy consumption is high.Although the domestic and international technique of heat drying being carried out to sludge drying of present stage is constantly being improved, as optimized thermal source, reducing processing step, optimizing fortune place parameter, the characteristic (utilizing external heat source) of its technique itself is determining that its drying process energy consumption is higher.
Summary of the invention
The present invention is the technical problem such as solve that existing sludge drying (heat drying) power consumption is high, cost is high, occupation of land is wide, environmental pollution is more serious in drying process, and then provides a kind of sludge organism drying and other treatment technology utilizing fermentable mummification.
Sludge organism drying and other treatment of the present invention is water ratio after concentration be 76% ~ 84% fresh sludge carry out drying and other treatment process, it includes following steps:
A, allotment fresh sludge water ratio: the base-material being 28% ~ 32% by fresh sludge and water ratio is uniformly mixed by 1: 1.4 ~ 1.6 weight ratios, obtains compound;
B, interpolation microbial inoculum: in the compound of step a gained, add the Bacterial Complex of 2.0 ‰ ~ 2.5 ‰ of compound weight and mix thoroughly, mummification material must be treated;
The fermentation of c, mud, mummification: step b gained treated that mummification stockpile becomes fermentation mummification dust to carry out fermenting, mummification, obtain dewatered sludge.
Further, this microbial inoculum is Bacterial Complex, is undertaken mixing by the weight ratio of 6:6:5:3 by bacillus acidocldarius, thermophilic actinomycete, thermotolerant yeast bacterium, deodorizing bacterium.
Further, the carbon-nitrogen mass ratio in this compound is 24 ~ 26: 1.
Further, this carbon-nitrogen mass ratio realizes by adding auxiliary material and stirring in step a; This auxiliary material is stalk, straw or the straw or like vegetable that carbon content is high.
Further, the water ratio of this dewatered sludge is 28% ~ 32%.
Further, this fermentation mummification dust is overthrown once every day, and its fermentation, drying time are 10 ~ 12 days.
Further, dewatered sludge selected by this base-material.
Further again, being uniformly mixed in above-mentioned steps a is carried out in airtight negative pressure space; This airtight negative pressure space is provided with deodoration system; This deodoration system is used for the foul smell produced in airtight negative pressure space to carry out processing and discharging.
Further, above-mentioned steps b, c carry out in sludge organism mummification groove; This sludge organism mummification groove is arranged in aerobic fermentation workshop; Its bottom land is equipped with aerating system, and groove tail is provided with deodorizing extractor fan; This aerating system is used for carrying out discontinuous forced ventilation to biological dewatered groove, is better fermented to make the aerobic fermentation bacterial classification in Bacterial Complex.
The dewatered sludge of a kind of mud of the present invention after biological dewatered process, for supplementary soil or for the energy making brick body raw material or produce for energy.
Add drying and other treatment mud treated by base-material water ratio to 46% ~ 54% with adjustment in the present invention, be conducive to growth and the sludge fermentation mummification of bacterial classification.
Base-material of the present invention adopts the dewatered sludge after drying and other treatment, gathers materials on the spot, and decreases because of excavation, transports labour cost, the cost brought, improve the utilization ratio of equipment, and avoids the environmental pollution because the base-materials such as excavation loess bring simultaneously.
The present invention adopts the proportioning between rational fresh sludge and base-material, is conducive to shortening the sludge drying time, improves sludge treatment efficiency.
Adjusted the carbon-nitrogen ratio in mud in the present invention by the material that interpolation cellulose is high, be conducive to microorganism to organic decomposition, remove objectionable impurities, and produce heat energy, impel the quick mummification of mud.Carbon-nitrogen ratio after the theoretical analysis and required value are quite (carbon-nitrogen ratio is generally 25:1).Its reason is when microbial decomposition organism, about needs assimilation 1 part of nitrogen to form its own cells body, because the carbon-nitrogen ratio of microorganism self is approximately 5:1 during assimilation 5 parts of carbon.And need consumption 4 parts of organic carbons to obtain energy when assimilating (absorbing) 1 part of carbon, need consumption to utilize 25 parts of organic carbons so antimicrobial absorbent utilizes during 1 part of nitrogen.That is, microorganism is to the 25:1 of the proper carbon-nitrogen ratio of decomposing of organic matter.When lower than its required value, and select auxiliary material that cellulose is higher with supplementary carbon source further.Therefore, acting on better by adding the favourable Bacterial Complex performance of auxiliary material, accelerating the mummification of mud simultaneously.
The present invention also has the following advantages compared with existing sludge drying process: because the present invention utilizes microorganism aerobic heat production of fermenting to carry out the biological dewatered technique of transpiring moisture, take full advantage of the bioenergy of mud self, except the power consumption needed for ventilation aeration, without external heat source, it is therefore the drying technique of a kind of economy, energy-saving and environmental protection.Forced-air blast is carried out by treating mummification material.Improve mummification efficiency, shorten the mummification cycle.Specifically compare and refer to following table 1.
Table 1. heat drying, natural mummification compare with biological dewatered
Accompanying drawing explanation
Fig. 1 is the compound mummification temperature changing curve diagram for different ingredients listed in table 2;
Fig. 2 is the influence curve figure of thalline to sludge drying.
experimental analysis
1, base-material and proportioning thereof
Add base-material and be mainly used for adjusting fresh sludge (sewage work directly produce and mud after concentration) water ratio.Generally from sewage work produce and the water ratio of fresh sludge after concentration is 76% ~ 84%(that is about 80%), conveniently operation, and the growth ensureing bacteria agent, by adding base-material to adjust its water ratio.
Raw material: fresh sludge: use sludge of sewage treatment plant, water ratio is 80%.
Base-material: selecting dewatered sludge (note: adopt the suitable surrogate of water ratio first, as loess etc.), is sludge organism mummification after product, water ratio 30%.
Allocated by table 2 requirement when not adding bacteria agent by above-mentioned two kinds of raw materials, the compound of each " project " is piled in four mummification grooves respectively after stirring, and detects the temperature variation of different times compound and compares.
Table 2. fresh sludge and base-material proportioning
| Project | Fresh sludge amount (kg) | Base-material amount (kg) | Moisture content after mixing |
| Formula A | 10000 | 7000 | 59.4% |
| Formula B | 10000 | 10000 | 55% |
| Formula C | 10000 | 15000 | 50% |
| Formula D | 10000 | 20000 | 46.7% |
From table 2 also composition graphs 1, formula A is because moisture content is higher, and it is minimum that its temperature passes change in time, and formula D temperature variation is maximum.Formula C, D are suitable as biological dewatered formula, and formula D effect is best.Consider from practical application angle, because in formula D, base-material usage quantity is 2 times of fresh sludge, after mixing, volume is double, adds the burden of biological dewatered groove, fresh sludge processing rate is reduced; Consider from temperature variation and base-material usage quantity two aspects, formula C is the most rational proportioning, is conducive to the mummification of mud.
To mix from different amount base-material with amount mud by upper table 2, and put into the sludge drying groove under identical conditions respectively, and carry out nature mummification, to study different ingredients biological dewatered moisture content change situation in the same period.See table 3, table 3 column data is the moisture content of compound sampling and measuring when mummification the 11st day of different ratios formula.As seen from Table 3, the water evaporation quantity of formula C and formula D is maximum, and the moisture content of formula C when mummification the 11st day is 31%, and formula D is 29%.
Table 3: the biological dewatered moisture content change of different ingredients material compares
| Title | Formula A | Formula B | Formula C | Formula D |
| Biological dewatered front water content | 59.4% | 55% | 50% | 46.7% |
| Water content after biological dewatered 11 days | 45% | 38% | 31% | 29% |
| Vaporize water component | 14.5% | 17% | 19% | 17.7% |
As can be seen here: 1, again mix with fresh sludge as base-material after fresh sludge mummification that to carry out biological dewatered be feasible; 2, fresh sludge and base-material optimization formula are weight ratio 1:1.4 ~ 1.6; 3, due to biological dewatered be the process of a biological activity, therefore suitable carbon-nitrogen ratio is needed, if repeatedly recycling as base-material after sludge drying, carbon source may be caused to run off, the auxiliary material adding some high cellulose contents in each mixing process should be considered, for supplementary carbon source, the addition of auxiliary material is between 5%-8%.
the selection of microbial inoculum and proportioning
1., the shaker test of microbiobacterial agent.
Microbial inoculum: the Bacterial Complex selecting the multiple strain culturing provided by China Agricultural University's agricultural biological preparation Pilot Base, this Bacterial Complex includes bacillus acidocldarius, thermophilic actinomycete, thermotolerant yeast bacterium, deodorizing bacterium four kinds of bacterium.Wherein the minimum growth temperature of bacillus acidocldarius is 28 DEG C, maximum growth temperature 70 ~ 77 DEG C, and optimum growth and breeding temperature is 56 ~ 65 DEG C.The growth suitable temp of thermophilic actinomycete is 57 DEG C ~ 60 DEG C; Sporogenic suitable temp is 55 DEG C, 37 DEG C.Thermotolerant yeast bacterium optimum growth temperature is generally between 20 DEG C ~ 40 DEG C, and it is at biological dewatered initial stage amount reproduction, plays the effect of intensification and adjust ph.This deodorizing bacterium is composited by the aerobic deodorizing bacterium of 2 strain.Adopt the Bacterial Complex that above-mentioned four kinds of bacterium carry out preparing in different ratios, i.e. microbial inoculum I, microbial inoculum II, microbial inoculum III and microbial inoculum IV, concrete proportioning is see table 4.
Table 4: the proportioning (weight ratio) of Bacterial Complex
Mud: the fresh sludge of sewage treatment plants after concentration, water content is about 80%.
Test method: be after the ratio of 1:1.5 is uniformly mixed with weight ratio by fresh sludge and base-material, builds up 4 sizes, shape, four heap bodies that weight is consistent, each heap body 10 tons.Then by four kinds of bacteria agents in 2 ‰ ratio (weight ratio, with fresh sludge and base-material total amount) uniform stirring in four of correspondence heap bodies.Every day observes temperature variation, detects the change of heap body moisture content simultaneously, draws change curve, as shown in Figure 2.
As can be seen from Figure 2, to adding four of different microbial inoculum process heap bodies, within continuous 11 days, carry out temperature survey, the heap body quick heating of process 1 and process 4, temperature variation is comparatively large, and process 1 and the heap temperature of process 2 when being elevated to 52 DEG C hardly in rising.Process 3 and process 4 compare, and process 4 is best, and same time temperature raises the fastest, can evaporate moisture in heap body fast, for biological dewatered, are best bacteria agents.
In above-mentioned experiment through biological dewatered 11 days time, the material getting each heap body carries out water content detection respectively, and its different microbial inoculum produces heat and evaporates the situation of moisture as table 4.
Table 5: different microbial inoculum is to the comparison of heap body water evaporation quantity
| Title | Microbial inoculum I | Microbial inoculum II | Microbial inoculum III | Microbial inoculum IV |
| Biological dewatered front moisture content | 50% | 50% | 50% | 50% |
| The water content of biological dewatered 11 days | 37% | 34% | 31% | 29% |
| Vaporize water component | 13% | 16% | 19% | 21% |
As can be seen from Table 5, microbial inoculum IV vaporize water component is the highest, and the water content of 50% can be reduced to 29% in 11 days biological drying times, dehydration rate reaches about 40%, and the effectiveness comparison that anhydrates is obvious.Therefore, microbial inoculum of the present invention adopts the composite fungus agent mixed by bacillus acidocldarius, thermophilic actinomycete, thermotolerant yeast bacterium, deodorizing bacterium, and the weight ratio between them is as follows: bacillus acidocldarius: thermophilic actinomycete: thermotolerant yeast bacterium: deodorizing bacterium is 6:6:5:3.
2., the simultaneous test of microbial inoculum IV addition
In actual production process, the usage quantity of microbial inoculum is related to the height of cost of disposal, in order to study the effect of microbial inoculum usage quantity to sludge drying water evaporation quantity, we have carried out the test of different usage quantity transpiring moisture effect to above-mentioned selected microbial inoculum IV, the mummification cycle is 11 days, and its result is as shown in table 6.
As can be seen from Table 6, when microbial inoculum usage quantity is more than 2 ‰, water evaporation quantity no significant difference.Under the prerequisite considering processing cost, the reasonable employment amount of microbial inoculum IV is best between 2 ‰ ~ 2.5 ‰ (weight ratios).
Table 6: the comparison that the different usage quantity of microbial inoculum IV is evaporated moisture
| Consumption (weight ratio) | Water content before mummification | Water content after mummification | Water evaporation quantity |
| 1.5‰ | 50% | 32% | 18% |
| 2‰ | 50% | 29% | 21% |
| 2.5‰ | 50% | 28% | 22% |
| 3‰ | 50% | 28% | 22% |
From above-mentioned each experiment, (1) sludge organism drying technique utilizes the bioenergy that in microorganism high-temperature aerobic fermentation process, organic matter degradation produces, and coordinates forced ventilation to promote the evaporative removal of moisture, thus realize the quick mummification of mud.Test the Bacterial Complex that the microbial inoculum IV screened is four kinds of strain culturing such as collection mesophilic bacteria, high temperature bacterium etc.(2) when microbial inoculum usage quantity is more than 2 ‰, water evaporation quantity no significant difference.Under the prerequisite considering processing cost, the reasonable employment amount of microbial inoculum IV is best between 2 ‰ ~ 2.5 ‰ (weight ratios).(3) because sludge organism mummification is the object utilizing bioenergy that in microorganism high-temperature aerobic fermentation process, organic matter degradation produces to reach transpiring moisture, therefore to carry out ventilation oxygenating according to temperature variations in heap body in whole drying process in good time, allow the active dimensions of biomass be held in higher level.
Embodiment
embodiment one
Sludge organism drying and other treatment of the present invention is water ratio after concentration be 76% ~ 84% fresh sludge carry out drying and other treatment process.Fresh sludge 3000kg after directly learning from else's experience concentration from sewage treatment plants in the present embodiment, its water ratio is 80% after testing.The indices of this fresh sludge refers to table 7; In addition, wherein also organic substance and colibacillus, worm's ovum etc. is in large quantities contained.
Table 7: main harmful substance contents in fresh sludge.
| Title | Mercury (Hg) | Arsenic (As) | Plumbous (Pb) | Cadmium (Cd) | Chromium (Cr) |
| Content | 0.322 | 10.26 | 60.2 | 1.23 | 82.6 |
The biological dewatered process of mud of the present invention includes following steps:
A, allotment fresh sludge water ratio: by above-mentioned water ratio be 80% fresh sludge and water ratio be 30% base-material be uniformly mixed by 1: 1.5 weight ratio, obtain the compound that water ratio is 50%.Select simultaneously water ratio be 30% base-material 4500 kg.The dewatered sludge after sludge drying process preferentially selected by this base-material.When first time uses, the dewatered sludge after material (as loess or lime-ash etc.) the replacement sludge drying process that water content is suitable can be selected.In the present embodiment, base-material selects the mixed resin of loess and lime-ash to replace dewatered sludge, and this mixed resin weighs 4500 kg, and water ratio is 30%.The theoretical analysis, fresh sludge and the mixed water ratio of base-material are 50%.And the carbon-nitrogen mass ratio simultaneously detected in compound, and control its carbon-nitrogen mass ratio between 24 ~ 26:1, within the scope of this carbon-nitrogen mass ratio, be conducive to microbial decomposition organism, if carbon-nitrogen ratio is excessive, the Decomposition of microorganism is slack-off, is unfavorable for mummification.Its carbon-nitrogen mass ratio is about 25:1 after testing, meets above-mentioned condition.
By above-mentioned water ratio be 80% fresh sludge 3000kg and water ratio be 30% base-material 4500 kg be uniformly mixed, obtain compound 7500 kg; This compound water ratio is 50%; Carbon-nitrogen mass ratio in its substances content is 25:1.
This fresh sludge and being uniformly mixed of base-material carry out mixing process by stirrer in airtight negative pressure space (airtight negative pressure space generally designs according to the size specification of stirrer).In the present embodiment, fresh sludge and base-material are quantitatively transferred to the stirring station be located in airtight negative pressure space respectively by worm conveyor; This airtight negative pressure space is provided with deodoration system, and this deodoration system is used for the foul smell produced in airtight negative pressure space to process, rear discharge up to standard.The foul smell produced in this airtight negative pressure space etc. are by qualified discharge after deodoration system process.By the stirrer in stirring station, fresh sludge and base-material have fully been stirred it and be uniformly mixed technique, the churning time of this stirrer is determined according to stirrer capacity and rotating speed, and usually, be 100 revs/min of stirrers for rotating speed, its churning time can be 60 ~ 90s.Above-mentioned fresh sludge and base-material, after stirrer stirs, obtain compound.
B, interpolation microbial inoculum: in the compound of step a gained, add the Bacterial Complex of 2.0 ‰ ~ 2.5 ‰ of compound weight and mix thoroughly, mummification material must be treated.Above-mentioned compound is delivered to sludge organism mummification groove through material distributing machine.This sludge organism mummification groove (or mummifying pool) can adopt following specification: long × wide × high is 72m × 4.28 m × 2.4m, its day lignin-sludge amount 200t/d.This sludge organism mummification groove is arranged in aerobic fermentation workshop.Its bottom land is equipped with aerating system, and trough is provided with stack turner and the chassis passage (for the operation of stack turner turn trough) that switches tracks, and groove tail is provided with deodorizing extractor fan, generally, can lay the carrying out preparation relevant device of number according to biological dewatered groove.During as arranged 10 biological dewatered grooves, 2 stack turners, 2 chassis that switch tracks can be mated, 4 Aeration fans, 10 deodorizing blower fans.Bacterial Complex 15 kg is added by the ratio of 2.0 ‰ (total amount with compound) in the compound be delivered to by material distributing machine in sludge organism mummification groove, this Bacterial Complex evenly sprays the surface to compound, stirred by stack turner again, so that Bacterial Complex evenly mixes in compound.Mummification material about 7500 kg must be treated through said process.
The fermentation of c, mud, mummification: step b gained treated that mummification stockpile becomes fermentation mummification dust to carry out fermenting, mummification, obtain dewatered sludge.Above-mentionedly treat that mummification material piles dust by the heap machine that turns over again and carries out fermentation mummification in sludge organism mummification groove.The height of the fermentation mummification dust piled is not more than 2m, is widely not more than 4m.Then this dust turned over throwing once and pile in heaps by the heap machine that turns over every day, turn at every turn and throw miles of relative movement and be no less than 6m, this turns over the process that namely throwing process is the dynamic compound movement of heap.This aerating system is used for carrying out discontinuous forced ventilation to the mud in biological dewatered groove in sludge fermentation, drying process, is better fermented to make the aerobic fermentation bacterial classification in Bacterial Complex.The above-mentioned fermentation mummification dust piled is while fermentation, mummification, interval is carried out 3 hours by aerating system, (general ventilation time is relevant with the height of dust with interval for the forced ventilation of ventilating 1 hour, when piling high 2m, interval can be adopted 3 hours, ventilate 1 hour), must extremely better ferment to make the bacterial classification of aerobic fermentation.This aerating system includes blower fan, pipeline, valve and Controlling System, and its pipe installation is on bottom land and cell wall.Above-mentioned after the ferment fermentation of mummification material through 11 days, mummification, detect its water ratio and be down to 30%, obtain dewatered sludge and be about 5340kg.This dewatered sludge achieves the minimizing of mud.This dewatered sludge through belt conveyor system automatic transport in stockyard, to do its use, as recycle.Gained dewatered sludge reaches related quality criterion after testing.Concrete data refer to table 8.
Table 8: the detected result of dewatered sludge.
| Test item | Quality index | Detected result |
| Organic massfraction (to dry base), % | ≥45 | 58.9 |
| The massfraction (to dry base) of nitrogen (N), % | / | 2.46 |
| The massfraction (to dry base) of phosphorus (P2O5), % | / | 2.29 |
| The massfraction (to dry base) of potassium (K2O), % | / | 2.64 |
| The massfraction (to dry base) of total nutrient, % | ≥5 | 7.39 |
| The massfraction of moisture, % | ≤30% | 21.2 |
| Potential of hydrogen, pH | 5.5～8.5 | 7.8 |
| Total arsenic (As) (to dry base), mg/kg | ≤15 | 4.6 |
| Total mercury (Hg) (to dry base), mg/kg | ≤2 | 0.074 |
| Total cadmium (Cd) (to dry base), mg/kg | ≤3 | 0.082 |
| Total lead (Pb) (to dry base), mg/kg | ≤50 | 26.7 |
| Total chromium (Cr) (to dry base), mg/kg | ≤150 | 25.3 |
| Induced worm egg death rate, % | ≥95 | 97 |
| Excrement colibacillus group number, individual/g | ≤100 | 75 |
Containing various organic substance, various nutritive element and energy in the dewatered sludge of above-mentioned gained.Following aspect can be widely used in: one is Land_use change, and the organic matter in mud and nutritive element are added to soil; Two is the energy reclaimed by the technology such as anaerobic digestion or burning in mud; Three be by utilize dewatered sludge burn after lime-ash brickmaking realize recycling sludge.
embodiment two
Sludge organism drying and other treatment of the present invention is water ratio after concentration be 76% ~ 84% fresh sludge carry out drying and other treatment process.Fresh sludge 5000kg after directly learning from else's experience concentration from sewage treatment plants in the present embodiment, its water ratio is 82% after testing.The indices of this fresh sludge is roughly the same with upper table 7.The biological dewatered process of mud of the present invention includes following steps:
A, allotment fresh sludge water ratio: by above-mentioned water ratio be 82% fresh sludge 3000kg and water ratio be 30% base-material be uniformly mixed by 1: 1.6 weight ratio, obtain the compound that water ratio is 50%.Base-material selected in the present embodiment is the dewatered sludge in embodiment one, and water ratio is 30%, and weight is 4800 kg, the theoretical analysis, and fresh sludge and the mixed water ratio of base-material are 50%.And the carbon-nitrogen ratio simultaneously detected in compound, its carbon-nitrogen mass ratio 22:1 after testing, this carbon-nitrogen mass ratio is unfavorable for microbial decomposition organism.By add auxiliary material in compound after, make its carbon-nitrogen ratio conformance with standard.The auxiliary material added in the present embodiment is the compound of straw and forage.According to principle of gathering materials on the spot, also stalk can be selected.Add auxiliary material granularity and be not more than 3mm, water ratio is 10% ~ 25%.The addition of auxiliary material can be determined according to the character of the weight of compound, the carbon-nitrogen mass ratio measured and auxiliary material.
By above-mentioned water ratio be 82% fresh sludge 3000kg and water ratio be 30% dewatered sludge 4800 kg stir, the auxiliary material simultaneously adding a certain amount of straw and forage is uniformly mixed, and obtains compound about 7800 kg; This compound water ratio is 50%; Carbon-nitrogen mass ratio in its substances content is in 24 ~ 26:1.
This fresh sludge and being uniformly mixed of base-material carry out mixing process by stirrer in airtight negative pressure space.This airtight negative pressure space is provided with deodoration system, and the foul smell produced in this airtight negative pressure space etc. are by qualified discharge after deodoration system process.Above-mentioned fresh sludge and dewatered sludge and auxiliary material, after stirrer stirs, obtain compound about 7800 kg.
B, interpolation microbial inoculum: in the compound of step a gained, add the Bacterial Complex of 2.5 ‰ of compound weight and mix thoroughly, mummification material must be treated.Bacterial Complex 19.5 kg is added by the ratio of 2.5 ‰ (total amount with compound) in the compound be delivered to by material distributing machine in sludge organism mummification groove, this Bacterial Complex evenly sprays the surface to compound, stirred by stack turner again, so that Bacterial Complex evenly mixes in compound.Mummification material about 7800 kg must be treated through said process.
The fermentation of c, mud, mummification: step b gained treated that mummification stockpile becomes fermentation mummification dust to carry out fermenting, mummification, obtain dewatered sludge.Above-mentionedly treat that mummification material piles dust by the heap machine that turns over again and carries out fermentation mummification in sludge organism mummification groove.This dust to be turned over throwing once and pile in heaps by the heap machine that turns over by every day.The above-mentioned fermentation mummification dust piled, while fermentation, mummification, carries out interval 3 hours by aerating system, and the forced ventilation of ventilating 1 hour must extremely better be fermented to make the bacterial classification of aerobic fermentation.This aerating system includes blower fan, pipeline, valve and Controlling System, and its pipe installation is on bottom land and cell wall.Above-mentioned after the ferment fermentation of mummification material through 12 days, mummification, detect its water ratio and be down to 28%, obtain dewatered sludge and be about 5400kg.This dewatered sludge achieves the minimizing of mud.This dewatered sludge through belt conveyor system automatic transport in stockyard, to do its use, as recycle.Gained dewatered sludge reaches related quality criterion after testing.Concrete data and table 8 data are close.
Containing various organic substance, various nutritive element and energy in the dewatered sludge of above-mentioned gained.Following aspect can be widely used in: one is Land_use change, and the organic matter in mud and nutritive element are added to soil; Two is the energy reclaimed by the technology such as anaerobic digestion or burning in mud; Three be by utilize dewatered sludge burn after lime-ash brickmaking realize recycling sludge.
Claims (10)
1. sludge organism drying and other treatment is water ratio after concentration be 76% ~ 84% fresh sludge carry out drying and other treatment process, it is characterized in that: it includes following steps:
A, allotment fresh sludge water ratio: the base-material being 28% ~ 32% by fresh sludge and water ratio is uniformly mixed by 1: 1.4 ~ 1.6 weight ratios, obtains compound;
B, interpolation microbial inoculum: in the compound of step a gained, add the microbial inoculum of 2.0 ‰ ~ 2.5 ‰ of compound weight and mix thoroughly, mummification material must be treated;
The fermentation of c, mud, mummification: step b gained treated that mummification stockpile becomes fermentation mummification dust to carry out fermenting, mummification, obtain dewatered sludge.
2. sludge organism drying and other treatment according to claim 1, is characterized in that: described microbial inoculum is Bacterial Complex, is undertaken mixing by the weight ratio of 6:6:5:3 by bacillus acidocldarius, thermophilic actinomycete, thermotolerant yeast bacterium, deodorizing bacterium.
3. sludge organism drying and other treatment according to claim 2, is characterized in that: the carbon-nitrogen mass ratio in described compound is 24 ~ 26: 1.
4. sludge organism drying and other treatment according to claim 3, is characterized in that: described carbon-nitrogen mass ratio realizes by adding auxiliary material and stirring in step a; This auxiliary material is stalk, straw or the straw or like vegetable that carbon content is high.
5. sludge organism drying and other treatment according to claim 4, is characterized in that: the water ratio of described dewatered sludge is 28% ~ 32%.
6. sludge organism drying and other treatment according to claim 5, is characterized in that: described fermentation mummification dust is overthrown once every day, and its fermentation, drying time are 10 ~ 12 days.
7. sludge organism drying and other treatment according to claim 6, is characterized in that: dewatered sludge selected by described base-material.
8. the sludge organism drying and other treatment according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, is characterized in that: it is characterized in that: being uniformly mixed in step a is carried out in airtight negative pressure space; This airtight negative pressure space is provided with deodoration system; This deodoration system is used for the foul smell produced in airtight negative pressure space to carry out processing and discharging.
9. sludge organism drying and other treatment according to claim 8, is characterized in that: above-mentioned steps b, c carry out in sludge organism mummification groove; This sludge organism mummification groove is arranged in aerobic fermentation workshop; Its bottom land is equipped with aerating system, and groove tail is provided with deodorizing extractor fan; This aerating system is used for carrying out discontinuous forced ventilation to biological dewatered groove, is better fermented to make the aerobic fermentation bacterial classification in Bacterial Complex.
10. the dewatered sludge after claim 1 ~ 9 art breading, is characterized in that: this dewatered sludge is for supplementary soil or for the energy making brick body raw material or produce for energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700581.XA CN104529112B (en) | 2014-11-28 | 2014-11-28 | Sludge organism drying method for treating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410700581.XA CN104529112B (en) | 2014-11-28 | 2014-11-28 | Sludge organism drying method for treating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104529112A true CN104529112A (en) | 2015-04-22 |
| CN104529112B CN104529112B (en) | 2019-09-03 |
Family
ID=52844806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410700581.XA Expired - Fee Related CN104529112B (en) | 2014-11-28 | 2014-11-28 | Sludge organism drying method for treating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104529112B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891759A (en) * | 2015-05-15 | 2015-09-09 | 刘婷 | Sludge high-temperature dehydrating agent |
| CN104926053A (en) * | 2015-05-15 | 2015-09-23 | 刘婷 | Sludge treatment method |
| CN104926052A (en) * | 2015-05-15 | 2015-09-23 | 刘婷 | Recyclable sludge treatment method |
| CN105000776A (en) * | 2015-07-03 | 2015-10-28 | 天津霍普环保科技有限公司 | Sludge deep-dewatering bio-drying integrated treatment method |
| CN105217912A (en) * | 2015-09-14 | 2016-01-06 | 广州市净水有限公司 | A kind of municipal sludge efficient energy-saving quick biological drying technology |
| CN106865947A (en) * | 2017-03-17 | 2017-06-20 | 华南理工大学 | A kind of sludge drying processing method |
| CN108178484A (en) * | 2018-01-11 | 2018-06-19 | 临沂清宇环境资源综合利用研究院有限公司 | A kind of method that sludge combined stalk powder carries out the pre- desiccation of biology |
| CN109081542A (en) * | 2018-09-06 | 2018-12-25 | 江苏康乾环境科技有限公司 | Method for reducing influence of sludge viscous zone on sludge dewatering by using total mixed flow reactor |
| CN110156498A (en) * | 2019-04-30 | 2019-08-23 | 江苏思威博生物科技有限公司 | A kind of feces of livestock and poultry high temperature desiccation microbial inoculum and its application method |
| CN110591974A (en) * | 2019-10-17 | 2019-12-20 | 湖南洁源生物能源科技有限公司 | Preparation and use method of thermophilic microbial agent for leather sludge drying |
| CN112851064A (en) * | 2021-03-04 | 2021-05-28 | 天津科技大学 | Method for reducing odor release of sludge dried finished product |
| CN114804936A (en) * | 2022-05-10 | 2022-07-29 | 北京沃土天地生物科技股份有限公司 | Biological drying treatment method for organic solid waste |
| CN115490408A (en) * | 2022-09-14 | 2022-12-20 | 青岛绿洁坤环保科技有限公司 | Method for optimizing municipal sludge biological drying technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708936A (en) * | 2009-11-06 | 2010-05-19 | 海南福君生态环境科技有限公司 | Method for treating sludge with heavy metals exceeding standard |
| CN102372407A (en) * | 2010-08-13 | 2012-03-14 | 袁登辉 | Biological drying method of municipal domestic sludge |
| CN103467149A (en) * | 2013-09-17 | 2013-12-25 | 厦门绿标生物科技有限公司 | Method for processing sludge by using complex microbial agent |
| CN103496834A (en) * | 2013-09-30 | 2014-01-08 | 河南金谷实业发展有限公司 | Dehydration method for reducing water content of sludge in microbial fermentation way |
| CN103805304A (en) * | 2014-02-10 | 2014-05-21 | 汪兴华 | Manufacturing method of sludge biomass compact briquette fuel |
-
2014
- 2014-11-28 CN CN201410700581.XA patent/CN104529112B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708936A (en) * | 2009-11-06 | 2010-05-19 | 海南福君生态环境科技有限公司 | Method for treating sludge with heavy metals exceeding standard |
| CN102372407A (en) * | 2010-08-13 | 2012-03-14 | 袁登辉 | Biological drying method of municipal domestic sludge |
| CN103467149A (en) * | 2013-09-17 | 2013-12-25 | 厦门绿标生物科技有限公司 | Method for processing sludge by using complex microbial agent |
| CN103496834A (en) * | 2013-09-30 | 2014-01-08 | 河南金谷实业发展有限公司 | Dehydration method for reducing water content of sludge in microbial fermentation way |
| CN103805304A (en) * | 2014-02-10 | 2014-05-21 | 汪兴华 | Manufacturing method of sludge biomass compact briquette fuel |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926053A (en) * | 2015-05-15 | 2015-09-23 | 刘婷 | Sludge treatment method |
| CN104926052A (en) * | 2015-05-15 | 2015-09-23 | 刘婷 | Recyclable sludge treatment method |
| CN104891759A (en) * | 2015-05-15 | 2015-09-09 | 刘婷 | Sludge high-temperature dehydrating agent |
| CN105000776A (en) * | 2015-07-03 | 2015-10-28 | 天津霍普环保科技有限公司 | Sludge deep-dewatering bio-drying integrated treatment method |
| CN105217912A (en) * | 2015-09-14 | 2016-01-06 | 广州市净水有限公司 | A kind of municipal sludge efficient energy-saving quick biological drying technology |
| CN106865947B (en) * | 2017-03-17 | 2020-09-22 | 华南理工大学 | Sludge drying treatment method |
| CN106865947A (en) * | 2017-03-17 | 2017-06-20 | 华南理工大学 | A kind of sludge drying processing method |
| CN108178484A (en) * | 2018-01-11 | 2018-06-19 | 临沂清宇环境资源综合利用研究院有限公司 | A kind of method that sludge combined stalk powder carries out the pre- desiccation of biology |
| CN109081542A (en) * | 2018-09-06 | 2018-12-25 | 江苏康乾环境科技有限公司 | Method for reducing influence of sludge viscous zone on sludge dewatering by using total mixed flow reactor |
| CN110156498A (en) * | 2019-04-30 | 2019-08-23 | 江苏思威博生物科技有限公司 | A kind of feces of livestock and poultry high temperature desiccation microbial inoculum and its application method |
| CN110591974A (en) * | 2019-10-17 | 2019-12-20 | 湖南洁源生物能源科技有限公司 | Preparation and use method of thermophilic microbial agent for leather sludge drying |
| CN112851064A (en) * | 2021-03-04 | 2021-05-28 | 天津科技大学 | Method for reducing odor release of sludge dried finished product |
| CN114804936A (en) * | 2022-05-10 | 2022-07-29 | 北京沃土天地生物科技股份有限公司 | Biological drying treatment method for organic solid waste |
| CN114804936B (en) * | 2022-05-10 | 2023-08-11 | 北京沃土天地生物科技股份有限公司 | Biological drying treatment method for organic solid waste |
| CN115490408A (en) * | 2022-09-14 | 2022-12-20 | 青岛绿洁坤环保科技有限公司 | Method for optimizing municipal sludge biological drying technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104529112B (en) | 2019-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104529112A (en) | Sludge bio-drying treatment technology | |
| CN202988933U (en) | Sludge treatment land resource utilization system | |
| CN101973795B (en) | Sludge aerobic composting method by utilizing composting compound microbial inoculum | |
| CN103694010B (en) | A kind of Ultrahigh-temperaturaerobic aerobic fermentation method for sludge and application thereof | |
| CN101618934B (en) | Sludge dry powder and preparation method thereof | |
| CN101333510B (en) | Method for processing sludge and preparing bio organic fertilizer and special leaven thereof | |
| CN108002871A (en) | A kind of method that rubbish from cooking makes green fertilizer material | |
| CN104370582B (en) | A kind of organic waste odorless aerobic compost method | |
| CN102249508A (en) | Method for comprehensively utilizing sludge in recycling mode | |
| CN102910790B (en) | Rapid tank type biological drying device and method for sludge | |
| CN202482231U (en) | Device for preparing fertilizer by aerobic fermentation of organic solid waste | |
| CN106746428A (en) | A kind of high-temperature aerobic fermentation method for sludge treatment and device | |
| CN102092918A (en) | Biological drying method for treating urban domestic dewatered sludge | |
| CN101597532A (en) | A kind of sludge fuel and preparation method thereof | |
| CN104211460A (en) | Fast aerobic composting reaction device and application thereof | |
| CN113402317B (en) | Method for reducing carbon emission through cooperation of hydrothermal carbonization and organic solid waste high-temperature fermentation | |
| CN103664255A (en) | Organic waste facultative aerobic fermentation composting treatment process | |
| CN102515886B (en) | Process for producing biological bacterial fertilizer by taking domestic sewage plant dewatered sludge as raw material | |
| CN107338200B (en) | High-temperature composting method without adding auxiliary materials and adjusting carbon-nitrogen ratio | |
| CN206417986U (en) | A kind of high-temperature aerobic fermentation sludge treatment equipment | |
| CN102617200B (en) | Method for composing sludge by adding mineralized waste | |
| CN103803771A (en) | Method for disposing urban sludge by using earthworms | |
| CN205436606U (en) | Reaction bed of microbiological treatment oiliness waste residue | |
| CN103896641B (en) | Food-borne organic waste degrading bacteria carrier | |
| Dong et al. | Manure treatment and recycling technologies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Ritu Inventor after: Wu Enqi Inventor before: Liu Jingnan Inventor before: Liu Ziteng |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20170421 Address after: 100081 Beijing, Zhongguancun, South Street, No. 27, No. Applicant after: Wu Ritu Address before: 410000 Hunan, Hunan Normal University, Changsha Tianma student apartment building, room 19, No. 602 Applicant before: Liu Ziteng Applicant before: Liu Jingnan |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190520 Address after: 100081 No. 27 South Street, Zhongguancun, Haidian District, Beijing Applicant after: MINZU University OF CHINA Address before: 100081 No. 27 South Street, Zhongguancun, Haidian District, Beijing Applicant before: Wu Ritu |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190903 Termination date: 20211128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |