CN105693052A - Dyeing sludge deep dehydrating-drying treatment device and process - Google Patents
Dyeing sludge deep dehydrating-drying treatment device and process Download PDFInfo
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- CN105693052A CN105693052A CN201610144018.8A CN201610144018A CN105693052A CN 105693052 A CN105693052 A CN 105693052A CN 201610144018 A CN201610144018 A CN 201610144018A CN 105693052 A CN105693052 A CN 105693052A
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- 239000010802 sludge Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004043 dyeing Methods 0.000 title claims abstract description 38
- 238000001035 drying Methods 0.000 title claims abstract description 36
- 230000008569 process Effects 0.000 title abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000007639 printing Methods 0.000 claims description 35
- 238000000926 separation method Methods 0.000 claims description 23
- 239000008187 granular material Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000010801 sewage sludge Substances 0.000 claims description 11
- 241000233866 Fungi Species 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000001413 cellular effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002054 inoculum Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000011358 absorbing material Substances 0.000 claims description 2
- 230000003311 flocculating effect Effects 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract 7
- 239000002245 particle Substances 0.000 abstract 3
- 239000000126 substance Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 10
- 230000018044 dehydration Effects 0.000 description 9
- 238000006297 dehydration reaction Methods 0.000 description 9
- 239000010865 sewage Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 230000003750 conditioning effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
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- 238000005265 energy consumption Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002671 adjuvant Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
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- 239000002918 waste heat Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
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- 239000002689 soil Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 210000001789 adipocyte Anatomy 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
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- 238000007385 chemical modification Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
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- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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- 239000002351 wastewater Substances 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
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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- 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)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a dyeing sludge deep dehydrating-drying treatment device and process. The device comprises a dyeing sludge storage tank, a back-mixing machine, a medium stirrer and a medium dryer, wherein sludge is stored in the storage tank and enters the medium stirrer after being subjected to biological pretreatment and mixed with a water absorption medium, the water absorption medium and the sludge are vibrated, sieved and separated through the medium stirrer, the separated water absorption medium enters the medium dryer, moisture in the water absorption medium is evaporated though the medium dryer, the water absorption medium is dried by the medium dryer, the heated water absorption medium enters the medium stirrer again, the water absorption medium and the sludge are vibrated, sieved and separated through the medium stirrer again, the moisture content of separated dry sludge particles is reduced to be 25%, the dry sludge particles are transported outwards and packaged as finished dry sludge particles, and part of sludge with the moisture content of 12-20% in the medium stirrer enters the back-mixing machine to be mixed with original sludge with the moisture content of 80-85%. The device is small in occupied area, low in investment and low in operation cost.
Description
Technical field
The present invention is a kind of printing and dyeing sludge deep dehydration-drying and other treatment equipment and technique, belongs to the innovative technology of printing and dyeing sludge deep dehydration-drying and other treatment equipment and technique。
Background technology
At present, sewage treatment plant's mud extraction moisture content, all about 80%, is disposed if needing outward transport to process, then cost of transportation is higher, and advanced treatment process of sludge can by sludge dewatering to moisture content less than 60%, it is possible to reduce about 50% freight charges。The large quantity of moisture contained in mud is the bottleneck of restriction specific resistance to filtration, the method reducing mud moisture content conventional at present has following several, one is chemical conditioning+mechanical deep mummification dewatering process, employing is had to add after pressed powder modifiies through frame filter press filter pressing at present, make dehydrated sludge moisture content below 60% and frame filter press dewatering time 2～4 hours, strainer plate material is PVC, for improving filter pressing pressure, frame filter press increases by one layer of diaphragm of rubber or plastic diaphragms, in barrier film, moment (general 3～5 minutes) passes into 0.6～0.8Mpa compression air or water, press dehydration to mud moment, moisture percentage in sewage sludge is made to be reduced to about 60%, but the service life of barrier film generally only has about 6 months, need after diaphragm failures to change monoblock filter plate。The pressed powder amount added is relatively big, adds solids content in mud, reduces the organic content in mud, calorific value etc.；To add FeCl3For example, cause that the sludge product of mummification is difficult to incineration disposal。Another kind is mud used heat/waste heat degree of depth mummification dewatering process, utilizes waste heat flue gas, steam dewatered sludge, removes moisture content with heat energy, is " with hot heat exchange "。Mummification dehydration technique advantage includes sludge character in processing procedure and stablizes, not easily bonds, is not likely to produce biogas, and the combustion of the gas difficulty of generation is non-explosive, and after mummification, moisture percentage in sewage sludge is lower than 10%, and volume reduces a lot, takes up an area less, easy to control, safe and stable。But used heat waste gas mummification, causes that mummification exhausted air quantity is relatively big, and processing cost is higher, and investment is big, and operating cost is high, management and operating technology is had higher requirements simultaneously。Suitable in soil, nervous, developed area large-scale wastewater treatment plant or multiple middle or small sewage treatment mud of relatively concentrating focuses on。
Summary of the invention
It is an object of the invention to consider the problems referred to above and a kind of simple in construction, convenient and practical printing and dyeing sludge deep dehydration-drying and other treatment equipment are provided。Floor space of the present invention is little, small investment, and operating cost is cheap。
Another object of the present invention is to provide a kind of printing and dyeing sludge deep dehydration-drying and other treatment technique。The process technique overall process of the present invention is closed, and operating environment is run at the scene with close friend, to surrounding enviroment non-secondary pollution；Without adding any chemical substance and adjuvant in sludge drying implementation process, do not increase the solid content of mud, be conducive to follow-up printing and dyeing sludge to process and dispose。
The technical scheme is that the printing and dyeing sludge of present invention deep dehydration-drying and other treatment equipment, include printing and dyeing sludge storage tank, back-mixing machine, medium agitator, medium exsiccator, wherein mud is stored in storage tank, mud in mud storage tank is through Biological Pretreatment and enters medium agitator with water sucting medium after mixing, medium agitator carries out water sucting medium and mud to shake and sieve separation, water sucting medium after separation enters medium exsiccator, medium exsiccator evaporates the moisture in water sucting medium, again water sucting medium is heated simultaneously, water sucting medium after heating enters again medium agitator, medium agitator carries out water sucting medium and mud to shake and sieve separation again, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule outward transport packaging, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mix with the primary sludge of moisture content 80%～85%。
Printing and dyeing sludge deep dehydration-drying and other treatment the technique of the present invention, comprises the steps:
1) with microorganism fungus kind, the printing and dyeing sludge that moisture content is 80%～85% is carried out pretreatment；
2) carry out pretreated printing and dyeing sludge to mix in back-mixing device with water sucting medium；
3) mixed printing and dyeing sludge enters medium agitator with water sucting medium, sieve simultaneously, utilize density different, water sucting medium and mud are carried out shaking and sieve separation, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mixes with the mud of moisture content 80%～85%；Water sucting medium after separation enters medium exsiccator, and moisture is evaporated, and again water sucting medium is heated simultaneously, and the water sucting medium after heating enters again medium agitator；
4) after the water sucting medium after heating enters medium agitator, separated mud mixes with water sucting medium again, mud is through physical reactions thorough breaking cellular wall further, in mud, moisture content automatically flows out and is absorbed by water sucting medium, sieve simultaneously, utilize density different, water sucting medium and mud are carried out shaking and sieve separation；Meanwhile,
Moisture content is enter medium exsiccator with the mud that moisture content is 80%～85% after the mud of 12-20% mixes in back-mixing machine；
5) step 3 is repeated) to step 4), so circulate。
The invention have the advantages that the mud of moisture content 80%～85% is added biological inoculum does pretreatment, medium agitator is entered with water sucting medium after the mud of pretreatment mixes, medium agitator carries out water sucting medium and mud to shake and sieve separation, water sucting medium after separation enters medium exsiccator, medium exsiccator evaporates the moisture in water sucting medium, again water sucting medium is heated simultaneously, water sucting medium after heating enters again medium agitator, medium agitator carries out water sucting medium and mud to shake and sieve separation again, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mix with moisture content medium agitator left and right mud。Finished product dewatered sludge granule may be used for burning electricity generation fuel, and present invention process floor space is little, small investment, and operating cost is cheap；Processing technique overall process to close, operating environment is run at the scene with close friend, to surrounding enviroment non-secondary pollution；Without adding any chemical substance and adjuvant in sludge drying implementation process, do not increase the solid content of mud；Mud decrement is obvious, is substantially reduced mud freight。The exhausted air quantity produced is few, and tail gas is easily handled。Suitable in " treatment in situ " in factory of sewage treatment plant。Project investment is medium, management and operating technology is had higher requirements simultaneously。Suitable in soil, nervous, developed area large-scale wastewater treatment plant or multiple middle or small sewage treatment mud of relatively concentrating focuses on。The product of the present invention can burn acquisition energy, in order to make full use of waste heat, it is possible to residual heat collection is used for carrying out printing and dyeing sludge mummification。
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of sludge drying treatment equipment of the present invention。
Fig. 2 is the flow chart that sludge drying of the present invention processes technique。
Detailed description of the invention
Embodiment:
The fundamental diagram of sludge drying treatment equipment of the present invention is as shown in Figure 1, printing and dyeing sludge deep dehydration-drying and other treatment the equipment of the present invention, include printing and dyeing sludge storage tank, back-mixing machine, medium agitator, medium exsiccator, wherein mud is stored in storage tank, mud in mud storage tank is through Biological Pretreatment and enters medium agitator with water sucting medium after mixing, medium agitator carries out water sucting medium and mud to shake and sieve separation, water sucting medium after separation enters medium exsiccator, medium exsiccator evaporates the moisture in water sucting medium, again water sucting medium is heated simultaneously, water sucting medium after heating enters again medium agitator, medium agitator carries out water sucting medium and mud to shake and sieve separation again, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule outward transport packaging, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mix with the primary sludge of moisture content 80%～85%。
In the present embodiment, above-mentioned mud storage tank includes storage tank and the mixing drum wind apparatus being installed in storage tank。
In the present embodiment, above-mentioned back-mixing machine includes tank body and the stirring rod being installed in tank body and separating knife。The major function of back-mixing machine is that dewatered sludge and the wet mud that moisture content is 80%～85% of moisture content 12-20% are utilized specially designed stirring rod and separating knife back mixing, thoroughly modified wet mud high for viscosity is disintegrated。
In the present embodiment, the major function of above-mentioned mud storage tank is to make full use of the mud storage time of staying and air mixing, produces aerobic reaction, mud is carried out physical modification。Mainly it is made up of storage tank and mixing drum wind apparatus。
The major function of above-mentioned medium exsiccator is to carry out comprehensive air-dry with hot blast to the water sucting medium after water suction, then cycling and reutilization。
Additionally, back-mixing machine, medium agitator, medium exsiccator are also associated with dust pelletizing system。
Additionally, the waste water and gas produced in back-mixing machine, medium agitator, medium exsiccator, dust pelletizing system processing procedure etc. are discharged after being processed by deodorization dedusting filter again, deodorization dedusting filter is biological deodorizing dust removal and filtration system。
Printing and dyeing sludge deep dehydration-drying and other treatment the technique of the present invention, comprises the steps:
1) with microorganism fungus kind, the printing and dyeing sludge that moisture content is 80%～85% is carried out pretreatment；
2) carry out pretreated printing and dyeing sludge to mix in back-mixing device with water sucting medium；
3) mixed printing and dyeing sludge enters medium agitator with water sucting medium, sieve simultaneously, utilize density different, water sucting medium and mud are carried out shaking and sieve separation, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mixes with the mud of moisture content 80%～85%；Water sucting medium after separation enters medium exsiccator, and moisture is evaporated, and again water sucting medium is heated simultaneously, and the water sucting medium after heating enters again medium agitator；
4) after the water sucting medium after heating enters medium agitator, separated mud mixes with water sucting medium again, mud is through physical reactions thorough breaking cellular wall further, in mud, moisture content automatically flows out and is absorbed by water sucting medium, sieve simultaneously, utilize density different, water sucting medium and mud are carried out shaking and sieve separation；Meanwhile, moisture content is enter medium exsiccator with the mud that moisture content is 80%～85% after the mud of 12-20% mixes in back-mixing machine；
5) step 3 is repeated) to step 4), so circulate。
In the present embodiment, above-mentioned steps 1) in microorganism fungus kind be the biological inoculum with flocculating function；Step 1) in sludge filter press, carry out pretreatment；
In the present embodiment, above-mentioned steps 2) in water sucting medium be with cross linked polyacrylate with silicate for intermingling material, there is certain hardness。
In the present embodiment, above-mentioned steps 2) in water sucting medium be prepare into the spherical of 4～7mm or oval porous polarity high-efficiency water-absorbing material。
In the present embodiment, above-mentioned steps 2) in, printing and dyeing sludge and 10% water sucting medium mix, water sucting medium quickly absorbs water, and moisture percentage in sewage sludge is reduced to about 30%。
In the present embodiment, above-mentioned steps 3) in, water sucting medium is heated to 150-200 DEG C, and the water sucting medium after heating enters again medium agitator。
In the present embodiment, above-mentioned steps 4) in, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mixes with the mud of moisture content 80%～85%。
The operation principle of the present invention is as follows: owing to after mechanical dehydration, moisture percentage in sewage sludge is approximately in 80%, and such mud stickiness is high, and double; two property of mud cell, pinning inside and outside moisture content, cause that subsequent handling dehydration is difficult。Utilize the preprocessor that " biodegradation " dries as sludge deep, this kind of microorganism fungus kind can be degraded solidss such as being attached to the protein of mud cell, fat, carbohydrate and other inorganic substances, effectively the surface of mud cell can be softened breaking cellular wall, so heavily make solid water be easier to separate in follow-up program。This biodegradation can be used for the muddy water of moisture content 97%, makes mud-water separation speed fast, shortens the time of mud-water separation。
A small amount of tail gas containing ammonia nitrogen and a small amount of dust that the foul smell that produces in sludge pretreatment process of the present invention, medium agitator and drying machine produce all just discharge after biological deodorizing dedusting filter processes and meet national standard。Biological deodorizing dedusting filter includes sack cleaner and filters and biological deodorizing equipment。
The dewatered sludge granule moisture content separated is down to less than 25%, drying sludge rate can adjust moisture percentage in sewage sludge (30% to 20%) scope by different demands, the Organic substance of mud is because being stablized in processing procedure, dry run is not because adding any compound simultaneously, and in mud, organic substance is not entirely destroyed。Therefore dried sludge calorific value does not subtract, maintain the calorific value after SAP biodegradation, it is adaptable to compost, building materials, auxiliary fuel or burning electricity generation etc.。
The sewage produced when preheating sludge handling process can be back to sewage treatment plant and process。
Whole system of the present invention adopts all-sealed device and fully automatic integral to control and monitoring。
The odorless technology of this technique of present invention application is a kind of advanced dry technology, and dried belongs to physical change, lossless calorific value, therefore chemical fertilizer and burning are used as in the mud resourcebility regeneration after dehydration。Unit integration, few because taking up an area, operate safety and stability, it is not necessary to change raw sewage factory dewatering system, after can coordinating and be applicable to sludge dewatering, moisture content 80% mud that wets processes, and without two English and foul smell discharge, is relatively suitable for sewage treatment plant's employing of contiguous residential block。
Sludge drying treatment equipment and the technique of the present invention have the advantage that advantage:
(1) there is the mud high effective drier of unique texture advantage, by broken agitating device, increase the also contacts area of mud, overall heat-transfer coefficient is made to be increased to 2～3 times of common dryer, the heat of hot blast is fully used, directly contacted with mud by hot run test, make drying sludge and form little granule；
(2) whole technical process is run under sealing condition, and during sludge drying, the gas of release is respectively through high temperature incineration, and dedusting depassing unit eliminates, and complies fully with the requirement that cleaning produces；
(3) if, with the dry mud of thermoelectricity fume afterheat, the utilization rate not only making steam power plant's heat energy adds 2%, the more important thing is when not increasing new energy consumption, mud is made to finally give recycling treatment, by " treatment of wastes with processes of wastes against one another ", " recycling economy " and the target of " energy-saving and emission-reduction " are really achieved it；
(4) capital equipment production domesticization, not only equipment investment and operating cost are significantly less than domestic and international prior art, and easy and simple to handle, run safety and stability, clean environment firendly；
(5) burning can make the volume of excess sludge reduce to minimizing, and the final material needing to dispose is little, the problem being absent from heavy metal ion；
(6) Treatment of Sludge speed is fast, it is not necessary to long term storage；
(7) dried mud can on-site incineration, it is not necessary to long-distance transportation；
(8) can recover energy for generating and heat supply。
The mud of moisture content 80% is adopted biodegradation pretreatment by the present invention, being separated with predrying dry mud mix and blend by double-layer barrel Double helix paddle blender can be 20-25% sludge drying to moisture content, " water suction meson " is utilized to make deep dehydration adsorbing material, moisture percentage in sewage sludge can be reduced to 12-15%, after mummification, mud puts into blender back mixing, it is possible to obtain fuel preferably。This technology drying process is not added with any chemical reagent and carries out sewage sludge harmlessness decrement, thus realizing the comprehensive utilization of energy and the final decrement harmlessness disposing of mud, there is " on the spot decrement ", " on the spot mummification ", the advantage such as " on the spot the utilization of resources " and " treatment in situ "。Without adding any chemical substance and adjuvant in sludge drying implementation process, do not increase the solid content of mud；Mud decrement is obvious, is substantially reduced mud freight；This technical matters can process urban domestic sewage sludge and industrial sludge, and Technology belongs to physical processing techniques, dispose for mud subsequent treatment to provide and be likely to direction widely, this technology can be made two stage treatment by moisture content 92% mud, to the dry mud of moisture content 25%, moisture percentage in sewage sludge can be turned down further and reach 12-15%, it is provided that is sent directly into thermal decomposition fluid bed and burns, by local mud heat Calculation, can design to " Energy Sources Equilibrium " level。Lime-ash after burning can do multipurpose comprehensive utilization of resources, is really achieved the target of innoxious, stabilisation, minimizing and the utilization of resources。
Chemical conditioning traditional at present+mechanical deep dehydration mode mainly has following several ways, and wherein filter press is selected more。Comparison of Energy Consumption is as follows:
Chemical conditioning+mechanical deep dehydration compares
Chemical modification price modification pretreatment+mechanical deep dehydration technique can be 50-60% (only partial sludge character can be only achieved 45-50% preferably) the sludge press filtration of moisture content 80% to moisture content；The technique of the present invention can be 25-40% the sludge drying of moisture content 80% to moisture content, the cost of following two kinds of techniques of relative analysis (wherein without adding technology mud with moisture content after mummification for 40% calculating)。
" chemical conditioning+mechanism filter-pressing " is as follows with mummification dewatering process Comparison of Energy Consumption of the present invention:
As can be seen from the above table, consider mud decrement and cost of transportation, present invention process is down to 25% moisture percentage in sewage sludge from 80% and is had clear superiority in energy consumption, and 12-25% water content sludge is easy to conveying, there is wider array of outlet in subsequent treatment, and the mud of 60% is further continued to be carried out heat drying and reduces moisture content further and can be only achieved burning requirement。
" chemical conditioning+mechanism filter-pressing " is as follows with mummification dewatering process operating cost relative analysis of the present invention:
" chemical conditioning+mechanism filter-pressing " and mummification of the present invention are as follows to environmental effect contrast:
Claims (10)
1. printing and dyeing sludge deep dehydration-drying and other treatment equipment, it is characterized in that including printing and dyeing sludge storage tank, back-mixing machine, medium agitator, medium exsiccator, wherein mud is stored in storage tank, mud in mud storage tank is through Biological Pretreatment and enters medium agitator with water sucting medium after mixing, medium agitator carries out water sucting medium and mud to shake and sieve separation, water sucting medium after separation enters medium exsiccator, medium exsiccator evaporates the moisture in water sucting medium, again water sucting medium is heated simultaneously, water sucting medium after heating enters again medium agitator, medium agitator carries out water sucting medium and mud to shake and sieve separation again, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule outward transport packaging, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mix with the primary sludge of moisture content 80%～85%。
2. printing and dyeing sludge deep dehydration-drying and other treatment equipment according to claim 1, it is characterised in that above-mentioned mud storage tank includes storage tank and the mixing drum wind apparatus being installed in storage tank。
3. printing and dyeing sludge deep dehydration-drying and other treatment equipment according to claim 1, it is characterised in that above-mentioned back-mixing machine includes tank body and the stirring rod being installed in tank body and separating knife。
4. printing and dyeing sludge deep dehydration-drying and other treatment technique, it is characterised in that comprise the steps:
1) with microorganism fungus kind, the printing and dyeing sludge that moisture content is 80%～85% is carried out pretreatment；
2) carry out pretreated printing and dyeing sludge to mix in back-mixing device with water sucting medium；
3) mixed printing and dyeing sludge enters medium agitator with water sucting medium, sieve simultaneously, utilize density different, water sucting medium and mud are carried out shaking and sieve separation, the dewatered sludge granule moisture content separated is down to 25%, as finished product dewatered sludge granule, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mixes with the mud of moisture content 80%～85%；Water sucting medium after separation enters medium exsiccator, and moisture is evaporated, and again water sucting medium is heated simultaneously, and the water sucting medium after heating enters again medium agitator；
4) after the water sucting medium after heating enters medium agitator, separated mud mixes with water sucting medium again, mud is through physical reactions thorough breaking cellular wall further, in mud, moisture content automatically flows out and is absorbed by water sucting medium, sieve simultaneously, utilize density different, water sucting medium and mud are carried out shaking and sieve separation；Meanwhile, moisture content is enter medium exsiccator with the mud that moisture content is 80%～85% after the mud of 12-20% mixes in back-mixing machine；
5) step 3 is repeated) to step 4), so circulate。
5. printing and dyeing sludge deep dehydration-drying and other treatment technique according to claim 1, it is characterised in that above-mentioned steps 1) in microorganism fungus kind be the biological inoculum with flocculating function；Step 1) in sludge filter press, carry out pretreatment。
6. printing and dyeing sludge deep dehydration-drying and other treatment technique according to claim 1, it is characterised in that above-mentioned steps 2) in water sucting medium be with cross linked polyacrylate and silicate for intermingling material, there is certain hardness。
7. printing and dyeing sludge deep dehydration-drying and other treatment technique according to claim 1, it is characterised in that above-mentioned steps 2) in water sucting medium be prepare into the spherical of 4～7mm or oval porous polarity high-efficiency water-absorbing material。
8. printing and dyeing sludge deep dehydration-drying and other treatment technique according to claim 1, it is characterised in that above-mentioned steps 2) in, printing and dyeing sludge and 10% water sucting medium mix, water sucting medium quickly absorbs water, and moisture percentage in sewage sludge is reduced to 30%。
9. printing and dyeing sludge deep dehydration-drying and other treatment technique according to claim 1, it is characterised in that above-mentioned steps 3) in, water sucting medium is heated to 150-200 DEG C, and the water sucting medium after heating enters again medium agitator。
10. printing and dyeing sludge deep dehydration-drying and other treatment technique according to claim 1, it is characterized in that above-mentioned steps 4) in, in medium agitator, part moisture content is that the mud of 12-20% travels further into back-mixing machine, mixes with the mud of moisture content 80%～85%。
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| CN110183084A (en) * | 2019-06-24 | 2019-08-30 | 上海华畅环保设备发展有限公司 | Excess sludge desiccation decrement method and device |
| CN110272176A (en) * | 2019-07-09 | 2019-09-24 | 招远市汇潮新能源科技有限公司 | Sludge deep desiccation apparatus and method based on distributed superpower imbibition bead |
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| CN106865947A (en) * | 2017-03-17 | 2017-06-20 | 华南理工大学 | A kind of sludge drying processing method |
| CN106865947B (en) * | 2017-03-17 | 2020-09-22 | 华南理工大学 | Sludge drying treatment method |
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| AT525429A4 (en) * | 2022-04-14 | 2023-04-15 | Kahr Gottfried | Process for drying sewage sludge |
| AT525429B1 (en) * | 2022-04-14 | 2023-04-15 | Kahr Gottfried | Process for drying sewage sludge |
| WO2023197020A1 (en) | 2022-04-14 | 2023-10-19 | Kahr Gottfried | Method for drying sewage sludge |
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