CN110054380A - A kind of sludge continuous low-temperature thermokalite combined pretreatment device - Google Patents
A kind of sludge continuous low-temperature thermokalite combined pretreatment device Download PDFInfo
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- CN110054380A CN110054380A CN201910295971.6A CN201910295971A CN110054380A CN 110054380 A CN110054380 A CN 110054380A CN 201910295971 A CN201910295971 A CN 201910295971A CN 110054380 A CN110054380 A CN 110054380A
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- 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
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- 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
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- 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
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
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Abstract
The present invention relates to a kind of sludge continuous low-temperature thermokalite combined pretreatment devices, including the quenched pond of sludge, alkali formula pipe-line mixer, lye conditioning tank, heat exchanger I, Low Temperature Heat Treatment device, heat exchanger II, sludge conditioning pond, acid pipe-line mixer and acid solution preparation device, the quenched pond of sludge is successively connected with alkali formula pipe-line mixer, heat exchanger I, Low Temperature Heat Treatment device, heat exchanger II, sludge conditioning pond and acid pipe-line mixer by pipeline, and lye preparation pond is connected by alkali metering pump with alkali formula pipe-line mixer；The acid solution preparation device is connected with acid pipe-line mixer, and the heat exchanger I is connected with heat exchanger II；The quenched pond of sludge, alkali formula pipe-line mixer, heat exchanger, Low Temperature Heat Treatment device, sludge conditioning pond and acid pipe-line mixer are constituted a sludge by the present invention can be carried out continuously Low Temperature Thermal hydrolysis-alkali combined pretreatment device, reduce construction cost and occupied area.
Description
Technical field
The present invention relates to field of solid waste treatment, and in particular to a kind of sludge continuous low-temperature thermokalite combined pretreatment
Device.
Background technique
With the raising of Chinese Urbanization and living standards of the people, the amount of the sludge generated in municipal wastewater treatment process
Sustainable growth.China's sludge annual output expects to be up to 80,000,000 tons (in terms of moisture content 80%) in the year two thousand twenty.Meanwhile China is dirty
Mud harmless treatment rate is lower, has about 80% sludge not carry out any stabilisation or harmless treatment.And containing a large amount of in sludge
Organic matter, heavy metal and pathogen etc. will certainly bring serious secondary pollution to ask if it does not obtain appropriate processing disposition
Topic reduces environmental quality, while being also a kind of waste of resource.
The anaerobic digestion techniques of sludge can convert methane for the organic matter in sludge under anaerobic, recycle the energy
Substance kills pathogenic microorganism, reduction sludge volume, improves sludge dewatering ability, be a kind of common sludge stabilizing method.
Anaerobic digestion process is divided into four-stage: hydrolysis stage, produces acetic acid stage and methane phase stage at acidification stage.Due in sludge
Organic matter mostly by rise protection intracellular organic matter cell wall and cell membrane wrap up, hydrolysis stage is usually that sludge anaerobic disappears
The rate limiting step of change.This make traditional anaerobic digestion there are reaction rates low, the residence time is long, reactor volume is big,
The disadvantages of energy consumption is high, to limit its popularization and application.The pretreatment of sludge can promote the hydrolysis of sludge, so as to improve dirt
The anaerobic digestion ability of mud.Current preconditioning technique is mainly by soda acid processing, pyrohydrolysis, ultrasonication, microwave treatment, smelly
Oxygen processing and high-level oxidation technology etc..But these preconditioning techniques are low in the prevalence for the treatment of effeciency, equipment requirement is high, energy consumption is high
Or the problem that pharmaceutical use is big, so that energy or economic well-being of workers and staff are difficult to realize, to limit the extensive use of these technologies.
Summary of the invention
For cost in existing method for sludge treatment and energy consumption is higher, resources utilization degree is low disadvantage, mesh of the invention
Be the provision of a kind of sludge continuous low-temperature thermokalite combined pretreatment device, further increase anaerobic sludge digestion processing pair
Efficiency of sludge treatment reduces energy consumption, reduces Treatment of Sludge cost, promotes waste resource recovery utilization rate.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of sludge continuous low-temperature thermokalite combined pretreatment device, including the quenched pond of sludge, alkali formula pipe-line mixer, lye are pre-
Standby pond, heat exchanger I, Low Temperature Heat Treatment device, heat exchanger II, sludge conditioning pond, acid pipe-line mixer and acid solution are pre-
Standby device, the quenched pond of sludge by pipeline successively with alkali formula pipe-line mixer, heat exchanger I, Low Temperature Heat Treatment device, heat
Exchanger II, sludge conditioning pond and acid pipe-line mixer are connected, and lye preparation pond passes through alkali metering pump and alkali formula pipe
Road mixer is connected；The acid solution preparation device is connected with acid pipe-line mixer, the heat exchanger I and II phase of heat exchanger
Even.
Further, between the quenched pond of the sludge and alkali formula pipe-line mixer be equipped with screw metering pump I, check-valves and
Electromagnetic flowmeter I；It is described that screw metering pump II is equipped between alkali formula pipe-line mixer and heat exchanger I；The sludge conditioning
Screw metering pump III, electromagnetic flowmeter II are equipped between pond and acid pipe-line mixer.
Further, the sludge conditioning pond include sludge conditioning pond ontology, dewatered sludge import, thickened sludge import,
Water inlet, sludge outlet and blender I；The sludge conditioning pond ontology upper end is equipped with dewatered sludge import；The sludge conditioning
Thickened sludge import and water inlet are respectively equipped on the left of the ontology of pond；Sludge outlet is equipped on the right side of the sludge conditioning pond；It is described
Blender I is equipped in the ontology of sludge conditioning pond；The quenched pond of sludge is equipped with scale, is equipped with floating ball in the quenched pond of sludge
Liquidometer.
Further, the blender I includes motor I, agitating shaft and paddle, and motor I is connected with agitating shaft, described to stir
It mixes axis and is equipped with paddle, be fixedly connected with cutter on stirring blade；The quantity of the cutter is at least two, the paddle
For single-layer or multi-layer blade.
Further, the Low Temperature Heat Treatment device includes bringing-up section and heat treatment section, and the heat treatment section setting exists
The top of bringing-up section is equipped with the cavity being connected between bringing-up section and heat treatment section, lower end is equipped with dirt on the left of the bringing-up section
Mud import, heat treatment section left side upper end are equipped with sludge outlet；Blender II is equipped in the Low Temperature Heat Treatment device, it is described
Blender II is set in cavity；Blender II is equipped with multiple layers of vanes.Blender is equipped in Low Temperature Heat Treatment device of the invention
II, it avoids inside Low Temperature Heat Treatment device and dead mud and stirring dead angle occurs；
Further, the bringing-up section and heat treatment section inner sidewall are equipped with thermometer, and the quantity of the thermometer is at least 2
It is a.
Further, the Low Temperature Heat Treatment device lateral wall is equipped with heating device.
Further, the heating device includes insulating layer and heat exchanger, and the insulating layer is arranged on the outside of heat exchanger；
The insulating layer with a thickness of 5-10cm.The heat preservation layer material is black heat-insulating cotton.The heat exchanger passes through hot medium pipeline
It is connected with boilers heated electrically.
Further, the acid pipe-line mixer is equipped with pH meter.
Further, the acid solution preparation device includes acid solution preparation pond and sour metering pump；Acid solution preparation pond is logical
Peracid metering pump is connected with acid pipe-line mixer.
Further, the acid solution preparation device includes screw metering pump IV and crushing mixer, the broken stirring
Machine is connected by screw metering pump IV with acid pipe-line mixer.
Due to using the above technology, the present invention compared with the prior art, is had the advantage that as follows:
(1) present invention by the quenched pond of sludge, heat exchanger, alkali formula pipe-line mixer, Low Temperature Heat Treatment device, sludge conditioning pond and
Acid pipe-line mixer, which constitutes a sludge, can be carried out continuously Low Temperature Thermal hydrolysis-alkali combined pretreatment device, to reduce
Reactor volume reduces construction cost and occupied area；
(2) heat exchanger I is connected with heat exchanger II in the present invention, can effectively recycle thermal energy recycling, be conducive to save
Energy consumption；Heat exchange medium in the heat exchanger I and heat exchanger II is flowed by pipeline, and thermal medium is cooling in heat exchanger I, cold
But medium is delivered to heat exchanger II and cools down to sludge, recycles thermal energy, and energy saving reduces the technical effect of cost, can be continuous
Stable operation；
(3) present invention is equipped with the quenched pond of sludge, can mix according to a certain percentage thickened sludge, dewatered sludge and tap water, can
The stability for guaranteeing moisture percentage in sewage sludge, to guarantee the stability of subsequent anaerobic digestion.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of sludge continuous low-temperature thermokalite combined pretreatment device；
Fig. 2 is the structural schematic diagram of Low Temperature Heat Treatment device；
Fig. 3 is the structural schematic diagram of embodiment 7；
Fig. 4 is the structural schematic diagram of embodiment 8；
In figure: the quenched pond of 1-sludge, 101-dewatered sludge imports, 102-thickened sludge imports, 103-water inlets, 104-
Sludge outlet, 105-blenders I, 1001-bringing-up sections, 1002-heat treatment sections, 1003-blenders II, 1004-sludge into
Mouthful, 1005-sludge outlets, 1006-heat exchangers, 1007-insulating layers, 1008-thermometers, 1501-pH meters, 2-screw rod meters
Amount pump I, 3-check-valves, 4-electromagnetic flowmeters I, 5-alkali formula pipe-line mixers, 6-lye preparation ponds, 7-alkali metering pumps,
8-screw metering pumps II, 9-heat exchangers I, 10-Low Temperature Heat Treatment devices, 11-heat exchangers II, 12-sludge conditionings
Pond, 13-screw metering pumps III, 14-electromagnetic flowmeters II, 15-acid pipe-line mixers, 16-sour metering pumps, 17-acid solutions
Preparation pond, 18-screw metering pumps IV, 19-crushing mixers.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated.
Embodiment 1:
In conjunction with attached drawing as it can be seen that a kind of sludge continuous low-temperature thermokalite combined pretreatment device, including the quenched pond 1 of sludge, alkali formula pipe
Road mixer 5, lye preparation pond 6, heat exchanger I 9, Low Temperature Heat Treatment device 10, heat exchanger II 11, sludge conditioning pond 12,
Acid pipe-line mixer 15 and acid solution preparation device, the quenched pond 1 of sludge by pipeline successively with alkali formula pipe-line mixer
5, heat exchanger I 9, Low Temperature Heat Treatment device 10,15 phase of heat exchanger II 11, sludge conditioning pond 12 and acid pipe-line mixer
Even, lye preparation pond 6 is connected by alkali metering pump 7 with alkali formula pipe-line mixer 5；The acid solution preparation device and acid pipe
Road mixer 15 is connected, and the heat exchanger I 9 is connected with heat exchanger II 11.
Heat exchange medium in the heat exchanger I 9 and heat exchanger II 11 is flowed by pipeline, and thermal medium is in heat exchanger I 9
Cooling, cooling medium is delivered to heat exchanger II 11 and cools down to sludge, recycles thermal energy.
Embodiment 2:
As an improvement of the present invention, screw metering pump I is equipped between the quenched pond 1 of the sludge and alkali formula pipe-line mixer 5
2, check-valves 3 and electromagnetic flowmeter I 4；It is described that screw metering pump is equipped between alkali formula pipe-line mixer 5 and heat exchanger I 9
Ⅱ8；Screw metering pump III 13, electromagnetic flowmeter II 14 are equipped between the sludge conditioning pond 12 and acid pipe-line mixer 15.
Remaining design feature and advantage are identical with embodiment 1.
Embodiment 3:
As an improvement of the present invention, the sludge conditioning pond 1 include sludge conditioning pond ontology, it is dewatered sludge import 101, dense
Contracting sludge import 102, water inlet 103, sludge outlet 104 and blender I 105；The sludge conditioning pond ontology upper end is equipped with de-
Sewage sludge import 101；Thickened sludge import 102 and water inlet 103 are respectively equipped on the left of the ontology of the sludge conditioning pond；It is described
Sludge outlet 104 is equipped on the right side of sludge conditioning pond；Blender I 105 is equipped in the ontology of the sludge conditioning pond.
The quenched pond 1 of sludge is equipped with scale, is equipped with floating ball lever meter in the quenched pond 1 of sludge.
The blender I 105 includes motor I, agitating shaft and paddle, and motor I is connected with agitating shaft, on the agitating shaft
Equipped with paddle, cutter is fixedly connected on stirring blade；The quantity of the cutter is at least two, and the paddle is single layer
Or multiple layers of vanes.
Dewatered sludge enters the quenched pond 1 of sludge by dewatered sludge import 101.Thickened sludge import 102 connects sludge condensation
Sludge pump can be used to be pumped into the quenched pond 1 of sludge from the concentrated sludge import 102 of sludge concentration tank for pond, thickened sludge.Water inlet 103
It is connected to tap water pipe network, tap water can be added into the quenched pond 1 of sludge by water inlet 103.Dewatered sludge, thickened sludge and
Tap water is mixed in a certain proportion to reach the requirement of sludge anaerobic moisture content.The quenched pond 1 of sludge is additionally provided with blender I 105.It stirs
It mixes the band movable vane piece of device I 105 to rotate, and paddle drives cutter to rotate in the course of rotation, so as to will be in reaction zone
The chopping of bulk sludge, promotes the uniform mixing of dewatered sludge, thickened sludge and tap water.
The present invention is equipped with the quenched pond of sludge, can mix according to a certain percentage thickened sludge, dewatered sludge and tap water, can
The stability for guaranteeing moisture percentage in sewage sludge, to guarantee the stability of subsequent anaerobic digestion.
Remaining structure is identical with embodiment 1 with advantage.
Embodiment 4:
As an improvement of the present invention, the Low Temperature Heat Treatment device 10 includes bringing-up section 1001 and heat treatment section 1002,
The top of bringing-up section 1001 is arranged in the heat treatment section 1002, is equipped with and is connected between bringing-up section 1001 and heat treatment section 1002
Logical cavity, the 1001 left side lower end of bringing-up section are equipped with sludge import 1004, and the 1002 left side upper end of heat treatment section is equipped with
Sludge outlet 1005；It is equipped with blender II 1003 in the Low Temperature Heat Treatment device 10, the blender II 1003 is set to chamber
In vivo.Blender II 1003 is equipped with multiple layers of vanes, and blender II 1003 can be such that the sludge in Low Temperature Heat Treatment device is sufficiently mixed,
Avoid inside Low Temperature Heat Treatment device and dead mud and stirring dead angle occur, during actual use, the blade number of plies can be according to heat at
The length of reason section 1002 is selected.
The bringing-up section 1001 and heat treatment 1002 inner sidewall of section are equipped with thermometer 1008, the thermometer 1008
Quantity is at least two.
Remaining structure is identical with embodiment 1 with advantage.
Embodiment 5:
As an improvement of the present invention, 10 lateral wall of Low Temperature Heat Treatment device is equipped with heating device；The heating dress
It sets including insulating layer 1007 and heat exchanger 1006, the setting of insulating layer 1007 is in 1006 outside of heat exchanger；Heat exchanger 1006
It is connected by hot medium pipeline with boilers heated electrically；The insulating layer 1007 with a thickness of 5-10cm, keeping the temperature layer material is that black is protected
Wen Mian.
Remaining structure is identical with embodiment 4 with advantage.
Embodiment 6:
As an improvement of the present invention, the acid pipe-line mixer 15 is equipped with pH meter 1501.
Remaining structure is identical with embodiment 1 with advantage.
Embodiment 7:
As an improvement of the present invention, the acid solution preparation device includes acid solution preparation pond 17 and sour metering pump 16；It is described
Acid solution preparation pond 17 passes through sour metering pump 16 and is connected with acid pipe-line mixer 15.Remaining structure and advantage and embodiment 1 are complete
It is identical.
The sludge being uniformly mixed in the quenched pond of sludge passes through screw metering pump I 2, check-valves 3 and electricity by sludge outlet 104
Magnetic flowmeter I 4 enters alkali formula pipe-line mixer 5.Alkaline agent is pumped into the mixing of alkali formula pipeline from lye preparation pond 6 by alkali metering pump 7
Device 5.The mixed proportion of sludge and alkaline agent is controlled by electromagnetic flowmeter I 4 and alkali metering pump 7, and mixed proportion is joined by technique
Number determines.Sludge is completed to mix with alkaline agent in alkali formula pipe-line mixer 5.Preheat dirt of the sludge finished after alkali process
Mud is pumped into sludge heat exchanger I 9 by screw metering pump II 8.I 9 pairs of sludge of sludge heat exchanger preheat.Sludge pre-add
Low Temperature Heat Treatment device 10 is entered by sludge import 1004 after heat.Into overflow under the use of Low Temperature Heat Treatment device 10
Mode passes in and out sludge.Sludge is warming up to preset temperature in the bringing-up section 1001 of Low Temperature Heat Treatment device 10 after pretreatment, in Re Chu
It manages and carries out pyrohydrolysis-alkali combined pretreatment in section 1002.Pyrohydrolysis-alkali combined pretreatment time is sludge in heat treatment section 1002
Interior hydraulic detention time.Water of the horizontal position of heat exchanger II 11 lower than the sludge outlet 1005 of Low Temperature Heat Treatment device 10
Prosposition is set, and the horizontal position of the feed inlet of conditioning tank 12 is lower than the horizontal position of the heat exchanger II 11.Sludge passes through overflow
The sludge outlet for flowing out Low Temperature Heat Treatment device 10, enters heat exchanger II 11 by gravity.Sludge is in heat exchanger II
In 11 after cooling, passes through and flow into sludge conditioning pond 12 under gravity.Sludge passes through screw metering pump III 13 and electromagnetic flowmeter
II 14 enter acid pipe-line mixer 15.Sour agent is pumped into acid pipe-line mixer from acid solution preparation pond 17 through peracid metering pump 16
15.Sludge and the mixed proportion of sour agent are controlled by electromagnetic flowmeter II 14 and sour metering pump 16.Sludge and sour agent are in acid
Mixing is completed in formula pipe-line mixer 15, and sludge is adjusted to neutrality.Acid pipe-line mixer 15 is equipped with pH meter 1501, for dirt
Mud pH is measured.
Heat exchange medium in heat exchanger I 9 and heat exchanger II 11 is flowed by pipeline, and thermal medium is in the heat exchanger I 9
Cooling, cooling medium is delivered to heat exchanger II 11 and cools down to sludge, recycles thermal energy.
It is briefly introduced the step of using the device to carry out sludge at low temperature pyrohydrolysis-alkali combined pretreatment below, it is main
Want the following steps are included:
Step 1, the dewatered sludge of sewage treatment plant, thickened sludge and tap water are introduced into the quenched pond 1 of sludge according to a certain percentage,
Moisture percentage in sewage sludge is adjusted to 92-98%, in order to guarantee the stability of later period anaerobic digestion reaction, guarantees the moisture content of thickened sludge
It is a steady state value.By the stirring of blender I 105, the sludge in quenched pond is uniformly mixed.
Step 2, sludge is mixed with alkaline agent by alkali formula pipe-line mixer 5 and carries out alkali process, and NaOH, KOH can be selected in alkaline agent
With Ca (OH)2One or more mixtures, concentration 1-10mol/L, alkali process pH are 8-12, alkali process pH by sludge and
The mixed proportion of alkaline agent controls, and mixed proportion can pass through alkali metering pump 7 and electromagnetic flowmeter I 4 controls.
Step 3, sludge is preheated by heat exchanger I 9, and sludge temperature is made to rise to 30-50 DEG C.
Step 4, sludge carries out Low Temperature Thermal hydrolysis-alkali combined pretreatment, pretreatment temperature by Low Temperature Heat Treatment device 10
It is 60-90 DEG C, pretreatment time 30min-2d, pretreatment time is that waterpower of the sludge in Low Temperature Heat Treatment device 10 is stopped
The time is stayed, hydraulic detention time is controlled by mud discharge, the caliber of Low Temperature Heat Treatment device 10 and heat treatment segment length.
Step 5, sludge is cooled down by heat exchanger II 11, and sludge temperature is made to be down to 35 DEG C or 55 DEG C or so.
Step 6, sludge is mixed by acid pipe-line mixer 15 with sour agent, and HCl, HNO can be selected in sour agent3And H2SO4In
One or more, concentration 1-10mol/L, sour agent and sludge are mixed by certain proportion, so that sludge pH be made to pull back to neutrality；
The present invention is based on Low Temperature Thermal hydrolysis and alkali combined pretreatment, use pyrohydrolysis temperature for 60-90 DEG C, warm compared to height
Technology for hydrolyzing (> 100 DEG C), the present invention do not need high temperature and high pressure treatment conditions, and Energy input is few, construction cost is low and safety
It is high.
It is adjusted lower than the horizontal position of the sludge outlet 1005 of Low Temperature Heat Treatment device 10 horizontal position of heat exchanger II 11
The horizontal position for saving the feed inlet in pond 12 is lower than the horizontal position of the heat exchanger II 11, and stage sludge flowing does not need to move
Power equipment does not need measuring equipment yet, reduces equipment investment.
Embodiment 8:
As an improvement of the present invention, the acid solution preparation device includes screw metering pump IV 18 and crushing mixer 19,
The crushing mixer 19 is connected by screw metering pump IV 18 with acid pipe-line mixer 15.Kitchen garbage is measured by screw rod
It pumps IV 18 and is pumped into acid pipe-line mixer 15 from crushing mixer 19.The mixed proportion of sludge and kitchen garbage passes through Electromagnetic Flow
Count II 14 and screw metering pump IV 18 controlled.Sludge and kitchen garbage complete mixing in acid pipe-line mixer 15, will
Sludge and kitchen garbage are adjusted to neutrality.Acid pipe-line mixer 15 is equipped with pH meter 1501, measures for the pH to mixture.
Remaining structure is identical with embodiment 1 with advantage.
Kitchen garbage can be used to substitute sour agent for the present invention, and kitchen garbage passes through mixed with the sludge after low temperature thermokalite Combined Treatment
It closes to adjust back pH, to save the use of chemicals.
Sludge continuous low-temperature thermokalite combined pretreatment method of the invention, the specific steps are as follows:
1) dewatered sludge of sewage treatment plant, thickened sludge and tap water are introduced into the quenched pond 1 of sludge according to a certain percentage, dirt
Mud moisture content is adjusted to 92-98%；
2) sludge is mixed with alkaline agent by alkali formula pipe-line mixer 5 and carries out alkali process, and NaOH, KOH and Ca (OH) 2 can be selected in alkaline agent
One or more mixtures, concentration 1-10mol/L, alkali process pH are 8-12, and alkali process pH is by the mixed of sludge and alkaline agent
Composition and division in a proportion example controls, and mixed proportion can pass through alkali metering pump 7 and electromagnetic flowmeter I 4 controls；
3) sludge is preheated by heat exchanger I 9；
4) sludge carries out Low Temperature Thermal hydrolysis-alkali combined pretreatment, pretreatment temperature 60-90 by Low Temperature Heat Treatment device 10
DEG C, pretreatment time 30min-2d, pretreatment time is hydraulic detention time of the sludge in Low Temperature Heat Treatment device 10,
Hydraulic detention time is controlled by mud discharge, the caliber of Low Temperature Heat Treatment device 10 and heat treatment segment length；
5) sludge is cooled down by heat exchanger II 11, and sludge temperature is made to be down to 35 DEG C or 55 DEG C or so；
6) kitchen garbage is pumped into acid pipe-line mixer 15 from crushing mixer 19 by screw metering pump IV 18.Sludge and kitchen
The mixed proportion of rubbish is controlled by electromagnetic flowmeter II 14 and screw metering pump IV 18, and kitchen garbage and sludge are passed through
Certain proportion mixing, so that the pH of sludge and kitchen garbage be made to pull back to neutrality.
Alkali formula pipe-line mixer 5, lye preparation pond 6, alkali metering pump 7, screw metering pump II 8, heat exchanger I in the present invention
9, Low Temperature Heat Treatment device 10, heat exchanger II 11, sludge conditioning pond 12, screw metering pump III 13, electromagnetic flowmeter II 14, stir
The material for mixing connecting line between device II 1003 and each component is alkali proof steel.Acid pipe-line mixer 15, sour metering pump 16, acid
The material of liquid preparation pond 17 and connecting line is glassed steel.
Obviously, those skilled in the art can carry out various changes and deformation without departing from essence of the invention to the present invention
Mind and range；In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technology
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of sludge continuous low-temperature thermokalite combined pretreatment device, it is characterised in that: including the quenched pond of sludge (1), alkali formula
Pipe-line mixer (5), lye conditioning tank (6), heat exchanger I (9), Low Temperature Heat Treatment device (10), heat exchanger II (11), dirt
Mud conditioning tank (12), acid pipe-line mixer (15) and acid solution preparation device, the quenched pond of sludge (1) pass through pipeline successively
With alkali formula pipe-line mixer (5), heat exchanger I (9), Low Temperature Heat Treatment device (10), heat exchanger II (11), sludge conditioning pond
(12) and acid pipe-line mixer (15) is connected, and lye preparation pond (6) is mixed by alkali metering pump (7) with alkali formula pipeline
Device (5) is connected；The acid solution preparation device is connected with acid pipe-line mixer (15), the heat exchanger I (9) and heat exchanger
II (11) are connected.
2. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 1, it is characterised in that: described
Screw metering pump I (2), check-valves (3) and Electromagnetic Flow are equipped between the quenched pond of sludge (1) and alkali formula pipe-line mixer (5)
Count I (4)；It is described that screw metering pump II (8) is equipped between alkali formula pipe-line mixer (5) and heat exchanger I (9)；The sludge
Screw metering pump III (13), electromagnetic flowmeter II (14) are equipped between conditioning tank (12) and acid pipe-line mixer (15).
3. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 1, it is characterised in that: described
Sludge conditioning pond (1) includes sludge conditioning pond ontology, dewatered sludge import (101), thickened sludge import (102), water inlet
(103), sludge outlet (104) and blender I (105)；The sludge conditioning pond ontology upper end is equipped with dewatered sludge import
(101)；Thickened sludge import (102) and water inlet (103) are respectively equipped on the left of the ontology of the sludge conditioning pond；The sludge
Sludge outlet (104) are equipped on the right side of conditioning tank；Blender I (105) is equipped in the ontology of the sludge conditioning pond；The sludge is quenched
Pond (1) is equipped with scale, is equipped with floating ball lever meter in the quenched pond of sludge (1).
4. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 3, it is characterised in that: described
Blender I (105) includes motor I, agitating shaft and paddle, and motor I is connected with agitating shaft, and the agitating shaft is equipped with stirring
Leaf, the paddle are single-layer or multi-layer blade.
5. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 1, it is characterised in that: described
Low Temperature Heat Treatment device (10) includes bringing-up section (1001) and heat treatment section (1002), and heat treatment section (1002) setting exists
The top of bringing-up section (1001) is equipped with the cavity being connected between bringing-up section (1001) and heat treatment section (1002), described to add
Lower end is equipped with sludge import (1004) on the left of hot arc (1001), and upper end is equipped with sludge outlet on the left of the heat treatment section (1002)
(1005)；Blender II (1003) is equipped in the Low Temperature Heat Treatment device (10), the blender II (1003) is set to chamber
In vivo.
6. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 5, it is characterised in that: described
Bringing-up section (1001) and heat treatment section (1002) inner sidewall are equipped with thermometer (1008), the quantity of the thermometer (1008)
For at least two.
7. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 5, it is characterised in that: described
Low Temperature Heat Treatment device (10) lateral wall is equipped with heating device；The heating device includes insulating layer (1007) and heat exchanger
(1006), insulating layer (1007) setting is on the outside of heat exchanger (1006)；The insulating layer (1007) with a thickness of 1-50cm.
8. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 1, it is characterised in that: described
PH meter (1501) are equipped in acid pipe-line mixer (15).
9. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 1, it is characterised in that: described
Acid solution preparation device includes acid solution preparation pond (17) and sour metering pump (16)；Acid solution preparation pond (17) passes through sour metering pump
(16) it is connected with acid pipe-line mixer (15).
10. a kind of sludge continuous low-temperature thermokalite combined pretreatment device according to claim 1, it is characterised in that: institute
Stating acid solution preparation device includes screw metering pump IV (18) and crushing mixer (19), and the crushing mixer (19) passes through spiral shell
Bar metering pump IV (18) is connected with acid pipe-line mixer (15).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910295971.6A CN110054380A (en) | 2019-04-12 | 2019-04-12 | A kind of sludge continuous low-temperature thermokalite combined pretreatment device |
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|---|---|---|---|
| CN201910295971.6A CN110054380A (en) | 2019-04-12 | 2019-04-12 | A kind of sludge continuous low-temperature thermokalite combined pretreatment device |
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| CN110054380A true CN110054380A (en) | 2019-07-26 |
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| CN113501640A (en) * | 2021-08-18 | 2021-10-15 | 中冶生态环保集团有限公司 | Alkali and ultrasonic combined sludge pretreatment device and treatment method |
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