Sludge solidification system
Technical field
The utility model relates to municipal field of environment engineering technology, in particular to a kind of sludge solidification system.
Background technique
In recent years, river, port engineering are fast-developing, generate a large amount of mud, currently, general store mud field by setting land
Or directly throwing is handled in the method for low laying areas, due to when mud moisture content is high, intensity is low, deformation is big and consolidates
Between the reasons such as long be difficult directly to utilize in engineering.In many areas, a large amount of arable lands of long-term occupancy and fish pond, waste land resource,
Keep arable land more nervous.
Dredging silt itself will extend at any time as a kind of solid waste adversely affects environment, usually
Containing polluters such as a large amount of heavy metal ion, organic matter and pathogen in mud, these harmful substances can be idle in mud
When be precipitated with sewage, and then serious contaminated soil and underground water destroy ecological environment and threaten human security.
It has begun and is mixed contaminated mud with curing agent at present using chemosetting technology, i.e., be added into mud
Curing materials reach solidification.Its mechanism of action is to make the free water being saturated in mud become to crystallize by adding curing materials
Water or the water ion in conjunction with soil particle reduce the Free water in mud, and/or the intensity of increase mud facilitates the later period to fill out
It buries, while forming hard crystal structure after aquation, all heavy metals are nearly all fixed, and form insoluble hydroxide
Object or carbonate form, at the same by be optionally added into chemical agent make poisonous and harmful substance reduce dissolubility, migration and
Toxicity.
When mud is mixed with curing agent, curing agent is all individually ready to go to be mixed again with mud, curing agent
It also is typically all prepared in advance, or directly buy, when the curing agent of such mixed system may have existed very long
Between, solidification effect be not so good as with with match or matching while using it is good, there is presently no a kind of system can reach need it is solid
The preparation and use of curing agent are carried out when change together, and generally mud is not also handled, is often reduced so solid
Change effect.
In view of this, special propose the utility model.
Utility model content
The purpose of this utility model is to provide a kind of sludge solidification system, which can be realized the current existing of curing agent
First mud is ground before sludge solidification with existing use process, while by mud grinding device, ground processing
The solidification effect of mud is more preferable after mud afterwards is mixed with curing agent again.
In order to realize the above-mentioned purpose of the utility model, the following technical scheme is adopted:
A kind of sludge solidification system, the sludge solidification system include curing agent processing system and sludge treatment system;
The curing agent processing system includes hopper, curing agent grinding device and conveying device, and the hopper top is object
Expect import, the hopper lower part is material outlet, and the material that the material outlet is fallen is able to enter the curing agent grinding
In device, the outlet of the curing agent grinding device is connected with the conveying device;
The sludge treatment system includes bucket, mud grinding device and solidification mixing chamber, and the bucket top is mud
Import, the bucket lower part are sludge outlet;
The mud grinding device includes support frame, bottom plate and mill;The bottom plate is located on support frame as described above, the bottom
Plate is equipped with mud outflux, and the height of the mud outflux is lower than on the bottom plate and the mud outflux on the bottom plate
The height of relative position;A shaft is equipped in the middle part of the bottom plate, the bottom plate top is connected with the mill by shaft, described
Mill can be rotated by shaft above the bottom plate, and the mill is equipped with mud through-hole, and mud can pass through the silt
Mud through-hole is flow on the bottom plate;
The mud of the sludge outlet outflow is able to enter in the mud through-hole, the silt of mud flow outlet outflow
Mud is able to enter in the solidification mixing chamber, and the material that the conveying device transfers out is able to enter the solidification mixing chamber
In.
Preferably, on the basis of technical solutions of the utility model, position and the mill at the shaft of the bottom plate middle part
The vertical range of position is 1-5cm at shaft.
Preferably, on the basis of technical solutions of the utility model, the mud grinding device further includes motor and belt;
Described belt one end was sheathed on the disk week of the mill, and the belt other end is sheathed on the axis of the motor
On;The motor drives the belt rotation to drive the mill to rotate.
Preferably, on the basis of technical solutions of the utility model, the conveying device is screw conveyor and/or conveying
Band.
Preferably, on the basis of technical solutions of the utility model, the curing agent grinding device is ball mill.
Preferably, on the basis of technical solutions of the utility model, agitating device is equipped in the solidification mixing chamber, it is described
Agitating device includes agitating shaft, and the agitating shaft is equipped with agitating paddle, and the agitating shaft is realized by the drive of stirring motor to be turned
It is dynamic.
Preferably, on the basis of technical solutions of the utility model, the import of the grinding device is located at the material and goes out
Immediately below mouthful, the material that the material outlet is fallen is able to enter in the grinding device.
Preferably, on the basis of technical solutions of the utility model, under the mud through-hole is located at the sludge outlet just
The mud of side, the sludge outlet outflow is able to enter in the mud through-hole;
The mud of the underface for solidifying mixing chamber and being located at the mud outflux, mud flow outlet outflow can
It enters in solidification mixing chamber.
Preferably, on the basis of technical solutions of the utility model, at the material outlet of the hopper lower part and/or the mud
Bottom cover is equipped at bucket lower part sludge outlet;
Rotation connection and/or the bottom cover and the bucket lower part at the bottom cover and hopper lower part material outlet
It is rotatablely connected at sludge outlet;
The bottom cover can be opened and be closed by shaft.
Preferably, bottom cover on the basis of technical solutions of the utility model, at the material outlet of the hopper lower part
The bottom cover at upper and/or bucket lower part sludge outlet is equipped with gravity display, gravity sensor and controller, institute
Gravity display and the gravity sensor is stated independently to be connected with the controller;
The gravity sensor will test result and be transmitted to for detecting material and/or mud weight on the bottom cover
The controller, the controller is for will test as the result is shown in gravity display.
Preferably, on the basis of technical solutions of the utility model, the sludge solidification system further includes spherical molding machine;
The spherical shape molding machine is connect with the solidification mixing chamber, it is described solidify mixed material that mixing chamber exports can be into
Enter into the spherical molding machine.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the sludge solidification system of the utility model includes curing agent processing system and sludge treatment system two parts, Gu
Agent processing system, which is realized, handles the ground and mixed of curing agent, and such curing agent partial size is smaller, and the later period with mud when mixing
The effect of curing agent can be preferably played, solidification effect is promoted, meanwhile, sludge treatment system is before mud is mixed with curing agent
Mud is also ground, the higher mud of moisture content can be ground well by using mud grinding device
It grinds, bulk particulate material is not contained in the mud after milled processed, mud more disperses, and surface area is bigger, can be preferably
It is acted on curing agent, is also able to ascend solidification effect.
(2) the sludge solidification system of the utility model can carry out curing agent processing and sludge treatment respectively, finally again into
Row mixing, the system structure is uncomplicated and easy to operate, carries out convenient for industrialization, can be realized the current existing of curing agent and mud
With existing use process.By the milled processed to curing agent and mud, the two is enabled to be obviously improved silt in later period mixing
Mud solidification effect, good solidification and stabilization effect can be obtained by carrying out sludge solidification using the utility model curing system, be obtained
The mud intensity arrived is high, moisture content is low, and unconfined compressive strength is lower than 55% up to 180KPa or more, moisture content.
Detailed description of the invention
Fig. 1 is a kind of flowage structure figure of the sludge solidification system of embodiment of the utility model;
Fig. 2 is a kind of structural schematic diagram of the mud grinding device of embodiment of the utility model;
Fig. 3 is a kind of hopper construction schematic diagram with bottom cover of embodiment of the utility model;
Fig. 4 is a kind of hopper Weighing control schematic diagram with bottom cover of embodiment of the utility model.
Icon: 100- curing agent processing system;110- hopper;111- material inlet;112- material outlet;120- curing agent
Grinding device;130- conveying device;200- sludge treatment system;210- bucket;211- mud import;212- sludge outlet;
220- mud grinding device;221- support frame;222- bottom plate;223- mill;224- mud outflux;225- shaft;226- becomes silted up
Mud through-hole;227- motor;228- belt;230- solidifies mixing chamber;301- bottom cover.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
The utility model provides a kind of sludge solidification system, and Fig. 1 is solid for a kind of mud of embodiment of the utility model
The flowage structure figure of change system;Fig. 2 is a kind of structural schematic diagram of the mud grinding device of embodiment of the utility model.
As depicted in figs. 1 and 2, sludge solidification system includes curing agent processing system 100 and sludge treatment system 200;Gu
Agent processing system 100 include hopper 110, curing agent grinding device 120 and conveying device 130,110 top of hopper be material into
Mouth 111,110 lower part of hopper are material outlet 112, and the material that material outlet 112 is fallen is able to enter curing agent grinding device
In 120, the outlet of curing agent grinding device 120 is connected with conveying device 130;Sludge treatment system 200 includes bucket 210, becomes silted up
Mud grinding device 220 and solidification mixing chamber 230,210 top of bucket are mud import 211, and 210 lower part of bucket is sludge outlet
212;Mud grinding device 220 includes support frame 221, bottom plate 222 and mill 223;Bottom plate 222 is located on support frame 221, bottom plate
222 are equipped with mud outflux 224, and the height of mud outflux 224 is lower than on bottom plate 222 and mud outflux 224 on bottom plate 222
The height of relative position;It is equipped with a shaft 225 in the middle part of bottom plate 222, passes through shaft 225 above bottom plate 222 and is connected with mill 223,
Mill 223 can be rotated by shaft 225 above bottom plate 222, and mill 223 is equipped with mud through-hole 226, and mud can pass through
Mud through-hole 226 is flow on bottom plate 222;The mud that sludge outlet 212 flows out is able to enter in mud through-hole 226, mud flow
The mud of 224 outflow of outlet is able to enter in solidification mixing chamber 230, and the material that conveying device 130 transfers out is able to enter
Solidify in mixing chamber 230.
Here mud refers to the mud in the water bodys such as rivers, lake, reservoir and bay.Mud moisture content is higher, generally
In 70-80%.
It is entered in curing agent grinding device 120 in use, the curing agent each component weighed up is passed sequentially through hopper 110,
Or enter the curing agent for mixing each component in curing agent grinding device 120 by hopper 110, it grinds and fills in curing agent
It sets in 120 and curing agent is ground, the curing agent after milled processed is delivered to solidification mixing chamber by conveying device 130
In 230.Progress can be synchronized, the mud weighed up is entered to the mill 223 of mud grinding device 220 by bucket 210
On mud through-hole 226 in, mud is flow on bottom plate 222 by through-hole, and the grinding to mud is realized by the rotation of mill 223
It handles, the mud after milled processed enters in solidification mixing chamber 230, with the curing agent after milled processed in solidification mixing chamber
It carries out being sufficiently mixed solidification in 230.Mud is further processed again after solidification.
The sludge solidification system of the utility model includes curing agent processing system and sludge treatment system two parts, curing agent
Processing system, which is realized, handles the ground and mixed of curing agent, and such curing agent partial size is smaller, and the later period can when mixing with mud
The effect for preferably playing curing agent promotes solidification effect, meanwhile, sludge treatment system is before mud is mixed with curing agent to silt
Mud is also ground, and can be ground, be ground to the higher mud of moisture content well by using mud grinding device
Do not contain bulk particulate material in mill treated mud, mud more disperses, and surface area is bigger, can preferably with solidification
Agent is acted on, and solidification effect is also able to ascend.
Sludge solidification system can carry out curing agent processing and sludge treatment respectively, finally be mixed again, system behaviour
Facilitate, carried out convenient for industrialization, the matching while using that can be realized curing agent and mud shows use process.By to curing agent and
The milled processed of mud enables the two to be obviously improved sludge solidification effect in later period mixing, solid using the utility model
Change system, which carries out sludge solidification, can obtain good solidification and stabilization effect, and obtained mud intensity is high, moisture content is low, no side
Compression strength is limited up to 180KPa or more, moisture content is lower than 55%.
Preferably, curing agent includes following component by mass percentage: blast furnace scum 5-10%, steel slag 1-10%, water
Mud 20-40%, shepardite 20-40%, mixture A 10-20% and mixture B10-20%;Mixture A includes anhydrous calcium chloride
And waterglass;Mixture B includes 4A molecular sieve and kaolin.
Preferably, typical but non-limiting curing agent grinding device 120 is ball mill.
Preferably, milling time of the curing agent in curing agent grinding device 120 is 5-10min.
Preferably, milling time of the mud in mud grinding device 220 is 1-2min.
Preferably, typical but non-limiting conveying device 130 is screw conveyor and/or conveyer belt.
Solidification is more easily transported to after curing agent capable of being made to grind by using screw conveyor and/or conveyer belt
In mixing chamber.
In a preferred embodiment, it is equipped with agitating device in solidification mixing chamber, agitating device includes agitating shaft, is stirred
Axis is mixed equipped with agitating paddle, agitating shaft realizes rotation by the drive of stirring motor.
Pass through the rotation realization mud of agitating paddle and being sufficiently mixed for curing agent.
Preferably, the weight ratio of curing agent and mud is 1:(3-8), preferably 1:(5-8), further preferably 1:(5-
6), preferably 1:5.
This ratio can be weighed by early period and be controlled, in order to avoid mud is remained in mud grinding device,
It can be to claim some mud early period more.
Preferably, mud and curing agent after mixing, are rested 3-7 days at room temperature.
It rests at room temperature and refers to standing maintenance under field conditions (factors).Typical but non-limiting number of days of resting is, for example, 3 days,
4 days, 5 days, 6 days or 7 days, then mud is further processed again, such as landfill etc..
In a preferred embodiment, at 222 middle part shaft of bottom plate position at 223 shaft of mill position it is vertical
Distance is 1-5cm.Such as 1cm, 2cm, 3cm, 4cm or 5cm.
By having certain small distance between control bottom plate and mill, the grinding effect of mud, distance can be enhanced
Greatly, grinding effect is poor, and apart from small, particle dirt partial size is too small in mud, and pollutant is easy to overflow, and reduces solidification effect.
In a preferred embodiment, mud grinding device 220 further includes motor 227 and belt 228;Belt 228
One end was sheathed on the disk week of mill 223, and 228 other end of belt is sheathed on the axis of motor 227;Motor 227 drives belt 228
Rotation with movable grinding disc 223 to rotate.
Structure is simpler in such a way that belt transmission rotates mill 223, more efficient, realizes automatic grinding.
Preferably, mud grinding device is metallic.
In a preferred embodiment, the import of curing agent grinding device 120 is located at immediately below material outlet 112,
The material that material outlet 112 is fallen is able to enter in curing agent grinding device 120.
In a preferred embodiment, mud through-hole 226 is located at immediately below sludge outlet 212, and sludge outlet 212 flows
Mud out is able to enter in mud through-hole 226;
Solidify the underface that mixing chamber 230 is located at mud outflux 224, the mud that mud outflux 224 flows out can be into
Enter into solidification mixing chamber 230.
Corresponding position is fallen on after capable of making material or sludge treatment by the setting of underface, eliminates conveying device.
In a preferred embodiment, as shown in figure 3, at 110 lower part material outlet 112 of hopper and/or bucket 210
Bottom cover 301 is equipped at lower part sludge outlet 212;It is rotatablely connected at bottom cover 301 and 110 lower part material outlet 112 of hopper, and/or
It is rotatablely connected at bottom cover 301 and 210 lower part sludge outlet 212 of bucket;Bottom cover 301 can be opened and be closed by shaft.
Preferably, as shown in figure 4, on bottom cover 301 at 110 lower part material outlet 112 of hopper and/or 210 lower part of bucket
Bottom cover 301 at sludge outlet 212 is equipped with gravity display, gravity sensor and controller, and gravity display and gravity pass
Sensor is independently connected with controller;Gravity sensor will be examined for detecting material and/or mud weight on bottom cover 301
It surveys result and is transmitted to controller, controller is for will test as the result is shown in gravity display.
In use, closing bottom cover in curing agent processing system, curing agent composition or curing agent component are put into
In hopper, the weight for being put into material, the convenient plus-minus for carrying out material as needed, to reach required weight can be shown on bottom cover
Amount opens bottom cover when reaching and needing weight, and material can enter next device.
Application method is similarly in sludge treatment system.
It by setting bottom cover and weighing system, weighs to curing agent and mud, facilitates control curing agent and mud
Weight, realize need it is how many claim how much, using it is how many just with how much, with with with using.
In a preferred embodiment, sludge solidification system further includes spherical molding machine (not shown);It is spherical
Molding machine is connect with solidification mixing chamber 230, and the mixed material for solidifying mixing chamber output is able to enter in spherical molding machine.
Forming processes are carried out by mud after solidifying, are processed into coccoid, facilitate that the later period transports and processing uses.
The utility model is further illustrated below by specific embodiment and comparative example, it should be understood, however, that, these
Embodiment is only for being described in more detail and be used, and but should not be understood as limiting the utility model in any form.This reality
It can be by commercially available acquisition with the novel each raw material being related to.
The hardener formula that embodiment and comparative example uses are as follows: press mass percentage: blast furnace scum 5%, steel slag 5%,
Cement 40%, shepardite 20%, anhydrous calcium chloride and waterglass 20% (mass ratio of anhydrous calcium chloride and waterglass is 1:1),
4A molecular sieve and kaolin 10% (4A molecular sieve and kaolinic mass ratio be 1:9).
Embodiment
A kind of sludge solidification system, including curing agent processing system 100 and sludge treatment system 200;Curing agent processing system
System 100 includes hopper 110, curing agent grinding device 120 and conveying device 130, and 110 top of hopper is material inlet 111, hopper
110 lower parts are material outlet 112, and the import of curing agent grinding device 120 is located at immediately below material outlet 112, make material outlet
112 materials fallen are able to enter in curing agent grinding device 120, the outlet and conveying device of curing agent grinding device 120
130 are connected, and the material that conveying device 130 transfers out is able to enter in solidification mixing chamber 230;Sludge treatment system 200 includes
Bucket 210, mud grinding device 220 and solidification mixing chamber 230,210 top of bucket are mud import 211, and 210 lower part of bucket is
Sludge outlet 212;Mud grinding device 220 includes support frame 221, bottom plate 222 and mill 223;Bottom plate 222 is located at support frame
On 221, bottom plate 222 is equipped with mud outflux 224, and the height of mud outflux 224 is lower than on bottom plate 222 and silt on bottom plate 222
Mudflow exports the height of 224 relative positions;It is equipped with a shaft 225 in the middle part of bottom plate 222, is connected above bottom plate 222 by shaft 225
There is mill 223, mud grinding device 220 further includes motor 227 and belt 228;228 one end of belt is sheathed on the disk of mill 223
Zhou Shang, 228 other end of belt are sheathed on the axis of motor 227;Motor 227 drives the rotation of belt 228 to exist with movable grinding disc 223
It is rotated above bottom plate 222, the vertical range of position and position at 223 shaft of mill is 2cm at 222 middle part shaft of bottom plate;Mill
223 are equipped with mud through-hole 226, and mud through-hole 226 is located at immediately below sludge outlet 212, the mud for flowing out sludge outlet 212
It is able to enter in mud through-hole 226, solidifies the underface that mixing chamber 230 is located at mud outflux 224, mud outflux 224
The mud of outflow is able to enter in solidification mixing chamber 230.Solidify and be equipped with agitating device in mixing chamber 230, agitating device includes
Agitating shaft, agitating shaft are equipped with agitating paddle, solidify curing agent and mud flow that mixing chamber 230 carrys out the conveying of conveying device 130
The mud of 224 outflow of outlet is mixed.Curing agent grinding device 120 is ball mill;Conveying device 130 is screw conveyor.
Curing agent is put into hopper 110 according to the ratio that the weight ratio of curing agent and mud is 1:5, mud is put into mud
In bucket 210 (mud can be more), curing agent grinds 5min in the ball mill, and mud is ground in mud grinding device
2min solidifies 7 days after solidification mixing chamber is mixed 30 minutes by finally.
Comparative example 1
A kind of sludge solidification system, including solidification mixing chamber, interior to be equipped with agitating device, agitating device includes agitating shaft, is stirred
Axis is mixed equipped with agitating paddle, curing agent is added in solidification mixing chamber with mud according to ratio same as Example 1 and is carried out
Solidify 7 days after being mixed 30 minutes.
Comparative example 2
A kind of sludge solidification system, including curing agent processing system 100, but not including that sludge treatment system 200, to warp
Curing agent and mud after milled processed are mixed in solidification mixing chamber, and mixed proportion is same as Example 1, stirs 30 minutes
Solidify 7 days afterwards.
Comparative example 3
A kind of sludge solidification system, including sludge treatment system 200, but not including that curing agent processing system 100, to solid
Agent and ground treated mud are mixed in solidification mixing chamber, and mixed proportion is same as Example 1, stirs 30 minutes
Solidify 7 days afterwards.
Test example
Mud after embodiment and comparative example 1-3 are solidified is according to " building test method standard " (GB/T50123-1999)
3 Duplicate Samples are taken, moisture content is measured and unconfined compressive strength is averaged.
After measured, unconfined compressive strength reaches 182KPa, moisture content 53% after embodiment sludge solidification;1 mud of comparative example
Unconfined compressive strength reaches 138KPa, moisture content 65% after solidification;Unconfined compressive strength reaches after 2 sludge solidification of comparative example
165KPa, moisture content 58%;Unconfined compressive strength reaches 152KPa, moisture content 60% after 3 sludge solidification of comparative example.
It can thus be seen that after being handled using the sludge solidification system of the utility model curing agent and mud again into
Row curing process can obtain good solidification effect, and comparative example does not carry out processing to curing agent and mud or only to solid
Agent is only handled mud, and it is good that solidification effect is all not so good as embodiment.
Although illustrate and describing the utility model with specific embodiment, it will be appreciated that without departing substantially from this reality
Many other change and modification can be made in the case where novel spirit and scope.It is, therefore, intended that in appended right
It include all such changes and modifications belonged in the scope of the utility model in it is required that.