CN112939416A - Sludge dewatering conditioner and sludge dewatering equipment - Google Patents
Sludge dewatering conditioner and sludge dewatering equipment Download PDFInfo
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- CN112939416A CN112939416A CN202110165822.5A CN202110165822A CN112939416A CN 112939416 A CN112939416 A CN 112939416A CN 202110165822 A CN202110165822 A CN 202110165822A CN 112939416 A CN112939416 A CN 112939416A
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- 239000010802 sludge Substances 0.000 title claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 229920000936 Agarose Polymers 0.000 claims abstract description 70
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 49
- 229920001525 carrageenan Polymers 0.000 claims description 44
- 239000000679 carrageenan Substances 0.000 claims description 44
- 229940113118 carrageenan Drugs 0.000 claims description 44
- 235000010418 carrageenan Nutrition 0.000 claims description 44
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 claims description 44
- 238000003756 stirring Methods 0.000 claims description 42
- 230000001050 lubricating effect Effects 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 14
- 239000004519 grease Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000003760 magnetic stirring Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 18
- 208000005156 Dehydration Diseases 0.000 description 13
- 230000018044 dehydration Effects 0.000 description 13
- 238000006297 dehydration reaction Methods 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 9
- 239000010865 sewage Substances 0.000 description 8
- 230000006872 improvement Effects 0.000 description 7
- 239000000499 gel Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 239000011543 agarose gel Substances 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- -1 that is Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a sludge dewatering conditioner and sludge dewatering equipment, wherein the conditioner comprises the following components in percentage by mass: 0.1-10 parts of polyacrylamide and modified agarose. The sludge dewatering conditioner provided by the invention has the advantages that the floc formed by combining polyacrylamide and modified agarose has high strength and good settling property, the solid-liquid separation speed is improved, the sludge interstitial water and surface adsorption water are effectively removed, and the sludge dewatering effect is greatly improved.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a sludge dewatering conditioner and sludge dewatering equipment.
Background
The sludge production of the urban domestic sewage treatment plant when the COD content of the inlet water is about 300mg/L is generally about one thousandth of the sewage treatment capacity (measured by sludge with the water content of about 80% after mechanical dehydration), the sludge production of the high-concentration industrial sewage treatment plant can reach three thousandth to five thousandth of the sewage treatment capacity, and the sludge production of the sewage treatment plant in the printing and dyeing and papermaking industry can reach about four thousandth of the sewage treatment capacity of the sewage treatment plant. Sludge is untreated or improperly treated, which can become a serious environmental hazard and pollute soil, water sources and even food chain belts.
The water content of the sludge in the secondary sedimentation tank of a common sewage plant is 97-99%, the contents of capillary bound water and internal bound water are not high and only account for about 10% of the total water content of the sludge, and surface adsorbed water and interstitial water are main objects for sludge dehydration. Therefore, deep dewatering of sludge is the primary step in sludge treatment.
In the prior art, deep dehydration of sludge is mainly performed by mechanical equipment such as a filter press and a centrifugal dehydrator, and thus improvement of deep dehydration of sludge has been focused on improvement of mechanical equipment such as improvement of pressing efficiency of the filter press, and on pretreatment of sludge, that is, sludge conditioning. Because the improvement of mechanical equipment is limited by the influence of factors such as mechanical structure, equipment power and the like, and the improvement and lifting space is relatively limited, the sludge conditioning is the main improvement direction of the current sludge deep dehydration treatment.
At present, the conventional chemical conditioning is to add a certain flocculant into sludge, wherein the added flocculant generates a chemical reaction on the surface of a sludge micelle or neutralizes charges in sludge colloidal particles, so that the colloidal structure of the sludge is damaged, the affinity between sludge and water is reduced, and finally, the flocculation force of flocs is enhanced, the particles are enlarged and the sludge dewatering performance is improved by adjusting the properties and the arrangement state of floc particle groups. However, the existing flocculant types have some obvious defects, and based on the defects, the design of a new sludge conditioner still has very important value.
Disclosure of Invention
In view of the above, the present invention provides a sludge dewatering conditioner and a sludge dewatering device, which are used for overcoming the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a sludge dewatering conditioner comprises the following components in a mass ratio of 1: 0.1-10 parts of polyacrylamide and modified agarose.
Preferably, the conditioner comprises the following components in a mass ratio of 1: 0.4-6 of polyacrylamide and modified agarose.
Preferably, the conditioner comprises the following components in a mass ratio of 1: 0.8-2 of polyacrylamide and modified agarose.
A modified agarose, the modified agarose made by a method comprising:
(1) adding ethanol into the silica gel lubricating grease, and uniformly mixing to obtain a lubricating solution;
(2) adding carrageenan into water, stirring under the condition of water bath, then adding the lubricating solution into the water, and magnetically stirring to obtain carrageenan liquid;
(3) and adding agarose into the carrageenan solution under the water bath condition, and magnetically stirring to obtain the modified agarose.
Further, in the step (1), the solid-to-liquid ratio of the silicone grease to the ethanol is 1: 0.01-2; the volume ratio of the agarose to the water in the step (2) is 1: 0.5 to 5; the water bath condition in the step (2) is 60-80 ℃; the time of the magnetic stirring step in the step (2) is 1-5 hours; the water bath condition in the step (3) is 70-95 ℃; the time of the magnetic stirring step in the step (3) is 0.5 to 2 hours; the mass ratio of the agarose to the carrageenan to the silica gel lubricating grease is 1: 0.1-2: 0.01-1.5.
Further, the carrageenan is at least one of iota-type carrageenan, gamma-type carrageenan, v-type carrageenan or mu-type carrageenan.
The preparation method of the sludge dewatering conditioner comprises the following steps:
(1) dissolving polyacrylamide in water, and uniformly mixing to obtain a mixed solution;
(2) and heating the mixed solution in water bath, adding the modified agarose into the mixed solution, and magnetically stirring the mixture to obtain the modified agarose.
Further, in the step (1), the solid-to-liquid ratio of polyacrylamide to water is 1: 1 to 20; the temperature of the water bath heating step in the step (2) is 60-90 ℃; the time of the magnetic stirring step in the step (2) is 1 to 5 hours
A sludge dewatering device comprises a stirring tank, a reaction tank and an extrusion mechanism, wherein the stirring tank is connected with the reaction tank through a pipeline, and the reaction tank is connected with the extrusion mechanism through a pipeline;
the extrusion mechanism comprises an extrusion cavity, an extrusion cylinder is arranged in the extrusion cavity, a plurality of water outlet holes are uniformly formed in the extrusion cylinder, a filter screen is arranged on the outer side of the extrusion cylinder, and an extruder is arranged in the extrusion cylinder. The extrusion container is detachably fixed in the extrusion cavity through a buckle. The extruder and the stirrer were purchased from outsourced sources.
Furthermore, one end of the extrusion cavity is connected with the reaction tank through a pipeline, the other end of the extrusion cavity is provided with a discharge hole, the bottom of the extrusion cavity is provided with a water outlet, and a water tank is arranged below the water outlet;
one end in stirring pond be equipped with the feed inlet, be equipped with the charging means on the stirring pond, the sludge dewatering conditioner pass through the charging means add in the stirring pond, the inside in stirring pond is provided with the agitator.
The higher the concentration of pure agarose gel is, the stronger the water holding capacity is, and because the polymeric chain of the carrageenan is built on the spatial network structure of the agarose, the friction force of the blended gel to water molecules is increased, so that the water molecules can not pass through the gel smoothly, and the water holding capacity of the agarose gel is increased, so that the carrageenan is directly added into the agarose, and the dehydration effect of the agarose is reduced.
After the silica gel lubricating grease is mixed with the carrageenan, the friction force of the gel on water molecules is reduced, the water molecules in the sludge interstitial water can rapidly and smoothly pass through the gel, and the dehydration performance of the agarose is improved.
The floccule formed by combining the polyacrylamide and the modified agarose has high strength and good settling property, improves the solid-liquid separation speed, effectively removes the sludge interstitial water and the surface adsorbed water, and greatly improves the sludge dewatering effect.
Compared with the prior art, the invention has the following advantages:
the sludge dewatering conditioner provided by the invention has the advantages that the floc formed by combining polyacrylamide and modified agarose has high strength and good settling property, the solid-liquid separation speed is improved, the sludge interstitial water and surface adsorption water are effectively removed, and the sludge dewatering effect is greatly improved.
The sludge dewatering equipment is provided with the stirring tank, the reaction tank and the extrusion mechanism, sludge is uniformly mixed with a sludge dewatering conditioner through the stirring tank, then the sludge enters the reaction tank to be fully reacted, so that a large amount of gap water and surface adsorption water in the sludge are separated, then the sludge is extruded out through the extrusion mechanism, the sludge is fully dewatered through the arrangement of the extrusion barrel, then particles in the sludge are filtered again through the filter screen, the loss of the sludge is prevented, and the discharged water is further filtered.
Drawings
FIG. 1 is a schematic view of a sludge dewatering apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of an extrusion mechanism according to an embodiment of the present invention.
Description of reference numerals:
1. a stirring tank; 2. a reaction tank; 3. an extrusion mechanism; 4. a feeder; 5. a feed inlet; 6. a stirrer; 7. an extrusion chamber; 8. a discharge port; 9. an extrusion cylinder; 10. a water outlet hole; 11. filtering with a screen; 12. an extruder; 13. a water outlet; 14. a water tank.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
Example 1
A sludge dewatering conditioner comprises the following components in a mass ratio of 1: 1.2 polyacrylamide with modified agarose.
A modified agarose, the modified agarose made by a method comprising:
(1) adding 5ml of ethanol into 5g of silica gel lubricating grease, and uniformly mixing to obtain a lubricating solution;
(2) adding 20g of carrageenan into 20ml of water, stirring the carrageenan in a water bath at the temperature of 75 ℃, then adding the lubricating solution into the water, and magnetically stirring the carrageenan for 5 hours to obtain carrageenan liquid;
(3) 50g of agarose was added to the carrageenan solution under a water bath condition at 85 ℃ and magnetically stirred for 2 hours to obtain modified agarose.
The preparation method of the sludge dewatering conditioner comprises the following steps:
(1) dissolving 50g of polyacrylamide in 100ml of water, and uniformly mixing to obtain a mixed solution;
(2) And heating the mixed solution in a water bath at 80 ℃, adding 60g of modified agarose into the mixed solution, and magnetically stirring the mixture for 5 hours to obtain the modified agarose.
A sludge dewatering device comprises a stirring tank, a reaction tank and an extrusion mechanism, wherein the stirring tank is connected with the reaction tank through a pipeline, and the reaction tank is connected with the extrusion mechanism through a pipeline; the extrusion mechanism comprises an extrusion cavity, an extrusion cylinder is arranged in the extrusion cavity, a plurality of water outlet holes are uniformly formed in the extrusion cylinder, a filter screen is arranged on the outer side of the extrusion cylinder, and an extruder is arranged in the extrusion cylinder. The extrusion container is detachably fixed in the extrusion cavity through a buckle. The extruder and the stirrer were purchased from outsourced sources. And sludge is transferred between the stirring tank and the reaction tank and between the reaction tank and the extrusion mechanism through a pump.
One end of the extrusion cavity is connected with the reaction tank through a pipeline, the other end of the extrusion cavity is provided with a discharge hole, the bottom of the extrusion cavity is provided with a water outlet, and a water tank is arranged below the water outlet; one end in stirring pond be equipped with the feed inlet, be equipped with the charging means on the stirring pond, the sludge dewatering conditioner pass through the charging means add the stirring pond in, the addition of sludge dewatering conditioner is 0.25% of mud quality, the inside in stirring pond is provided with the agitator.
Example 2
A sludge dewatering conditioner comprises the following components in a mass ratio of 1: 5 polyacrylamide and modified agarose.
A modified agarose was used as in example 1.
The preparation method of the sludge dewatering conditioner comprises the following steps:
(1) dissolving 50g of polyacrylamide in 100ml of water, and uniformly mixing to obtain a mixed solution;
(2) and heating the mixed solution in a water bath at 80 ℃, adding 250g of modified agarose into the mixed solution, and magnetically stirring the mixture for 5 hours to obtain the modified agarose.
A sludge dewatering device similar to that of example 1.
Comparative example 1
A sludge dewatering conditioner comprises the following components in a mass ratio of 1: 15 with modified agarose.
A modified agarose was used as in example 1.
The preparation method of the sludge dewatering conditioner comprises the following steps:
(1) dissolving 50g of polyacrylamide in 100ml of water, and uniformly mixing to obtain a mixed solution;
(2) and heating the mixed solution in a water bath at 80 ℃, adding 650g of modified agarose into the mixed solution, and magnetically stirring the mixture for 5 hours to obtain the modified agarose.
A sludge dewatering device similar to that of example 1.
Comparative example 2
A sludge dewatering conditioner was the same as in example 1.
A modified agarose, the modified agarose made by a method comprising:
(1) Adding 20g of carrageenan into 20ml of water, stirring under the water bath condition of 75 ℃ and magnetically stirring for 5 hours to obtain carrageenan liquid;
(2) 50g of agarose was added to the carrageenan solution under a water bath condition at 85 ℃ and magnetically stirred for 2 hours to obtain modified agarose.
The preparation method of the sludge dewatering conditioner is the same as that of the example 1.
A sludge dewatering device similar to that of example 1.
Comparative example 3
A sludge dewatering conditioner was the same as in example 1.
A modified agarose, the modified agarose made by a method comprising:
(1) adding 100ml of ethanol into 100g of silica gel lubricating grease, and uniformly mixing to obtain a lubricating solution;
(2) adding 20g of carrageenan into 20ml of water, stirring the carrageenan in a water bath at the temperature of 75 ℃, then adding the lubricating solution into the water, and magnetically stirring the carrageenan for 5 hours to obtain carrageenan liquid;
(3) 50g of agarose was added to the carrageenan solution under a water bath condition at 85 ℃ and magnetically stirred for 2 hours to obtain modified agarose.
The preparation method of the sludge dewatering conditioner is the same as that of the example 1.
A sludge dewatering device similar to that of example 1.
Comparative example 4
A sludge dewatering conditioner was the same as in example 1.
A modified agarose, the modified agarose made by a method comprising:
(1) Adding 100ml of ethanol into 100g of silica gel lubricating grease, and uniformly mixing to obtain a lubricating solution;
(2) adding 20g of carrageenan into 20ml of water, stirring the carrageenan in water bath at 50 ℃, then adding the lubricating solution into the carrageenan, and stirring the carrageenan for 1 hour to obtain carrageenan liquid;
(3) 50g of agarose was added to the carrageenan solution under a water bath condition at 60 ℃ and stirred for 1 hour to obtain a modified agarose.
The preparation method of the sludge dewatering conditioner is the same as that of the example 1.
A sludge dewatering device similar to that of example 1.
Comparative example 5
A sludge dewatering conditioner is polyacrylamide.
The preparation method of the sludge dewatering conditioner comprises the following steps:
50g of polyacrylamide is dissolved in 100ml of water, and the sludge dewatering conditioner is obtained after uniform mixing.
A sludge dewatering device similar to that of example 1.
Comparative example 6
A sludge dewatering conditioner was the same as in example 1.
A modified agarose was used as in example 1.
The preparation method of the sludge dewatering conditioner is the same as that of the example 1.
The sludge dewatering equipment adopts an outsourced conventional sludge dewatering equipment, and the addition amount of a sludge dewatering conditioner is 0.25 percent of the mass of sludge.
The results of measuring the water content of the sludge before dehydration and the water content of the sludge after dehydration in examples 1 to 2 and comparative examples 1 to 5 are shown in Table 1.
TABLE 1 sludge Water content results
| Water content (%) | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 |
| Raw sludge | 98.2 | 96.8 | 96.2 | 97.5 | 97.1 | 98.8 | 97.2 | 96.7 |
| Dewatered sludge | 34.8 | 38.7 | 57.6 | 77.5 | 64.2 | 60.4 | 67.0 | 47.4 |
As can be seen from table 1, the sludge dewatering effect of the conditioner prepared in example 1 and example 2 and the sludge dewatering effect of the device are significant; in comparative example 1, excessive modified agarose was added, and the dehydration effect was significantly reduced as compared with that of example 1-2; the modified agarose in the comparative example 2 does not adopt the silica gel lubricating grease and the carrageenan for synergistic modification, the carrageenan is simply used for modifying the agarose, and a polymeric chain of the carrageenan is built on a spatial network structure of the agarose, so that the friction force of the blended gel on water molecules is increased, the water molecules cannot smoothly pass through the gel, the water holding capacity of the agarose gel is increased, and the sludge dewatering effect is obviously reduced; in the comparative example 3, the content of the silica gel lubricating grease of the modified agarose is increased, so that excessive lubricating components in the regulator influence the synergistic effect of the modified agarose and the polyacrylamide, and the dehydration rate is reduced; in the comparative example 4, the modified agarose is prepared by adopting low-temperature water bath heating and adopting a conventional stirring mode, so that the carrageenan and the silica gel lubricating grease in the modified agarose can not fully modify the agarose, and the dehydration effect of the modified agarose is influenced; the regulator in the comparative example 5 is polyacrylamide, and the dehydration effect is obviously reduced; compared with the embodiment 1, the sludge dewatering has certain promotion effect on dewatering, the arrangement of the dewatering cylinder can effectively extrude moisture in the extrusion process, and the extruded moisture is filtered and recovered, so that the sludge dewatering is more environment-friendly and saves water resources.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A sludge dewatering conditioner is characterized in that: the conditioner comprises the following components in percentage by mass of 1: 0.1-10 parts of polyacrylamide and modified agarose.
2. The sludge dewatering conditioner of claim 1, wherein: the conditioner comprises the following components in a mass ratio of 1: 0.4-6 of polyacrylamide and modified agarose.
3. The sludge dewatering conditioner of claim 2, wherein: the conditioner comprises the following components in a mass ratio of 1: 0.8-2 of polyacrylamide and modified agarose.
4. A modified agarose, characterized by: the modified agarose is prepared by the method comprising the following steps:
(1) adding ethanol into the silica gel lubricating grease, and uniformly mixing to obtain a lubricating solution;
(2) adding carrageenan into water, stirring under the condition of water bath, then adding the lubricating solution into the water, and magnetically stirring to obtain carrageenan liquid;
(3) and adding agarose into the carrageenan solution under the water bath condition, and magnetically stirring to obtain the modified agarose.
5. The modified agarose of claim 4, wherein: in the step (1), the solid-to-liquid ratio of the silicone grease to the ethanol is 1: 0.01-2; the volume ratio of the agarose to the water in the step (2) is 1: 0.5 to 5; the water bath condition in the step (2) is 60-80 ℃; the time of the magnetic stirring step in the step (2) is 1-5 hours; the water bath condition in the step (3) is 70-95 ℃; the time of the magnetic stirring step in the step (3) is 0.5 to 2 hours; the mass ratio of the agarose to the carrageenan to the silica gel lubricating grease is 1: 0.1-2: 0.01-1.5.
6. The modified agarose of claim 4, wherein: the carrageenan is at least one of iota-type carrageenan, gamma-type carrageenan, v-type carrageenan or mu-type carrageenan.
7. A method for producing a sludge dewatering conditioner according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
(1) dissolving polyacrylamide in water, and uniformly mixing to obtain a mixed solution;
(2) and heating the mixed solution in water bath, adding the modified agarose into the mixed solution, and magnetically stirring the mixture to obtain the modified agarose.
8. The method for preparing a sludge dewatering conditioner according to claim 7, characterized in that: in the step (1), the solid-to-liquid ratio of polyacrylamide to water is 1: 1 to 20; the temperature of the water bath heating step in the step (2) is 60-90 ℃; the time of the magnetic stirring step in the step (2) is 1-5 hours.
9. A sludge dewatering equipment which is characterized in that: the device comprises a stirring tank, a reaction tank and an extrusion mechanism, wherein the stirring tank is connected with the reaction tank through a pipeline, and the reaction tank is connected with the extrusion mechanism through a pipeline;
the extrusion mechanism comprises an extrusion cavity, an extrusion cylinder is arranged in the extrusion cavity, a plurality of water outlet holes are uniformly formed in the extrusion cylinder, a filter screen is arranged on the outer side of the extrusion cylinder, and an extruder is arranged in the extrusion cylinder.
10. The sludge dewatering apparatus of claim 9, wherein: one end of the extrusion cavity is connected with the reaction tank through a pipeline, the other end of the extrusion cavity is provided with a discharge hole, the bottom of the extrusion cavity is provided with a water outlet, and a water tank is arranged below the water outlet;
one end in stirring pond be equipped with the feed inlet, be equipped with the charging means on the stirring pond, the sludge dewatering conditioner pass through the charging means add in the stirring pond, the inside in stirring pond is provided with the agitator.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113493290A (en) * | 2021-09-08 | 2021-10-12 | 江苏国瑞特环保工程技术有限公司 | Heavy metal dehydration water treatment facilities in mud |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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