CN210764920U - Sludge modification and dehydration system - Google Patents
Sludge modification and dehydration system Download PDFInfo
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- CN210764920U CN210764920U CN201921257864.6U CN201921257864U CN210764920U CN 210764920 U CN210764920 U CN 210764920U CN 201921257864 U CN201921257864 U CN 201921257864U CN 210764920 U CN210764920 U CN 210764920U
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- Prior art keywords
- neutralization
- dosing pump
- tank
- sludge
- monitor
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- 239000010802 sludge Substances 0.000 title claims abstract description 84
- 230000004048 modification Effects 0.000 title claims abstract description 11
- 238000012986 modification Methods 0.000 title claims abstract description 11
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 9
- 230000018044 dehydration Effects 0.000 title claims abstract description 8
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 72
- 239000002253 acid Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000007800 oxidant agent Substances 0.000 claims abstract description 16
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 230000001590 oxidative effect Effects 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 9
- 230000002378 acidificating effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The utility model provides a sludge modification dewatering system, including acidity equalizing basin, dilute acid charge device, dilute acid dosing pump controller, the online pH monitor of acidity equalizing basin, oxidation pond, oxidant charge device, oxidant dosing pump, neutralization pond, neutralization liquid charge device, neutralization liquid dosing pump controller, the online pH monitor of neutralization pond, dewatering device, through carry out advanced oxidation treatment to mud under acidic condition, make mud modified, improve the dehydration nature of mud.
Description
Technical Field
The utility model relates to a sludge treatment field especially relates to a sludge modification dewatering system.
Background
The sludge is a by-product of sewage treatment, and has high yield and high water content. The sludge has complex components, the solid components of the sludge have high organic matter content, and the sludge also contains nutrient components such as nitrogen, phosphorus, potassium and the like, and pollutants such as heavy metal, pathogenic microorganisms and the like, and can be recycled after proper treatment. But the water content of the sludge is high, so that the yield of the sludge is huge. Generally, the water content of sludge which is not dehydrated is about 97 percent, the water content of the dehydrated sludge is about 85 percent, and when the water content of the sludge is reduced from 97 percent to 85 percent, the volume of the sludge is reduced by 80 percent. Therefore, sludge dewatering is the most effective treatment means for sludge reduction.
Generally, the organic matter content of municipal sludge is 40-60%, the dewatering property of the municipal sludge is poor, inorganic flocculant, organic flocculant or other inorganic substances are mostly required to be added to improve the dewatering property of the municipal sludge, however, the water content after dewatering is still 85-90%, the water content is high, and the dry weight of the sludge is increased due to the addition of the inorganic flocculant, the organic flocculant or other inorganic substances.
Disclosure of Invention
The utility model provides a sludge modification dewatering system, through carry out advanced oxidation treatment to mud under the acid condition, make mud modified, improve the dehydration nature of mud.
The utility model adopts the technical proposal that:
a sludge modification dewatering system comprising: the acidity adjusting tank is provided with a dilute acid dosing device, a dilute acid dosing pump controller, an on-line pH monitor of the acidity adjusting tank and a stirring device; the oxidation tank is provided with an oxidant dosing device, an oxidant dosing pump and a stirring device and is connected with the acidity adjusting tank; the neutralization tank is provided with a neutralization solution dosing device, a neutralization solution dosing pump controller, an online pH monitor of the neutralization tank and a stirring device and is connected with the oxidation tank; the dewatering device is connected with the neutralization tank; the on-line pH monitor of the acidity adjusting pool is positioned in the acidity adjusting pool, the diluted acid dosing pump controller is connected with the diluted acid dosing pump and the on-line pH monitor of the acidity adjusting pool, and the dosing amount of the diluted acid dosing pump is controlled through pH data fed back by the on-line pH monitor of the acidity adjusting pool; the on-line pH monitor of the neutralization tank is positioned in the neutralization tank, the neutralization liquid dosing pump controller is connected with the neutralization liquid dosing pump and the on-line pH monitor of the neutralization tank, and the dosing amount of the neutralization liquid dosing pump is controlled through pH data fed back by the on-line pH monitor of the neutralization tank.
A sludge modification dehydration method comprises the steps that a sludge solution enters an acidity adjusting tank, dilute acid is added into the acidity adjusting tank to adjust the pH value of the sludge solution to be 3-4, an online pH monitor of the acidity adjusting tank detects the pH value of the sludge solution and feeds back data, the dosing amount of a dilute acid dosing pump is controlled through a dilute acid dosing pump controller, and the pH value of the sludge solution is kept to fluctuate within a certain range; the acid-washing sludge solution enters the oxidation pond and reacts with the oxidant for at least 20 min; the oxidized sludge solution enters the neutralization tank, a neutralizing agent is added into the neutralization tank, the pH of the sludge solution is adjusted to be 6-8, the online pH monitor of the neutralization tank detects the pH of the sludge solution and feeds back data, the dosing amount of the neutralization liquid dosing pump is controlled through the neutralization liquid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within a certain range; and dehydrating the neutralized sludge to obtain dehydrated sludge.
Preferably, the dilute acid is one or more of dilute inorganic acid or dilute organic acid.
Preferably, the oxidizing agent is one of chlorine dioxide or hydrogen peroxide.
Preferably, the neutralizing agent is one or more of a sodium hydroxide solution, a calcium hydroxide solution, a magnesium hydroxide solution, a calcium oxide solution and a magnesium oxide solution.
The utility model has the advantages that: the utility model discloses it is effectual to dewater, through the utility model discloses the system is handled mud, and the moisture content descends 20% ~30% behind the sludge dewatering.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of a sludge modification and dehydration system of the present invention.
In the figure: 1-acidity adjusting tank, 2-diluted acid dosing device, 3-diluted acid dosing pump, 4-diluted acid dosing pump controller, 5-acidity adjusting tank online pH monitor, 6-oxidation tank, 7-oxidant dosing device, 8-oxidant dosing pump, 9-neutralization tank, 10-neutralization liquid dosing device, 11-neutralization liquid dosing pump, 12-neutralization liquid dosing pump controller, 13-neutralization tank online pH monitor, and 14-dehydration device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model adopts the technical proposal that:
a sludge modification dewatering system comprising: the acidity adjusting tank 1 is provided with a dilute acid dosing device 2, a dilute acid dosing pump 3, a dilute acid dosing pump controller 4, an acidity adjusting tank online pH monitor 5 and a stirring device; the oxidation tank 6 is provided with an oxidant dosing device 7, an oxidant dosing pump 8 and a stirring device and is connected with the acidity adjusting tank 1; the neutralization tank 9 is provided with a neutralization solution dosing device 10, a neutralization solution dosing pump 11, a neutralization solution dosing pump controller 12, a neutralization tank online pH monitor 13 and a stirring device and is connected with the oxidation tank 6; a dewatering device 14 connected with the neutralization tank 9; the acidity adjusting pool online pH monitor 5 is positioned in the acidity adjusting pool 1, the diluted acid dosing pump controller 4 is connected with the diluted acid dosing pump 3 and the acidity adjusting pool online pH monitor 5, and the dosing amount of the diluted acid dosing pump 3 is controlled through pH data fed back by the acidity adjusting pool online pH monitor 5; the neutralization tank online pH monitor 13 is positioned in the neutralization tank 9, the neutralization liquid dosing pump controller 12 is connected with the neutralization liquid dosing pump 11 and the neutralization tank online pH monitor 13, and the dosing amount of the neutralization liquid dosing pump 11 is controlled through pH data fed back by the neutralization tank online pH monitor 13.
A sludge modification dehydration method comprises the steps that a sludge solution enters an acidity adjusting tank 1, dilute acid is added into the acidity adjusting tank 1 to adjust the pH value of the sludge solution to be 3-4, an online pH monitor 5 of the acidity adjusting tank detects the pH value of the sludge solution and feeds back data, the dosing amount of a dilute acid dosing pump 3 is controlled through a dilute acid dosing pump controller 4, and the pH value of the sludge solution is kept to fluctuate within a certain range; the acid-washing sludge solution enters the oxidation pond 6 and reacts with the oxidant for at least 20 min; the oxidized sludge solution enters the neutralization tank 9, a neutralizing agent is added into the neutralization tank 9, the pH of the sludge solution is adjusted to be 6-8, the pH of the sludge solution is detected by the online pH monitor 13 of the neutralization tank, data is fed back, the dosing amount of the neutralization liquid dosing pump 11 is controlled through the neutralization liquid dosing pump controller 12, and the pH of the sludge solution is kept to fluctuate within a certain range; and dehydrating the neutralized sludge to obtain dehydrated sludge.
Example one
The method comprises the following steps that a sludge solution enters an acidity adjusting tank, dilute acid is added into the acidity adjusting tank to adjust the pH of the sludge solution to be 3, an online pH monitor of the acidity adjusting tank detects the pH of the sludge solution and feeds back data, the dosing amount of a dilute acid dosing pump is controlled through a dilute acid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within the range of 2.8-3.2; the acid-washing sludge solution enters the oxidation tank and reacts with the oxidant for 20 min; the oxidized sludge solution enters the neutralization tank, a neutralizer is added into the neutralization tank, the pH of the sludge solution is adjusted to be 6, the online pH monitor of the neutralization tank detects the pH of the sludge solution and feeds back data, the dosing amount of the neutralization liquid dosing pump is controlled through the neutralization liquid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within the range of 6.0-6.2; and dehydrating the neutralized sludge to obtain dehydrated sludge.
Example two
The method comprises the following steps that a sludge solution enters an acidity adjusting tank, dilute acid is added into the acidity adjusting tank to adjust the pH of the sludge solution to be 4, an online pH monitor of the acidity adjusting tank detects the pH of the sludge solution and feeds back data, the dosing amount of a dilute acid dosing pump is controlled through a dilute acid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within the range of 3.8-4.0; the acid-washing sludge solution enters the oxidation pond and reacts with the oxidant for 40 min; the oxidized sludge solution enters the neutralization tank, a neutralizer is added into the neutralization tank, the pH of the sludge solution is adjusted to be 7, the online pH monitor of the neutralization tank detects the pH of the sludge solution and feeds back data, the dosing amount of the neutralization liquid dosing pump is controlled through the neutralization liquid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within the range of 6.8-7.2; and dehydrating the neutralized sludge to obtain dehydrated sludge.
EXAMPLE III
The method comprises the following steps that a sludge solution enters an acidity adjusting tank, dilute acid is added into the acidity adjusting tank to adjust the pH of the sludge solution to be 3.5, an online pH monitor of the acidity adjusting tank detects the pH of the sludge solution and feeds back data, the dosing amount of a dilute acid dosing pump is controlled through a dilute acid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within the range of 3.3-3.7; the acid-washing sludge solution enters the oxidation tank and reacts with the oxidant for 20 min; the oxidized sludge solution enters the neutralization tank, a neutralizer is added into the neutralization tank, the pH of the sludge solution is adjusted to be 8, the online pH monitor of the neutralization tank detects the pH of the sludge solution and feeds back data, the dosing amount of the neutralization liquid dosing pump is controlled through the neutralization liquid dosing pump controller, and the pH of the sludge solution is kept to fluctuate within the range of 7.8-8.0; and dehydrating the neutralized sludge to obtain dehydrated sludge.
Claims (1)
1. A sludge modification and dehydration system is characterized by comprising: the acidity adjusting tank (1) is provided with a dilute acid dosing device (2), a dilute acid dosing pump (3), a dilute acid dosing pump controller (4), an on-line pH monitor (5) of the acidity adjusting tank and a stirring device; the oxidation tank (6) is provided with an oxidant dosing device (7), an oxidant dosing pump (8) and a stirring device and is connected with the acidity adjusting tank (1); the neutralization tank (9) is provided with a neutralization solution dosing device (10), a neutralization solution dosing pump (11), a neutralization solution dosing pump controller (12), an online pH monitor (13) of the neutralization tank and a stirring device and is connected with the oxidation tank (6); a dewatering device (14) connected with the neutralization tank (9); the acidity adjusting tank online pH monitor (5) is positioned in the acidity adjusting tank (1), the dilute acid dosing pump controller (4) is connected with the dilute acid dosing pump (3) and the acidity adjusting tank online pH monitor (5), and the dosing amount of the dilute acid dosing pump (3) is controlled through pH data fed back by the acidity adjusting tank online pH monitor (5); the on-line pH monitor (13) of the neutralization tank is positioned in the neutralization tank (9), the neutralization liquid dosing pump controller (12) is connected with the neutralization liquid dosing pump (11) and the on-line pH monitor (13) of the neutralization tank, and the dosing amount of the neutralization liquid dosing pump (11) is controlled through pH data fed back by the on-line pH monitor (13) of the neutralization tank.
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| CN201921257864.6U CN210764920U (en) | 2019-08-06 | 2019-08-06 | Sludge modification and dehydration system |
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| CN201921257864.6U CN210764920U (en) | 2019-08-06 | 2019-08-06 | Sludge modification and dehydration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112340954A (en) * | 2019-08-06 | 2021-02-09 | 天津壹新环保工程有限公司 | Sludge modification and dehydration system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112340954A (en) * | 2019-08-06 | 2021-02-09 | 天津壹新环保工程有限公司 | Sludge modification and dehydration system and method |
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