CN111718096A - Sludge reduction and concentration equipment - Google Patents
Sludge reduction and concentration equipment Download PDFInfo
- Publication number
- CN111718096A CN111718096A CN201910203206.7A CN201910203206A CN111718096A CN 111718096 A CN111718096 A CN 111718096A CN 201910203206 A CN201910203206 A CN 201910203206A CN 111718096 A CN111718096 A CN 111718096A
- Authority
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- China
- Prior art keywords
- dewatering
- dehydration
- belt
- conveyer belt
- conveying belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 52
- 230000009467 reduction Effects 0.000 title claims abstract description 20
- 230000018044 dehydration Effects 0.000 claims abstract description 49
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001125 extrusion Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000701 coagulant Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 11
- 239000008394 flocculating agent Substances 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- 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
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)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses sludge reduction and concentration equipment which comprises a pre-dewatering conveyor belt, a dewatering clamping conveyor belt, a lower clamping filter belt, a separating conveyor roller and a dewatering extrusion mechanism, wherein the pre-dewatering conveyor belt is arranged on the lower clamping filter belt; the lower extreme of preliminary dehydration conveyer belt is provided with dehydration clamp conveyer belt, the lower extreme of dehydration clamp conveyer belt sets up down and presss from both sides tight filter belt, the mud that preliminary dehydration conveyer belt conveyed is received to dehydration clamp conveyer belt up end, be formed with the clamping area that supplies mud to pass through between lower extreme and the dehydration clamp conveyer belt, it sets gradually separation transfer roller and dehydration extrusion mechanism to press from both sides down the descending region of tight filter belt, utilize dehydration clamp conveyer belt, the gravity dehydration district that the lower clamp filter belt formed, press from both sides tight conveying area and dehydration extrusion area and make mud into the concentrated mud cake of decrement, and the liquid part through the conveying dehydration produces clean liquid and discharges through the water collector after reacting with the flocculating agent.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to sludge reduction and concentration equipment.
Background
Sludge reduction and concentration equipment is often used in the sewage treatment process. The reduction and concentration aims to discharge the liquid part containing the heavy metals in the sludge after the liquid part reacts with the flocculating agent to generate clean liquid, and the solid part forms mud cakes for other use. Traditional mud decrement concentrated process is sewage adds the medicament flocculation back for the filter, and the screw extrusion goes out mud, but traditional screw extruder can't satisfy large batch sludge treatment to there are extrusion mud cake high moisture content, the unfavorable subsequent processing scheduling problem of shaping.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide sludge reduction and concentration equipment.
The invention is realized by the following technical scheme:
a sludge reduction and concentration device comprises a pre-dewatering conveying belt, a dewatering clamping conveying belt, a lower clamping filter belt, a separation conveying roller and a dewatering extrusion mechanism;
the lower extreme of dehydration conveyer belt in advance is provided with dehydration clamp conveyer belt, and the lower extreme of dehydration clamp conveyer belt sets up down and presss from both sides tight filter belt, and the mud that the dehydration clamp conveyer belt conveyed in advance was received to the terminal surface on the dehydration clamp conveyer belt, is formed with the tight district of clamp that supplies mud to pass through between lower extreme and the dehydration clamp conveyer belt, presss from both sides down the down region of tight filter belt and sets gradually separation transfer roller and dehydration extrusion mechanism down.
In the technical scheme, the separating and conveying roller is arranged between the lower clamping filter belt and the dewatering and extruding mechanism, the planes of the separating and conveying roller and the dewatering and extruding mechanism are located on the same horizontal plane, and the separating and conveying roller is arranged independently.
In the technical scheme, the pre-dewatering conveying belt and the dewatering clamping conveying belt are obliquely arranged so that the sludge is conveyed in the direction opposite to the gravity direction.
In the technical scheme, the dewatering and extruding mechanism comprises dewatering and extruding rollers which are arranged from bottom to top and rotate in a coordinated manner and a conveying belt which is used for discharging.
In the technical scheme, the diameter of the roller of the dewatering squeezing roller is gradually reduced from bottom to top, and the pressure is gradually increased from bottom to top.
In the technical scheme, the collecting box is arranged below the conveying belt.
In the technical scheme, the pre-dewatering conveying belt and the dewatering clamping conveying belt are filter belts, and a water receiving plate and a water receiving groove are arranged below the pre-dewatering conveying belt and the dewatering clamping conveying belt.
In the technical scheme, a water receiving plate and a water receiving groove are arranged below the dewatering squeezing roller.
In the technical scheme, a mudguard which is vertically installed is arranged between the pre-dewatering conveying belt and the dewatering clamping conveying belt.
In the above technical scheme, a mixer is arranged above the pre-dewatering conveyor belt and used for mixing the polymer coagulant.
The invention has the advantages and beneficial effects that: a sludge reduction and concentration device comprises a pre-dewatering conveying belt, a dewatering clamping conveying belt, a lower clamping filtering belt, a separating conveying roller and a dewatering extrusion mechanism, wherein a gravity dewatering area, a clamping conveying area and a dewatering extrusion area which are formed by the dewatering clamping conveying belt and the lower clamping filtering belt are used for making sludge into sludge cakes with reduction and concentration, and liquid parts subjected to conveying and dewatering react with a flocculating agent to generate clean liquid which is discharged through a water receiving plate. As the corollary equipment of sewage treatment, can filter-press and dehydrate the suspended solids and sediments after the air flotation treatment and the sludge generated in each biochemical working section in the sewage treatment, and press the sludge into a mud cake, thus achieving the purpose of preventing and treating secondary pollution and being a good solid-liquid separation device; the machine can also be used for pulp concentration, black liquor extraction and various solid-liquid separation processes.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1 is the collecting box, 2 is the conveyer belt, 3 is the dehydration squeeze roll, 4 is the dehydration squeeze mechanism, 5 is the fender, 6 is the dehydration clamp conveyer belt, 7 is the separation transfer roller, 8 is the blender, 9 is the dehydration conveyer belt in advance, 10 is the water receiving board, 11 is the lower clamp filter belt.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example 1
A sludge reduction and concentration device comprises a pre-dewatering conveyor belt, a dewatering clamping conveyor belt, a lower clamping filter belt and a dewatering extrusion mechanism;
the lower extreme of preliminary dehydration conveyer belt is provided with dehydration clamp conveyer belt, and the lower extreme of dehydration clamp conveyer belt sets up down and presss from both sides tight filter belt, and the mud that preliminary dehydration conveyer belt conveyed is received to dehydration clamp conveyer belt up end, is formed with the clamping area that supplies mud to pass through between lower extreme and the dehydration clamp conveyer belt, presss from both sides down the downstream region of filter belt and sets gradually the dehydration extrusion mechanism under. The pre-dewatering conveying belt and the dewatering clamping conveying belt are obliquely arranged so that sludge is conveyed in the direction opposite to the gravity direction. The dehydration extrusion mechanism comprises dehydration extrusion rollers which are arranged from bottom to top and rotate in coordination and a conveying belt which is used for discharging. The diameter of the roller of the dewatering squeezing roller is gradually reduced from bottom to top, and the pressure is gradually increased from bottom to top. And a collecting box is arranged below the conveying belt. The pre-dewatering conveying belt and the dewatering clamping conveying belt are filter belts, and a water receiving plate and a water receiving groove are arranged below the pre-dewatering conveying belt and the dewatering clamping conveying belt. And a water receiving plate and a water receiving groove are arranged below the dewatering squeezing roller. And a mud guard which is vertically arranged is arranged between the pre-dewatering conveying belt and the dewatering clamping conveying belt.
After sludge of a wastewater treatment plant is pumped into a mixer to be mixed with a polymer coagulant (polymer), fine suspended particles in the sludge form larger latex (floc) particles through the bridging action of the polymer coagulant, and then the sludge passes through a pre-gravity dehydration zone to be dehydrated while being conveyed by a conveyor belt, and after the sludge enters a pressure dehydration zone from the gravity dehydration zone, upper and lower filter cloth start to gradually extrude the sludge for dehydration. The sludge enters a pressurizing and dehydrating area along with the movement of the filter cloth, the six vertical rollers are arranged in a way that the diameter of the rollers is gradually reduced from large to small, the pressure is gradually increased from small to small, and capillary bound water (capillarywater) in the glue feather is squeezed out along with the shearing force generated by changing the upper position and the lower position of the upper filter cloth and the lower filter cloth among different rollers to generate a drier sludge cake, and the sludge cake can be further squeezed: the filter pressing liquid is continuously pushed forward to enter a filter for pressing, so that the filter pressing concentration is improved, and the efficiency is improved by 80%. The sludge enters a dynamic (static) mixer through a conveying pump, after the sludge is mixed and fully reacted with a simultaneously added anionic (cationic) flocculant solution with the concentration of 0.05-0.1%, tiny solid particles (or suspended matters) in the sludge slurry are aggregated into flocculent masses with larger volume, bound water and surface water among materials are separated into free water, when the materials are conveyed and spread on a filter screen of an elongated gravity pre-dehydration area (or on a belt concentrator), the free water permeates through the back of the filter screen and is separated under the action of gravity to form sludge in a non-flowing state, the sludge reaches a dehydration and squeezing area to implement a large pressure condition, then the sludge is clamped between an upper mesh belt and a lower mesh belt along with the movement of the mesh belts, passes through a filter belt with adjustable tension and a rotating roller and a counter-pressing roller with gradually reduced diameter to implement continuously increased slow counter-pressing force and shearing force action, and passes through a wedge-shaped area, The low-pressure area, the middle-pressure area, the high-pressure area and the powerful double-roll squeezing area continuously squeeze out moisture in the slag (mud) slurry in a step-by-step pressurizing mode, then form a filter cake with low moisture content to be discharged, the filter cake is scraped away through a scraper, an upper filter belt and a lower filter belt are separated, trace particles in pores on the surface of a filter screen are removed through high-pressure washing water and a rolling brush, and the filter screen continues to enter the next step of dehydration cycle.
Example 2
On the basis of embodiment 1, a mud decrement concentrator still includes the separation transfer roller, the separation transfer roller sets up and presss from both sides tightly between filter belt and the dehydration extrusion mechanism down, and three's plane is located same horizontal plane, and the separation transfer roller is independent setting. Used for discharging sludge with poor quality.
Example 3
In addition to example 1, a mixer for mixing a polymer flocculant is provided above the pre-dewatering conveyor to mix sludge with the polymer flocculant. The flocculated sludge firstly enters a gravity dehydration zone, and most of free water is filtered out through a filter belt under the action of gravity; along with the operation of the filter belts, the sludge enters a wedge-shaped area consisting of two filter belts, the two filter belts slowly pressurize the sludge, the sludge is gradually thickened, the fluidity is reduced, and the sludge is transited to a squeezing area; in the squeezing area, the sludge is subjected to the action of increasing extrusion force and shearing force generated by the alternate change of the upper position and the lower position of the two filter belts, most of free water and interstitial water remained in the sludge are filtered, and the sludge becomes a flaky filter cake with lower water content; the upper and lower filter belts are separated by the discharging roller, the filter cake is scraped off by the change of the curvature of the filter belt, the solid-liquid separation of the materials is realized, and the upper and lower filter belts are reused after being washed for the concentration and filter pressing in the next period.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. The utility model provides a sludge decrement concentrator which characterized in that: comprises a pre-dewatering conveying belt, a dewatering clamping conveying belt, a lower clamping filter belt, a separating conveying roller and a dewatering extrusion mechanism;
the lower extreme of dehydration conveyer belt in advance is provided with dehydration clamp conveyer belt, and the lower extreme of dehydration clamp conveyer belt sets up down and presss from both sides tight filter belt, and the mud that the dehydration clamp conveyer belt conveyed in advance was received to the terminal surface on the dehydration clamp conveyer belt, is formed with the tight district of clamp that supplies mud to pass through between lower extreme and the dehydration clamp conveyer belt, presss from both sides down the down region of tight filter belt and sets gradually separation transfer roller and dehydration extrusion mechanism down.
2. The apparatus for sludge reduction and concentration according to claim 1, wherein: the separating and conveying roller is arranged between the lower clamping filter belt and the dewatering and extruding mechanism, the planes of the separating and conveying roller and the dewatering and extruding mechanism are located on the same horizontal plane, and the separating and conveying roller is arranged independently.
3. The apparatus for sludge reduction and concentration according to claim 1, wherein: the pre-dewatering conveying belt and the dewatering clamping conveying belt are obliquely arranged so that sludge is conveyed in the direction opposite to the gravity direction.
4. The apparatus for sludge reduction and concentration according to claim 1, wherein: the dehydration extrusion mechanism comprises dehydration extrusion rollers which are arranged from bottom to top and rotate in coordination and a conveying belt which is used for discharging.
5. The apparatus for sludge reduction and concentration according to claim 1, wherein: the diameter of the roller of the dewatering squeezing roller is gradually reduced from bottom to top, and the pressure is gradually increased from bottom to top.
6. The apparatus for sludge reduction and concentration according to claim 1, wherein: and a collecting box is arranged below the conveying belt.
7. The apparatus for sludge reduction and concentration according to claim 1, wherein: the pre-dewatering conveying belt and the dewatering clamping conveying belt are filter belts, and a water receiving plate and a water receiving groove are arranged below the pre-dewatering conveying belt and the dewatering clamping conveying belt.
8. The apparatus for sludge reduction and concentration according to claim 1, wherein: and a water receiving plate and a water receiving groove are arranged below the dewatering squeezing roller.
9. The apparatus for sludge reduction and concentration according to claim 1, wherein: and a mud guard which is vertically arranged is arranged between the pre-dewatering conveying belt and the dewatering clamping conveying belt.
10. The apparatus for sludge reduction and concentration according to claim 1, wherein: and a mixer is arranged above the pre-dewatering conveying belt and used for mixing the high-molecular coagulant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203206.7A CN111718096A (en) | 2019-03-18 | 2019-03-18 | Sludge reduction and concentration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203206.7A CN111718096A (en) | 2019-03-18 | 2019-03-18 | Sludge reduction and concentration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111718096A true CN111718096A (en) | 2020-09-29 |
Family
ID=72562275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910203206.7A Pending CN111718096A (en) | 2019-03-18 | 2019-03-18 | Sludge reduction and concentration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111718096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402143A (en) * | 2021-06-29 | 2021-09-17 | 金华职业技术学院 | Sludge dewatering system |
| CN120575873A (en) * | 2025-08-07 | 2025-09-02 | 中国海洋大学 | A plume collection device for a deep-sea mining vehicle and a deep-sea mining vehicle |
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|---|---|---|---|---|
| CN201240986Y (en) * | 2008-07-03 | 2009-05-20 | 沧州众清源环保设备有限责任公司 | Flocculating, concentrating and filter-pressing integrated belt-type press filter |
| CN201250163Y (en) * | 2008-05-21 | 2009-06-03 | 华章电气（桐乡）有限公司 | Circulating squeeze dewatering device |
| CN104829082A (en) * | 2014-02-11 | 2015-08-12 | 季华林 | Sludge solidification machine |
| CN107473563A (en) * | 2017-09-13 | 2017-12-15 | 宜兴市建华成套环保有限公司 | A kind of belt filter press |
| CN109422435A (en) * | 2017-08-25 | 2019-03-05 | 马标 | A kind of sludge dewatering equipment |
-
2019
- 2019-03-18 CN CN201910203206.7A patent/CN111718096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201250163Y (en) * | 2008-05-21 | 2009-06-03 | 华章电气（桐乡）有限公司 | Circulating squeeze dewatering device |
| CN201240986Y (en) * | 2008-07-03 | 2009-05-20 | 沧州众清源环保设备有限责任公司 | Flocculating, concentrating and filter-pressing integrated belt-type press filter |
| CN104829082A (en) * | 2014-02-11 | 2015-08-12 | 季华林 | Sludge solidification machine |
| CN109422435A (en) * | 2017-08-25 | 2019-03-05 | 马标 | A kind of sludge dewatering equipment |
| CN107473563A (en) * | 2017-09-13 | 2017-12-15 | 宜兴市建华成套环保有限公司 | A kind of belt filter press |
Non-Patent Citations (2)
| Title |
|---|
| 中国选矿科技情报网地质矿产网等: "《选矿设备技术研讨会论文集》", 30 September 1987 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113402143A (en) * | 2021-06-29 | 2021-09-17 | 金华职业技术学院 | Sludge dewatering system |
| CN120575873A (en) * | 2025-08-07 | 2025-09-02 | 中国海洋大学 | A plume collection device for a deep-sea mining vehicle and a deep-sea mining vehicle |
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Application publication date: 20200929 |
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