CN111056722B - Sludge treatment equipment - Google Patents
Sludge treatment equipment Download PDFInfo
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- CN111056722B CN111056722B CN201811210400.XA CN201811210400A CN111056722B CN 111056722 B CN111056722 B CN 111056722B CN 201811210400 A CN201811210400 A CN 201811210400A CN 111056722 B CN111056722 B CN 111056722B
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- mud
- sludge
- sand
- sedimentation
- liquid
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- 239000010802 sludge Substances 0.000 title claims abstract description 192
- 238000004062 sedimentation Methods 0.000 claims abstract description 159
- 239000007788 liquid Substances 0.000 claims abstract description 103
- 239000004576 sand Substances 0.000 claims abstract description 66
- 239000002002 slurry Substances 0.000 claims abstract description 57
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000013049 sediment Substances 0.000 claims description 51
- 238000009825 accumulation Methods 0.000 claims description 36
- 239000006228 supernatant Substances 0.000 claims description 6
- 206010030113 Oedema Diseases 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 45
- 238000010276 construction Methods 0.000 description 25
- 238000001556 precipitation Methods 0.000 description 21
- 239000002245 particle Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 10
- 239000012716 precipitator Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 239000008394 flocculating agent Substances 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 4
- 230000016615 flocculation Effects 0.000 description 4
- 241000521257 Hydrops Species 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides sludge treatment equipment, which comprises a sedimentation device for carrying out primary solid-liquid separation on sludge, a sludge inlet pipe for conveying the sludge to the sedimentation device, and a first liquid outlet pipe for discharging slurry in the sedimentation device, wherein the sedimentation device comprises a primary sedimentation tank, a hollow shell covered on the primary sedimentation tank, and a effusion cover arranged in the hollow shell, the effusion cover separates the hollow shell to form a first sand-mud sedimentation area and a second sand-mud sedimentation area, a gap channel for slurry to flow from the first sand-mud sedimentation area to the second sand-mud sedimentation area is formed between the outer peripheral surface of the effusion cover and the inner side wall of the hollow shell, and the slurry in the primary sedimentation tank is reversely discharged through the effusion cover. The invention aims to solve the problems of lower sludge treatment efficiency with lower water content and larger sand content caused by higher requirement on the water content of sludge and narrower adaptability of the content of sludge sand in bottom sludge dredging equipment in the prior art.
Description
Technical Field
The invention belongs to the technical field of sludge treatment engineering, and particularly relates to sludge treatment equipment.
Background
At present, in the dredging construction process of the bottom mud, two construction modes of water construction and land construction are generally divided, and the bottom mud conveying mode corresponding to the two construction modes mainly adopts three conveying modes, namely a water conveying mode adopting a water conveying tool such as a barge, a land conveying mode adopting a land conveying mode such as a slurry liquid conveying vehicle and a conveying mode adopting pipeline conveying. In the prior art, sediment dredging construction operation is generally completed by matching a certain number of barges with sediment dredging construction equipment. However, the traditional sediment dredging equipment has the defects of higher requirement on the water content of the inlet sediment and narrower adaptability of the content of the mud and sand, so that the sediment dredging construction equipment has lower sludge treatment efficiency on the sludge with lower water content and larger sand content, and the requirements of high-efficiency construction treatment on the sludge with lower water content and larger sand content in the dredging area of the sediment in rivers and lakes are difficult to be met.
Disclosure of Invention
The invention aims to provide sludge treatment equipment, and aims to solve the problems of lower sludge treatment efficiency with lower water content and larger sand content caused by higher requirement on the water content of sludge and narrower adaptability of the content of sludge sand in bottom sludge dredging equipment in the prior art.
In order to achieve the above object, the present invention provides a sludge treatment apparatus, including a sedimentation device for solid-liquid separation of sludge, a sludge inlet pipe for conveying the sludge to the sedimentation device, and a first liquid discharge pipe for discharging slurry in the sedimentation device, wherein the sedimentation device includes a primary sedimentation tank for separating sludge from sand, and a hollow housing covered on the primary sedimentation tank, a liquid accumulation cover is disposed in the hollow housing and above the primary sedimentation tank, the liquid accumulation cover separates the hollow housing to form a first sand and sludge sedimentation area and a second sand and sludge sedimentation area, one end of the sludge inlet pipe extends into the first sand and sludge sedimentation area, a gap channel for the slurry to flow from the first sand and sludge sedimentation area to the second sand and sludge sedimentation area is formed between the outer peripheral surface of the liquid accumulation cover and the inner side wall of the hollow housing, the primary sedimentation tank is disposed in the second sand and sludge sedimentation area, the liquid accumulation cover is disposed on the hollow housing to form a first sand and sludge sedimentation area and a second sand and sludge sedimentation area, one end of the sludge inlet pipe extends into the first sand and sludge sedimentation area, and a second sludge outlet pipe extends from the first end of the first sand and sludge sedimentation area to the second sand and sludge sedimentation area.
Further, the hydrops cover comprises a hollow cylinder body with two open ends and a cover surface arranged on the opening of the upper end of the hollow cylinder body, a liquid inlet is formed in the opening of the lower end of the hollow cylinder body, and a first through hole for the first liquid discharge pipe to pass through is formed in the cover surface.
Further, the cover surface is arranged in a conical surface.
Further, the hollow cylinder body is in a truncated cone shape or a horn shape with the diameter gradually increasing from top to bottom.
Further, the sludge treatment equipment further comprises a sloping plate settler, and the sloping plate settler is arranged in the hollow cylinder body.
Further, the sludge treatment equipment further comprises a first sludge hopper arranged in the primary sedimentation tank, a filter press for carrying out filter pressing solidification on the sludge, and a first sludge conveying pipe for conveying the sludge in the first sludge hopper to the filter press, wherein one end of the first sludge conveying pipe is connected with the first sludge hopper, and the other end of the first sludge conveying pipe is connected with the filter press.
Further, the sludge treatment equipment further comprises a concentration sedimentation tank for sedimentation of slurry discharged from the sedimentation device, and one end of the first liquid discharge pipe extending to the outside of the hollow shell is communicated with the concentration sedimentation tank.
Further, a water collecting tank for collecting supernatant in the concentrated sedimentation tank, a second sludge collecting hopper for collecting slurry in the concentrated sedimentation tank, a drain pipe for discharging supernatant in the water collecting tank, and a second sludge conveying pipe for outputting slurry in the second sludge collecting hopper to the concentrated sedimentation tank are arranged in the concentrated sedimentation tank, one end of the drain pipe is communicated with the water collecting tank, one end of the second sludge conveying pipe is communicated with the second sludge collecting hopper, and the other end of the second sludge conveying pipe extends to the outside of the concentrated sedimentation tank.
Further, the sludge treatment equipment further comprises a liquid collecting tank for containing slurry liquid separated by filter pressing of the filter press, and a second liquid discharge pipe for conveying the slurry liquid in the liquid collecting tank to the concentration sedimentation tank, wherein one end of the second liquid discharge pipe is connected to the concentration sedimentation tank, the other end of the second liquid discharge pipe is connected to the liquid collecting tank, and one end of the second slurry conveying pipe extending to the outside of the concentration sedimentation tank is connected to the filter press.
Further, the sludge treatment equipment further comprises a rotary screen, wherein the rotary screen is arranged in the first sand-mud precipitation area and is positioned above the effusion cover, and the rotary screen is connected with one end of the mud inlet pipe extending into the first sand-mud precipitation area.
The sludge treatment equipment provided by the invention has the beneficial effects that: compared with the prior art, the sludge treatment equipment provided by the invention has the advantages that the liquid accumulation cover is arranged in the hollow shell covered on the primary sedimentation tank, the flowing speed of sludge is reduced due to the shielding effect of the liquid accumulation cover, the sand with larger particle density and part of the mud in the sludge in the first sand and mud sedimentation zone are forced to be subjected to primary sedimentation on the top surface of the liquid accumulation cover, and the sediments after sedimentation fall into the second sand and mud sedimentation zone along the outer side wall of the liquid accumulation cover in a relatively slow and dispersive manner along with mud liquid, and secondary sedimentation is carried out in the primary sedimentation tank of the second sand and mud sedimentation zone. Meanwhile, in the process that slurry in the primary sedimentation tank is reversely discharged through the hydrops cover in an overflow mode, large granular substances in the slurry fall into the primary sedimentation tank to carry out secondary sedimentation under the reverse blocking effect of the inner side wall of the hydrops cover, so that the aims of rapidly and efficiently treating sludge with lower water content and larger sand content are fulfilled, and the problems of higher requirement on the water content of the inlet sludge, narrower adaptability of the sediment content of the sludge and lower sludge treatment efficiency of the traditional sediment dredging equipment are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a sludge treatment apparatus according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sludge treatment apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sludge treatment apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sludge treatment apparatus according to a fourth embodiment of the present invention.
Wherein, each reference numeral in the figure mainly marks:
1-a precipitation device; 11-a primary sedimentation tank; 12-a hollow housing; 2-a dropsy cover; 21-a hollow cylinder; 22-finishing; 3-inclined plate settler; 4-drum screen; 5-a first sludge hopper; 6-a filter press; 7-concentrating and settling pond; 8-a water collecting tank; 9-a second sludge hopper; 10-a liquid collecting tank; 100-mud inlet pipe; 200-a first drain; 300-a first sand and mud precipitation zone; 400-a second sand-mud precipitation zone; 500-gap channels; 600-a first mud pipe; 700-drainage pipe; 800-a second mud pipe; 900-second drain.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.
In the description of the present invention, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 together, the sludge treatment apparatus provided by the present invention will now be described. The first embodiment of the invention provides a sludge treatment device, which comprises a sedimentation device 1 for carrying out primary solid-liquid separation on sludge (water-containing sediment, sediment and sediment), a sludge inlet pipe 100 for conveying the sludge to the sedimentation device 1, and a first liquid discharge pipe 200 for discharging the sludge liquid after the solid-liquid separation in the sedimentation device 1, wherein the sedimentation device 1 comprises a primary sedimentation tank 11 for carrying out sediment separation on the sludge, a hollow shell 12 covered on the primary sedimentation tank 11, and a liquid accumulation cover 2 arranged in the hollow shell 12 and positioned above the primary sedimentation tank 11, the liquid accumulation cover 2 separates the hollow shell 12 to form a first sediment region 300 positioned at the upper part and a second sediment region 400 positioned at the lower part, one end of the sludge inlet pipe 100 extends into the first sediment region 300, a clearance channel 500 for the sludge liquid flowing from the first sediment region 300 to the second sediment region 400 is formed between the outer peripheral surface of the liquid accumulation cover 2 and the inner side wall of the hollow shell 12, the primary sedimentation tank 11 is arranged in the second sediment region 400, the liquid accumulation cover 2 is arranged in the first sediment region 2 and extends to the other end of the hollow tube 200 through the first liquid discharge pipe 200, and the liquid discharge hole extends to the other end of the hollow shell 200 through the first hole.
When the sludge treatment equipment provided by the invention works, sludge (water-containing sand-containing dredging bottom sludge) is conveyed into the first sand and mud sedimentation zone 300 through the dredging equipment by the mud inlet pipe 100, and due to the shielding effect of the effusion cover 2 separated between the first sand and mud sedimentation zone 300 and the second sand and mud sedimentation zone 400, the sludge entering the first sand and mud sedimentation zone 300 is forced to slowly and dispersedly flow along the top surface of the effusion cover 2 and towards the periphery of the effusion cover 2, then falls into the second sand and mud sedimentation zone 400 through the clearance channel 500 between the effusion cover 2 and the hollow shell 12, and secondary sedimentation occurs in the primary sedimentation tank 11 of the second sand and mud sedimentation zone 400. In the process that the sludge falls into the second sand and mud sedimentation zone 400 from the first sand and mud sedimentation zone 300, as the sludge conveyed by the sludge inlet pipe 100 does not directly fall into the primary sedimentation tank 11 to be sedimented, the sludge slurry is forced to slowly and dispersedly flow in the first sand and mud sedimentation zone 300 along the top surface of the effusion cover 2 towards the periphery of the effusion cover 2 under the transverse shielding of the effusion cover 2, so that the flow rate of the sludge slurry is rapidly reduced, and the sand with larger particle density and part of the sludge in the slowly flowing sludge slurry are sedimented on the top surface of the effusion cover 2; the sand and part of the mud with larger particle density, which are precipitated on the top surface of the effusion cover 2, then fall into the gap channels 500 around the effusion cover 2 under the action of self gravity inertia or the subsequent mud slurry which is continuously dispersed and flowed, finally fall into the primary sedimentation tank 11 in the second sand and mud sedimentation zone 400 in a concentrated manner through the gap channels 500 between the effusion cover 2 and the hollow shell 12, and slow sedimentation occurs in the primary sedimentation tank 11. Meanwhile, the slurry which is not deposited in the primary sedimentation tank 11 reversely passes through the cavity of the effusion cover 2 from the primary sedimentation tank 11 in an overflow way and is discharged through the liquid outlet pipe, and in the process that the slurry reversely passes through the effusion cover 2 from the sedimentation tank, large granular matters contained in the slurry are reversely blocked on the inner side wall of the effusion cover 2 and fall into the primary sedimentation tank 11, so that the purpose of rapidly and efficiently treating the sludge with lower water content and larger sand content is achieved, and the problems of higher requirement on the sludge inlet water content, narrower adaptability of the sludge and lower sludge treatment efficiency in the traditional bottom sludge dredging equipment are solved.
Compared with the prior art, the sludge treatment equipment provided by the invention has the advantages that the liquid accumulation cover 2 is arranged in the hollow shell 12 covered on the primary sedimentation tank 11 of the sedimentation device 1, the liquid accumulation cover 2 separates the hollow shell 12 to form the first sand and mud sedimentation zone 300 and the second sand and mud sedimentation zone 400, the flowing speed of the sludge is reduced due to the shielding effect of the liquid accumulation cover 2, the sand with larger particle density and part of the mud in the sludge in the first sand and mud sedimentation zone 300 are forced to be subjected to primary sedimentation on the top surface of the liquid accumulation cover 2, and the sediments after sedimentation fall into the second sand and mud sedimentation zone 400 along with mud slurry relatively slowly and dispersedly along the outer side wall of the liquid accumulation cover 2, and secondary sedimentation occurs in the primary sedimentation tank 11 of the second sand and mud sedimentation zone 400. Meanwhile, in the process that slurry liquid which is not deposited in the primary sedimentation tank 11 reversely passes through the effusion cover 2 in an overflow mode and is discharged, large granular substances in the slurry liquid fall into the primary sedimentation tank 11 to carry out secondary sedimentation under the reverse blocking action of the inner side wall of the effusion cover 2, so that the aims of rapidly and efficiently treating the sludge with lower water content and larger sand content are fulfilled, and the problems of higher requirement on the water content of the sludge, narrower adaptability of the sediment content of the sludge and lower sludge treatment efficiency in the traditional sediment dredging equipment are solved.
Further, referring to fig. 1 together, as a specific embodiment of the sludge treatment apparatus provided by the present invention, the effusion cover 2 includes a hollow cylinder 21 having two open ends and a cover surface 22 disposed on the upper open end of the hollow cylinder 21, the lower open end of the hollow cylinder 21 forms a liquid inlet 23, the liquid inlet 23 of the effusion cover 2 faces the primary sedimentation tank 11, and the cover surface 22 of the effusion cover 2 is provided with a first through hole for the first liquid discharge pipe 200 to pass through. When the sludge treatment equipment works, slurry in the sedimentation tank can reversely pass through the liquid accumulation cover 2 from the bottom of the sedimentation tank through the liquid inlet 23 at the bottom end of the liquid accumulation cover 2 and is discharged through the liquid outlet pipe, in the process that the slurry reversely passes through the liquid accumulation cover 2 from the bottom of the sedimentation tank, large granular substances contained in the slurry are reversely blocked by the inner side wall of the liquid accumulation cover 2 and the inner side surface of the cover surface 22 to fall into the sedimentation tank, and meanwhile, part of the muddy substances contained in the slurry can be slowly deposited on the inner side wall of the liquid accumulation cover 2 and the inner side surface of the cover surface 22, so that the sediment separation treatment effect and treatment efficiency in the sludge are further improved, the using amount of flocculating agent in a subsequent flocculation tank is reduced, and the sludge treatment cost is saved.
Further, referring to fig. 1, as a specific embodiment of the sludge treatment apparatus provided by the present invention, the cover surface 22 of the effusion cover 2 is provided with a conical surface, so that the sand with larger particle density and part of the mud precipitated on the cover surface 22 of the effusion cover 2 can slide down along the conical surface under the action of gravity, and can timely and rapidly fall into the first mud collecting hopper 5 below the effusion cover 2 through the gap channel 500 between the effusion cover 2 and the hollow shell 12, thereby improving the efficiency of solid-liquid separation of mud in mud liquid, and simultaneously preventing local deposition caused by excessive accumulation thickness of the sand with larger particle density and part of mud precipitated on the effusion cover 2.
Further, referring to fig. 1, as a specific embodiment of the sludge treatment apparatus provided by the present invention, the hollow cylinder 21 of the effusion housing 2 is provided in a truncated cone shape or a horn shape with gradually increasing diameter from top to bottom. On one hand, the slurry at the bottom of the sedimentation tank reversely passes through the liquid accumulation cover 2 and is discharged through the liquid outlet pipe, so that a good effect can be achieved, and meanwhile, large granular substances in the slurry are blocked and precipitated to improve the sludge treatment rate and effect; on the other hand, the slurry and the precipitated sand and part of the silt with higher particle density fall into the flow rate of the sedimentation tank, so that the slurry under the liquid accumulation cover 2 is prevented from being greatly disturbed by the sand and part of the silt with higher particle density, and the solid-liquid separation effect and the sand-mud separation efficiency are reduced.
Further, referring to fig. 1 together, as a specific embodiment of the sludge treatment apparatus provided by the present invention, the sludge treatment apparatus further includes an inclined plate settler 3, and the inclined plate settler 3 is disposed in the hollow cylinder 21 of the effusion housing 2. The inclined plate precipitator 3 is arranged in the liquid accumulation cover 2, so that when slurry in the sedimentation tank reversely passes through the liquid accumulation cover 2 from the bottom of the sedimentation tank through the liquid inlet 23 of the liquid accumulation cover 2, the flow section of the slurry reversely passing through the liquid accumulation cover 2 from the bottom of the sedimentation tank is further enlarged due to the effect of the inclined plate 31 of the inclined plate precipitator 3, large granular matters in the slurry are blocked by the inclined plate and fall onto the adjacent inclined plate 31, then fall into the sedimentation tank and slowly deposit in the first mud collecting hopper 5, the sedimentation speed of the sludge in the slurry is further accelerated, the sludge treatment efficiency is improved, the purpose of separating the mud in the slurry in the sedimentation tank is achieved, the using amount of flocculating agents in the follow-up flocculation tank is reduced, and the sludge treatment cost is saved, thereby solving the technical problems of low sludge treatment efficiency, low large granular matter treatment effect in the slurry, low mud separation speed in the slurry and large flocculating agent using amount in the conventional primary sedimentation tank 11.
Further, referring to fig. 2, as a specific implementation of the sludge treatment apparatus provided in the second embodiment of the present invention, the sludge treatment apparatus provided in the second embodiment of the present invention is mainly different from the sludge treatment apparatus provided in the first embodiment of the present invention in that the sludge treatment apparatus further includes a trommel 4 for removing large-particle sediment, solid garbage, and other substances in the sludge, the trommel 4 is disposed in the first sand-mud precipitation area 300 and above the effusion cover 2, and the trommel 4 is connected to one end of the sludge inlet pipe 100 extending into the first sand-mud precipitation area 300. When the sludge treatment equipment provided by the embodiment works, sludge is conveyed to the rotary screen 4 through the sludge inlet pipe 100, substances such as large-particle sediments and solid wastes mixed in the sludge are screened out by the rotary screen 4, and then filtered slurry liquid is screened out by the rotary screen 4 and falls onto the effusion cover 2 below the rotary screen 4, so that the purpose of separating the large-particle sediments and the solid wastes from the slurry liquid is achieved, the solid-liquid separation burden of the sedimentation device 1 is reduced, the sludge treatment efficiency of the stage sedimentation device is improved, and the sediment separation effect of the sedimentation device 1 is improved. The large-particle sediment in this embodiment refers to a particle sediment with a particle diameter larger than the diameter of the screen holes of the trommel, or a particle sediment which cannot fall into the first sand-mud sediment zone 300 through the screen holes of the trommel, and the actual particle size of the large-particle sediment in this embodiment is determined by the specification required by sludge treatment construction.
Further, referring to fig. 3 together, as a specific implementation manner of the sludge treatment apparatus according to the third embodiment of the present invention, the sludge treatment apparatus according to the third embodiment of the present invention is different from the sludge treatment apparatus according to the first embodiment of the present invention in that the sludge treatment apparatus further includes a first sludge hopper 5 disposed in the primary sedimentation tank 11, a filter press 6 for press-filtering and solidifying the sludge, and a first sludge pipe 600 for conveying the sludge in the first sludge hopper 5 to the filter press 6, wherein one end of the first sludge pipe 600 is connected to the first sludge hopper 5, and the other end of the first sludge pipe 600 is connected to the filter press 6. The first sludge collecting hopper 5 is arranged in the primary sedimentation tank 11, so that the sand mud slurry separated and settled in the sedimentation device 1 can be conveniently and rapidly deposited in the first sludge collecting hopper 5, and the deposited sand mud slurry can be rapidly output out of the primary sedimentation tank 11 of the sedimentation device 1, so that the sediment treatment efficiency of the sludge treatment equipment is improved. The sediment device 1 is used for precipitating and separating mud, filtering and dewatering the mud by the filter press 6 to form mud cakes, so that the occupied space of the mud is reduced, the water and/or land transportation is facilitated, the transportation quantity of water and/or land transportation tools is reduced, and the dredging construction cost of the sediment is reduced, thereby overcoming the defect that the traditional barge equipment adopts an overflow mode to load the transportation mud to easily cause serious secondary pollution to a construction water body and cannot meet the environment-friendly dredging or environment-friendly dredging requirements, and solving the problems that the land mud transportation vehicle is high in implementation quantity of the sediment transportation task, the urban transportation pressure is increased, the traffic jam is even caused, the transportation cost of the land mud transportation vehicle is high, and the construction efficiency is severely limited by the urban transportation condition.
Further, referring to fig. 4, as a specific implementation of the sludge treatment apparatus provided in the fourth embodiment of the present invention, the sludge treatment apparatus provided in the fourth embodiment of the present invention is mainly different from the sludge treatment apparatus provided in the first embodiment of the present invention in that the sludge treatment apparatus further includes a concentration sedimentation tank 7 for flocculating and settling the slurry discharged from the sedimentation device 1, and the first liquid discharge pipe 200 extends to one end outside the hollow shell 12 and is communicated with the concentration sedimentation tank 7, so as to discharge the slurry discharged from the sedimentation device 1 into the concentration sedimentation tank 7, and by adding a flocculating agent into the slurry in the concentration sedimentation tank 7, the flocculating and settling of the slurry is accelerated, so as to realize the mud-water separation and conditioning modulation of the slurry-containing sewage, and provide a reasonable, efficient and integrated treatment for dredging sludge treatment engineering.
Further, referring to fig. 4, as a specific embodiment of the sludge treatment apparatus provided by the present invention, a water collecting tank 8 for collecting supernatant in the concentration and precipitation tank 7, a second sludge hopper 9 for collecting precipitated sludge in the concentration and precipitation tank 7, a water drain pipe 700 for draining supernatant in the water collecting tank 8, and a second sludge pipe 800 for outputting sludge in the second sludge hopper 9 to the concentration and precipitation tank 7 are provided in the concentration and precipitation tank 7, one end of the water drain pipe 700 is communicated with the water collecting tank 8, one end of the second sludge pipe 800 is communicated with the second sludge hopper 9, and the other end of the second sludge pipe 800 extends to the outside of the concentration and precipitation tank 7. When the device works, the flocculated and precipitated slurry in the concentration and precipitation tank 7 falls into the second sludge hopper 9 in a concentrated manner and is discharged to the outside of the concentration and precipitation tank 7 through the second sludge conveying pipe 800; the supernatant fluid after mud-water separation in the concentration sedimentation tank 7 is collected in the water collecting tank 8 in a concentrated manner and then is discharged into the construction water body through the drain pipe 700, so that the purpose of mud-water separation and conditioning modulation of mud-containing sewage is achieved, environment-friendly and efficient sewage treatment is provided for dredging sediment treatment engineering, and secondary pollution of the mud-containing sewage to the construction water body is avoided.
Further, referring to fig. 4, as a specific embodiment of the sludge treatment apparatus provided by the present invention, a precipitator 20 is further disposed in the concentration and precipitation tank 7, and the precipitator 20 is a vertical flow precipitator or a cyclone precipitator to increase the slurry precipitation efficiency of the concentration and precipitation tank 7.
Further, referring to fig. 4, as a specific embodiment of the sludge treatment apparatus provided by the present invention, the sludge treatment apparatus further includes a liquid collecting tank 10 for receiving the slurry separated by the filter press 6, and a second liquid discharge pipe 900 for conveying the slurry in the liquid collecting tank 10 to the concentration and precipitation tank 7, wherein one end of the second liquid discharge pipe 900 is connected to the concentration and precipitation tank 7, the other end of the second liquid discharge pipe 900 is connected to the liquid collecting tank 10, and one end of the second slurry conveying pipe 800 extending to the outside of the concentration and precipitation tank 7 is connected to the filter press 6. When the device works, mud liquid separated after mud is pressed and filtered by the filter press 6 to form mud cakes is concentrated and contained in the liquid collecting tank 10, and then is conveyed into the concentration sedimentation tank 7 through the second liquid discharge pipe 900 for flocculation sedimentation; the mud after flocculation and precipitation in the concentration sedimentation tank 7 is concentrated and falls into the second mud collecting hopper 9, and then is conveyed to the filter press 6 through the second mud conveying pipe 800, the filter press 6 is used for carrying out filter pressing and dehydration on the mud separated from the concentration sedimentation tank 7 and forming mud cakes, the occupied space of the mud is reduced, the water and/or land transportation is facilitated, the transportation quantity of water and/or land transportation tools is reduced, the mud treatment transportation efficiency is improved, and the dredging construction cost of the sediment is reduced, thereby overcoming the defect that the traditional barge equipment adopts an overflow mode to load the transportation mud, so that serious secondary pollution is easily caused to the construction water, and the environment-friendly dredging or environment-friendly dredging requirement cannot be met, solving the problems that the ground mud transportation vehicle is used for carrying out the sediment transportation, the urban transportation pressure is increased, and even the traffic jam is caused, the transportation cost of the ground mud transportation vehicle is high, and the construction efficiency is seriously limited by the urban traffic condition, and the reasonable, high-efficiency, environment-friendly and integrated treatment is provided for dredging sediment treatment engineering.
The sludge treatment equipment provided by the invention has the main advantages that the equipment is integrated with the devices applied to a plurality of sludge treatment process links such as bottom sludge dredging, garbage separation, sediment separation, mud-water separation, sewage conditioning modulation, dehydration solidification and the like. As shown in fig. 4, the sludge treatment equipment provided by the invention comprises a rotary screen 4, a primary sedimentation tank 11, a liquid accumulation cover 2, an inclined plate precipitator 3, a concentration sedimentation tank 7, a filter press 6 and the like, wherein the sedimentation device 1, the liquid accumulation cover 2 and the inclined plate precipitator 3 are added on the basis of the prior art equipment, the integration degree is high, the integrated functions are integrated, the size is relatively small, the equipment is more convenient to move, a truck or a ship can be used as mobile equipment, the equipment is suitable for the characteristic of frequent change of a construction place, the applicability to mud-entering sand is wider, the sludge treatment efficiency of the integrated equipment with lower water content and large sand content is remarkably improved, so that the sludge treatment efficiency of the integrated equipment with lower water content and large sand content is greatly improved, the flocculant consumption is reduced, and the dredging bottom mud cost is reduced. Therefore, the sludge treatment equipment provided by the invention is applied to environment-friendly dredging of river and lake polluted sediment and sediment treatment or pretreatment engineering, so that a reasonable, efficient and integrated treatment technology and equipment are provided for the sediment treatment engineering, and the defect that the traditional sediment dredging construction equipment is relatively large in size matched with a barge, inconvenient to move, unavailable in trucks or ship moving equipment, unsuitable for the characteristic of frequent change of construction sites and poor in universality in different occasions is overcome; the adaptability to the content of the mud sand is narrow, so that the sludge treatment efficiency with lower water content and high sand content is lower; the defect of low sludge treatment efficiency and large flocculant consumption is overcome, and the problem that the traditional sediment dredging construction equipment is intermittent when matched with a barge for sediment dredging construction operation is solved, so that the construction efficiency is low; the barge carries out water loading and transportation on the silt in an overflow mode, and the problem of serious secondary pollution to construction water is easy to cause.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. A sludge treatment facility, includes the sediment device that is used for carrying out solid-liquid separation with mud, is used for carrying mud to sediment device's advance mud pipe, and is used for the first fluid-discharge tube of the mud liquid discharge in the sediment device, its characterized in that: the sedimentation device comprises a primary sedimentation tank for separating mud from sand and a hollow shell covered on the primary sedimentation tank, wherein a liquid accumulation cover is arranged in the hollow shell and above the primary sedimentation tank, the liquid accumulation cover separates the hollow shell to form a first sand and mud sedimentation area and a second sand and mud sedimentation area, one end of a mud inlet pipe extends into the first sand and mud sedimentation area, a clearance channel for mud liquid to flow from the first sand and mud sedimentation area to the second sand and mud sedimentation area is formed between the outer peripheral surface of the liquid accumulation cover and the inner side wall of the hollow shell, the primary sedimentation tank is arranged in the second sand and mud sedimentation area, a first through hole for a first liquid discharge pipe to pass through is formed in the liquid accumulation cover, one end of the first liquid discharge pipe extends into a cavity of the liquid accumulation cover through the first through hole, and the other end of the first liquid discharge pipe extends to the outside of the hollow shell;
the dropsy cover comprises a hollow cylinder body with two open ends and a cover surface arranged on the upper opening of the hollow cylinder body, a liquid inlet is formed on the lower opening of the hollow cylinder body, and the cover surface is provided with a first through hole for the first liquid discharge pipe to pass through;
the cover surface is arranged in a conical surface;
the hollow cylinder body is in a truncated cone shape or a horn shape with the diameter gradually increasing from top to bottom;
the sludge treatment equipment further comprises an inclined plate settler, and the inclined plate settler is arranged in the hollow cylinder body;
the sludge treatment equipment further comprises a rotary screen, wherein the rotary screen is arranged in the first sand and mud sedimentation area and is positioned above the effusion cover, and the rotary screen is connected with one end of the mud inlet pipe extending to the first sand and mud sedimentation area.
2. The sludge treatment apparatus of claim 1 wherein: the sludge treatment equipment further comprises a first sludge hopper, a filter press and a first sludge conveying pipe, wherein the first sludge hopper is arranged in the primary sedimentation tank, the filter press is used for carrying out filter pressing solidification on the sludge, the first sludge conveying pipe is used for conveying the sludge in the first sludge hopper to the filter press, one end of the first sludge conveying pipe is connected with the first sludge hopper, and the other end of the first sludge conveying pipe is connected with the filter press.
3. The sludge treatment apparatus as claimed in claim 2, wherein: the sludge treatment equipment further comprises a concentration sedimentation tank for settling the slurry discharged from the sedimentation device, and one end of the first liquid discharge pipe extending to the outside of the hollow shell is communicated with the concentration sedimentation tank.
4. A sludge treatment plant as claimed in claim 3, wherein: the utility model discloses a concentration sedimentation tank, including concentrated sedimentation tank, concentration sedimentation tank, first mud bucket, second mud bucket, the drain pipe that is arranged in collecting supernatant in the concentrated sedimentation tank, be used for discharging in the collecting tank, be used for with mud in the second mud bucket the second mud pipe of concentrated sedimentation tank, the one end of drain pipe with the collecting tank is linked together, the one end of second mud pipe with the second mud bucket is linked together, the other end of second mud pipe extends to the concentrated sedimentation tank is outside.
5. The sludge treatment apparatus as claimed in claim 4, wherein: the sludge treatment equipment further comprises a liquid collecting tank for containing slurry liquid separated by filter pressing of the filter press, and a second liquid discharge pipe for conveying the slurry liquid in the liquid collecting tank to the concentration sedimentation tank, wherein one end of the second liquid discharge pipe is connected to the concentration sedimentation tank, the other end of the second liquid discharge pipe is connected to the liquid collecting tank, and one end of the second slurry conveying pipe extending to the outside of the concentration sedimentation tank is connected to the filter press.
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| CN201811210400.XA CN111056722B (en) | 2018-10-17 | 2018-10-17 | Sludge treatment equipment |
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| CN201811210400.XA CN111056722B (en) | 2018-10-17 | 2018-10-17 | Sludge treatment equipment |
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| CN111056722B true CN111056722B (en) | 2024-03-19 |
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| CN111056722A (en) | 2020-04-24 |
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