CN115385539A - Sludge step-by-step separation system - Google Patents
Sludge step-by-step separation system Download PDFInfo
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- CN115385539A CN115385539A CN202210996519.4A CN202210996519A CN115385539A CN 115385539 A CN115385539 A CN 115385539A CN 202210996519 A CN202210996519 A CN 202210996519A CN 115385539 A CN115385539 A CN 115385539A
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- 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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- 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
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- 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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
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- Treatment Of Sludge (AREA)
Abstract
The invention provides a sludge step-by-step separation system, which comprises a sludge thickener, an integrated dosing device, a mixing pipeline, a sludge modulation treatment device and a low-temperature dryer, wherein the integrated dosing device is arranged on the sludge thickener; the sludge modulation treatment device comprises a modulation tank and a belt filter press, wherein the modulation tank comprises a tank body and a water filtering component arranged in the tank body, and the water filtering component is used for filtering free water and gap water in sewage, and overflowing residual sludge out of the modulation tank and entering the belt filter press; the belt filter press is internally provided with a wedge-shaped squeezing area and an S-shaped squeezing and squeezing area, the first conveyer belt, the second conveyer belt and the third conveyer belt are all composed of filter cloth, and the tail ends of the first conveyer belt, the second conveyer belt and the third conveyer belt are provided with discharging mechanisms. The sludge step-by-step separation system provided by the invention adopts the sludge thickener, the integrated dosing device, the mixing pipeline, the sludge modulation treatment device and the low-temperature dryer to perform step-by-step dehydration treatment on sewage, has a compact structure, is stable in production, has strong dehydration and treatment capabilities, and greatly improves the economic benefit.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a sludge step-by-step separation system.
Background
With the rapid development of industrial and urban construction industries, industrial wastewater and domestic sewage are increasing. In order to prevent pollution and protect the environment, sewage needs to be treated. The sludge with high liquid content is generated in the sewage treatment, the water content of the sludge is 97-99.6%, the sludge is a loose structure of granular or flocculent substances in a flowing state, the sludge is large in volume and difficult to dispose and consume, so that the sludge needs to be dehydrated in the sludge treatment, and the sludge cannot be transported and comprehensively utilized.
Sludge dewatering methods generally include sludge concentration, natural drying, mechanical dewatering, and the like. Wherein, the sludge concentration is the most economic and effective method for reducing the sludge volume, and the sludge concentration is indispensable no matter which way the sludge is finally treated. The natural drying can be divided into sand drying yard and drying plant. The former is used for dewatering the sediment in the grit chamber, and the latter is used for dewatering primary precipitated sludge, humic sludge, nitrified sludge, chemical sludge and mixed sludge. However, the nature of the sludge is different from the local meteorological conditions, and the water dehydrated by permeation, evaporation and skimming is also different, so that the actual dehydration effect is difficult to control. In addition, the sludge is naturally dried and dehydrated, the occupied area is wide, the period is long, the workload of maintenance and management is large, the sludge is decayed to generate stink in the later period, mosquitoes and flies breed, and the environmental sanitation around the sludge is greatly influenced. Mechanical dewatering is a method commonly adopted in various countries in the world at present, and common dewatering machines are as follows: vacuum filters, centrifuges, plate and frame filter presses, belt driers, etc.
A vacuum filter: the structure is not closed, harmful gas is difficult to collect, filter cloth is difficult to clean, and the energy consumption of the vacuum pump is high;
a centrifuge: the method has the advantages of high power consumption, high noise and violent vibration, and is not suitable for solid-liquid separation with approximate specific gravity.
The plate-and-frame filter press is intermittent solid-liquid separation equipment, and the efficiency is low due to intermittent operation of the plate-and-frame filter press, so that the treatment capacity of a large sewage plant cannot be met.
The belt filter press mainly utilizes the tension and the pressure of the filter cloth to apply pressure on the filter cloth to dewater the sludge, does not need vacuum or pressurizing equipment, has low power consumption and can be continuously operated.
Therefore, the existing sludge treatment equipment has the advantages of rough mechanical structure, wide occupied area (split type), and lower dehydration efficiency and treatment capacity. Therefore, those skilled in the art need to develop a sludge treatment system with compact structure, small floor space, high dewatering efficiency and good sludge treatment capacity.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of wide occupied area and low dehydration efficiency and treatment capacity in the prior art, the invention provides a sludge step-by-step separation system.
The technical scheme adopted for solving the technical problems is as follows: a sludge step-by-step separation system comprises a sludge thickener, an integrated dosing device, a mixing pipeline, a sludge modulation treatment device and a low-temperature dryer;
the sludge thickener is used for separating the water in the gaps from the sludge particles in the sewage, accelerating the sludge to descend and conveying the concentrated sludge water into the mixing pipeline through the pipeline;
the integrated dosing device is used for dosing in the solution tank to prepare a PAM medicament, and conveying the diluted PAM medicament into the mixing pipeline after the PAM medicament is diluted by clear water;
the mixing pipeline is used for mixing the diluted PAM medicament and the concentrated muddy water in the mixing pipeline and conveying the mixture to the sludge modulation treatment device;
the sludge modulation treatment device comprises a modulation tank and a belt filter press, wherein the modulation tank comprises a tank body and a water filtering component arranged in the tank body, and the water filtering component is used for filtering free water and interstitial water in sewage and overflowing residual sludge out of the modulation tank and entering the belt filter press;
a first conveying belt, a second conveying belt and a third conveying belt are arranged in the belt filter press, the first conveying belt is transversely arranged above the inside of the belt filter press, the output end of the first conveying belt is arranged above the input end of the second conveying belt, the output end of the second conveying belt is arranged above the third output end, the lower half part of the second conveying belt is gradually close to and partially overlapped with the upper half part of the third conveying belt, the mutually close parts of the lower half part of the second conveying belt and the upper half part of the third conveying belt form a wedge-shaped dehydration region, the overlapped parts of the second conveying belt and the third conveying belt are pressed by a plurality of pressing rollers to form an S-shaped pressing dehydration region, the first conveying belt, the second conveying belt and the third conveying belt are all composed of filter cloth, and the tail ends of the first conveying belt, the second conveying belt and the third conveying belt are provided with discharging mechanisms;
and the low-temperature dryer is used for condensing, dehumidifying and drying the mud cakes conveyed by the belt filter press by utilizing a dehumidifying heat pump through hot air circulation.
Further, the drainage subassembly includes stirring paddle leaf, a plurality of rotating ring and quiet ring, stirring paddle leaf vertically locate the jar internal with jar body rotates to be connected, and is a plurality of rotating ring and quiet ring interval are located the stirring paddle leaf outside is a plurality of rotating ring and quiet ring clearance fit each other, and are a plurality of quiet ring is all fixed in the jar internally, and is a plurality of rotating ring internal face and stirring paddle leaf outward flange fixed connection are a plurality of quiet ring and rotating ring and stirring paddle leaf cooperation form a pressure filtration chamber, pressure filtration chamber bottom is equipped with the shrouding, be equipped with on the shrouding with the first feed inlet of hybrid pipeline intercommunication, pressure filtration chamber top be equipped with be used for with the first discharge gate of belt filter press intercommunication.
Further, the sludge concentrator comprises a steady flow barrel, a water inlet pipe is arranged above the steady flow barrel, a main shaft is arranged at the center of the steady flow barrel, a plurality of concentrated grid bars are arranged on the side wall of the main shaft, the bottom of the steady flow barrel is of a downward conical structure, a sludge outlet is formed in the lowest position of the conical structure, a sludge screw pump is arranged at the sludge outlet, the output end of the sludge screw pump is connected with a pipeline mixer, and a first mud scraping plate matched with the conical structure is arranged at the bottom of the concentrated grid bars.
Further, integration charge device includes the solution tank, preparation groove, curing groove and holding tank have set gradually along medicament direction of delivery in the solution tank, all be equipped with the puddler in preparation groove, curing groove and the holding tank, be equipped with level sensor in the holding tank, preparation groove top is equipped with the dog-house, be connected with first clean water pipe and dry casting machine on the dog-house, be equipped with the solenoid valve on first clean water pipe and the dry casting machine, level sensor and solenoid valve signal connection, holding tank and mixed pipeline intercommunication.
Further, a dosing screw pump and an electromagnetic flowmeter are arranged between the storage tank and the mixing pipeline, a second clean water pipe is further connected to the mixing pipeline, and an electromagnetic valve and a rotor flowmeter are arranged on the second clean water pipe.
Further, a second mud scraping plate matched with the bottom of the modulation tank is arranged at the lower end of the stirring blade in the conditioning tank, and a first backflow pipe communicated with a steady flow barrel of the sludge thickener is arranged at the bottom of the modulation tank.
Further, the first conveying belt inclines from bottom to top along the sludge conveying direction.
Furthermore, a plurality of squeezing rollers in the S-shaped squeezing and dewatering area are arranged in the direction of the sludge conveying belt according to the sequence of diameters from large to small.
Furthermore, water collecting troughs are arranged below the first conveying belt, below the upper half part of the second conveying belt and below the lower half part of the third conveying belt, outlets of the water collecting troughs extend to the bottom of the belt filter press, and a second return pipe communicated with a steady flow barrel of the sludge thickener is arranged at the bottom of the belt filter press.
Further, first conveyer belt the latter half top, second conveyer belt the first half top and third conveyer belt the latter half top all are equipped with washing unit, washing unit includes the flushing pipe, the interval is provided with a plurality of nozzles on the flushing pipe, every overlap each other between the nozzle spray radius, every the nozzle spray range covers whole conveyer belt width, the flushing pipe upper shield is equipped with washes the guard shield, wash guard shield both sides limit and extend to conveyer belt side direction, wash the guard shield lateral wall be equipped with conveyer belt complex joint strip.
The beneficial effects of the invention are: the sludge step-by-step separation system provided by the invention adopts the sludge thickener, the integrated dosing device, the mixing pipeline, the sludge modulation treatment device and the low-temperature dryer to perform step-by-step dehydration treatment on sewage, has a compact structure, is stable in production, has strong dehydration and treatment capabilities, and greatly improves the economic benefit.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a sludge thickener;
FIG. 3 is a schematic structural view of an integrated drug adding device;
FIG. 4 is a schematic diagram of the configuration of the brewing canister;
FIG. 5 is an enlarged schematic view of A in FIG. 4;
figure 6 is a schematic view of the belt filter press construction;
fig. 7 is a schematic view of the structure of the flushing device.
In the figure: 1. a sludge concentrator, 1a, a steady flow barrel, 1b, a water inlet pipe, 1c, a main shaft, 1d, a concentrating grid, 1e, a sludge outlet, 1f, a sludge screw pump, 1g, a first mud scraper, 2, an integrated dosing device, 2a, a solution tank, 2b, a preparation tank, 2c, a curing tank, 2d, a storage tank, 2e, a liquid level sensor, 2f, a feeding port, 2g, a first clear water pipe, 2h, a dry injection machine, 2i, a dosing screw pump, 2j, an electromagnetic flowmeter, 2k, a second clear water pipe, 2l, a rotor flowmeter, 3, a mixing pipeline, 4 and a modulation tank, 4a, a tank body, 4b, a stirring paddle, 4c, a movable ring, 4d, a static ring, 4e, a filter pressing cavity, 4f, a sealing plate, 4g, a first feeding hole, 4h, a first discharging hole, 4i, a second mud scraper, 5, a belt filter press, 5a, a first conveying belt, 5b, a second conveying belt, 5c, a third conveying belt, 5d, a wedge-shaped dewatering area, 5e, an S-shaped squeezing dewatering area, 5f, a squeezing roller, 6, a flushing device, 6a, a flushing pipe, 6b, a nozzle, 6c, a flushing shield, 6d, a sealing rubber strip, 6e, a water collecting tank, 7 and a low-temperature dryer.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.
As shown in figures 1-7, the sludge step-by-step separation system comprises a sludge thickener 1, an integrated dosing device 2, a mixing pipeline 3, a sludge conditioning treatment device and a low-temperature dryer 7;
the sludge thickener 1 is used for separating the water in the gaps from the sludge particles in the sewage, accelerating the sludge to descend and conveying the concentrated sludge water into the mixing pipeline 3 through a pipeline;
the integrated dosing device 2 is used for dosing in the solution tank 2a to prepare a PAM medicament, and conveying the diluted PAM medicament into the mixing pipeline 3 after being diluted by clear water;
the mixing pipeline 3 is used for mixing the diluted PAM medicament and the concentrated muddy water in the mixing pipeline 3 and conveying the mixture into the sludge modulation treatment device;
the sludge modulation treatment device comprises a modulation tank 4 and a belt filter press 5, wherein the modulation tank 4 comprises a tank body 4a and a water filtering component arranged in the tank body 4a, and the water filtering component is used for filtering free water and gap water in sewage, overflowing residual sludge out of the modulation tank and entering the belt filter press 5;
a first conveying belt 5a, a second conveying belt 5b and a third conveying belt 5c are arranged in the belt filter press 5, the first conveying belt 5a is transversely arranged above the inside of the belt filter press 5, the output end of the first conveying belt 5a is arranged above the input end of the second conveying belt 5b, the output end of the second conveying belt 5b is arranged above the third output end, the lower half part of the second conveying belt 5b and the upper half part of the third conveying belt 5c are gradually close to each other and are partially overlapped, mutually close parts of the lower half part of the second conveying belt 5b and the upper half part of the third conveying belt 5c form a wedge-shaped dewatering area 5d, the overlapped part of the second conveying belt 5b and the third conveying belt 5c is pressed by a plurality of pressing rollers 5f to form an S-shaped pressing dewatering area 5e, the first conveying belt 5a, the second conveying belt 5b and the third conveying belt 5c are all composed of filter cloth, the tail ends of the first conveying belt 5a, the second conveying belt 5b and the third conveying belt 5c are provided with discharging mechanisms, and the scraper mechanisms are matched with the conveying belts;
and the low-temperature dryer 7 is used for condensing, dehumidifying and drying the mud cakes conveyed by the belt filter press 5 by a dehumidifying heat pump through hot air circulation.
The water filtering component comprises a stirring paddle blade 4b, a plurality of movable rings 4c and a static ring 4d, the stirring paddle blade 4b is vertically arranged in the tank body 4a and is connected with the tank body 4a in a rotating mode, the movable rings 4c and the static rings 4d are arranged at intervals, the outer side of the stirring paddle blade 4b is multiple, the movable rings 4c and the static rings 4d are in clearance fit with each other, the static rings 4d are fixed in the tank body 4a, the inner wall face of each movable ring 4c is fixedly connected with the outer edge of the stirring paddle blade 4b, the static rings 4d and the movable rings 4c are matched with the stirring paddle blade 4b to form a pressure filtering cavity 4e, a sealing plate 4f is arranged at the bottom of the pressure filtering cavity 4e, a first feed inlet 4g communicated with the mixing pipeline 3 is arranged on the sealing plate 4f, and a first discharge outlet 4h communicated with the belt type pressure filter 5 is arranged at the top end of the pressure filtering cavity 4 e.
Integration charge device 2 includes solution tank 2a, preparation groove 2b, curing groove 2c and holding tank 2d have set gradually along medicament direction of delivery in solution tank 2a, all be equipped with the puddler in preparation groove 2b, curing groove 2c and the holding tank 2d, be equipped with level sensor 2e in the holding tank 2d, preparation groove 2b top is equipped with dog-house 2f, be connected with first clean water pipe 2g and throw machine 2h futilely on the dog-house 2f, be equipped with the solenoid valve on first clean water pipe 2g and the throw machine 2h futilely, level sensor 2e and solenoid valve signal connection, holding tank 2d and mixed pipeline 3 intercommunication.
A dosing screw pump 2i and an electromagnetic flowmeter 2j are arranged between the storage tank 2d and the mixing pipeline 3, a second clean water pipe 2k is further connected to the mixing pipeline 3, and an electromagnetic valve and a rotor flowmeter 2l are arranged on the second clean water pipe 2 k.
The lower end of a stirring paddle blade 4b in the conditioning tank is provided with a second mud scraper 4i matched with the bottom of the modulation tank 4, and the bottom of the modulation tank 4 is provided with a first return pipe communicated with a steady flow barrel 1a of the sludge thickener 1.
The first conveying belt 5a is inclined from bottom to top along the sludge conveying direction.
The multiple squeezing rollers 5f in the S-shaped squeezing and dewatering area 5e are arranged in the direction of the sludge conveying belt in the order of the diameters from large to small.
And water collecting tanks 6e are arranged below the first conveying belt 5a, below the upper half part of the second conveying belt 5b and below the lower half part of the third conveying belt 5c, outlets of the water collecting tanks 6e extend to the bottom of the belt filter press 5, and a second return pipe communicated with the steady flow barrel 1a of the sludge concentrator 1 is arranged at the bottom of the belt filter press 5.
All be equipped with washing unit 6 above first conveyer belt 5a the latter half, second conveyer belt 5b the first half top and third conveyer belt 5c the latter half, washing unit 6 includes flushing pipe 6a, flushing pipe 6a goes up the interval and is provided with a plurality of nozzles 6b, every overlap each other between the nozzle 6b spray radius, every nozzle 6b spray regime covers whole conveyer belt width, flushing pipe 6a upper shield is equipped with washes guard shield 6c, wash guard shield 6c both sides limit and extend to conveyer belt side direction, wash guard shield 6c lateral wall be equipped with conveyer belt complex joint strip 6d.
The working process is as follows:
sewage enters the flow stabilizing barrel 1a through the water inlet pipe 1b of the sludge thickener 1, the motor drives the central main shaft 1c to rotate clockwise, and the main shaft 1c drives the thickening grid bars 1d to rotate, so that gap water and sludge particles are separated, and the sludge is accelerated to descend. The first mud scraper 1g at the bottom of the main shaft 1c scrapes sludge at the bottom of the flow stabilizing barrel 1a into the sludge outlet 1e, and the sludge is discharged through the sludge screw pump 1 f.
The preparation of the medicament by the integrated medicament adding device 2 is completed by gradually processing a preparation groove 2b, a curing groove 2c and a storage groove 2d in the solution tank 2 a. The preparation tank 2b, the curing tank 2c and the storage tank 2d are separated from each other, so that short flow is avoided in the production process of the medicament. The control box of the integrated dosing device 2 is connected with a liquid level meter on the storage tank, once the liquid level reaches a low level, an electromagnetic valve on the first clear water pipe 2g is triggered to be opened, and meanwhile, the electromagnetic valve on the dry dosing machine 2h is started to start dosing; once the liquid level meter reaches the high level, the electromagnetic valve stops, and the dry dosing machine also stops dispensing for 2 hours; when the liquid level meter reaches 'ultra-low', the dosing screw pump 2i stops, and the stirrer always works in the preparation and medicament use processes.
After the PAM medicament is prepared, proportionally diluting the PAM medicament with clear water according to the process requirement; the diluted medicament and the concentrated sludge discharged by the sludge screw pump 1f are pretreated by a mixing pipeline 3 and then enter a tempering tank for treatment. Under the holding of the medicament, the sludge in the sewage is flocculated and agglomerated into an alum blossom shape, meanwhile, free water and gap water are filtered out from gaps between the movable and static rings 4d in the water filtering component, and the rest sludge overflows to the first discharge hole 4h of the tempering tank.
Because the first discharge gate 4h of quenching and tempering jar directly links to each other with the import of totally closed belt filter press 5 with the flange, the mud after the preconcentration is followed the trend and is got into totally closed belt filter press 5, is transported evenly mud through first conveyer belt 5a, has longer small-angle ascending motion in this section, under the action of gravity, free water and wadding group secondary separation, most free water in the desorption material. The material basically loses fluidity and is scraped onto the second conveying belt 5b through the scraper, and the second conveying belt 5b conveys the material to the wedge-shaped dewatering area 5d. The materials enter the wedge-shaped dewatering area 5d, the filtered pulp in the wedge-shaped area is further flat and uniform and is slightly extruded by the second conveying belt 5b and the third conveying belt 5c, the wedge-shaped space formed by the second conveying belt 5b and the third conveying belt 5c is reduced from large to small, and finally the second conveying belt 5b and the third conveying belt 5c are folded, so that the extrusion force applied to the filtered pulp clamped between the two conveying belts is gradually increased, the moisture is continuously discharged from the filtered pulp, and the slurry completely loses fluidity at the moment, so that the preparation is made for the next step of entering the squeezing dewatering area.
The squeezing rollers 5f of the squeezing and dewatering area are arranged in the order from large diameter to small diameter, the squeezing force applied to the materials is gradually increased from small diameter, most intercellular water is removed after the filter cake is squeezed, dislocated and sheared by the plurality of S-row arranged squeezing rollers 5f, and the filter pressing and dewatering are completed. When the filter belt passes the discharge mechanism, the mud cake is scraped off the third conveyor belt 5c by the scraper.
The first conveyor belt 5a, the second conveyor belt 5b and the third conveyor belt 5c are washed and regenerated, and then return to the initial position again, so that the circulation of sludge dewatering is completed. Wherein the first conveyor belt 5a, the second conveyor belt 5b and the third conveyor belt 5c are provided with flushing devices 6, each flushing device 6 consisting of a flushing pipe 6a, a nozzle 6b, a flushing shield 6c, a rubber sealing strip. The nozzles 6b are orderly arranged, the spraying range covers the whole width of the filter belt, the spraying radiuses of the nozzles 6b are mutually overlapped, and the nozzles 6b are connected with the water inlet pipe 1b by pipe threads, so that the replacement is convenient; the periphery of the washing shield 6c contacting with the conveying belt is provided with sealing rubber to prevent washing water from splashing and wetting mud cakes. The water collecting tank 6e arranged on the first conveyor belt 5a, the second conveyor belt 5b and the third conveyor belt 5c is used for collecting free water and intercellular water for sludge concentration and filter pressing, and the other invention is used for collecting filter belt washing water and residual sludge.
The sludge cake (with the water content of 72-75%) dehydrated by the pre-concentration totally-closed belt filter press 5 is conveyed to a sludge low-temperature drier by a shaftless screw conveyor. The dried mud cake (with the water content of 25-40%) is placed in a sludge hopper and transported to an incineration plant by a vehicle for treatment.
Directions and references (e.g., up, down, left, right, etc.) may be used in the present disclosure only to aid in the description of features in the figures. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
In light of the foregoing description of preferred embodiments in accordance with the invention, it is intended that the appended claims be interpreted as including all such alterations and modifications as fall within the true spirit and scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a mud piece-rate system step by step which characterized in that: comprises a sludge thickener (1), an integrated dosing device (2), a mixing pipeline (3), a sludge modulation processing device and a low-temperature dryer (7);
the sludge thickener (1) is used for separating the water in the gaps from the sludge particles in the sewage, accelerating the sludge to descend and conveying the concentrated sludge water into the mixing pipeline (3) through a pipeline;
the integrated dosing device (2) is used for dosing in the solution tank (2 a) to prepare a PAM medicament, diluting the PAM medicament with clear water and conveying the diluted PAM medicament into the mixing pipeline (3);
a mixing pipeline (3) for mixing the diluted PAM agent and the concentrated muddy water in the mixing pipeline (3) and conveying the mixture to a sludge preparation treatment device;
the sludge modulation treatment device comprises a modulation tank (4) and a belt filter press (5), wherein the modulation tank (4) comprises a tank body (4 a) and a water filtering component arranged in the tank body (4 a), and the water filtering component is used for filtering free water and gap water in sewage, overflowing residual sludge out of the modulation tank into the belt filter press (5);
a first conveying belt (5 a), a second conveying belt (5 b) and a third conveying belt (5 c) are arranged in the belt filter press (5), the first conveying belt (5 a) is transversely arranged above the inside of the belt filter press (5), the output end of the first conveying belt (5 a) is arranged above the input end of the second conveying belt (5 b), the output end of the second conveying belt (5 b) is arranged above the third output end, the lower half part of the second conveying belt (5 b) and the upper half part of the third conveying belt (5 c) are gradually close to each other and partially overlapped, the mutually close parts of the lower half part of the second conveying belt (5 b) and the upper half part of the third conveying belt (5 c) form a wedge-shaped dewatering area (5 d), the overlapped part of the second conveying belt (5 b) and the third conveying belt (5 c) is pressed by a plurality of squeezing rollers (5 f) to form an S-shaped squeezing dewatering area (5 e), the first conveying belt (5 a), the second conveying belt (5 b) and the third conveying belt (5 c) are all formed by a plurality of squeezing rollers (5 f), and the tail ends of the first conveying belt (5 a) and the second conveying belt (5 b) and the third conveying belt (5 c) are provided with a discharging mechanism;
and the low-temperature dryer (7) is used for condensing, dehumidifying and drying the mud cakes conveyed out of the belt filter press (5) by utilizing a dehumidifying heat pump through hot air circulation.
2. The system for separating sludge in a stepwise manner according to claim 1, wherein: the water filtering component comprises a stirring paddle blade (4 b), a plurality of moving rings (4 c) and a plurality of static rings (4 d), the stirring paddle blade (4 b) is vertically arranged in the tank body (4 a) and is rotationally connected with the tank body (4 a), the moving rings (4 c) and the static rings (4 d) are arranged at intervals in the outer side of the stirring paddle blade (4 b), the moving rings (4 c) and the static rings (4 d) are in clearance fit with each other, the static rings (4 d) are fixed in the tank body (4 a), the inner wall surface of the moving rings (4 c) is fixedly connected with the outer edge of the stirring paddle blade (4 b), the static rings (4 d) and the moving rings (4 c) are matched with the stirring paddle blade (4 b) to form a pressure filtering cavity (4 e), a sealing plate (4 f) is arranged at the bottom of the pressure filtering cavity (4 e), and a first feed inlet (4 g) communicated with a mixing pipeline (3) is arranged on the sealing plate (4 f), and a top end of the pressure filtering cavity (4 e) is used for communicating with a first discharge hole (5 h).
3. The system for separating sludge in a stepwise manner according to claim 1, wherein: sludge thickening machine (1) is including stationary flow bucket (1 a), stationary flow bucket (1 a) top is equipped with inlet tube (1 b), stationary flow bucket (1 a) center is equipped with main shaft (1 c), be equipped with a plurality of concentrated grid (1 d) on main shaft (1 c) lateral wall, stationary flow bucket (1 a) bottom is the toper structure of downward setting, the lower of toper structure is equipped with mud outlet (1 e), mud outlet (1 e) department is equipped with mud screw pump (1 f), the output and the pipe-mixer of mud screw pump (1 f) are connected, concentrated grid (1 d) bottom be equipped with first mud scraping plate (1 g) of toper structure complex.
4. The system for separating sludge in a stepwise manner according to claim 3, wherein: integration charge device (2) include solution tank (2 a), preparation groove (2 b), ripening groove (2 c) and holding tank (2 d) have set gradually along medicament direction of delivery in solution tank (2 a), all be equipped with the puddler in preparation groove (2 b), ripening groove (2 c) and holding tank (2 d), be equipped with level sensor (2 e) in holding tank (2 d), preparation groove (2 b) top is equipped with dog-house (2 f), be connected with first clear water pipe (2 g) and dry casting machine (2 h) on dog-house (2 f), be equipped with the solenoid valve on first clear water pipe (2 g) and dry casting machine (2 h), level sensor (2 e) and solenoid valve signal connection, holding tank (2 d) and mixed pipeline (3) intercommunication.
5. The system for separating sludge in a stepwise manner according to claim 4, wherein: a dosing screw pump (2 i) and an electromagnetic flowmeter (2 j) are arranged between the storage tank (2 d) and the mixing pipeline (3), a second clear water pipe (2 k) is further connected to the mixing pipeline (3), and an electromagnetic valve and a rotor flowmeter (2 l) are arranged on the second clear water pipe (2 k).
6. The system for separating sludge in a stepwise manner according to claim 1, wherein: the lower end of a stirring paddle (4 b) in the conditioning tank is provided with a second mud scraper (4 i) matched with the bottom of the conditioning tank (4), and the bottom of the conditioning tank (4) is provided with a first return pipe communicated with a steady flow barrel (1 a) of the sludge thickener (1).
7. The system for separating sludge in a stepwise manner according to claim 1, wherein: the first conveying belt (5 a) is inclined from bottom to top along the sludge conveying direction.
8. The system for separating sludge in a stepwise manner according to claim 1, wherein: the multiple squeezing rollers (5 f) in the S-shaped squeezing and dewatering area (5 e) are arranged in the direction of the sludge conveying belt in the order of the diameters from large to small.
9. The system for separating sludge in a stepwise manner according to claim 1, wherein: and water collecting troughs (6 e) are arranged below the first conveying belt (5 a), below the upper half part of the second conveying belt (5 b) and below the lower half part of the third conveying belt (5 c), an outlet of each water collecting trough (6 e) extends to the bottom of the belt filter press (5), and a second return pipe communicated with the flow stabilizing barrel (1 a) of the sludge concentrator (1) is arranged at the bottom of the belt filter press (5).
10. The system for separating sludge in a stepwise manner according to claim 9, wherein: first conveyer belt (5 a) the latter half top, second conveyer belt (5 b) the first half top and third conveyer belt (5 c) the latter half top all are equipped with washing unit (6), washing unit (6) include flushing pipe (6 a), the interval is provided with a plurality of nozzles (6 b) on flushing pipe (6 a), every overlap each other between nozzle (6 b) the spray radius, every nozzle (6 b) spray range covers whole conveyer belt width, flushing pipe (6 a) upper shield is equipped with washes guard shield (6 c), it extends to conveyer belt side direction to wash guard shield (6 c) both sides limit, wash guard shield (6 c) lateral wall be equipped with conveyer belt complex joint strip (6 d).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210996519.4A CN115385539B (en) | 2022-08-19 | 2022-08-19 | Sludge step-by-step separation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210996519.4A CN115385539B (en) | 2022-08-19 | 2022-08-19 | Sludge step-by-step separation system |
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| CN115385539A true CN115385539A (en) | 2022-11-25 |
| CN115385539B CN115385539B (en) | 2023-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115745351A (en) * | 2022-12-14 | 2023-03-07 | 江苏耶格尔环保工程有限公司 | Sludge press filtration dewatering system |
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| KR20010055004A (en) * | 1999-12-09 | 2001-07-02 | 이구택 | Apparatus for removing sludge by floating of sludge in a settling tank |
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| CN115745351A (en) * | 2022-12-14 | 2023-03-07 | 江苏耶格尔环保工程有限公司 | Sludge press filtration dewatering system |
| CN115745351B (en) * | 2022-12-14 | 2023-08-22 | 江苏耶格尔环保工程有限公司 | Sludge press filtration dewatering system |
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|---|---|
| CN115385539B (en) | 2023-07-25 |
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