CN105461189A - Combined sludge deep dehydration system and deep dehydration technique - Google Patents
Combined sludge deep dehydration system and deep dehydration technique Download PDFInfo
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- CN105461189A CN105461189A CN201511003635.8A CN201511003635A CN105461189A CN 105461189 A CN105461189 A CN 105461189A CN 201511003635 A CN201511003635 A CN 201511003635A CN 105461189 A CN105461189 A CN 105461189A
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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
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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
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Abstract
The invention provides a combined sludge deep dehydration system and deep dehydration technique. The dehydration system comprises a sludge feed unit, a sludge conditioning modification unit and a pressure filtration dehydration unit, wherein the sludge feed unit comprises a sludge dilution homogenization tank and a sludge mixing delivery assembly; the sludge dilution homogenization tank is connected with the sludge conditioning modification unit through the sludge mixing delivery assembly; and the sludge conditioning modification unit is connected with the pressure filtration dehydration unit. The deep dehydration technique comprises the following steps: (1) treating sludge by the sludge feed unit to obtain the sludge of which the water content is within a certain range; (2) sending the sludge obtained in the step (1) to the sludge conditioning modification unit, and adding a conditioner to perform conditioning; and (3) sending the sludge obtained in the step (2) to the pressure filtration dehydration unit to perform treatment. By optimizing the design, the whole technique has high adaptability, and can flexibly regulate the operation group number and time of the system according to the actual sludge feed quantity and water content condition, thereby ensuring the stable operation of the system.
Description
Technical field
The present invention relates to deeply dehydrating sludge field, particularly relate to a kind of built-up type deep dehydration system for sludge and technique.
Background technology
Sewage work mainly contains primary deposition mud, residual active sludge and chemical sludge.The water ratio of mud is general all very high, and primary sedimentation pond moisture percentage in sewage sludge is between 95% ~ 97%, and residual active sludge is more than 99.2%, and the water ratio of chemical sludge reaches more than 99.5%.The residual active sludge that sewage work produces generally will account for more than 80% of mud ultimate production.Active sludge forms primarily of four parts: the living microorganism colony with metabolic function; The residue of microorganism endogenous respiration and autoxidation; By the hardly degraded organic substance that mud flco adsorbs; By the inorganics that mud flco adsorbs.Residual active sludge is main component with organism, has that easily corruption is smelly, particle is comparatively thin, proportion is less, water ratio is high and the characteristic of not easily dewatering, and is the hydroaropic substance of jelly structure.In mud, moisture content is roughly divided into 4 classes: void among particles water, accounts for 70% of total moisture; Capillary water, the water namely between particle in kapillary, accounts for 20%; Mud granule planar water and granule interior water, account for 10%.
The method of sludge condensation mainly contains gravity concentration, centrifugal concentrating and floatation thickening.Gravity concentration tank, according to the difference of operation scheme, can be divided into continous way gravity concentration tank and intermittent type gravity concentration tank two kinds, is divided into again vertical-flow and width streaming two kinds by its water flow mode.Continous way gravity concentration tank mainly contains band mud scraper and stirs continous way gravity concentration tank and the multibuchet continous way gravity concentration tank two kinds of grid; Batch-type sludge concentration basin mainly contains band pipe core and is not with pipe core two kinds.Mechanical thickening is the difference in specific gravity utilizing solid particulate in mud and liquid, the difference of the centrifugal force suffered by centrifuge field and being separated.Whizzer for centrifugal concentrating mainly contains disk centrifuge and drum centrifuge etc.Floatation Thickening Sludge is first under pressurized condition, is then attached to around mud granule by a large amount of microbubbles discharged that reduce pressure, mud granule is floated, thus reaches concentrated object.
The dehydration of mud refer to by fluidised form mud (through or without concentrated) be converted into solid-state wet mud.The method of sludge dewatering mainly contains natural-dehydration, mechanical dehydration and granulation dehydration.Natural-dehydration main units is sludge drying bed, blends the water content that evaporation reduces mud under main dependence.Mechanical dehydration method is divided into again filtration method and centrifuging two kinds.Filtration method is filtered by wet mud filtering layer (porous material is as filter cloth, wire cloth), and make moisture (filtrate) infiltrate filtering layer, dewatered sludge (filter cake) is then trapped within filtering layer.Centrifuging borrows the different tendency to drift aways that in mud, solid, liquid difference in specific gravity produces to reach mud-water separation.The equipment of filtration method has vacuum-type drum filter, plate-and-frame filter press and band filter.The water ratio of mechanical dehydration mud is relevant with sludge quality and pretreatment process.
Typical sludge treatment technique flow process, comprises four-stage: the first stage is sludge condensation, and main purpose makes mud tentatively subtract appearance, reduces volume or the plant capacity of subsequent disposal structures; Subordinate phase is sludge digestion, makes the organic substance decomposing in mud; Phase III is sludge dewatering, makes mud subtract appearance further; Fourth stage is sludge disposal, adopts certain approach to be dissolved by final mud.Sludge of sewage treatment plant, by the process of above four-stage, reaches the object of minimizing, stabilization, innoxious, resource utilization.
Current dewatering technology of mud is in the process of process residual active sludge, and the moisture content of the cake mainly deposited after dewatering is high, and mud cake yields poorly, and chemical feeding quantity is large, the problems such as filter cloth does not wash clean clearly, and parting liquid solid content is high, and solid recovery rate is low.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, a kind of built-up type deep dehydration system for sludge and Deep dehydration technique are provided, this dewatering system comprises sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit, sewage sludge feed unit comprises mud dilution homogeneous pond and mud blending transportation assembly, mud dilution homogeneous pond is connected with sludge conditioning modification unit by mud blending transportation assembly, and sludge conditioning modification unit is connected with filter-press dehydration unit; This Deep dehydration technique comprises the following steps: (1) mud, through sewage sludge feed cell processing, obtains water ratio mud within the specific limits; (2) mud that step (1) obtains is delivered to sludge conditioning modification unit, add amendment and nurse one's health; (3) mud that step (2) obtains is delivered to filter-press dehydration cell processing.The present invention, by optimization design, makes whole technique have stronger adaptability, can according to actual feed sludge amount and water ratio situation, the operation group number of flexible adjustment System and time, ensures system stable operation.
The present invention is achieved by the following technical solutions:
First aspect present invention provides a kind of built-up type deep dehydration system for sludge, comprise sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit, described sewage sludge feed unit comprises mud dilution homogeneous pond and mud blending transportation assembly, described mud dilution homogeneous pond is connected with described sludge conditioning modification unit by mud blending transportation assembly, and described sludge conditioning modification unit is connected with described filter-press dehydration unit.
Preferably, described sewage sludge feed unit also comprises mud homogeneous pond, lift pump and mechanical thickener, described mud homogeneous pond is connected with described mechanical thickener by lift pump, described mud homogeneous pond is also diluted homogeneous pond with described mud and is connected, and described mechanical thickener is connected with described sludge conditioning modification unit.
Preferably, described sewage sludge feed unit also comprises mud homogeneous pond, and described mud homogeneous pond is diluted homogeneous pond with described mud and is connected.
Preferably, also to comprise any one of following characteristics or multinomial:
(1) opening for feed in mud dilution homogeneous pond is provided with 45 ~ 60 ° of slopes;
(2) opening for feed in mud dilution homogeneous pond is provided with graticule mesh;
(3) opening for feed in mud dilution homogeneous pond is provided with hydraulic pressure Cang Gai;
(4) described mud dilution homogeneous pond is buried, top, pond 0.3 ~ 0.5m above ground level.
Preferably, described sewage sludge feed unit also comprises the dosing assembly to described mechanical thickener dosing.
Preferably, two lattice are divided in mud mud dilution homogeneous pond.Preferred, single lattice basin's effective volume meets the feed needs of 1 ~ 2 batch that successive batch runs.
Preferably, described sludge conditioning modification unit comprises sludge conditioning pond, amendment memory module and amendment and adds assembly, and described modifier memory module adds assembly with described amendment and is connected.
Preferred, also to comprise any one of following characteristics or multinomial:
(1) described amendment memory module comprises lime bin and polymerize aluminum chloride storage pond, described amendment adds assembly and comprises Lime-Injecting assembly and polymerize aluminum chloride adds assembly, described lime bin is connected with described Lime-Injecting assembly, and described polymerize aluminum chloride storage pond adds assembly with described polymerize aluminum chloride and is connected;
(2) described sludge conditioning modification unit also comprises crusher;
(3) described sludge conditioning pond is provided with mix and blend assembly.
Preferred further, described sludge conditioning modification unit multilayer is vertically provided with lime and polymerize aluminum chloride adds assembly, crusher and mix and blend assembly.
Preferably, described filter-press dehydration unit comprises sewage sludge feed pump, pressure filter and hydraulic pressure storage bucket, the opening for feed of sewage sludge feed pump exports with sludge conditioning pond and is connected, and the discharge port of sewage sludge feed pump is connected with described pressure filter, and described hydraulic pressure storage bucket is connected with the outlet of described pressure filter.
Preferred, described sewage sludge feed pump is spiral pump.
Preferred, described filter-press dehydration unit is also provided with diaphragm assembly and press unit.Described diaphragm assembly is arranged between the filter plate of pressure filter and filter cloth, and described press unit is connected with described pressure filter.Described press unit comprises squeezing water pump, wash cloth pump and air compression system.
Preferably, described built-up type deep dehydration system for sludge also comprises biological deodorizing unit, and sewage sludge feed unit, sludge conditioning modification unit are connected with described biological deodorizing unit with the pneumatic outlet of filter-press dehydration unit.
Preferably, described built-up type deep dehydration system for sludge also comprises the PLC control system of sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit.
Second aspect present invention provides a kind of built-up type Deep dehydration technique, adopts the built-up type deep dehydration system for sludge described in above-mentioned any one to dewater, comprises the following steps:
(1) mud is through sewage sludge feed cell processing, obtains water ratio mud within the specific limits;
(2) mud that step (1) obtains is delivered to sludge conditioning modification unit, add amendment and nurse one's health;
(3) mud that step (2) obtains is delivered to filter-press dehydration cell processing.
Preferably, in step (1), the mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by mud blending transportation assembly, obtaining the mud of water ratio 90 ~ 95%, diluting by adding the mud of water to water ratio 78 ~ 82%.
Preferably, in step (1), the mud of water ratio 98.8 ~ 99.2% is delivered to mechanical thickener through mud homogeneous pond process rear portion by lift pump and is concentrated, obtain the mud of water ratio 93 ~ 97%, another part delivers to mud dilution homogeneous pond, dilutes the mud of water ratio 78 ~ 82%; The mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by mud blending transportation assembly, obtains the mud of water ratio 90 ~ 95%.
Preferably, in step (1), the mud of water ratio 98.8 ~ 99.2% delivers to mud dilution homogeneous pond after the process of mud homogeneous pond, dilutes the mud of water ratio 78 ~ 82%; The mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by mud blending transportation assembly, obtains the mud of water ratio 90 ~ 95%.
Preferably, by dosing assembly to described mechanical thickener dosing, the component of dosing is coagulating agent, preferred, and the addition of coagulating agent is 0.2 ~ 2 ‰ of mud dry weight.
Preferably, also to comprise any one of following characteristics or multinomial:
(1) described amendment comprises lime and polymer alumina;
(2) described Deep dehydration technique also comprises the gas of sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit generation through biological deodorizing cell processing.
Preferred, in described (1) item, the addition of described lime is 20 ~ 30% of mud dry weight, preferred further, and in described lime, CaO content is 65 ~ 75wt%; The form of described polymerize aluminum chloride is pulvis or liquid state, and the addition of pulvis polymerize aluminum chloride is 5 ~ 15% of mud dry weight, preferred further, Al in described pulvis polymerize aluminum chloride
2o
3content is 28 ~ 30wt%, and the addition of liquid polymerization aluminum chloride is 25 ~ 30% of mud dry weight, preferred further, Al in liquid polymerization aluminum chloride
2o
3content is 9 ~ 11wt%.
Preferably, in step (2), the mud that step (1) obtains is delivered to multilayer and is vertically provided with the sludge conditioning modification unit that lime and polymerize aluminum chloride add assembly, crusher and mix and blend assembly, add amendment carry out nursing one's health, broken and homogeneous.Preferred, the mud granule granularity <5mm after fragmentation.
Built-up type deep dehydration system for sludge of the present invention and Deep dehydration technique, at least have one of following beneficial effect:
(1) by optimization design, whole technical process is made to have stronger adaptability, can according to the feed sludge amount of reality and water ratio situation, the operation group number of flexible adjustment System and time, ensure system stable operation;
(2) discharging of water ratio 78 ~ 82% mud, storage, conveying flow process is optimized; Sewage sludge feed, dilution, homogeneous and memory function are taken into account in mud dilution homogeneous pond simultaneously;
(3) water ratio 98.8 ~ 99.2% mud is delivered to mechanical thickener and is concentrated after the process of mud homogeneous pond, the sludge quantity entering conditioning modification unit is greatly reduced, have employed mechanical thickener, equipment be ripe, simple and convenient management, processing power is large, can operate continuously;
(4) add lime and polymerize aluminum chloride carries out conditioning modification, improve the dewatering of mud;
(5) sludge conditioning modification unit collection adding of agent, hybrid reaction, fragmentation, homogeneous and store multi-functional, carries out fragmentation to the modified sewage sludge of abundant hybrid reaction, controls the grain graininess <5mm of mud, uniform properties; Take into account the memory function of modified sewage sludge;
(6) sludge conditioning modification unit multilayer is vertically arranged, steel systeming equipment and skeleton construction organically combine, and reduces floor space, and utilizes equipment to carry staircase and service platform, build unimpeded inspection channel;
(7) take into account the systematize high pressure filter-press dehydration unit of mud conveying charging, diaphragm pressing: mud conveying charging can adopt spiral pump, avoid granule sludge fragmentation to disintegrate, be beneficial to filter-press dehydration; Adopt size pump to switch, what can adjust pressure filter according to sludge pressing situation enters mud amount in good time simultaneously; Pressure filter integrate automatic hydraulic compression, automatic compensation, variable-frequency motor control get the functions such as pulling plate unloading, middle charging, undercurrent fluid, automatic high pressure diaphragm pressing, the automatic open and close of turnover panel, automatic high pressure filtration fabric washing, automatically can run according to entering mud amount size; Sewage sludge feed pump and high-pressure pressure filter, diaphragm pressing system pass through indispensable instrument interlocked control, and high pressure filter-press dehydration unit forms systematized operating mechanism;
(8) based on the visual operation infosystem of production process: sewage sludge feed unit, conditioning modification unit, high pressure filter-press dehydration unit all adopt PLC automatic routine to control separately, periodic reverse works, interlocking can be realized between each unit run simultaneously, substantially realize the automatization of production control; Each unit operating parameter by trial run debugging input control system, and is monitored in real time, substantially realizes the informationization of production management; The major equipment of each unit is all remote controlled, by upper computer dynamic simulation, substantially realizes the visual of production process; Except dosing and sanitation and hygiene need a small amount of artificial except, production run process is computer program and controls, and substantially realizes the unmanned of production scene.
Accompanying drawing explanation
Fig. 1 is built-up type deep dehydration system for sludge and the dehydration process figure of embodiment 1;
Fig. 2 is built-up type deep dehydration system for sludge and the dehydration process figure of embodiment 2;
Fig. 3 is built-up type deep dehydration system for sludge and the dehydration process figure of embodiment 3;
Fig. 4 is the schematic diagram in mud dilution homogeneous pond.
Accompanying drawing illustrates:
1-slope; 2-graticule mesh; 3-hydraulic pressure Cang Gai; H-pushes up in pond overhead height, 0.3 ~ 0.5m.
Embodiment
Below by way of specific specific examples, technical scheme of the present invention is described.Should be understood that one or more method stepss that the present invention mentions do not repel and before and after described combination step, also to there is additive method step or can also insert additive method step between these steps clearly mentioned; Should also be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.And, except as otherwise noted, the numbering of various method steps is only the convenient tool differentiating various method steps, but not be ordering or the enforceable scope of restriction the present invention of restriction various method steps, the change of its relativeness or adjustment, when changing technology contents without essence, when being also considered as the enforceable category of the present invention.
When embodiment provides numerical range, should be understood that except non-invention is otherwise noted, between two end points of each numerical range and two end points, any one numerical value all can be selected.Unless otherwise defined, the same meaning that all technology used in the present invention and scientific terminology and those skilled in the art of the present technique understand usually.Except the concrete grammar used in embodiment, equipment, material, according to those skilled in the art to the grasp of prior art and record of the present invention, any method of prior art that is similar with the method described in the embodiment of the present invention, equipment, material or that be equal to, equipment and material can also be used to realize the present invention.
Below in conjunction with accompanying drawing and concrete case study on implementation, the invention will be further described.
Embodiment 1
Certain city's specific resistance to filtration recycling project, treatment scale is 200t/d (water ratio 78 ~ 82%), as shown in Figure 1 and Figure 4, a kind of built-up type deep dehydration system for sludge, comprise sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit, described sewage sludge feed unit comprises mud dilution homogeneous pond and mud blending transportation assembly, described mud dilution homogeneous pond is connected with described sludge conditioning modification unit by mud blending transportation assembly, and described sludge conditioning modification unit is connected with described filter-press dehydration unit.Described mud dilution homogeneous pond opening for feed is provided with 45 ~ 60 ° of slopes 1, graticule mesh 2 and hydraulic pressure storehouse lid 3, and described mud dilution homogeneous pond is buried, and it is 0.3 ~ 0.5m that overhead height h is pushed up in pond.
Specifically details are as follows for the Deep dehydration technique of this built-up type deep dehydration system for sludge:
(1) mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by opening for feed, and adds water and carry out diluting the mud obtaining water ratio 90 ~ 95%: design scale 200t/d (water ratio 78 ~ 82%); The splicing time: receive the fortune system activity duration according to mud and determine, designing by 24h; Receive fortune vehicle: by 5T ~ 25T sludge dump truck consider, every day 10 ~ 25 mud cars;
(2) mud that step (1) obtains is delivered to sludge conditioning modification unit by mud blending transportation assembly, add amendment to nurse one's health: sludge conditioning modification unit comprises sludge conditioning pond, lime bin, Lime-Injecting assembly, polymerize aluminum chloride storage pond, polymerize aluminum chloride adds assembly, crusher and mix and blend assembly, described lime bin is connected with described Lime-Injecting assembly, described polymerize aluminum chloride storage pond adds assembly with described polymerize aluminum chloride and is connected, sludge conditioning modification unit multilayer is vertically provided with lime and polymerize aluminum chloride adds assembly, crusher and mix and blend assembly.Amendment adopts two kinds of amendments, amendment 1----coagulant aids, and the addition of lime is 20% of mud dry weight; Amendment 2----coagulating agent, the addition of pulvis polymerize aluminum chloride be 10% of mud dry weight or the addition of liquid polymerization aluminum chloride be 28% of mud dry weight.Configuration 2 cover mix and blend assembly and crusher.Every cover system adopts cycle operation mode, and the cycle of operation is 20min, and each cycle processing power is 7m
3(7.5t, water ratio 90 ~ 95%).Each treatment cycle working process comprises: sewage sludge feed (8min, 3.5t water ratio 78 ~ 82%), add coagulating agent (3min), add coagulant aids (5min), discharging and fragmentation (2min);
(3) mud that step (2) obtains is delivered to filter-press dehydration cell processing: filter-press dehydration unit comprises sewage sludge feed pump, pressure filter, hydraulic pressure storage bucket, diaphragm assembly and press unit, diaphragm assembly is arranged between the filter plate of pressure filter and filter cloth, press unit is connected with pressure filter: treatment scale 200t/d (water ratio 78 ~ 82%), not containing conditioning dosage; The over dry sludge quantity of process every day: 50t/d; Feed sludge water ratio: 90 ~ 95%; Discharging moisture percentage in sewage sludge :≤55%; Pressure filter working hour every day: 22h/d; The pressure filter work period: 3h, charging 90 ~ 120min, squeezing time 30 ~ 40min, discharging time 20min; Pressure filter washing time and the frequency: 80min, 1 times/day; The over dry sludge quantity of pressure filter unit process: 4.5 ~ 5.5t/ time; Pressure filter unit enter mud amount (by 90 ~ 95% moisture content meters): 45 ~ 55t (90 ~ 95% water ratio)/time; Pressure filter model: XMZGFSZL800/2000-U, the automatic deeply dehydrating sludge pressure filter of autoclave diaphragm; Filter Press area: 800m; Pressure filter number of units: 2; The sewage that filter-press dehydration unit is discharged can be delivered to Sewage Plant and process.
Implementation result:
Treatment scale: 200t/d;
Enter mud shale: water ratio 78 ~ 82%;
Main mud extraction shale after sewage treatment process process of the present invention: water ratio is below 45%;
Operation energy consumption: 6.0 ~ 6.5kW.h/t (78 ~ 82% water content sludge).
Embodiment 2
Certain city's sludge deep processing enter project, treatment scale 500t/d (200t/d (water ratio 78 ~ 82%)+300t/d (water ratio 98.8 ~ 99.2%)), as shown in Figure 2 and Figure 4, a kind of built-up type deep dehydration system for sludge, comprise sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit, described sewage sludge feed unit comprises mud dilution homogeneous pond, mud blending transportation assembly, mud homogeneous pond, lift pump, mechanical thickener and dosing assembly, described mud dilution homogeneous pond is connected with described sludge conditioning modification unit by mud blending transportation assembly, described mud homogeneous pond is connected with described mechanical thickener by lift pump, described mud homogeneous pond is also diluted homogeneous pond with described mud and is connected, described mechanical thickener is connected with described sludge conditioning modification unit, described dosing assembly is connected with described mechanical thickener, described sludge conditioning modification unit is connected with described filter-press dehydration unit.Described mud dilution homogeneous pond opening for feed is provided with 45 ~ 60 ° of slopes 1, graticule mesh 2 and hydraulic pressure storehouse lid 3, and described mud dilution homogeneous pond is buried, and it is 0.3 ~ 0.5m that overhead height h is pushed up in pond.
Specifically details are as follows for the Deep dehydration technique of this built-up type deep dehydration system for sludge:
(1) mud of water ratio 98.8 ~ 99.2% is delivered to mechanical thickener by lift pump concentrate through mud homogeneous pond process rear portion, obtain the mud of water ratio 93 ~ 97%, another part delivers to mud dilution homogeneous pond, dilutes the mud of water ratio 78 ~ 82%; The mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by opening for feed, obtains the mud of water ratio 90 ~ 95%: design scale 500t/d (200t/d (water ratio 78 ~ 82%)+300t/d (water ratio 98.8 ~ 99.2%)); Water ratio 78 ~ 82% feed tank, useful volume: 430m
3, water ratio 78 ~ 82% mud splicing time: receive the fortune system activity duration according to mud and determine, designing by 24h; Receive fortune vehicle: by 20 ~ 30T sludge dump truck consider, every day 10 ~ 14 mud cars; The mud homogeneous pond useful volume 130m of 98.8 ~ 99.2% mud
3, by integrated dosing assembly to mechanical thickener dosing, the component of dosing be coagulating agent as PAM, addition is 2 ‰ of mud dry weight;
(2) mud that step (1) obtains is delivered to sludge conditioning modification unit by mud blending transportation assembly, add amendment to nurse one's health: sludge conditioning modification unit comprises sludge conditioning pond, lime bin, Lime-Injecting assembly, polymerize aluminum chloride storage pond, polymerize aluminum chloride adds assembly, crusher and mix and blend assembly, described lime bin is connected with described Lime-Injecting assembly, described polymerize aluminum chloride storage pond adds assembly with described polymerize aluminum chloride and is connected, sludge conditioning modification unit multilayer is vertically provided with lime and polymerize aluminum chloride adds assembly, crusher and mix and blend assembly.Amendment adopts two kinds of amendments, amendment 1----coagulant aids, and the addition of lime is 25% of mud dry weight; Amendment 2----coagulating agent, the addition of pulvis polymerize aluminum chloride be 5% of mud dry weight or the addition of liquid polymerization aluminum chloride be 25% of mud dry weight.Configuration 2 cover high-performance blade mixer, lime bin and screw feeder.Every cover system adopts cycle operation mode, cycle of operation 2h.Each treatment cycle working process comprises: sewage sludge feed, add coagulating agent, add coagulant aids, stir 1.25h, hybrid reaction 0.75h altogether; The sewage that mechanical thickener is discharged can be delivered to Sewage Plant and process.
(3) mud that step (2) obtains is delivered to filter-press dehydration cell processing: filter-press dehydration unit comprises sewage sludge feed pump, diaphragm filter press, hydraulic pressure storage bucket and rotary conveyor, treatment scale 215t/d (water ratio 78 ~ 82%), not containing conditioning dosage; The over dry sludge quantity of process every day: 55t/d; Feed sludge water ratio: 98.8 ~ 99.2%; Discharging moisture percentage in sewage sludge :≤60%; Pressure filter working hour every day: 20h/d; The pressure filter work period: 4h, charging 40 ~ 90min, squeezing time 30 ~ 60min, discharging time 30 ~ 90min; Pressure filter washing time and the frequency: 80min, 1 times/day; The over dry sludge quantity of pressure filter unit process: 4.5 ~ 5.5t/ time; Pressure filter unit enter mud amount (by 98.8 ~ 99.2% moisture content meters): 45 ~ 55t (98.8 ~ 99.2% water ratio)/time; Pressure filter model: XMZGFSZL800/2000-U, the automatic deeply dehydrating sludge pressure filter of autoclave diaphragm; Filter Press area: 800m; Pressure filter number of units: 3 (2 is standby with 1); The sewage that filter-press dehydration unit is discharged can be delivered to Sewage Plant and process.
Implementation result:
Treatment scale: 500t/d;
Enter mud shale: water ratio 78 ~ 82% (200t/d)+water ratio 98.8 ~ 99.2% (300t/d);
Main mud extraction shale after sewage treatment process process of the present invention: water ratio is below 60%;
Operation energy consumption: 9.5kW.h/t (78 ~ 82% water content sludge).
Embodiment 3
Certain city's deeply dehydrating sludge engineering, treatment scale 600t/d (300t/d (water ratio 78 ~ 82%)+300t/d (water ratio 98.8 ~ 99.2%)), as shown in Figure 3 and Figure 4, a kind of built-up type deep dehydration system for sludge, comprise sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit, described sewage sludge feed unit comprises mud dilution homogeneous pond, mud blending transportation assembly, mud homogeneous pond, lift pump, mechanical thickener and dosing assembly, described mud dilution homogeneous pond is connected with described sludge conditioning modification unit by mud blending transportation assembly, described mud homogeneous pond is connected with described mechanical thickener by lift pump, described mud homogeneous pond is also diluted homogeneous pond with described mud and is connected, described mechanical thickener is connected with described sludge conditioning modification unit, described dosing assembly is connected with described mechanical thickener, described sludge conditioning modification unit is connected with described filter-press dehydration unit.Described mud dilution homogeneous pond opening for feed is provided with 45 ~ 60 ° of slopes 1, graticule mesh 2 and hydraulic pressure storehouse lid 3, and described mud dilution homogeneous pond is buried, and it is 0.3 ~ 0.5m that overhead height h is pushed up in pond.
Specifically details are as follows for the Deep dehydration technique of this built-up type deep dehydration system for sludge:
(1) mud of water ratio 98.8 ~ 99.2% delivers to mud dilution homogeneous pond after the process of mud homogeneous pond, dilutes the mud of water ratio 78 ~ 82%; The mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by opening for feed, obtains the mud of water ratio 90 ~ 95%: design scale 600t/d (water ratio 98.8 ~ 99.2%); The water ratio 80% mud splicing time: receive the fortune system activity duration according to mud and determine, designing by 24h; Receive fortune vehicle: by 20 ~ 30T sludge dump truck consider, every day 10 ~ 14 mud cars; By integrated dosing assembly to mechanical thickener dosing, the component of dosing be coagulating agent as PAM, addition is 0.2 ‰ of mud dry weight;
(2) mud that step (1) obtains is delivered to sludge conditioning modification unit by mud blending transportation assembly, add amendment to nurse one's health: sludge conditioning modification unit comprises sludge conditioning pond, lime bin, Lime-Injecting assembly, polymerize aluminum chloride storage pond, polymerize aluminum chloride adds assembly, crusher and mix and blend assembly, described lime bin is connected with described Lime-Injecting assembly, described polymerize aluminum chloride storage pond adds assembly with described polymerize aluminum chloride and is connected, sludge conditioning modification unit multilayer is vertically provided with lime and polymerize aluminum chloride adds assembly, crusher and mix and blend assembly.Amendment adopts two kinds of amendments, amendment 1----coagulant aids, the addition of lime be mud dry weight 30%; Amendment 2----coagulating agent, the addition of pulvis polymerize aluminum chloride be 15% of mud dry weight or the addition of liquid polymerization aluminum chloride be 30% of mud dry weight.Configuration 2 cover high-performance blade mixer, lime bin and screw feeder.Every cover system adopts cycle operation mode, cycle of operation 2h.Each treatment cycle working process comprises: sewage sludge feed, add coagulating agent, add coagulant aids, stir 1.25h, hybrid reaction 0.75h altogether;
(3) mud that step (2) obtains is delivered to filter-press dehydration cell processing: filter-press dehydration unit comprises sewage sludge feed pump, diaphragm filter press, hydraulic pressure storage bucket and rotary conveyor, treatment scale 315t/d (water ratio 78 ~ 82%), not containing conditioning dosage; The over dry sludge quantity of process every day: 80t/d; Feed sludge water ratio: 90 ~ 95%; Discharging moisture percentage in sewage sludge :≤60%; Pressure filter working hour every day: 21h/d; The pressure filter work period: 4h, charging 40 ~ 90min, squeezing time 30 ~ 60min, discharging time 30 ~ 90min; Pressure filter washing time and the frequency: 80min, 1 times/day; The over dry sludge quantity of pressure filter unit process: 4.5 ~ 5.5t/ time; Pressure filter unit enter mud amount (by 90 ~ 95% moisture content meters): 45 ~ 55t (90 ~ 95% water ratio)/time; Pressure filter model: XMZGFSZL800/2000-U, the automatic deeply dehydrating sludge pressure filter of autoclave diaphragm; Filter Press area: 800m; Pressure filter number of units: 4 (3 is standby with 1); The sewage that filter-press dehydration unit is discharged can be delivered to Sewage Plant and process.
Implementation result:
Treatment scale: 600t/d;
Enter mud shale: water ratio 78 ~ 82% (300t/d)+water ratio 98.8 ~ 99.2% (300t/d);
Main mud extraction shale after sewage treatment process process of the present invention: water ratio is below 60%;
Operation energy consumption: 8 ~ 8.5kW.h/t (78 ~ 82% water content sludge).
Above-describedly be only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalently replace and improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. a built-up type deep dehydration system for sludge, it is characterized in that, comprise sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit, described sewage sludge feed unit comprises mud dilution homogeneous pond and mud blending transportation assembly, described mud dilution homogeneous pond is connected with described sludge conditioning modification unit by mud blending transportation assembly, and described sludge conditioning modification unit is connected with described filter-press dehydration unit.
2. built-up type deep dehydration system for sludge according to claim 1, it is characterized in that, described sewage sludge feed unit also comprises mud homogeneous pond, lift pump and mechanical thickener, described mud homogeneous pond is connected with described mechanical thickener by lift pump, described mud homogeneous pond is also diluted homogeneous pond with described mud and is connected, and described mechanical thickener is connected with described sludge conditioning modification unit.
3. built-up type deep dehydration system for sludge according to claim 1, is characterized in that, described sewage sludge feed unit also comprises mud homogeneous pond, and described mud homogeneous pond is diluted homogeneous pond with described mud and is connected.
4. the built-up type deep dehydration system for sludge according to any one of claims 1 to 3, is characterized in that, also to comprise any one of following characteristics or multinomial:
(1) opening for feed in mud dilution homogeneous pond is provided with 45 ~ 60 ° of slopes;
(2) opening for feed in mud dilution homogeneous pond is provided with graticule mesh;
(3) opening for feed in mud dilution homogeneous pond is provided with hydraulic pressure Cang Gai;
(4) described mud dilution homogeneous pond is buried, top, pond 0.3 ~ 0.5m above ground level.
5. the built-up type deep dehydration system for sludge according to any one of claims 1 to 3, is characterized in that, described sewage sludge feed unit also comprises the dosing assembly to described mechanical thickener dosing.
6. the built-up type deep dehydration system for sludge according to any one of claims 1 to 3, it is characterized in that, described sludge conditioning modification unit comprises sludge conditioning pond, amendment memory module and amendment and adds assembly, and described modifier memory module adds assembly with described amendment and is connected.
7. built-up type deep dehydration system for sludge according to claim 6, is characterized in that, also to comprise any one of following characteristics or multinomial:
(1) described amendment memory module comprises lime bin and polymerize aluminum chloride storage pond, described amendment adds assembly and comprises Lime-Injecting assembly and polymerize aluminum chloride adds assembly, described lime bin is connected with described Lime-Injecting assembly, and described polymerize aluminum chloride storage pond adds assembly with described polymerize aluminum chloride and is connected;
(2) described sludge conditioning modification unit also comprises crusher;
(3) described sludge conditioning pond is provided with mix and blend assembly.
8. the built-up type deep dehydration system for sludge according to any one of claims 1 to 3, it is characterized in that, described filter-press dehydration unit comprises sewage sludge feed pump, pressure filter and hydraulic pressure storage bucket, the opening for feed of sewage sludge feed pump exports with sludge conditioning pond and is connected, the discharge port of sewage sludge feed pump is connected with described pressure filter, and described hydraulic pressure storage bucket is connected with the outlet of described pressure filter.
9. built-up type deep dehydration system for sludge according to claim 8, is characterized in that, described filter-press dehydration unit is also provided with diaphragm assembly and press unit.
10. the built-up type deep dehydration system for sludge according to any one of claims 1 to 3, it is characterized in that, described built-up type deep dehydration system for sludge also comprises biological deodorizing unit, and sewage sludge feed unit, sludge conditioning modification unit are connected with described biological deodorizing unit with the pneumatic outlet of filter-press dehydration unit.
11. built-up type deep dehydration system for sludges according to any one of claims 1 to 3, it is characterized in that, described built-up type deep dehydration system for sludge also comprises the PLC control system of sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit.
12. 1 kinds of built-up type deep sludge dewatering process, is characterized in that, adopt the built-up type deep dehydration system for sludge described in any one of claim 1 to 11 to dewater, comprise the following steps:
(1) mud is through sewage sludge feed cell processing, obtains water ratio mud within the specific limits;
(2) mud that step (1) obtains is delivered to sludge conditioning modification unit, add amendment and nurse one's health;
(3) mud that step (2) obtains is delivered to filter-press dehydration cell processing.
13. Deep dehydration technique according to claim 12, is characterized in that, in step (1), the mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by mud blending transportation assembly, obtains the mud of water ratio 90 ~ 95%.
14. Deep dehydration technique according to claim 12, it is characterized in that, in step (1), the mud of water ratio 98.8 ~ 99.2% is delivered to mechanical thickener through mud homogeneous pond process rear portion by lift pump and is concentrated, obtain the mud of water ratio 93 ~ 97%, another part delivers to mud dilution homogeneous pond, dilutes the mud of water ratio 78 ~ 82%; The mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by mud blending transportation assembly, obtains the mud of water ratio 90 ~ 95%.
15. Deep dehydration technique according to claim 12, is characterized in that, in step (1), the mud of water ratio 98.8 ~ 99.2% delivers to mud dilution homogeneous pond after the process of mud homogeneous pond, dilutes the mud of water ratio 78 ~ 82%; The mud of water ratio 78 ~ 82% delivers to mud dilution homogeneous pond process by mud blending transportation assembly, obtains the mud of water ratio 90 ~ 95%.
16. Deep dehydration technique according to claim 14, is characterized in that, by dosing assembly to described mechanical thickener dosing, the component of dosing is coagulating agent.
17., according to claim 12 to the Deep dehydration technique described in 16 any one, is characterized in that, also to comprise any one of following characteristics or multinomial:
(1) described amendment comprises lime and polymer alumina;
(2) described Deep dehydration technique also comprises the gas of sewage sludge feed unit, sludge conditioning modification unit and filter-press dehydration unit generation through biological deodorizing cell processing.
18. Deep dehydration technique according to claim 17, is characterized in that, in described (1) item, the addition of described lime is 20 ~ 30% of mud dry weight; The form of described polymerize aluminum chloride is pulvis or liquid state, and the addition of pulvis polymerize aluminum chloride is 5 ~ 15% of mud dry weight, and the addition of liquid polymerization aluminum chloride is 25 ~ 30% of mud dry weight.
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| CN109502950A (en) * | 2018-09-28 | 2019-03-22 | 广州云轩环保工程有限公司 | A kind for the treatment of process of sludge dewatering |
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| CN113800731A (en) * | 2021-09-14 | 2021-12-17 | 蕉岭伟态环保有限责任公司 | Harmless environmental protection treatment system for municipal sludge |
| CN114873895A (en) * | 2022-05-18 | 2022-08-09 | 上海申耀环保工程有限公司 | Water works mud sediment decrement and resourceful treatment system |
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| CN111268886A (en) * | 2020-02-18 | 2020-06-12 | 中科乐美环保科技有限公司 | Deep dehydration method for sludge |
| CN113800731A (en) * | 2021-09-14 | 2021-12-17 | 蕉岭伟态环保有限责任公司 | Harmless environmental protection treatment system for municipal sludge |
| CN114873895A (en) * | 2022-05-18 | 2022-08-09 | 上海申耀环保工程有限公司 | Water works mud sediment decrement and resourceful treatment system |
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