CN203999289U - Sewage sludge treatment unit - Google Patents
Sewage sludge treatment unit Download PDFInfo
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- CN203999289U CN203999289U CN201420437875.3U CN201420437875U CN203999289U CN 203999289 U CN203999289 U CN 203999289U CN 201420437875 U CN201420437875 U CN 201420437875U CN 203999289 U CN203999289 U CN 203999289U
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Abstract
The utility model discloses a kind of sewage sludge treatment unit, comprise filter-pressing device 1, shredder assembly 2 and drying installation 3, this device also comprises mud freezing container 4 and lyophilize energy cycle system, lyophilize energy cycle system comprises compressor 5, the first vaporizer 6, condenser 7 and is arranged at the second vaporizer 8 in mud freezing container, the outlet side of compressor is connected with condenser, condenser is connected with the first vaporizer through throttling element, and the first vaporizer is connected with the inlet end of compressor through the second vaporizer; Described condenser is connected by gas pipeline 10 and drying installation bottom, the first vaporizer be connected with drying installation top by gas pipeline, while condenser is connected by gas pipeline with the first vaporizer.The utility model is without adding chemicals in mud, treating processes can not increase mud handling capacity, and the recycle of working medium energy has improved freezing efficiency and the heat utilization ratio of mud greatly.
Description
Technical field
The utility model relates to sewage sludge process field, specifically a kind of sewage sludge treatment unit.
Background technology
In sewage treatment process, produce a large amount of mud, its quantity accounts for the 0.3%-0.5% that processes the water yield, processing investment and the running cost of mud are very huge, generally account for the 20%-50% of sewage work's working cost for the expense of sludge treatment, have brought white elephant to sewage disposal.Sludge dewatering is the key link of sludge treatment, all significant for follow-up dry, the conveying of mud, landfill, recycling etc.The key of sludge dewatering is to improve the dewatering of mud, and current traditional treatment process is first to nurse one's health by adding flocculation agent, and then pressure filter carries out mechanical dehydration, and landfill, fermentation composting etc. are carried out in the mud outward transport that forms water ratio 60% left and right.Adding flocculation agent pretreatment process is the throwing out by flocculation agent, reduce the avidity of mud and water, change the existence form of moisture in mud, in and sewage in contrary electric charge, compression double electric layer, plays adsorption bridging to de-steady flocculated particle, makes it form fast large flco, thereby make elimination of colloid stability cohesion, realize solid-liquid separation.Flocculant dosage is to account for the per-cent of sewage sludge solid dry weight, and different flocculant dosages can be distinguished to some extent.Although can significantly improve the dewatering of mud by adding the method for flocculation agent, due to a large amount of flocculation agent of needs, not only increase the cost of sludge treatment, and a large amount of flocculation agents can be increased in the mud after dehydration, strengthen the treatment capacity of mud.The amount of heat that other pretreatment processs need to consume as supersound process, and need to set up ultrasonic processing apparatus; Adopt biological process and thermodynamic method need to consume biotechnological formulation and heat.
Adopt freezing method to carry out pre-treatment in early stage to mud, mud is through destroying the bonding force of mud and water and destroy the structure (be similar to freezing after built-in bean curd) of colloid after repeatedly freezing, make elimination of colloid stability cohesion and membranolysis, make out to form the easily interstitial water to remove of mechanical means with the cell interior water dialysis that mechanical means is difficult to remove, the rapid sedimentation of mud granule, dewatering speed is front higher tens times than freezing, adopt freezing method not add medicament, can save reagent cost, and can additionally not increase the mud handling capacity in later stage, again in conjunction with mud method for subsequent processing, complete sludge deep minimizing processing.
But, the freezing main dependence physical environment of prior art to mud, mud being placed in to outdoor dependence physical environment under arctic weather is cooled to-10 DEG C of left and right and carries out freezing and thaw, but this technique exists, efficiency is low, the problem of length consuming time, if and just in southern area or cannot operate in situation non-winter, natural condition require comparatively harsh.In addition, prior art is used external force carry out freezing and thaw and need to freeze and heat dual energy mud mud, and cost is very high, therefore be difficult to apply.
Utility model content
In view of this, the problem that increase flocculation agent can increase mud handling capacity and freezing efficiency is low, cost is high that the utility model exists for above-mentioned prior art, provide a kind for the treatment of processes can not increase mud handling capacity, the sewage sludge treatment unit that freezing efficiency is high and capacity usage ratio is high.
Technical solution of the present utility model is, a kind of sewage sludge treatment unit of following structure is provided, comprise filter-pressing device, shredder assembly and drying installation, filter-pressing device carries out carrying out break process by shredder assembly after press filtration processing to mud, enters drying installation and carry out drying treatment after sludge crushing;
Described sewage sludge treatment unit also comprises mud freezing container and lyophilize energy cycle system, described lyophilize energy cycle system comprises compressor, the first vaporizer, condenser and is arranged at the second vaporizer in mud freezing container, the outlet side of compressor is connected with condenser, condenser is connected with the first vaporizer through throttling element, and the first vaporizer is connected with the inlet end of compressor through the second vaporizer; Described condenser is connected with drying installation bottom by gas pipeline, and the first vaporizer is connected with drying installation top by gas pipeline, and described condenser is connected with the first vaporizer by gas pipeline simultaneously.
Adopt above structure, the utility model compared with prior art, have the following advantages: adopt the utility model, utilize lyophilize energy cycle system, realized the freezing of mud in mud freezing container and being dried the mud in drying installation simultaneously, working medium is under compressor effect, output High Temperature High Pressure gaseous working medium, through condenser, heat in working medium is by absorption of air, transfer heat to air, air themperature raises, Temperature of Working reduces, warm air passes in drying installation material is dried, working medium is condensed and becomes high-pressure liquid, high-pressure liquid working medium becomes low-pressure liquid working medium after throttling element step-down, low-pressure liquid working medium enters into the first vaporizer, absorb the air heat (from material top air out) in the first vaporizer, to air cooling-down, after saturated air cooling, the moisture that it can hold reduces, unnecessary hydrogenesis becomes liquid water to drain by the water accumulating disc of the first vaporizer, after working medium heat absorption, become low pressure gaseous state from low-pressure liquid (insufficient if working medium absorbs the heat of air, the working medium that can only ensure operative liquid flashes to gaseous working medium, and the liquid refrigerant of remainder and gaseous working medium form two-phase working substance) enter into the second vaporizer, working medium absorbs the heat of mud in the second vaporizer, mud is cooled to needed freezing temp-10 DEG C～-15 DEG C (this temperature range is better, but be not limited to this numerical range), now liquid working substance is gasificated into gaseous working medium, gaseous working medium enters in compressor.Mud is through freeze-thaw (thaw and can naturally thaw) repeatedly in mud freezing container, destroy the structure of mud, enter filter-pressing device through the mud thawing, mud is pressed into bulk pie mud by filter-pressing device, send into again shredder assembly and carry out fragmentation formation mud granule, mud granule is dried in drying installation, has realized the stage processing of mud.Owing to need not adding chemicals in mud, therefore treating processes can not increase mud handling capacity; The recycle of working medium energy has improved the freezing efficiency of mud greatly, only need the compressor energy a small amount of by cost, working medium can be by the heat " carrying " that is several times as much as energy consumption of compressor in freezing container in loft drier, realize the freezing and drying sludge of mud simultaneously, solve the cold source of freezing needs, solved again the origin of heat of dry needs, made cold and heat reach an extraordinary balance, greatly improved heat service efficiency, energy-saving effect is obvious.
As preferably, described mud freezing container is multiple, the second vaporizer is corresponding one by one with mud freezing container, the two ends of the second vaporizer in multiple mud freezing containers are connected with the first vaporizer and compressor by working medium reversing valve respectively, the bottom of mud freezing container is provided with filtration, and the bottom of multiple mud freezing containers is passed through liquid reversing valve and is communicated with filter-pressing device through fluid pipeline.Like this, the mud in a mud freezing container carry out freezing in, the mud of other mud freezing container carries out nature and thaws, what thawed is directly delivered in filter-pressing device, thereby improve processing efficiency, can carry out non-stop run.
As preferably, described drying installation comprises loft drier and mud panel turnover mechanism, described mud panel turnover mechanism, and level is arranged on the vertical height of difference in loft drier, described mud panel turnover mechanism is staggered, and a mud panel turnover mechanism of bottommost layer stretches out outside loft drier.Like this, mud enters drying installation after fragmentation, first fall into the mud panel turnover mechanism the superiors, along with the transmission of mud panel turnover mechanism, mud drops on the mud panel turnover mechanism of lower one deck, the mud panel turnover mechanism of lower one deck commutates and drives to other one end, and so forth, can realize warm air and contact up and down with mud, omnibearing dry, improve drying effect, in the time dropping down onto a mud panel turnover mechanism of bottommost layer, because it stretches out outside loft drier, mud is sent to outside loft drier by it, enters next step operation processing.
As preferably, described filter-pressing device is plate-and-frame filter press, plate-and-frame filter press comprises multiple sheet frames, below sheet frame, be provided with drawing-plate mechanism, described drawing-plate mechanism comprises polylith guiding piece and slide plate, is provided with articulated linkage, and is equipped with roller between adjacent two guiding pieces under every guiding piece, described polylith guiding piece is placed on slide plate, and can be rolled and be connected with slide plate by roller.Like this, carry out pull by polylith drawing-plate mechanism, can realize the pull of multiple sheet frames, solved the current problem of a sheet frame of pull simultaneously, shorten the arm-tie time, improved the efficiency of press filtering of filter-pressing device.
Brief description of the drawings
Fig. 1 is sewage sludge treatment unit schematic diagram of the present utility model;
Fig. 2 is the structural representation of drawing-plate mechanism;
Guiding piece as shown in the figure, 1, filter-pressing device, 1.1, sheet frame, 1.2,, 1.3, slide plate, 1.4, articulated linkage, 1.5, roller, 2, shredder assembly, 3, drying installation, 3.1, loft drier, 3.2, mud panel turnover mechanism, 4, mud freezing container, 5, compressor, 6, the first vaporizer, 7, condenser, 8, the second vaporizer, 9, throttling element, 10, gas pipeline, 11, working medium reversing valve, 12, filtration, 13, liquid reversing valve, 14, fluid pipeline, 15, rotor pump.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in the figure, a kind of sewage sludge treatment unit of the present utility model, comprise filter-pressing device 1, shredder assembly 2 and drying installation 3, filter-pressing device 1 carries out carrying out break process by shredder assembly 2 after press filtration processing to mud, enters drying installation 3 and carry out drying treatment after sludge crushing;
Described sewage sludge treatment unit also comprises mud freezing container 4 and lyophilize energy cycle system, described lyophilize energy cycle system comprises compressor 5, the first vaporizer 6, condenser 7 and is arranged at the second vaporizer 8 in mud freezing container 4, the outlet side of compressor 5 is connected with condenser 6, condenser 7 is connected with the first vaporizer 6 through throttling element 9, and the first vaporizer 6 is connected with the inlet end of compressor 5 through the second vaporizer 8; Described condenser 7 is connected with drying installation 3 bottoms by gas pipeline 10, the first vaporizer 6 be connected with drying installation 3 tops by gas pipeline 10, simultaneously described condenser 7 is connected by gas pipeline 10 with the first vaporizer 6.
Above technology has formed the general planning that solves the utility model technical problem.
Described mud freezing container 4 is multiple, the second vaporizer 8 is corresponding one by one with mud freezing container 4, the two ends of the second vaporizer 8 in multiple mud freezing containers 4 are connected with the first vaporizer 6 and compressor 5 by working medium reversing valve 11 respectively, the bottom of mud freezing container 4 is provided with filtration 12, and the bottom of multiple mud freezing containers 4 is communicated with filter-pressing device 1 by liquid reversing valve 13 and through fluid pipeline 14; Mud after thawing pumps into filter-pressing device 1 by rotor pump 15 from mud freezing container 4.
Described drying installation 3 comprises loft drier 3.1 and mud panel turnover mechanism 3.2, described mud panel turnover mechanism, level is arranged on the vertical height of difference in loft drier 3.1, and described mud plate turnover 3.2 structures are staggered, and a mud panel turnover mechanism 3.2 of bottommost layer stretches out outside loft drier 3.1.
Described filter-pressing device 1 is plate-and-frame filter press, plate-and-frame filter press comprises multiple sheet frames 1.1, below sheet frame 1.1, be provided with drawing-plate mechanism, described drawing-plate mechanism comprises polylith guiding piece 1.2 and slide plate 1.3, between adjacent two guiding pieces 1.2, be provided with articulated linkage 1.4, and being equipped with roller 1.5 1.2 times at every guiding piece, described polylith guiding piece 1.2 is placed on slide plate 1.3, and is slidably connected with slide plate 1.3 by roller 1.5.
Sludge deep process flow is:
1) carry out repeatedly under 72 hours in freezing temp-10 DEG C～-15 DEG C, freezing time freezing;
2) between 20-50 DEG C, thaw (can adopt normal temperature unfreezing), thawing time is about 6 hours;
3) in plate-and-frame filter press, carry out mechanical dehydration, first it is the press filtration stage, press filtration pressure is 1.0-1.2Mpa, time of filter pressing is 1.5-2 hour, now moisture percentage in sewage sludge 65%-70%, then enter into the press dewatering stage, squeeze pressure is 1.5Mpa, the squeezing time is 1 hour, now the about 60%-65% of moisture percentage in sewage sludge;
4) plate-and-frame filter press bulk mud cake shape mud is out carried out to fragmentation in mud mixing shredder assembly, form little mud granule, mud granule size is generally in 20mm left and right;
5) mud after fragmentation is delivered in drying installation and is dried, drying installation is Multi-layer panel-turnover, and be 2 hours time of drying, drying temperature 50-60 DEG C, after super-dry, the water ratio of mud is 10%-30%, and now the second vaporizer provides cold to mud freezing container;
Above-mentioned steps is only the interim step of sludge treatment, and mud also can carry out burning disposal after drying, and carries out waste heat recovery, and waste heat is used for to thawing of the freezing mud of mud freezing container.
Specific works principle is as follows:
Mud enters into mud freezing container, first under the second vaporizer effect, refrigeration working medium enter into the second vaporizer in, working medium is absorbed heat to mud, make the freezing temp of mud reach specified temperature, mud under-10 DEG C～-15 DEG C, freezing time 72 hours through repeatedly freezing, destroy the bonding force of mud and water and the structure of destruction colloid, make elimination of colloid stability cohesion and membranolysis, the rapid sedimentation of mud granule, dewatering significantly improves, and dewatering speed is front higher tens times than freezing, freezing end.Now, working medium reversing valve flows to and commutates working medium, and working medium flow-reversal, in another mud freezing container, has now been passed into the air with certain temperature in freezing mud freezing container and thawed, air themperature is between 20-50 DEG C, and thawing time is 6 hours.
After thawing, mud passes through fluid pipeline, enter rotor pump, adding of rotor pump depress enter board and frame machine (plate-and-frame filter press) start press filtration carry out mechanical dehydration, after press filtration after a while, pull open sheet frame, the mud of mud cake shape drops in device for transporting objects, be transported to crusher through device for transporting objects, crusher carries out fragmentation to mud cake, form little mud granule, mud granule size remains on 20mm left and right, become short grained mud to improve the specific surface area of mud, be beneficial to the contact area that increases mud and high temperature air in dry, improve drying rate and effect.
Little mud granule enters into the upper strata turnover panel in drying machine, drops from level to level from top to down, and in the process dropping, constantly upset of mud, all fully contacts each surface with air.Dry air contacts with mud from bottom to top, absorption of air the moisture of mud become the wet air that humidity is very high and drop to below dew point after the first vaporizer, separate out moisture, the moisture of separating out is discharged through water accumulating disc, air continues after condenser heated, enters in loft drier mud is dried.Mud leaves loft drier after being heated and being dried after basecoat turnover panel.
For lignin-sludge better, after above interim processing, mud is transported to incinerator by device for transporting objects after leaving loft drier, adjusting enters a wind of combustion chamber, under refiner effect, make it in fluidized bed combustion state, because the medium in fluidized-bed is in suspended state, gas-solid can fully mix contact, in whole stove, the temperature of burning zone is comparatively even, and the approximately 850 DEG C of discharges of waste gas that produce after burning enter into waste heat boiler.Meanwhile, the thermal oil in waste heat boiler is heated to 250 DEG C by 220 DEG C, and the thermal oil after heated heats air by the second interchanger, and the air after heating enters into dehumidification system and thawing apparatus to drying sludge and the heat supply of thawing.Gas-cleaning installation is made up of removing with particle collection two parts of sour gas, gas sweetening can adopt semidrying, in flue gas, spray into certain calcium oxide, make it to react with the acidic substance in flue gas, and reach spray-dired reaction process by spraying plant control moisture.Depickling reactant is essentially solid state, there will not be discharge of wastewater.In flue gas, particle collection can be realized in conjunction with cyclonic separator or cloth bag by filtering net, sprays into a certain amount of activated carbon grain powder, the objectionable impuritiess such as absorption heavy metal in flue gas and Dioxins before.Can discharge atmosphere through purified gas, environmental pollution is few.
Below be only described with regard to the utility model preferred embodiment, but can not be interpreted as it is limitations on claims.The utility model is not only confined to above embodiment, and its concrete structure allows to change.In a word, all various variations of doing in the protection domain of the utility model independent claim are all in protection domain of the present utility model.
Claims (4)
1. a sewage sludge treatment unit, comprise filter-pressing device (1), shredder assembly (2) and drying installation (3), filter-pressing device (1) carries out carrying out break process by shredder assembly (2) after press filtration processing to mud, enters drying installation (3) and carry out drying treatment after sludge crushing; It is characterized in that:
Described sewage sludge treatment unit also comprises mud freezing container (4) and lyophilize energy cycle system, described lyophilize energy cycle system comprises compressor (5), the first vaporizer (6), condenser (7) and be arranged at the second vaporizer (8) in mud freezing container (4), the outlet side of compressor (5) is connected with condenser (7), condenser (7) is connected with the first vaporizer (6) through throttling element (9), the first vaporizer (6) is connected with the inlet end of compressor (5) through the second vaporizer (8), described condenser (7) is connected with drying installation (3) bottom by gas pipeline (10), the first vaporizer (6) is connected with drying installation (3) top by gas pipeline (10), and described condenser (7) is communicated with the first vaporizer (6) by gas pipeline (10) simultaneously.
2. sewage sludge treatment unit according to claim 1, it is characterized in that: described mud freezing container (4) is for multiple, the second vaporizer (8) is corresponding one by one with mud freezing container (4), the two ends of the second vaporizer (8) in multiple mud freezing containers (4) are connected with the first vaporizer (6) and compressor (5) by working medium reversing valve (11) respectively, the bottom of mud freezing container (4) is provided with filtration (12), the bottom of multiple mud freezing containers (4) is passed through liquid reversing valve (13) and is communicated with filter-pressing device (1) through fluid pipeline (14), mud after thawing pumps into filter-pressing device (1) by rotor pump (15) from mud freezing container (4).
3. sewage sludge treatment unit according to claim 1 and 2, it is characterized in that: described drying installation (3) comprises loft drier (3.1) and mud panel turnover mechanism (3.2), described mud panel turnover mechanism, level is arranged on the vertical height of difference in loft drier (3.1), described mud panel turnover mechanism (3.2) is staggered, and a mud panel turnover mechanism (3.2) of bottommost layer stretches out outside loft drier (3.1).
4. sewage sludge treatment unit according to claim 1 and 2, it is characterized in that: described filter-pressing device (1) is plate-and-frame filter press, plate-and-frame filter press comprises multiple sheet frames (1.1), be provided with drawing-plate mechanism in sheet frame (1.1) below, described drawing-plate mechanism comprises polylith guiding piece (1.2) and slide plate (1.3), between adjacent two guiding pieces (1.2), be provided with articulated linkage (1.4), and under every guiding piece (1.2), be equipped with roller (1.5), described polylith guiding piece (1.2) is placed on slide plate (1.3), and can roll and be connected with slide plate (1.3) by roller (1.5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437875.3U CN203999289U (en) | 2014-08-04 | 2014-08-04 | Sewage sludge treatment unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420437875.3U CN203999289U (en) | 2014-08-04 | 2014-08-04 | Sewage sludge treatment unit |
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| Publication Number | Publication Date |
|---|---|
| CN203999289U true CN203999289U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420437875.3U Withdrawn - After Issue CN203999289U (en) | 2014-08-04 | 2014-08-04 | Sewage sludge treatment unit |
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| Country | Link |
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| CN (1) | CN203999289U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098240A (en) * | 2014-08-04 | 2014-10-15 | 饶宾期 | Sewage sludge treatment device |
| RU2717520C1 (en) * | 2019-09-17 | 2020-03-23 | Андрей Викторович Богданов | Method for freezing colloidal sludge-lignin residues by trenching |
-
2014
- 2014-08-04 CN CN201420437875.3U patent/CN203999289U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098240A (en) * | 2014-08-04 | 2014-10-15 | 饶宾期 | Sewage sludge treatment device |
| CN104098240B (en) * | 2014-08-04 | 2015-10-21 | 中国计量学院 | Sewage sludge treatment unit |
| RU2717520C1 (en) * | 2019-09-17 | 2020-03-23 | Андрей Викторович Богданов | Method for freezing colloidal sludge-lignin residues by trenching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20151021 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |