CN206385004U - A kind of biochemical excess sludge processing unit - Google Patents
A kind of biochemical excess sludge processing unit Download PDFInfo
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- CN206385004U CN206385004U CN201720056460.5U CN201720056460U CN206385004U CN 206385004 U CN206385004 U CN 206385004U CN 201720056460 U CN201720056460 U CN 201720056460U CN 206385004 U CN206385004 U CN 206385004U
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Abstract
The utility model discloses a kind of biochemical excess sludge processing unit, the device includes sludge pretreatment pump, slurry filter, sludge surge tank, reaction feed pump, the warmup heater being sequentially connected by pipeline, hotline heater, pyroreaction tank, sludge knockout drum, sludge settling tank, sludge stabilization tank, dehydration feed pump and sludge dewatering equipment.The utility model is decomposed into soluble small molecular organic matter using high temperature and by the catalytic action of decrement agent by macromolecule organic, the irreducible water in sludge granule is set to be separated with sludge, microorganism, worm's ovum and the pathogen in sludge are eliminated simultaneously, less than 50% can be down to through dehydrated sludge moisture content, complete the harmless treatment to sludge, agricultural needs can be met, nitrogen, phosphorus, potassium and organic matter is corresponded with the requirement such as agriculture, woods, utilized for back to natures such as agricultural, afforestation as soil resource.
Description
Technical field
The utility model is related to biochemical excess sludge innoxious process for treating field, and in particular to a kind of biochemical excess sludge
Processing unit.
Background technology
Sewage treatment plant is a kind of sludge-like flocculate using biochemical excess sludge produced after Wastewater Treated by Activated Sludge Process,
The extremely complex heterogeneous dirt being made up of inorganic particle, microbial aggregate, parasitic ovum, pathogen, organic matter, colloid etc.
Walk is (referred to as：Sludge granule), macromolecule organic content is up to the 60-70% of sludge dry, and the key property of sludge is
Moisture content is high (up to more than 99%), and sludge is often in colloidal state, and colloidal solid very little, specific surface area is big, Sludge Surface
Bound water is more, it is difficult to remove.
The walk of 20%--30% solid contents generally can be obtained using mechanical dehydration.Walk moisture content is still higher, in glue
Shape liquid, the concentrated thing between liquid and solid, include a large amount of active microorganism aggregations, parasitic ovum, pathogen,
Content of organics is high, easily degenerates smelly, and it is big that it disposes difficulty.Existing landfill method, seasoning, burning method, can cause environment
Problem, cost of disposal is high.
Chinese patent Authorization Notice No.：CN102234170B Zhu Ren hairs disclose " a kind of quick reduction moisture percentage in sewage sludge
The summary of processing method and its device "：Hydrolyzed by atmospheric steam, high-temperature high pressure water press-dehydrating, material separation of solid and liquid.It is described normal
Steam hydrolysis is pressed, high-temperature high pressure water press-dehydrating continuously will largely consume steam, particularly：The ﹞ high temperature and high pressure hydrolysis tanks of " ﹝ 0025
Reaction temperature is 390 DEG C -420 DEG C, pressure 4Mpa -5Mpa ".Cause many using equipment, technical requirements are high, investment is big, it is difficult to
Promote the use of.
Chinese Patent Application No. number：Lee's CN201310443460.7 national literature discloses " a kind of sludge hydrolytic device and work
Skill ".It is a kind of incomplete processing procedure using hydrolysis, as described in the end of summary and [0026]：Sludge liquid after hydrolysis
The residence time for carrying out anaerobic digestion greatly shortens, it is only necessary to 5-10 days.Display sewage sludge harmlessness processing is not yet completed.(macromolecule
Organic matter：Grease and halogenated hydrocarbons are typically hydrolyzed in the basic conditions, and cellulose, starch, sucrose etc. are hydrolyzed in acid condition, egg
White matter is hydrolyzed in the presence of pepsin or trypsase, and these three conditions can not be realized simultaneously using Hydrolyze method.)
Authorization Notice No.：CN204490714U, Authorization Notice No.：CN203411449U, application publication number：
The dehydrating effect of device disclosed in CN104556629A is limited, and sludge not yet reaches harmless discharge requirement after disposal.
It is therefore desirable to develop the new equipment to sludge progress dehydration decrement and harmless treatment, produce and meet environmentally friendly want
The innoxious sludge asked, enables sludge back to nature to be utilized as soil resource.
Utility model content
In view of the above-mentioned problems, the utility model aims to provide a kind of sewage sludge harmlessness processing discharged to sewage treatment plant
Biochemical excess sludge processing unit.
To realize the technical purpose, scheme of the present utility model is：A kind of biochemical excess sludge processing unit, the device bag
The sludge pretreatment pump being sequentially connected by pipeline, slurry filter, sludge surge tank, reaction feed pump, warmup heater are included,
Hotline heater, pyroreaction tank, sludge knockout drum, sludge settling tank, sludge stabilization tank, dehydration feed pump and sludge dewatering
Machine；The sludge pretreatment pump is connected by pipeline with the sludge settling pond of sewage treatment plant；The reaction feed pump with it is described
Decrement agent system is additionally provided between sludge surge tank to be connected；Heated by pipeline with the preheating outlet of the pyroreaction tank
The import of device is connected, and the outlet of the warmup heater is connected by pipeline with the import of the sludge knockout drum；The heat conduction
The import of oil heater is also connected with outlet by pipeline with conduction oil heating system；The sludge import of the sludge settling tank is also
It is connected by pipeline with adjusting material system；The sludge import of the sludge stabilization tank is also connected by pipeline with stabiliser system；
It is described dehydration feed pump sludge outlet be also connected by pipeline with flocculant system, sludge with addition flocculant mix after again
Into sludge dewatering equipment dehydration.
Preferably, the sludge of the reaction feed pump discharge interior conduit continues through institute with the flow velocity more than 1.3 meter per seconds
State the tube side of warmup heater and the hotline heater.The sludge of decrement agent, warp are added in the import of reaction feed pump 4
The sludge for the outlet interior conduit crossed after the adherence pressure of reaction feed pump 4 is heated with continuing through preheating more than 1.3 meter per second high flow rates
The tube side heating of device 5 and hotline heater 6, tube side flow velocity is high, can pre- high temperature-proof sludge deposit fouling in tube side inwall.
Preferably, shell side sludge stream speed >=0.6 meter per second in the warmup heater 5.Improve the warmup heater 5
The meter per second of shell side sludge flow velocity >=0.6, can effectively prevent sludge to deposit blocking in shell side.
Preferably, the sludge temperature of the hotline heater outlet is increased to 175 DEG C and higher than saturated vapor pressure
It is lower to enter the pyroreaction tank.Accelerate the macromolecule organic point in sludge granule by the synergy of high temperature and decrement agent
The irreducible water of sludge granule is put in solution reaction, analysis, and mud decrement effect is obvious；Carry out disinfection to handle using high temperature simultaneously and eliminate sludge
In active microorganism, worm's ovum and pathogen, then by sludge separation of solid and liquid, quenched and stable processing, meet the items of sludge
Handle index, then the purification moisture percentage in sewage sludge after being handled through sludge dewatering equipment 12 can be down to less than 50%, complete the nothing to sludge
Evilization processing；Agricultural needs can be met, nitrogen, phosphorus, potassium and organic matter is corresponded with the requirement such as agriculture, woods, it is green for agricultural, gardens
The back to natures such as change are utilized as soil resource；Advanced treating, adjustment decrement agent consumption formula, can be by biochemical excess sludge
More than 90% macromolecule organic is decomposed, and a small amount of body refuse remained after dehydration is main by inorganic matter, water and a small amount of organic matter
Composition, can meet industrial general solid waste discharge requirement.Aqueous 97% to 99% biochemical sludge stoste be directly entered the present apparatus without
After evilization processing, sludge volume decrement is readily transported and utilized with back to nature as soil resource up to more than 98%.It is treated
Journey is closed, does not produce pernicious gas, realizes biochemical excess sludge harmless treatment, protection environmental protection.
Macromolecule organic is decomposed into water-soluble small by the utility model using high temperature and by the catalytic action of decrement agent
Molecular organic, makes the irreducible water in sludge granule be separated with sludge, while eliminating microorganism, worm's ovum and the cause of disease in sludge
Body, less than 50% can be down to through dehydrated sludge moisture content, completed the harmless treatment to sludge, can be met agricultural needs, make
Nitrogen, phosphorus, potassium and organic matter correspond with the requirement such as agriculture, woods, and soil resource profit is used as back to natures such as agricultural, afforestation
With.
Intensification is handled, adjustment decrement agent consumption formula, can be by biochemical excess sludge more than 90% macromolecule organic
Decompose, a small amount of body refuse remained after dehydration is mainly made up of inorganic matter, water and a small amount of organic matter, industrial general solid waste can be met
Emission request.Aqueous 97% to 99% biochemical sludge stoste is directly entered after present apparatus harmless treatment, sludge volume decrement
Up to more than 98%, it is readily transported and is utilized with back to nature as soil resource.
Processing procedure is closed, does not produce pernicious gas, realizes biochemical excess sludge harmless treatment, protection environmental protection.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, sludge pretreatment pump；2nd, slurry filter；3rd, sludge surge tank；4th, reaction feed pump；5th, preheating heating
Device；6th, hotline heater；7th, pyroreaction tank；8th, sludge knockout drum；9th, sludge settling tank；10th, sludge stabilization tank；11st, take off
Water feed pump；12nd, sludge dewatering equipment；13rd, decrement agent system；14th, conduction oil heating system；15th, adjusting material system；16th, stably
Agent system；17th, flocculant system.
Embodiment
The utility model is described in further details with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of biochemical excess sludge high temperature harmless treatment of optimal specific embodiment of the present utility model
Biochemical excess sludge produced by sewage treatment plant is carried out high temperature harmless treatment by device, the utility model：Pass through：1) one
The macromolecule organic in sludge granule is decomposed under fixed temperature and pressure, while improving the dewatering of sludge, with sludge
The increase of heated reaction temperature and pressure, and sludge are turned back flowing in many cascade heater high speeds, are more increased
Fierce collision between sludge granule and between tube wall, more accelerates the decomposition of sludge granule, promotes irreducible water and mud granule to separate；
2) add decrement agent and accelerate macromolecule organic decomposition reaction；3) active micro- life in high moderate pressure elimination sludge 1) is utilized
Thing, worm's ovum and pathogen；Add including sludge pretreatment pump 1, slurry filter 2, sludge surge tank 3, reaction feed pump 4, preheating
Hot device 5, hotline heater 6, pyroreaction tank 7, sludge knockout drum 8, sludge settling tank 9, sludge stabilization tank 10, dehydration charging
Pump 11 passes sequentially through pipeline with sludge dewatering equipment 12 and is connected；
The sludge pretreatment pump 1 is connected by pipeline with sludge of sewage treatment plant settling tank；
The import of reaction feed pump 4 also includes with decrement agent system 13 being connected by pipeline；
The decrement agent of the decrement agent system 13 is a kind of chemical catalyst of compounding, according to high score in biochemical excess sludge
Sub- content of organics and composition, and meet agricultural utilization of resources requirement or Industrial Solid Waste discharge standard and reasonable disposition, tool
There is the decrement agent for accelerating macromolecule organic decomposition reaction function；
The shell side import of warmup heater 5 is connected by pipeline with the outlet of pyroreaction tank 7, the shell side of warmup heater 5
Outlet is connected with the import of sludge knockout drum 8；
The shell side import of hotline heater 6 is also connected with outlet by pipeline with conduction oil heating system 14；
The sludge import of the sludge settling tank 9 is also connected by pipeline with adjusting material system 15, and the adjusting material is one
Plant the solvent that can dissolve and remain in harmful substance or metal in sludge；
Add adjusting material mixed with sludge it is quenched after enter back into sludge settling tank 9；
The sludge import of the sludge stabilization tank 10 is also connected by pipeline with stabiliser system 16, and the stabilizer is one
Plant acid or alkalescence chemical stabilizer；Add after stabilizer is mixed with sludge in pipe and enter back into sludge stabilization tank 10；
The sludge outlet of the dehydration feed pump 11 is also connected by pipeline with flocculant system 17, adds flocculant and pipe
Sludge dewatering equipment 12 is entered back into after interior sludge mixing to be dehydrated；The effect for adding flocculant is to improve the dehydration of sludge dewatering equipment
Performance.
Described sludge high temperature harmless treatment device, including：Decrement agent is added in the import of reaction feed pump 4, is made
Decrement agent is sufficiently mixed with sludge to be contacted, and the reaction feed pump 4 exports sludge to continue through more than 1.3 meter per second high flow rates
The tube side heating of warmup heater 5 and hotline heater 6, tube side flow velocity is high, can pre- high temperature-proof sludge deposited in tube side inwall
Fouling；Tube side outlet temperature is increased to 175 DEG C or so and enters pyroreaction tank 7 higher than saturated vapor pressure, by decrement agent
Synergy accelerate macromolecule organic decomposition reaction in sludge granule, the irreducible water of sludge granule, mud decrement are put in analysis
Effect is obvious；Carried out disinfection microorganism, worm's ovum and the pathogen for handling and eliminating in sludge using high temperature simultaneously, then is consolidated by sludge
Liquid is separated, quenched and stable processing, meets every processing index of sludge, then the purification sludge after the processing of sludge dewatering equipment 12
Moisture content can be down to less than 50%, complete the harmless treatment to sludge；Agricultural needs can be met, make nitrogen, phosphorus, potassium and organic matter
The requirement such as agriculture, woods is corresponded with, is utilized for back to natures such as agricultural, afforestation as soil resource；
Deeper processing, adjustment decrement agent consumption formula, can be by biochemical excess sludge more than 90% macromolecule organic
Decompose, a small amount of body refuse remained after dehydration is mainly made up of inorganic matter, water and a small amount of organic matter, industrial general solid waste can be met
Emission request.Aqueous 97% to 99% biochemical sludge stoste is directly entered after present apparatus harmless treatment, sludge volume decrement
Up to more than 98%, it is readily transported and is utilized with back to nature as soil resource.
The purpose of this utility model is achieved through the following technical solutions：
The biochemical excess sludge rise pressure input sludge filtration that the sludge pretreatment pump 1 produces sewage treatment plant
Device, removes the rubbish and impurity in sludge first, and sludge after filtering enters sludge surge tank 3, is used as charging reaction pump 4
Import pug,
Decrement agent is added in charging reaction pump 4 import, decrement agent is sufficiently mixed with sludge and contacts, it is anti-by charging
Pump 4 is answered to lift pump discharge pressure by design treatment amount；The warmup heater 5 is pumped into again：It is that a kind of tube side is passed in and out with shell side
Vertical tube-type heat exchanger of the mouth with link flange, often covers " U " type bayhead chain that heat exchanger passes through two ends by many heat exchangers
Connect and be composed in series.
The meter per second of tube side design current velocity >=1.3, the meter per second of shell side flow velocity >=0.6, as the increase of preheating temperature, and sludge exist
The tube side high speed of preheating heat exchanger 5 is turned back flowing, is more increased between sludge granule and the fierce collision between tube wall, is accelerated activity dirty
The decomposition of walk grain, mud granule diminishes, and irreducible water and the mud granule separation made, mud decrement effect is obvious；Recycle
Retort outlet sludge enters the heat of the shell side of preheating heat exchanger 5；Feed sludge in tube side is preheated, energy consumption is saved；It is then sent through institute
State hotline heater 6：It is that a kind of tube side imports and exports the vertical tube-type heat exchanger with link flange, tube side design stream with shell side
Speed >=1.3 meter per seconds, the meter per second of shell side flow velocity >=0.6 continues to heat in tube side and is preheated using the high temperature heat conductive oil for entering shell side
Sludge, 175 degree or so are heated to by sludge temperature；Enter back into the pyroreaction tank 7 and complete the innoxious place of macromolecule organic
Reaction treatment, has greatly improvement from the outlet at bottom sludge quality of pyroreaction tank 7, and solid organic content reduction, good fluidity goes out
Mouth sludge enters back into the shell side of warmup heater 5 and releases the sludge flowed in heat preheating tube side, and sludge is cooling in shell fluid flow
Process non-scaling, the meter per second of and shell side sludge flow velocity >=0.6, can effectively prevent sludge to deposit blocking in shell side；
The shell side sludge outlet of warmup heater 5 is connected by pipeline with reducer unit, and pressure-reducing valve passes through pipeline and institute
Sludge knockout drum 8 is stated to be connected；The sludge knockout drum 8 is sequentially entered again to carry out separation of solid and liquid, adjusted into sludge settling tank 9
Matter handles, carries out stable processing into sludge stabilization tank 10, meets every processing index of sludge, enters back into sludge dewatering equipment 12
Moisture percentage in sewage sludge after dewater treatment can be down to less than 50%, complete the harmless treatment to sludge.Point that separation process is produced
Liquid is solved, biochemical is good, and aqueous 97% to 99% biochemical sludge stoste is directly entered after present apparatus harmless treatment, sludge volume
Decrement is readily transported and utilized with back to nature as soil resource up to more than 98%.Handling process is closed, and harmful gas is not produced
Body, realizes biochemical excess sludge harmless treatment, protection environmental protection.
Described above, preferred embodiment only of the present utility model is every according to this not to limit the utility model
Any trickle amendment, equivalent substitution and improvement that the technical spirit of utility model is made to above example, should be included in this
Within the protection domain of utility model technical scheme.
Claims (4)
1. a kind of biochemical excess sludge processing unit, it is characterised in that：The device is pre- including the sludge being sequentially connected by pipeline
Handle pump, slurry filter, sludge surge tank, reaction feed pump, warmup heater, hotline heater, pyroreaction tank, dirt
Mud knockout drum, sludge settling tank, sludge stabilization tank, dehydration feed pump and sludge dewatering equipment；
Wherein, the sludge pretreatment pump is connected by pipeline with the sludge settling pond of sewage treatment plant；
Decrement agent system is additionally provided between the reaction feed pump and the sludge surge tank to be connected；
The outlet of the pyroreaction tank is connected by pipeline with the import of the warmup heater, and the warmup heater goes out
Mouth is connected by pipeline with the import of the sludge knockout drum；
The import of the hotline heater is also connected with outlet by pipeline with conduction oil heating system；
The sludge import of the sludge settling tank is also connected by pipeline with adjusting material system；
The sludge import of the sludge stabilization tank is also connected by pipeline with stabiliser system；
The sludge outlet of the dehydration feed pump is also connected by pipeline with flocculant system, and sludge is mixed with the flocculant added
After enter back into sludge dewatering equipment dehydration.
2. biochemical excess sludge processing unit according to claim 1, it is characterised in that：In the reaction feed pump discharge
The sludge of pipeline continues through the tube side of the warmup heater and the hotline heater with the flow velocity more than 1.3 meter per seconds.
3. biochemical excess sludge processing unit according to claim 1, it is characterised in that：The shell side of warmup heater 5
The meter per second of sludge flow velocity >=0.6.
4. biochemical excess sludge processing unit according to claim 1, it is characterised in that：The hotline heater outlet
Sludge temperature be increased to 175 DEG C and higher than saturated vapor pressure enter the pyroreaction tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720056460.5U CN206385004U (en) | 2017-01-17 | 2017-01-17 | A kind of biochemical excess sludge processing unit |
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| CN201720056460.5U CN206385004U (en) | 2017-01-17 | 2017-01-17 | A kind of biochemical excess sludge processing unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052878A (en) * | 2018-08-17 | 2018-12-21 | 河海大学 | A kind of microorganism sludge solidification environment-friendly materials and its application |
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- 2017-01-17 CN CN201720056460.5U patent/CN206385004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109052878A (en) * | 2018-08-17 | 2018-12-21 | 河海大学 | A kind of microorganism sludge solidification environment-friendly materials and its application |
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