CN109912174A - A kind of residual active sludge broken wall Deep dehydration treatment method - Google Patents
A kind of residual active sludge broken wall Deep dehydration treatment method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 208000005156 Dehydration Diseases 0.000 title claims abstract description 26
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- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 26
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
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- 238000000265 homogenisation Methods 0.000 claims abstract description 4
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- 238000012545 processing Methods 0.000 claims description 17
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 15
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 15
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 15
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 15
- ICUTUKXCWQYESQ-UHFFFAOYSA-N triclocarban Chemical compound C1=CC(Cl)=CC=C1NC(=O)NC1=CC=C(Cl)C(Cl)=C1 ICUTUKXCWQYESQ-UHFFFAOYSA-N 0.000 claims description 12
- 229960001325 triclocarban Drugs 0.000 claims description 12
- 229920002401 polyacrylamide Polymers 0.000 claims description 9
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 8
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 8
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- 239000005720 sucrose Substances 0.000 claims description 8
- 239000005457 ice water Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- WKDDRNSBRWANNC-UHFFFAOYSA-N Thienamycin Natural products C1C(SCCN)=C(C(O)=O)N2C(=O)C(C(O)C)C21 WKDDRNSBRWANNC-UHFFFAOYSA-N 0.000 claims description 6
- ZSKVGTPCRGIANV-ZXFLCMHBSA-N imipenem Chemical compound C1C(SCC\N=C\N)=C(C(O)=O)N2C(=O)[C@H]([C@H](O)C)[C@H]21 ZSKVGTPCRGIANV-ZXFLCMHBSA-N 0.000 claims description 6
- 229960002182 imipenem Drugs 0.000 claims description 6
- DMJNNHOOLUXYBV-PQTSNVLCSA-N meropenem Chemical compound C=1([C@H](C)[C@@H]2[C@H](C(N2C=1C(O)=O)=O)[C@H](O)C)S[C@@H]1CN[C@H](C(=O)N(C)C)C1 DMJNNHOOLUXYBV-PQTSNVLCSA-N 0.000 claims description 6
- 229960002260 meropenem Drugs 0.000 claims description 6
- TYMABNNERDVXID-DLYFRVTGSA-N Panipenem Chemical compound C([C@@H]1[C@H](C(N1C=1C(O)=O)=O)[C@H](O)C)C=1S[C@H]1CCN(C(C)=N)C1 TYMABNNERDVXID-DLYFRVTGSA-N 0.000 claims description 5
- 229950011346 panipenem Drugs 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims description 2
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- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims 2
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Abstract
The invention discloses a kind of excess sludge broken wall Deep dehydration treatment methods, residual active sludge is sent into broken wall homogenization groove by the processing method first, then inorganic agent is added into homogenization groove, treated, and sludge carries out osmotic shock broken wall, sludge is passed through in the charging spout of magnetic separator after broken wall, water treatment agent is added to it, auxiliary agent, magnetic powder, after reacting a period of time, carry out Magneto separate, it is separated by solid-liquid separation and handles sewage simultaneously, isolated water can direct emission or circulation, further progress dehydration after the recovered magnetic powder of separating obtained solid, dehydrated sludge moisture content≤45%, it can be used as further recycling raw material.
Description
Technical field
The present invention relates to a kind of excess sludge processing method more particularly to a kind of broken wall deep dehydration sides of excess sludge
Method.
Background technique
The processing of excess sludge has become the restraining factors that dirty water living creature processing technique is universal and runs.Solve excess sludge
The First Principles of processing and disposition are exactly sludge reduction, and mud decrement subtracts matter and volume reduction comprising sludge, i.e. reduction sludge produces
Raw amount and reduction mud volume.Traditional Treatment of Sludge is mainly to reduce containing for sludge using the methods of concentration, dehydration and drying
Water rate, in order to subsequent processing and disposition.But the problems such as generally existing treatment effeciency is low, and reagent cost is high.
The main reason for influencing sludge dewatering efficiency is the limit of the water and moisture intracellular in sludge extracellular polymeric (EPS)
System.Deeply dehydrating sludge, which refers to, improves sludge, destroys sludge and protects outer polymer and cell wall, release combines water, absorption
Water and water intracellular, improve dewatering performance of sludge, and further by effective measures make processing after moisture percentage in sewage sludge reach 60% with
Under.Sludge extracellular polymeric is microorganism under certain environment, and that secretes in its metabolic process is enclosed in microorganism wall
Outer poly-compounds.EPS may be generated by bacterium, it is also possible to and it is hydrolysate or the ion adsorbed from waste water, or
The organic matter being attracted in the waste water on wadding body, EPS include pod membrane, slime layer and other substances, and wherein organic moiety is main
It is made of polysaccharide, protein and DNA, lipid and humic acid etc..Studies have shown that most water is incorporated in EPS in sludge,
Therefore EPS is considered as the main factor for influencing dewatering performance of sludge.Influence of the chemical conditioning to dewatering performance of sludge by
Many researchs refer to, but can seldom reach effective broken wall simultaneously and discharge combination water intracellular, and it is big, at high cost that there is also dosages
The problems such as.
Commonly cracking EPS and the method for cell wall has method of chemical treatment, mechanical crushing method, ultrasonication, microwave method, electricity
Solution etc..But all there is the problems such as treatment effeciency is limited, and industrial application at high cost is in the presence of limitation in independent any processing method.It seeps
Method of the pressure ballistic method as sludge pretreatment thoroughly, is that cell is placed in the solution of hyperosmosis, due to the effect of osmotic pressure,
Intracellular water is just oozed out outward, and cell is shunk.After reaching balance, water is transferred to by medium rapid dilution, or by cell
Or in buffer, due to the suddenly change of osmotic pressure, extracellular water is rapidly permeated into the cell, is caused cell rapid expanding and is broken
It splits.By permeability evolution in conjunction with chemical method, pharmaceutical use will be substantially reduced, improves broken wall efficiency.
Ren Zhanqiang (the dehydration research of ultrasonication activated sludge cell wall, the 6th phase of volume 39 in 2014,105-108), grinds
Study carefully the principle using ultrasonication residual active sludge, it is living after influence of the different condition factor to treatment effect, and processing
The change situation of property sludge quality.Cavitation using ultrasonic wave etc. can make in activated sludge the cell wall of zoogloea and thin
After birth rupture releases cytosol therein etc., achievees the purpose that reduce sludge volume.High-frequency ultrasonication can be short
Intracellular organic substance is extracted in time；In low frequency ranges, the ultrasonication dehydrating effect of 44 W is best.Frequency herein
When asked when the ultrasonication of rate as 90 s, moisture percentage in sewage sludge is minimum (85% or so), and dehydrating effect is preferably less than 90 s or big
When 90 s, moisture percentage in sewage sludge rises, and dehydrating effect is deteriorated.After ultrasonication, the property of activated sludge can be made to improve.
High-power ultrasonics can release organic matter therein with bio-sludge degrading；Small-power ultrasonic wave can improve the swollen of sludge
Swollen characteristic and water separation capability reduce the moisture content of sludge.Sludge filtrate through ultrasonication and simple filtration, COD reach
4200mg/L or so.With the increase of ultrasound intensity, the settling property of sludge is gradually decreased.It is dirty but in strong range in a low voice
Mud settling property can still keep preferable states.But there are the problems such as at high cost, industrial application is limited for ultrasonication.
CN106116107A discloses a kind of method of deeply dehydrating sludge, including cement is added into sludge, and mixing is equal
It is even, mixing sludge is obtained, the weight percent that water dispenser is added is the 1-30% of sludge.The mixing sludge is subjected to filters pressing, is obtained
To dehydrated sludge cake.The present invention also provides a kind of filter-pressing devices.The invention is by being added cement into water-containing sludge to be processed
As modifier treatment agent, can have the function that abolish moisture sub-key in sludge, it is subsequent to use sludge dehydration device be water
It takes off to 22wt% hereinafter, improving the effect of deeply dehydrating sludge significantly, while this method has easy construction, processing cost
Low advantage.But it is larger that there are cement consumptions, and the problems such as unfavorable and resource utilization hinders is transported after solidification.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide at a kind of residual active sludge broken wall deep dehydration
Reason method.This method carries out broken wall pretreatment to sludge using medicament conditioning and osmotic shock broken wall United Technologies, after processing
Material enter magnetic separator and be separated by solid-liquid separation and handle sewage simultaneously, the solid material after separation carries out after magnetic powder recycles
Dehydration obtains dehydrated sludge cake, can be used as further resource utilization raw material, and whole process is generated without waste water, and sludge deep is de-
Sludge quantity significantly reduces after water.
The present invention provides a kind of residual active sludge broken wall Deep dehydration treatment method, the treating method comprises in following
Hold:
(1) broken wall homogenization groove is used, is used to receive residual active sludge and inorganic agent, wherein the inorganic agent includes trichlorine card
Class, nonylphenol polyoxyethylene ether, aluminium chloride and auxiliary agent A, are reacted after mixing；EDTA is added into slot after the reaction was completed
And sucrose solution, ice water is added after mixing and is handled, obtains the 1st stream after processing, the auxiliary agent A be Imipenem,
One or more of Meropenem, Panipenem；
(2) magnetic separator is used, is used to receive the 1st stream, auxiliary agent B, magnetic powder and the water treatment agent for coming from step (1), reaction
After separated, after separation the 2nd stream and water, the water obtained after processing can direct emission or recycling；
(3) magnetic powder recovering device is used, for receiving the 2nd stream obtained from step (2), after the recovered device recycling of magnetic powder
It is recycled, the 3rd stream is obtained after processing；
(4) sludge dewatering equipment is used, is used to receive the 3rd stream obtained from step (3), the 3rd stream is after dehydration
Dehydrated sludge cake and sewage are obtained, sewage returns to magnetic separator, and it is former to can be used as other recycling purposes less than 45% for moisture content of the cake
Material.
In processing method of the present invention, the additional amount of auxiliary agent A described in step (1) and residual activity as described in step (1)
The weight ratio of sludge Solid content is 1:700~1:100, and the additional amount of triclocarban and residual activity as described in step (1) are dirty
The weight ratio of mud Solid content is 1:1000~1:100；The additional amount of the nonylphenol polyoxyethylene ether with it is as described in step (1)
The weight ratio of residual active sludge Solid content is 1:400~1:60；The additional amount of the aluminium chloride is remained with as described in step (1)
The weight ratio of remaining activated sludge Solid content is 1:1000~1:100.
In processing method of the present invention, EDTA solution concentration described in step (1) is 2~20mM, and EDTA solution additional amount is
1/50~1/10 of residual active sludge volume described in step (1).In processing method of the present invention, sucrose described in step (1)
The concentration of solution is 33wt%~37wt%, the additional amount of sucrose solution and residual active sludge Solid content as described in step (1)
Weight ratio be 1:30~1:10.
In processing method of the present invention, the volume of ice water described in step (1) is 1~5 times of residual active sludge volume.Add
Entering ice water finishing time is 20 ~ 40min.
In processing method of the present invention, step (2) auxiliary agent B be cationic polyacrylamide, anionic polyacrylamide,
One or more of non-ionic polyacrylamide, amphoteric ion polyacrylamide, poly-ferric chloride, the additional amount of auxiliary agent B are
0.002wt%~1wt% of residual active sludge Solid content
In processing method of the present invention, it is 10wt%~20wt% that step (2) the magnetic powder solution, which is the concentration that magnetic powder and water are configured to,
Magnetic powder solution, the magnetic powder dosage be magnetic separator inlet amount 1wt%~5wt%.
In processing method of the present invention, step (2) water treatment agent is hydrogen peroxide, sodium hypochlorite, calcium hypochlorite, dioxy
Change one or more of chlorine, the additional amount of the water treatment agent and the weight ratio of residual active sludge Solid content be 1:200~
1:10。
In processing method of the present invention, step (4) described sludge dewatering equipment is centrifugal dehydrator, plate and frame filter press, stacked dirt
One or more of mud dewaterer, belt filter press.
Dehydrated sludge cake moisture content≤45% that processing method of the present invention obtains, can be used as the raw material of further resource utilization,
Magnetic separator processing water outlet can direct emission or recycling.The present invention is few using pharmaceutical quantities, and dehydrating effect is significant, and sludge quantity is big
It is big to reduce.Compared with prior art, processing method of the present invention has a characteristic that
1, in processing method of the present invention, the inorganic agent can inhibit the synthesis of cell wall in conjunction with protein molecule on cell membrane.
The addition of nonylphenol polyoxyethylene ether, improves the dispersibility and activity of inorganic agent when in use, nonylphenol polyoxyethylene ether with
The synergistic effect of triclocarban ensure that the shell-broken effect of inorganic agent.It, can be effective by the synergistic effect of each component in inorganic agent
Dispersion disintegration sludge extracellular polymeric flocculation structure, release the combination water inside wadding body, promote extracellular polymeric
It hydrolyzes and further destroys cell wall.Osmotic shock can accelerate the swelling fracture of fragile cell wall, their synergistic effect
The rupture that can aggravate Microbial Communities in Activated Sludge cell membrane makes the more rapid release of cell inclusion, to realize clasmatosis
Purpose.By the addition of aluminium chloride in present invention processing, the activity and stability of auxiliary agent can be kept, and pass through aluminium chloride
Addition can be further improved broken wall efficiency so that the critical micelle concentration of inorganic agent system reduces, reduce inorganic agent and use
Amount.
2, in processing method of the present invention, using the separation of solid and liquid after magnetic separator progress sludge broken wall, treating capacity is big, stops
Time is short, low energy consumption, while also handling sewage, and water outlet can direct emission or recycling after processing.At Magneto separate
Sludge after reason can greatly save the processing difficulty of subsequent dewatering unit, reduce or without adding Assistant, save medicament
Dosage and do not bring secondary pollution.3, in the method for the present invention, through broken wall-deep dehydration, treated that mud cake is readily transported, mixes
Or molding, it can be used as the raw material that further recycling is conducive to, realize waste utilization.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated, but is not so limited the present invention.
Embodiment 1
Illustrate the specific embodiment of the invention by taking sludge in certain sewage farm excess sludge concentration basin as an example.It is to this kind of moisture content
The triclocarban and 0.25%TS of 0.04%TS sludge (TS is sludge total solids content) are added in 96.35% dehydration excess sludge
The Imipenem of the nonylphenol polyoxyethylene ether of sludge and the aluminium chloride of 0.1%TS sludge and 0.15%TS sludge, is stirred to react
40min is stirred evenly to the EDTA of 2% sludge volume 10mM and 36% sucrose solution of 5% sludge volume is added in treated sludge
20min is rapidly added the ice water of 3 times of sludge volumes, be passed through after equilibration time 30min the charging spout of magnetic separator front end and to its
The middle polymeric aluminum chlorides solution that auxiliary agent 0.2% is added and 0.002% polyacrylamide solution, and the peroxide of 0.5%TS sludge is added
Change hydrogen, stir 30min rear feeding, while feeding the magnetic powder solution that 2wt% concentration is 10%, magnetic separator residence time 5min.Through
Effluent collection after Magneto separate, measurement COD are 47mg/L, meet integrated wastewater discharge standard requirement.Solid after separation is through magnetic
Powder reclaiming device carries out magnetic powder recycling, and separation solid enters stacked sludge dewatering equipment and is further dehydrated, the mud cake after being dehydrated
Moisture content is 44.8%, and abjection water returns to magnetic separator charging spout, and sludge and sewage are handled simultaneously, without secondary pollution.
Embodiment 2
With the excess sludge raw material of embodiment 1, selected treatment process is the same as embodiment 1.The dehydration for being 96.35% to this kind of moisture content
The triclocarban of 0.1%TS sludge and the nonylphenol polyoxyethylene ether and 0.5%TS sludge of 0.8%TS sludge are added in excess sludge
Aluminium chloride and 0.5%TS sludge Meropenem, 40min is stirred to react, to 5% sludge volume is added in treated sludge
36% sucrose solution of the EDTA of 20mM and 5% sludge volume, stir evenly 20min, are rapidly added the ice water of 3 times of sludge volumes, balance
Be passed through after time 30min the charging spout of magnetic separator front end and thereto be added auxiliary agent 0.2% polymeric aluminum chlorides solution and
0.002% polyacrylamide solution, and the hydrogen peroxide of 0.5%TS sludge is added, 30min rear feeding is stirred, is fed simultaneously
The magnetic powder solution that 2wt% concentration is 10%, magnetic separator residence time 5min.Effluent collection after Magneto separate, measurement COD are
46mg/L meets integrated wastewater discharge standard requirement.Solid after separation carries out magnetic powder recycling through magnetic powder recovering device, and separation is solid
Body enters stacked sludge dewatering equipment and is further dehydrated, and moisture content of the cake is 43.4% after being dehydrated, and abjection water returns to Magneto separate
Machine charging spout, sludge and sewage are handled simultaneously, without secondary pollution.
Embodiment 3
With the excess sludge raw material of embodiment 1, selected treatment process is the same as embodiment 1.The dehydration for being 96.35% to this kind of moisture content
The triclocarban of 0.2%TS sludge and the nonylphenol polyoxyethylene ether of 1.6%TS sludge and 1%TS sludge are added in excess sludge
The Panipenem of aluminium chloride and 1%TS sludge, other conditions are the same as embodiment 1.Effluent collection after Magneto separate, measurement COD are
46mg/L meets integrated wastewater discharge standard requirement.Solid after separation carries out magnetic powder recycling through magnetic powder recovering device, and separation is solid
Body enters stacked sludge dewatering equipment and is further dehydrated, and moisture content of the cake is 42.5% after being dehydrated, and abjection water returns to Magneto separate
Machine charging spout, sludge and sewage are handled simultaneously, without secondary pollution.
Embodiment 4
With the excess sludge raw material of embodiment 1, selected treatment process is the same as embodiment 1.The dehydration for being 96.35% to this kind of moisture content
The triclocarban of 0.18%TS sludge and the nonylphenol polyoxyethylene ether and 0.8%TS sludge of 1.2%TS sludge are added in excess sludge
Aluminium chloride and 0.5%TS sludge Imipenem and 0.5%TS sludge Meropenem, other conditions are the same as embodiment 1.Through magnetic
Effluent collection after separation, measurement COD are 45mg/L, meet integrated wastewater discharge standard requirement.Solid after separation is through magnetic powder
Recyclable device carries out magnetic powder recycling, and separation solid enters stacked sludge dewatering equipment and is further dehydrated, and mud cake contains after being dehydrated
Water rate is 41.3%, and abjection water returns to magnetic separator charging spout, and sludge and sewage are handled simultaneously, without secondary pollution.
Embodiment 5
With the excess sludge raw material of embodiment 1, selected treatment process is the same as embodiment 1.The dehydration for being 96.35% to this kind of moisture content
The triclocarban of 0.16%TS sludge and the nonylphenol polyoxyethylene ether and 0.7%TS sludge of 1.5%TS sludge are added in excess sludge
Aluminium chloride and 0.3%TS sludge Imipenem and 0.3%TS sludge Meropenem and 0.3%TS sludge Panipenem,
Other conditions are the same as embodiment 1.Effluent collection after Magneto separate, measurement COD are 44mg/L, meet integrated wastewater discharge standard and want
It asks.Solid after separation carries out magnetic powder recycling through magnetic powder recovering device, and separation solid, which enters stacked sludge dewatering equipment, to carry out into one
Step dehydration, moisture content of the cake is 40.4% after being dehydrated, and abjection water returns to magnetic separator charging spout, and sludge and sewage are handled simultaneously,
It is without secondary pollution.
Comparative example 1
Raw material and method are the same as embodiment 1.But that aluminium chloride, i.e., the dehydration excess sludge for being 96.35% to this kind of moisture content is not added
The imines of the nonylphenol polyoxyethylene ether and 0.15%TS sludge of the middle triclocarban that 0.04%TS sludge is added and 0.25%TS sludge
Training south, other conditions are the same as embodiment 1.Effluent collection after Magneto separate, measurement COD are 64mg/L, and the solid after separation is through magnetic
Powder reclaiming device carries out magnetic powder recycling, and separation solid enters stacked sludge dewatering equipment and is further dehydrated, the mud cake after being dehydrated
Moisture content is 62.9%.
Comparative example 2
Raw material and method are the same as embodiment 2.But without being added nonylphenol polyoxyethylene ether, i.e., to this kind of moisture content be 96.35% it is de-
The Metro of the triclocarban of 0.1%TS sludge and the aluminium chloride of 0.5%TS sludge and 0.5%TS sludge is added in water excess sludge
Training south, other conditions are the same as embodiment 2.Effluent collection after Magneto separate, measurement COD are 64mg/L, and the solid after separation is through magnetic
Powder reclaiming device carries out magnetic powder recycling, and separation solid enters stacked sludge dewatering equipment and is further dehydrated, the mud cake after being dehydrated
Moisture content is 64.5%.
Comparative example 3
Raw material and method are the same as embodiment 3.But it is that triclocarban is not added, i.e., remaining dirty to the dehydration that this kind of moisture content is 96.35%
The Panipenem of the nonylphenol polyoxyethylene ether of 1.6%TS sludge and the aluminium chloride of 1%TS sludge and 1%TS sludge is added in mud,
Other conditions are the same as embodiment 2.Effluent collection after Magneto separate, measurement COD are 68mg/L, and the solid after separation is recycled through magnetic powder
Device carries out magnetic powder recycling, and separation solid enters stacked sludge dewatering equipment and is further dehydrated, the moisture content of the cake after being dehydrated
It is 69.5%.
Comparative example 4
Raw material and method are the same as embodiment 4.But that nonylphenol polyoxyethylene ether and aluminium chloride is not added, i.e., it is to this kind of moisture content
The triclocarban of 0.18%TS sludge and the Imipenem and 0.5%TS of 0.5%TS sludge is added in 96.35% dehydration excess sludge
The Meropenem of sludge, other conditions are the same as embodiment 4.Effluent collection after Magneto separate, measurement COD is 65mg/L, after separation
Solid carry out magnetic powder recycling through magnetic powder recovering device, separation solid enters stacked sludge dewatering equipment and is further dehydrated, warp
Moisture content of the cake is 67.7% after dehydration.
Claims (13)
1. a kind of residual active sludge broken wall Deep dehydration treatment method, the treating method comprises following content:
(1) broken wall homogenization groove is used, is used to receive residual active sludge and inorganic agent, wherein the inorganic agent includes trichlorine card
Class, nonylphenol polyoxyethylene ether, aluminium chloride and auxiliary agent A, are reacted after mixing；EDTA is added into slot after the reaction was completed
And sucrose solution, ice water is added after mixing and is handled, obtains the 1st stream after processing, the auxiliary agent A be Imipenem,
One or more of Meropenem, Panipenem；
(2) magnetic separator is used, is used to receive the 1st stream, auxiliary agent B, magnetic powder and the water treatment agent for coming from step (1), reaction
After separated, the 2nd stream and water are obtained after separation；
(3) magnetic powder recovering device is used, for receiving the 2nd stream obtained from step (2), after the recovered device recycling of magnetic powder
It is recycled, the 3rd stream is obtained after processing；
(4) sludge dewatering equipment is used, is used to receive the 3rd stream obtained from step (3), the 3rd stream is after dehydration
Dehydrated sludge cake and sewage are obtained, sewage returns to magnetic separator, and moisture content of the cake is less than 45%.
2. processing method described in accordance with the claim 1, it is characterised in that: the additional amount and step of auxiliary agent A described in step (1)
(1) weight ratio of the residual active sludge Solid content described in is 1:700~1:100.
3. processing method described in accordance with the claim 1, it is characterised in that: the additional amount of triclocarban described in step (1) with
The weight ratio of residual active sludge Solid content as described in step (1) is 1:3000~1:500.
4. processing method described in accordance with the claim 1, it is characterised in that: nonylphenol polyoxyethylene ether described in step (1)
The weight ratio of additional amount and residual active sludge Solid content as described in step (1) is 1:400~1:60.
5. processing method described in accordance with the claim 1, it is characterised in that: the additional amount and step of aluminium chloride described in step (1)
Suddenly the weight ratio of residual active sludge Solid content described in (1) is 1:1000~1:100.
6. processing method described in accordance with the claim 1, it is characterised in that: EDTA solution concentration described in step (1) be 2~
20mM。
7. processing method described in accordance with the claim 1, it is characterised in that: EDTA solution additional amount described in step (1) is step
Suddenly 1/50~1/10 of residual active sludge volume described in (1).
8. processing method described in accordance with the claim 1, it is characterised in that: the concentration of sucrose solution described in step (1) is
The weight ratio of 33wt%~37wt%, the additional amount of sucrose solution and residual active sludge Solid content as described in step (1) is 1:
30~1:10.
9. processing method described in accordance with the claim 1, it is characterised in that: the volume of ice water described in step (1) is remaining living
1~5 times of property sludge volume.
10. processing method described in accordance with the claim 1, it is characterised in that: step (2) auxiliary agent B is cation polypropylene
One of amide, anionic polyacrylamide, non-ionic polyacrylamide, amphoteric ion polyacrylamide, poly-ferric chloride
Or it is several, the additional amount of auxiliary agent B is 0.002wt%~1wt% of residual active sludge Solid content.
11. processing method described in accordance with the claim 1, it is characterised in that: step (2) the magnetic powder solution is that magnetic powder and water are matched
Manufactured concentration is the magnetic powder solution of 10wt%~20wt%, and the magnetic powder dosage is 1wt%~5wt% of magnetic separator inlet amount.
12. processing method described in accordance with the claim 1, it is characterised in that: step (2) water treatment agent be hydrogen peroxide,
One or more of sodium hypochlorite, calcium hypochlorite, chlorine dioxide, the additional amount and residual active sludge of the water treatment agent are solid
The weight ratio of inclusion is 1:200~1:10.
13. processing method described in accordance with the claim 1, it is characterised in that: step (4) described sludge dewatering equipment is centrifugal dehydration
One or more of machine, plate and frame filter press, stacked sludge dewatering equipment, belt filter press.
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