CN106430878A - Method for conditioning and dewatering sludge of water purifying plant - Google Patents
Method for conditioning and dewatering sludge of water purifying plant Download PDFInfo
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- CN106430878A CN106430878A CN201610994794.7A CN201610994794A CN106430878A CN 106430878 A CN106430878 A CN 106430878A CN 201610994794 A CN201610994794 A CN 201610994794A CN 106430878 A CN106430878 A CN 106430878A
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Classifications
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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
-
- 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
-
- 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
Abstract
The invention discloses a method for conditioning and dewatering sludge of a water purifying plant. The method includes: utilizing ultrasonic waves to smash sludge of the water purifying plant; adding chemical agents to re-flocculate and condition the smashed sludge; mechanically dewatering the conditioned sludge. By the method, dewaterability and settleability of the sludge can be remarkably improved, internal water difficult to remove is converted into free water easy to remove, the sludge is reduced, subsequent transport and treatment costs of the sludge are lowered, and the whole process is simple and easy to implement.
Description
Technical field
The invention belongs to environmental protection technical field, ultrasonic wave precrushing particularly to a kind of conditioning of purification plant sludge and
Flocculate combination dewatering again.
Background technology
China still has more than 95% water treatment plant to adopt conventional " coagulation-precipitation-filtration-sterilization " technique, the mud of generation
Major part is directly discharged in water body nearby, causes the secondary pollution of water body.Purification plant sludge moisture content is about 95%-99.5%,
Moisture content is high, be in flow regime and volume is big, for the ease of transport, processes and recycling, and sludge conditioning and dehydration are dirty
The primary and committed step that mud is processed.Presence in conjunction with water is to cause moisture percentage in sewage sludge to be difficult to the principal element reducing.Wide at present
The mechanical dehydration of general use mainly has vacuum filtering and dewatering, centrifugal dehydration and filter-press dehydration, improves the key of sludge dewatering efficiency
That mud is pre-processed, such as pyrolysis, machinery cracks, ultrasonic wave cracks, ozone oxidation, acidifying, alkaline hydrolysis, alkali and ultrasonic wave connection
Conjunction process, ferment treatment etc., break up the zoogloea in mud, accelerate the dissolution of organic matter in mud, and then promote releasing with reference to water
Put.The comprehensive utilization of ultrasonic pretreatment activated sludge technology includes residual active sludge anaerobic digestion and returnedactivatedsludge
Stealthy growth, this technology is widely used.After activated sludge is ultrasonically treated, its water content can be reduced and add
Its anaerobic digestion speed fast, makes the sludge volume of mechanical dehydration greatly reduce, the harmful levels of pathogens of mud is also eliminated in a large number, plays
Minimizing and the effect of stabilisation.Ul-trasonic irradiation when mud, can recombinate by sludge structure, and in mud, the existence form of water can change
Become, the free water content easily removing in sludge media improves, the extracellular polymeric in mud（Predominantly protein, polysaccharide and core
Acid）Can discharge with intracellular organic matter, finally change dehydration property and settleability.Research shows, dehydration property and settleability
The dissolution component of change and extracellular polymeric and content, and mud particle diameter is closely related with surface charge.Ultrasonication condition
There is a critical value in the improvement to the dehydration property of mud, all poor above or below the dehydration property of this critical value mud.
Purification plant sludge and Sewage Plant activated sludge have very very much not at aspects such as physics, chemical property and microbial populations
With, and discrete after ultrasonication, broken mud flco particle diameter, stripping material content and property there occurs change, these changes
Change the impact to purification plant sludge dehydration property and settleability to be still not clear.Traditional chemical coagulation conditioning dewatering（By throwing
Plus the mode of chemical agent and mechanical dehydration）It is difficult to effectively destroy the structure of extracellular polymeric in mud it is impossible to effectively by it
Middle combination water discharges.Under conditions of coagulation chemical agent flocculates again, broken mud micro-floccule or particle and release
Extracellular polymeric to liquid phase and intracellular organic matter can reassemble, and can further improve dehydration property and the settleability of mud.
Content of the invention
The invention provides the combination dehydration side that a kind of ultrasonic wave precrushing of purification plant sludge conditioning and coagulation flocculate again
Method, purification plant sludge is improved dehydration property and the sedimentation of mud by the way of flocculating by coagulation after ultrasonic technology crushes again
Property.
The technical solution adopted in the present invention is：A kind of for purification plant sludge conditioning dehydration method it is characterised in that
Comprise the following steps：
Step 1：Using ultrasonic disruption purification plant sludge；
Step 2：Add chemical agent, conditioning that broken mud is flocculated again；
Step 3：Mechanical dehydration is carried out to the mud after conditioning.
Preferably, in step 1 adopt ultrasound reactor be groove type ultrasonic ripple reactor, probe type ultrasonic reaction
Device or parallel-plate near field formula ultrasound reactor, the ultrasonic disruption time is 10 ~ 30min.
Preferably, described groove type ultrasonic ripple reactor, the transducer of reactor is arranged on reactive tank surrounding, and frequency is a1
kHz、a2kHz、a3KHz and a4KHz, wherein a1、a2、a3、a4Value be 25,40,68,80,100,125 or 160,
Totally 98 kinds of combination of frequency forms；The input power of reactor is 0 ~ 450W, continuously adjustabe, and acoustic density is 23.3 ~ 30.0W/L.
Preferably, described probe type ultrasonic reactor, reactor frequency is b kHz, and the value of b is 25 or 40, sound
Can density be 300 ~ 500W/L；Pop one's head in ultrasonic procedure from sludge interface 2.0 ~ 2.5cm.
Preferably, the magnetic stirring speed of described probe type ultrasonic reactor is 250 ~ 310rpm.
Preferably, described parallel-plate near field formula ultrasound reactor, on the upside of parallel-plate in reactor, frequency is c1KHz,
c1Value be 25,40,68 or 100；On the downside of parallel-plate, frequency is c2KHz, c2Value be 68,100,125 or 160；Up and down
Side constitutes the ultrasonic reverberation field of 225 kinds of frequency form；Acoustic density is 0 ~ 500W/L.
Preferably, chemical agent described in step 2 be coagulant, coagulant and flocculation aid composition or coagulant with
Oxidizing agent composition.
Preferably, described coagulant is aluminum sulfate, aluminium chloride, iron chloride, aluminium polychloride or bodied ferric sulfate；Described
Flocculation aid is quick lime, watery hydrochloric acid, activated silicic acid or polyacrylamide；Described oxidant is potassium permanganate, permanganate is combined
Medicament, ozone or calper calcium peroxide.
Preferably, conditioning of flocculating again described in step 2, first mixing 0.5 ~ 1 min is quickly stirred with 200 ~ 300rpm,
Then add chemical agent, then 15 ~ 20 min that flocculate again are stirred with 50 ~ 80rpm, finally staticly settle 25 ~ 30min.
Preferably, the dosage of described chemical agent is according to the determination of mud TSS mass, the chemical agent adding and mud
TSS mass concentration ratio is 0.5% ~ 1%.
It is remarkably improved dehydration property and the settleability of mud using the method for purification plant sludge conditioning in the present invention, will be difficult de-
The internal water removed is converted into the Free water of easy removing, realizes the minimizing of mud, the cost reduce follow-up mud transport, processing.
Whole technological process is simple, it is easy to accomplish.
Brief description
The flow chart of accompanying drawing 1 embodiment of the present invention.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, below in conjunction with the accompanying drawings and embodiment is to this
Bright be described in further detail it will be appreciated that described herein enforcement example be merely to illustrate and explain the present invention, not
For limiting the present invention.
Ask for an interview Fig. 1, the ultrasonic wave precrushing of a kind of purification plant sludge conditioning that the present invention provides and the group that coagulation flocculates again
Close dewatering, comprise the following steps：
Step 1：Using ultrasonic disruption purification plant sludge；
First-selection takes water treatment plant's mud sample mud total suspended solid（TSS）For 1000 ~ 2000mg/L, moisture content more than 98%.Ultrasonic wave is anti-
Answer device to be groove type ultrasonic ripple reactor, probe type ultrasonic reactor or parallel-plate near field formula ultrasound reactor, ultrasonic wave breaks
The broken time is 10 ~ 30min.The temperature of non-conditioning of mud and pH value during ultrasonication.
The groove type ultrasonic ripple reactor of the present embodiment, the transducer of reactor is arranged on reactive tank surrounding, and frequency is a1, a2,
a3And a4kHz (a1, a2, a3, a4Value be 25,40,68,80,100,125 and 160kHz), totally 98 kinds of combination of frequency forms.
Input power is 0 ~ 450W continuously adjustabe, and acoustic density is 23.3 ~ 30.0W/L.
The probe type ultrasonic reactor of the present embodiment, reactor frequency is b（The value of b is 25,40kHz）, acoustic energy is close
Spend for 300 ~ 500W/L；Pop one's head in ultrasonic procedure from sludge interface 2.0 ~ 2.5cm；For avoiding sludge settling to liquid storage trench bottom,
Magnetic stirring speed is 250 ~ 310rpm.
The parallel-plate near field formula ultrasound reactor of the present embodiment, on the upside of parallel-plate in reactor, frequency is c1（c1Value
For 25,40,68 and 100kHz）, on the downside of parallel-plate, frequency is c2（c2Value be 68,100,125 and 160kHz）, upper and lower sides structure
Become the ultrasonic reverberation field of 225 kinds of frequency form.Acoustic density is 0 ~ 500W/L.
The ultrasound reactor of the present embodiment is provided with ultrasonic frequency and adjusts button, power stepless regulation button and timing
Device settings button.Frequency can be adjusted by the frequency digital display button on ultrasonic equipment control panel, and acoustic density passes through control
On panel processed, controlling, the broken time can be set by the timer on control panel for power adjusting button and ultrasonically treated sludge volume
Put.
Step 2：Add chemical agent, conditioning that broken mud is flocculated again；
The chemical agent of the present embodiment can be coagulant, or coagulant and flocculation aid, or coagulant and oxidant.
The coagulant of the present embodiment can be aluminum sulfate, aluminium chloride, iron chloride, aluminium polychloride, bodied ferric sulfate or its
One of his coagulant；Flocculation aid can be a kind of in quick lime or watery hydrochloric acid, activated silicic acid, polyacrylamide etc.；Oxidation
Agent can be one of potassium permanganate, permanganate composite chemical, ozone and calper calcium peroxide.
The coagulation program that the ultrasonication mud of the present embodiment flocculates again quickly stirs mixing 0.5 ~ 1 for 200 ~ 300rpm
Min, adds chemical agent；Then 15 ~ 20 min that flocculate again are stirred with 50 ~ 80rpm；Finally staticly settle 25 ~ 30min.
The dosage of the chemical agent of the present embodiment is according to the determination of mud TSS mass, the chemical agent adding and mud TSS
Mass concentration ratio is 0.5% ~ 1%.
Step 3：Mechanical dehydration is carried out to the mud after conditioning, the moisture percentage in sewage sludge after mechanical dehydration can be down to 42 ~ 50%.
The present invention passes through laboratory a large amount of static test research, compares different ultrasonic wave precrushing conditions（Ultrasonic wave is anti-
Answer device device type, combination of frequency, acoustic density, ultrasonication time and sludge characteristics）Lower dehydration property（Use specific drainage pressure
SRF and capillary water absorbing time CST is characterizing）And settleability（Characterized with sludge volume index SVI）Change, and by throw
Plus chemical agent flocculates the innovation the method to be described for the reduction to improve the dehydration property of mud and settleability and moisture content again
Property and superiority.Lift 13 example explanation specific embodiments, but scope of the presently claimed invention is not limited thereto.
Embodiment one：Using the method in the present invention, first former for 15L mud is put into 250 mm (length) × 250 mm
Carry out the precrushing of mud, groove type reactor surrounding transducer in the groove type ultrasonic ripple reactor of (wide) × 300 mm (high)
Ultrasonic frequency be 25kHz, 40kHz, 68kHz and 100kHz.Only open frequency is the transducer of 25kHz, and acoustic density is adjusted
Save and be set as 10min for 23.3 ~ 30.0W/L, ultrasonic time, in ultrasonic procedure, agitator speed is 250rpm, does not adjust dirt
The temperature of mud and pH value.Then, carry out broken mud floc test again using six static agitation, by 800mL ultrasonic disruption
Mud adds to 1L beaker, sets coagulation whipping procedure and quickly stirs mixing 0.5min as 200rpm, adds aluminum sulfate, its throwing
Dosage is 5mg/L；Then 15 min that flocculate again are stirred with 50rpm；Finally staticly settle 25min.Finally, by the mud after conditioning
Carry out filter-press dehydration.
Test purification plant sludge TSS is 1.00g/L, and SVI is 110.4 ± 0.37mL/g, average SRF value for 18.58 ×
1012M/kg, average CST value is 17.6s, and moisture percentage in sewage sludge is 98.8%.It is 23.3 ~ 30.0W/L, ultrasonic time in acoustic density
During for 10min, the SRF value of ultrasonication mud is 21.16 × 1012M/kg, CST value is 23.3s, and SVI value is 121.5mL/g,
Deteriorate with respect to raw sewage dehydration property, settleability is slightly improved.After flocculating again, the SRF value of mud for 14.02 ×
1012M/kg, CST value is 14.8s, and SVI value is 138.2mL/g, all significantly improves with respect to raw sewage dehydration property and settleability.?
Afterwards the mud after conditioning is carried out filter-press dehydration, moisture percentage in sewage sludge is down to 50%.
The operation principle of the present invention is the extracellular polymeric making through ultrasonication in mud（Predominantly protein, polysaccharide
And nucleic acid）Discharge with intracellular organic matter so as in hydrone constantly accelerate, rotate, mutually colliding, make mud
Zeta potential, surface electric double layer structure are destroyed.In the presence of coagulation flocculates again, broken mud micro-floccule or particle,
And the extracellular polymeric discharging to liquid phase and intracellular organic matter can reassemble, improve dehydration property and the sedimentation of mud further
Property, finally by press filtration, moisture content is reduced.
Embodiment two：This embodiment from unlike embodiment one：The ultrasonic frequency opened is 40kHz,
The chemical agent adding is coagulant polymeric aluminium chloride and oxidant calper calcium peroxide, and its dosage is respectively 10mg/L and 2.5mg/
L.Other steps are identical with embodiment one with parameter.
Embodiment three：This embodiment from unlike embodiment one：The ultrasonic frequency opened is combined as 25/
40kHz, other steps are identical with embodiment one with parameter.
Embodiment four：This embodiment from unlike embodiment one：The ultrasonic frequency opened is combined as 25/
40/68kHz, other steps are identical with embodiment one with parameter.
Embodiment five：This embodiment from unlike embodiment one：The ultrasonic frequency opened is combined as 25/
40/68/100kHz, other steps are identical with embodiment one with parameter.
Embodiment six：Using the method in the present invention, former for 100mL mud is put in glass container, carry out sonde-type first
Ultrasonic wave precrushing, ultrasonic frequency is 25kHz, and acoustic density is 300 ~ 500W/L, effect 20min, pops one's head in ultrasonic procedure
From sludge interface 2.0cm, magnetic stirring apparatus rotating speed is 250rpm, does not have temperature and the pH value of conditioning of mud.Then, using six
Static agitation carries out broken mud floc test again, and 800mL ultrasonic disruption mud is added to 1L beaker, sets coagulation and stirs
Program of mixing is that 300rpm quickly stirs mixing 1 min, adds ferric trichloride, its dosage is 14.08mg/L；Then with 50rpm
Stir 15 min that flocculate again；Finally staticly settle 30min.Finally, the mud after conditioning is carried out filter-press dehydration.
Test purification plant sludge TSS is 1.57g/L, and SVI is 110.4 ± 0.37mL/g, average SRF value for 17.92 ×
1012M/kg, average CST value is 20.8s.Acoustic density be 300W/L, ultrasonic time be 20min when, ultrasonication mud
SRF value is 20.25 × 1012M/kg, CST value is 25.3s, and SVI value is 120.3mL/g, has disliked with respect to raw sewage dehydration property
Change, settleability is slightly improved.After flocculating, the SRF value of mud is 13.25 × 10 again12M/kg, CST value is 16.8s, SVI value
For 140.3mL/g, all significantly improve with respect to raw sewage dehydration property and settleability.Acoustic density be 500W/mL, ultrasonic time
During for 20min, the SRF value of ultrasonication mud is 22.13 × 1012M/kg, CST value is 28.3s, and SVI value is 138.3mL/g,
Substantially deteriorate with respect to raw sewage dehydration property, settleability is slightly improved.After flocculating again, the SRF value of mud for 13.75 ×
1012M/kg, CST value is 15.8s, and SVI value is 151.3mL/g, all significantly improves with respect to raw sewage dehydration property and settleability.?
Afterwards the mud after conditioning is carried out filter-press dehydration, moisture percentage in sewage sludge is down to 45%.
Embodiment seven：This embodiment from unlike embodiment six：The ultrasonic frequency opened is 40kHz,
Other steps are identical with embodiment six with parameter.
Embodiment eight：Using the method in the present invention, initially with parallel-plate near field formula ultrasound reactor by mud
Broken, on the upside of parallel-plate, frequency is 25kHz, and downside frequency is 68kHz, enters the speed of reactor by conditioning of mud pump, makes
The ultrasonication time is 15min, and control acoustic density is 300W/L, does not have temperature and the pH value of conditioning of mud in ultrasonic procedure.
Then, carry out broken mud floc test again using six static agitation, 800mL ultrasonic disruption mud is added to 1L beaker
In, set coagulation whipping procedure and quickly stir mixing 1 min as 300rpm, add aluminium chloride and polyacrylamide, its dosage
It is respectively 8.0mg/L and 4mg/L；Then 20 min that flocculate again are stirred with 60rpm；Finally staticly settle 30min.Finally, will adjust
Mud after reason carries out filter-press dehydration.
Test purification plant sludge TSS is 2.00g/L, and SVI is 106.4 ± 0.11mL/g, average SRF value for 16.65 ×
1012M/kg, average CST value is 19.8s.Acoustic density be 250W/L, ultrasonic time be 10min when, aluminium chloride and polypropylene
Acid amides, after its dosage is respectively 8.0mg/L and 4mg/L and filter-press dehydration, the SRF value of mud is 12.25 × 1012M/kg,
CST value is 13.3s, and SVI value is 146.3mL/g, and moisture percentage in sewage sludge is down to 42%.
Embodiment nine：This embodiment from unlike embodiment eight：The ultrasonic frequency opened is combined as 25/
40/68kHz, other steps are identical with embodiment eight with parameter.
Embodiment ten：This embodiment from unlike embodiment eight：The ultrasonic frequency opened is combined as 25/
68/100kHz, other steps are identical with embodiment eight with parameter.
Embodiment 11：This embodiment from unlike embodiment eight：The ultrasonic frequency opened is combined as
25/40/68/68kHz, other steps are identical with embodiment eight with parameter.
Embodiment 12：This embodiment from unlike embodiment eight：The ultrasonic frequency opened is combined as
25/68/100/160kHz, other steps are identical with embodiment eight with parameter.
Embodiment 13：This embodiment from unlike embodiment eight：The ultrasonic frequency opened is combined as
25/40/68/100/68/100/125/160kHz, other steps are identical with embodiment eight with parameter.
It should be appreciated that the part that this specification does not elaborate belongs to prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The restriction of invention patent protection scope, those of ordinary skill in the art, under the enlightenment of the present invention, is weighing without departing from the present invention
Profit requires under protected ambit, can also make replacement or deform, each fall within protection scope of the present invention, this
Bright scope is claimed should be defined by claims.
Claims (10)
1. a kind of method for purification plant sludge conditioning dehydration is it is characterised in that comprise the following steps：
Step 1：Using ultrasonic disruption purification plant sludge；
Step 2：Add chemical agent, conditioning that broken mud is flocculated again；
Step 3：Mechanical dehydration is carried out to the mud after conditioning.
2. according to claim 1 for purification plant sludge conditioning dehydration method it is characterised in that：Adopt in step 1
Ultrasound reactor be groove type ultrasonic ripple reactor, probe type ultrasonic reactor or parallel-plate near field formula ultrasonic response
Device, the ultrasonic disruption time is 10 ~ 30min.
3. according to claim 2 for purification plant sludge conditioning dehydration method it is characterised in that：Described groove type ultrasonic
Ripple reactor, the transducer of reactor is arranged on reactive tank surrounding, and frequency is a1kHz、a2kHz、a3KHz and a4KHz, its
Middle a1、a2、a3、a4Value be 25,40,68,80,100,125 or 160, totally 98 kinds of combination of frequency forms；Reactor defeated
Entering power is 0 ~ 450W, continuously adjustabe, and acoustic density is 23.3 ~ 30.0W/L.
4. according to claim 2 for purification plant sludge conditioning dehydration method it is characterised in that：Described sonde-type surpasses
Sound wave reactor, reactor frequency is b kHz, and the value of b is 25 or 40, and acoustic density is 300 ~ 500W/L；In ultrasonic procedure
Pop one's head in from sludge interface 2.0 ~ 2.5cm.
5. according to claim 4 for purification plant sludge conditioning dehydration method it is characterised in that：Described sonde-type surpasses
The magnetic stirring speed of sound wave reactor is 250 ~ 310rpm.
6. according to claim 2 for purification plant sludge conditioning dehydration method it is characterised in that：Described parallel-plate is near
Field formula ultrasound reactor, on the upside of parallel-plate in reactor, frequency is c1KHz, c1Value be 25,40,68 or 100；Parallel-plate
Downside frequency is c2KHz, c2Value be 68,100,125 or 160；Upper and lower sides constitute the ultrasonic reverberation of 225 kinds of frequency form
?；Acoustic density is 0 ~ 500W/L.
7. according to claim 1 for purification plant sludge conditioning dehydration method it is characterised in that：Described in step 2
Chemical agent is coagulant, coagulant and flocculation aid composition or coagulant and oxidizing agent composition.
8. according to claim 7 for purification plant sludge conditioning dehydration method it is characterised in that：Described coagulant is
Aluminum sulfate, aluminium chloride, iron chloride, aluminium polychloride or bodied ferric sulfate；Described flocculation aid is quick lime, watery hydrochloric acid, activation silicon
Acid or polyacrylamide；Described oxidant is potassium permanganate, permanganate composite chemical, ozone or calper calcium peroxide.
9. according to claim 1-8 any one for purification plant sludge conditioning dehydration method it is characterised in that：Step
Flocculate again described in rapid 2 conditioning, first mixing 0.5 ~ 1 min is quickly stirred with 200 ~ 300rpm, then add chemical agent, so
Afterwards 15 ~ 20 min that flocculate again are stirred with 50 ~ 80rpm, finally staticly settle 25 ~ 30min.
10. according to claim 1-8 any one for purification plant sludge conditioning dehydration method it is characterised in that：
The dosage of described chemical agent determines according to mud TSS mass, and the chemical agent adding with mud TSS mass concentration ratio is
0.5%~1%.
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| CN108101323A (en) * | 2018-01-05 | 2018-06-01 | 中冶华天南京工程技术有限公司 | It is ultrasonically treated the technique of municipal wastewater excess sludge |
| CN108863013A (en) * | 2017-05-12 | 2018-11-23 | 中国石油化工股份有限公司 | Containing poly- Sludge by Ultrasonic processing unit and method |
| CN110104936A (en) * | 2018-01-30 | 2019-08-09 | 辽宁德智环保技术有限公司 | The method of nano polyaluminium chloride processing fermented sludge |
| CN110228935A (en) * | 2019-06-28 | 2019-09-13 | 湖南北控威保特环境科技股份有限公司 | A kind of sludge dewatering pretreatment unit and method |
| EP3539932A1 (en) * | 2018-03-16 | 2019-09-18 | Ulrich Kubinger | Method for optimizing the dewatering of sludge from a biological purification process |
| CN111499144A (en) * | 2020-04-25 | 2020-08-07 | 煤科集团杭州环保研究院有限公司 | River sludge pollution control conditioning device and method |
| EP3795543A1 (en) * | 2019-09-20 | 2021-03-24 | Ulrich Kubinger | Method for optimizing the dewatering of sludge comprising microorganisms |
| CN112723705A (en) * | 2020-12-30 | 2021-04-30 | 山东大学 | Method for using sludge subjected to calcium-increasing drying pretreatment as main raw material and fuel for cement production |
| CN114477673A (en) * | 2022-01-21 | 2022-05-13 | 中铁水利水电规划设计集团有限公司 | River sludge resource utilization treatment method |
| CN115432902A (en) * | 2022-09-15 | 2022-12-06 | 江南大学 | Method for improving sludge dehydration rate by using combined physical field |
| EP3567013B1 (en) * | 2018-05-11 | 2022-12-14 | Ulrich Kubinger | Sludge conditioning agent and process for optimizing the dewatering of sludge |
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Cited By (14)
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| CN108863013A (en) * | 2017-05-12 | 2018-11-23 | 中国石油化工股份有限公司 | Containing poly- Sludge by Ultrasonic processing unit and method |
| CN108101323A (en) * | 2018-01-05 | 2018-06-01 | 中冶华天南京工程技术有限公司 | It is ultrasonically treated the technique of municipal wastewater excess sludge |
| CN110104936A (en) * | 2018-01-30 | 2019-08-09 | 辽宁德智环保技术有限公司 | The method of nano polyaluminium chloride processing fermented sludge |
| EP3539932A1 (en) * | 2018-03-16 | 2019-09-18 | Ulrich Kubinger | Method for optimizing the dewatering of sludge from a biological purification process |
| EP3567013B1 (en) * | 2018-05-11 | 2022-12-14 | Ulrich Kubinger | Sludge conditioning agent and process for optimizing the dewatering of sludge |
| CN110228935A (en) * | 2019-06-28 | 2019-09-13 | 湖南北控威保特环境科技股份有限公司 | A kind of sludge dewatering pretreatment unit and method |
| EP3795543A1 (en) * | 2019-09-20 | 2021-03-24 | Ulrich Kubinger | Method for optimizing the dewatering of sludge comprising microorganisms |
| AT523008A1 (en) * | 2019-09-20 | 2021-04-15 | Kubinger Dr Ulrich | Process for optimizing the dewatering of sludge containing microorganisms |
| AT523008B1 (en) * | 2019-09-20 | 2021-11-15 | Kubinger Dr Ulrich | Process for optimizing the dewatering of sludge containing microorganisms |
| CN111499144B (en) * | 2020-04-25 | 2022-02-11 | 煤科集团杭州环保研究院有限公司 | River sludge pollution control conditioning device and method |
| CN111499144A (en) * | 2020-04-25 | 2020-08-07 | 煤科集团杭州环保研究院有限公司 | River sludge pollution control conditioning device and method |
| CN112723705A (en) * | 2020-12-30 | 2021-04-30 | 山东大学 | Method for using sludge subjected to calcium-increasing drying pretreatment as main raw material and fuel for cement production |
| CN114477673A (en) * | 2022-01-21 | 2022-05-13 | 中铁水利水电规划设计集团有限公司 | River sludge resource utilization treatment method |
| CN115432902A (en) * | 2022-09-15 | 2022-12-06 | 江南大学 | Method for improving sludge dehydration rate by using combined physical field |
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