CN106630542A - Flocculant for treating slurry, preparation method and slurry treatment method - Google Patents
Flocculant for treating slurry, preparation method and slurry treatment method Download PDFInfo
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- CN106630542A CN106630542A CN201611068845.XA CN201611068845A CN106630542A CN 106630542 A CN106630542 A CN 106630542A CN 201611068845 A CN201611068845 A CN 201611068845A CN 106630542 A CN106630542 A CN 106630542A
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- flocculant
- mud
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- corallite
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a flocculant for treating waste drilling sludge. The flocculant comprises the following components in mass percent: 20 to 27 percent of kaolin, 14 to 34 percent of corallite, 6 to 22 percent of kieselguhr, 6 to 17 percent of gypsum, 2 to 14 percent of coal ash, 4 to 9 percent of blast furnace slag, and 6 to 20 percent of cationic polyacrylamide, wherein the sum of the mass percent of the components is 100 percent. The invention further discloses a preparation method of the flocculant for treating waste drilling sludge and a method for treating waste drilling sludge. The preparation method of the flocculant comprises the following steps: separately grinding and screening the weighed kaolin, corallite, kieselguhr, gypsum, coal ash and blast furnace slag, so as to obtain powder with the grain sizes not greater than 48 micrometers, and sufficiently mixing the powder with the cationic polyacrylamide, so as to obtain the flocculant for treating waste drilling sludge. The method for treating waste drilling sludge comprises the following steps: adding the flocculant into the waste drilling sludge according to the mass ratio of 713 to 1036:1, performing blending with a blender while the flocculant is added until alumen ustum occurs in the waste drilling sludge, blending for 30 seconds after the stabilization, stopping blending, and leaving the waste drilling sludge to stand for 2 to 3 minutes, so as to obtain liquid in the upper and middle layers and flocculated concentrated slurry in the lower layer to accomplish the treatment.
Description
Technical field
The invention belongs to environment and municipal technical field, are related to a kind of flocculant of process discarded slurry, the present invention is also related to
And the method for the preparation method and process mud of the flocculant of the process discarded slurry.
Background technology
Generally using bored pile foundation or construction of diaphragm wall during subway, bridge and high-building construction
Mode.But during drilling or grooving, need to carry out retaining wall using mud.Hole to be drilled or grooving operation complete with
Afterwards, having a large amount of mud residues becomes discarded slurry.
Discarded slurry moisture content is high, various additives are used so that its composition is also extremely complex, and directly discharge is understood to ring
Cause severe contamination in border.At present conventional mud conditioning mode has physics mode (such as centrifugation or press filtration), chemical treatment side
Formula (such as flocculation sediment and chemosetting), in addition with the united mode of physical-chemical (as first carried out being carried out again after chemical flocculation
Press filtration).Its objective is the mud-water separation that discarded slurry is made by various methods, the target of minimizing is realized, consequently facilitating clearing
Or comprehensive utilization.In practice, chemical flocculation and physical compression integrated processes are best to the effect of dumping mud treatment,
It is most widely used, wherein topmost need a kind of flocculant for discarded slurry of constructing.
At present existing flocculant is broadly divided into inorganic flocculating agent, organic polymer coargulator and biological flocculant.These
Flocculant is primarily directed to the flocculation research and development of water treatment procedure, is mainly used in the flocculation sediment of particulate matter in water treatment procedure,
Also partial flocculation agent have for the flocculation sediment of excess sludge in sewage disposal process.But either in water process
Flocculation or the flocculation of excess sludge have very big difference with the flocculation sediment of mud, and existing flocculant was separated in flocculation of sludge
Effect on driving birds is not good in journey.
In consideration of it, developing a kind of flocculant for construction discarded slurry, mud-water separation can be reached to mud rapid flocculation
Effect, while meeting mud harmless treatment process, it is very necessary to solve a mud conditioning difficult problem.
The content of the invention
It is an object of the invention to provide a kind of flocculant for processing discarded slurry, effectively can enter construction discarded slurry
Row mud-water separation.
It is a further object to provide the preparation method of the flocculant of above-mentioned process discarded slurry and process mud
The method of slurry.
First technical scheme of the present invention be：A kind of flocculant for processing discarded slurry, by mass percentage
It is composed of the following components：Kaolin 20-27%, corallite 14-34%, diatomite 6-22%, gypsum 6-17%, coal ash 2-
14%th, the polyacrylamide 6-20% of blast furnace slag 4-9%, cationic, the mass percent sum of above-mentioned each component is
100%.
Second technical scheme being taken of the present invention be：A kind of preparation method of the flocculant for processing discarded slurry, tool
Body is implemented according to following steps：
Step 1, weighs respectively by mass percentage kaolin 20-27%, corallite 14-34%, diatomite 6-22%, stone
Cream 6-17%, coal ash 2-14%, blast furnace slag 4-9%, the polyacrylamide 6-20% of cationic, the quality hundred of above-mentioned each component
It is 100% to divide than sum；
Step 2, the kaolin weighed in step 1, corallite, diatomite and gypsum, coal ash and blast furnace slag are ground respectively
Screening obtains the powder that particle diameter is not more than 48 μm；
Step 3, the polyacrylamide of the cationic that the powder that step 2 is obtained is weighed with step 1 is sufficiently mixed, and obtains
Process the flocculant of discarded slurry.
The third technical scheme for being taken of the present invention is：A kind of side of the flocculant process mud for processing discarded slurry
Method, specifically implements according to following steps：
Step 1, it is 713-1036 that flocculant is pressed into discarded slurry with the mass ratio of flocculant：1 is added in discarded slurry,
Flocculant is added while being stirred with mixer, alumen ustum occurs into discarded slurry；
Step 2, is stirred for 30 seconds after the alumen ustum in step 1 is stable, stops stirring, stands 2-3 minutes, obtains at the middle and upper levels
Liquid and lower floor flocculation after concentration mud, so far dumping mud treatment complete.
The characteristics of the third technical scheme that the present invention is taken, also resides in,
The rotating speed of mixer is 300-450r/min in step 1.
The invention has the beneficial effects as follows：A kind of flocculant of process discarded slurry of the present invention can be in dumping mud treatment
During play preferable mud-water separation effect, while construction discarded slurry rapid flocculation can be made, process residence time is significantly
Shorten, reduce processing procedure mud amount of storage, reduce the load of processing system.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
The invention provides a kind of flocculant for processing discarded slurry, composed of the following components by mass percentage：Kaolinite
Native 20-27%, corallite 14-34%, diatomite 6-22%, gypsum 6-17%, coal ash 2-14%, blast furnace slag 4-9%, cation
The polyacrylamide 6-20% of type, the mass percent sum of above-mentioned each component is 100%.
The preparation method of the flocculant of above-mentioned process discarded slurry, specifically implements according to following steps：
Step 1, weighs respectively by mass percentage kaolin 20-27%, corallite 14-34%, diatomite 6-22%, stone
Cream 6-17%, coal ash 2-14%, blast furnace slag 4-9%, the polyacrylamide 6-20% of cationic, the quality hundred of above-mentioned each component
It is 100% to divide than sum；
Step 2, the kaolin weighed in step 1, corallite, diatomite and gypsum, coal ash and blast furnace slag are ground respectively
Screening obtains the powder that particle diameter is not more than 48 μm；
Step 3, the polyacrylamide of the cationic that the powder that step 2 is obtained is weighed with step 1 is sufficiently mixed, and obtains
Process the flocculant of discarded slurry.
The method of the flocculant process mud of above-mentioned process discarded slurry, specifically implements according to following steps：
Step 1, it is 713-1036 that flocculant is pressed into discarded slurry with the mass ratio of flocculant：1 is added in discarded slurry,
Add flocculant and stirred with the rotating speed of 300-450r/min while using mixer, alumen ustum occur into discarded slurry；
Step 2, is stirred for 30 seconds after the alumen ustum in step 1 is stable, stops stirring, stands 2-3 minutes, obtains at the middle and upper levels
Liquid and lower floor flocculation after concentration mud, so far dumping mud treatment complete.
Embodiment 1
Weigh kaolin 20%, corallite 20%, diatomite 16%, gypsum 10%, coal ash respectively by mass percentage
14%, blast furnace slag 6.7%, respectively grinding screening obtains the powder that particle diameter is not more than 48 μm, the cationic poly third with 13.3%
Acrylamide be sufficiently mixed after with mass ratio as 1：713 are added in clay mortar, add flocculant while use mixer with
, there is alumen ustum into spent clay slurry in the rotating speed stirring of 300-450r/min；It is stirred for 30 seconds after alumen ustum is stable, stops stirring, it is quiet
2-3 minutes are put, liquid at the middle and upper levels and the concentration mud after lower floor's flocculation is obtained.
Embodiment 2
Weigh kaolin 24%, corallite 23%, diatomite 16%, gypsum 17%, coal ash respectively by mass percentage
7%, blast furnace slag 7%, respectively grinding screening obtains the powder that particle diameter is not more than 48 μm, the cationic-type polyacrylamide with 6%
With mass ratio as 1 after being sufficiently mixed：713 are added in clay mortar, add flocculant while using mixer with 300-
, there is alumen ustum into clay mortar in the rotating speed stirring of 450r/min；It is stirred for 30 seconds after alumen ustum is stable, stops stirring, stands 2-3
Minute, obtain liquid at the middle and upper levels and the concentration mud after lower floor's flocculation.
Embodiment 3
Weigh kaolin 20%, corallite 26.7%, diatomite 14%, gypsum 6%, coal ash respectively by mass percentage
8%, blast furnace slag 5.3%, respectively grinding screening obtains the powder that particle diameter is not more than 48 μm, the cationic polyacrylamide with 20%
Amine be sufficiently mixed after with mass ratio as 1：713 are added in clay mortar, add flocculant while using mixer with 300-
, there is alumen ustum into clay mortar in the rotating speed stirring of 450r/min；It is stirred for 30 seconds after alumen ustum is stable, stops stirring, stands 2-3
Minute, obtain liquid at the middle and upper levels and the concentration mud after lower floor's flocculation.
Embodiment 4
Weigh kaolin 22%, corallite 14%, diatomite 22%, gypsum 14%, coal ash respectively by mass percentage
12%, blast furnace slag 9%, respectively grinding screening obtains the powder that particle diameter is not more than 48 μm, the cationic-type polyacrylamide with 7%
With mass ratio as 1 after being sufficiently mixed：1036 are added in sodium bentonite mud, add flocculant while use mixer with
, there is alumen ustum into sodium bentonite mud in the rotating speed stirring of 300-450r/min；It is stirred for 30 seconds after alumen ustum is stable, stops stirring
Mix, stand 2-3 minutes, obtain liquid at the middle and upper levels and the concentration mud after lower floor's flocculation.
Embodiment 5
Weigh kaolin 23%, corallite 23%, diatomite 20%, gypsum 6.7%, coal ash respectively by mass percentage
8%, blast furnace slag 6%, respectively grinding screening obtains the powder that particle diameter is not more than 48 μm, the cationic polyacrylamide with 13.3%
Amine be sufficiently mixed after with mass ratio as 1：787 are added in sodium bentonite mud, add flocculant while using mixer
Stirred with the rotating speed of 300-450r/min, alumen ustum occur into sodium bentonite mud；It is stirred for 30 seconds after alumen ustum is stable, stops
Stirring, stands 2-3 minutes, obtains liquid at the middle and upper levels and the concentration mud after lower floor's flocculation.
Embodiment 6
Weigh kaolin 27% respectively by mass percentage, corallite 34%, diatomite 6%, gypsum 13%, coal ash 2%,
Blast furnace slag 4%, respectively grinding screening obtains the powder that particle diameter is not more than 48 μm, and the cationic-type polyacrylamide with 14% is abundant
With mass ratio as 1 after mixing：877 are added in sodium bentonite mud, add flocculant while using mixer with 300-
, there is alumen ustum into sodium bentonite mud in the rotating speed stirring of 450r/min；It is stirred for 30 seconds after alumen ustum is stable, stops stirring,
2-3 minutes are stood, liquid at the middle and upper levels and the concentration mud after lower floor's flocculation is obtained.
The clay mortar Flocculation Results of table 1
| Embodiment | Flocculant quality | Released state | Quality of mud fluid | Supernatant quality |
| --- | Before flocculation separation | 107kg | 0 | |
| Embodiment 1 | 150g | After flocculation separation | 83kg | 24kg |
| Embodiment 2 | 150g | After flocculation separation | 87kg | 20kg |
| Embodiment 3 | 150g | After flocculation separation | 78kg | 29kg |
The sodium bentonite flocculation of sludge result of table 2
Table 1 is respectively the flocculant that 150g is added in the clay mortar of three parts of 107kg of same website, after separation
Concentration quality of mud fluid and supernatant quality may indicate that the flocculant can efficiently separate clay mortar；Table 2 be respectively to
Flocculant is added in the sodium bentonite mud of the 100L of three different websites, it is different according to the relative density of different websites, plus
The quality for entering front mud is respectively 145kg, 118kg, 131.5kg, and correspondence is separately added into 140g, the flocculant of 150g, 150g, root
May indicate that the flocculant can efficiently separate sodium bentonite mud according to the concentration quality of mud fluid and supernatant quality after separation
Slurry.
The principle of this flocculant is natural minerals powder (kaolin, corallite, diatomite and gypsum) adding water in ion
The complexing salt of the multinuclear hydroxy metal with high electrochemical characteristic is generated in decomposable process, these materials are by interionic suction
Attached-building bridge produces secondary combination, forms polymer.The wherein main component of the mineral such as kaolin, diatomite, corallite and gypsum
It is middle to contain alundum (Al2O3), silica, calcium carbonate and calcium sulfate respectively, after the hydrolysis of these material powders in mud system energy
It is enough that there is charge neutrality to act on adsorption bridging simultaneously, so it is relatively good to the flocculating effect of mud small molecule；In inorganic component
Blast furnace slag main component is silicon, calcium, magnesium, four kinds of oxides of aluminium.Coal ash powder in inorganic component is to produce electric charge as inducing agent
Material, in mud produce positive charge, the reaction particle with negative electrical charge-mud fine particle can be neutralized.Mud colloid
Particle majority is negatively charged, repels from each other so that colloidal stability is good.Add and positive electricity is electrolysed out in mud after flocculant
The particle of lotus, with colloid charge neutrality effect is produced, and repulsion event resolves between colloid form bulky grain and settle；Cationic
Polyacrylamide to mud in various suspended particulates have extremely strong flocculating setting efficiency, particularly to those carry negative electrical charge
Colloidal solution particulate more show its superiority.The excellent flocculating setting efficiency of cationic-type polyacrylamide includes following three
Individual aspect：First, electronegative suspended particulates are made to lose dispersion stabilization by charge neutrality.Secondly, make to hang by bridging action
Floating particles agglomerate accelerates it to settle into bulky grain.Again, react with negatively charged dissolved matter, generate insoluble matter precipitation.
By the way, a kind of flocculant of process discarded slurry of the invention can be during dumping mud treatment
Preferable mud-water separation effect is played, while construction discarded slurry rapid flocculation can be made, from addition flocculant to stirring to going out
The mixed process of existing alumen ustum only needs 3-4 minutes, process residence time to greatly shorten, and reduces processing procedure mud amount of storage, drops
The low load of processing system；Flocculant concentration mode is proof dry powder feeding, without the need for dissolving, simplifies mud conditioning technique, is saved
Investment；Flocculant composition is with natural minerals (kaolin, corallite, diatomite and gypsum) and inorganic matter (coal ash and blast furnace slag)
Main body, is aided with wide variety of organic flocculant cationic-type polyacrylamide, and wide accommodation need not adjust mud pH, and
And mud of different nature, such as clay mortar bentonite slurry can be processed；This composite flocculant is mainly in mud
All kinds of insoluble matters, the alumen ustum for being formed that flocculates stablizes closely knit, stirs survivable, and the mud flco moisture content of formation drops significantly
It is low, the load of later stage process is reduced, reduce post processing cost.
Claims (4)
1. it is a kind of process discarded slurry flocculant, it is characterised in that it is composed of the following components by mass percentage：Kaolin
20-27%, corallite 14-34%, diatomite 6-22%, gypsum 6-17%, coal ash 2-14%, blast furnace slag 4-9%, cationic
Polyacrylamide 6-20%, the mass percent sum of above-mentioned each component is 100%.
2. the preparation method of a kind of flocculant for processing discarded slurry as claimed in claim 1, it is characterised in that specifically according to
Following steps are implemented：
Step 1, weighs respectively by mass percentage kaolin 20-27%, corallite 14-34%, diatomite 6-22%, gypsum 6-
17%th, the polyacrylamide 6-20% of coal ash 2-14%, blast furnace slag 4-9%, cationic, the mass percent of above-mentioned each component
Sum is 100%；
Step 2, the kaolin weighed in step 1, corallite, diatomite, gypsum, coal ash and blast furnace slag is ground respectively and is sieved
It is not more than 48 μm of powder to particle diameter；
Step 3, the polyacrylamide of the cationic that the powder that step 2 is obtained is weighed with step 1 is sufficiently mixed, and is processed
The flocculant of discarded slurry.
3. a kind of method of the flocculant process mud of the process discarded slurry for being prepared using claim 1, it is characterised in that tool
Body is implemented according to following steps：
Step 1, it is 713-1036 that flocculant is pressed into discarded slurry with the mass ratio of flocculant：1 is added in discarded slurry, on one side
Flocculant is added while being stirred with mixer, alumen ustum occurs into discarded slurry；
Step 2, is stirred for 30 seconds after the alumen ustum in step 1 is stable, stops stirring, stands 2-3 minutes, obtains liquid at the middle and upper levels
Body and lower floor flocculation after concentration mud, so far dumping mud treatment complete.
4. a kind of method of flocculant process mud for processing discarded slurry as claimed in claim 3, it is characterised in that step
The rotating speed of mixer is 300-450r/min in 1.
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| CN201611068845.XA CN106630542A (en) | 2016-11-29 | 2016-11-29 | Flocculant for treating slurry, preparation method and slurry treatment method |
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| CN201611068845.XA CN106630542A (en) | 2016-11-29 | 2016-11-29 | Flocculant for treating slurry, preparation method and slurry treatment method |
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Cited By (3)
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| CN110451905A (en) * | 2019-08-23 | 2019-11-15 | 鄂尔多斯市固邦环保科技有限公司 | A kind of water base drilling cuttings cinder metakaolin base decontamination robust material and decontamination fixing method |
| CN111302589A (en) * | 2020-04-22 | 2020-06-19 | 南京环境集团有限公司 | Efficient dewatering method for urban construction waste slurry |
| CN115432995A (en) * | 2022-06-28 | 2022-12-06 | 广州市北二环交通科技有限公司 | Perforated brick prepared by utilizing engineering waste slurry |
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|---|---|---|---|---|
| CN110451905A (en) * | 2019-08-23 | 2019-11-15 | 鄂尔多斯市固邦环保科技有限公司 | A kind of water base drilling cuttings cinder metakaolin base decontamination robust material and decontamination fixing method |
| CN110451905B (en) * | 2019-08-23 | 2021-10-08 | 鄂尔多斯市固邦环保科技有限公司 | Coal cinder metakaolin-based decontamination stabilizing material for water-based drilling cuttings and decontamination stabilizing method |
| CN111302589A (en) * | 2020-04-22 | 2020-06-19 | 南京环境集团有限公司 | Efficient dewatering method for urban construction waste slurry |
| CN111302589B (en) * | 2020-04-22 | 2023-04-25 | 南京环境集团有限公司 | Efficient dewatering method for urban construction waste mud |
| CN115432995A (en) * | 2022-06-28 | 2022-12-06 | 广州市北二环交通科技有限公司 | Perforated brick prepared by utilizing engineering waste slurry |
| CN115432995B (en) * | 2022-06-28 | 2023-09-12 | 广州市北二环交通科技有限公司 | Porous brick prepared from engineering waste slurry |
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Application publication date: 20170510 |