CN108726803A - A kind of paper waste control calcium technique for anaerobic tower - Google Patents
A kind of paper waste control calcium technique for anaerobic tower Download PDFInfo
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- CN108726803A CN108726803A CN201810603895.6A CN201810603895A CN108726803A CN 108726803 A CN108726803 A CN 108726803A CN 201810603895 A CN201810603895 A CN 201810603895A CN 108726803 A CN108726803 A CN 108726803A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
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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
- C02F7/00—Aeration of stretches of water
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- Environmental & Geological Engineering (AREA)
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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a kind of paper waste control calcium techniques for anaerobic tower, belong to pulping wastewater treatment technical field, technical points include step S1, pre-acidified：It is flowed into conduit from water outlet via the paper waste of hydrolysis biochemistry pool processing, the PH that then dilute sulfuric acid is flowed into through chemical feed pipe one in conduit to paper waste is adjusted to 6-7；Step S2, continue to add anaerobism calcification dispersant at chemical feed pipe two in the paper waste of pre-acidified processing, and control the temperature of paper waste at 35-40 DEG C；Step S3, step S2 treated paper wastes are drained into anaerobism tower bottom via conduit and carry out wastewater treatment；Step S4, paper waste after the wastewater treatment pipeline above anaerobic tower, which is drained into aeration tank, carries out aeration and calcification processing.Present invention reduces the calcification speed of calcium ion in anaerobic tower, improve the ability of anaerobic tower processing paper waste.
Description
Technical field
The invention belongs to pulping wastewater treatment technical fields, more specifically, it relates to a kind of papermaking for anaerobic tower
Waste water control calcium technique.
Background technology
China is one of the country for producing papermaking earliest in the world, is also papermaking big country at present, and papermaking yield accounts for the world the
One, papermaking waste material resource also very abundant pair is also obtained with the improvement of paper waste with the continuous growth of papermaking consumption figure
Pay attention to.
Wherein, the techniques such as slurrying, pulp washing, bleaching and papermaking can be carried out in paper manufacturing process, current existing papermaking
It is big to mostly use alkali formula pulping process, not only contain a large amount of NaOH, Na in resulting paper waste2S and Na2SO4, and
Also contain a large amount of CaCO3With a small amount of MgCO3.At the same time, a large amount of CaCO3Presence anaerobic bacteria can be coated in, from
And cause the death in advance of anaerobic sludge, not only can waste of resource, improve cost, but also also affect the processing energy of anaerobic tower
Power.Therefore need to propose a kind of new technical solution to solve the above problems.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of paper waste control for anaerobic tower
Calcium technique reduces the calcification speed of calcium ion in anaerobic tower, improves the ability of anaerobic tower processing paper waste.
To achieve the above object, the present invention provides following technical solutions：A kind of paper waste control calcium for anaerobic tower
Technique, including following operating procedure,
Step S1, pre-acidified：It is flowed into conduit from water outlet via the paper waste of hydrolysis biochemistry pool processing, then dilute sulfuric acid
The PH being flowed into conduit to paper waste through chemical feed pipe one is adjusted to 6-7；
Step S2, continue to add anaerobism calcification dispersant at chemical feed pipe two in the paper waste of pre-acidified processing, and control
The temperature of paper waste is at 35-40 DEG C；
Step S3, step S2 treated paper wastes are drained into anaerobism tower bottom via conduit and carry out wastewater treatment；
Step S4, paper waste after the wastewater treatment pipeline above anaerobic tower, which is drained into aeration tank, carries out aeration and calcium
Change is handled.
By using above-mentioned technical proposal, the paper waste with calcium ion is drained into conduit via hydrolysis biochemistry pool
It is interior, dilute sulfuric acid then is added via chemical feed pipe one and carries out pre-acidified processing, at this time CaCO3+2HCl→CaCl2+H2O+CO2↑ one
Determine to alleviate the probability of calcification in degree；Anaerobic tower calcification dispersant is then added and reduce anaerobic bacteria by the possibility of calcification
（Reduce anaerobic bacteria by CaCO3Precipitate package and in advance deactivated possibility）, waste water is handled to improve anaerobic tower
Ability；Then the paper waste handled via anaerobic tower is drained into aeration tank, and constantly aeration is passed through air in water body（I.e.
Contain carbon dioxide gas in air）CO in balancing at this time2Concentration increases, and balance reverse movement helps that CaCO is precipitated3It is heavy
It forms sediment, to reduce the free calcium ion concentration in paper waste, reduces anaerobic bacteria and accelerated dead probability by calcification, into
And improve the ability of anaerobic tower processing paper waste.
The present invention is further arranged to：In step s 2, the anaerobism calcification dispersant includes EDTMPA, EDTA, HEDP
Or the one or more in PAAS.
By using above-mentioned technical proposal, ethylenediamine tetramethylene phosphonic acid EDTMPA has very strong chelated metal ions
Ability, EDTMPA are high purity reagent and nontoxic, and EDTMPA is white crystalline powder under room temperature, and 215-217 DEG C of fusing point is slightly soluble in
Water, at room temperature solubility be less than 5%, be soluble in ammonium hydroxide.It is almost all available in all places for making chelating agent using EDTA
EDTMPA is substituted.
Edta edta is the representative substances of chelating agent, it can be used as calcium chelating agent use.It can also simultaneously
The water-soluble complexes stablized with formation such as alkali metal, rare earth element and transition metal.
1-hydroxy ethylidene-1,1-diphosphonic acid HEDP is a kind of organophosphor acids anti-incrustation corrosion inhibitor, can with the various metals such as iron, copper, zinc from
Son forms stable complex compound, can dissolve the oxide of metal surface.HEDP remains to play good corrosion-mitigation scale-inhibition at 250 DEG C
Effect, still very stable at a high ph, not facile hydrolysis are not easily decomposed under general light and heat condition.Resistance to acid and alkali, chlorine-resistant oxidation susceptibility
More other organic phosphoric acids (salt) are good.HEDP can form six annulus chelates with underwater gold category ion, especially calcium ion, thus
HEDP has preferable scale inhibition effect and has apparent threshold effect, when being used in combination with other water treatment agents, shows ideal
Synergistic effect.
And the crystallite of the salts such as calcium carbonate, calcium sulfate or silt can be dispersed in water and not precipitate by Sodium Polyacrylate PAAS,
To reach scale inhibition purpose.
Thus calcium ion calcification in anaerobic tower can be reduced using any one in above-mentioned four kinds of anaerobism calcification dispersant
Speed improves anaerobic tower processing paper waste to improve the time-to-live of anaerobic sludge and amount of survival in anaerobic tower
Ability, while also ing save cost.
The present invention is further arranged to：In step s 2, the addition of the anaerobism calcification dispersant is controlled in 10-
15PPm/1t water.
By using above-mentioned technical proposal, wherein 10-15PPm/1t water refers to that 10- is added in one ton of paper waste
The anaerobism dispersant of 15PPm can alleviate the calcium ion in anaerobic tower and be improved at anaerobic tower to the calcification of anaerobic sludge
Manage the ability of paper waste.
The present invention is further arranged to：In step s 2, the outer wall of the conduit is equipped with heating wire, the heating wire
Main circuit is equipped with temperature controller.
Due to existence and work that anaerobic bacteria can stablize at 30-40 DEG C, and paper waste is by sewage disposal etc.
Frequently and atmosphere, water temperature is approximately kept at 25 DEG C or so to water body at this time, and water temperature is unfavorable for anaerobic bacteria at this time after multinomial work
Normal work, therefore by using above-mentioned technical proposal, heating wire is set on the outer wall of conduit, heating wire passes through temperature control
Device processed heats water body, and when water temperature is more than 40 DEG C, water body is heated in heating wire stopping；And when water temperature is less than 35 DEG C
When, heating wire restarts and starts to heat water body, you can the water temperature entered in anaerobic tower is kept to remain at
In 35-40 DEG C of effective range, the vigor of anaerobic bacteria thus can be improved, papermaking is handled to further improve anaerobic tower
The ability of waste water.
The present invention is further arranged to：The heating wire is vertically arranged, and end bearing is connected to the outer wall of the conduit thereon
On, lower end passes through the conduit and extend into duct bottom, and bearing sealed ring is equipped between the heating wire and conduit.
Due to being separately added into dilute hydrochloric acid and anaerobic tower calcium ion dispersant via chemical feed pipe one and chemical feed pipe two in conduit
Two kinds of liquids, liquid compares concentration when dosing, and to enter the paper waste in anaerobic tower, to there is local liquid mixing uneven
The phenomenon that, therefore by using above-mentioned technical proposal, heating wire rotation is pushed under the action of pump and flow, at this time can not only
Accelerate liquid to mix and be uniformly dispersed in paper waste, and even water temperature can also be made to be maintained at 30-40 DEG C, very
Convenience and laborsaving.
The present invention is further arranged to：The upper end of the heating wire is equipped with conduction brush, and the conduction brush is affixed by holder
On the outer wall of conduit.
Since heating wire is in rotation, the setting and fixation of power supply are influenced whether, therefore by using above-mentioned technical proposal,
Power lead is replaced using conduction brush, thus while keeping heating wire rotation and does not interfere with the installation of power supply and solid
It is fixed, it is very practical.
The present invention is further arranged to：If the heating wire is equipped with dry plate impeller blade.
By using above-mentioned technical proposal, the installation of impeller blade effectively increases connecing between impeller blade and current water
Contacting surface is accumulated, and then improves stirring action of the impeller blade to water body, so that the liquid mixing in paper waste is more
It is uniform quick.
The present invention is further arranged to：Pass through excessive sky via aeration tube while sodium carbonate is added in step s 4
Gas.
It thereby increases and makes by the way that calcium carbonate is added and is passed through air in aeration tank by using above-mentioned technical proposal
CO in paper waste water2The content of gas, at this time CaCO3+2HCl→CaCl2+H2O+CO2↑ balance it is reversed, to increase CaCO3
The probability and quantity of Precipitation, the sludge that then operator need to only be sunk to by under in aeration tank by sludge pump are discharged to aeration
Outside pond, you can the calcium ion in paper waste is removed, the calcification of anaerobic sludge is influenced to which calcium ion can not only be reduced, and
And the concentration of Heavy Metals in Waters can also be optimized, to effectively improve the quality of paper waste.
In conclusion the invention has the advantages that：
1, present invention reduces the calcification speed of calcium ion in anaerobic tower, improve the ability of anaerobic tower processing paper waste；
2, by the way that dilute hydrochloric acid and anaerobism calcification dispersant is added, the content of calcium precipitate in paper waste is reduced, anaerobism is alleviated
Sludge is wrapped the speed of calcification, to improve the ability that anaerobic tower handles paper waste；
3, by the way that heating wire is arranged, the temperature of water body is effectively controlled, the vigor of anaerobic bacteria is further improved.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present embodiment 1；
Fig. 2 is the process flow chart of the present embodiment 1, be mainly used for embodying free state calcium and compound state calcium technological process difference
The schematic diagram mutually converted between step；
Fig. 3 is the stereogram of conduit in the present embodiment 6；
Fig. 4 is the enlarged drawing of A in Fig. 3, is mainly used for embodying the opposite position on conduit between conduction brush, holder and conduit outer wall
It sets and connection relation；
Fig. 5 is the stereogram of the present embodiment 6 after removing conduit；
Fig. 6 is the stereogram of the present embodiment 7 after removing conduit.
Description of the drawings：1, conduit；2, chemical feed pipe one；3, chemical feed pipe two；4, heating wire；5, conduction brush；6, holder；7, impeller
Piece.
Specific implementation mode
Below in conjunction with attached drawing and each embodiment, invention is further described in detail.
Wherein identical parts are presented with like reference characters.It should be noted that word used in the following description
Language "front", "rear", "left", "right", "up" and "down" refer to the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and
"outside" refers respectively to the direction towards or away from geometric center of specific component.
Embodiment 1：A kind of paper waste control calcium technique for anaerobic tower as depicted in figs. 1 and 2, including operates as follows
Step：
Step S1, pre-acidified：It is flowed into conduit 1 from water outlet via the paper waste of hydrolysis biochemistry pool processing, then dilute sulphur
Acid is flowed into conduit 1 through chemical feed pipe 1 and is adjusted to 6-7 to the PH of paper waste.
Step S2, continue to add anaerobism calcification dispersant at chemical feed pipe 23 in the paper waste of pre-acidified processing, and
The temperature of paper waste is controlled at 35-40 DEG C.Wherein, anaerobism calcification dispersant is the compounding of EDTMPA and EDTA, and EDTMPA is
Ethylenediamine tetramethylene phosphonic acid is high purity reagent and nontoxic, and EDTMPA is white crystalline powder, fusing point 215-217 under room temperature
DEG C, it is slightly soluble in water, solubility is less than 5% at room temperature, is soluble in ammonium hydroxide.And edta edta is the representative of chelating agent
Property substance, it can be used as calcium chelating agent use.Thus can be subtracted using any one in above two anaerobism calcification dispersant
Calcium ion calcification speed in few anaerobic tower improves to improve the time-to-live of anaerobic sludge and amount of survival in anaerobic tower
The ability of anaerobic tower processing paper waste, while also ing save cost.
Step S3, step S2 treated paper wastes are drained into anaerobism tower bottom via conduit 1 and carry out wastewater treatment.
Step S4, paper waste after the wastewater treatment pipeline above anaerobic tower, which is drained into aeration tank, to be aerated
And calcification processing.
Embodiment 2：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：In step
In rapid S2, the anaerobism calcification dispersant includes the compounding of EDTMPA, EDTA and HEDP.Wherein, EDTMPA, that is, ethylenediamine tetraacetic is sub-
Methylphosphonic acid is high purity reagent and nontoxic.And edta edta is the representative substances of chelating agent, it can be used as calcium chela
Mixture uses.In addition, 1-hydroxy ethylidene-1,1-diphosphonic acid HEDP is a kind of organophosphor acids anti-incrustation corrosion inhibitor, it can be a variety of with iron, copper, zinc etc.
Metal ion forms stable complex compound, can dissolve the oxide of metal surface.Thus disperseed using above-mentioned three kinds of anaerobism calcifications
Any one in agent can reduce calcium ion calcification speed in anaerobic tower, to improve the survival of anaerobic sludge in anaerobic tower
Time and amount of survival, improve the ability of anaerobic tower processing paper waste, while also ing save cost.
Embodiment 3：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：In step
In rapid S2, the anaerobism calcification dispersant includes the compounding of EDTMPA, EDTA and PAAS.Wherein, EDTMPA, that is, ethylenediamine tetraacetic is sub-
Methylphosphonic acid is high purity reagent and nontoxic.And edta edta is the representative substances of chelating agent, it can be used as calcium chela
Mixture uses.It does not sink in addition, the crystallite of the salts such as calcium carbonate, calcium sulfate or silt can be dispersed in water by Sodium Polyacrylate PAAS
It forms sediment, to reach scale inhibition purpose.Thus anaerobic tower can be reduced using any one in above-mentioned three kinds of anaerobism calcification dispersant
Interior calcium ion calcification speed improves anaerobic tower to improve the time-to-live of anaerobic sludge and amount of survival in anaerobic tower
The ability of paper waste is handled, while also ing save cost.
Embodiment 4：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：In step
In rapid S2, the anaerobism calcification dispersant includes the compounding of EDTMPA, EDTA, HEDP and PAAS.Wherein, EDTMPA, that is, ethylenediamine
Tetramethylene phosphonic acid is high purity reagent and nontoxic.And edta edta is the representative substances of chelating agent, it can be used as
Calcium chelating agent uses.Secondly, 1-hydroxy ethylidene-1,1-diphosphonic acid HEDP is a kind of organophosphor acids anti-incrustation corrosion inhibitor, can be with iron, copper, zinc etc.
Various metals ion forms stable complex compound, can dissolve the oxide of metal surface.In addition, Sodium Polyacrylate PAAS can be by carbon
The crystallite or silt of the salts such as sour calcium, calcium sulfate, which are dispersed in water, not to be precipitated, to reach scale inhibition purpose.Thus above-mentioned four are used
Any one in kind anaerobism calcification dispersant can reduce calcium ion calcification speed in anaerobic tower, to improve in anaerobic tower
The time-to-live of anaerobic sludge and amount of survival, improve the ability of anaerobic tower processing paper waste, while also ing save cost.
Embodiment 5：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：In step
In rapid S2, the addition of anaerobism calcification dispersant is controlled in 10-15PPm/1t water.Wherein, " 10-15PPm/1t water " refers to one
The anaerobism dispersant of 10-15PPm is added in ton paper waste can alleviate calcification of the calcium ion to anaerobic sludge in anaerobic tower
Effect improves the ability of anaerobic tower processing paper waste.
Embodiment 6：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：Such as figure
Shown in 3 and Fig. 4, due to existence and work that anaerobic bacteria can stablize at 30-40 DEG C, and paper waste is by sewage disposal
Frequently and atmosphere etc. water body after multinomial work, water temperature is approximately kept at 25 DEG C or so at this time, and water temperature is unfavorable for anaerobism at this time
The normal work of bacterium.Therefore in order to improve the vigor of anaerobic bacteria, in step s 2, heating wire 4 is installed on the outer wall of conduit 1,
There are one temperature controllers for installation on the main circuit of heating wire 4（It is not shown in figure）.Heating wire 4 passes through temperature controller pair at this time
Water body is heated, and when water temperature is more than 40 DEG C, water body is heated in the stopping of heating wire 4；And when water temperature is less than 35 DEG C, electricity
Heated filament 4 restarts and starts to heat water body, you can the water temperature entered in anaerobic tower is kept to remain at 35-40
DEG C effective range in, the vigor of anaerobic bacteria thus can be improved, paper waste is handled to further improve anaerobic tower
Ability.
As shown in Figure 1, due to being separately added into dilute hydrochloric acid and anaerobic tower via chemical feed pipe 1 and chemical feed pipe 23 in conduit 1
Two kinds of liquids of calcium ion dispersant, liquid compares concentration when dosing, can to enter the paper waste in anaerobic tower and there is part
The uneven phenomenon of liquid mixing.It mixes and is uniformly dispersed in paper waste in conjunction with shown in Fig. 5, therefore in order to accelerate liquid,
Heating wire 4 is vertically arranged, and end bearing is connected on the outer wall of above-mentioned conduit 1 thereon, and lower end passes through conduit 1 and extend into pipeline
Bottom is also equipped with bearing sealed ring between heating wire 4 and conduit 1（It is not shown in figure）.Thus under the action of pump and flow
It pushes heating wire 4 to rotate, liquid can not only be accelerated at this time and mix and be uniformly dispersed in paper waste, and can also be made
Even water temperature is maintained at 30-40 DEG C, very convenient and laborsaving.
Since heating wire 4 is in rotation, the setting and fixation of power supply are influenced whether, therefore in order to improve impeller blade 7 to water
The stirring action of body installs conduction brush 5 in the upper end of heating wire 4, and the upper end of above-mentioned conduction brush 5 is fixed in by four holders 6
On the outer wall of conduit 1.Thus while keeping heating wire 4 to rotate and the installation and fixation of power supply are not interfered with, very
It is practical.
Embodiment 7：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：Such as figure
Shown in 6, three groups of impeller blades 7 are installed, and above-mentioned three groups of impeller blades 7 are distributed in axial on heating wire 4, while every heating wire
4 inclined set up.The contact area between impeller blade 7 and current water is effectively increased, and then it is right to improve impeller blade 7
The stirring action of water body so that in paper waste liquid mixing more it is uniform quickly.
Embodiment 8：A kind of paper waste control calcium technique for anaerobic tower, difference from example 1 is that：In step
Pass through excessive air via aeration tube while sodium carbonate is added in rapid S4.Thereby increase CO in paper waste2Gas
Content, at this time CaCO3+2HCl→CaCl2+H2O+CO2↑ balance it is reversed, to increase CaCO3The probability sum number of Precipitation
Amount, the sludge that then operator need to only be sunk to by under in aeration tank by sludge pump are discharged to outside aeration tank, you can remove papermaking
Calcium ion in waste water influences the calcification of anaerobic sludge to reduce calcium ion, and can also optimize in water body
The concentration of heavy metal, to effectively improve the quality of paper waste.
Specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
The modification that not creative contribution can be made to the present embodiment as needed after reading this specification, but as long as in this hair
It is all protected by Patent Law in bright right.
Claims (8)
1. a kind of paper waste control calcium technique for anaerobic tower, it is characterised in that：Including following operating procedure,
Step S1, pre-acidified：Via the paper waste of hydrolysis biochemistry pool processing conduit is flowed into from water outlet（1）It is interior, it is then dilute
Sulfuric acid is through chemical feed pipe one（2）It is flowed into conduit（1）The interior PH to paper waste is adjusted to 6-7；
Step S2, continue from chemical feed pipe two in the paper waste of pre-acidified processing（3）Place's addition anaerobism calcification dispersant, and control
The temperature of paper waste processed is at 35-40 DEG C；
Step S3, by step S2 treated paper wastes via conduit（1）It is drained into anaerobism tower bottom and carries out wastewater treatment；
Step S4, paper waste after the wastewater treatment pipeline above anaerobic tower, which is drained into aeration tank, carries out aeration and calcium
Change is handled.
2. a kind of paper waste control calcium technique for anaerobic tower according to claim 1, it is characterised in that：In step S2
In, the anaerobism calcification dispersant includes the one or more in EDTMPA, EDTA, HEDP or PAAS.
3. a kind of paper waste control calcium technique for anaerobic tower according to claim 2, it is characterised in that：In step S2
In, the addition of the anaerobism calcification dispersant is controlled in 10-15PPm/1t water.
4. a kind of paper waste control calcium technique for anaerobic tower according to claim 3, it is characterised in that：In step S2
In, the conduit（1）Outer wall be equipped with heating wire（4）, the heating wire（4）Main circuit be equipped with temperature controller.
5. a kind of paper waste control calcium technique for anaerobic tower according to claim 4, it is characterised in that：The electric heating
Silk（4）It is vertically arranged, end bearing is connected to the conduit thereon（1）Outer wall on, lower end pass through the conduit（1）And it stretches into
To duct bottom, the heating wire（4）With conduit（1）Between be equipped with bearing sealed ring.
6. a kind of paper waste control calcium technique for anaerobic tower according to claim 5, it is characterised in that：The electric heating
Silk（4）Upper end be equipped with conduction brush（5）, the conduction brush（5）Pass through holder（6）It is fixed in conduit（1）Outer wall on.
7. a kind of paper waste control calcium technique for anaerobic tower according to claim 6, it is characterised in that：The electric heating
Silk（4）If being equipped with dry plate impeller blade（7）.
8. a kind of paper waste control calcium technique for anaerobic tower according to claim 1 or claim 7, it is characterised in that：In step
Pass through excessive air via aeration tube while sodium carbonate is added in rapid S4.
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| CN201810603895.6A CN108726803B (en) | 2018-06-12 | 2018-06-12 | Papermaking wastewater calcium control process for anaerobic tower |
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| CN201810603895.6A CN108726803B (en) | 2018-06-12 | 2018-06-12 | Papermaking wastewater calcium control process for anaerobic tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482781A (en) * | 2019-08-01 | 2019-11-22 | 广西大学 | A method of high calcium paper-making industrial waste water is handled using whey pre-sour to promote anaerobic reaction and inhibit calcification |
| CN111018235A (en) * | 2019-11-21 | 2020-04-17 | 山鹰华南纸业有限公司 | Process for improving papermaking sewage treatment efficiency |
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| CN110482781A (en) * | 2019-08-01 | 2019-11-22 | 广西大学 | A method of high calcium paper-making industrial waste water is handled using whey pre-sour to promote anaerobic reaction and inhibit calcification |
| CN110482781B (en) * | 2019-08-01 | 2021-12-10 | 广西大学 | Method for promoting anaerobic reaction and inhibiting calcification by treating high-calcium paper-making industrial wastewater with whey pre-acid |
| CN111018235A (en) * | 2019-11-21 | 2020-04-17 | 山鹰华南纸业有限公司 | Process for improving papermaking sewage treatment efficiency |
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