CN114105356B - Advanced treatment process for waste paper making - Google Patents
Advanced treatment process for waste paper making Download PDFInfo
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- CN114105356B CN114105356B CN202111370773.5A CN202111370773A CN114105356B CN 114105356 B CN114105356 B CN 114105356B CN 202111370773 A CN202111370773 A CN 202111370773A CN 114105356 B CN114105356 B CN 114105356B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000010893 paper waste Substances 0.000 title claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 36
- 238000004062 sedimentation Methods 0.000 claims abstract description 27
- 238000001179 sorption measurement Methods 0.000 claims abstract description 19
- 239000000701 coagulant Substances 0.000 claims abstract description 12
- 229960000892 attapulgite Drugs 0.000 claims abstract description 4
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 61
- 239000010802 sludge Substances 0.000 claims description 28
- 238000005189 flocculation Methods 0.000 claims description 26
- 230000016615 flocculation Effects 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 230000015271 coagulation Effects 0.000 claims description 14
- 238000005345 coagulation Methods 0.000 claims description 14
- 238000010992 reflux Methods 0.000 claims description 13
- 239000003463 adsorbent Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000004537 pulping Methods 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 5
- 238000003911 water pollution Methods 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 4
- 239000013043 chemical agent Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000001112 coagulating effect Effects 0.000 abstract description 2
- 235000003891 ferrous sulphate Nutrition 0.000 abstract description 2
- 239000011790 ferrous sulphate Substances 0.000 abstract description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 6
- 239000008394 flocculating agent Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a deep treatment process for waste paper making sewage, which is used for treating the effluent of a biochemical section of waste paper making sewage treatment, and the degradation of refractory organic matters (COD) in the sewage and the reduction of sewage chromaticity, suspended matters (SS) and the like are realized by controlling the adding point and the adding proportion of chemical agents (mainly modified attapulgite and coagulant) through the actions of physical adsorption, coagulating sedimentation and the like. The advanced wastewater treatment process is simple to operate, small in chemical agent addition amount and small in mud production amount, can replace the traditional Fenton oxidation process under specific conditions, reduces addition amounts of chemicals such as strong acid, strong alkali, hydrogen peroxide and ferrous sulfate, and reduces the advanced wastewater treatment cost of waste paper making.
Description
Technical Field
The invention belongs to the technical field of papermaking wastewater treatment, and relates to a deep treatment process of waste paper papermaking wastewater.
Background
The recycled paper uses waste paperboard, waste newspaper, waste books and periodicals and the like as main raw materials to produce products such as white paperboard, cardboard paper, corrugated paper and the like with various specifications. The main technological process includes pulping, purifying, sieving, concentrating, storing pulp, beating, sieving, squeezing, stoving, winding, etc. Because the waste paper raw materials are various, the impurity content is high, and part of waste paper is recycled for many times, compared with common pulping and papermaking sewage, the waste paper and papermaking sewage has more complex components, contains higher suspended matters and organic load, and has great treatment difficulty.
The advanced wastewater treatment process which is most widely applied and mature in each waste paper mill is mainly Fenton (Fenton) oxidation, which is one of advanced oxidation technologies and has the characteristics of strong oxidizing capability, short reaction time and the like. FeSO is added under acidic condition 4 And H 2 O 2 The hydroxyl radical with strong oxidizing property is generated by the reaction, and substances such as cellulose, hemicellulose, lignin and the like in pulping and papermaking sewage can be effectively degraded. However, the method still has the problems of high treatment cost, large sludge yield, difficult treatment and utilization of the iron-rich sludge, easy corrosion of equipment, large addition of acid and alkali and the like in the prior operation. Meanwhile, aiming at the conditions of large fluctuation of incoming water quality and high pollution load of the recycled paper sewage, the adding proportion of Fenton process medicaments is difficult to control, and the actual operation adjustment is often difficult to keep up.
Therefore, the research of the advanced treatment process for waste paper papermaking, which has the advantages of low comprehensive treatment and disposal cost, simple operation and stable operation, has important significance.
Disclosure of Invention
The invention aims to provide a deep treatment process of waste paper and papermaking sewage, which greatly reduces the contents of organic matters (COD), chromaticity, suspended matters (SS) and the like of the treated effluent and meets the water inlet standard of GB 3554-2008 ' water pollution emission standard of pulping and papermaking industry ' or reclaimed water recycling system '.
The technical scheme of the invention is as follows:
a deep treatment process for waste paper making sewage comprises the following process steps:
s1, firstly flowing the waste paper papermaking sewage after biochemical treatment through an adsorption reaction tank, adding the adsorbent modified attapulgite into the adsorption reaction tank through an adsorbent adding device, preparing 8% -12% concentration and 2% -6% adding amount, and stirring and reacting by a No. 1 stirrer;
s2, continuously flowing the sewage of the adsorption reaction tank through a primary flocculation reaction tank, adding a No. 1 flocculant nonionic polyacrylamide into the primary flocculation reaction tank through a No. 1 flocculant adding device, and stirring and reacting by a No. 2 stirrer, wherein the concentration is 1% -3%o, and the adding amount is 1% -3%o;
s3, discharging water from the primary flocculation reaction tank to a primary sedimentation tank, wherein part of sediment sludge is returned to the adsorption reaction tank for recycling through a sludge return pump, and the rest of sediment sludge is conveyed to a secondary sedimentation tank through a residual sludge pump;
s4, enabling the effluent of the first-stage sedimentation tank to flow into a coagulation reaction tank, adding coagulant polyaluminium chloride to the coagulation reaction tank through a coagulant adding device, preparing concentration to be 10% -20%, adding amount to be 2% -4%, and stirring and reacting by a No. 3 stirrer;
s5, continuously flowing water discharged from the coagulation reaction tank through a secondary flocculation reaction tank, adding the No. 2 flocculant anionic polyacrylamide into the secondary flocculation reaction tank through a No. 2 flocculant adding device, preparing the concentration of 1% -3% and the adding amount of 1% -3% and stirring by a No. 4 stirrer for reaction;
s6, the water discharged from the secondary flocculation reaction tank flows to the secondary sedimentation tank 22, and the final water discharged meets the water inlet standard of a water pollution discharge standard of pulping and papermaking industry or a reclaimed water recycling system of GB 3554-2008.
Preferably, the concentration of the adsorbent is 10%, the concentration of the coagulant is 10%, and the concentration of the flocculant No. 1 and the flocculant No. 2 are 2%; the adding amount of the adsorbent is 3 per mill, the adding amount of the coagulant is 3 per mill, and the adding amount of the flocculant No. 1 and the flocculant No. 2 is 1 per mill.
Preferably, the Hydraulic Retention Time (HRT) of the adsorption reaction tank is 20-60 min, the HRT of the coagulation reaction tank is 10-30 min, the HRT of the primary flocculation reaction tank and the secondary flocculation reaction tank is 5-12 min, and the HRT of the primary sedimentation tank and the secondary sedimentation tank are 4-6 h and 1-3 h respectively.
More preferably, the HRT of the adsorption reaction tank is 40min, the HRT of the coagulation reaction tank is 20min, the HRT of the primary flocculation reaction tank and the secondary flocculation reaction tank is 8min, and the HRT of the primary sedimentation tank and the secondary sedimentation tank are 5h and 2h respectively.
In the invention, the stirrer No. 1 and the stirrer No. 3 are paddle stirrers, and the stirrer No. 2 and the stirrer No. 4 are frame stirrers.
Preferably, the rotation speeds of the stirrer No. 1 and the stirrer No. 3 are 150-250 rpm, and the rotation speeds of the stirrer No. 2 and the stirrer No. 4 are 30-70 rpm.
More preferably, the stirrer rotation speeds of stirrer No. 1 and stirrer No. 3 are 200rpm, and stirrer rotation speeds of stirrer No. 2 and stirrer No. 4 are 50 rpm.
Preferably, the sludge reflux ratio of the sludge reflux pump in the step 3 is controlled to be 25-75%, so that the adsorbent which does not reach adsorption saturation is recycled, and the cost is further reduced.
More preferably, the step 3 sludge reflux pump controls the sludge reflux ratio to be 50%.
The invention provides a deep treatment process for waste paper making sewage, which is used for treating the effluent of a biochemical section of the waste paper making sewage, and the refractory organic matters (COD) in the sewage are degraded in a targeted manner through the actions of physical adsorption, coagulating sedimentation and the like by controlling the adding point and the adding proportion of chemical agents (mainly modified attapulgite and polyaluminium chloride), so as to reduce the chromaticity of the sewage, suspended matters (SS) and the like. The advanced wastewater treatment process is simple to operate, small in chemical agent addition amount and small in mud production amount, can replace the traditional Fenton oxidation process under specific conditions, reduces addition amounts of chemicals such as strong acid, strong alkali, hydrogen peroxide and ferrous sulfate, and reduces the advanced wastewater treatment cost of waste paper making.
Drawings
Fig. 1 is a route diagram of the advanced treatment process of waste paper making sewage.
In the figure: 1. the waste paper papermaking sewage treatment biochemical section effluent, 2, an adsorption reaction tank, 3, a primary flocculation reaction tank, 4, an adsorbent feeding device, a No. 5.1 stirrer, a No. 6.1 flocculant feeding device, a No. 7.2 stirrer, a primary flocculation reaction tank water outlet pipeline, 9, a primary sedimentation tank, 10, a primary sedimentation tank water outlet pipeline, 11, a sludge reflux pump, 12, a sludge reflux pipeline, 13, a residual sludge pump, 14, a residual sludge pipeline, 15, a coagulation reaction tank, 16, a secondary flocculation reaction tank, 17.3 stirrers, 18, a coagulant feeding device, 19.4 stirrers, a No. 20.2 flocculant feeding device, 21, a secondary flocculation reaction tank water outlet pipeline, 22, a secondary sedimentation tank and 23, and deeply treating the effluent.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, but the embodiments do not limit the present invention in any way. Unless specifically stated otherwise, the reagents, methods and apparatus employed in the present invention are those conventional in the art. Reagents and materials used in the following examples are commercially available unless otherwise specified.
Example 1:
as shown in FIG. 1, the advanced treatment process of the waste paper making sewage comprises the following process steps when the COD concentration of the influent water is lower than 200 mg/L:
s1, flowing the biochemical treated recycled paper pulping and papermaking sewage into an adsorption reaction tank 2, adding an adsorbent with the configuration proportion of 10% and the addition amount of 3 per mill by an adsorbent adding device 4, stirring and reacting by a No. 1 stirrer 5 at the rotation speed of 200rpm, and setting the Hydraulic Retention Time (HRT) to be 30min;
s2, sewage in the adsorption reaction tank 2 continuously flows through the primary flocculation reaction tank 3, a No. 1 flocculating agent with the configuration proportion of 2 per mill and the addition amount of 1 per mill is added by a No. 1 flocculating agent adding device 6, and stirred by a No. 2 stirrer 7 for reaction at the rotating speed of 50rpm, wherein the HRT is set to 8min;
s3, sewage flows into the primary sedimentation tank 9, HRT is set to be 4 hours, the sludge reflux ratio is controlled to be 75% through the sludge reflux pump 11, and residual sludge is conveyed to the secondary sedimentation tank 22 through the residual sludge pump 13;
s4, enabling effluent of the first-stage sedimentation 9 pool to flow into a coagulation reaction pool 15, adding coagulant with the configuration proportion of 10% and the addition amount of 3 per mill by a coagulant adding device 18, stirring and reacting by a No. 3 stirrer 17 at the rotating speed of 150rpm, and setting the HRT to be 20min;
s5, sewage in the coagulation reaction tank 15 continuously flows through the secondary flocculation reaction tank 16, flocculant with the configuration proportion of 2 per mill and the addition amount of 1 per mill is added by a flocculant adding device 20, and stirred by a stirrer 19 with the rotation speed of 50rpm for reaction, wherein HRT is set to 8min;
s6, finally, sewage flows into the secondary sedimentation tank 22, HRT is set to be 1h, and finally, the treated effluent meets GB 3554-2008 ' water pollution discharge Standard for pulping and papermaking industry ' or reclaimed water reuse Standard '.
Experimental results: experiments were performed with the advanced treatment process method and procedure described above in example 1, and group A, B, C in table 1 shows the treatment effect of example 1 with varying fluctuations in the quality of incoming water.
Table 1 results of the water quality treatment test of example 1
Example 2:
in the advanced treatment process of waste paper making sewage shown in fig. 1, when the COD concentration of inlet water is 200-250 mg/L, the treatment comprises the following process steps:
s1, flowing the biochemical treated recycled paper pulping and papermaking sewage into an adsorption reaction tank 2, adding an adsorbent with the configuration proportion of 10% and the addition amount of 4 per mill by an adsorbent adding device 4, stirring and reacting by a No. 1 stirrer 5 at the rotating speed of 150rpm, and setting the Hydraulic Retention Time (HRT) to be 60min;
s2, sewage in the adsorption reaction tank 2 continuously flows through the primary flocculation reaction tank 3, a No. 1 flocculating agent with the configuration proportion of 1.5 per mill and the addition amount of 1 per mill is added by a No. 1 flocculating agent adding device 6, and the mixture is stirred and reacted by a No. 2 stirrer 7 at the rotating speed of 50rpm, wherein the HRT is set to be 10min;
s3, sewage flows into the primary sedimentation tank 9, HRT is set to be 5 hours, the sludge reflux ratio is controlled to be 50% by the sludge reflux pump 11, and the residual sludge is conveyed to the secondary sedimentation tank 22 by the residual sludge pump 13;
s4, enabling effluent of the first-stage sedimentation 9 pool to flow into a coagulation reaction pool 15, adding coagulant with the configuration proportion of 20% and the addition amount of 2%o by a coagulant adding device 18, stirring and reacting by a No. 3 stirrer 17 at the rotating speed of 150rpm, and setting the HRT to be 15min;
s5, sewage from the coagulation reaction tank 15 continuously flows through the secondary flocculation reaction tank 16, flocculant with the configuration proportion of 1.5 per mill and the addition amount of 1 per mill is added by a flocculant adding device 20 No. 2, and stirred by a stirrer 19 No. 4 at the rotation speed of 50rpm for reaction, wherein HRT is set to be 10min;
s6, finally, sewage flows into a secondary sedimentation tank 22, the HRT is 2 hours, and finally, the treated effluent meets GB 3554-2008 'water pollution discharge Standard of pulping and papermaking industry'.
Experimental results: experiments were performed with the advanced treatment process method and procedure described above in example 2, and group D, E, F in table 2 shows the treatment effect of example 2 with varying fluctuations in the quality of incoming water.
Table 2 results of the water quality treatment test of example 2
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (4)
1. The advanced treatment process of the waste paper making sewage is characterized by comprising the following process steps of:
s1, firstly enabling waste paper papermaking wastewater after biochemical treatment to flow through an adsorption reaction tank (2), adding adsorbent modified attapulgite into the adsorption reaction tank through an adsorbent adding device (4), preparing 8% -12% concentration and 2% -6% adding amount, and stirring and reacting by a No. 1 stirrer (5);
s2, continuously flowing the sewage in the adsorption reaction tank through a primary flocculation reaction tank (3), adding a No. 1 flocculant nonionic polyacrylamide into the primary flocculation reaction tank (3) through a No. 1 flocculant adding device (6), preparing the sewage with the concentration of 1% -3%o and the adding amount of 1% -3%o, and stirring and reacting by a No. 2 stirrer (7);
s3, discharging water from the primary flocculation reaction tank (3) to a primary sedimentation tank (9), wherein part of precipitated sludge is refluxed to the adsorption reaction tank for recycling through a sludge reflux pump (11), and the other part of the precipitated sludge is conveyed to a secondary sedimentation tank (22) through a residual sludge pump (13);
s4, enabling the effluent of the first-stage sedimentation tank (9) to flow into a coagulation reaction tank (15), adding coagulant polyaluminium chloride to the coagulation reaction tank (15) through a coagulant adding device (18), preparing concentration of 10% -20% and adding amount of 2% -4%, and stirring and reacting by a No. 3 stirrer (17);
s5, continuously flowing the effluent of the coagulation reaction tank (15) through a secondary flocculation reaction tank (16), adding No. 2 flocculant anionic polyacrylamide into the secondary flocculation reaction tank (16) through a No. 2 flocculant adding device (20), preparing the concentration of 1% -3% and the adding amount of 1% -3% and stirring and reacting by a No. 4 stirrer (19);
s6, discharging water from the secondary flocculation reaction tank to a secondary sedimentation tank (22), wherein the final discharged water meets the water inlet standard of a pulping and papermaking industry water pollution discharge standard or a reclaimed water recycling system of GB 3554-2008.
2. The advanced treatment process of waste paper making sewage according to claim 1, wherein: the hydraulic retention time HRT of the adsorption reaction tank (2) is 20-60 min, the HRT of the coagulation reaction tank (15) is 10-30 min, the HRT of the primary flocculation reaction tank (3) and the HRT of the secondary flocculation reaction tank (16) are 5-12 min, and the HRT of the primary sedimentation tank (9) and the HRT of the secondary sedimentation tank (22) are 4-6 h and 1-3 h respectively.
3. The advanced treatment process of waste paper making sewage according to claim 1, wherein: the stirrer No. 1 (5) and the stirrer No. 3 (17) are paddle stirrers, and the rotating speed is 150-250 rpm; the No. 2 stirrer (7) and the No. 4 stirrer (19) are frame stirrers, and the rotating speed is 30-70 rpm.
4. The advanced treatment process of waste paper making sewage according to claim 1, wherein: in the step S3, the sludge reflux pump (11) controls the sludge reflux ratio to be 25% -75%.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5624089A (en) * | 1979-08-02 | 1981-03-07 | Oji Paper Co Ltd | Coagulation and sedimentation treatment of waste water of pulp mill |
| CN1240767A (en) * | 1998-07-03 | 2000-01-12 | 毛呜庆 | Process for treating waste paper-making liquor |
| JP2001079308A (en) * | 1999-09-20 | 2001-03-27 | Microalgae Corporation | Flocculating material for waste pulp in paper making waste water and treatment of paper making waste water using the same |
| CN101050044A (en) * | 2007-05-14 | 2007-10-10 | 庞鹏远 | Method for carrying out advanced treatment on papermaking sewage |
| CN101544450A (en) * | 2009-05-05 | 2009-09-30 | 浙江省环境保护科学设计研究院 | Method for treating and recycling waste paper making wastewater |
| CN102417247A (en) * | 2010-09-27 | 2012-04-18 | 中国科学院生态环境研究中心 | Two-stage sludge reflux enhanced coagulation technology |
| CN102962029A (en) * | 2012-12-11 | 2013-03-13 | 常州大学 | Papermaking wastewater treating agent |
| CN204022626U (en) * | 2014-08-14 | 2014-12-17 | 唐山市天正实业有限公司 | Paper waste recycling treatment system |
| CN104402138A (en) * | 2014-10-24 | 2015-03-11 | 无锡伊佩克科技有限公司 | Papermaking wastewater treatment method |
| CN106673255A (en) * | 2016-12-22 | 2017-05-17 | 北京恩菲环保技术有限公司 | Wastewater treatment method and wastewater treatment device |
| CN106904765A (en) * | 2017-03-24 | 2017-06-30 | 北控水务(中国)投资有限公司 | The advanced treatment system and method for a kind of combined sewage |
| CN107200445A (en) * | 2017-08-01 | 2017-09-26 | 王建玲 | The recycle device and processing method of papermaking enriched water |
| CN109879479A (en) * | 2019-03-21 | 2019-06-14 | 岳阳林纸股份有限公司 | A kind of method of paper-making effluent advanced treating |
| CN111410259A (en) * | 2020-03-31 | 2020-07-14 | 苏州清控环保科技有限公司 | Novel coagulation wastewater treatment process |
| CN211546174U (en) * | 2019-12-24 | 2020-09-22 | 玖龙纸业（太仓）有限公司 | Water treatment device for diluting papermaking chemicals |
-
2021
- 2021-11-18 CN CN202111370773.5A patent/CN114105356B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5624089A (en) * | 1979-08-02 | 1981-03-07 | Oji Paper Co Ltd | Coagulation and sedimentation treatment of waste water of pulp mill |
| CN1240767A (en) * | 1998-07-03 | 2000-01-12 | 毛呜庆 | Process for treating waste paper-making liquor |
| JP2001079308A (en) * | 1999-09-20 | 2001-03-27 | Microalgae Corporation | Flocculating material for waste pulp in paper making waste water and treatment of paper making waste water using the same |
| CN101050044A (en) * | 2007-05-14 | 2007-10-10 | 庞鹏远 | Method for carrying out advanced treatment on papermaking sewage |
| CN101544450A (en) * | 2009-05-05 | 2009-09-30 | 浙江省环境保护科学设计研究院 | Method for treating and recycling waste paper making wastewater |
| CN102417247A (en) * | 2010-09-27 | 2012-04-18 | 中国科学院生态环境研究中心 | Two-stage sludge reflux enhanced coagulation technology |
| CN102962029A (en) * | 2012-12-11 | 2013-03-13 | 常州大学 | Papermaking wastewater treating agent |
| CN204022626U (en) * | 2014-08-14 | 2014-12-17 | 唐山市天正实业有限公司 | Paper waste recycling treatment system |
| CN104402138A (en) * | 2014-10-24 | 2015-03-11 | 无锡伊佩克科技有限公司 | Papermaking wastewater treatment method |
| CN106673255A (en) * | 2016-12-22 | 2017-05-17 | 北京恩菲环保技术有限公司 | Wastewater treatment method and wastewater treatment device |
| CN106904765A (en) * | 2017-03-24 | 2017-06-30 | 北控水务(中国)投资有限公司 | The advanced treatment system and method for a kind of combined sewage |
| CN107200445A (en) * | 2017-08-01 | 2017-09-26 | 王建玲 | The recycle device and processing method of papermaking enriched water |
| CN109879479A (en) * | 2019-03-21 | 2019-06-14 | 岳阳林纸股份有限公司 | A kind of method of paper-making effluent advanced treating |
| CN211546174U (en) * | 2019-12-24 | 2020-09-22 | 玖龙纸业（太仓）有限公司 | Water treatment device for diluting papermaking chemicals |
| CN111410259A (en) * | 2020-03-31 | 2020-07-14 | 苏州清控环保科技有限公司 | Novel coagulation wastewater treatment process |
Non-Patent Citations (7)
| Title |
|---|
| 凹土处理造纸废水的技术研究;胡涛,金叶玲,严群;贵州化工(第05期);全文 * |
| 制浆造纸废水的治理;朱瑞根;西南造纸(第03期);全文 * |
| 粉煤灰在造纸废水处理中的应用;王海霞;刘秉钺;;黑龙江造纸(第02期);全文 * |
| 絮凝-生化-吸附法处理稻草造纸废水;曾斌;李庆新;余训民;胡立嵩;;江苏环境科技(第S2期);全文 * |
| 造纸中段水的絮凝-吸附处理;刘红;梁晶;邵俊;罗薇薇;;化学工程师(第06期);全文 * |
| 造纸废水混凝处理研究;刘斌,张梅,朱昌煜,王树恩,李志刚,赵薇;内蒙古石油化工(第06期);全文 * |
| 造纸废水的治理研究;胡涛,陆梅芳;工业安全与环保(第10期);全文 * |
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