CN101786758A - Waste paper pulping and papermaking advanced waste water treatment technique - Google Patents
Waste paper pulping and papermaking advanced waste water treatment technique Download PDFInfo
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- CN101786758A CN101786758A CN 201010136651 CN201010136651A CN101786758A CN 101786758 A CN101786758 A CN 101786758A CN 201010136651 CN201010136651 CN 201010136651 CN 201010136651 A CN201010136651 A CN 201010136651A CN 101786758 A CN101786758 A CN 101786758A
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Abstract
The invention discloses a waste paper pulping and papermaking advanced waste water treatment technique, comprising the following steps of: waste water collection, magnetization, first-stage dosing reaction, first-stage precipitation, second-stage dosing reaction, second-stage precipitation and temporary storage of clear water. The technique has the advantages that (1) the technique is based on physicochemical technology, and the design is scientific and reasonable, so that good effect of advanced waste water treatment can be ensured; (2) the technique not only removes organic pollutant and chroma in the waste water with high efficiency, but also greatly reduces the hardness of the waster water and lays foundation for recycling the waste water; and (3) the technique has wide technical applicability and strong shock resistance capability.
Description
Technical field
The present invention relates to a kind of waste paper pulping and papermaking advanced waste water treatment technique, especially a kind of waste water advanced treatment process that effectively designs at the Waste Water of Pulp and Paper Making from Waste Paper water quality characteristics after secondary biochemical treatment.
Background technology
The waste water of domestic waste paper enterprises in pulp and paper industry mostly adopts the technology of secondary biochemical treatment to handle, biochemical treatment water outlet COD is usually about 100mg/L, can satisfy existing " pulp and paper industry pollution discharge standard " (GB3544-2008) standard C OD be lower than the requirement of 120mg/L, therefore current less at Waste Water of Pulp and Paper Making from Waste Paper advanced treatment The Application of Technology technology.And " pulp and paper industry pollution discharge standard " (GB3544-2008) requires to be located in geographic enterprises in pulp and paper industry such as territorial development density height, environmental carrying capacity be weak in the standard, and wastewater discharge standard is carried out the special emission limit COD of water pollutant and is lower than the 60mg/L requirement.Use at present more flocculation process and only Waste Water of Pulp and Paper Making from Waste Paper COD can be reduced to about 70mg/L about by 100mg/L in the paper-making effluent advanced treatment, the Fenton oxidizing process only can be reduced to Waste Water of Pulp and Paper Making from Waste Paper COD about 60mg/L about by 100mg/L.Effectively at the Waste Water of Pulp and Paper Making from Waste Paper advanced treatment, can make stable the reaching of waste water COD be lower than 60mg/L standard, economically feasible, technology reliable technique at present, be in blank at home.
Summary of the invention
The problem to be solved in the present invention is: the waste paper pulping and papermaking advanced waste water treatment technique that a kind of system stability is good, processing costs is low, treatment effect is good is provided.
In order to solve the problems of the technologies described above, waste paper pulping and papermaking advanced waste water treatment technique of the present invention comprises following concrete steps:
(1) use wastewater collection in water collecting basin wastepaper pulping and papermaking;
(2) by lift pump waste water is promoted to magnetization processing in the magnetizing apparatus;
(3) waste water that will magnetize after handling enters in the one-level dosing mixed reaction pond, then according to 0.3-0.4kg/m
3Standard in reaction tank, add ferrous sulfate, treat that ferrous sulfate mixes fully with waste water after, in reaction tank, add calcium hydroxide again and regulate wastewater pH to 8.5-9.0, mix reaction after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide, promote the flco cohesion;
(4) waste water after step (3) processing is entered in the one-level settling tank, realize a solid-liquid separation of waste water;
(5) waste water after will separating enters in the secondary dosing mixed reaction pond, according to 0.2-0.25kg/m
3Standard in reaction tank, drop into Tai-Ace S 150, treat that Tai-Ace S 150 and waste water hybrid reaction are after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide, promote the flco cohesion;
(6) waste water after step (5) processing is entered in the second-level settling pond, realize the secondary solid-liquid separation of waste water;
(7) clear water after the secondary solid-liquid separation is entered in the clean water basin temporaryly, be convenient to recycle.
In order to obtain preferably sedimentation effect so that the solid-liquid separation of waste water, waste paper pulping and papermaking advanced waste water treatment technique of the present invention, described one-level settling tank and second-level settling pond adopt horizontal sedimentation tank, radial-flow sedimentation tank or tube settler.
Waste paper pulping and papermaking advanced waste water treatment technique of the present invention, described one-level settling tank all is connected with sludge treatment equipment with second-level settling pond.
Waste paper pulping and papermaking advanced waste water treatment technique of the present invention, magnetizing apparatus is handled the bonding state that effectively improves waste water Semi-polarity organic pollutant and water molecules, improves the speed of response and the level of response of organic pollutant in follow-up adding medicament and the waste water; One-level dosing mixed reaction pond at first reacts the waste water of handling through magnetization with ferrous ion, the solubilised state organic pollutant is converted into the mesocolloid attitude after in conjunction with ferrous ion in the waste water, make mesocolloid attitude pollutent be converted into suspended state by adding calcium hydroxide again, the adding of anionic polyacrylamide can effectively promote the one-tenth wadding of suspended state material, increase sedimentation function, calcium hydroxide add the reduction that can also realize total hardness in the waste water, water reuse in being beneficial to; The one-level settling tank is realized the solid-liquid separation of one-level dosing mixed reaction pond water outlet; Secondary dosing mixed reaction pond reaches the purpose of strengthening decolouring and further reducing organic pollutant in the waste water by adding Tai-Ace S 150, and the adding of anionic polyacrylamide can promote the one-tenth wadding of aluminum ion hydrolysis flco, increases sedimentation function; Second-level settling pond is realized the solid-liquid separation of secondary dosing mixed reaction pond water outlet; Clean water basin are realized the temporary of advanced treatment water outlet, are convenient to reuse.
The beneficial effect that the present invention obtains is: (1) the present invention is based on physicochemical techniques, and design science is reasonable, guarantees the good result of waste water advanced processing; (2) the present invention in realizing waste water organic pollutant and colourity is efficient remove in, significantly reduce the hardness of waste water, for the reuse of waste water is laid a good foundation; (3) technology suitability of the present invention is wide, strong shock resistance.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Among the figure: 1, water collecting basin, 2, magnetizing apparatus, 3, one-level dosing mixed reaction pond, 4, the one-level settling tank,
5, secondary dosing mixed reaction pond, 6, second-level settling pond, 7, clean water basin, 8, lift pump, 9, ferrous sulfate,
10, calcium hydroxide, 11, polyacrylamide, 12, Tai-Ace S 150,13, sludge treatment equipment.
Embodiment
Embodiment 1
As shown in Figure 1, according to following steps Waste Water of Pulp and Paper Making from Waste Paper is handled:
The first step is with 1000m
3Waste Water of Pulp and Paper Making from Waste Paper be collected in the water collecting basin 1, after testing, its COD
CrContent is 137.6mg/L;
In second step, waste water is promoted to magnetization processing in the magnetizing apparatus 2 by lift pump 8;
In the 3rd step, the waste water after the magnetization is entered in the one-level dosing mixed reaction pond 3, then according to 0.3kg/m
3Standard in reaction tank, add ferrous sulfate 9, treat that ferrous sulfate 9 mixes fully with waste water after, in reaction tank, add calcium hydroxide 10 again and regulate wastewater pH to 8.5, mix reaction after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide 11, promote the flco cohesion;
The 4th step entered the waste water after the step 3 processing in the one-level settling tank 4, realized a solid-liquid separation of waste water;
In the 5th step, the waste water after separating is entered in the secondary dosing mixed reaction pond 5, according to 0.2kg/m
3Standard in reaction tank, drop into Tai-Ace S 150 12, treat that Tai-Ace S 150 12 and waste water hybrid reaction are after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide 11, promote the flco cohesion;
The 6th step entered the waste water after the step 5 processing in the second-level settling pond 6, realized the secondary solid-liquid separation of waste water;
The 7th goes on foot, and the clear water after the secondary solid-liquid separation is entered in the clean water basin 7 keep in, and is convenient to recycle.
In order to obtain preferably sedimentation effect so that the solid-liquid separation of waste water, waste paper pulping and papermaking advanced waste water treatment technique of the present invention, described one-level settling tank 4 adopts horizontal sedimentation tank, second-level settling pond 6 adopts radial-flow sedimentation tank, and one-level settling tank 4 all is connected with sludge treatment equipment 13 with second-level settling pond 6.
The clear water 5L that extracts in the clean water basin 7 carries out chemical analysis, obtains following data: COD
CrContent is 50.7mg/L.
Embodiment 2
As shown in Figure 1, according to following steps Waste Water of Pulp and Paper Making from Waste Paper is handled:
The first step is with 1500m
3Waste Water of Pulp and Paper Making from Waste Paper be collected in the water collecting basin 1, after testing, its COD
CrContent is 126.9mg/L;
In second step, waste water is promoted to magnetization processing in the magnetizing apparatus 2 by lift pump;
In the 3rd step, the waste water after the magnetization is entered in the one-level dosing mixed reaction pond 3, then according to 0.4kg/m
3Standard in reaction tank, add ferrous sulfate 9, treat that ferrous sulfate 9 mixes fully with waste water after, in reaction tank, add calcium hydroxide 10 again and regulate wastewater pH to 9.0, mix reaction after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide 11, promote the flco cohesion;
The 4th step entered the waste water after the step 3 processing in the one-level settling tank 4, realized a solid-liquid separation of waste water;
In the 5th step, the waste water after separating is entered in the secondary dosing mixed reaction pond 6, according to 0.25kg/m
3Standard in reaction tank, drop into Tai-Ace S 150 12, treat that Tai-Ace S 150 12 and waste water hybrid reaction are after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide 11, promote the flco cohesion;
The 6th step entered the waste water after the step 5 processing in the second-level settling pond 6, realized the secondary solid-liquid separation of waste water;
The 7th goes on foot, and the clear water after the secondary solid-liquid separation is entered in the clean water basin 7 keep in, and is convenient to recycle.
In order to obtain preferably sedimentation effect so that the solid-liquid separation of waste water, waste paper pulping and papermaking advanced waste water treatment technique of the present invention, described one-level settling tank 4 adopts horizontal sedimentation tanks, second-level settling pond 6 adopts tube settlers.
The clear water 8L that extracts in the clean water basin carries out chemical analysis, obtains following data: COD
CrContent is 48.4mg/L.
Claims (3)
1. waste paper pulping and papermaking advanced waste water treatment technique is characterized in that: comprise following concrete steps:
(1) Waste Water of Pulp and Paper Making from Waste Paper is collected in the water collecting basin;
(2) by lift pump waste water is promoted to magnetization processing in the magnetizing apparatus;
(3) waste water after will magnetizing enters in the one-level dosing mixed reaction pond, then according to 0.3-0.4kg/m
3Standard in reaction tank, add ferrous sulfate, treat that ferrous sulfate mixes fully with waste water after, in reaction tank, add calcium hydroxide again and regulate wastewater pH to 8.5-9.0, mix reaction after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide, promote the flco cohesion;
(4) waste water after step (3) processing is entered in the one-level settling tank, realize a solid-liquid separation of waste water;
(5) waste water after will separating enters in the secondary dosing mixed reaction pond, according to 0.2-0.25kg/m
3Standard in reaction tank, drop into Tai-Ace S 150, treat that Tai-Ace S 150 and waste water hybrid reaction are after 15 minutes, according to 1g/m
3Standard in reaction tank, add anionic polyacrylamide, promote the flco cohesion;
(6) waste water after step (5) processing is entered in the second-level settling pond, realize the secondary solid-liquid separation of waste water;
(7) clear water after the secondary solid-liquid separation is entered in the clean water basin temporaryly, be convenient to recycle.
2. waste paper pulping and papermaking advanced waste water treatment technique according to claim 1 is characterized in that: described one-level settling tank and second-level settling pond adopt horizontal sedimentation tank, radial-flow sedimentation tank or tube settler.
3. waste paper pulping and papermaking advanced waste water treatment technique according to claim 1 is characterized in that: described one-level settling tank all is connected with sludge treatment equipment with second-level settling pond.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010136651 CN101786758A (en) | 2010-03-31 | 2010-03-31 | Waste paper pulping and papermaking advanced waste water treatment technique |
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| CN 201010136651 CN101786758A (en) | 2010-03-31 | 2010-03-31 | Waste paper pulping and papermaking advanced waste water treatment technique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351339A (en) * | 2011-06-30 | 2012-02-15 | 德州泰鼎新材料科技有限公司 | Method for improving decorative base paper white water recovery rate and recovery system |
| CN102863114A (en) * | 2012-10-16 | 2013-01-09 | 山东省环境保护科学研究设计院 | Deep treatment method for pulping papermaking wastewater |
| CN103979764A (en) * | 2014-05-06 | 2014-08-13 | 中国科学院武汉岩土力学研究所 | Deep dewatering treatment system for sludge |
| CN104261637A (en) * | 2014-10-20 | 2015-01-07 | 广州恒河环保发展有限公司 | Method for treating firecracker paper making wastewater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201154937Y (en) * | 2007-12-07 | 2008-11-26 | 山东省环境保护科学研究设计院 | Advanced treatment device for pulping waste water for paper making |
-
2010
- 2010-03-31 CN CN 201010136651 patent/CN101786758A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201154937Y (en) * | 2007-12-07 | 2008-11-26 | 山东省环境保护科学研究设计院 | Advanced treatment device for pulping waste water for paper making |
Non-Patent Citations (3)
| Title |
|---|
| 《中华纸业》 201001 刘勃 废纸制浆造纸废水深度处理中型试验 20 1-3 第31卷, 第2期 2 * |
| 《天津造纸》 1986 张淑芬 絮凝剂在板纸废水处理中的应用 12 1-3 , 第4期 2 * |
| 《黑龙江造纸》 2009 刘洋 制浆造纸综合废水深度处理中型实验 12 1-3 , 第2期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351339A (en) * | 2011-06-30 | 2012-02-15 | 德州泰鼎新材料科技有限公司 | Method for improving decorative base paper white water recovery rate and recovery system |
| CN102863114A (en) * | 2012-10-16 | 2013-01-09 | 山东省环境保护科学研究设计院 | Deep treatment method for pulping papermaking wastewater |
| CN103979764A (en) * | 2014-05-06 | 2014-08-13 | 中国科学院武汉岩土力学研究所 | Deep dewatering treatment system for sludge |
| CN104261637A (en) * | 2014-10-20 | 2015-01-07 | 广州恒河环保发展有限公司 | Method for treating firecracker paper making wastewater |
| CN104261637B (en) * | 2014-10-20 | 2015-12-09 | 广州恒河环保发展有限公司 | The treatment process of firecracker paper paper waste |
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Open date: 20100728 |