CN102635013A - Process for recycling papermaking waste water - Google Patents
Process for recycling papermaking waste water Download PDFInfo
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- CN102635013A CN102635013A CN2012100609824A CN201210060982A CN102635013A CN 102635013 A CN102635013 A CN 102635013A CN 2012100609824 A CN2012100609824 A CN 2012100609824A CN 201210060982 A CN201210060982 A CN 201210060982A CN 102635013 A CN102635013 A CN 102635013A
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Abstract
The invention relates to a process for recycling papermaking waste water, which is capable of effectively utilizing effective components in the papermaking waste water. The process comprises the following steps of: firstly, performing concentrated recycling of the papermaking waste water; next, pumping the waste water to an inclined net for filtering by a pump, wherein filter residues mainly containing paper pulp are conveyed back to a papermaking production system; next, conveying sludge and fine fibers in filtrate to a sludge settling tank, wherein a polyaluminium chloride flocculating agent is added in the process; next, conveying clean water above the sludge settling tank to a clean-water reservoir in an overflow manner and then pumping the clean water to a workshop for production by the pump; and finally, pumping the settled sludge to a sludge treater by the pump, and then modifying the sludge so that the sludge is combined with the fibers in the pulp easily; and then mixing the modified sludge with a papermaking pulp in a pulper to obtain mixed pulp for papermaking. Through adoption of the whole process, the papermaking waste water can be recycled in the papermaking production system, and higher production benefit and excellent environmental protection effect can be obtained.
Description
Technical field
The present invention relates to a kind of paper technology, refer in particular to a kind of paper waste environmental protection recycling technology.
Background technology
Various aspects all be unable to do without a large amount of uses of paper in the modern society; Make us all need produce a large amount of paper every day thus; And meeting produces a lot of discharge of wastewater in the paper-making process; These waste water go out to cause very big pollution if directly be discharged into external environment owing to contain numerous harmful substances.But the mechanism that paper waste is now recycled perhaps causes the unordered discharging of a large amount of paper-making industrial waste waters owing to recycle the technology imperfection, has destroyed our rare freshwater resources.Though the technology that exists some paper wastes to utilize at present; But be through with after the waste residue filtering wherein as the one of which; Wherein clear water directly discharges to the external world; Though reduced the pollution to environment like this, wherein waste residue or mud are not but effectively utilized, and have caused waste to a certain degree.
The inventor has proposed a kind of new paper waste environmental protection recycling technology to the problems referred to above.
Summary of the invention
The present invention is directed to the disappearance of prior art existence; Its main purpose provides a kind of paper waste environmental protection recycling technology; This technology can effectively be utilized useful component in the paper waste; Make its recycle in the paper system, thereby obtain higher productivity effect and play better environment protecting.
For realizing above-mentioned purpose, the present invention adopts following technical scheme: a kind of paper waste environmental protection recycling technology, it is characterized in that: this technology comprises the steps:
(1) paper waste is concentrated recovery;
(2) with the paper waste after the above-mentioned recovery with being pumped to oblique net filtration, wherein be that main filter residue is sent the paper system back to paper pulp;
(3) mud and fiber fines in the above-mentioned filtrating behind oblique net filtration are delivered to mudpan, add the polyaluminium chloride flocculant in the process;
(4) with the clear water of above-mentioned mudpan top through overflow to clear water reserviors, send above-mentioned clear water back to workshop with pump again and do industrial water;
(5) with above-mentioned through the deposition mud with being pumped to the Treatment of Sludge device; Then this mud being carried out modification handles; Make its be prone to slurry in fiber combines, then in pulper, above-mentioned mud through the modification processing is mixed acquisition paper grade (stock) mixed slurry with paper making pulp.
After the present invention adopted technique scheme, its beneficial effect was: in this technology at first can through oblique net filtration with valuable be that main filter residue is recycled in papermaking with paper pulp; Secondly at the recyclable again paper water that is used in of clear water that passes through after oblique net filtration and sludge settling are stablized; Recyclable again being used in of mud of then finally handling through modification obtains cycling and reutilization in the paper making pulp; Whole process forms closed circuit recycling system; Make paper waste in this technology, obtain fully effectively recycling; Not only obtain excellent productivity effect, also obtained good environment protecting.
The specific embodiment:
Come the present invention is elaborated below in conjunction with specific embodiment: the specific embodiment of the present invention is a kind of paper waste environmental protection recycling technology, and it is characterized in that: this technology comprises the steps:
(1) paper waste is concentrated recovery;
(2) with the paper waste after the above-mentioned recovery with being pumped to oblique net filtration, wherein be that main filter residue is sent the paper system back to paper pulp;
(3) mud and fiber fines in the above-mentioned filtrating behind oblique net filtration are delivered to mudpan, add the polyaluminium chloride flocculant in the process;
(4) with the clear water of above-mentioned mudpan top through overflow to clear water reserviors, send above-mentioned clear water back to workshop with pump again and do industrial water;
(5) with above-mentioned through the deposition mud with being pumped to the Treatment of Sludge device; Then this mud being carried out modification handles; Make its be prone to slurry in fiber combines, then in pulper, above-mentioned mud through the modification processing is mixed acquisition paper grade (stock) mixed slurry with paper making pulp.
Of the present invention focusing on, in this technology at first can through oblique net filtration with valuable be that main filter residue is recycled in papermaking with paper pulp; Secondly at the recyclable again paper water that is used in of clear water that passes through after oblique net filtration and sludge settling are stablized; Recyclable again being used in of mud of then finally handling through modification obtains cycling and reutilization in the paper making pulp; Whole process forms closed circuit recycling system; Make paper waste in this technology, obtain fully effectively recycling; Not only obtain excellent productivity effect, also obtained good environment protecting.
The above; It only is preferred embodiment of the present invention; Be not that technical scope of the present invention is done any restriction, so every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (1)
1. paper waste environmental protection recycling technology, it is characterized in that: this technology comprises the steps:
(1) paper waste is concentrated recovery;
(2) with the paper waste after the above-mentioned recovery with being pumped to oblique net filtration, wherein be that main filter residue is sent the paper system back to paper pulp;
(3) mud and fiber fines in the above-mentioned filtrating behind oblique net filtration are delivered to mudpan, add the polyaluminium chloride flocculant in the process;
(4) with the clear water of above-mentioned mudpan top through overflow to clear water reserviors, send above-mentioned clear water back to workshop with pump again and do industrial water;
(5) with above-mentioned through the deposition mud with being pumped to the Treatment of Sludge device; Then this mud being carried out modification handles; Make its be prone to slurry in fiber combines, then in pulper, above-mentioned mud through the modification processing is mixed acquisition paper grade (stock) mixed slurry with paper making pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100609824A CN102635013A (en) | 2012-03-09 | 2012-03-09 | Process for recycling papermaking waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100609824A CN102635013A (en) | 2012-03-09 | 2012-03-09 | Process for recycling papermaking waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102635013A true CN102635013A (en) | 2012-08-15 |
Family
ID=46619580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100609824A Pending CN102635013A (en) | 2012-03-09 | 2012-03-09 | Process for recycling papermaking waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102635013A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120423A (en) * | 2016-07-26 | 2016-11-16 | 联盛纸业（龙海）有限公司 | A kind of recovery method of paper pulp fiber |
| CN108275857A (en) * | 2018-01-10 | 2018-07-13 | 浙江山鹰纸业有限公司 | A kind of production technology producing boxboard using technique for packing reuse paper mill sludge |
| CN109224592A (en) * | 2018-10-29 | 2019-01-18 | 云南红塔蓝鹰纸业有限公司 | A kind of clean paper making sewage treatment filter device |
| US10982391B2 (en) | 2016-06-01 | 2021-04-20 | Ecolab Usa Inc. | High-efficiency strength program used for making paper in higher charge demand system |
-
2012
- 2012-03-09 CN CN2012100609824A patent/CN102635013A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10982391B2 (en) | 2016-06-01 | 2021-04-20 | Ecolab Usa Inc. | High-efficiency strength program used for making paper in higher charge demand system |
| CN106120423A (en) * | 2016-07-26 | 2016-11-16 | 联盛纸业（龙海）有限公司 | A kind of recovery method of paper pulp fiber |
| CN108275857A (en) * | 2018-01-10 | 2018-07-13 | 浙江山鹰纸业有限公司 | A kind of production technology producing boxboard using technique for packing reuse paper mill sludge |
| CN109224592A (en) * | 2018-10-29 | 2019-01-18 | 云南红塔蓝鹰纸业有限公司 | A kind of clean paper making sewage treatment filter device |
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Legal Events
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120815 |