CN107089771A - Paper-making effluent treating process - Google Patents
Paper-making effluent treating process Download PDFInfo
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- CN107089771A CN107089771A CN201710394127.XA CN201710394127A CN107089771A CN 107089771 A CN107089771 A CN 107089771A CN 201710394127 A CN201710394127 A CN 201710394127A CN 107089771 A CN107089771 A CN 107089771A
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- Prior art keywords
- waste water
- discharged
- pond
- paper
- treating process
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F3/02—Aerobic processes
-
- 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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- 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)
- Physical Water Treatments (AREA)
Abstract
The present invention discloses a kind of paper-making effluent treating process, comprises the following steps：A, by-pass filtration；B, secondary filtration；C, wastewater temperature is cooled to 50 DEG C of discharges；D, the waste water after cooling is discharged into flocculation basin, adds flocculant；E, treat waste water flocculating precipitation after, waste water is discharged into neutralization pond；F, in neutralization pond waste water add nertralizer；G, the waste water after neutralization is discharged into anaerobic pond carries out Anaerobic Treatment；H, by carry out Anaerobic Treatment after waste water be discharged into aeration tank, waste gas is oxygenated using air blower and efflux aerator；L, the waste water after aeration is discharged into shallow layer flotation machine, the non-solubility pollutant in waste water is removed by shallow layer flotation machine；J, waste water is discharged into discharge pond, is sampled detection to waste water, it is qualified to be discharged afterwards.The present invention is reliable, the cost of discharge of wastewater is effectively reduced, while good purification, the discharge of waste water is up to state standards.
Description
Technical field
The invention belongs to technical field of waste water processing, and in particular to a kind of paper-making effluent treating process.
Background technology
Paper industry is that water consumption is big, heavy-polluted industry, and the organic matter of paper waste discharge, which accounts for China's industrial wastewater, to be had
Machine thing total amount about 25%, severe contamination environment, therefore, paper making wastewater zero discharge are that the production that a water saving and pollution treatment are laid equal stress on is practical
Technology, with preferable economic benefit, it may have obvious social benefit and environmental benefit, be also paper industry realize it is sustainable
The necessary choice of development.
Two production processes of slurrying and copy paper of paper waste in paper industry production.Slurrying is that plant is former
Fiber separation in material comes out, and slurry is made, then through bleaching, this process can produce substantial amounts of paper waste；Copy paper is slurry
Material dilution, shaping, squeezing, drying, are made paper, this process also easily produces paper waste；The paper waste that slurrying is produced,
Pollution is the most serious.Current paper-making effluent treating process, pollutant load is higher, causes cost for wastewater treatment higher, purification
Quality is not good, causes the discharge of waste water to be difficult to reach discharging standards.
The content of the invention
The technical problems to be solved by the invention be for above-mentioned the deficiencies in the prior art there is provided a kind of paper waste at
Science and engineering skill.
The technical solution adopted in the present invention is：A kind of paper-making effluent treating process, comprises the following steps：
A, by-pass filtration, waste water is discharged into by-pass filtration pond, and most suspension solid content in waste water is filtered out；
B, secondary filtration, the waste water after by-pass filtration is discharged into secondary filtration pond, the suspension solid remained in waste water
Thing is all filtered out；
C, cooling, the waste water after secondary filtration is discharged into cooling tower, waste water is cooled down, and treats that wastewater temperature is cooled to 50 DEG C
Discharge；
D, precipitation, the waste water after cooling is discharged into flocculation basin, adds flocculant, produces precipitation, stands one hour；
E, removal precipitation, after treating waste water flocculating precipitation, neutralization pond is discharged into by waste water,
F, acid-base neutralization, nertralizer is added to the waste water in neutralization pond so that the pH value of waste water levels off to 7；
G, anaerobic reaction, the waste water after neutralization is discharged into anaerobic pond and carries out Anaerobic Treatment；
H, aeration, the waste water carried out after Anaerobic Treatment are discharged into aeration tank, using air blower and efflux aerator to waste gas
It is oxygenated；
L, non-solubility pollutant removal, the waste water after aeration is discharged into shallow layer flotation machine, waste water is removed by shallow layer flotation machine
In non-solubility pollutant；
J, inspection, waste water is discharged into discharge pond, and detection is sampled to waste water, qualified to be discharged afterwards.
Preferably, the three layer filtration net being sequentially reduced from top to bottom provided with particle diameter in the by-pass filtration pond.
Preferably, being provided with agitating shaft in the secondary filtration pond, agitating shaft both sides are symmetrically installed with three groups of screen packs.
Preferably, being provided with three phase separator in the anaerobic pond.
Preferably, the nertralizer is sodium hydroxide.
Preferably, adding PAC, PAM medicament in the shallow layer flotation machine running.
The beneficial effects of the present invention are：The present invention is reliable, effectively reduces the cost of discharge of wastewater, purifies simultaneously
Effect is good, and the discharge of waste water is up to state standards.
Embodiment
The present invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1：The present invention comprises the following steps：
A, by-pass filtration, waste water is discharged into by-pass filtration pond, and most suspension solid content in waste water is filtered out；
B, secondary filtration, the waste water after by-pass filtration is discharged into secondary filtration pond, the suspension solid remained in waste water
Thing is all filtered out；
C, cooling, the waste water after secondary filtration is discharged into cooling tower, waste water is cooled down, and treats that wastewater temperature is cooled to 50 DEG C
Discharge；
D, precipitation, the waste water after cooling is discharged into flocculation basin, adds flocculant, produces precipitation, stands one hour；
E, removal precipitation, after treating waste water flocculating precipitation, neutralization pond is discharged into by waste water,
F, acid-base neutralization, nertralizer is added to the waste water in neutralization pond so that the pH value of waste water levels off to 7；
G, anaerobic reaction, the waste water after neutralization is discharged into anaerobic pond and carries out Anaerobic Treatment；
H, aeration, the waste water carried out after Anaerobic Treatment are discharged into aeration tank, using air blower and efflux aerator to waste gas
It is oxygenated；
L, non-solubility pollutant removal, the waste water after aeration is discharged into shallow layer flotation machine, waste water is removed by shallow layer flotation machine
In non-solubility pollutant；
J, inspection, waste water is discharged into discharge pond, and detection is sampled to waste water, qualified to be discharged afterwards.
In above-described embodiment 1, the three layer filtration net being sequentially reduced from top to bottom provided with particle diameter in the by-pass filtration pond.
In above-described embodiment 1, agitating shaft is provided with the secondary filtration pond, agitating shaft both sides are symmetrically installed with three groups of filterings
Net.
In above-described embodiment 1, three phase separator is provided with the anaerobic pond.
In above-described embodiment 1, the nertralizer is sodium hydroxide.
Embodiment 2：It is identical with above-described embodiment 1, wherein adding PAC, PAM medicine in above-mentioned shallow layer flotation machine running
Agent.
Waste water is first discharged into by-pass filtration pond and secondary filtration pond the removal for carrying out suspension solid content, Ran Houtong by the present invention
Supercooling tower is cooled down to waste water, and the waste water after cooling enters in flocculation basin, adds flocculant, produces precipitation, removes waste water
In partial contamination thing, remove the waste water after precipitation and carry out acid-base neutralization, waste water ph values is leveled off to 7, provided most for anaerobic bacteria
Most COD, three be provided with preferable reactiveness, therefore the waste water progress Anaerobic Treatment after neutralization, degrading waste water
Phase separator, can guarantee that after the separation of water, gas, sludge, Anaerobic Treatment, and waste water enters in aeration tank, using air blower and jet
Aerator is oxygenated to waste gas so that most of organic matter is degraded, and then waste water is discharged into shallow layer flotation machine, is gone
Unless dissolubility pollutant, last waste water is discharged into discharge pond, inspected by random samples.
The present invention is reliable, the cost of discharge of wastewater is effectively reduced, while good purification, the discharge of waste water reaches
National standard.
Claims (6)
1. a kind of paper-making effluent treating process, it is characterised in that：Comprise the following steps：
A, by-pass filtration, waste water is discharged into by-pass filtration pond, and most suspension solid content in waste water is filtered out；
B, secondary filtration, the waste water after by-pass filtration is discharged into secondary filtration pond, the suspension solid remained in waste water
Thing is all filtered out；
C, cooling, the waste water after secondary filtration is discharged into cooling tower, waste water is cooled down, and treats that wastewater temperature is cooled to 50 DEG C
Discharge；
D, precipitation, the waste water after cooling is discharged into flocculation basin, adds flocculant, produces precipitation, stands one hour；
E, removal precipitation, after treating waste water flocculating precipitation, neutralization pond is discharged into by waste water,
F, acid-base neutralization, nertralizer is added to the waste water in neutralization pond so that the pH value of waste water levels off to 7；
G, anaerobic reaction, the waste water after neutralization is discharged into anaerobic pond and carries out Anaerobic Treatment；
H, aeration, the waste water carried out after Anaerobic Treatment are discharged into aeration tank, using air blower and efflux aerator to waste gas
It is oxygenated；
L, non-solubility pollutant removal, the waste water after aeration is discharged into shallow layer flotation machine, waste water is removed by shallow layer flotation machine
In non-solubility pollutant；
J, inspection, waste water is discharged into discharge pond, and detection is sampled to waste water, qualified to be discharged afterwards.
2. paper-making effluent treating process according to claim 1, it is characterised in that：In the by-pass filtration pond from top to bottom
The three layer filtration net being sequentially reduced provided with particle diameter.
3. paper-making effluent treating process according to claim 1, it is characterised in that：Provided with stirring in the secondary filtration pond
Axle, agitating shaft both sides are symmetrically installed with three groups of screen packs.
4. paper-making effluent treating process according to claim 1, it is characterised in that：Three phase separation is provided with the anaerobic pond
Device.
5. paper-making effluent treating process according to claim 1, it is characterised in that：The nertralizer is sodium hydroxide.
6. paper-making effluent treating process according to claim 1, it is characterised in that：In the shallow layer flotation machine running
Add PAC, PAM medicament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394127.XA CN107089771A (en) | 2017-05-28 | 2017-05-28 | Paper-making effluent treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394127.XA CN107089771A (en) | 2017-05-28 | 2017-05-28 | Paper-making effluent treating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107089771A true CN107089771A (en) | 2017-08-25 |
Family
ID=59638859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710394127.XA Pending CN107089771A (en) | 2017-05-28 | 2017-05-28 | Paper-making effluent treating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107089771A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102034A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Deep treatment reuse method for cellulose ethanol production wastewater |
| CN103466884A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Process for treating waste paper pulping and papermaking waste water |
| CN105060641A (en) * | 2015-08-11 | 2015-11-18 | 怀宁县天元纸业有限公司 | Paper-making wastewater treatment method |
| CN105481176A (en) * | 2015-12-22 | 2016-04-13 | 潘敏 | Pulping and papermaking wastewater biological treatment system |
| CN205501073U (en) * | 2016-04-18 | 2016-08-24 | 江西弘泰电子信息材料有限公司 | Papermaking wastewater treatment system |
-
2017
- 2017-05-28 CN CN201710394127.XA patent/CN107089771A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102034A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Deep treatment reuse method for cellulose ethanol production wastewater |
| CN103466884A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Process for treating waste paper pulping and papermaking waste water |
| CN105060641A (en) * | 2015-08-11 | 2015-11-18 | 怀宁县天元纸业有限公司 | Paper-making wastewater treatment method |
| CN105481176A (en) * | 2015-12-22 | 2016-04-13 | 潘敏 | Pulping and papermaking wastewater biological treatment system |
| CN205501073U (en) * | 2016-04-18 | 2016-08-24 | 江西弘泰电子信息材料有限公司 | Papermaking wastewater treatment system |
Non-Patent Citations (2)
| Title |
|---|
| 关分派等: "造纸废水的厌氧-好氧-气浮三级处理", 《造纸科学与技术》 * |
| 崔延龄: ""谈化机浆废水处理"", 《中华纸业》 * |
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Application publication date: 20170825 |