CN110590005A - Method for treating papermaking wastewater - Google Patents
Method for treating papermaking wastewater Download PDFInfo
- Publication number
- CN110590005A CN110590005A CN201810606124.2A CN201810606124A CN110590005A CN 110590005 A CN110590005 A CN 110590005A CN 201810606124 A CN201810606124 A CN 201810606124A CN 110590005 A CN110590005 A CN 110590005A
- Authority
- CN
- China
- Prior art keywords
- papermaking wastewater
- treating
- wastewater
- settling
- filtered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
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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
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/52—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
- C02F2001/007—Processes including a sedimentation step
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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
- 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 method for treating papermaking wastewater, which comprises the steps of enabling the papermaking wastewater to pass through a rotational flow desanding pool, screening by a screen, sucking into a first-stage flocculation precipitation device by a pump, adding a flocculating agent and a coagulant aid into the first-stage flocculation precipitation device to form a precipitable substance, removing suspended matters by utilizing vertical flow precipitation, enabling the suspended matters to enter a second-stage flocculation precipitation device, adding the flocculating agent and the coagulant aid into the second-stage flocculation precipitation pool, adjusting the precipitation time to further reduce organic matters in the wastewater, and finally completing the treatment by filtering. According to the invention, the primary flocculation tank and the secondary flocculation tank are combined, and a vertical flow sedimentation process is added between the two tanks, so that the wastewater treatment efficiency can be effectively improved.
Description
Technical Field
The invention relates to the field of sewage treatment equipment, in particular to a treatment method of papermaking wastewater.
Background
The papermaking wastewater refers to wastewater generated in the pulping and papermaking process. Comprises pulping and cooking waste liquor, washing waste water, bleaching waste water, paper machine white water and the like. The papermaking wastewater has complex components and poor biodegradability, belongs to industrial wastewater which is difficult to treat, and is one of main industrial pollution sources in China.
Although the papermaking wastewater is also recovered, treated and reused in the production process, a large amount of wastewater is discharged into a water body, so that the water environment is seriously polluted. The papermaking wastewater has complex components, contains a large amount of lignin, hemicellulose, saccharides and other dissolved matters (residual alkali, inorganic salt, volatile acid, ammonia nitrogen and the like), is discharged into a receiving water body without being treated, not only consumes dissolved oxygen and affects the survival of aquatic organisms, but also changes the physiological and biochemical functions, community results and internal tissues of the organisms, is easy to be attacked by various harmful microorganisms and reduces the biological quantity and quality of the aquatic organisms. Therefore, the papermaking wastewater must be treated to reduce pollution damage to water resources.
Disclosure of Invention
The invention aims to provide a method for treating papermaking wastewater.
A process for treating the waste water generated by paper-making includes such steps as passing the waste water through cyclone sand-removing pool, sieving, pumping it into the first-class flocculating settling unit, adding flocculant and coagulant aid to the first-class flocculating settling unit to form deposit, vertical flow settling to remove suspended substance, secondary flocculating settling, adding flocculant and coagulant aid to the second-class flocculating settling pool, regulating settling time to further reduce organic substances in waste water, and filtering.
And after the water is discharged from the second-stage flocculation precipitation, filtering the water by using a quartz sand filter, and after the quartz sand is filtered, performing secondary filtration by using an active carbon filter.
The papermaking wastewater passes through the grid fence group firstly after passing through the cyclone desanding pool.
The grid fence group is formed by a plurality of grid fences which are arranged in parallel.
The intervals among the grid fences are arranged in an arithmetic progression. The arrangement of the grating fence can effectively reduce large suspended matters in the wastewater, so that the treatment efficiency is improved.
The invention can obtain the water quality reaching the standard by renovating the treatment process.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, the primary flocculation tank and the secondary flocculation tank are combined, and a vertical flow sedimentation process is added between the two tanks, so that the wastewater treatment efficiency can be effectively improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Example 1
A process for treating the waste water generated by paper-making includes such steps as passing the waste water through cyclone sand-removing pool, sieving, pumping it into the first-class flocculating settling unit, adding flocculant and coagulant aid to the first-class flocculating settling unit to form deposit, vertical flow settling to remove suspended substance, secondary flocculating settling, adding flocculant and coagulant aid to the second-class flocculating settling pool, regulating settling time to further reduce organic substances in waste water, and filtering.
Example 2
And after the water is discharged from the second-stage flocculation precipitation, filtering the water by using a quartz sand filter, and after the quartz sand is filtered, performing secondary filtration by using an active carbon filter.
The papermaking wastewater passes through the grid fence group firstly after passing through the cyclone desanding pool.
The grid fence group is formed by a plurality of grid fences which are arranged in parallel.
The intervals among the grid fences are arranged in an arithmetic progression.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A process for treating the waste paper-making water includes such steps as passing the waste paper-making water through cyclone sand-removing pool, sieving, pumping into the first-class flocculating settling unit, adding flocculant and coagulant aid to the first-class flocculating settling unit to form a deposit, vertical flow settling to remove suspended substance, secondary flocculating settling, adding flocculant and coagulant aid to the second-class flocculating settling pool, settling for further reducing organic substances, and filtering.
2. The method for treating papermaking wastewater according to claim 1, wherein the effluent of the second-stage flocculation precipitation is filtered by a quartz sand filter, and the filtered quartz sand is filtered and then filtered again by an active carbon filter.
3. The method for treating papermaking wastewater according to claim 1, wherein the papermaking wastewater passes through the grizzly bank first after passing through the cyclone grit catcher.
4. The method for treating papermaking wastewater according to claim 1, wherein the grid group is formed by arranging a plurality of grids in parallel.
5. The method for treating papermaking wastewater according to claim 1, wherein the intervals between the plurality of grating banks are arranged in an arithmetic series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810606124.2A CN110590005A (en) | 2018-06-13 | 2018-06-13 | Method for treating papermaking wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810606124.2A CN110590005A (en) | 2018-06-13 | 2018-06-13 | Method for treating papermaking wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110590005A true CN110590005A (en) | 2019-12-20 |
Family
ID=68849484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810606124.2A Withdrawn CN110590005A (en) | 2018-06-13 | 2018-06-13 | Method for treating papermaking wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110590005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981036A (en) * | 2020-01-06 | 2020-04-10 | 林泳鑫 | Environment-friendly corrugated box sewage treatment plant |
| CN116573692A (en) * | 2023-04-17 | 2023-08-11 | 淮安恒发纸业有限公司 | Packaging paper production wastewater recycling device and technology |
-
2018
- 2018-06-13 CN CN201810606124.2A patent/CN110590005A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981036A (en) * | 2020-01-06 | 2020-04-10 | 林泳鑫 | Environment-friendly corrugated box sewage treatment plant |
| CN110981036B (en) * | 2020-01-06 | 2022-05-10 | 福建省群英箱聚印刷有限公司 | Environment-friendly corrugated box sewage treatment plant |
| CN116573692A (en) * | 2023-04-17 | 2023-08-11 | 淮安恒发纸业有限公司 | Packaging paper production wastewater recycling device and technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191220 |
|
| WW01 | Invention patent application withdrawn after publication |