CN204325082U - A kind for the treatment of system of papermaking midcourse wastewater - Google Patents
A kind for the treatment of system of papermaking midcourse wastewater Download PDFInfo
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- CN204325082U CN204325082U CN201420754130.XU CN201420754130U CN204325082U CN 204325082 U CN204325082 U CN 204325082U CN 201420754130 U CN201420754130 U CN 201420754130U CN 204325082 U CN204325082 U CN 204325082U
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- pond
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- oxidation ditch
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Abstract
The utility model relates to a kind for the treatment of system of papermaking midcourse wastewater, the treatment system of described papermaking midcourse wastewater comprises grid, water collecting basin, between fiber recovery, mixed reaction pond, preliminary sedimentation tank, hydrolysis acidification pool, oxidation ditch, second pond, mud homogeneous pond, sludge thickener, between sludge dewatering, described grid, water collecting basin, between fiber recovery, mixed reaction pond, preliminary sedimentation tank, hydrolysis acidification pool, oxidation ditch is communicated with successively with second pond, described preliminary sedimentation tank, hydrolysis acidification pool, oxidation ditch, second pond, sludge thickener is all communicated with mud homogeneous pond, be communicated with between sludge thickener with sludge dewatering.Papermaking midcourse wastewater after the utility model process, the effluent quality after process is good, and in water outlet, the contamination index such as COD and BOD, SS all reaches standard of drainage, solves the predicament of current papermaking midcourse wastewater process, is applicable to popularity and uses.
Description
Technical field
The utility model relates to a kind for the treatment of system of papermaking midcourse wastewater.
Background technology
China's paper industry total displacement is only second to chemical industry and iron and steel, occupy the 3rd of industrial sector quantity discharged, and COD (COD and Chemical Oxygen Demand, chemical oxygen demand (COD)) quantity discharged then accounts for 1/3rd of national industrial discharge amount.Therefore, paper industry water pollution control has become the focus of paper industry and even whole society's concern, and becomes the key of the papermaking enterprise survival and development.
Paper waste is one of main industrial pollution source of China, especially the pollutant load such as BOD (biochemical oxygen demand (BOD)), COD (chemical oxygen demand (COD)), SS (suspended solid) of papermaking midcourse wastewater is high, the biodegradability of water is poor, belong to more unmanageable trade effluent, how reasonably processing this kind of waste water is the significant problem that environmental engineering worker faces.
Utility model content
The purpose of this utility model is the defect overcoming prior art existence, provides a kind for the treatment of system of papermaking midcourse wastewater.
The technical scheme realizing the utility model object is: a kind for the treatment of system of papermaking midcourse wastewater, the treatment system of described papermaking midcourse wastewater comprises grid, water collecting basin, between fiber recovery, mixed reaction pond, preliminary sedimentation tank, hydrolysis acidification pool, oxidation ditch, second pond, mud homogeneous pond, sludge thickener, between sludge dewatering, described grid, described water collecting basin, between described fiber recovery, described mixed reaction pond, described preliminary sedimentation tank, described hydrolysis acidification pool, described oxidation ditch is communicated with successively with described second pond, described preliminary sedimentation tank, described hydrolysis acidification pool, described oxidation ditch, described second pond, described sludge thickener is all communicated with described mud homogeneous pond, be communicated with between described sludge thickener with described sludge dewatering.
As optimization, the partial sludge of described second pond is back to described hydrolysis acidification pool, described oxidation ditch, and excess sludge flows into described mud homogeneous pond.
As optimization, in described fiber recovery, be provided with fiber recovery machine.
As optimization, in described sludge dewatering, be provided with belt filter press.
As optimization, the drainage between described sludge thickener, described sludge dewatering is back to described water collecting basin.
The utility model has positive effect: when the utility model uses, middle-stage wastewater is suspended or floating pollutent by bulk in grid filtration sewage, sewage after filtration flows into the water quality and quantity that water collecting basin regulates waste water, the waste water of water collecting basin flows between fiber recovery, fiber recovery machine is had between fiber recovery, the fiber fines in waste water is reclaimed by fiber recovery machine, and by it recycling, waste water after process flows into mixed reaction pond, coagulating agent is added in mixed reaction pond, carry out coagulating in mixed reaction pond after, waste water enters preliminary sedimentation tank, the particle that proportion is larger is removed in preliminary sedimentation tank, the fine suspension etc. that silt and coagulation get off, then sewage flows into hydrolysis acidification pool, the organic substance decomposing of difficult degradation in waste water is micromolecular compound by hydrolysis acidification pool, then waste water enters oxidation ditch reprocessing, through oxidation ditch, organism in sewage is decomposed under the effect of aerobic microbiological, absorption, thus reduce the concentration of pollutent, sewage after oxidation ditch process flows into second pond, by sewage in second pond, mud is separated, precipitation, partial sludge after sedimentation will be back to hydrolysis acidification pool, in oxidation ditch, ensure hydrolysis acidification pool, the amount of active sludge in oxidation ditch, excess sludge just flows into mud homogeneous pond, water qualified discharge after second pond process.
The mud of inflow is carried out homogeneous by mud homogeneous pond, the flow velocity of conditioning of mud, flow, then enters sludge thickener and goes to carry out sludge condensation, and then concentrated mud dewaters through between sludge dewatering, the mud outward transport after dehydration.
Papermaking midcourse wastewater after the utility model process, the effluent quality after process is good, and in water outlet, the contamination index such as COD and BOD, SS all reaches standard of drainage, solves the predicament of current papermaking midcourse wastewater process, is applicable to popularity and uses.
Accompanying drawing explanation
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the schematic flow sheet of the utility model papermaking midcourse wastewater treatment system.
Embodiment
As shown in Figure 1, the utility model is a kind for the treatment of system of papermaking midcourse wastewater, the treatment system of described papermaking midcourse wastewater comprises grid, water collecting basin, between fiber recovery, mixed reaction pond, preliminary sedimentation tank, hydrolysis acidification pool, oxidation ditch, second pond, mud homogeneous pond, sludge thickener, between sludge dewatering, described grid, described water collecting basin, between described fiber recovery, described mixed reaction pond, described preliminary sedimentation tank, described hydrolysis acidification pool, described oxidation ditch is communicated with successively with described second pond, described preliminary sedimentation tank, described hydrolysis acidification pool, described oxidation ditch, described second pond, described sludge thickener is all communicated with described mud homogeneous pond, be communicated with between described sludge thickener with described sludge dewatering.The partial sludge of described second pond is back to described hydrolysis acidification pool, described oxidation ditch, and excess sludge flows into described mud homogeneous pond.Fiber recovery machine is provided with in described fiber recovery.Belt filter press is provided with in described sludge dewatering.Drainage between described sludge thickener, described sludge dewatering is back to described water collecting basin.
Grid is used for bulk in filter sewage and suspends or floating pollutent, and ensure that follow-up structures, water pump, pipeline etc. normally run, the sewage after filtration flows into water collecting basin.
Because the water quality of trade effluent, the water yield change greatly, water collecting basin is used for regulating the water quality and quantity of waste water, and ensure the effect of follow-up structures process, the waste water of water collecting basin flows between fiber recovery.
In between fiber recovery, reclaim the fiber fines in waste water by fiber recovery machine, and by it recycling, the waste water after process flows into mixed reaction pond.
In mixed reaction pond, add coagulating agent, carry out coagulating in mixed reaction pond after, waste water enters preliminary sedimentation tank.
Preliminary sedimentation tank removes the fine suspension etc. that proportion larger particle, silt and coagulation get off, and then sewage flows into hydrolysis acidification pool.
The organic substance decomposing of difficult degradation in waste water is micromolecular compound by hydrolysis acidification pool, and improve biodegradability, and remove partial organic substances, then waste water enters oxidation ditch.
Waste water after hydrolysis acidification pool process, then through oxidation ditch process, after sewage enters oxidation ditch, organism is decomposed, adsorbs under the effect of aerobic microbiological, thus reduce the concentration of pollutent, the sewage after oxidation ditch process flows into second pond.
In second pond, sewage, mud are carried out being separated, precipitating, partial sludge after sedimentation will be back in hydrolysis acidification pool, oxidation ditch, ensure the amount of active sludge in hydrolysis acidification pool, oxidation ditch, excess sludge just flows into mud homogeneous pond, also ensure that the balance of sludge quantity in second pond simultaneously; Water qualified discharge after second pond process.
The mud of inflow is carried out homogeneous by mud homogeneous pond, and the flow velocity of conditioning of mud, flow, then enter sludge thickener.
Sludge thickener, by sludge condensation, reduces the water ratio of mud, the volume of mud is reduced; Mud after sludge thickener process is similar to pasty state, still keeps mobility, and send between sludge dewatering, sludge thickener sewage is out back to water collecting basin again and again processes.
Have belt filter press in sludge dewatering, mud is dewatered further, reduced volume, convenient outward transport, sewage backflow processes again to water collecting basin.
Embodiment:
The water quality of certain pulp and paper making middle-stage wastewater is as follows: Q=5000m
3/ d, pH:6-9, COD (chemical oxygen demand (COD)): 2800mg/L, BOD (biochemical oxygen demand (BOD)): 1000mg/L, SS (suspended solid): 1000mg/L.
When the utility model uses: when the utility model uses, middle-stage wastewater is suspended or floating pollutent by bulk in grid filtration sewage, sewage after filtration flows into the water quality and quantity that water collecting basin regulates waste water, the waste water of water collecting basin flows between fiber recovery, fiber recovery machine is had between fiber recovery, the fiber fines in waste water is reclaimed by fiber recovery machine, and by it recycling, waste water after process flows into mixed reaction pond, coagulating agent is added in mixed reaction pond, carry out coagulating in mixed reaction pond after, waste water enters preliminary sedimentation tank, the particle that proportion is larger is removed in preliminary sedimentation tank, the fine suspension etc. that silt and coagulation get off, then sewage flows into hydrolysis acidification pool, the organic substance decomposing of difficult degradation in waste water is micromolecular compound by hydrolysis acidification pool, then waste water enters oxidation ditch reprocessing, through oxidation ditch, organism in sewage is decomposed under the effect of aerobic microbiological, absorption, thus reduce the concentration of pollutent, sewage after oxidation ditch process flows into second pond, by sewage in second pond, mud is separated, precipitation, partial sludge after sedimentation will be back to hydrolysis acidification pool, in oxidation ditch, ensure hydrolysis acidification pool, the amount of active sludge in oxidation ditch, excess sludge just flows into mud homogeneous pond, water qualified discharge after second pond process.
The mud of inflow is carried out homogeneous by mud homogeneous pond, the flow velocity of conditioning of mud, flow, then enters sludge thickener and goes to carry out sludge condensation, and then concentrated mud dewaters through between sludge dewatering, the mud outward transport after dehydration.
The effluent quality reached: pH=6-9, SS=51.03mg/L, BOD=39.2mg/L, COD=192mg/L
Each processing unit treatment effect is as following table:
| Processing unit | Project | PH | COD | BOD | SS |
| (mg/l) | |||||
| Former water | 6-9 | 2800 | 1000 | 1000 | |
| Grid | Clearance | － | 0 | 0 | 10％ |
| Aqueous concentration | 6-9 | 2800 | 1000 | 900 | |
| Water collecting basin | Clearance | － | 0 | 0 | 0 |
| Aqueous concentration | 6-9 | 2800 | 1000 | 900 | |
| Between fiber recovery | Clearance | － | 30％ | 30％ | 90％ |
| Aqueous concentration | 6-9 | 1960 | 700 | 90 | |
| Mixed reaction pond | Clearance | － | 0％ | 0％ | 0％ |
| Aqueous concentration | 6-9 | 1960 | 700 | 90 | |
| Preliminary sedimentation tank | Clearance | － | 30％ | 20％ | 30％ |
| Aqueous concentration | 6-9 | 1372 | 560 | 63 | |
| Hydrolysis acidification pool | Clearance | － | 30％ | 30％ | 10％ |
| Aqueous concentration | 6-9 | 960.4 | 392 | 56.7 | |
| Oxidation ditch and second pond | Clearance | － | 80％ | 90％ | 10％ |
| Aqueous concentration | 6-9 | 192 | 39.2 | 51.03 | |
| Require target | Aqueous concentration | 6-9 | 200 | 50 | 100 |
As can be seen from this embodiment, papermaking midcourse wastewater after the utility model process, the effluent quality after process is good, and in water outlet, the contamination index such as COD and BOD, SS all reaches standard of drainage, solve the predicament of current papermaking midcourse wastewater process, be applicable to popularity and use.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the treatment system of a papermaking midcourse wastewater, it is characterized in that: the treatment system of described papermaking midcourse wastewater comprises grid, water collecting basin, between fiber recovery, mixed reaction pond, preliminary sedimentation tank, hydrolysis acidification pool, oxidation ditch, second pond, mud homogeneous pond, sludge thickener, between sludge dewatering, described grid, described water collecting basin, between described fiber recovery, described mixed reaction pond, described preliminary sedimentation tank, described hydrolysis acidification pool, described oxidation ditch is communicated with successively with described second pond, described preliminary sedimentation tank, described hydrolysis acidification pool, described oxidation ditch, described second pond, described sludge thickener is all communicated with described mud homogeneous pond, be communicated with between described sludge thickener with described sludge dewatering.
2. the treatment system of a kind of papermaking midcourse wastewater according to claim 1, is characterized in that: the partial sludge of described second pond is back to described hydrolysis acidification pool, described oxidation ditch, and excess sludge flows into described mud homogeneous pond.
3. the treatment system of a kind of papermaking midcourse wastewater according to claim 2, is characterized in that: be provided with fiber recovery machine in described fiber recovery.
4. the treatment system of a kind of papermaking midcourse wastewater according to claim 3, is characterized in that: be provided with belt filter press in described sludge dewatering.
5. the treatment system of a kind of papermaking midcourse wastewater according to any one of claim 1 to 4, is characterized in that: the drainage between described sludge thickener, described sludge dewatering is back to described water collecting basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420754130.XU CN204325082U (en) | 2014-12-04 | 2014-12-04 | A kind for the treatment of system of papermaking midcourse wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420754130.XU CN204325082U (en) | 2014-12-04 | 2014-12-04 | A kind for the treatment of system of papermaking midcourse wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN204325082U true CN204325082U (en) | 2015-05-13 |
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| CN201420754130.XU Expired - Fee Related CN204325082U (en) | 2014-12-04 | 2014-12-04 | A kind for the treatment of system of papermaking midcourse wastewater |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007239A (en) * | 2016-07-22 | 2016-10-12 | 苏州苏沃特环境科技有限公司 | Standard meeting treatment system for tannery wastewater |
| CN106746382A (en) * | 2017-03-22 | 2017-05-31 | 亚太森博(广东)纸业有限公司 | A kind of papermaking wastewater treatment system and its operating method for reducing solid waste discharge |
| CN107253806A (en) * | 2017-08-08 | 2017-10-17 | 邓州市华鑫纸业有限公司 | Pulp and paper industry comprehensive wastewater treatment system |
| CN110194571A (en) * | 2019-05-29 | 2019-09-03 | 邱振权 | Paper mill sludge preprocess method |
| CN111348809A (en) * | 2020-04-13 | 2020-06-30 | 蒋甜 | Sewage treatment process for pulping and papermaking industry |
-
2014
- 2014-12-04 CN CN201420754130.XU patent/CN204325082U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007239A (en) * | 2016-07-22 | 2016-10-12 | 苏州苏沃特环境科技有限公司 | Standard meeting treatment system for tannery wastewater |
| CN106746382A (en) * | 2017-03-22 | 2017-05-31 | 亚太森博(广东)纸业有限公司 | A kind of papermaking wastewater treatment system and its operating method for reducing solid waste discharge |
| CN107253806A (en) * | 2017-08-08 | 2017-10-17 | 邓州市华鑫纸业有限公司 | Pulp and paper industry comprehensive wastewater treatment system |
| CN110194571A (en) * | 2019-05-29 | 2019-09-03 | 邱振权 | Paper mill sludge preprocess method |
| CN111348809A (en) * | 2020-04-13 | 2020-06-30 | 蒋甜 | Sewage treatment process for pulping and papermaking industry |
| CN111348809B (en) * | 2020-04-13 | 2022-07-08 | 亚太森博(广东)纸业有限公司 | Sewage treatment process for pulping and papermaking industry |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20181204 |