CN205024006U - Slurrying papermaking waste water removes calcium device - Google Patents
Slurrying papermaking waste water removes calcium device Download PDFInfo
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- CN205024006U CN205024006U CN201520768419.1U CN201520768419U CN205024006U CN 205024006 U CN205024006 U CN 205024006U CN 201520768419 U CN201520768419 U CN 201520768419U CN 205024006 U CN205024006 U CN 205024006U
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- pond
- waste water
- naoh
- stripping pond
- anaerobic reactor
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Abstract
Slurrying papermaking waste water removes calcium device, anaerobic reactor's circulating water outlet pipe way and CO2 blow and take off the pond and be connected, install in CO2 and blow the pH controller that takes off the pond and the automatic interlock control of naOH charging pump, the naOH charging pump connect naOH throw with the pipeline and insert CO2 blow take off the pond in, it blows the fan that takes off outside the pond and blows the air releaser that takes off bottom of the pool portion at CO2 and be connected with installing through the air supply pipeline to lie in CO2, CO2 blows and takes off the cell -out water pipe and be connected with circulating water pump. Adopt the utility model discloses the device goes out water to anaerobic reactor's circulation and removes calcium and handle the back, again with the circulating water with intake the mixture, reduce waste water ca2+'s among the anaerobic reactor concentration, because the granular sludge that the calcification of anaerobism granular sludge leads to actively reduces, the bonding between the mud is gatherd and is aroused that the ditch stays and blocks a series of problems such as treatment effect that seriously influence waste water when having solved under the prior art condition high calcium waste water such as anaerobic treatment slurrying papermaking.
Description
Technical field
The utility model belongs to environmental engineering, Effluents Treatment Technique of Paper Mill, particularly a kind of paper-making effluent calcium-removing device.
Background technology
In pulping and paper-making production process, the coating of wastepaper as raw material and papermaking, add to fill out etc. operation all containing or use calcium carbonate in a large number, therefore calcium carbonate is extensively present in paper-making effluent.Due to the effect of microorganism, the organism in waste water is easily converted into the materials such as volatile lipid acid, and itself and calcium carbonate react, and makes calcium change into ionic state from precipitated form, enters in paper-making effluent.At present, anaerobic biological reactor is commonly used to this type of organic wastewater with high concentration of process, and it has the feature such as less energy-consumption, high volumetric loading.Under anaerobic, Pollutants in Wastewater is carried out degraded and removes by the granule sludge in reactor.Granule sludge is the compound system that various microorganism, volatile organic matter and inert inorganic matter form, and usually uses volatile organic content/total solids level (i.e. VSS/TSS), specific methanogenic activity etc. to characterize its biological activity.The appearance of granule sludge in anaerobic reactor, makes its volumetric loading obtain improving more significantly.
Because paper-making effluent calcium ion content is high, in the process of actual use anaerobic reactor, the precipitation of calcium carbonate becomes a common problem.A large amount of accumulations of calcium carbonate, can promote that the bonding between anaerobic grain sludge is assembled, cause ditch to stay and block, and reduce mass-transfer efficiency; Granule sludge ash content also can be caused to raise, and in mud, activeconstituents is progressively eliminated, and inorganic components occupies the large quantity space of reactor, and VSS/TSS value reduces, and specific methanogenic activity reduces; Finally cause reactor for treatment efficiency to reduce, even run failure, have a strong impact on the treatment effect of waste water.
Utilize chemical reagent such as lime-soda softening to remove calcium ion hardness in waste water and infeasible, the method pH controls comparatively strict, and reagent cost is high, also can produce more mud simultaneously, increases the cost of secondary pollution and sludge treatment.In addition, utilize sand filtration fluidized-bed to remove the calcium ion entering anaerobic reactor, because the accumulation of calcium ion particle thing easily blocks sand filter blanket, treating processes can not be carried out continuously, deliming mode that neither be desirable.
Therefore, study a kind of low cost, workable waste water calcium-removing device, to reduce the problems that anaerobic grain sludge calcification causes anaerobic reactor to run, tool is of great significance.
Utility model content
The purpose of this utility model is to provide a kind of paper-making effluent calcium-removing device, is arranged on anaerobic reactor cyclic water outlet pipeline, in order to reduce the negative impact such as anaerobic grain sludge calcification, active reduction that calcium ion hardness is brought.
The technical scheme of utility model:
Paper-making effluent calcium-removing device, comprises by anaerobic reactor, cyclic water outlet pipeline, CO
2stripping pond, air reliever, blower fan, air-supply pipeline, NaOH charging pump, NaOH add pipeline, pH controller, stripping pond outlet pipeline, water circulating pump, circulation suction culvert, intake pump and suction culvert composition.The cyclic water outlet pipeline of anaerobic reactor and CO
2stripping pond connects; Be installed on CO
2pH controller and the automatic interlock of NaOH charging pump in stripping pond control, and NaOH charging pump connects NaOH and adds pipeline and access CO
2in stripping pond; Be positioned at CO
2blower fan outside stripping pond is by air-supply pipeline and be arranged on CO
2air reliever bottom stripping pond connects; CO
2stripping pond rising pipe is connected with water circulating pump.
The cyclic water outlet pipeline of anaerobic reactor and CO
2stripping pond connects, and a part of water outlet of anaerobic reactor enters into CO by cyclic water outlet pipeline
2stripping pond, quantity of circulating water is about 1 ~ 2 times of anaerobic treatment flooding quantity.At CO
2in stripping pond, the hydraulic detention time of cyclic water outlet is about 5 ~ 6 hours.
Be installed on CO
2pH controller and the automatic interlock of NaOH charging pump in stripping pond control, and NaOH charging pump connects NaOH and adds pipeline and access CO
2in stripping pond.By CO
2in stripping pond, the pH value of waste water is set in about 8.0 ~ 8.5, when pH value in pond changes, by the working flow of pH controller interlocking adjustment NaOH charging pump, enters CO to change
2the NaOH flow in stripping pond, thus maintenance waste water ph is in the fluctuation range of about 8.0 ~ 8.5.
Be positioned at CO
2blower fan outside stripping pond is by air-supply pipeline and be arranged on CO
2air reliever bottom stripping pond connects, and during blower fan work, air just enters CO through air-supply pipeline and air reliever
2in stripping pond.Under the stripping effect of air, CO saturated in waste water
2constantly overflow from water, waste water ph is raised.Now, HCO
3 -with CO
3 2-the Chemical Equilibria Systems formed changes, will towards the more CO of generation
3 2-future development.Due to CO
2stripping pond waste water ph is constant between 8.0 ~ 8.5, therefore HCO
3 -constantly change into CO
3 2-.CO
3 2-with the Ca in recirculated water
2+in conjunction with generation CaCO
3precipitation, sinks to mud collection area at the bottom of pond easily, discharges outside pond, make CO finally by pipeline
2the Ca of waste water in stripping pond
2+concentration reduces.
CO
2stripping pond rising pipe is connected with water circulating pump, CO
2the water outlet of stripping pond sends into anaerobic reactor by circulation suction culvert after water circulating pump pressurization; In addition, intake and also send into anaerobic reactor by intake pump through suction culvert.Two strands of water mix bottom anaerobic reactor, and this makes to enter the Ca of waste water in anaerobic reactor
2+concentration is fully diluted and is reduced, guarantee that a large amount of calcification does not occur granule sludge, because certain water inlet calcium ion content is favourable for maintaining the skeleton structure of granule sludge, this guarantees Anaerobic wastewater treatment and even wastewater treatment whole process is continued, carries out normally.
The progressive effect of utility model: adopt the utility model device to carry out except after Calcium treatment the cyclic water outlet of anaerobic reactor, then recirculated water is mixed with water inlet, reduce waste water Ca in anaerobic reactor
2+concentration, the granule sludge activity caused due to anaerobic grain sludge calcification when solving the high calcium waste water such as anaerobic treatment pulping and paper-making under prior art condition reduces, bonding between mud is assembled, cause ditch to stay and block, reduce mass-transfer efficiency, inorganic components occupies the large quantity space of reactor, reactor for treatment efficiency reduces even runs failure, has a strong impact on the series of problems such as the treatment effect of waste water.
Accompanying drawing explanation
Fig. 1 is paper-making effluent calcium-removing device.
In figure: 1-anaerobic reactor, 2-cyclic water outlet pipeline, 3-CO
2stripping pond, 4-air reliever, 5-blower fan, 6-air-supply pipeline, 7-NaOH charging pump, 8-NaOH add pipeline, 9-pH controller, 10-stripping pond outlet pipeline, 11-water circulating pump, 12-circulation suction culvert, 13-intake pump, 14-suction culvert.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
As shown in Figure 1, paper-making effluent calcium-removing device, comprises by anaerobic reactor 1, cyclic water outlet pipeline 2, CO
2stripping pond 3, air reliever 4, blower fan 5, air-supply pipeline 6, NaOH charging pump 7, NaOH add pipeline 8, pH controller 9, stripping pond outlet pipeline 10, water circulating pump 11, circulation suction culvert 12, intake pump 13 and suction culvert 14 and form.The cyclic water outlet pipeline 2 of anaerobic reactor 1 and CO
2stripping pond 3 connects; Be installed on CO
2pH controller 9 and NaOH charging pump 7 automatic interlock in stripping pond 3 control, and NaOH charging pump 7 connects NaOH and adds pipeline 8 and access CO
2in stripping pond 9; Be positioned at CO
2blower fan 5 outside stripping pond 9 is by air-supply pipeline 6 and be arranged on CO
2air reliever 4 bottom stripping pond 3 connects; CO
2stripping pond 3 rising pipe is connected with water circulating pump 11.
The cyclic water outlet pipeline 2 of anaerobic reactor 1 and CO
2stripping pond 3 connects, and a part of water outlet of anaerobic reactor 1 enters into CO by cyclic water outlet pipeline 2
2stripping pond 3.Be installed on CO
2pH controller 9 and NaOH charging pump 7 automatic interlock in stripping pond 3 control, and NaOH charging pump 7 connects NaOH and adds pipeline 8 and access CO
2in stripping pond 3.By CO
2in stripping pond 3, the pH value of waste water is set in about 8.0 ~ 8.5, when pH value in pond changes, is controlled the working flow of adjustment NaOH charging pump 7, enter CO to change by pH controller 9 automatic interlock
2the NaOH flow in stripping pond 3.
Be positioned at CO
2blower fan 5 outside stripping pond 3 is by air-supply pipeline 6 and be arranged on CO
2air reliever 4 bottom stripping pond 3 connects, and when blower fan 5 works, air just enters CO through air-supply pipeline 6 and air reliever 4
2in stripping pond 3.Under the stripping effect of air, CO saturated in waste water
2constantly overflow from water, waste water ph is raised.Now, HCO
3 -with CO
3 2-the Chemical Equilibria Systems formed changes, will towards the more CO of generation
3 2-future development.Due to CO
2stripping pond 3 waste water ph is constant between 8.0 ~ 8.5, therefore HCO
3 -constantly change into CO
3 2-.CO
3 2-with the Ca in recirculated water
2+in conjunction with generation CaCO
3precipitation, sinks to mud collection area at the bottom of pond easily, discharges outside pond, make CO finally by pipeline
2the Ca of waste water in stripping pond 3
2+concentration reduces.
Stripping pond rising pipe 10 is connected with water circulating pump 11, CO
2stripping pond 3 water outlet sends into anaerobic reactor 1 by circulation suction culvert 12 after water circulating pump 11 pressurizes; In addition, intake and also send into anaerobic reactor 1 by intake pump 13 through suction culvert 14.Two strands of water mix bottom anaerobic reactor 1, and this makes the Ca entering waste water in anaerobic reactor 1
2+concentration is fully diluted and is reduced, guaranteeing that a large amount of calcification (certain water inlet calcium ion content is favourable for maintaining the skeleton structure of granule sludge) does not occur granule sludge, this guarantees Anaerobic wastewater treatment and even the full treating processes of waste water is continued, carries out normally.
Anaerobic reactor 1 processes the biogas that produces in waste water process and foul smell delivers to respective treatment system by pipeline respectively.
Claims (1)
1. paper-making effluent calcium-removing device, is characterized in that: the cyclic water outlet pipeline of anaerobic reactor and CO
2stripping pond connects; Be installed on CO
2pH controller and the automatic interlock of NaOH charging pump in stripping pond control, and NaOH charging pump connects NaOH and adds pipeline and access CO
2in stripping pond; Be positioned at CO
2blower fan outside stripping pond is by air-supply pipeline and be arranged on CO
2air reliever bottom stripping pond connects; CO
2stripping pond rising pipe is connected with water circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520768419.1U CN205024006U (en) | 2015-10-07 | 2015-10-07 | Slurrying papermaking waste water removes calcium device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520768419.1U CN205024006U (en) | 2015-10-07 | 2015-10-07 | Slurrying papermaking waste water removes calcium device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205024006U true CN205024006U (en) | 2016-02-10 |
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ID=55256556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520768419.1U Active CN205024006U (en) | 2015-10-07 | 2015-10-07 | Slurrying papermaking waste water removes calcium device |
Country Status (1)
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| CN (1) | CN205024006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110517A (en) * | 2015-10-07 | 2015-12-02 | 中国轻工业长沙工程有限公司 | Pulping and papermaking wastewater calcium removal device |
| CN116789281A (en) * | 2023-07-10 | 2023-09-22 | 中企国云环保科技有限公司 | Softening treatment method for high-hardness high-alkalinity wastewater |
-
2015
- 2015-10-07 CN CN201520768419.1U patent/CN205024006U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110517A (en) * | 2015-10-07 | 2015-12-02 | 中国轻工业长沙工程有限公司 | Pulping and papermaking wastewater calcium removal device |
| CN116789281A (en) * | 2023-07-10 | 2023-09-22 | 中企国云环保科技有限公司 | Softening treatment method for high-hardness high-alkalinity wastewater |
| CN116789281B (en) * | 2023-07-10 | 2024-05-31 | 中企国云环保科技有限公司 | Softening treatment method for high-hardness high-alkalinity wastewater |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |