CN204097235U - Papermaking wastewater treatment device - Google Patents
Papermaking wastewater treatment device Download PDFInfo
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- CN204097235U CN204097235U CN201420486585.8U CN201420486585U CN204097235U CN 204097235 U CN204097235 U CN 204097235U CN 201420486585 U CN201420486585 U CN 201420486585U CN 204097235 U CN204097235 U CN 204097235U
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Abstract
The utility model provides a kind of papermaking wastewater treatment device, comprise be linked in sequence chemical coagulation device, for remove suspended substance strainer, for remove difficult degradation organic ozone oxidation pond, for regulating equalizing tank and the clean water basin of paper waste pH, described chemical coagulation device comprises the coagulative precipitation tank that chemical coagulation pond is connected with described chemical coagulation pond, in described process of paper-making wastewater treatment, described paper waste flows through chemical coagulation pond successively, coagulation is heavy determines pond, strainer, ozone oxidation pond, equalizing tank and clean water basin.This papermaking wastewater treatment device equipment is simple, improve the utilising efficiency in ozone oxidation pond, thus improve modification to sewage, decolouring, organic pollutent is degraded further, the COD finally realizing waste water is reduced to below 50mg/L, meets emission standard; And less investment, treatment time are short.
Description
Technical field
The utility model relates to a kind of papermaking wastewater treatment device, particularly relate to a kind of technical process simple, process efficient papermaking wastewater treatment device.
Background technology
Pollutant levels in paper waste are high, complicated component, and quantity discharged is large, is one of main source of industrial wastewater pollution.When water pollutions is serious and water resources is day by day in short supply, qualified discharge and the recycling of paper waste become inevitable requirement.
The process of paper waste is based on one-level materializing strategy and secondary biochemical treatment.The water quality of paper waste also exist be difficult to stably reaching standard discharge or recycle problem, be mainly reflected in organic content exceed standard and colourity exceed standard.Paper waste is after secondary biochemical treatment, and biodegradability is lower, its advanced treatment generally based on physico-chemical process, as flocculation sediment, membrane filtration, absorption.But the technique based on flocculation sediment is limited for organic matter removal amount, along with discharge and recycle the raising of standard, the water outlet of such technique meets processing requirements by being difficult to; Processing contaminants removal efficiency based on membrane filtration is high, but investment and working cost higher; And the absorbing process based on charcoal absorption also exists investment and the high problem of working cost equally.
In recent years, chemical oxidation and the application of advanced oxidation in paper waste advanced treatment make the problems referred to above take on a new look to some extent, but still there is some problems.As CN101708927A Chinese patent discloses a kind of advanced treatment method for papermaking waste water of oxidative degradation+flocculation sediment+sand filtration, the method has the advantages such as investment is little, working cost is low, but COD only can arrive the degree lower than 70mg/L after treatment, the discharge of increasingly stringent cannot be met and recycle requirement.
In view of this, the papermaking wastewater treatment device that a kind of improvement is provided is necessary, to solve the problem.
Utility model content
The purpose of this utility model be to provide a kind of technical process simple, process efficient papermaking wastewater treatment device.
For realizing above-mentioned utility model object, the utility model provides a kind of papermaking wastewater treatment device, comprise the chemical coagulation device be linked in sequence, for removing the strainer of suspended substance, for removing the organic catalytic ozonation pond of difficult degradation, for regulating equalizing tank and the clean water basin of paper waste pH, described chemical coagulation device comprises the coagulative precipitation tank that chemical coagulation pond is connected with described chemical coagulation pond, in described process of paper-making wastewater treatment, described paper waste flows through chemical coagulation pond successively, coagulative precipitation tank, strainer, catalytic ozonation pond, equalizing tank and clean water basin.
As further improvement of the utility model, described chemical coagulation pond is provided with whipping appts and adds the adding set of medicament to described chemical coagulation pond.
As further improvement of the utility model, be filled with multiple filtrate in described strainer to form more medium filter.
As further improvement of the utility model, be filled with the filtrate that particle diameter is different in described strainer, described filtrate is selected from the combination of at least two kinds in hard coal, quartz sand, manganese sand shape filtrate.
As further improvement of the utility model, described papermaking wastewater treatment device also comprises and to be connected with described catalytic ozonation pond and to provide the ozone generating-device of ozone to described catalytic ozonation pond.
As further improvement of the utility model, described catalytic ozonation pond is built with solid catalyst.
As further improvement of the utility model, described papermaking wastewater treatment device also comprises and to be connected with described equalizing tank and to provide the pH adjusting agent Preparation tank of pH adjusting agent to described equalizing tank.
The beneficial effects of the utility model are: papermaking wastewater treatment device of the present utility model, first by the pH improving paper waste with the use of remove portion organism of chemical coagulation device and strainer simultaneously, thus reduce the consumption of ozone and improve ozone oxidation effect.Through equalizing tank, paper waste is adjusted to neutrality subsequently, removes remaining ozone simultaneously, make paper waste reach emission standard.This papermaking wastewater treatment device equipment is simple, improve the utilising efficiency in ozone oxidation pond, thus improve modification to sewage, decolouring, organic pollutent is degraded further, the COD finally realizing waste water is reduced to below 50mg/L, meets emission standard; And less investment, treatment time are short.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model papermaking wastewater treatment device.
Fig. 2 is the workflow diagram of the utility model pulping wastewater treatment method.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Refer to shown in Fig. 1 to Fig. 2, the purpose of this utility model be to provide a kind of technical process simple, process efficient papermaking wastewater treatment device and treatment process.
For realizing above-mentioned utility model object, the utility model provides a kind of papermaking wastewater treatment device, along the flow direction of paper waste, described papermaking wastewater treatment device comprises following structure: the chemical coagulation device (non-label) be linked in sequence by pipeline, for remove suspended substance strainer 2, for remove difficult degradation organic catalytic ozonation pond 3, for regulating equalizing tank 4 and the clean water basin 5 of paper waste pH.Described chemical coagulation device comprises the coagulative precipitation tank 12 that chemical coagulation pond 11 is connected with described chemical coagulation pond 11, in described process of paper-making wastewater treatment, described paper waste flows through chemical coagulation pond 11, coagulative precipitation tank 12, strainer 2, catalytic ozonation pond 3, equalizing tank 4 and clean water basin 5 successively.
Described chemical coagulation pond 11 is provided with the first water-in 111, whipping appts 112, the adding set 113 adding medicament to described chemical coagulation pond 11 and the first water outlet 114.For the combination of any one or more that the medicament in described chemical coagulation pond 11 is in caustic soda, white lime, unslaked lime, magnesium oxide.In the present embodiment, first described medicament is configured to the larger solution of concentration or suspension, joins in chemical coagulation pond 11 in adding set 113 after stirring, thus can improve the efficiency of chemical coagulation, saves time.Certainly be different from the present embodiment, also directly medicament can be put in chemical coagulation pond 11, stir under the effect of whipping appts 112, to reach same effect.
Described medicament enters chemical coagulation pond 11 and under stirring chemical reaction occurs with paper waste, remove portion organism and suspended particle, this process can improve the pH of paper waste simultaneously, contributes to the efficiency improving catalytic ozonation in follow-up catalytic ozonation pond 3.Throw out can be produced because paper waste and medicament react in this process, and throw out can sink to bottom chemical coagulation pond 11 by related medicament under gravity, therefore preferably carry out under stirring, thus medicament is fully contacted with paper waste, reaction more fully, completely.Paper waste reacts with medicament under stirring after the first water-in 111 enters chemical coagulation pond 11, produces throw out, flows out enter into coagulative precipitation tank 12 after question response is complete from the first water outlet 114.
Described coagulation sinks to be determined pond 12 and is provided with the second water-in 121, second water outlet 122 be connected with the first water outlet 114.Chemical coagulation pond 11 water outlet containing more throw out enters coagulative precipitation tank 12, leaves standstill for some time, after throw out precipitation, enters into the suspended substance that strainer 2 removes paper waste further.
Described strainer 2 is provided with the 3rd water outlet 22 that the 3rd water-in 21 that is connected with the second water outlet 122 is connected with catalytic ozonation pond 3 and the filtrate 23 filled between the 3rd water-in 21 and the 3rd water outlet 22.In process of paper-making wastewater treatment, paper waste enters strainer 2 from the 3rd water-in 21, flow through filtrate 23 after flow out through the 3rd water outlet 22; And after pulping wastewater treatment, back flushing is carried out so that when reusing to strainer 2, the flow direction of water is contrary.In the present embodiment, described strainer 2 claims columniform cylindrical shell, and the 3rd water-in 21 is positioned at the top of cylindrical shell, and the 3rd water outlet 22 is positioned at the bottom of cylindrical shell, therefore paper waste flows under gravity from top to bottom, does not need very high hydraulic pressure namely to can flow through strainer 2.Certainly be different from other embodiments, strainer 2 also can be arranged in other shapes, and described 3rd water-in 21 also can make corresponding amendment as required to the setting position of the 3rd water outlet 22.
Multiple filtrate 23 is filled with to form more medium filter 2 in described strainer 2.Particularly, be filled with the different filtrate of particle diameter 23 in described strainer 2, described filtrate 23 is selected from the combination of at least two kinds in hard coal, quartz sand, manganese sand even-granular filtrate 23, generally, space between the filtrate 23 that particle diameter is little is little, and space between the large filtrate 23 of particle diameter is large.In the present embodiment, described filtrate 23 is loaded according to proportion and particle diameter, and from the 3rd water-in 21 to the 3rd water outlet 22 direction, the particle diameter of described filtrate 23 reduces successively.Thus the most suspended substance in paper waste is filtered stay the position close near the 3rd water-in 21, to prevent blocking filter 2; And the waste water still containing the suspended substance of part small volume continues to be filtered in the process flowing through filter 2.
Described catalytic ozonation pond 3 comprises the 4th water outlet 32 that the 4th water-in 31 that is connected with the 3rd water outlet 22 of described strainer 2 is connected with equalizing tank 4, solid catalyst 33 between the 4th water-in 31 with the 4th water outlet 32, to be connected and to provide the ozone generating-device 34 of ozone to described catalytic ozonation pond 3 with described catalytic ozonation pond 3.Described solid catalyst 33 is particulate porous loaded catalyst, to increase solid catalyst 33 and the contact area of paper waste, improves catalytic ozonation efficiency.In the present embodiment, described solid catalyst 33 is selected from the mixing of one or more of granular metallic iron, cobalt, nickel, aluminium, titanium, calcium, copper, manganese, silver, chromium, zinc, vanadium and metal oxide iron, cobalt oxide, nickel oxide, aluminum oxide, titanium oxide, calcium oxide, cupric oxide, manganese oxide, silver suboxide, chromic oxide, zinc oxide, vanadium oxide, and described metal oxide is preferably Fe
2o
3, Co
2o
3, NiO, Al
2o
3, TiO
2, CaO, CuO, MnO
2, Ag
2o, Cr
2o
3, ZnO, V
2o
5the mixing of one or more.The outlet in described catalytic ozonation pond 3 of described ozone generating-device 34 is between described 4th water-in 31 and described solid catalyst 33, again through solid catalyst 33 after first mixing with ozone to make described paper waste, thus paper waste is oxidized by the mode of the heterogeneous catalytic ozonation of solid-liquid-gas in catalytic ozonation pond 3, the stability of catalytic ozonation effect can not only be ensured, and effectively prevent the secondary pollution because catalyst loss causes.
Described equalizing tank 4 comprise be connected with described 4th water outlet 32 the 5th water-in 41, be connected and the 5th water outlet 43 providing the pH adjusting agent Preparation tank 42 of pH adjusting agent to described equalizing tank 4, be connected with described clean water basin 5 with described equalizing tank 4.Be provided with dividing plate 44 in described equalizing tank 4 described some dividing plates 44 to be crisscross arranged some cavitys equalizing tank 4 being divided into and communicating, enter to make described paper waste and S-typely after in equalizing tank 4 flow through equalizing tank pond 4 lentamente.By pH adjusting agent, paper waste is adjusted to neutrality, simultaneously residual ozone is discharged from paper waste by the attenuation characteristic of self.
The water outlet of described equalizing tank 4 enters in clean water basin 5 with utilization to be recycled or discharge.
In order to realize the purpose of this utility model, the utility model additionally provides a kind of pulping wastewater treatment method, comprises the steps:
S1: paper waste is introduced the chemical coagulation pond 11 being added with medicament, under agitation react with medicament generation throw out, remove portion organism and suspended particle, improve the pH of paper waste simultaneously, thus when follow-up catalytic ozonation, more hydroxyl radical free radical can be produced on the one hand, improve catalytic ozonation effect; Also can reduce the consumption of ozone on the other hand, reduce costs.
S2: after chemical reaction, a large amount of throw outs is had in the water outlet of chemical coagulation pond 11, remove most throw out by precipitation after entering coagulative precipitation tank 12, to alleviate the work load of subsequent filter 2, also help the recycling of filtrate 23 in strainer 2 simultaneously.
S3: by coagulative precipitation tank 12 water outlet by more medium filter 2, the suspended substance in removing paper waste.In the present embodiment, described paper waste removes suspended substance through more medium filter 2 and obtains strainer 2 water outlet, avoid the consumption of suspended substance to ozone in next step itself, be conducive to the utilization ratio improving ozone, reduce the ozone injected volume in catalytic ozonation pond 3; In addition, this step effectively removes suspended substance and suspended substance can also be avoided to be deposited on the surface of catalyzer in the next step, thus reduces the catalytic efficiency of catalyzer or make catalyzer lose katalysis.
S4: the water outlet of strainer 2 enters catalytic ozonation pond 3, mixes with ozone in gas-liquid mixture, then flows through solid catalyst 33 to be oxidized the organism of removing difficult degradation, to improve the biodegradability energy of paper waste.Compared to the technical scheme utilizing other oxygenants to remove hardly degraded organic substance, the present embodiment utilize catalytic ozonation ability strong, fast without mud, non-secondary pollution, duration of contact is short, processing efficiency is high, the characteristic of not temperature influence etc., while removing hardly degraded organic substance, also reach the effect of sterilization, deodorizing, de-taste, decolouring; It is preferred processing scheme before carrying out biological degradation.
In this process, the amount of the paper waste that the amount of ozone processes as required and internal contamination degree suitably increase and decrease the amount of ozone and control the reaction times.In order to the organism removing difficult degradation up hill and dale takes into account the time of pulping wastewater treatment simultaneously, described paper waste in S4 through the time of catalytic ozonation between 30min ~ 120min, the ozone injected volume required for often liter of paper waste is between 10mg/L-40mg/L.
S5: may remain a small amount of unreacted ozone in the water outlet of catalytic ozonation pond 3, the pH of paper waste is higher simultaneously, and catalytic ozonation pond 3 water outlet enters equalizing tank 4 and removes remaining ozone simultaneously by the pH regulator of paper waste extremely neutrality.In order to raise the efficiency, in this process, can stir to paper waste the decomposition release accelerating ozone.
S6: equalizing tank 4 water outlet enters in clean water basin 5, after testing rear discharge up to standard or recycle.
Below with reference to papermaking wastewater treatment device of the present utility model and treatment process, advanced treatment is carried out to certain enterprise's paper waste water biochemical treatment device water outlet, achieve desirable effect.
By the paper waste of this factory successively through chemical coagulation pond 11, coagulative precipitation tank 12, strainer 2, catalytic ozonation pond 3, equalizing tank 4 and clean water basin 5.In the present embodiment, adopt medicament white lime to be added to the water and be configured to the larger solution of concentration or suspension, join after stirring in adding set 113 in chemical coagulation pond 11.Paper waste and medicament enter into coagulative precipitation tank 12 after reacting under stirring and producing throw out and precipitate.Coagulative precipitation tank 12 water outlet removes suspended substance further through adopting the strainer 2 of quartz sand and ANTHRACITE FILTER MEDIA 23; Strainer 2 water outlet enters catalytic ozonation pond 3, and described catalytic ozonation pond 3 adopts particulate porous loaded catalyst aluminum oxide; Catalytic ozonation pond 3 water outlet enters equalizing tank 4 and regulates pH to remove residual ozone to neutral simultaneously; Equalizing tank 4 water outlet enters clean water basin 5 and detects.In embodiment, paper waste refers to table 1 through the water quality of the forward and backward water inlet of papermaking wastewater treatment device and water outlet.
From table, data are found out, paper waste is after the papermaking wastewater treatment device in the utility model and treatment process, deep treatment method is effective, waste water after process meets reusing sewage and requires (GB/T 19923-2005), also meets papermaking enterprise sewage drainage standard (GB3544-2008) simultaneously.
Example 2: by the paper waste of certain papermaking enterprise successively through chemical coagulation pond 11, coagulative precipitation tank 12, strainer 2, catalytic ozonation pond 3, equalizing tank 4 and clean water basin 5.In the present embodiment, adopt medicament caustic soda and magnesium oxide to be added to the water and be configured to the larger solution of concentration or suspension, join after stirring in adding set 113 in chemical coagulation pond 11.Paper waste and medicament enter into coagulative precipitation tank 12 after reacting under stirring and producing throw out and precipitate.Coagulative precipitation tank 12 water outlet removes suspended substance further through adopting the strainer 2 of quartz sand filter media 23; Strainer 2 water outlet enters catalytic ozonation pond 3, and described catalytic ozonation pond 3 adopts the mixture of particulate porous loaded catalyst aluminum oxide and ferric oxide; Catalytic ozonation pond 3 water outlet enters equalizing tank 4 and regulates pH to remove residual ozone to neutral simultaneously; Equalizing tank 4 water outlet enters clean water basin 5 and detects.In embodiment, paper waste refers to table 2 through the water quality of the forward and backward water inlet of papermaking wastewater treatment device and water outlet.
From table, data are found out, paper waste is after the papermaking wastewater treatment device in the utility model and treatment process, water outlet meets wastewater ocean disposal requirement (GB/T 19923-2005), also meets papermaking enterprise sewage drainage standard (GB3544-2008) simultaneously.
Certainly, be different from as above embodiment, each structure of described papermaking wastewater treatment device is as structures such as strainer 2, catalytic ozonation pond 3, equalizing tanks 4, their moiety and consumption, and paper waste all can adopt other array modes in the time etc. of each structure, reach same effect.
In sum, papermaking wastewater treatment device of the present utility model and treatment process, first by the pH improving paper waste with the use of remove portion organism of chemical coagulation device and strainer 2 simultaneously, thus reduce the consumption of ozone and improve catalytic ozonation effect.Through equalizing tank 4, paper waste is adjusted to neutrality subsequently, removes remaining ozone simultaneously, make paper waste reach emission standard.This papermaking wastewater treatment device equipment is simple, and process is efficient; And less investment, treatment time are short.In addition, this pulping wastewater treatment method, by simple technique, improves the utilising efficiency in catalytic ozonation pond 3, thus improve modification to sewage, decolouring, organic pollutent is degraded further, and the COD finally realizing waste water is reduced to below 50mg/L, meets emission standard.
Above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not depart from the spirit and scope of technical solutions of the utility model.
Claims (7)
1. a papermaking wastewater treatment device, it is characterized in that: comprise be linked in sequence chemical coagulation device, for remove suspended substance strainer, for remove difficult degradation organic catalytic ozonation pond, for regulating equalizing tank and the clean water basin of paper waste pH, described chemical coagulation device comprises the coagulative precipitation tank that chemical coagulation pond is connected with described chemical coagulation pond, in described process of paper-making wastewater treatment, described paper waste flows through chemical coagulation pond, coagulative precipitation tank, strainer, catalytic ozonation pond, equalizing tank and clean water basin successively.
2. papermaking wastewater treatment device according to claim 1, is characterized in that: described chemical coagulation pond is provided with whipping appts and adds the adding set of medicament to described chemical coagulation pond.
3. papermaking wastewater treatment device according to claim 1, is characterized in that: be filled with multiple filtrate in described strainer to form more medium filter.
4. papermaking wastewater treatment device according to claim 3, is characterized in that: be filled with the filtrate that particle diameter is different in described strainer, and described filtrate is selected from the combination of at least two kinds in hard coal, quartz sand, manganese sand shape filtrate.
5. papermaking wastewater treatment device according to claim 1, is characterized in that: described papermaking wastewater treatment device also comprises and to be connected with described catalytic ozonation pond and to provide the ozone generating-device of ozone to described catalytic ozonation pond.
6. papermaking wastewater treatment device according to claim 1, is characterized in that: described catalytic ozonation pond is built with solid catalyst.
7. papermaking wastewater treatment device according to claim 1, is characterized in that: described papermaking wastewater treatment device also comprises and to be connected with described equalizing tank and to provide the pH adjusting agent Preparation tank of pH adjusting agent to described equalizing tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420486585.8U CN204097235U (en) | 2014-08-27 | 2014-08-27 | Papermaking wastewater treatment device |
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|---|---|---|---|
| CN201420486585.8U CN204097235U (en) | 2014-08-27 | 2014-08-27 | Papermaking wastewater treatment device |
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| CN204097235U true CN204097235U (en) | 2015-01-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129871A (en) * | 2014-08-27 | 2014-11-05 | 苏州清然环保科技有限公司 | Papermaking wastewater treatment device and papermaking wastewater treatment method |
| CN111943230A (en) * | 2020-06-29 | 2020-11-17 | 杭州天创环境科技股份有限公司 | Recycling treatment method for industrial wastewater byproduct salt |
-
2014
- 2014-08-27 CN CN201420486585.8U patent/CN204097235U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104129871A (en) * | 2014-08-27 | 2014-11-05 | 苏州清然环保科技有限公司 | Papermaking wastewater treatment device and papermaking wastewater treatment method |
| CN111943230A (en) * | 2020-06-29 | 2020-11-17 | 杭州天创环境科技股份有限公司 | Recycling treatment method for industrial wastewater byproduct salt |
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Address after: 215123 Suzhou Industrial Park, Jiangsu, No. 99 love road, B3 Patentee after: SUZHOU QINGRAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 215123, B3, 9 benevolence Road, Suzhou Industrial Park, Jiangsu, China Patentee before: SUZHOU QINGRAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |