CN203568923U - Chemical treatment system for paper-making sewage - Google Patents
Chemical treatment system for paper-making sewage Download PDFInfo
- Publication number
- CN203568923U CN203568923U CN201320680241.6U CN201320680241U CN203568923U CN 203568923 U CN203568923 U CN 203568923U CN 201320680241 U CN201320680241 U CN 201320680241U CN 203568923 U CN203568923 U CN 203568923U
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- Prior art keywords
- chemicals dosing
- dosing plant
- ferrous sulfate
- oxidizing tower
- opening
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- Expired - Lifetime
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- 239000000126 substance Substances 0.000 title claims abstract description 69
- 239000010865 sewage Substances 0.000 title abstract description 8
- 239000002351 wastewater Substances 0.000 claims abstract description 36
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 33
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 33
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 30
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000000701 coagulant Substances 0.000 claims abstract description 26
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000012028 Fenton's reagent Substances 0.000 claims abstract description 23
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 69
- 230000001590 oxidative effect Effects 0.000 claims description 46
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 23
- 229940079593 drug Drugs 0.000 claims description 18
- 239000003814 drug Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract 1
- 239000000356 contaminant Substances 0.000 abstract 1
- 238000007872 degassing Methods 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 53
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000002957 persistent organic pollutant Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000010893 paper waste Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- -1 therefore Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to the technical field of paper-making sewage treatment, and in particular relates to a chemical treatment system for paper-making sewage. The system structurally comprises a middle water tank, an oxidation tower, a neutralization degassing tank, a concentrated sulfuric acid adding device, a Fenton reagent adding device, a liquid alkali adding device, a coagulant aid adding device and a control system, wherein the Fenton reagent adding device comprises a hydrogen peroxide adding device and a ferrous sulfate adding device. According to the chemical treatment system provided by the utility model, as the Fenton reagent is added into the oxidation tower, organic contaminants which are hard to degrade in wastewater can be eliminated through oxidation reaction, so that the final effluent can meet the standard of direct discharge, the environment is not polluted, and the system has the advantages of simplicity and easiness in operation, stable operation and low investment cost.
Description
Technical field
The utility model relates to technology for the treatment of of papermaking wastewater field, particularly relates to a kind of medication handling system of papermaking wastewater.
Background technology
At present, the first place that China's paper-making industrial waste water quantity discharged and COD quantity discharged all occupy all types of industries quantity discharged, paper industry is the most serious to the pollution of water surrounding, and it is the matter of utmost importance of China's industrial pollution caused by paper manufacturing control still not, the matter of utmost importance that Ye Shi China trade effluent carries out processing up to standard.Therefore, must carry out advanced treatment to existing paper waste.
In prior art, the treatment process of papermaking wastewater mainly contains following several:
1, physico-chemical process:
1. coagulating sedimentation and filtration method: this method is difficult to reach water outlet COD≤60mg/l, and the sludge quantity producing is large;
2. active carbon adsorption: investment and working cost are higher, and inconvenient operation;
2, membrane separation process: investment and the working cost of the method equipment are high;
3, oxidation style: the working cost that the method produces is higher than 1.5 yuan/ton of water;
4, integrated process, such as electrochemical techniques are combined with BAF etc., but are all limited to laboratory lab scale, and fairly large engineering application has no report.
Therefore, research wastewater treatment efficiency is stable and to invest the sewage disposal technology less, running cost is low, simple to operate extremely important.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of organic pollutant in waste water of can effectively removing is provided, and the medication handling system of simple to operate, stable papermaking wastewater.
The purpose of this utility model is achieved through the following technical solutions:
A medication handling system for papermaking wastewater, comprises intermediate pool, oxidizing tower, the degassed pond of neutralization, vitriol oil chemicals dosing plant, Fenton reagent chemicals dosing plant, liquid caustic soda chemicals dosing plant, coagulant aids chemicals dosing plant and Controlling System, wherein:
Described Fenton reagent chemicals dosing plant comprises hydrogen peroxide chemicals dosing plant and ferrous sulfate chemicals dosing plant;
The output terminal of described intermediate pool is communicated with the input terminus of described oxidizing tower, and the output terminal of described oxidizing tower is communicated with the input terminus in the degassed pond of described neutralization;
The top of described oxidizing tower is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, described vitriol oil opening for feed is communicated with described vitriol oil chemicals dosing plant, described Fenton reagent opening for feed respectively with described hydrogen peroxide chemicals dosing plant and described ferrous sulfate chemicals dosing plant;
The top in the degassed pond of described neutralization is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and described liquid caustic soda feeding opening is communicated with described liquid caustic soda chemicals dosing plant, and described coagulant aids opening for feed is communicated with described coagulant aids chemicals dosing plant.
wherein,described ferrous sulfate chemicals dosing plant comprises ferrous sulfate dissolving tank and ferrous sulfate storage pool, and the pipeline between described ferrous sulfate dissolving tank and described ferrous sulfate storage pool is provided with ferrous sulfate transferpump.
wherein,described oxidizing tower is provided with two.
wherein,on pipeline between described oxidizing tower and the degassed pond of described neutralization, be provided with pH on-line measuring device.
wherein,in described intermediate pool, be provided with liquid level sensor.
wherein,on pipeline between described intermediate pool and described oxidizing tower, be provided with sump pump.
the beneficial effects of the utility model:
The medication handling system of a kind of papermaking wastewater of the present utility model, comprise intermediate pool, oxidizing tower, the degassed pond of neutralization, vitriol oil chemicals dosing plant, Fenton reagent chemicals dosing plant, liquid caustic soda chemicals dosing plant, coagulant aids chemicals dosing plant and Controlling System, wherein: Fenton reagent chemicals dosing plant comprises hydrogen peroxide chemicals dosing plant and ferrous sulfate chemicals dosing plant; The output terminal of intermediate pool is communicated with the input terminus of oxidizing tower, and the output terminal of oxidizing tower is communicated with the input terminus in the degassed pond of neutralization; The top of oxidizing tower is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, and vitriol oil opening for feed is communicated with vitriol oil chemicals dosing plant, Fenton reagent opening for feed respectively with hydrogen peroxide chemicals dosing plant and ferrous sulfate chemicals dosing plant; The top that neutralizes degassed pond is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and liquid caustic soda feeding opening is communicated with liquid caustic soda chemicals dosing plant, and coagulant aids opening for feed is communicated with coagulant aids chemicals dosing plant.During sewage disposal, the paper waste that is stored in intermediate pool is delivered to oxidizing tower, vitriol oil chemicals dosing plant is acid to the pH that adds vitriol oil regulating water quality in oxidizing tower, and then hydrogen peroxide chemicals dosing plant and ferrous sulfate chemicals dosing plant add oxygenant H respectively in oxidizing tower
2o
2with catalyst Fe SO
4there is Fenton's reaction (oxidizing reaction), by the organic pollutant oxygenolysis in waste water, thereby the organic pollutant of the hard degradation in removal waste water, by the oxidizing tower waste water out degassed pond of process neutralization again, liquid caustic soda chemicals dosing plant is to adding liquid caustic soda in it to regulate pH to neutral, and a small amount of bubble in waste water is sloughed, simultaneously, coagulant aids chemicals dosing plant adds coagulant aids in the degassed pond of neutralization, and the iron mud producing in this coagulant aids and Fenton's reaction process flocculation occurs and forms sludge settling.Compared with prior art, drug handling device of the present utility model adds Fenton reagent to oxidizing tower, by oxidizing reaction, the organic pollutant of the hard degradation in waste water is got rid of, thereby make the CODcr of final outflow water and suspended solid density loss to the standard that can directly discharge, can be to environment, and whole drug handling device have advantages of simple to operation, stable, cost of investment is low.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the utility model, but content in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the system architecture schematic diagram of the medication handling system of a kind of papermaking wastewater of the present utility model.
Fig. 1 comprises:
1---intermediate pool, 2---sump pump, 3---oxidizing tower, 4------vitriol oil chemicals dosing plant, 6---hydrogen peroxide storage tank, 7---ferrous sulfate storage pool, 71---ferrous sulfate dissolving tank, 72---ferrous sulfate storage pool, 8---liquid caustic soda chemicals dosing plant, 9---the coagulant aids chemicals dosing plant that neutralizes degassed pond, 5.
Embodiment
With the following Examples and accompanying drawing the utility model is described in further detail.
The medication handling system of a kind of papermaking wastewater of the present utility model, as shown in Figure 1, comprise intermediate pool 1, oxidizing tower 3, neutralize degassed pond 4, vitriol oil chemicals dosing plant 5, Fenton reagent chemicals dosing plant, liquid caustic soda chemicals dosing plant 8, coagulant aids chemicals dosing plant 9 and Controlling System, wherein: Fenton reagent chemicals dosing plant comprises hydrogen peroxide chemicals dosing plant 6 and ferrous sulfate chemicals dosing plant 7.
The output terminal of intermediate pool 1 is communicated with the input terminus of oxidizing tower 3, and 3 output terminals of oxidizing tower are communicated with the input terminus in the degassed pond 4 of neutralization.
The top of oxidizing tower 3 is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, and vitriol oil opening for feed is communicated with vitriol oil chemicals dosing plant 5, Fenton reagent opening for feed respectively with hydrogen peroxide chemicals dosing plant 6 and ferrous sulfate chemicals dosing plant 7;
The top that neutralizes degassed pond 1 is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and liquid caustic soda feeding opening is communicated with liquid caustic soda chemicals dosing plant 8, and coagulant aids opening for feed is communicated with coagulant aids chemicals dosing plant 9.
Concrete, ferrous sulfate chemicals dosing plant 7 comprises ferrous sulfate dissolving tank 71 and ferrous sulfate storage pool 72, the pipeline between ferrous sulfate dissolving tank 71 and ferrous sulfate storage pool 72 is provided with ferrous sulfate transferpump.
Concrete, oxidizing tower 3 arranges two, to improve the treatment capacity to waste water.
Concrete, on the pipeline between intermediate pool and oxidizing tower, be provided with sump pump 2.
It is stably to enter oxidizing tower 3 in order to ensure waste water that intermediate pool 1 is set, and guarantees the steady running of Sewage treatment systems.
Oxidizing tower 3 carries out deep oxidation processing to sewage:
Vitriol oil chemicals dosing plant 8 first drops into the vitriol oil by the vitriol oil opening for feed at oxidizing tower 3 tops, regulates pH to acid, and then ferrous sulfate storage pool 9 and hydrogen peroxide storage tank 10 add catalyst Fe SO by Fenton reagent opening for feed to oxidizing tower 3 respectively
4with oxygenant H
2o
2, under acidic conditions, there is Fenton's reaction (oxidizing reaction) in the two, by the organic pollutant oxygenolysis in waste water, thus the organic pollutant of the hard degradation in removal waste water.
By oxidizing tower 3 waste water out, be acid, therefore, liquid caustic soda chemicals dosing plant 11 adds liquid caustic soda adjusting pH to neutral, to meet the pH requirement of water outlet in the degassed pond 4 of neutralization, neutralize degassed pond and also play the effect of sloughing a small amount of gas in waste water, due to the Fe producing in Fenton's reaction process
3+it itself is exactly extraordinary coagulating agent, so 12 of coagulant aids chemicals dosing plants need to add a small amount of coagulant aids polyacrylamide in the degassed pond 4 of neutralization, can make the iron mud generation coagulating in waste water, meanwhile, colourity, solid suspension substrate concentration (SS) and colloid are also had to extraordinary removal function.
In the present embodiment, oxidizing tower 3 and neutralize on the pipeline between degassed pond 4 and be provided with pH on-line measuring device 13, thereby the pH in on-line monitoring oxidizing tower 3, to control the dosage of vitriol oil chemicals dosing plant 8, ferrous sulfate storage pool 9 and hydrogen peroxide storage tank 10.
Concrete, in intermediate pool 1, be provided with liquid level sensor, when intermediate pool 1 interior liquid level lower than set(ting)value time, waste water pump 2 quits work.
The principle of work of the medication handling system of papermaking wastewater of the present utility model is as follows:
During sewage disposal, the paper waste that is stored in intermediate pool 1 is delivered to oxidizing tower 3, and vitriol oil chemicals dosing plant 8 regulates pH to acidic conditions, then to the interior interpolation Fenton reagent of oxidizing tower 3, oxygenant H wherein to the interior interpolation vitriol oil of oxidizing tower 3
2o
2with catalyst Fe SO
4there is oxidizing reaction, by the organic pollutant oxygenolysis in waste water, thereby the organic pollutant of the hard degradation in removal waste water, by the oxidizing tower 3 waste water out degassed pond 4 of process neutralization again, liquid caustic soda chemicals dosing plant adds liquid caustic soda in 11 to its to regulate pH to neutral, and a small amount of bubble in waste water is sloughed, simultaneously, coagulant aids chemicals dosing plant 12 adds coagulant aids polyacrylamide in the degassed pond 4 of neutralization, there is flocculation and form sludge settling in the iron mud producing in itself and Fenton's reaction process, thereby is further discharged by subsequent handling.
Compared with prior art, drug handling device of the present utility model adds Fenton reagent to oxidizing tower, by oxidizing reaction, the organic pollutant of the hard degradation in waste water is got rid of, thereby make the CODcr of final outflow water and suspended solid density loss to the standard that can directly discharge, can be to environment, and whole drug handling device have advantages of simple to operation, stable, cost of investment is low.
Finally should be noted that; above embodiment is the restriction for the technical solution of the utility model is described but not to the utility model protection domain only; although the utility model is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1. a medication handling system for papermaking wastewater, is characterized in that: comprise intermediate pool, oxidizing tower, the degassed pond of neutralization, vitriol oil chemicals dosing plant, Fenton reagent chemicals dosing plant, liquid caustic soda chemicals dosing plant, coagulant aids chemicals dosing plant and Controlling System, wherein:
Described Fenton reagent chemicals dosing plant comprises hydrogen peroxide chemicals dosing plant and ferrous sulfate chemicals dosing plant;
The output terminal of described intermediate pool is communicated with the input terminus of described oxidizing tower, and the output terminal of described oxidizing tower is communicated with the input terminus in the degassed pond of described neutralization;
The top of described oxidizing tower is respectively arranged with vitriol oil opening for feed and Fenton reagent opening for feed, described vitriol oil opening for feed is communicated with described vitriol oil chemicals dosing plant, described Fenton reagent opening for feed respectively with described hydrogen peroxide chemicals dosing plant and described ferrous sulfate chemicals dosing plant;
The top in the degassed pond of described neutralization is provided with liquid caustic soda feeding opening and coagulant aids opening for feed, and described liquid caustic soda feeding opening is communicated with described liquid caustic soda chemicals dosing plant, and described coagulant aids opening for feed is communicated with described coagulant aids chemicals dosing plant.
2. the medication handling system of a kind of papermaking wastewater according to claim 1, it is characterized in that: described ferrous sulfate chemicals dosing plant comprises ferrous sulfate dissolving tank and ferrous sulfate storage pool, the pipeline between described ferrous sulfate dissolving tank and described ferrous sulfate storage pool is provided with ferrous sulfate transferpump.
3. the medication handling system of a kind of papermaking wastewater according to claim 1, is characterized in that: described oxidizing tower is provided with two.
4. the medication handling system of a kind of papermaking wastewater according to claim 1, is characterized in that: on the pipeline between described oxidizing tower and the degassed pond of described neutralization, be provided with pH on-line measuring device.
5. the medication handling system of a kind of papermaking wastewater according to claim 1, is characterized in that: in described intermediate pool, be provided with liquid level sensor.
6. the medication handling system of a kind of papermaking wastewater according to claim 1, is characterized in that: on the pipeline between described intermediate pool and described oxidizing tower, be provided with sump pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680241.6U CN203568923U (en) | 2013-10-31 | 2013-10-31 | Chemical treatment system for paper-making sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680241.6U CN203568923U (en) | 2013-10-31 | 2013-10-31 | Chemical treatment system for paper-making sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203568923U true CN203568923U (en) | 2014-04-30 |
Family
ID=50536667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320680241.6U Expired - Lifetime CN203568923U (en) | 2013-10-31 | 2013-10-31 | Chemical treatment system for paper-making sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203568923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723869A (en) * | 2019-10-09 | 2020-01-24 | 合肥停弦渡生物科技有限公司 | Improved Fenton sewage treatment method based on pre-oxidant |
-
2013
- 2013-10-31 CN CN201320680241.6U patent/CN203568923U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723869A (en) * | 2019-10-09 | 2020-01-24 | 合肥停弦渡生物科技有限公司 | Improved Fenton sewage treatment method based on pre-oxidant |
| CN110723869B (en) * | 2019-10-09 | 2021-07-02 | 合肥停弦渡生物科技有限公司 | Improved Fenton sewage treatment method based on pre-oxidant |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |