CN104724858A - Chemical mother solution wastewater treatment facility and treatment method - Google Patents
Chemical mother solution wastewater treatment facility and treatment method Download PDFInfo
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- CN104724858A CN104724858A CN201510150807.8A CN201510150807A CN104724858A CN 104724858 A CN104724858 A CN 104724858A CN 201510150807 A CN201510150807 A CN 201510150807A CN 104724858 A CN104724858 A CN 104724858A
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- tank
- reaction tank
- waste water
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- mother liquor
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Abstract
The invention relates to a chemical mother solution wastewater treatment facility and treatment method. The treatment facility comprises a regulating tank, a potassium permanganate oxidizing reaction tank, a neutralizing coagulation tank, a preliminary sedimentation tank, a Fenton oxidizing reaction tank, a secondary sedimentation tank and a decolorization/denitrification reaction tank, wherein the regulating tank, potassium permanganate oxidizing reaction tank, neutralizing coagulation tank, preliminary sedimentation tank, Fenton oxidizing reaction tank, secondary sedimentation tank and decolorization/denitrification reaction tank are sequentially connected to form the integrated treatment facility. The chemical mother solution wastewater treatment facility and treatment method combine the advantages of preoxidation, coagulation, advanced oxidation and decolorization/denitrification treatment. In the chemical mother solution wastewater treated by the facility, ammonia nitrogen, chroma and COD (chemical oxygen demand) can be effectively degraded. The treated water can satisfy the requirements for discharge into the pipe network. The method has the advantages of low treatment cost and the like, and is simple to operate and easy to control.
Description
Technical field
The present invention relates to a kind of sewage treatment equipment and method, be specifically related to a kind for the treatment of facility and treatment process thereof of chemical industry mother liquor waste water, belong to chemical wastewater treatment technical field.
Background technology
Along with rapid development of economy, Chemicals production process is aggravated the pollution of environment, also more prevalent and serious to the harm of human health, the organic substance of wherein particularly discharging in fine chemical product (as pharmacy, dyestuff, daily use chemicals etc.) production process is all the material that complex structure, poisonous and harmful and biology are difficult to degrade mostly.Therefore, the difficulty of chemical wastewater treatment is larger.
The essential characteristic of wastewater from chemical industry is: (1) water-quality constituents is complicated, and greatly, by product is many, and reaction raw materials is often the compound of solvent based material or ring texture, adds the intractability of waste water in water yield change; (2) Pollutants in Wastewater content is high, and this is because a large amount of solvent mediums of raw material reaction incomplete sum raw material or use in producing enter caused by waste water system; (3) hazardous and noxious substances is many, has many organic pollutants to be poisonous and hazardous to microorganism, as halogen compounds, nitro-compound, the dispersion agent with germicidal action or tensio-active agent etc. in Fine Chemistry Wastewater; (4) bio-refractory material is many, and B/C is low, and biodegradability is poor; (5) chroma in waste water is high, and pH value mostly is strongly-acid or strong basicity
(6) specific conductivity is high, and specific conductivity can up to 200000-300000 μ s/cm
Because chemical industry mother liquor waste water changes greatly, conductance is high, and biochemical is poor, causes biochemical system unstable.At present, a kind of equipment and process carrying out effectively process specially for chemical industry mother liquor waste water waste water is not yet had.
Therefore, for solving the problems of the technologies described above, necessary treatment facility and the treatment process thereof providing a kind of chemical industry mother liquor waste water of innovation, to overcome described defect of the prior art.
Summary of the invention
For solving the problems of the technologies described above, one is the object of the present invention is to provide can effectively to realize organism (COD
cr) and the treatment facility of chemical industry mother liquor waste water of efficient removal of colourity.
Another object of the present invention is to the treatment process that a kind of chemical industry mother liquor waste water is provided.
For realizing above-mentioned first object, the technical scheme that the present invention takes is: a kind for the treatment of facility of chemical industry mother liquor waste water, it comprise equalizing tank, potassium permanganate oxidation reaction tank, in and coagulation basin, preliminary sedimentation tank, Fenton oxidation reaction tank, second pond and decolorization and denitrification reaction tank; Wherein, described equalizing tank, potassium permanganate oxidation reaction tank, in be connected successively with coagulation basin, preliminary sedimentation tank, Fenton oxidation reaction tank, second pond, decolorization and denitrification reaction tank and to form an integrated sewage treatment equipment.
The treatment facility of chemical industry mother liquor waste water of the present invention is set to further: be equipped with a mud vent pipe in the bottom of described preliminary sedimentation tank and second pond.
For realizing above-mentioned second object, the technical scheme that the present invention takes is: a kind for the treatment of process of chemical industry mother liquor waste water, and it comprises following processing step:
1), chemical industry mother liquor waste water is disposed to equalizing tank, and in equalizing tank the residence time be 30 hours;
2), afterwards waste water is entered potassium permanganate oxidation reaction tank, and add KMnO in potassium permanganate oxidation reaction tank
4, reaction times 30min;
3), during the water outlet of potassium permanganate oxidation reaction tank enters and coagulation basin, and in and interior feeding lime and PAM;
4), by and the water outlet of coagulation basin enter preliminary sedimentation tank and carry out mud-water separation, be 6 hours in the residence time of preliminary sedimentation tank;
5), the water outlet of preliminary sedimentation tank enters Fenton oxidation reaction tank, and adds hydrogen peroxide, ferrous sulfate, 20 hours reaction times;
6), enter second pond after the water outlet feeding lime of Fenton oxidation reaction tank and PAM and carry out mud-water separation, the second pond residence time is 8 hours;
7), second pond supernatant liquor sheet enters decolorization and denitrification reaction tank, qualified discharge after the process of clorox decolorization and denitrification.
The treatment process of chemical industry mother liquor waste water of the present invention is further: described step 2) in reaction pH be between 1-2; KMnO
4dosage be 100mg/L.
The treatment process of chemical industry mother liquor waste water of the present invention is further: to react pH in described step 3) after feeding lime be 6-7, PAM concentration be 0.5 ‰, PAM dosage is 5ppm.
The treatment process of chemical industry mother liquor waste water of the present invention is further: the reaction pH in described step 4) is 3-4, and the concentration of hydrogen peroxide is 30%, and dosage is 50ml/L, and ferrous sulfate dosage is 8g/L.
The treatment process of chemical industry mother liquor waste water of the present invention is further: to react pH in described step 6) after feeding lime be 7-8, PAM concentration be 0.5 ‰, PAM dosage is 2ppm.
The treatment process of chemical industry mother liquor waste water of the present invention also can be: in the chlorine bleach liquor that described step 7) adds, and the mass percentage of chlorine is 12%, and dosage is 1 ‰.
Compared with prior art, the present invention has following beneficial effect: the treatment facility of chemical industry mother liquor waste water of the present invention and treatment process thereof combine the advantage of preoxidation, coagulation, advanced oxidation and decolorization and denitrification process, through the chemical industry mother liquor waste water of this device processes, can effective degradation of ammonia nitrogen, colourity and COD, process can reach the requirement entering pipe network, has that processing cost is low, simple to operate is easy to the advantages such as control.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the treatment facility of chemical industry mother liquor waste water of the present invention.
Embodiment
Refer to shown in Figure of description 1, the present invention is a kind for the treatment of facility of chemical industry mother liquor waste water, its by equalizing tank 1, potassium permanganate oxidation reaction tank 2, in and a few part such as coagulation basin 3, preliminary sedimentation tank 4, Fenton oxidation reaction tank 5, second pond 6 and decolorization and denitrification reaction tank 7 form.
Wherein, described equalizing tank 1, potassium permanganate oxidation reaction tank 2, in be connected successively with coagulation basin 3, preliminary sedimentation tank 4, Fenton oxidation reaction tank 5, second pond 6 and decolorization and denitrification reaction tank 7 and to form an integrated sewage treatment equipment.Be equipped with a mud vent pipe 8 and 9 in the bottom of described preliminary sedimentation tank 4 and second pond 6, described mud vent pipe 8 and 9 is connected to a sludge thickener (not shown).
Adopt the processing step of the treatment facility process chemical industry mother liquor waste water of chemical industry mother liquor waste water of the present invention as follows:
1), chemical industry mother liquor waste water is disposed to equalizing tank 1, and in equalizing tank 1 residence time be 30 hours;
2), afterwards waste water is entered potassium permanganate oxidation reaction tank 2, and add KMnO in potassium permanganate oxidation reaction tank 2
4, reaction times 30min; The reaction pH of this step is between 1-2; KMnO
4dosage be 100mg/L.
3), during the water outlet of potassium permanganate oxidation reaction tank 2 enters and coagulation basin 3, and in and feeding lime and PAM in coagulation basin 3; To react pH after feeding lime be 6-7, PAM concentration be 0.5 ‰, PAM dosage is 5ppm.
4), by and the water outlet of coagulation basin 3 enter preliminary sedimentation tank 4 and carry out mud-water separation, be 6 hours in the residence time of preliminary sedimentation tank 4.
5), the water outlet of preliminary sedimentation tank 4 enters Fenton oxidation reaction tank 5, and adds hydrogen peroxide, ferrous sulfate, 20 hours reaction times; The reaction pH of this step is 3-4, and the concentration of hydrogen peroxide is 30%, and dosage is 50ml/L, and ferrous sulfate dosage is 8g/L.
6), enter second pond 6 after the water outlet feeding lime of Fenton oxidation reaction tank 5 and PAM and carry out mud-water separation, second pond 6 residence time is 8 hours; To react pH after feeding lime be 7-8, PAM concentration be 0.5 ‰, PAM dosage is 2ppm.
7), second pond 6 supernatant liquor enters decolorization and denitrification reaction tank 7, qualified discharge after the process of clorox decolorization and denitrification; In the chlorine bleach liquor added, the mass percentage of chlorine is 12%, and dosage is 1 ‰.
Before chemical industry mother liquor waste water enters equalizing tank 1 process, its water-quality guideline is as follows: COD
cr: 12080mg/L; Ammonia nitrogen: 260mg/L, colourity 3000 times.
After the process of KMnO4 oxidizing reaction pond 2, water-quality guideline is as follows: COD
cr: 11020mg/L; Ammonia nitrogen: 220 mg/L, colourity 2500 times.
After adding lime and PAM flocculation, and after entering preliminary sedimentation tank 3 precipitation, water-quality guideline is as follows: COD
cr: 6100mg/L; Ammonia nitrogen: 120 mg/L, colourity 1200 times.
After Fenton oxidation pond 4 processes, water-quality guideline is as follows: COD
cr: 720 mg/L; Ammonia nitrogen: 80 mg/L, colourity 160 times.
Water outlet is through second pond 7, and water-quality guideline is as follows: COD
cr: 420 mg/L; Ammonia nitrogen: 60 mg/L, colourity 60 times.
Water outlet is through decolorization and denitrification pond 7, and water-quality guideline is as follows: COD
cr: 410 mg/L; Ammonia nitrogen: 30 mg/L, colourity 20 times.
Therefore, as can be seen from above-mentioned data: wastewater from chemical industry, through above-mentioned art breading, can draw to draw a conclusion: the COD of water outlet, colourity and ammonia nitrogen can be reduced by the method.
Above embodiment is only the preferred embodiment of this creation, and not in order to limit this creation, any amendment made within all spirit in this creation and principle, equivalent replacement, improvement etc., within the protection domain that all should be included in this creation.
Claims (8)
1. a treatment facility for chemical industry mother liquor waste water, is characterized in that: comprise equalizing tank, potassium permanganate oxidation reaction tank, in and coagulation basin, preliminary sedimentation tank, Fenton oxidation reaction tank, second pond and decolorization and denitrification reaction tank; Wherein, described equalizing tank, potassium permanganate oxidation reaction tank, in be connected successively with coagulation basin, preliminary sedimentation tank, Fenton oxidation reaction tank, second pond, decolorization and denitrification reaction tank and to form an integrated sewage treatment equipment.
2. the treatment facility of chemical industry mother liquor waste water as claimed in claim 1, is characterized in that: be equipped with a mud vent pipe in the bottom of described preliminary sedimentation tank and second pond.
3. a treatment process for chemical industry mother liquor waste water, is characterized in that: comprise following processing step:
1), chemical industry mother liquor waste water is disposed to equalizing tank, and in equalizing tank the residence time be 30 hours;
2), afterwards waste water is entered potassium permanganate oxidation reaction tank, and add KMnO in potassium permanganate oxidation reaction tank
4, reaction times 30min;
3), during the water outlet of potassium permanganate oxidation reaction tank enters and coagulation basin, and in and interior feeding lime and PAM;
4), by and the water outlet of coagulation basin enter preliminary sedimentation tank and carry out mud-water separation, be 6 hours in the residence time of preliminary sedimentation tank;
5), the water outlet of preliminary sedimentation tank enters Fenton oxidation reaction tank, and adds hydrogen peroxide, ferrous sulfate, 20 hours reaction times;
6), enter second pond after the water outlet feeding lime of Fenton oxidation reaction tank and PAM and carry out mud-water separation, the second pond residence time is 8 hours;
7), second pond supernatant liquor sheet enters decolorization and denitrification reaction tank, qualified discharge after the process of clorox decolorization and denitrification.
4. the treatment facility of chemical industry mother liquor waste water as claimed in claim 4, is characterized in that: described step 2) in reaction pH be between 1-2; KMnO
4dosage be 100mg/L.
5. the treatment facility of chemical industry mother liquor waste water as claimed in claim 3, is characterized in that: to react pH in described step 4) after feeding lime be 6-7, PAM concentration be 0.5 ‰, PAM dosage is 5ppm.
6. the treatment facility of chemical industry mother liquor waste water as claimed in claim 3, it is characterized in that: the reaction pH in described step 5) is 3-4, the concentration of hydrogen peroxide is 30%, and dosage is 50ml/L, and ferrous sulfate dosage is 8g/L.
7. the treatment facility of chemical industry mother liquor waste water as claimed in claim 3, is characterized in that: to react pH in described step 6) after feeding lime be 7-8, PAM concentration be 0.5 ‰, PAM dosage is 2ppm.
8. the treatment facility of chemical industry mother liquor waste water as claimed in claim 3, it is characterized in that: in the chlorine bleach liquor that described step 7) adds, the mass percentage of chlorine is 12%, and dosage is 1 ‰.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150807.8A CN104724858A (en) | 2015-04-01 | 2015-04-01 | Chemical mother solution wastewater treatment facility and treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510150807.8A CN104724858A (en) | 2015-04-01 | 2015-04-01 | Chemical mother solution wastewater treatment facility and treatment method |
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ID=53449359
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001005717A1 (en) * | 1999-07-15 | 2001-01-25 | Solmetex, Inc. | Combined oxidation and chelating adsorption system for removal of mercury from water |
| CN102863069A (en) * | 2012-10-12 | 2013-01-09 | 中国地质大学（北京） | Composite Fenton treatment method for herbicide pesticide wastewater |
| CN203715447U (en) * | 2013-12-17 | 2014-07-16 | 上海轻工业研究所有限公司 | Electroplating comprehensive waste water treatment system |
| CN204588881U (en) * | 2015-04-01 | 2015-08-26 | 绍兴柯桥江滨水处理有限公司 | A kind for the treatment of facility of chemical industry mother liquor waste water |
-
2015
- 2015-04-01 CN CN201510150807.8A patent/CN104724858A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001005717A1 (en) * | 1999-07-15 | 2001-01-25 | Solmetex, Inc. | Combined oxidation and chelating adsorption system for removal of mercury from water |
| CN102863069A (en) * | 2012-10-12 | 2013-01-09 | 中国地质大学（北京） | Composite Fenton treatment method for herbicide pesticide wastewater |
| CN203715447U (en) * | 2013-12-17 | 2014-07-16 | 上海轻工业研究所有限公司 | Electroplating comprehensive waste water treatment system |
| CN204588881U (en) * | 2015-04-01 | 2015-08-26 | 绍兴柯桥江滨水处理有限公司 | A kind for the treatment of facility of chemical industry mother liquor waste water |
Non-Patent Citations (1)
| Title |
|---|
| 赖波等: "化学氧化法预处理ABS树脂生产废水", 《北京工业大学学报》 * |
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Application publication date: 20150624 |