CN105502552A - Treatment method for cyclohexanone device waste water - Google Patents
Treatment method for cyclohexanone device waste water Download PDFInfo
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- CN105502552A CN105502552A CN201410496472.0A CN201410496472A CN105502552A CN 105502552 A CN105502552 A CN 105502552A CN 201410496472 A CN201410496472 A CN 201410496472A CN 105502552 A CN105502552 A CN 105502552A
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Abstract
The invention provides a treatment method for cyclohexanone device waste water through adsorption by means of activated carbon supporting metal. In the method, an activated carbon adsorbent supporting 1-5% by mass of the metal is employed. The treatment method particularly includes the steps of: after the activated carbon adsorbent is prepared, the cyclohexanone device waste water is subjected to adsorption treatment at a low temperature and then is subjected to desorption through a cyclohexane washing adsorbent at a high temperature, wherein the adsorbent after the desorption can be recycled. The treated cyclohexanone device waste water is 80-90% in COD removal ratio after the adsorption treatment, is clear in water quality and is free of obvious odor. The method reduces energy consumption of treating the cyclohexanone device waste water and saves treatment cost.
Description
Technical field
The present invention is a kind of novel process for the treatment of pimelinketone device waste water.
Background technology
Air oxidation of cyclohexane legal system is the domestic technique generally adopted at present for pimelinketone technique, with benzene, hydrogen for main raw material, obtains product pimelinketone through benzene hydrogenation, cyclohexane oxidation, peroxide breakdown, cyclohexanol dehydrogenation, rectifying.Wherein all waste water can be produced in oxidizing reaction, decomposition reaction and rectification under vacuum process, its COD value 5000-20000mg/L, if this type of waste water directly discharges without process, then the material such as pimelinketone, hexalin wherein accumulates very easily in the environment, they are difficult to Natural Degradation, and can along with food chain enrichment thus to the serious harm of human health formation.Therefore the effective treating method finding a Cyclohexanone Waste Water is very important.Current most domestic pimelinketone enterprise adopts vaporizing extract process and light electrolysis system method for pretreating process waste water.
Ju Hua group Acrylic Fibers Plant adopts the waste water produced in vaporizing extract process Treatment of Cyclohexanone production process, waste water goes on stripping tower after delivering to heat exchanger and stripping tower bottom low concentration wastewater heat exchange out by water pump, steam enters stripping tower bottom, and the waste water sprayed by tower top carries out stripping process.The high-concentration waste water that tower top steams returns saponification system after going stripping condenser intermediate water to cool.Low concentration wastewater bottom stripping tower send Sewage Plant process after heat exchanger heat exchange cooling, and COD decreasing ratio reaches 80%.
Tan Qinwen etc. develop microelectrolysis processing cyclohexanone industrial wastewater technique, by industry flocculation-iron-carbon micro-electrolysis-pH regulator, the treatment effect of cyclohexanone industrial wastewater is improved, wherein the hydrocarbon six-ring of hexanaphthene, benzo pollutants is opened by Fe-C Micro Electrolysis Method, reduce the load of subsequent processing units, continue to reduce its pollution load by pre-treatment oxidation-anaerobic biological treatment-Aerobic biological process again, make final outflow water water quality reach discharging standards.This Sewage treatment systems actual electricity consumption every day is 156kwh/d, and water outlet COD value is lower than 400mg/L.
In above technological method, there are some more serious technical problem or defects, such as operate loaded down with trivial details, processing cost is high, especially all there is the high shortcoming of energy consumption in vaporizing extract process and micro-electrolysis method two kinds of methods.To water conservation environment, exploitation high efficiency, low cost Treatment of Cyclohexanone Waste Water technique, promotes that pimelinketone industry benign development has strategic importance.
Summary of the invention
For China's current pimelinketone device wastewater treatment Problems existing, the invention provides a kind for the treatment of process of Cyclohexanone Waste Water, processed waste water COD value obviously reduces, and compare with existing treatment process, processing cost is lower, and operation is simpler.
Concrete treatment process key of the present invention is to use modified activated carbon absorbent adsorption treatment Cyclohexanone Waste Water, processed waste water COD decreasing ratio 80%-90%, treating processes is simple, the organism such as recoverable wastewater cyclohexanone and hexalin, without a large amount of energy consumption in treating processes, do not produce new pollution.
Main technical schemes of the present invention:
For China's current pimelinketone device waste water treatment process Problems existing, the invention provides a kind for the treatment of process of pimelinketone device waste water, concrete treatment process key of the present invention is to have prepared high absorption property modified activated carbon absorbent, pimelinketone and hexanaphthene is reclaimed by pimelinketone device intermediates hexanaphthene washing desorption, reduce wastewater treatment energy consumption, reach the requirement reducing COD value of waste water.
It is characterized in that the modified activated carbon absorbent adsorption treatment pimelinketone device waste water by metal load, by hexanaphthene washing sorbent material desorption after adsorbent is saturated, reclaim organism.Processed waste water cyclohexanone and hexalin content are respectively lower than 100ppm, and COD value decreasing ratio 80%-90%, water quality is limpid, recovery after sorbent material desorption.
The sorbent material adopted is metal load gac, and load has metal content on the granulated active carbon of copper or nickel to be the 1%-5% of total mass, and activated carbon granule size is 20-40 order.
The preparation method of described absorption modified activated carbon is: granulated active carbon is placed in 0.05-0.25mol/L cupric ion or nickel ion solution; in 40-60 DEG C of dipping 2-4h; after filtering drying, in 300-400 DEG C of roasting temperature 2-3h, obtained absorption gac.
The adsorption treatment waster water process activated carbon of sorbent adopted and process wastewater quality are than being 1:20-1:40.
The adsorption treatment waster water process adsorbent hydroxyl aluminum adopted is 2-4h, adsorption temp 20-40 DEG C.
During the sorbent treatment waster water process desorption adopted, sorbent material and solvent quality are than being 1:40-1:80.
The adsorption treatment waster water process desorption residence time adopted is 4-6h, desorption temperature 60-100 DEG C.
2000-8000ppm pimelinketone is contained in Cyclohexanone Waste Water, 1000-4000ppm hexalin before process of the present invention; Before process, Cyclohexanone Waste Water COD value is 5000-20000mg/L.
Pimelinketone device waste water COD decreasing ratio 80%-90% after the inventive method process, water quality is clarified, and without obvious peculiar smell, reduces the energy consumption of Treatment of Cyclohexanone device waste water, has saved processing cost.
Embodiment
Below in conjunction with embodiment, the inventive method is described in detail.
Embodiment 1
10g20 order size particles gac is placed in 800mL0.05mol/L copper nitrate solution, dip loading 2h under 40 DEG C of water bath condition, after filtering drying, in 300 DEG C of roasting 2h in vacuum drying oven, obtained supported copper ionic activity charcoal.In miniature filler in packed column layer, put into 10g sorbent material, under 20 DEG C of conditions by the pimelinketone device waste water of 200gCOD value 20000mg/L with 2ml/min flow velocity by packing layer, processed waste water COD value 2000mg/L, COD decreasing ratio 90%.Under 60 DEG C of conditions, 800g hexanaphthene is passed through packing layer with 4ml/min flow velocity, after washing, sorbent material is capable of circulation applies mechanically.
Embodiment 2
20g40 order size particles gac is placed in 500mL0.25mol/L nickel nitrate solution, dip loading 2h under 50 DEG C of water bath condition, after filtering drying, in 300 DEG C of roasting 2h in vacuum drying oven, obtained nickel-loaded ionic activity charcoal.In miniature filler in packed column layer, put into 20g sorbent material, under 40 DEG C of conditions by the pimelinketone device waste water of 800gCOD value 5000mg/L with 4ml/min flow velocity by packing layer, processed waste water COD value 2000mg/L, COD decreasing ratio 80%.Under 60 DEG C of conditions, 1100g hexanaphthene is passed through packing layer with 4ml/min flow velocity, after washing, sorbent material is capable of circulation applies mechanically.
Embodiment 3
10g20 order size particles gac is placed in 500mL0.2mol/L copper nitrate solution, dip loading 2h under 60 DEG C of water bath condition, filtering drying after finishing, in 300 DEG C of roasting 2h in vacuum drying oven, obtained supported copper ionic activity charcoal.In miniature filler in packed column layer, put into 10g sorbent material, under 40 DEG C of conditions by the pimelinketone device waste water of 300gCOD value 10000mg/L with 1.5ml/min flow velocity by packing layer, processed waste water COD value 1400mg/L, COD decreasing ratio 86%.Under 100 DEG C of conditions, 400g hexanaphthene is passed through packing layer with 2ml/min flow velocity, after washing, sorbent material is capable of circulation applies mechanically.
Claims (9)
1. a treatment process for pimelinketone device waste water, is characterized in that using metal load modified activated carbon to be adsorbent process waste water; Use pimelinketone device intermediate product hexanaphthene washing desorption, reclaim pimelinketone and hexalin.
2. the treatment process of pimelinketone device waste water according to claim 1, is characterized in that processed waste water cyclohexanone and hexalin content are respectively lower than 100ppm, processed waste water COD decreasing ratio 80%-90%.
3. the treatment process of pimelinketone device waste water according to claim 1; it is characterized in that adopted sorbent material is modified activated carbon; modified activated carbon is the granulated active carbon of supported copper or nickel, and loaded metal content is the 1%-5% of total mass, and granular size is 20-40 order.
4. the treatment process of pimelinketone device waste water according to claim 1 or 3, is characterized in that activated carbon of sorbent and process wastewater quality are than being 1:20-1:40.
5. the treatment process of pimelinketone device waste water according to claim 1 or 3; it is characterized in that the preparation method of absorption modified activated carbon is: granulated active carbon is placed in 0.05-0.25mol/L cupric ion or nickel ion solution; in 40-60 DEG C of dipping 2-4h; after filtering drying; in 300-400 DEG C of roasting temperature 2-3h, obtained absorption gac.
6. the treatment process of pimelinketone device waste water according to claim 1, is characterized in that processing containing 2000-8000ppm pimelinketone in front Cyclohexanone Waste Water, 1000-4000ppm hexalin; Before process, Cyclohexanone Waste Water COD value is 5000-20000mg/L.
7. the treatment process of pimelinketone device waste water according to claim 1, it is characterized in that adsorbent hydroxyl aluminum is 2-4h, adsorption temp is 20-40 DEG C.
8. the treatment process of pimelinketone device waste water according to claim 1, when it is characterized in that absorption, sorbent material and solvent quality are than being 1:40-1:80.
9. the treatment process of pimelinketone device waste water according to claim 1, it is characterized in that the desorption residence time is 4-6h, desorption temperature is 60-100 DEG C.
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| CN201410496472.0A CN105502552B (en) | 2014-09-25 | 2014-09-25 | A kind of processing method of pimelinketone device waste water |
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| CN201410496472.0A CN105502552B (en) | 2014-09-25 | 2014-09-25 | A kind of processing method of pimelinketone device waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548770A (en) * | 2021-07-14 | 2021-10-26 | 刘炳鑫 | Cyclohexanone-containing sewage treatment process and device |
Citations (2)
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|---|---|---|---|---|
| JP2000210663A (en) * | 1999-01-26 | 2000-08-02 | Hitachi Zosen Corp | Method of removing dioxins in waste water |
| CN102992506A (en) * | 2011-09-14 | 2013-03-27 | 中国石油化工股份有限公司 | Cyclohexanone ammoximation biochemical wastewater decoloring and processing method |
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2014
- 2014-09-25 CN CN201410496472.0A patent/CN105502552B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000210663A (en) * | 1999-01-26 | 2000-08-02 | Hitachi Zosen Corp | Method of removing dioxins in waste water |
| CN102992506A (en) * | 2011-09-14 | 2013-03-27 | 中国石油化工股份有限公司 | Cyclohexanone ammoximation biochemical wastewater decoloring and processing method |
Non-Patent Citations (1)
| Title |
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| 王永义等: ""活性炭处理环己酮废水研究"", 《绿色科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548770A (en) * | 2021-07-14 | 2021-10-26 | 刘炳鑫 | Cyclohexanone-containing sewage treatment process and device |
| CN113548770B (en) * | 2021-07-14 | 2023-11-21 | 刘炳鑫 | Process and device for treating sewage containing cyclohexanone |
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| CN105502552B (en) | 2018-06-12 |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |