CN106219853A - The continuous treatment process of cyanide wastewater - Google Patents
The continuous treatment process of cyanide wastewater Download PDFInfo
- Publication number
- CN106219853A CN106219853A CN201610774773.4A CN201610774773A CN106219853A CN 106219853 A CN106219853 A CN 106219853A CN 201610774773 A CN201610774773 A CN 201610774773A CN 106219853 A CN106219853 A CN 106219853A
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- Prior art keywords
- cyanide wastewater
- tower
- treatment process
- continuous treatment
- wastewater
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/026—Preparation of ammonia from inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to the processing technology field of wastewater from chemical industry, especially relate to the process of cyanide wastewater, specifically disclose the continuous treatment process of cyanide wastewater, comprise the following steps: mix in cyanide wastewater and oxidant are passed through the most continuously waste-water treatment tower, and utilize tower reactor to heat, make mixed liquor heat up, cyanogen root oxidation Decomposition is generated ammonia, overhead extraction ammonia acid solution absorption section of going forward side by side absorbs, and tower reactor extraction carries out concentrating desalination without the waste water of cyanogen root concentration section of going forward side by side；Described oxidant is hydrogen peroxide.The inventive method has treatment effeciency height, the simple advantage of processing procedure, it is capable of the automatization's continuous processing to cyanide wastewater, the production equipment, the facility that are used are few, floor space is little, invest little, labor strength can be reduced, improve working environment, there is economic and social benefit significantly.
Description
Technical field
The present invention relates to the processing technology field of wastewater from chemical industry, especially relate to the process of cyanide wastewater.
Background technology
The waste water that cyanide wastewater produces when being by cyanide synthesis downstream product.The autoclave of interval processes method for waste water not only
Treatment effeciency is low, but also has existence and process not thorough, needs the probability of further advanced treating；Moreover from data
Analyzing, the process still of 6300L processes a collection of 6h that needs, and treating capacity hourly is close to 1 ton hour.If so calculating every
It waste water processing 300 tons needs the equipment of 13 set 6300L, adds affiliated facility, and occupation area of equipment is big, and investment is big, and
The work of workman is powerful.
Summary of the invention
The technical problem to be solved in the present invention is to provide the continuous treatment process of cyanide wastewater, has treatment effeciency height, place
The simple advantage of reason process, the production equipment, the facility that are used are few, and floor space is little, invests little, it is possible to reduce workman and work by force
Degree, reduces the processing cost of cyanide wastewater.
For solving above-mentioned technical problem, the technical solution used in the present invention is: the continuous treatment process of cyanide wastewater, bag
Include following steps: mix in cyanide wastewater and oxidant are passed through the most continuously waste-water treatment tower, and utilize tower reactor to heat, make
Mixed liquor heat up, by cyanogen root oxidation Decomposition generate ammonia, overhead extraction ammonia go forward side by side acid solution absorption section absorb, tower reactor extraction
Waste water without cyanogen root go forward side by side concentration section carry out concentrate desalination；Described oxidant is hydrogen peroxide or hypochlorite solutions.
In order to ensure that cyanogen root processes completely, those skilled in the art will know that, oxidant should excess add.As preferably,
The mol ratio of hydrogen peroxide and cyanogen root is 1.1～1.5:1.
In order to ensure the safety in cyanogen root processing procedure, the cyanide wastewater that Chemical Manufacture is discharged is generally alkaline waste water.Make
For preferably, cyanide wastewater regulates pH to 6-12 before being passed through waste-water treatment tower.
Using the present invention program Treatment of Cyanide-containing Wastewater, the waste water of tower reactor extraction does not contains cyanogen root, and the COD of waste water drops significantly
Low.
Further, described waste-water treatment tower is packed tower, and filler used is ceramic filler, and described packed tower exists
It is provided with mixed distribution device at charging, for cyanide wastewater and the mixing of oxidant, and mixed feed liquid is distributed on filler.
Described packed tower height is 10-40 rice, and the tower reactor of described packed tower is provided with reboiler.
The mixing temperature of described cyanide wastewater and oxidant controls at 50-80 DEG C.
Bottom temperature controls at 90-110 DEG C.
Further, described acid solution absorption section uses the ammonia that hydrochloric acid or sulfuric acid absorption generate, described hydrochloric acid or sulphuric acid
Mass concentration be 20-30%；Described acid solution absorption section continuous extraction ammonium salt solution adds acid solution simultaneously.
Use and have the beneficial effects that produced by technique scheme:
The inventive method has treatment effeciency height, the simple advantage of processing procedure, and the production equipment, the facility that are used are few, takes up an area
Area is little, invests little, and in unit interval, unit are, disposal ability is big, it is possible to realize automation process, reduces workman's labor
Fatigue resistance, reduces the processing cost of cyanide wastewater.
The equipment of application the inventive method continuous treatment, its production efficiency can rise to 13 tons of waste water per hour, be
Originally 13 times of still reaction；The construction area used is narrowed down to 100 by original 800, has saved artificial, equipment, energy
The costs such as source, improve working environment, and the safety of technique and the seriality of process, stability access guarantee, economic effect
Benefit and social benefit are notable.
Accompanying drawing explanation
Fig. 1 is the process chart using embodiment of the present invention method continuous processing cyanide wastewater.
Wherein, 1, oxidant storage tank；2, cyanide wastewater storage tank；3, waste-water treatment tower；4, reboiler；5, acid absorption kettle.Oxygen
Agent storage tank is connected with waste-water treatment tower charging aperture by conveyance conduit respectively with cyanide wastewater storage tank, and feeding in tower, tower
Still or reboiler extracted waste water enter to concentrate desalination workshop section, and overhead extraction ammonia is passed through the sour absorption kettle of acid solution absorption section.
Detailed description of the invention
Embodiment 1
See Fig. 1 technological process, the waste water containing 0.5% cyanogen root is adjusted pH to 6-8, and 30% hydrogen peroxide is according to the mol ratio of 1:1.2
Feeding in waste-water treatment tower, charging aperture is located at the middle part of tower, and inlet temperature is 50 DEG C simultaneously.Control the charging of cyanide wastewater
Amount is 13 ton hour, and the inlet amount of the hydrogen peroxide of 30% is 2.6 ton hour.The height of the treating column used is 35m, control tower
Still temperature is 90 DEG C, the most outwards extracted waste water, and the cyanogen radical content in sampling detection extracted waste water does not detects, and is led to by extracted waste water
Enter to concentrate desalination workshop section.The ammonia generated in tower top processing procedure out enters into the sulfuric acid absorption still of 30%, per hour to acid
Absorption kettle is added the sulphuric acid 820kg of 30%, and the most outwards extraction ammonium sulfate is 870kg, the process of whole absorption ammonia
Realize serialization, the operation that whole process technique can be continual and steady.
Embodiment 2
See Fig. 1 technological process, by containing 0.5% cyanogen root waste water adjust pH to 8-10, and 30% hydrogen peroxide according to 1:1.5 mole
Than feeding in tower simultaneously, inlet temperature is 70 DEG C.The inlet amount controlling waste water is 13 ton hour, entering of the hydrogen peroxide of 30%
Doses is 6.5 ton hour.The height of the treating column used is 40m, and controlling bottom temperature is 105 DEG C, and the most outwards extraction is given up
Water, the cyanogen radical content that sampling is surveyed in extracted waste water does not detects, and enters to concentrate desalination workshop section by extracted waste water.Tower top process out
The ammonia generated in journey continuously enters the hydrochloric acid of 20% and inhales still, adds the hydrochloric acid 460kg of 20% per hour, continuously in acid absorption kettle
Outwards extraction ammonium chloride solution 500kg.The technique of whole Treatment of Cyanide-containing Wastewater can be continual and steady operation.
Above the present invention is described in detail, the present invention applies specific case embodiments of the present invention are carried out
Illustrating, the explanation of above example is only intended to help and understands the present invention, it is noted that for the technology people of the art
For Yuan, under the premise without departing from the principles of the invention, also the present invention can be carried out some improvement, these improvement also fall into this
In bright scope of the claims.
Claims (7)
1. the continuous treatment process of cyanide wastewater, it is characterised in that: comprise the following steps: by cyanide wastewater and oxidant in proportion
It is passed through mixing in waste-water treatment tower continuously, and utilizes tower reactor to heat, make mixed liquor heat up, cyanogen root oxidation Decomposition is generated ammonia
Gas, overhead extraction ammonia acid solution absorption section of going forward side by side absorbs, and tower reactor extraction carries out dense without the waste water of cyanogen root concentration section of going forward side by side
Contracting desalination；Described oxidant is hydrogen peroxide.
The continuous treatment process of cyanide wastewater the most according to claim 1, it is characterised in that described waste-water treatment tower is for filling out
Material tower, filler used is ceramic filler, and described packed tower is provided with mixed distribution device at charging, for cyanide wastewater and
The mixing of oxidant, and mixed feed liquid is distributed on filler.
The continuous treatment process of cyanide wastewater the most according to claim 2, it is characterised in that described packed tower height is 10-
40 meters, the tower reactor of described packed tower is provided with reboiler.
The continuous treatment process of cyanide wastewater the most according to claim 1, it is characterised in that described cyanide wastewater and oxidation
The mixing temperature of agent controls at 50-80 DEG C.
The continuous treatment process of cyanide wastewater the most according to claim 1, it is characterised in that bottom temperature controls at 90-
110℃。
The continuous treatment process of cyanide wastewater the most according to claim 1, it is characterised in that described acid solution absorption section is adopted
The ammonia generated by hydrochloric acid or sulfuric acid absorption, the mass concentration of described hydrochloric acid or sulphuric acid is 20-30%；Described acid solution absorption section
Extraction ammonium salt solution adds acid solution simultaneously continuously.
The continuous treatment process of cyanide wastewater the most according to claim 1, it is characterised in that by cyanide wastewater and oxidant
Mix in being passed through waste-water treatment tower continuously in following ratio: the mol ratio of hydrogen peroxide and cyanogen root is 1.1～1.5:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774773.4A CN106219853A (en) | 2016-08-31 | 2016-08-31 | The continuous treatment process of cyanide wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774773.4A CN106219853A (en) | 2016-08-31 | 2016-08-31 | The continuous treatment process of cyanide wastewater |
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| CN106219853A true CN106219853A (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610774773.4A Pending CN106219853A (en) | 2016-08-31 | 2016-08-31 | The continuous treatment process of cyanide wastewater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107434253A (en) * | 2017-08-06 | 2017-12-05 | 河北诚信有限责任公司 | A kind of continuous production technology and its production system of high-quality cyanide solution |
| CN110844920A (en) * | 2019-12-23 | 2020-02-28 | 山东益丰生化环保股份有限公司 | Method for improving quality of cyanamide product |
| CN112062328A (en) * | 2020-08-25 | 2020-12-11 | 天津正达科技有限责任公司 | Method for rapidly treating cyanide-containing wastewater in blast furnace cooling |
| CN113860566A (en) * | 2021-10-29 | 2021-12-31 | 京博农化科技有限公司 | Recycling method of cyanogen-containing waste liquid in production of rice blast amide |
Citations (6)
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|---|---|---|---|---|
| US5476596A (en) * | 1994-06-17 | 1995-12-19 | Uop | Oxidation and hydrolysis of cyanides using metal chelates on supports of metal oxide solid solutions |
| CN101274806A (en) * | 2007-03-30 | 2008-10-01 | 北京清华紫光英力化工技术有限责任公司 | Novel process for reclaiming waste water containing CN- and NH3 or NH4- |
| CN101875517A (en) * | 2009-04-28 | 2010-11-03 | 苏州佳辉化工有限公司 | Method for treating cyanogen-containing wastewater |
| CN102642986A (en) * | 2012-04-20 | 2012-08-22 | 上海化学工业区中法水务发展有限公司 | Method and device for treating organic cyanide wastewater |
| CN102921285A (en) * | 2012-11-08 | 2013-02-13 | 南京大学 | Method for processing waste gases containing hydrogen cyanide |
| CN204752302U (en) * | 2015-06-05 | 2015-11-11 | 长春黄金研究院 | Waste liquid catalytic oxidation reactor |
-
2016
- 2016-08-31 CN CN201610774773.4A patent/CN106219853A/en active Pending
Patent Citations (6)
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| US5476596A (en) * | 1994-06-17 | 1995-12-19 | Uop | Oxidation and hydrolysis of cyanides using metal chelates on supports of metal oxide solid solutions |
| CN101274806A (en) * | 2007-03-30 | 2008-10-01 | 北京清华紫光英力化工技术有限责任公司 | Novel process for reclaiming waste water containing CN- and NH3 or NH4- |
| CN101875517A (en) * | 2009-04-28 | 2010-11-03 | 苏州佳辉化工有限公司 | Method for treating cyanogen-containing wastewater |
| CN102642986A (en) * | 2012-04-20 | 2012-08-22 | 上海化学工业区中法水务发展有限公司 | Method and device for treating organic cyanide wastewater |
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| CN204752302U (en) * | 2015-06-05 | 2015-11-11 | 长春黄金研究院 | Waste liquid catalytic oxidation reactor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107434253A (en) * | 2017-08-06 | 2017-12-05 | 河北诚信有限责任公司 | A kind of continuous production technology and its production system of high-quality cyanide solution |
| CN110844920A (en) * | 2019-12-23 | 2020-02-28 | 山东益丰生化环保股份有限公司 | Method for improving quality of cyanamide product |
| CN112062328A (en) * | 2020-08-25 | 2020-12-11 | 天津正达科技有限责任公司 | Method for rapidly treating cyanide-containing wastewater in blast furnace cooling |
| CN113860566A (en) * | 2021-10-29 | 2021-12-31 | 京博农化科技有限公司 | Recycling method of cyanogen-containing waste liquid in production of rice blast amide |
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