CN106629878A - High-cyanide-content wastewater treatment system and treatment method - Google Patents
High-cyanide-content wastewater treatment system and treatment method Download PDFInfo
- Publication number
- CN106629878A CN106629878A CN201610912969.5A CN201610912969A CN106629878A CN 106629878 A CN106629878 A CN 106629878A CN 201610912969 A CN201610912969 A CN 201610912969A CN 106629878 A CN106629878 A CN 106629878A
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- China
- Prior art keywords
- reactor
- deammoniation tower
- cyanide
- outlet
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C02F1/00—Treatment of water, waste water, or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1418—Recovery of products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/04—Pressure vessels, e.g. autoclaves
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Removal Of Specific Substances (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a high-cyanide-content wastewater treatment system and a treatment method. The high-cyanide-content wastewater treatment system comprises a reaction kettle, a deamination tower, an absorption apparatus and a water storage tank. The high-cyanide-content wastewater treatment method comprises the steps that firstly, sodium cyanide containing wastewater is collected to the reaction kettle, the temperature in the reaction kettle is kept to 155-160 DEG C, and the pressure is kept 0.5-0.6 Mpa, so that sodium cyanide is hydrolyzed into ammonia gas and sodium formate; then, the pressure in the reaction kettle is relieved to normal pressure, a hydrolysate is led to the deamination tower, a fan of the deamination tower is started to blow ammonia gas; the removed ammonia gas is led to a dilute sulphuric acid containing absorption apparatus from a gas outlet of the deamination tower, and the ammonia gas reacts with dilute sulphuric acid to generate ammonium sulfate; the liquid subjected to deamination is led to the water storage tank from a liquid outlet of the deamination tower and finally is discharged into a sewage treatment process from the water storage tank. The high-cyanide-content wastewater treatment system has the advantages that the raw material inputting amount is small, the cost is low, the operation is simple, and a treatment effect is good; the generated ammonium sulfate can serves as a chemical fertilizer, and the system is environmentally friendly and saves resources.
Description
Technical field
The present invention relates to a kind of sewage disposal system and processing method, more particularly to a kind of high-cyanogen waste water processing system and place
Reason method.
Background technology
The sodium cyanide-containing waste water of high concentration, carries out complex process during environmental protection treatment, and used device is more, and processing cost is high.Often
In processing method, using ferrous sulfate broken cyanide a large amount of solid waste containing cyanogen can be produced；Using alkaline chlorination process broken cyanide
Chlorion in water outlet can be caused exceeded, to the biochemical treatment of next step difficulty is brought；Then put into into using hydrogen peroxide oxidation broken cyanide
This is higher.
The content of the invention
The technical problem to be solved is to provide a kind of high-cyanogen waste water processing system of environmental protection and saving and process side
Method.
The present invention is solution above-mentioned technical problem, high-cyanogen waste water processing system, including reaction by the following technical programs
Kettle, deammoniation tower, absorption plant and aqua storage tank；The outlet of the reactor connects the deammoniation tower；The deammoniation tower is provided with company
The air inlet of extraneous air is connect, blower fan is internally provided with；The gas outlet of the deammoniation tower connects the absorption plant, the deamination
The liquid outlet of tower connects the aqua storage tank；The absorption plant is built with dilute sulfuric acid.
Used as the technical scheme of optimization, the outlet of the reactor is divided into gas outlet and liquid outlet, the gas outlet at the top of it
Connect the deammoniation tower respectively with the liquid outlet of bottom.
Used as the technical scheme of optimization, the liquid outlet of the reactor connects deammoniation tower by bottom pump.
High-cyanogen waste water processing method, it is characterised in that comprise the steps：First by the wastewater collection of sodium cyanide-containing to instead
In answering kettle, the temperature in reactor is maintained at into 155-160 DEG C, pressure is maintained at 0.5-0.6Mpa, makes Cymag hydrolyze ammonification
Gas and sodium formate；Then the pressure in reactor is let out to normal pressure, hydrolysate is passed through in deammoniation tower, open the wind of deammoniation tower
Machine stripping ammonia；The ammonia of removing is passed through in the absorption plant equipped with dilute sulfuric acid from the gas outlet of deammoniation tower, ammonia and dilute sulphur
Acid reaction generates ammonium sulfate；To be passed through in aqua storage tank from the liquid outlet of deammoniation tower through the liquid of deamination, finally arranged by aqua storage tank
Enter sewage disposal operation.
As the technical scheme of optimization, comprise the steps：After the waste water of sodium cyanide-containing is entered in reactor, in reactor
155-160 DEG C of temperature and the pressure of 0.5-0.6Mpa are kept for 10 hours.
As the technical scheme of optimization, comprise the steps：Pressure in reactor is let out to normal pressure, by gas from reaction
Gas outlet at the top of kettle is passed through in deammoniation tower, and liquid is pumped in deammoniation tower from the liquid outlet of reactor bottom by bottom pump.
It is an advantage of the current invention that：Input raw material is few, and low cost is simple to operate, high treating effect；The ammonium sulfate of generation can
As chemical fertilizer, environmental protection and economize on resources.
Description of the drawings
Fig. 1 is the schematic diagram of high-cyanogen waste water processing system of the present invention.
Specific embodiment
As shown in figure 1, high-cyanogen waste water processing system, including reactor 1, deammoniation tower 2, absorption plant 3 and aqua storage tank 4；Instead
The outlet for answering kettle 1 is divided into gas outlet and liquid outlet, and the gas outlet connection deammoniation tower 2 at the top of it, the liquid outlet of bottom passes through bottom
Pump 5 connects deammoniation tower 2；Deammoniation tower 2 is provided with the air inlet of connection extraneous air, is internally provided with blower fan；The outlet of deammoniation tower 2
Mouth connection absorption plant 3, the liquid outlet connection aqua storage tank 4 of deammoniation tower 2, absorption plant 3 is built with dilute sulfuric acid.
High-cyanogen waste water processing method, comprises the steps：First by the wastewater collection of sodium cyanide-containing to reactor 1, incite somebody to action
Temperature in reactor 1 is maintained at 155-160 DEG C, and pressure is maintained at 0.5-0.6Mpa, and at this temperature and pressure reaction 10 is little
When, make Cymag be hydrolyzed into ammonia and sodium formate, solution PH is 12 or so after hydrolysis；Then by the pressure in reactor 1
Let out to normal pressure, gas is passed through in deammoniation tower 2 from the gas outlet at the top of reactor 1, by liquid from the liquid outlet of the bottom of reactor 1
Pumped in deammoniation tower 2 by bottom pump 5, open the blower fan stripping ammonia of deammoniation tower 2；By the ammonia of removing from the outlet of deammoniation tower 2
Mouth is passed through in the absorption plant 3 equipped with dilute sulfuric acid, and ammonia generates ammonium sulfate with dilute sulfuric acid reaction；By through the liquid of deamination from de-
The liquid outlet of ammonia tower 2 is passed through in aqua storage tank 4, and now the liquid cyanogen root in aqua storage tank 4 is less than 80mg/L, and ammonia nitrogen is less than 150mg/L,
Finally sewage disposal operation is entered by aqua storage tank 4.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Any modification, equivalent and improvement for being made within principle etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of high-cyanogen waste water processing system, it is characterised in that：Including reactor (1), deammoniation tower (2), absorption plant (3) and storage
Tank (4)；The outlet of the reactor (1) connects the deammoniation tower (2)；The deammoniation tower (2) is provided with connection extraneous air
Air inlet, be internally provided with blower fan；The gas outlet of the deammoniation tower (2) connects the absorption plant (3), the deammoniation tower
(2) liquid outlet connects the aqua storage tank (4)；The absorption plant (3) is built with dilute sulfuric acid.
2. high-cyanogen waste water processing system as claimed in claim 1, it is characterised in that：The outlet of the reactor (1) is divided into
Gas port and liquid outlet, the liquid outlet of gas outlet and bottom at the top of it connects respectively the deammoniation tower (2).
3. high-cyanogen waste water processing system as claimed in claim 1, it is characterised in that：The liquid outlet of the reactor (1) passes through
Bottom pump (5) connects deammoniation tower.
4. a kind of high-cyanogen waste water processing method, it is characterised in that comprise the steps：The wastewater collection of sodium cyanide-containing is arrived first
In reactor (1), the temperature in reactor (1) is maintained at into 155-160 DEG C, pressure is maintained at 0.5-0.6Mpa, makes Cymag
It is hydrolyzed into ammonia and sodium formate；Then the pressure in reactor (1) is let out to normal pressure, hydrolysate is passed through in deammoniation tower (2),
Open the blower fan stripping ammonia of deammoniation tower (2)；The ammonia of removing is passed through into the suction equipped with dilute sulfuric acid from the gas outlet of deammoniation tower (2)
In receiving apparatus (3), ammonia generates ammonium sulfate with dilute sulfuric acid reaction；To lead to from the liquid outlet of deammoniation tower (2) through the liquid of deamination
Enter in aqua storage tank (4), finally sewage disposal operation is entered by aqua storage tank (4).
5. high-cyanogen waste water processing method as claimed in claim 4, it is characterised in that：The waste water of sodium cyanide-containing enters reactor
(1) after in, the pressure of 155-160 DEG C of temperature and 0.5-0.6Mpa is kept for 10 hours in reactor (1).
6. high-cyanogen waste water processing method as claimed in claim 4, it is characterised in that：Pressure in reactor (1) is let out to normal pressure
Afterwards, the gas outlet by gas from the top of reactor (1) is passed through in deammoniation tower (2), by liquid from the liquid outlet of reactor (1) bottom
Pumped in deammoniation tower (2) by bottom pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610912969.5A CN106629878A (en) | 2016-10-20 | 2016-10-20 | High-cyanide-content wastewater treatment system and treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610912969.5A CN106629878A (en) | 2016-10-20 | 2016-10-20 | High-cyanide-content wastewater treatment system and treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106629878A true CN106629878A (en) | 2017-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610912969.5A Pending CN106629878A (en) | 2016-10-20 | 2016-10-20 | High-cyanide-content wastewater treatment system and treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521805A (en) * | 2021-08-26 | 2021-10-22 | 营口德瑞化工有限公司 | A clarification plant for ammonia in liquid sodium cyanide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057819A (en) * | 1990-07-06 | 1992-01-15 | 天津市华北氧气厂 | Production process for solid sodium cyanide |
| 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- |
| CN101664627A (en) * | 2009-09-23 | 2010-03-10 | 赢创三征（营口）精细化工有限公司 | Method and equipment for purifying tail gas generated in producing sodium cyanide by cracking light oil |
-
2016
- 2016-10-20 CN CN201610912969.5A patent/CN106629878A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057819A (en) * | 1990-07-06 | 1992-01-15 | 天津市华北氧气厂 | Production process for solid sodium cyanide |
| 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- |
| CN101664627A (en) * | 2009-09-23 | 2010-03-10 | 赢创三征（营口）精细化工有限公司 | Method and equipment for purifying tail gas generated in producing sodium cyanide by cracking light oil |
Non-Patent Citations (1)
| Title |
|---|
| 张铃等: "含氨污水治理", 《石油化工环境保护》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521805A (en) * | 2021-08-26 | 2021-10-22 | 营口德瑞化工有限公司 | A clarification plant for ammonia in liquid sodium cyanide |
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Application publication date: 20170510 |