CN102718338A - Cyanogen-containing waste water treatment system and cyanogen-containing waste water treatment method - Google Patents
Cyanogen-containing waste water treatment system and cyanogen-containing waste water treatment method Download PDFInfo
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- CN102718338A CN102718338A CN2012101603878A CN201210160387A CN102718338A CN 102718338 A CN102718338 A CN 102718338A CN 2012101603878 A CN2012101603878 A CN 2012101603878A CN 201210160387 A CN201210160387 A CN 201210160387A CN 102718338 A CN102718338 A CN 102718338A
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Abstract
The invention relates to a cyanogen-containing waste water treatment system, which comprises a pretreatment device, a gas liquid mixing apparatus and a reaction device, the pretreatment device is used for removing a suspended matter in the cyanogen-containing waste water, the gas liquid mixing apparatus comprises an ozone generation apparatus, a mixing device and a control module, the ozone generation apparatus is used for generating ozone, the mixing device is communicated with the ozone generation apparatus and is communicated with the pretreatment device, the mixing device is used for fully mixing cyanogen-containing waste water with ozone generated by the ozone generation apparatus, the control module enables electric connection with the ozone generation apparatus and the mixing device, the control module is used for controlling the work state of the ozone generation apparatus and the mixing device, the reaction device is communicated with the gas liquid mixing apparatus, and the reaction device is used for collecting the cyanogen-containing waste water which is fully mixed with ozone. The cyanogen-containing waste water treatment system can avoid secondary pollution. The invention also provides a cyanogen-containing waste water treatment method.
Description
Technical field
The present invention relates to a kind of cyanide wastewater treatment system and cyanide wastewater treatment process.
Background technology
Be accompanied by a large amount of cyanide wastewater in the exploitation of gold deposit process.The cyanide wastewater severe toxicity if do not handle, will cause huge harm to the environment and the people.Because the cyanide wastewater amount is bigger, the treatment process of current employing mainly is to use Youxiaolin, Losantin to carry out discharging after the oxidation.Youxiaolin (NaClO) makes the reaction process of cyanide oxidation mainly divide two stages, and the fs is to be cyanate with cyanide oxidation, and subordinate phase is that cyanate further is oxidized to carbonic acid gas and nitrogen.
Yet the chloride ion content that Youxiaolin, Losantin and cyanide wastewater reaction back produce exceeds standard, and can cause secondary pollution.
Summary of the invention
Based on this, be necessary to provide a kind of cyanide wastewater treatment system and the cyanide wastewater treatment process that can effectively avoid secondary pollution.
A kind of cyanide wastewater treatment system comprises:
Pre-processing device is used for removing the suspended substance of cyanide wastewater;
Gas-liquid mixed equipment comprises:
Ozone generating-device is used to produce ozone;
Mixing device is communicated with said ozone generating-device and said pre-processing device is communicated with, and said mixing device is used for the ozone thorough mixing with cyanide wastewater and the generation of said ozone generating-device; And
Control module is electrically connected with said ozone generating-device and said mixing device, and said control module is used to control the working order of said ozone generating-device and said mixing device; And
Conversion unit is communicated with gas-liquid mixed equipment, and said conversion unit is used to accommodate with the well-mixed cyanide wastewater of ozone and makes cyanide wastewater and ozone carries out oxidizing reaction.
Therein among embodiment, said pre-processing device comprises the sand filtering device that is communicated with successively and is used to setting device that cyanide wastewater is homogenized that said mixing device is communicated with said sand filtering device through said setting device.
Among embodiment, said pre-processing device comprises grid, setting device, dissolved air flotation device and the shallow pool air-floatation device that is communicated with successively therein, and said setting device is used to make cyanide wastewater to homogenize.
Among embodiment, said ozone generating-device comprises therein:
Air is electrically connected with said control module, and said air is used for air compression pressurization back output;
Oxygenerator is communicated with said control module electrical connection and with said air, and said oxygenerator is used for pressing the air of the back output of pressurizeing to process to be with in said air and presses oxygen rich gas; And
Ozonizer is communicated with said control module electrical connection and with said oxygenerator, and said ozonizer is used for pressing oxygen rich gas to excite on said band and processes ozone.
Among embodiment, said mixing device comprises therein:
Topping-up pump is electrically connected with said control module, and said topping-up pump is provided with water-in and water outlet, and said topping-up pump is used for cyanide wastewater is also flowed out by water outlet after pressurization by the water-in entering;
Ejector; Be used for cyanide wastewater is tentatively mixed with the ozone that said ozone generating-device produces; Said ejector is provided with water-in, inlet mouth and water outlet; The water-in of said ejector is connected with the water outlet of said topping-up pump, and the inlet mouth of said ejector is connected with said ozone generating-device; And
Hi-mixer is communicated with the water outlet of said ejector, and said Hi-mixer is used for preliminary blended ozone of process and cyanide wastewater are carried out thorough mixing.
Therein among embodiment; Said gas-liquid mixed equipment also comprises the water quality sensor device; Said water quality sensor device is electrically connected with said control module, and said water quality sensor device is used to gather cyanide wastewater information and cyanide wastewater information is sent to said control module.
Among embodiment, said conversion unit is reaction tower, reactive tank or reaction tank therein.
Among embodiment, said conversion unit is a reaction tower therein, and said reaction tower inside is filled with gac or bamboo charcoal.
A kind of cyanide wastewater treatment process of using above-mentioned cyanide wastewater treatment system may further comprise the steps:
Use pre-processing device to remove the suspended substance in the cyanide wastewater;
Control module control ozone generating-device produces ozone;
Mixing device mixes said ozone and said cyanide wastewater;
To inject fully reaction in the conversion unit with the cyanide wastewater that ozone mixes.
Therein among embodiment, use pre-processing device to remove the suspended substance in the cyanide wastewater after, suspension content is not higher than 70mg/L in the cyanide wastewater.
Above-mentioned cyanide wastewater treatment system and cyanide wastewater treatment process; Remove the suspended substance in the cyanide wastewater through pre-processing device, produce ozone, the ozone and the cyanide wastewater thorough mixing that through mixing device ozone generating-device are produced then through control module control ozone generating-device; Form ozone water; The cyanide wastewater that will mix with ozone at last injects fully reaction in the conversion unit, because the strong oxidizing property of ozone, and the CN in can the oxidation cyanide wastewater
-, the redundant ozone decomposition becomes oxygen, can not bring secondary pollution.
Description of drawings
Fig. 1 is the structural representation of the cyanide wastewater treatment system of an embodiment;
Fig. 2 is the structural representation of gas-liquid mixed equipment among Fig. 1;
Fig. 3 is the detailed block diagram of the water quality sensor device of gas-liquid mixed equipment among Fig. 2;
Fig. 4 is the schema of the cyanide wastewater treatment process of an embodiment.
Embodiment
For the ease of understanding the present invention, will more comprehensively describe the present invention with reference to relevant drawings below.Provided first-selected embodiment of the present invention in the accompanying drawing.But the present invention can realize with many different forms, be not limited to embodiment described herein.On the contrary, the purpose of these embodiment being provided is to make to disclosure of the present invention more thoroughly comprehensively.
Need to prove, when element is called as " being fixedly arranged on " another element, it can be directly on another element or also can have middle element.When an element is considered to " connection " another element, it can be to be directly connected to another element or possibly to have element placed in the middle simultaneously.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.
Only if definition is arranged in addition, the employed all technology of this paper are identical with the implication that belongs to those skilled in the art's common sense of the present invention with scientific terminology.Among this paper in specification sheets of the present invention employed term be not intended to be restriction the present invention just in order to describe the purpose of concrete embodiment.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
See also Fig. 1, the cyanide wastewater treatment system 10 of an embodiment comprises pre-processing device 100, gas-liquid mixed equipment 300 and conversion unit 500.
Dissolved air flotation device 130 is used for removing the bigger suspended substance of cyanide wastewater.In this embodiment, make the content of the suspended substance in the cyanide wastewater not be higher than 100mg/L after dissolved air flotation device 130 Treatment of Cyanide-containing Wastewater.
Shallow pool air-floatation device 140 is used for further removing the suspended substance of cyanide wastewater.In this embodiment, make the content of suspended substance in the cyanide wastewater not be higher than 70mg/L after shallow pool air-floatation device 140 Treatment of Cyanide-containing Wastewater.
Handling solids and the scum silica frost collected the back through pre-processing device 100 handles through sludge treating system (figure does not show).
See also Fig. 2, gas-liquid mixed equipment 300 comprises ozone generating-device 310, mixing device 320 and control module 330.
Ozone generating-device 310 is used to produce ozone gas.In the present embodiment, ozone generating-device 310 comprises air 311, oxygenerator 313 and ozonizer 315.
Air 311 is electrically connected with control module 330, and air 311 is used for air compression pressurization.
Ozonizer 315 is electrically connected with control module 330, and is communicated with institute oxygenerator 313.The band that ozonizer 315 is used for that oxygenerator 313 is made is pressed oxygen rich gas to excite and is processed ozone.Be appreciated that in other embodiments ozone generating-device 310 can be used replacements such as chemical generating unit.
Be provided with Forced water cooling device (figure do not show) in the ozonizer 315, the water-cooled effect improves a lot air-cooled with respect to traditional, and this helps reducing the temperature of ozonizer 315, prolongs the work-ing life of machine.Simultaneously, be provided with TP (figure do not show) in the Forced water cooling device, be used to detect the temperature of water coolant, and TP is electrically connected with control module 330, and detected temperature information is fed back to control module 330.Preestablished a temperature threshold in the control module 330, when the temperature that feeds back to control module 330 when TP surpassed this temperature threshold, control module 330 control ozonizers 315 broke off.This has prevented that effectively ozonizer 315 from working under too high temperature, further promoted the work-ing life of machine.Need to prove that air 311 can omit, only keep oxygenerator 313 and get final product with ozonizer 315.
In the present embodiment, mixing device 320 comprises topping-up pump 321, ejector 323 and Hi-mixer 325.
Topping-up pump 321 is electrically connected with control module 330.Topping-up pump 321 is communicated with shallow pool air-floatation device 140.Topping-up pump 321 is provided with water-in (figure does not mark) and water outlet (figure is mark), and the cyanide wastewater of handling through pre-processing device 100 is flowed out by water outlet after pressurization by the water-in entering of topping-up pump 321.
Hi-mixer 325 is used for process ejector 323 preliminary blended cyanide wastewater and ozone thorough mixing.Hi-mixer 325 is communicated with the water outlet of ejector 323.The water outlet of ejector 323 is effusive to be the mixture of ozone and cyanide wastewater, after in Hi-mixer 325, mixing fully, obtains ozone water.Be appreciated that mixing device 320 can install with other, replace like the high pressure stirrer.
Further, gas-liquid mixed equipment 300 also comprises water quality sensor device 340 and vacuum breaker 350.
See also Fig. 3, water quality sensor device 340 is electrically connected with control module 330.The water body information that water quality sensor device 340 is gathered cyanide wastewater like temperature, specific conductivity, dissolved oxygen amount, pH etc., and sends it to control module 330.Control module 330 is according to the water body information Control ozone generating-device 310 that obtains and the working order of mixing device 320 then.In the present embodiment, water quality sensor device 340 comprises conductivity sensor, cl ions transmitter, dissolved oxygen sensor, cooling-water temperature sensor and pH value transmitter.Be appreciated that water quality sensor device 340 includes but not limited to above-mentioned several kinds of transmitters, also can be a kind of or its combination in the above-mentioned several kinds of transmitters.
CN
-+O
3→CNO
-+O
2↑
2CNO
-+3O
3+H
2O→N
2↑＋2HCO
3 -+3O
2↑
The redundant ozone decomposition becomes oxygen, can not bring secondary pollution.
Be appreciated that conversion unit 500 is not limited to reaction tower, also can be reactive tank, reaction tank etc.
Above-mentioned cyanide wastewater treatment system 10 is removed the suspended substance in the cyanide wastewater through pre-processing device 100; Produce ozone through ozone generating-device 310; The ozone and the cyanide wastewater thorough mixing in mixing device 320 that then ozone generating-device 310 are produced form ozone water.Because the strong oxidizing property of ozone, the CN in can the oxidation cyanide wastewater
-, the redundant ozone decomposition becomes oxygen, can not bring secondary pollution.Ozone can be prepared by oxygen, can avoid buying, transportation and the storage of medicine, reduces cost.
Be appreciated that pre-processing device 100 is not limited to comprise grid 110, setting device 120, dissolved air flotation device 130 and the shallow pool air-floatation device 140 that is communicated with successively, also can be sand filtering device and the setting device that is communicated with successively.Sand filtering device is sand filter or sandfiltration pot.At this moment; Mixing device 320 is communicated with setting device; Use sand filtering device to remove suspended substance, insolubles and impurity in the cyanide wastewater, use setting device to regulate the water quality of cyanide wastewater afterwards, it is stable making the water quality of the cyanide wastewater that gets into gas-liquid mixed equipment 300.
See also Fig. 1 to Fig. 4, the cyanide wastewater treatment process of an embodiment may further comprise the steps:
Step S101, cyanide wastewater treatment system 10 is provided.
Step S102, use pre-processing device 110 are removed the suspended substance in the cyanide wastewater.
Concrete, use grid that cyanide wastewater is handled earlier, to remove insolubles impurity bigger in the cyanide wastewater; Then use setting device 120 to accommodate, the cyanide wastewater that is housed in setting device 120 is homogenized through the cyanide wastewater after grid 110 processing; Use dissolved air flotation device 130 to remove bigger suspended substance in the cyanide wastewater; Use shallow pool air-floatation device 140 further to remove the suspended substance in the cyanide wastewater at last.
Preferably, after use dissolved air flotation device 130 Treatment of Cyanide-containing Wastewater, the content of the suspended substance in the cyanide wastewater is not higher than 100mg/L; After using shallow pool air-floatation device 140 Treatment of Cyanide-containing Wastewater, the content of suspended substance is not higher than 70mg/L in the cyanide wastewater.
Step S103, control module 330 control ozone generating-devices 310 produce ozone.
In the present embodiment; Control module 330 control air compressors 311 are with air compression pressurization; The air that control module 330 control oxygenerators 313 compressed air 311 is processed band and is pressed oxygen rich gas, and the band that ozonizer 315 makes oxygenerator 313 is pressed oxygen rich gas to excite and processed ozone.
Preferably, the power of ozonizer is 3.3 kilowatts.
Step S104, use mixing device 320 mix ozone and cyanide wastewater.
The cyanide wastewater that the topping-up pump 321 of mixing device 320 will pass through 140 processing of shallow pool air-floatation device increases processing; Afterwards through increasing the water-in entering ejector 323 that the cyanide wastewater of handling passes through ejector 323; The ozone that ozone ozonizer 315 is produced gets into ejector 323 by the inlet mouth of ejector 323, and the cyanide wastewater and the ozone of 323 pairs of inputs of ejector tentatively mix.Afterwards, carry out preliminary blended cyanide wastewater and ozone and get into Hi-mixer 325, use 325 pairs of cyanide wastewater of Hi-mixer and ozone to mix fully.
Step S105, the cyanide wastewater that will mix with ozone inject fully reaction in the conversion unit 500.
In this embodiment, conversion unit 500 is a reaction tower.Be filled with bamboo charcoal or gac in the reaction tower.To get into reaction tower and fully oxidation in reaction tower from the bottom of the cyanide wastewater autoreaction tower that mixes with ozone of Hi-mixer 325 output, flow out from the top of reaction tower at last.Ozone and cyanide wastewater reaction process are following:
CN
-+O
3→CNO
-+O
2↑
2CNO
-+3O
3+H
2O→N
2↑＋2HCO
3 -+3O
2↑
The redundant ozone decomposition becomes oxygen, can not bring secondary pollution.
Above-mentioned cyanide wastewater treatment process; Remove the suspended substance in the cyanide wastewater through pre-processing device 100, produce ozone, the ozone and the cyanide wastewater thorough mixing that through mixing device 320 ozone generating-device 310 are produced then through ozone generating-device 310; Form ozone water; The cyanide wastewater that will mix with ozone at last injects fully reaction in the conversion unit 500, because the strong oxidizing property of ozone, and the CN in can the oxidation cyanide wastewater
-, the redundant ozone decomposition becomes oxygen, can not bring secondary pollution.Ozone can be prepared by oxygen, can avoid buying, transportation and the storage of medicine, reduces cost.
Need to prove; Above-mentioned cyanide wastewater treatment process might not be carried out according to cited order, can carry out simultaneously with control module 330 control ozone generating-devices 310 ozoniferous steps (step S103) such as the step (step S101) of using pre-processing device 110 to remove the suspended substance in the cyanide wastewater.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (10)
1. a cyanide wastewater treatment system is characterized in that, comprising:
Pre-processing device is used for removing the suspended substance of cyanide wastewater;
Gas-liquid mixed equipment comprises:
Ozone generating-device is used to produce ozone;
Mixing device is communicated with said ozone generating-device and said pre-processing device is communicated with, and said mixing device is used for the ozone thorough mixing with cyanide wastewater and the generation of said ozone generating-device; And
Control module is electrically connected with said ozone generating-device and said mixing device, and said control module is used to control the working order of said ozone generating-device and said mixing device; And
Conversion unit is communicated with gas-liquid mixed equipment, and said conversion unit is used to accommodate with the well-mixed cyanide wastewater of ozone and makes cyanide wastewater and ozone carries out oxidizing reaction.
2. cyanide wastewater treatment system according to claim 1; It is characterized in that; Said pre-processing device comprises successively the sand filtering device that is communicated with and is used to setting device that cyanide wastewater is homogenized that said mixing device is communicated with said sand filtering device through said setting device.
3. cyanide wastewater treatment system according to claim 1 is characterized in that, said pre-processing device comprises grid, setting device, dissolved air flotation device and the shallow pool air-floatation device that is communicated with successively, and said setting device is used to make cyanide wastewater to homogenize.
4. cyanide wastewater treatment system according to claim 1 is characterized in that, said ozone generating-device comprises:
Air is electrically connected with said control module, and said air is used for air compression pressurization back output;
Oxygenerator is communicated with said control module electrical connection and with said air, and said oxygenerator is used for pressing the air of the back output of pressurizeing to process to be with in said air and presses oxygen rich gas; And
Ozonizer is communicated with said control module electrical connection and with said oxygenerator, and said ozonizer is used for pressing oxygen rich gas to excite on said band and processes ozone.
5. cyanide wastewater treatment system according to claim 1 is characterized in that, said mixing device comprises:
Topping-up pump is electrically connected with said control module, and said topping-up pump is provided with water-in and water outlet, and said topping-up pump is used for cyanide wastewater is also flowed out by water outlet after pressurization by the water-in entering;
Ejector; Be used for cyanide wastewater is tentatively mixed with the ozone that said ozone generating-device produces; Said ejector is provided with water-in, inlet mouth and water outlet; The water-in of said ejector is connected with the water outlet of said topping-up pump, and the inlet mouth of said ejector is connected with said ozone generating-device; And
Hi-mixer is communicated with the water outlet of said ejector, and said Hi-mixer is used for preliminary blended ozone of process and cyanide wastewater are carried out thorough mixing.
6. cyanide wastewater treatment system according to claim 1; It is characterized in that; Said gas-liquid mixed equipment also comprises the water quality sensor device; Said water quality sensor device is electrically connected with said control module, and said water quality sensor device is used to gather cyanide wastewater information and cyanide wastewater information is sent to said control module.
7. cyanide wastewater treatment system according to claim 1 is characterized in that, said conversion unit is reaction tower, reactive tank or reaction tank.
8. cyanide wastewater treatment system according to claim 1 is characterized in that, said conversion unit is a reaction tower, and said reaction tower inside is filled with gac or bamboo charcoal.
9. a cyanide wastewater treatment process of using each described cyanide wastewater treatment system of claim 1 ~ 8 is characterized in that, may further comprise the steps:
Use pre-processing device to remove the suspended substance in the cyanide wastewater;
Control module control ozone generating-device produces ozone;
Mixing device mixes said ozone and said cyanide wastewater;
To inject fully reaction in the conversion unit with the cyanide wastewater that ozone mixes.
10. cyanide wastewater treatment process according to claim 9 is characterized in that, after the use pre-processing device was removed the suspended substance in the cyanide wastewater, suspension content was not higher than 70mg/L in the cyanide wastewater.
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| CN2012101603878A CN102718338A (en) | 2012-05-22 | 2012-05-22 | Cyanogen-containing waste water treatment system and cyanogen-containing waste water treatment method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502628A (en) * | 2015-12-03 | 2016-04-20 | 湖南城市学院 | Cycling treatment system for low-concentration cyanide-containing wastewater |
| CN106630101A (en) * | 2017-01-05 | 2017-05-10 | 中国科学院上海高等研究院 | Device and method based on micro/nano gas bubble cyanogen breaking |
| CN107640819A (en) * | 2016-07-20 | 2018-01-30 | 北京金大万翔环保科技有限公司 | A kind of ozone adds water treatment experimental device and method |
| CN112707394A (en) * | 2020-12-10 | 2021-04-27 | 六盘水师范学院 | Method for removing cyanogen and recovering graphite by electrolysis under alkaline condition |
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| CN202594893U (en) * | 2012-05-22 | 2012-12-12 | 深圳力合环保技术有限公司 | Cyanogen-containing wastewater treatment system |
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| CN101468844A (en) * | 2007-12-29 | 2009-07-01 | 深圳市亚美加实业发展有限公司 | Ozone water treatment system |
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| CN105502628A (en) * | 2015-12-03 | 2016-04-20 | 湖南城市学院 | Cycling treatment system for low-concentration cyanide-containing wastewater |
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| CN112707394A (en) * | 2020-12-10 | 2021-04-27 | 六盘水师范学院 | Method for removing cyanogen and recovering graphite by electrolysis under alkaline condition |
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Application publication date: 20121010 |