CN105084598B - A kind of mercurous, cadmium, the processing method of lead liquid waste treating apparatus - Google Patents
A kind of mercurous, cadmium, the processing method of lead liquid waste treating apparatus Download PDFInfo
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- CN105084598B CN105084598B CN201510536420.6A CN201510536420A CN105084598B CN 105084598 B CN105084598 B CN 105084598B CN 201510536420 A CN201510536420 A CN 201510536420A CN 105084598 B CN105084598 B CN 105084598B
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Abstract
The invention discloses the processing method of a kind of mercurous, cadmium, lead liquid waste treating apparatus.Its processing method is specifically carried out according to the following steps：1）Adjust PH, primary sedimentation reaction；2）Secondary precipitation is reacted；3）Flocculation；4）Secondary filtration；5）Discharge is neutralized.Apparatus of the present invention are by increasing flocculant into reaction vessel, and filtering container is provided with transition container, solid particulate matter is thus set to turn into dough after flocculation, again by the primary filter of filtering container, 99% mercury, cadmium, lead sediment is have collected, treatment effeciency is high, it is convenient to collect processing solids, time and cost are saved, while improving mercurous, cadmium, the treatment effect of lead waste liquid so that waste liquid reaches discharge standard.
Description
Technical field
The invention belongs to chemical waste fluid processing unit field, more specifically to composition is more complicated and amount is small mercury,
The processing unit of cadmium, lead waste liquid, this device is particularly suitable for use in the Pollution Source Monitoring stations of chemical laboratory and various regions, further relates at it
Reason method.
Background technology
With continuing to develop for social industry, environmental pollution is also increasingly serious, and various regions environmental administration requires that enterprise installs
Online monitoring of pollution sources equipment（Monitor COD, ammonia nitrogen, pH etc.）, and produced waste liquid is most in itself for these on-line monitoring equipment
Containing harmful heavy metal ion, such as mercury, cadmium, lead ion, if being directly discharged into sewer without processing, cause serious two
Secondary pollution.The way relatively passed through at present is that the heavy metal in poisonous and harmful waste liquid is handled, reclaimed, and is sent to after concentration specially
Industry waste liquid treatment station dissolve processing, and such a method will spend a large amount of manpowers, financial resources because handle the mercury of identical weight, cadmium,
Expense required for lead waste liquid is sometimes more taller than buying new chemical reagent expense.
Although in the market also occurs in that some are directed to the device that above-mentioned waste liquid is handled successively, due to the spy of apparatus structure
Solid chemicals in existing handling process must be all changed to liquid chemical reagent, for going out in waste liquid simultaneously by different property
When existing mercury, cadmium, three metal ion species of lead, interference occurs when first post-processing, heavy metal ion final process result is influenceed, is badly in need of
This problem to be solved.
The content of the invention
Problem to be solved by this invention is to provide a kind of mercurous, cadmium, the processing method of lead liquid waste treating apparatus, ensures dress
The normal operation put, improves the treatment effect of heavy metal in waste liquid ion.
A kind of mercurous, cadmium of the present invention, the processing method of lead liquid waste treating apparatus, the device include medicament and extracted with mixing anti-
Should part, flocculation and filtration fraction, neutralization and discharge unit and corresponding with circuits, its processing method is specifically entered according to the following steps
OK：
1）Peristaltic pump is by a certain amount of mercurous, cadmium, lead waste liquid from reagent barrel is drawn into reaction vessel, and then peristaltic pump will
A certain amount of ammoniacal liquor from reagent barrel is drawn into reaction vessel, adjusts the PH of waste liquid with NaOH or potassium hydroxide mixing liquid
It is worth to 9-11, Hg+、Hg2+、Pb+、Cd2+Ion is and OH-Reaction generation compound state precipitation；
2）PH value is being kept to be 9-11, peristaltic pump extracts Na from reagent barrel2S or NaHS solution makes Hg into reaction vessel+、
Hg2+Ion is further converted to sulphur compound state precipitation；
3）Flocculation：Flocculation peristaltic pump from flocculation agent bucket in extract a certain amount of alum solution in reaction vessel, make mercury,
Cadmium, the flocculation of lead solid sediment；
4）Secondary filtration：Mixed liquor in transition container carries out quantitative extract through measuring pump and filtered by two class precisions of height
Device is filtered, and primary filter removes mercury, cadmium, the sediment of lead, and secondary filtration removes suspension in water, and wherein secondary filtration is precision
Filtering（Precision is at 0.4-0.1 microns）, because sediment belongs to dangerous solid waste, collect and preserve and send hazardous waste to handle
Center；
5）Discharge is neutralized：Solution after filtering, which enters, neutralizes container, and setting value is reached when liquid level sensor detects liquid level
Afterwards, PH counts the pH value detected by system feedback, if pH value is up to standard, you can opens solenoid valve is discharged, if pH value
It is not up to standard, that is, open the reagent neutralized in peristaltic pump pumps reagent barrel and carry out neutralization reaction into neutralization container, the phase is reacted herein
Between air pump continue air-blowing to container is neutralized to promote reaction abundant, when PH count to detected by system feedback pH value is 6-9
When interval, that is, stop N-process, and opens solenoid valve is discharged.
Wherein, if medicament is extracted includes dry reaction peristaltic pump, some reagent barrels, reaction vessel, mistake with hybrid reaction part
Cross container；In one end pipe insertion reagent barrel for reacting peristaltic pump, in other end pipe intercalation reaction container, transition container is placed in
The lower end of reaction vessel；Flocculation includes flocculation peristaltic pump, flocculation agent bucket, filtering container with filtration fraction, flocculation peristaltic pump
In the pipe insertion flocculation agent bucket of one end, in other end pipe intercalation reaction container, filtering container is placed on opening for transition container
On mouth, magnetic valve is set on the pipeline between reaction vessel and filtering container；Neutralize with discharge unit include neutralize peristaltic pump, in
With reagent barrel, neutralization container, electromagnetic dosing pump, draining solenoid valve, in one end pipe insertion neutralization reagent bucket for neutralizing peristaltic pump,
The insertion of other end pipe is neutralized in container, and the pipe in transition container is led to above neutralization container, and electromagnetism meter is set on pipe
Pump is measured, the bottom for neutralizing container is provided with draining solenoid valve.
Further, in step 1）In, described ammoniacal liquor and the mol ratio of NaOH or potassium hydroxide is 1:3~5,
Due to Hg+、Hg2+Can be with OH-Reaction, and reaction product is unstable, the now presence of ammonium ion, can prevent two kinds of ions
Reaction.
Apparatus of the present invention filter container by increasing flocculant into reaction vessel, and being provided with transition container,
Thus make solid particulate matter after flocculation turn into dough, then by filtering container primary filter, have collected 99% mercury,
Cadmium, lead sediment, treatment effeciency are high, convenient to collect processing solids, have saved time and cost, at the same improve mercurous, cadmium,
The treatment effect of lead waste liquid so that waste liquid reaches discharge standard.
Brief description of the drawings
Fig. 1 is the front view of liquid waste treating apparatus of the present invention；
Fig. 2 is Fig. 1 rearview；
Fig. 3 is the principle schematic of liquid waste treating apparatus of the present invention（Arrow meaning is liquid flow direction in figure）.
Embodiment
Knowable to accompanying drawing, the mercurous, cadmium of present invention one kind, lead liquid waste treating apparatus, it includes medicament and extracted and hybrid reaction
Partly, flocculation and filtration fraction, neutralization and discharge unit and corresponding with circuits.
Wherein, medicament is extracted holds with hybrid reaction part including three reaction peristaltic pump 1-1, three reagent barrel 1-2, reactions
Device 6, transition container 10；In one end pipe insertion reagent barrel 1-2 for reacting peristaltic pump 1-1, other end pipe intercalation reaction container 6
In, transition container 10 is placed in the lower end of reaction vessel 6；Flocculation includes flocculation peristaltic pump 2-1, flocculation agent bucket 2- with filtration fraction
2nd, filter in container 9, flocculation peristaltic pump 2-1 one end pipe insertion flocculation agent bucket 2-2, other end pipe intercalation reaction container
In 6, filtering container 9 is placed in the opening of transition container 10, and electricity is set on the pipeline 5 between reaction vessel 6 and filtering container 9
Magnet valve 7；Neutralize includes neutralizing peristaltic pump 3-1, neutralization reagent bucket 3-2, neutralizes container 8, electromagnetic dosing pump 12, row with discharge unit
In liquid electromagnetic valve 14, one end pipe insertion neutralization reagent bucket 3-2 for neutralizing peristaltic pump 3-1, the insertion of other end pipe neutralizes container 8
In, the pipe 11 in transition container 10 is led to above neutralization container 8, and electromagnetic dosing pump 12 is set on pipe, neutralizes container 8
Bottom is provided with draining solenoid valve 14.
As a modification of the present invention mode, flocculation also includes flocculation stirring pump 4, flocculation stirring pump 4 with filtration fraction
To flocculation agent bucket 2-2 reagent be stirred, flocculant is sufficiently carried out in reaction vessel 6, make as far as possible mercury, cadmium,
Lead solid sediment flocculates.
As a modification of the present invention mode, flocculation also includes secondary filter 13, secondary filter with filtration fraction
13 are arranged on the pipeline between transition container 10 and neutralization container 8.Secondary filter 13 can be carried out to the impurity in pipeline
Further filtering, and because the flocculate of the overwhelming majority is intercepted by filtering container 9, therefore the filter core service life of this filter
It is long, and improve operating efficiency.
As a modification of the present invention mode, flocculation also includes pressure detecting part, pressure detecting portion with filtration fraction
Dividing includes pressure transmitter 15 and manual switch valve 16, and pressure transmitter 15 is between secondary filter 13 and transition container 10
Pipeline on, manual switch valve 16 be in secondary filter 13 two ends.So, when sediment of the secondary filter 13 because of collection
Pressure can be raised when excessively blocking, and pressure transmitter 15, which detects to feed back to when system pressure rises to setting value, is
System, is then shut off manual switch valve 14, to change the filter core of secondary filter 13.
A kind of processing method of said apparatus is specific according to the following steps to carry out：
1）Peristaltic pump is by a certain amount of mercurous, cadmium, lead waste liquid from reagent barrel is drawn into reaction vessel, and then peristaltic pump will
A certain amount of ammoniacal liquor from reagent barrel is drawn into reaction vessel, adjusts the PH of waste liquid with NaOH or potassium hydroxide mixing liquid
It is worth to 10, Hg+、Hg2+、Pb+、Cd2+Ion is and OH-Reaction generation compound state precipitation, wherein ammoniacal liquor and NaOH or hydrogen-oxygen
The mol ratio for changing potassium is 1:4, due to Hg+、Hg2+Can be with OH-Reaction, and reaction product is unstable, now ammonium ion
In the presence of the reaction of two kinds of ions can be prevented；
2）PH value is being kept to be 10, peristaltic pump extracts Na from reagent barrel2S or NaHS solution makes Hg into reaction vessel+、
Hg2+Ion is further converted to sulphur compound state precipitation；
3）Flocculation：Flocculation peristaltic pump from flocculation agent bucket in extract a certain amount of alum solution in reaction vessel, make mercury,
Cadmium, the flocculation of lead solid sediment；
4）Secondary filtration：Mixed liquor in transition container carries out quantitative extract through measuring pump and filtered by two class precisions of height
Device is filtered, and primary filter removes mercury, cadmium, the sediment of lead, and secondary filtration removes suspension in water, and wherein secondary filtration is precision
Filtering（Precision is at 0.4-0.1 microns）, because sediment belongs to dangerous solid waste, collect and preserve and send hazardous waste to handle
Center；
5）Discharge is neutralized：Solution after filtering, which enters, neutralizes container, and setting value is reached when liquid level sensor detects liquid level
Afterwards, PH counts the pH value detected by system feedback, if pH value is up to standard, you can opens solenoid valve is discharged, if pH value
It is not up to standard, that is, open the reagent neutralized in peristaltic pump pumps reagent barrel and carry out neutralization reaction into neutralization container, the phase is reacted herein
Between air pump continue air-blowing to container is neutralized to promote reaction abundant, when PH count to detected by system feedback pH value is 6-9
When interval, that is, stop N-process, and opens solenoid valve is discharged.
Apparatus of the present invention add flocculant and many one of primary filter, two in filtering container in neutralization reactor
Filter core is still used in level filtering；Because solid particulate matter is after flocculation turns into dough, by primary filter just have collected 99%
Flocculation after particulate matter, therefore compared to the original two-stage filter core mode for being not added with flocculant, the present invention, which had both extended filter core, to be made
With the life-span, cost is reduced, operating efficiency is improved again.
Concentration of emission is allowed to compare taken mercurous, cadmium, the result of lead waste liquid and standard using apparatus of the present invention,
As listed by following table：
| Pollutant | Standard allows concentration of emission mg/L | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Total mercury | 0.05 | 0.001 | 0.001 | 0.001 |
| Total cadmium | 0.1 | 0.055 | 0.059 | 0.041 |
| Total lead | 1.0 | 0.65 | 0.73 | 0.82 |
It can be learnt by upper table data, it is ensured that waste water ion concentration meets emission request.
Claims (5)
1. a kind of mercurous, cadmium, the processing method of lead liquid waste treating apparatus, it is characterised in that：The device includes medicament and extracted with mixing
Close reactive moieties, flocculation and filtration fraction, neutralization and discharge unit and it is corresponding match somebody with somebody circuits, its processing method has according to the following steps
Body is carried out：1) peristaltic pump is by a certain amount of mercurous, cadmium, lead waste liquid from reagent barrel is drawn into reaction vessel, and then peristaltic pump will
A certain amount of ammoniacal liquor from reagent barrel is drawn into reaction vessel, adjusts the pH of waste liquid with NaOH or potassium hydroxide mixing liquid
It is worth to 9-11, Hg+、Hg2+、Pb+、Cd2+Ion is and OH-Reaction generation compound state precipitation；2) it is 9-11 keeping pH values, it is compacted
Dynamic pump extracts Na from reagent barrel2S or NaHS solution makes Hg into reaction vessel+、Hg2+Ion is further converted to sulphur compound state
Precipitation；3) flocculation peristaltic pump extracts a certain amount of alum solution in reaction vessel from flocculation agent bucket, makes mercury, cadmium, lead solid
Sediment flocculates；4) mixed liquor in transition container carries out quantitative extract by two class precision filter mistakes of height through measuring pump
Filter, primary filter removes mercury, cadmium, the sediment of lead, and secondary filtration removes suspension in water, and wherein secondary filtration is accurate mistake
Filter, because sediment belongs to dangerous solid waste, collects and preserves and send hazardous waste processing center；5) solution after filtering enters
Enter to neutralize container, after liquid level sensor, which detects liquid level, reaches setting value, pH counts the pH values detected by system feedback,
If pH values are up to standard, you can opens solenoid valve is discharged, if pH values are not up to standard, that is, open and neutralize peristaltic pump pumps reagent
Reagent in bucket carries out neutralization reaction into neutralization container, and air pump continues air-blowing to promote to neutralization container during reacting herein
Reaction is abundant, when PH is counted to when obtaining pH values detected by system feedback for 6-9 intervals, that is, stops N-process, and open electromagnetism
Valve is discharged；Described ammoniacal liquor is 1 with the mol ratio of NaOH or potassium hydroxide:3~5.
2. mercurous, cadmium according to claim 1, the processing method of lead liquid waste treating apparatus, it is characterised in that：Described device
If medicament extract with hybrid reaction part include dry reaction peristaltic pump (1-1), some reagent barrels (1-2), reaction vessel (6),
In transition container (10), one end pipe insertion reagent barrel (1-2) of reaction peristaltic pump (1-1), other end pipe intercalation reaction holds
In device (6), transition container (10) is placed in the lower end of reaction vessel (6)；Flocculation with filtration fraction include flocculation peristaltic pump (2-1),
In flocculation agent bucket (2-2), filtering container (9), one end pipe insertion flocculation agent bucket (2-2) of flocculation peristaltic pump (2-1), separately
In one end pipe intercalation reaction container (6), filtering container (9) be placed in the opening of transition container (10), reaction vessel (6) with
Filter and magnetic valve (7) is set on the pipeline (5) between container (9)；Neutralize with discharge unit include neutralize peristaltic pump (3-1), in
With reagent barrel (3-2), neutralization container (8), electromagnetic dosing pump (12), draining solenoid valve (14), one end of peristaltic pump (3-1) is neutralized
In pipe insertion neutralization reagent bucket (3-2), the insertion of other end pipe is neutralized in container (8), the pipe in transition container (10)
(11) lead to above neutralization container (8), electromagnetic dosing pump (12) is set on pipe, the bottom for neutralizing container (8) is provided with row
Liquid electromagnetic valve (14).
3. mercurous, cadmium according to claim 2, the processing method of lead liquid waste treating apparatus, it is characterised in that：Described device
Flocculation and filtration fraction also include secondary filter (13), secondary filter (13) is arranged on transition container (10) to be held with neutralizing
On pipeline between device (8).
4. mercurous, cadmium according to claim 3, the processing method of lead liquid waste treating apparatus, it is characterised in that：Described device
Flocculation and filtration fraction also include pressure detecting part, pressure detecting portion point includes pressure transmitter (15) and manual switch valve
(16), pressure transmitter (15) is on the pipeline between secondary filter (13) and transition container (10), manual switch valve
(16) two ends of secondary filter (13) are in.
5. mercurous, cadmium according to claim 4, the processing method of lead liquid waste treating apparatus, it is characterised in that：Described device
Flocculation and filtration fraction also include flocculation stirring pump (4), flocculation stirring pump (4) is carried out to the reagent of flocculation agent bucket (2-2)
Stirring.
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| CN201510536420.6A CN105084598B (en) | 2015-08-28 | 2015-08-28 | A kind of mercurous, cadmium, the processing method of lead liquid waste treating apparatus |
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| CN105084598B true CN105084598B (en) | 2017-07-14 |
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|---|---|---|---|---|
| CN86108101A (en) * | 1986-12-30 | 1988-08-24 | 曾祥仁 | The integrated conduct method that contains heavy metal containing sewage |
| CN1733617A (en) * | 2004-08-11 | 2006-02-15 | 巨化集团公司 | Processing method of waste water containing fluorine arsenic and lead |
| CN101186373A (en) * | 2007-11-30 | 2008-05-28 | 华南理工大学 | Method for processing paroxysmal mercury polluted water under emergency condition |
| CN102372377A (en) * | 2011-09-09 | 2012-03-14 | 天辰化工有限公司 | Method for advanced treatment of mercury-containing wastewater |
| CN102583836A (en) * | 2012-03-15 | 2012-07-18 | 南京银茂铅锌矿业有限公司 | Method for treating copper/lead/zinc ore mining sewage |
-
2015
- 2015-08-28 CN CN201510536420.6A patent/CN105084598B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108101A (en) * | 1986-12-30 | 1988-08-24 | 曾祥仁 | The integrated conduct method that contains heavy metal containing sewage |
| CN1733617A (en) * | 2004-08-11 | 2006-02-15 | 巨化集团公司 | Processing method of waste water containing fluorine arsenic and lead |
| CN101186373A (en) * | 2007-11-30 | 2008-05-28 | 华南理工大学 | Method for processing paroxysmal mercury polluted water under emergency condition |
| CN102372377A (en) * | 2011-09-09 | 2012-03-14 | 天辰化工有限公司 | Method for advanced treatment of mercury-containing wastewater |
| CN102583836A (en) * | 2012-03-15 | 2012-07-18 | 南京银茂铅锌矿业有限公司 | Method for treating copper/lead/zinc ore mining sewage |
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Inventor after: Chu Yuexi Inventor after: Wang Shen Inventor after: Chu Yuehai Inventor after: Wu Chencheng Inventor after: Xie Tao Inventor after: Tang Shengwei Inventor after: Tao Chen Inventor after: Wang Zhihui Inventor after: Zhang Juan Inventor before: Chu Yuexi Inventor before: Wang Shen Inventor before: Wu Chencheng Inventor before: Tang Shengwei Inventor before: Tao Chen Inventor before: Wang Zhihui Inventor before: Zhang Jie Inventor before: He Jinbao Inventor before: Zhang Juan |
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Denomination of invention: Treatment method of treatment device for mercury, cadmium and lead-contained liquid waste Effective date of registration: 20190619 Granted publication date: 20170714 Pledgee: Huizhou Commercial Bank Co., Ltd. Ma'anshan Hunan Road Branch Pledgor: Ma'anshan Hengtai Environment Protection Equipment Co.,Ltd. Registration number: 2019340000307 |
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Date of cancellation: 20220322 Granted publication date: 20170714 Pledgee: Huizhou Commercial Bank Co.,Ltd. Ma'anshan Hunan Road Branch Pledgor: MA'ANSHAN HENGTAI ENVIRONMENT PROTECTION EQUIPMENT Co.,Ltd. Registration number: 2019340000307 |