CN109502863A - The processing unit of saliferous organic matter acid metal waste water - Google Patents
The processing unit of saliferous organic matter acid metal waste water Download PDFInfo
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- CN109502863A CN109502863A CN201811428485.9A CN201811428485A CN109502863A CN 109502863 A CN109502863 A CN 109502863A CN 201811428485 A CN201811428485 A CN 201811428485A CN 109502863 A CN109502863 A CN 109502863A
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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
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/72—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
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The present invention provides a kind of processing units of saliferous organic matter acid metal waste water.The device includes: pH regulating device, for adjusting the pH value of saliferous organic matter acid metal waste water to alkalinity to obtain alkaline waste water；Oxidative degradation device is connected with pH regulating device, for removing the COD in alkaline waste water to obtain pretreated waste water；Settler is connected with oxidative degradation device, for removing the heavy metal ion in pretreated waste water using precipitation reaction to obtain secondary treatment waste water；Vaporising device is connected with settler, is purified water for being evaporated crystallization to secondary treatment waste water to remove salinity therein.Saliferous organic matter acid metal waste water is handled using the device, process flow is simple, equipment manufacturing cost is low, occupied area is small.Meanwhile low energy consumption for wastewater treatment, treated, and water is distilled water, quality height, and processing cost is low, and has good ecological effect.
Description
Technical field
The present invention relates to industrial waste water treatments, useless in particular to a kind of saliferous organic matter acid metal
The processing unit of water.
Background technique
With the propulsion of industrialization and urbanization, the annual production such as plating, printing and dyeing, mining, metallurgy and chemical industry largely contains
The waste water of heavy metal ion, gets worse so as to cause heavy metal pollution.Heavy metal is difficult to degrade and can pass through food chain biology
Enrichment is constituted and is seriously threatened to biology and human health.
In recent years, heavy metal wastewater thereby Treatment process is quickly grown, new technology, new method are continuously emerged, but in practice
It was found that the methods of traditional neutralization precipitation, vulcanization, ion exchange, reverse osmosis, ferrite and absorption are in processing heavy metal wastewater thereby
Middle Shortcomings, such as treatment process are longer, treatment conditions are harsh, higher cost, waste residue is more, introduce secondary pollution, processing
The problems such as limited is measured, needs to continuously improve and develop new processing technique.Especially when there are high COD (chemical oxygen demands in waste water
Amount) when, above method can not remove it.In numerous industrial wastewaters, saliferous organic matter acid metal waste water is often
Because with salt concentration height, content of beary metal height, COD high, complicated component and the features such as carrying out water unstable processing hardly possible with higher
Degree, especially the rigors of zero-emission also bring bigger processing difficulty.
Summary of the invention
The main purpose of the present invention is to provide a kind of processing units of saliferous organic matter acid metal waste water, existing to solve
The problem for having the process flow of the saliferous organic matter acid metal waste water in technology long, at high cost, processing difficulty is big.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of saliferous organic matter acid metal is useless
The processing unit of water comprising: pH regulating device, for adjust the pH value of saliferous organic matter acid metal waste water to alkalinity with
To alkaline waste water；Oxidative degradation device is connected with pH regulating device, for removing the COD in alkaline waste water to be pre-processed
Waste water；Settler is connected with oxidative degradation device, for utilizing the heavy metal ion in precipitation reaction removal pretreated waste water
To obtain secondary treatment waste water；Vaporising device is connected with settler, for being evaporated crystallization to secondary treatment waste water to go
Except salinity therein is purified water.
Further, processing unit further includes pH adjusting agent feeding mechanism, pH adjusting agent feeding mechanism and pH regulating device
It is connected, is used as pH adjusting agent for supplying sodium hydroxide and/or the one or more of potassium hydroxide into pH regulating device.
Further, processing unit further includes degradation agent delivery device, and degradation agent delivery device and oxidative degradation fill
Set it is connected, for into oxidative degradation device supply hypochlorite, hydrogen peroxide, K2FeO4, potassium permanganate, perchloric acid and hypochlorous acid
One of or it is a variety of as degradation reagent.
Further, settler includes: precipitation unit, is connected respectively with oxidative degradation device and vaporising device, precipitating
Unit is used for using the heavy metal ion in precipitation reaction removal pretreated waste water to obtain secondary treatment waste water；Precipitating reagent supply
Device is connected with precipitation unit, for supplying precipitating reagent into precipitation unit.
Further, precipitation unit is provided with pretreated waste water import and precipitation reaction product exit, pretreated waste water into
Mouth is connected with oxidative degradation device；Settler further includes coagulation unit, and coagulation unit is provided with coagulation water inlet and supernatant
Outlet, coagulation water inlet is connected with precipitation reaction product exit, and supernatant outlet is connected with vaporising device.
Further, coagulation unit also sets up coagulant import, settler further include: aluminium polychloride supply unit,
For supplying aluminium polychloride to coagulation unit；Polyacrylamide supply unit, for supplying polyacrylamide to coagulation unit.
Further, processing unit be additionally provided with absorption except golden clothes are set, absorption except golden clothes install supernatant outlet with
On the pipeline being connected between vaporising device.
Further, absorption removes golden clothes and sets including adsorption tower and the physical absorption oxidant layer being arranged in inside adsorption tower, absorption
Tower is provided with tower entrance and out tower mouth, and tower entrance is connected with supernatant outlet, and tower mouth is connected with vaporising device out.
Further, coagulation unit is additionally provided with sludge outlet, and processing unit further includes filter-pressing device, filter-pressing device setting
There are sludge import, pressing filtering liquid outlet and sludge outlet, sludge import to be connected with sludge outlet, pressing filtering liquid outlet and pH regulating device
It is connected so that the pressing filtering liquid of pressing filtering liquid outlet discharge is back to pH regulating device.
Further, vaporising device is multi-effect evaporator, MVR evaporator or MVC evaporator.
The processing unit of saliferous organic matter acid metal waste water provided by the invention, adjusting saliferous using pH regulating device has
PH value to the alkalinity of machine matter acid metal waste water can obtain alkaline waste water.Under alkaline state, oxidative degradation device is utilized
Oxidative degradation mode can effectively remove the COD in alkaline waste water, obtain pretreated waste water.Then, it is utilized in settler
The form removing that precipitation reaction can precipitate the heavy metal ion in pretreated waste water, obtains secondary treatment waste water.Finally,
The salinity in secondary treatment waste water can be removed in the way of evaporative crystallization by vaporising device, is purified water.Using this
The device that invention provides handles saliferous organic matter acid metal waste water, and entire process flow is simple, equipment manufacturing cost is low, occupied area
It is small.Meanwhile low energy consumption for wastewater treatment of the invention, treated, and water is distilled water, quality height, and processing cost is low, and has good
Good ecological effect.It is highly preferred that whole device vertical arrangement, can further decrease occupied area, processing cost is reduced.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the knot of the processing unit of saliferous organic matter acid metal waste water according to an embodiment of the present
Structure block diagram.
Wherein, the above drawings include the following reference numerals:
10, pH regulating device；20, oxidative degradation device；30, settler；31, precipitation unit；32, precipitating reagent supply dress
It sets；33, coagulation unit；34, aluminium polychloride supply unit；35, polyacrylamide supply unit；40, vaporising device；50,pH
Regulator feeding mechanism；60, degradation agent delivery device；70, it adsorbs except golden clothes are set；80, filter-pressing device；90, ultrafiltration apparatus；
100, reverse osmosis unit.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The application is described in further detail below in conjunction with specific embodiment, these embodiments should not be understood as limitation originally
Apply for range claimed.
As described in background technology part, the process flow of saliferous organic matter acid metal waste water in the prior art
It is long, at high cost, processing difficulty is big.
The present invention provides a kind of processing units of saliferous organic matter acid metal waste water in order to solve this problem, such as scheme
Shown in 1 comprising pH regulating device 10, oxidative degradation device 20, settler 30 and vaporising device 40；PH regulating device 10 is used
In adjust saliferous organic matter acid metal waste water pH value to alkalinity to obtain alkaline waste water；Oxidative degradation device 20 and pH are adjusted
Device 10 is connected, for removing the COD in alkaline waste water to obtain pretreated waste water；Settler 30 and oxidative degradation device 20
It is connected, for removing the heavy metal ion in pretreated waste water using precipitation reaction to obtain secondary treatment waste water；Vaporising device
40 are connected with settler 30, are purified water for being evaporated crystallization to secondary treatment waste water to remove salinity therein.
The processing unit of saliferous organic matter acid metal waste water provided by the invention adjusts saliferous using pH regulating device 10
The pH value of organic matter acid metal waste water to alkalinity can obtain alkaline waste water.Under alkaline state, oxidative degradation device is utilized
20 oxidative degradation mode can effectively remove the COD in alkaline waste water, obtain pretreated waste water.Then, in settler 30
The middle form removing that can be precipitated the heavy metal ion in pretreated waste water using precipitation reaction, it is useless to obtain secondary treatment
Water.Finally, the salinity in secondary treatment waste water can be removed in the way of evaporative crystallization by vaporising device 40, it is purified
Water.Saliferous organic matter acid metal waste water is handled using device provided by the invention, entire process flow is simple, equipment manufacturing cost
It is low, occupied area is small.Meanwhile low energy consumption for wastewater treatment of the invention, treated, and water is distilled water, quality height, processing cost
It is low, and there is good ecological effect.It is highly preferred that whole device vertical arrangement, can further decrease occupied area, reduce
Processing cost.
In a preferred embodiment, processing unit further includes pH adjusting agent feeding mechanism 50, pH adjusting agent supply
Device 50 is connected with pH regulating device 10, for supplying sodium hydroxide and/or potassium hydroxide into pH regulating device 10 as pH
Regulator.The pH value of saliferous organic matter acid metal waste water can be more easily adjusted in this way.
In a preferred embodiment, processing unit further includes degradation agent delivery device 60, agent delivery of degrading
Device 60 is connected with oxidative degradation device 20, for supplying hypochlorite, hydrogen peroxide, K into oxidative degradation device 202FeO4, it is high
One of potassium manganate, perchloric acid and hypochlorous acid are a variety of as degradation reagent.It in this way can be more fully in degrading waste water
COD, and utilize above-mentioned degradation reagent, better processing effect.
In a preferred embodiment, settler 30 includes precipitation unit 31 and precipitating reagent feeding mechanism 32；It is heavy
Shallow lake unit 31 is connected with oxidative degradation device 20 and vaporising device 40 respectively, and precipitation unit 31 is used to remove using precipitation reaction pre-
The heavy metal ion in waste water is handled to obtain secondary treatment waste water；Precipitating reagent feeding mechanism 32 is connected with precipitation unit 32, uses
In supplying precipitating reagent into precipitation unit 32.It is passed through precipitating reagent into precipitation unit 31 using precipitating reagent feeding mechanism 32, heavy
Precipitation reaction is carried out in shallow lake unit 31, converts Precipitation for the heavy metal ion in pretreated waste water.
In order to further increase the effect of precipitation reaction, in a preferred embodiment, precipitation unit 31 is provided with
Pretreated waste water import and precipitation reaction product exit, pretreated waste water import are connected with oxidative degradation device 20；Settler
30 further include coagulation unit 33, and coagulation unit 33 is provided with coagulation water inlet and supernatant outlet, and coagulation water inlet and precipitating are anti-
Product exit is answered to be connected, and supernatant outlet is connected with vaporising device 40.It can be by precipitation reaction product using coagulation unit 33
It exports in the reaction system of discharge and flocks together to form the biggish precipitating of partial size in the precipitating of small particle, to separate.
Other than the heavy metal ion precipitating that reaction generates, originally there is likely to be a small amount of heavy metal particle in waste water, utilization is above-mentioned
This some particles can be flocculated out by coagulation unit 33.
In order to further increase the effect of coagulating sedimentation, while processing cost is reduced as far as possible, in a kind of preferred embodiment party
In formula, coagulation unit 33 also sets up coagulant import, and settler 30 further includes aluminium polychloride supply unit 34 and polypropylene
Amide supply unit 35, aluminium polychloride supply unit 34 are used to supply aluminium polychloride to coagulation unit 33；Polyacrylamide
Supply unit 35 is used to supply polyacrylamide to coagulation unit 33.
In a preferred embodiment, processing unit is additionally provided with absorption except golden clothes set 70, and absorption sets 70 except golden clothes
It is arranged on the pipeline being connected between supernatant outlet and vaporising device 40.After coagulating sedimentation, in obtained supernatant
The suspended matters such as a small amount of gold ion and SS can also be remained, using absorption except golden clothes set 70 can by the remaining gold ion in this part and
Suspended matter Adsorption.
In a preferred embodiment, it includes adsorption tower and the object that is arranged in inside adsorption tower that absorption, which sets 70 except golden clothes,
Adsorbent layer is managed, adsorption tower is provided with tower entrance and out tower mouth, and tower entrance is connected with supernatant outlet, out tower mouth and vaporising device
40 are connected.Supernatant is discharged after tower entrance entrance, by the absorption of physical absorption oxidant layer except gold, then from tower mouth out.
In a preferred embodiment, coagulation unit 33 is additionally provided with sludge outlet, and processing unit further includes filters pressing
Device 80, filter-pressing device 80 are provided with sludge import, pressing filtering liquid outlet and sludge outlet, sludge import and are connected with sludge outlet,
Pressing filtering liquid outlet is connected so that the pressing filtering liquid of pressing filtering liquid outlet discharge is back to pH regulating device 10 with pH regulating device 10.In this way
The alkaline pressing filtering liquid carried in sludge can be recycled, processing cost is on the one hand reduced, on the one hand realizes the purpose of zero-emission.
In a preferred embodiment, vaporising device 40 is multi-effect evaporator, MVR evaporator or MVC evaporator.This
Several evaporator evaporation efficiencies with higher, wherein multi-effect evaporator can be low-temperature multi-effect evaporator or high temperature multi-effect evaporation
Device.In actual process, in order to more effectively utilize energy, the preferably part of heat energy of evaporator uses industrial exhaust heat.
In order to mitigate the operating pressure of vaporising device 40, energy saving, it is preferable that as shown in Figure 1, above-mentioned apparatus further includes
Ultrafiltration apparatus 90 and reverse osmosis unit 100, ultrafiltration apparatus 90, which is arranged in series in, to be adsorbed except golden clothes are set between 70 and vaporising device 40,
Reverse osmosis unit 100 is arranged in series between ultrafiltration apparatus 90 and vaporising device 40.
According to another aspect of the present invention, a kind of processing method of saliferous organic matter acid metal waste water is additionally provided,
The following steps are included: step S1, adjusts the pH value of saliferous organic matter acid metal waste water to alkalinity, obtains alkaline waste water；Step
S2 is removed the COD in alkaline waste water in the way of oxidative degradation, obtains pretreated waste water；Step S3, will be in pretreated waste water
Heavy metal ion carry out precipitation reaction with heavy-metal ion removal, obtain secondary treatment waste water；Step S4 is useless to secondary treatment
Water is evaporated crystallization to remove salinity therein, is purified water.
In the processing method of saliferous organic matter acid metal waste water provided by the invention, saliferous organic matter acid metal is adjusted
The pH value of waste water to alkalinity can obtain alkaline waste water, under alkaline state, can be effectively removed in the way of oxidative degradation
COD in alkaline waste water, obtains pretreated waste water.Then, using precipitation reaction can by the heavy metal in pretreated waste water from
Son obtains secondary treatment waste water with the form removing precipitated.Finally, it is useless to remove secondary treatment in the way of evaporative crystallization
Salinity in water, is purified water.Saliferous organic matter acid metal waste water, entire technique are handled using method provided by the invention
Process is simple, equipment manufacturing cost is low, occupied area is small.Meanwhile low energy consumption for wastewater treatment of the invention, treated, and water is distillation
Water, quality are high, and processing cost is low, and have good ecological effect.
In order to further increase the oxidative degradation effect of COD, in a preferred embodiment, in step S1, will contain
The pH value of salt organic matter acid metal waste water is adjusted to 9~10, obtains alkaline waste water.The pH adjusting agent used in preferred steps S1
For sodium hydroxide and/or potassium hydroxide.The acid ingredient in waste water can be more effectively neutralized using these pH adjusting agents, and is located
In it is not introducing impurity currently, it is more preferable using sodium hydroxide as pH adjusting agent.
In a preferred embodiment, in step S2, degradation reagent is added into alkaline waste water to carry out oxidation drop
Solution preocess, to remove the COD in alkaline waste water, degradation reagent is hypochlorite, hydrogen peroxide, K2FeO4, potassium permanganate, high chlorine
One of acid and hypochlorous acid are a variety of.COD that can more effectively in oxidative degradation waste water using hypochlorite, reduces it and contains
Amount.It is preferred that hypochlorite is sodium hypochlorite and/or postassium hypochlorite.And in order not to introduce impurity, more preferably made using sodium hypochlorite
For reagent of degrading.
For the COD that more fully degrades, while reagent waste is reduced, in a preferred embodiment, reagent of degrading
Additional amount be alkaline waste water volume 1kg/m3~5kg/m3, the reaction time of Oxidative Degradation Process is 30~50min.
The purpose of above-mentioned precipitation reaction is to convert the heavy metal ion in pretreated waste water to precipitating removal.In one kind
In preferred embodiment, in step S3, precipitating reagent is added into pretreated waste water to carry out precipitation reaction, precipitating reagent is alkali gold
Belong to hydroxide.These precipitating reagents have good sedimentation effect for heavy metal ion.It is preferred that precipitating reagent be sodium hydroxide and/
Or potassium hydroxide.And in order not to introduce impurity, more preferably using sodium hydroxide as precipitating reagent.
In order to further increase the effect of precipitation reaction, in a preferred embodiment, add into pretreated waste water
In the step of entering precipitating reagent, the pH value of pretreated waste water is adjusted to 11.5~12 to carry out precipitation reaction using precipitating reagent.?
Precipitation reaction is carried out under the conditions of above-mentioned pH, is more advantageous to the positive of reaction and is carried out, improves the removal degree of heavy metal ion.
After precipitation reaction, heavy metal ion can be converted into precipitating.In a preferred embodiment, it is carrying out
After the process of precipitation reaction, step S3 further includes carrying out coagulating sedimentation to the reaction system obtained after precipitation reaction to obtain two
The step of secondary processing waste water.The precipitating in reaction system in small particle can be flocked together to form partial size using coagulating sedimentation
Biggish precipitating, to separate.Other than the heavy metal ion precipitating that reaction generates, there is likely to be few originally in waste water
This some particles can be flocculated out by the heavy metal particle of amount using above-mentioned coagulating sedimentation step.
In order to further increase the effect of coagulating sedimentation, while processing cost is reduced as far as possible, in a kind of preferred embodiment party
In formula, the coagulant used in precipitation process of coagulation is aluminium polychloride and polyacrylamide, the addition of preferred polymeric aluminium chloride
Amount is the 40g/m of reaction system volume3~100g/m3, the additional amount of polyacrylamide is the 2g/m of reaction system volume3~6g/
m3.It is added it is highly preferred that aluminium polychloride and polyacrylamide are respectively configured to corresponding solution, is more advantageous to precipitating point
From.
In a preferred embodiment, supernatant and sludge are generated in the step of coagulating sedimentation, in coagulating sedimentation
After step, step S3 further includes the steps that carrying out supernatant absorption except gold is to obtain secondary treatment waste water.It is heavy by coagulation
After the step of shallow lake, the suspended matters such as a small amount of gold ion and some SS can be also remained in obtained supernatant, using absorption except gold step
It suddenly can be by the remaining gold ion in this part and suspended matter Adsorption.Preferably, absorption is except the adsorbent used in golden step
For physical absorbent, more preferable physical absorbent is the one or more of active carbon and/or hydrotalcite.
In a preferred embodiment, processing method further includes the steps that post-processing sludge, post-processing
Step includes: to carry out filters pressing to sludge, obtains pressing filtering liquid and filter residue；Pressing filtering liquid, which is back in step S1, to be used to adjust saliferous has
The pH value of machine matter acid metal waste water.By filters pressing step, the pressing filtering liquid of the partial alkaline carried in sludge can return to neutralization
Step utilizes herein, to reduce processing cost, realizes zero-emission.
In a preferred embodiment, in step S4, the evaporator used in evaporation and crystal process is multiple-effect evaporation
Device, MVR evaporator or MVC evaporator.These types of evaporator evaporation efficiency with higher, wherein multi-effect evaporator can be low
Warm multi-effect evaporator or high temperature multi-effect evaporator.In actual process, in order to more effectively utilize energy, preferably evaporator
Part of heat energy use industrial exhaust heat.
Beneficial effects of the present invention are further illustrated by the following examples:
Embodiment 1
It is derived from the acid heavy metal wastewater with high salt of certain coloured smelting factory, waste component and concentration value are shown in Table 1, using the present invention
Technology is handled.
The main pollutant component concentration (mg/l) of 1 waste water of table
| Element | HCl | NaCl | COD | Cu | Fe | Oxalic acid | Au |
| Content | 14445 | 11112 | 350 | 138 | 12 | 13.8 | 0.04 |
Acid heavy metal wastewater with high salt enters conditioning tank, is used for regulating water quality and water.Step 1,1m3Waste water connects first
Continuous uniformly pump is to a neutralization chamber, and the NaOH solution that mass concentration is 20% is added in continuous uniform, reacts 20min, and pH is adjusted to
9.Step 2, solution overflow to COD oxidation trough react 40min using 2kgNaClO dry powder oxidative degradation waste water COD, and COD is gone
Except rate is 89%.The pH of waste water is adjusted to 11.5 using sodium hydroxide solution, added in efficient mechanical clarifying basin by step 3
The PAM solution 400ml that the PAC solution 500ml and mass concentration that mass concentration is 10% are 0.5% carries out coagulating sedimentation, supernatant
Liquid enters intermediate pool (requirement for having reached leaded Zn Cr coating pollutant emission standard GB25466-2010), and underflow is stored in
Sludge-tank, with sludge pumping to filter press filters pressing；Supernatant liquid pump to activated carbon adsorber group absorption is removed gold with pump by step 4,
Gold ion removal rate is 99.95%, is discharged after ultrafiltration apparatus and reverse osmosis unit, and concentrated water stores flow container before the evaporation, light
Water reuse；Step 5, evaporation feed pump will evaporate preceding liquid pump to evaporator evaporative crystallization, steam condensate (SC) reuse, residue conduct
Waste residue disposition.
Embodiment 2
The difference is that, after NaOH solution reaction is added in step 1, the pH of system has been adjusted to 10 with embodiment.
The removal rate of COD is 92% in step 2 oxidative degradation step.
Embodiment 3
The difference is that, after NaOH solution reaction is added in step 1, the pH of system has been adjusted to 11 with embodiment.
The removal rate of COD is 90% in step 2 oxidative degradation step.
Embodiment 4
The difference is that, after NaOH solution reaction is added in step 1, the pH of system is adjusted to embodiment
8.5.The removal rate of COD is 82% in step 2 oxidative degradation step.
Embodiment 5
The difference is that, the NaClO being added in step 2 is replaced with into potassium permanganate, in the step with embodiment
The removal rate of COD is 84%.
Embodiment 6
The difference is that, the NaClO being added in step 2 is replaced with into K with embodiment2FeO4, COD in the step
Removal rate is 82%.
Embodiment 7
The difference is that, the NaClO being added in step 2 is replaced with into hydrogen peroxide, COD in the step with embodiment
Removal rate be 83%.
Embodiment 8
The difference is that, the NaClO being added in step 2 is replaced with into perchloric acid, COD in the step with embodiment
Removal rate be 85%.
Embodiment 9
The difference is that, the amount for the NaClO being added in step 2 is replaced with into 1kg, COD in the step with embodiment
Removal rate be 84%.
Embodiment 10
The difference is that, the amount for the NaClO being added in step 2 is replaced with into 5kg, COD in the step with embodiment
Removal rate be 92%.
Embodiment 11
The difference is that, the amount for the NaClO being added in step 2 is replaced with into 7kg, COD in the step with embodiment
Removal rate be 93%.
Embodiment 12
The difference is that, the pH of waste water is adjusted to 12 using sodium hydroxide solution in step 3 with embodiment, on
Clear liquid has reached the requirement of leaded Zn Cr coating pollutant emission standard GB25466-2010.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: the present invention mentions
In the processing method of the saliferous organic matter acid metal waste water of confession, the pH value of saliferous organic matter acid metal waste water is adjusted to alkalinity
Alkaline waste water can be obtained, under alkaline state, the COD in alkaline waste water can be effectively removed in the way of oxidative degradation,
Obtain pretreated waste water.Then, it is taken off using the form that precipitation reaction can precipitate the heavy metal ion in pretreated waste water
It removes, obtains secondary treatment waste water.Finally, the salinity in secondary treatment waste water can be removed in the way of evaporative crystallization, obtain
Purified water.Saliferous organic matter acid metal waste water is handled using method provided by the invention, entire process flow is simple, equipment is made
Valence is low, occupied area is small.Meanwhile low energy consumption for wastewater treatment of the invention, treated, and water is distilled water, quality height, handling
With low, and there is good ecological effect.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of processing unit of saliferous organic matter acid metal waste water characterized by comprising
PH regulating device (10), the pH value for adjusting the saliferous organic matter acid metal waste water are useless to obtain alkalinity to alkalinity
Water；
Oxidative degradation device (20) is connected with the pH regulating device (10), for removing the COD in the alkaline waste water to obtain
To pretreated waste water；
Settler (30) is connected with the oxidative degradation device (20), useless for removing the pretreatment using precipitation reaction
Heavy metal ion in water is to obtain secondary treatment waste water；And
Vaporising device (40) is connected with the settler (30), for the secondary treatment waste water be evaporated crystallization with
It removes salinity therein and is purified water.
2. processing unit according to claim 1, which is characterized in that the processing unit further includes pH adjusting agent supply dress
It sets (50), the pH adjusting agent feeding mechanism (50) is connected with the pH regulating device (10), is used for the pH regulating device
(10) supply sodium hydroxide and/or the one or more of potassium hydroxide are used as pH adjusting agent in.
3. processing unit according to claim 1, which is characterized in that the processing unit further includes degradation agent delivery dress
It sets (60), the degradation agent delivery device (60) is connected with the oxidative degradation device (20), is used for the oxidative degradation
Hypochlorite, hydrogen peroxide, K are supplied in device (20)2FeO4, potassium permanganate, one of perchloric acid and hypochlorous acid or a variety of conducts
Degradation reagent.
4. processing unit according to any one of claim 1 to 3, which is characterized in that the settler (30) includes:
Precipitation unit (31) is connected with the oxidative degradation device (20) and the vaporising device (40) respectively, and the precipitating is single
First (31) are used to remove the heavy metal ion in the pretreated waste water using precipitation reaction to obtain the secondary treatment waste water；
Precipitating reagent feeding mechanism (32) is connected with the precipitation unit (32), heavy for supplying into the precipitation unit (32)
Shallow lake agent.
5. processing unit according to claim 4, which is characterized in that the precipitation unit (31) is provided with pretreated waste water
Import and precipitation reaction product exit, the pretreated waste water import are connected with the oxidative degradation device (20)；The precipitating
Device (30) further includes coagulation unit (33), and the coagulation unit (33) is provided with coagulation water inlet and supernatant outlet, described
Coagulation water inlet is connected with the precipitation reaction product exit, and the supernatant outlet is connected with the vaporising device (40).
6. processing unit according to claim 5, which is characterized in that the coagulation unit (33) also set up coagulant into
Mouthful, the settler (30) further include:
Aluminium polychloride supply unit (34), for supplying aluminium polychloride to the coagulation unit (33)；
Polyacrylamide supply unit (35), for supplying polyacrylamide to the coagulation unit (33).
7. processing unit according to claim 5, which is characterized in that the processing unit is additionally provided with absorption except golden clothes are set
(70), the absorption removes golden clothes and sets the pipeline that (70) setting is connected between the supernatant outlet and the vaporising device (40)
On.
8. processing unit according to claim 7, which is characterized in that it is described absorption except golden clothes set (70) include adsorption tower and
Physical absorption oxidant layer inside the adsorption tower is set, and the adsorption tower is provided with tower entrance and out tower mouth, the tower entrance
It is connected with the supernatant outlet, the tower mouth out is connected with the vaporising device (40).
9. processing unit according to claim 5, which is characterized in that the coagulation unit (33) is additionally provided with sludge and goes out
Mouthful, the processing unit further includes filter-pressing device (80), the filter-pressing device (80) be provided with sludge import, pressing filtering liquid outlet and
Sludge outlet, the sludge import are connected with the sludge outlet, the pressing filtering liquid outlet and pH regulating device (10) phase
Even the pressing filtering liquid of pressing filtering liquid outlet discharge is back to the pH regulating device (10).
10. processing unit according to any one of claim 1 to 3, which is characterized in that the vaporising device (40) is more
Imitate evaporator, MVR evaporator or MVC evaporator.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254141A (en) * | 2015-11-24 | 2016-01-20 | 广东先导稀材股份有限公司 | Treatment method and treatment system for high-concentration mixed salt organic wastewater |
| CN106495355A (en) * | 2015-09-03 | 2017-03-15 | 上虞华杰环保有限公司 | A kind of electroplating wastewater treatment reclaiming technique and combinations thereof device |
| CN107459173A (en) * | 2017-09-12 | 2017-12-12 | 广东省博罗县湘澧精细化工有限公司 | The PH callback processing systems and its method of work of a kind of acid-base property contaminant water |
| CN108002580A (en) * | 2017-09-22 | 2018-05-08 | 中冶长天国际工程有限责任公司 | A kind of acidic flue gas treatment of waste water from washing and application thereof |
| CN209522715U (en) * | 2018-11-27 | 2019-10-22 | 中国恩菲工程技术有限公司 | The processing unit of saliferous organic matter acid metal waste water |
-
2018
- 2018-11-27 CN CN201811428485.9A patent/CN109502863A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495355A (en) * | 2015-09-03 | 2017-03-15 | 上虞华杰环保有限公司 | A kind of electroplating wastewater treatment reclaiming technique and combinations thereof device |
| CN105254141A (en) * | 2015-11-24 | 2016-01-20 | 广东先导稀材股份有限公司 | Treatment method and treatment system for high-concentration mixed salt organic wastewater |
| CN107459173A (en) * | 2017-09-12 | 2017-12-12 | 广东省博罗县湘澧精细化工有限公司 | The PH callback processing systems and its method of work of a kind of acid-base property contaminant water |
| CN108002580A (en) * | 2017-09-22 | 2018-05-08 | 中冶长天国际工程有限责任公司 | A kind of acidic flue gas treatment of waste water from washing and application thereof |
| CN209522715U (en) * | 2018-11-27 | 2019-10-22 | 中国恩菲工程技术有限公司 | The processing unit of saliferous organic matter acid metal waste water |
Non-Patent Citations (1)
| Title |
|---|
| （苏）列别杰夫: "有色冶金企业废水净化与监测", 冶金工业出版社, pages: 323 - 324 * |
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