CN108164036A - A kind of heavy metal waste water treatment process - Google Patents
A kind of heavy metal waste water treatment process Download PDFInfo
- Publication number
- CN108164036A CN108164036A CN201711481527.0A CN201711481527A CN108164036A CN 108164036 A CN108164036 A CN 108164036A CN 201711481527 A CN201711481527 A CN 201711481527A CN 108164036 A CN108164036 A CN 108164036A
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- water
- waste water
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- pond
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
-
- 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
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a kind of heavy metal waste water treatment process, process flows into cistern for waste water by water meter one, and waste water direct current enters oil removal regulating reservoir in cistern, after oil removal regulating reservoir pulls oil slick out and addition air is stirred, waste water squeezes into reaction tank one by water pump, by Ca（OH）2That is white lime, PAC, waste water in PAM input reaction tanks one, the pH value of waste water is controlled 8.5 ~ 9.0 by chemically reacting after adding in air stirring, chemical reaction generation precipitation, waste water squeezes into primary sedimentation tank and carries out mud-water separation, upper supernatant liquid after wastewater sedimentation squeezes into reaction tank two by water pump, water in reaction tank two adds in NaOH, that is, caustic soda, PAC, PAM, the pH value of water is controlled 7.5 ~ 8.0 after adding in air stirring, water in reaction tank two generates precipitation after chemical reaction, mud-water separation is carried out again into secondary settling tank, the floating clear water of secondary settling tank is directly squeezed by water pump with pond, compensate for the deficiencies in the prior art, reasonable design.
Description
Technical field
The present invention relates to waste water treatment process, especially a kind of heavy metal waste water treatment process.
Background technology
In the non-ferrous metals processing of copper alloy wire, production process needs to carry out pickling to product（Acid is invaded and scavenger
Skill）, therefore discharge a certain amount of acid in process and invade waste liquid and pickling flush waste water, which severely exceeds except pH value
Outside, zinc ion, copper ion concentration are all higher, these acid waste waters will cause serious environment if do not handled to be directly discharged into river
Therefore pollution, to solve the waste water of this type, needs a kind of to reduce pH value and zinc ion, the heavy metal of copper ion concentration
Waste water treatment process to reach environmental protection, promotes the effect of Sustainable Development of Enterprises.
Invention content
The technical problems to be solved by the invention are to provide a kind of heavy metal waste water treatment process.
To solve above-mentioned existing technical problem, the present invention uses following scheme：A kind of heavy metal waste water treatment process is fitted
Equipment include with pond, cistern, water meter one, filter press, oil removal regulating reservoir, reaction tank one, primary sedimentation tank, reaction tank two,
Sludge-tank, secondary settling tank, dry mud stockyard, dry anti-corrosion water pump, which is characterized in that a kind of process of heavy metal waste water treatment process
For with the clear water in pond, for becoming the waste water containing copper and zinc heavy metal ion after generation processing, waste water is flowed by water meter one
Cistern, waste water direct current enters oil removal regulating reservoir in cistern, pulls oil slick out in oil removal regulating reservoir and adds in after air is stirred,
Waste water squeezes into reaction tank one by water pump, by Ca（OH）2That is white lime, the waste water in PAC, PAM input reaction tank one, add in empty
By chemically reacting the control of the pH value of waste water 8.5 ~ 9.0 after gas agitating, chemical reaction generation precipitation, waste water squeezes into primary sedimentation tank
Mud-water separation is carried out, the upper supernatant liquid after wastewater sedimentation squeezes into reaction tank two by water pump, and the water in reaction tank two adds in NaOH and is
Caustic soda, PAC, PAM are added in after air stirring the pH value of water being controlled water in 7.5 ~ 8.0, reaction tank two after chemical reaction
Generation precipitation carries out mud-water separation again into secondary settling tank, and the floating clear water of secondary settling tank is directly squeezed by water pump with pond, use
Clear water enters factory for processing by water meter two in pond, and primary sedimentation tank and secondary settling tank gravity flow flow into sludge-tank and concentrated,
Sludge to be squeezed into filter press by screw pump again, drying and other treatment is carried out by filter press, the press filtration water of gained squeezes into oil removal regulating reservoir,
The dewatered sludge of gained is placed in dry mud stockyard and periodically disposes.
Preferably, the oil removal regulating reservoir is underground type Reinforced Concrete Structure, inside upstream face is equipped with no less than layer glass
Steel resin, it is interior to be furnished with aeration agitation system.
Preferably, the reaction tank one and reaction tank two are ground type Reinforced Concrete Structure, inside upstream face is equipped with no less than
Layer glass steel resin, it is interior equipped with medicine system, aeration agitation system, PH testers.
Preferably, the primary sedimentation tank and secondary settling tank are ground type Reinforced Concrete Structure, it is interior equipped with receipts water system, sludge drainage system.
Preferably, the sludge-tank is underground type Reinforced Concrete Structure, interior equipped with screw pump, side is furnished with plate and frame filter press.
With pond it is brick mix structure preferably, described, inside upstream face has the covering of anti-rot plastic film.
Advantageous effect：Present invention employs above-mentioned technical proposals to provide a kind of heavy metal waste water treatment process, compensates for existing
There is the deficiency of technology, reasonable design is easy to operate.
Description of the drawings
Fig. 1 is present invention process flow chart.
Specific embodiment
As shown in Figure 1, a kind of heavy metal waste water treatment process, applicable equipment include with pond, cistern, water meter one,
Filter press, oil removal regulating reservoir, reaction tank one, primary sedimentation tank, reaction tank two, sludge-tank, secondary settling tank, dry mud stockyard, dry anti-corrosion water pump,
It is characterized in that, a kind of process of heavy metal waste water treatment process is to become to contain after being processed for generation with the clear water in pond
There are copper and the waste water of zinc heavy metal ion, waste water flows into cistern by water meter one, and waste water direct current enters oil removal adjusting in cistern
Pond, after oil removal regulating reservoir pulls oil slick out and addition air is stirred, waste water squeezes into reaction tank one by water pump, by Ca
（OH）2That is white lime, the waste water in PAC, PAM input reaction tank one, add in waste water after air stirring through chemical reaction
PH value control is 8.5 ~ 9.0, chemical reaction generation precipitation, and waste water squeezes into primary sedimentation tank and carries out mud-water separation, upper after wastewater sedimentation
Supernatant liquid squeezes into reaction tank two by water pump, and the water in reaction tank two adds in NaOH, that is, caustic soda, PAC, PAM, after adding in air stirring
The water in 7.5 ~ 8.0, reaction tank two is controlled to generate precipitation after chemical reaction the pH value of water, carried out again into secondary settling tank
Mud-water separation, the floating clear water of secondary settling tank are directly squeezed by water pump with pond, enter work by water meter two with clear water in pond
Station-service is in processing, and primary sedimentation tank and secondary settling tank gravity flow flow into sludge-tank and concentrated, then sludge is squeezed into filter press by screw pump,
Drying and other treatment is carried out by filter press, the press filtration water of gained squeezes into oil removal regulating reservoir, and the dewatered sludge of gained, which is placed in dry mud stockyard, to be determined
Phase is disposed, and the oil removal regulating reservoir is underground type Reinforced Concrete Structure, and inside upstream face is equipped with no less than layer glass steel resin, inside matches
There is aeration agitation system, the reaction tank one and reaction tank two are ground type Reinforced Concrete Structure, and inside upstream face is equipped with no less than two
Layer fiber glass resin, interior equipped with medicine system, aeration agitation system, PH testers, the primary sedimentation tank and secondary settling tank are ground type
Reinforced Concrete Structure, interior equipped with water system, sludge drainage system is received, the sludge-tank is underground type Reinforced Concrete Structure, interior equipped with screw pump, side
Equipped with plate and frame filter press, described with pond is brick mix structure, and inside upstream face has the covering of anti-rot plastic film.
The present invention according to zinc ion in waste water, copper ion concentration is higher the characteristics of, using two-stage materialization coagulant sedimentation, into
After chemical precipitation twice, i.e., by the use of chemical substance as precipitating reagent, with Pollutants in Wastewater（Heavy Metals ion）Income
Reaction is learned, the species precipitate that generation is insoluble in water is precipitated, is detached from waste water, such as Ca（OH）2That is white lime and Cu in waste water2+Shape
It is precipitated into the hydroxide for being insoluble in water, reaction equation is as follows：
Cu2++Ca（OH）2=Cu（OH）2↓+Ca2+
Ca2++SO2— 4=CaSO4↓
For the higher waste water of zinc ion, copper ion concentration, the present invention uses Ca（OH）2With NaOH as precipitating reagent, reaction equation
It is as follows：
Cu2++2OH—=Cu（OH）2↓ ； Zn2++2OH—=Zn（OH）2↓
When reaching discharge standard concentration limit in the presence of metal ion is single, theoretical pH value is calculated according to solubility product, resulting value is such as
Under：
Cu2+≤ 0.5mg/1, pH value=8.40； Zn2+≤ 2.0mg/1, pH value=8.68
Since general concrete can not play acid waste water protective action, oil removal regulating reservoir, reaction tank one, reaction
Two inside upstream face of pond is equipped with no less than layer glass steel resin, acid waste water is isolated.
The embodiment one of the present invention is operated for continuous dynamic type, i.e., waste water and outer adding medicine continuously enter reaction
In pond one and reaction tank two, waste water is controlled by anti-corrosion water pump, outer adding medicine, that is, Ca（OH）2, NaOH, PAC, PAM pass through dosing
System controls, and PH testers link with medicine system, and waste water and outer adding medicine is made to reach under manual or automatic automatically controlled control
Proportional balancing method, controlling reaction equalization point can continuously run later, and major advantage is that technological operation is continuously run, between operation not
Disconnected, secondary settling tank continuously goes out clear water, can realize unattended.
Embodiment two of the invention is sequence batch periodic operation, i.e. entering for waste water and outer adding medicine intermittent cyclical reacts
In pond one and reaction tank two, ratio is balanced under artificial control between waste water and outer adding medicine, and the first set reaction period completes
Entering next reaction time afterwards, be exactly one pot type of a tank in brief, major advantage is first between waste water and outer adding medicine
Entering next reaction time, quantitative control easy to implement after the completion of the secondary response period, reaction end easily determines, it is ensured that
Qualified discharge, and to labor claim bottom, it is easily mastered operating method.
In conclusion while the present invention uses two-stage materialization coagulant sedimentation, and it is equipped with automatic control system, it is ensured that it is useless
Water process, which is stablized, to be carried out, and the technique precipitated using two-stage reaction plus two-stage, technical process is reliable and stable, and the present invention is first for pollution
The characteristics of factor, first uses Ca（OH）2It neutralizes plus precipitates with NaOH, then with agent complex-precipitation is recaptured, ensure zinc ion, copper ion
It is up to standard, to reduce operating cost, reach environmental protection, promote the effect of Sustainable Development of Enterprises.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of heavy metal waste water treatment process, applicable equipment is included with pond, cistern, water meter one, filter press, oil removal tune
Save pond, reaction tank one, primary sedimentation tank, reaction tank two, sludge-tank, secondary settling tank, dry mud stockyard, several anti-corrosion water pumps, which is characterized in that
A kind of process of heavy metal waste water treatment process is to become after being processed with the clear water in pond for generation containing copper and zinc weight
The waste water of metal ion, waste water flow into cistern by water meter one, and waste water direct current enters oil removal regulating reservoir in cistern, in oil removal tune
Section pond is pulled oil slick out and is added in after air is stirred, and waste water squeezes into reaction tank one by water pump, by Ca（OH）2I.e. white lime,
Waste water in PAC, PAM input reaction tank one, add in after air stirring by chemically react by the control of the pH value of waste water 8.5 ~
9.0, chemical reaction generation precipitation, waste water squeezes into primary sedimentation tank and carries out mud-water separation, and the upper supernatant liquid after wastewater sedimentation is beaten by water pump
Enter reaction tank two, the water in reaction tank two adds in NaOH, that is, caustic soda, PAC, PAM, the pH value of water is controlled after adding in air stirring
Water in 7.5 ~ 8.0, reaction tank two generates precipitation after chemical reaction, carries out mud-water separation again into secondary settling tank, two is heavy
The floating clear water in pond is directly squeezed by water pump with pond, enters factory by water meter two for processing with clear water in pond, and
Primary sedimentation tank and secondary settling tank gravity flow flow into sludge-tank concentrated, then sludge is squeezed into filter press by screw pump, by filter press into
Row drying and other treatment, the press filtration water of gained squeeze into oil removal regulating reservoir, and the dewatered sludge of gained is placed in dry mud stockyard and periodically disposes.
2. a kind of heavy metal waste water treatment process according to claim 1, which is characterized in that the oil removal regulating reservoir is ground
Following formula Reinforced Concrete Structure, inside upstream face is equipped with no less than layer glass steel resin, interior to be furnished with aeration agitation system.
3. a kind of heavy metal waste water treatment process according to claim 1, which is characterized in that the reaction tank one and reaction
Pond two is ground type Reinforced Concrete Structure, and inside upstream face is equipped with no less than layer glass steel resin, interior to be stirred equipped with medicine system, aeration
Mix system, PH testers.
4. a kind of heavy metal waste water treatment process according to claim 1, which is characterized in that the primary sedimentation tank and secondary settling tank
It is interior equipped with receipts water system, sludge drainage system for ground type Reinforced Concrete Structure.
5. a kind of heavy metal waste water treatment process according to claim 1, which is characterized in that the sludge-tank is underground type
Reinforced Concrete Structure, interior equipped with screw pump, side is furnished with plate and frame filter press.
6. a kind of heavy metal waste water treatment process according to claim 1, which is characterized in that described with pond is that brick mixes knot
Structure, inside upstream face have the covering of anti-rot plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481527.0A CN108164036A (en) | 2017-12-29 | 2017-12-29 | A kind of heavy metal waste water treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481527.0A CN108164036A (en) | 2017-12-29 | 2017-12-29 | A kind of heavy metal waste water treatment process |
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| Publication Number | Publication Date |
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| CN108164036A true CN108164036A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711481527.0A Pending CN108164036A (en) | 2017-12-29 | 2017-12-29 | A kind of heavy metal waste water treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432878A (en) * | 2022-10-12 | 2022-12-06 | 中国矿业大学 | High-salinity mine water treatment device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201495143U (en) * | 2009-09-17 | 2010-06-02 | 上海东振环保工程技术有限公司 | Metal ion contained acidic waste water treatment system |
| CN101875518A (en) * | 2010-07-01 | 2010-11-03 | 陈启松 | Treatment method of stainless steel pickling waste water |
| CN204434393U (en) * | 2014-12-24 | 2015-07-01 | 浙江卓锦环保科技股份有限公司 | A kind of Waste Water Treatment |
| CN104909490A (en) * | 2015-05-19 | 2015-09-16 | 东风活塞轴瓦有限公司 | Phosphating and chemical nickel-plating mixed comprehensive wastewater treatment process and automated device |
-
2017
- 2017-12-29 CN CN201711481527.0A patent/CN108164036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201495143U (en) * | 2009-09-17 | 2010-06-02 | 上海东振环保工程技术有限公司 | Metal ion contained acidic waste water treatment system |
| CN101875518A (en) * | 2010-07-01 | 2010-11-03 | 陈启松 | Treatment method of stainless steel pickling waste water |
| CN204434393U (en) * | 2014-12-24 | 2015-07-01 | 浙江卓锦环保科技股份有限公司 | A kind of Waste Water Treatment |
| CN104909490A (en) * | 2015-05-19 | 2015-09-16 | 东风活塞轴瓦有限公司 | Phosphating and chemical nickel-plating mixed comprehensive wastewater treatment process and automated device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432878A (en) * | 2022-10-12 | 2022-12-06 | 中国矿业大学 | High-salinity mine water treatment device |
| CN115432878B (en) * | 2022-10-12 | 2023-07-25 | 中国矿业大学 | High salinity mine water treatment device |
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Application publication date: 20180615 |