CN109970278A - A kind of high-efficiency and economic removes the method and apparatus of antimony in dyeing waste water - Google Patents

A kind of high-efficiency and economic removes the method and apparatus of antimony in dyeing waste water Download PDF

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Publication number
CN109970278A
CN109970278A CN201910285382.XA CN201910285382A CN109970278A CN 109970278 A CN109970278 A CN 109970278A CN 201910285382 A CN201910285382 A CN 201910285382A CN 109970278 A CN109970278 A CN 109970278A
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waste water
antimony
pool
aerobic biochemical
tank
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CN109970278B (en
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史惠祥
李威
陈磊
蒋婷
方荣业
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281Installations for water purification using chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/30Nature of the water, waste water, sewage or sludge to be treated from the textile industry
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/04Flow arrangements
    • C02F2301/043Treatment of partial or bypass streams
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00Specific waste
    • F23G2209/12Sludge, slurries or mixtures of liquids

Abstract

The invention discloses the method and apparatus of antimony in a kind of high-efficiency and economic removal dyeing waste water, waste water enters reaction tank by conditioning tank, and the acid, white lime and anionic polyacrylamide sequentially added in reaction tank dissolved with ferrous sulfate carries out coagulating;Enter primary sedimentation tank after reaction, precipitating sludge carries out plate compression, and isolated waste water enters aerobic biochemical pool;Enter secondary settling tank, the sludge reflux isolated to biochemistry pool after biochemical treatment, waste water is passed through two sections of biochemistry pools;Enter final deposition pool after processing, the wastewater to reach standard isolated, which is received, pipe or is further processed reuse to workshop, carries out burning disposal after excess sludge plate compression.This method is easy to operate, and reagent cost is low, except antimony effect is obvious, the final antimony concentration of waste water, which can be stablized, is down to 100 μ g/L or less, and the aeration in aerobic sludge pond is made full use of, ferrous oxidising complexing and sedimentation function at ferric iron, between enhancing ferriferous oxide and stibate in waste water is promoted.

Description

A kind of high-efficiency and economic removes the method and apparatus of antimony in dyeing waste water
Technical field
The present invention relates to technical field of sewage, and in particular to a kind of method that high-efficiency and economic removes antimony in dyeing waste water And equipment.
Background technique
Antimony is a kind of typical poisonous and hazardous heavy metal element, studies have shown that antimony has chronic toxicity to biology and human body And carcinogenicity, priority pollutants scope is included in by Environmental Protection Agency (USEPA) and European Union (EU).With weaving, printing and dyeing The extensive use of the fast development of industry, antimony and its compound in the industry, the discharge and pollution problem of heavy metal antimony are increasingly tight Weight.It 2015, is required after " textile dyeing and finishing industrial water pollution object discharge standard " (GB 4287-2012) modification: total in enterprise wastewater Discharge outlet, the standard direct emission of total antimony and indirect emission limit are 100 μ gL-1
Coagulant sedimentation is to handle the most commonly used one of the technique of stibium-containing wastewater, and be directed to the antimony pollution of dyeing waste water at present Problem is often the ferriferous oxide or iron hydroxide that hydrolyze to form except antimony coagulant with molysite such as bodied ferric sulfate, ferrous sulfate Object can effectively be complexed with stibate, to realize the separation of solid and liquid of antimony pollution.Wherein, bodied ferric sulfate coagulation except antimony it is high-efficient, But this method need to adjust pH repeatedly, and reagent cost is higher, and cost performance is low;And ferrous sulfate is cheap, but treatment effeciency compared with It is low, need larger dosage to be just able to achieve qualified discharge.
Summary of the invention
The purpose of the present invention is combining the existing treatment facility of enterprise, antimony in a kind of high-efficiency and economic removal dyeing waste water is provided Method and apparatus, treatment effeciency is high, and reagent cost is low.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of method that high-efficiency and economic removes antimony in dyeing waste water, includes the following steps:
(1) dyeing waste water containing antimony enters reaction tank by conditioning tank, first added in reaction tank dissolved with ferrous sulfate acid or Then person adds white lime and anionic polyacrylamide dissolved with the acid of ferrous sulfate and potassium permanganate, carry out coagulating;
(2) waste water after reacting enters primary sedimentation tank from reaction tank, and the waste water of primary sedimentation tank separation enters aerobic biochemical pool, just heavy Precipitating sludge in pond burns after carrying out plate compression;
(3) waste water after biochemical treatment enters secondary settling tank from aerobic biochemical pool, and the waste water that secondary settling tank is isolated is passed through two sections Aerobic biochemical pool, secondary settling tank inner part sludge reflux to aerobic biochemical pool, excess sludge is burnt after carrying out plate compression in secondary settling tank It burns;
(4) waste water after two sections of biochemical treatments enters final deposition pool from two sections of aerobic biochemical pools, and final deposition pool is isolated useless Water is the waste water (up to standard receive pipe or be further processed reuse to workshop) for completing removal antimony, final deposition pool inner part sludge reflux to two Section aerobic biochemical pool, excess sludge burns after carrying out plate compression in final deposition pool.
It is used as the preferred technical solution of the present invention below:
In step (1), in the acid dissolved with ferrous sulfate, the acid is hydrochloric acid, the throwing of the ferrous sulfate Dosage is 150~200 times (further preferably 180~200 times) of antimony mass concentration in dyeing waste water containing antimony, the sulfuric acid Ferrous dosage is 300ppm~700ppm (further preferably 550ppm~600ppm), i.e., dissolved in the acid of ferrous sulfate Ferrous sulfate quality and the quality of dyeing waste water containing antimony part per million be 300ppm~700ppm (further preferably 550ppm ~600ppm), described dissolved in the acid of ferrous sulfate and potassium permanganate, the acid is hydrochloric acid, the ferrous sulfate Dosage is 50~90 times (further preferably 60~80 times) of antimony mass concentration in dyeing waste water containing antimony, and the sulfuric acid is sub- The dosage of iron is 150ppm~250ppm (further preferably 160ppm~200ppm), i.e., dissolved with ferrous sulfate and permanganic acid The part per million of ferrous sulfate quality and the quality of dyeing waste water containing antimony in the acid of potassium is 150ppm~250ppm (further preferred For 160ppm~200ppm), the dosage of the potassium permanganate is 0.5~0.6 times of the dosage of ferrous sulfate, described The dosage of potassium permanganate is 75ppm~150ppm (further preferably 80ppm~120ppm), i.e., dissolved with ferrous sulfate and height The part per million of ferrous sulfate quality and the quality of dyeing waste water containing antimony in the acid of potassium manganate is 75ppm~150ppm (further Preferably 80ppm~120ppm), it is better that the lower concentration of the acid dissolved with ferrous sulfate and potassium permanganate can generate Removal antimony effect.
The dosage of the white lime is 30ppm~100ppm (further preferably 50ppm~80ppm), i.e., ripe stone The quality part per million that ash accounts for the dyeing waste water containing antimony is 30ppm~100ppm (further preferably 50ppm~80ppm), described Anionic polyacrylamide dosage be 1ppm~10ppm (further preferably 2ppm~3ppm), anion pp The quality part per million of amide and the dyeing waste water containing antimony is 1ppm~10ppm (further preferably 2ppm~3ppm).
The coagulating specifically: 100~300r/min is quickly stirred reaction 1min~10min, further It is preferred that 150~250r/min is quickly stirred reaction 1min~5min, most preferably, 200r/min is quickly stirred instead Answer 2min.
In step (2), it is 7~8 that primary sedimentation tank, which is discharged pH value,.
In step (2), the hydraulic detention time of the aerobic biochemical pool is 4.5~7h, in the aerobic biochemical pool Dissolved oxygen concentration be 2.0~5.5mg/L.Further preferably, the hydraulic detention time of the aerobic biochemical pool be 4.5~ 5h, the dissolved oxygen concentration in the aerobic biochemical pool are 3.0~4.0mg/L.
In step (3), the hydraulic detention time of two sections of aerobic biochemical pools is 4.5~7h, and described two sections aerobic Dissolved oxygen concentration in biochemistry pool is 2.0~5.5mg/L.Further preferably, the hydraulic retention of two sections of aerobic biochemical pools Time is 6~7h, and the dissolved oxygen concentration in two sections of aerobic biochemical pools is 2.5~3.8mg/L.
A kind of equipment that high-efficiency and economic removes antimony in dyeing waste water, comprising:
Receive the conditioning tank of the dyeing waste water containing antimony;
The reaction tank being connect with the conditioning tank;
The primary sedimentation tank being connect with the reaction tank;
The aerobic biochemical pool being connect with the primary sedimentation tank;
The secondary settling tank being connect with the aerobic biochemical pool;
Two sections of aerobic biochemical pools being connect with the secondary settling tank;
The final deposition pool being connect with two sections of aerobic biochemical pools;
The waste water of the primary sedimentation tank separation enters aerobic biochemical pool, and the precipitating sludge in the primary sedimentation tank carries out sheet frame It is burned after filters pressing;
The waste water that the secondary settling tank is isolated is passed through two sections of aerobic biochemical pools, and secondary settling tank inner part sludge reflux is to aerobic Biochemistry pool, excess sludge burns after carrying out plate compression in secondary settling tank;
The waste water that the final deposition pool is isolated is the waste water for completing removal antimony, the final deposition pool inner part sludge reflux To two sections of aerobic biochemical pools, excess sludge burns after carrying out plate compression in the final deposition pool.
Compared with prior art, the present invention has the advantage that
1. white lime is added in the present invention, increase calcium ion concentration, to enhance ferrous sulfate coagulation except antimony effect, and effectively Using aerobic tank aeration oxygen replenishing, realizes that lower throwing amount ferrous sulfate efficiently removes antimony, reduce reagent cost.
2. this method is easy to operate, reagent cost is low, and except antimony effect is obvious, the final antimony concentration of waste water, which can be stablized, is down to 100 μ G/L hereinafter, and make full use of the aeration in aerobic sludge pond, promote ferrous oxidising at ferric iron in waste water, enhance iron oxidation Complexing and sedimentation function between object and stibate.
3. technique, equipment applied by this method are the technique of printing and dyeing enterprise or sewage treatment plant's routine, device, lead to Crossing can be realized medicament change, convenient for the popularization and application of this method.
Detailed description of the invention
Fig. 1 is the schematic diagram that high-efficiency and economic of the present invention removes the method for antimony in dyeing waste water.
Specific embodiment
The present invention is further illustrated with reference to embodiments.
Embodiment one: in the present embodiment, a kind of method that high-efficiency and economic removes antimony in dyeing waste water will be with certain printing and dyeing enterprise Dyeing waste water handled by the technique of Fig. 1, in dyeing waste water containing antimony antimony concentration be 3330.6 μ g/L, include the following steps:
(1) dyeing waste water containing antimony enters reaction tank by conditioning tank, and the hydrochloric acid dissolved with ferrous sulfate is first added in reaction tank, Ferrous sulfate dosage is 180.1 times (i.e. 600ppm) of antimony mass concentration in dyeing waste water containing antimony, i.e., dissolved with ferrous sulfate The mass ratio of ferrous sulfate in hydrochloric acid and the dyeing waste water containing antimony is 600ppm, then adds white lime and anionic polyacrylamide (PAM, Henan Hai Yun Environmental Protection Technology Co., Ltd), dosage are respectively 60ppm and 2ppm, i.e., white lime quality is accounted for prints and dyes containing antimony The part per million of waste water is 60ppm, and the part per million of anionic polyacrylamide and the dyeing waste water containing antimony is 2ppm, 200r/min Quickly it is stirred reaction 2min;
(2) waste water after reacting enters primary sedimentation tank from reaction tank, and the water outlet pH of primary sedimentation tank is 7.3, and antimony concentration is 282.0 μ The waste water of g/L, primary sedimentation tank separation enter aerobic biochemical pool (abbreviation aerobic tank), and aerobic biochemical pool hydraulic detention time is 4.7h, Dissolved oxygen is 3.5mg/L in aerobic biochemical pool, and the precipitating sludge in primary sedimentation tank burns after carrying out plate compression;
(3) entering secondary settling tank from aerobic biochemical pool after biochemical treatment, the water outlet antimony concentration of secondary settling tank is 103.2 μ g/L, The waste water of secondary settling tank separation is passed through two sections of aerobic tanks (i.e. two sections of aerobic biochemical pools), and two sections of aerobic biochemical pool hydraulic detention times are 6.5h, dissolved oxygen is 2.7mg/L in two sections of aerobic biochemical pools;Secondary settling tank inner part sludge reflux is to aerobic biochemical pool, secondary settling tank Interior excess sludge burns after carrying out plate compression;
(4) enter final deposition pool, the waste water supernatant that final deposition pool is isolated from two sections of aerobic biochemical pools after two sections of biochemical treatments Antimony concentration is 86.8 μ g/L in liquid, and the antimony removal rate of the technique is 97.4%, reaches " textile dyeing and finishing industrial water pollution object discharge mark It is quasi- " standard of total 100 μ g/L of antimony emission limit after (GB 4287-2012) modification.Final deposition pool inner part sludge reflux to two sections it is good Oxygen biochemistry pool, excess sludge burns after carrying out plate compression in final deposition pool.
Embodiment two: in the present embodiment, a kind of method that high-efficiency and economic removes antimony in dyeing waste water will be with certain printing and dyeing enterprise Dyeing waste water containing antimony handled by the technique of Fig. 1, antimony concentration is 2822.5 μ g/L in dyeing waste water containing antimony, including is walked as follows It is rapid:
(1) dyeing waste water containing antimony enters reaction tank by conditioning tank, and the hydrochloric acid dissolved with ferrous sulfate is first added in reaction tank, Ferrous sulfate dosage is 194.9 times, i.e. 550ppm of Antimony in Waste Water mass concentration, then adds white lime and anion pp Amide (PAM, Henan Hai Yun Environmental Protection Technology Co., Ltd), dosage are respectively 80ppm and 3ppm, and 200r/min quickly stirs mixed Close reaction 2min;
(2) waste water after reacting enters primary sedimentation tank, and the water outlet pH of primary sedimentation tank is 7.5, and antimony concentration is 258.3 μ g/L, just heavy The waste water of pond separation enters aerobic biochemical pool (abbreviation aerobic tank), and aerobic biochemical pool hydraulic detention time is 4.7h, aerobic biochemical Dissolved oxygen is 3.3mg/L in pond, and the precipitating sludge in primary sedimentation tank burns after carrying out plate compression;
(3) entering secondary settling tank from aerobic biochemical pool after biochemical treatment, the water outlet antimony concentration of secondary settling tank is 81.8 μ g/L, two The waste water of heavy pond separation is passed through two sections of aerobic tanks (i.e. two sections of aerobic biochemical pools), and two sections of aerobic biochemical pool hydraulic detention times are 6.5h, dissolved oxygen is 3.6mg/L, secondary settling tank inner part sludge reflux to aerobic biochemical pool, secondary settling tank in two sections of aerobic biochemical pools Interior excess sludge burns after carrying out plate compression;
(4) enter final deposition pool, the waste water supernatant that final deposition pool is isolated from two sections of aerobic biochemical pools after two sections of biochemical treatments Antimony concentration is 69.2 μ g/L in liquid, and the antimony removal rate of the technique is 97.5%, reaches " textile dyeing and finishing industrial water pollution object discharge mark It is quasi- " standard of total 100 μ g/L of antimony emission limit after (GB 4287-2012) modification.Final deposition pool inner part sludge reflux to two sections it is good Oxygen biochemistry pool, excess sludge burns after carrying out plate compression in final deposition pool.
Embodiment three: in the present embodiment, a kind of method that high-efficiency and economic removes antimony in dyeing waste water will be with certain printing and dyeing enterprise Dyeing waste water containing antimony handled by the technique of Fig. 1, antimony concentration is 2525.4 μ g/L in dyeing waste water containing antimony, including is walked as follows It is rapid:
(1) dyeing waste water containing antimony enters reaction tank by conditioning tank, in reaction tank first mixing add dissolved with ferrous sulfate and The hydrochloric acid of potassium permanganate, wherein ferrous sulfate dosage is 71.3 times of antimony mass concentration in dyeing waste water containing antimony, i.e., 180ppm, potassium permanganate dosage are 0.56 times, i.e. 100ppm of ferrous sulfate dosage, then add white lime and anion is poly- Acrylamide (PAM, Henan Hai Yun Environmental Protection Technology Co., Ltd), dosage is respectively 50ppm and 2ppm, and 200r/min is quickly stirred Mix hybrid reaction 2min;
(2) waste water after reacting enters primary sedimentation tank from reaction tank, and the water outlet pH of primary sedimentation tank is 7.2, and antimony concentration is 148.1 μ The waste water of g/L, primary sedimentation tank separation enter aerobic biochemical pool (abbreviation aerobic tank), and aerobic biochemical pool hydraulic detention time is 4.7h, Dissolved oxygen is 3.3mg/L in aerobic biochemical pool, and the precipitating sludge in primary sedimentation tank burns after carrying out plate compression;
(3) entering secondary settling tank from aerobic biochemical pool after biochemical treatment, the water outlet antimony concentration of secondary settling tank is 48.2 μ g/L, two The waste water of heavy pond separation is passed through two sections of aerobic tanks (i.e. two sections of aerobic biochemical pools), and two sections of aerobic biochemical pool hydraulic detention times are 6.5h, dissolved oxygen is 3.2mg/L, secondary settling tank inner part sludge reflux to aerobic biochemical pool, secondary settling tank in two sections of aerobic biochemical pools Interior excess sludge burns after carrying out plate compression;
(4) enter final deposition pool, the waste water supernatant that final deposition pool is isolated from two sections of aerobic biochemical pools after two sections of biochemical treatments Antimony concentration is 29.6 μ g/L in liquid, and the antimony removal rate of the technique is 98.8%, reaches " textile dyeing and finishing industrial water pollution object discharge mark It is quasi- " standard of total 100 μ g/L of antimony emission limit after (GB 4287-2012) modification.Final deposition pool inner part sludge reflux to two sections it is good Oxygen biochemistry pool, excess sludge burns after carrying out plate compression in final deposition pool.
The embodiment of the present invention is illustrated above in conjunction with attached drawing, but the present invention is not limited to the above embodiments, it is all at this Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in protection model of the invention Within enclosing.

Claims (9)

1. a kind of method of antimony in high-efficiency and economic removal dyeing waste water, which comprises the steps of:
(1) dyeing waste water containing antimony enters reaction tank by conditioning tank, first adds in reaction tank dissolved with the sour or molten of ferrous sulfate There is the acid of ferrous sulfate and potassium permanganate, then add white lime and anionic polyacrylamide, carries out coagulating;
(2) waste water after reacting enters primary sedimentation tank from reaction tank, and the waste water of primary sedimentation tank separation enters aerobic biochemical pool, in primary sedimentation tank Precipitating sludge carry out plate compression after burn;
(3) waste water after biochemical treatment enters secondary settling tank from aerobic biochemical pool, the waste water that secondary settling tank is isolated be passed through two sections it is aerobic Biochemistry pool, secondary settling tank inner part sludge reflux to aerobic biochemical pool, excess sludge burns after carrying out plate compression in secondary settling tank;
(4) waste water after two sections of biochemical treatments enters final deposition pool from two sections of aerobic biochemical pools, and the waste water that final deposition pool is isolated is Complete the waste water (up to standard receive pipe or be further processed reuse to workshop) of removal antimony, final deposition pool inner part sludge reflux to two sections it is good Oxygen biochemistry pool, excess sludge burns after carrying out plate compression in final deposition pool.
2. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (1), In the acid dissolved with ferrous sulfate, the acid is hydrochloric acid, and the dosage of the ferrous sulfate is dyeing waste water containing antimony 150~200 times of middle antimony mass concentration, the dosage of the ferrous sulfate are 300ppm~700ppm.
3. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (1), It is described that the acid is hydrochloric acid dissolved in the acid of ferrous sulfate and potassium permanganate, the dosage of the ferrous sulfate be containing 50~90 times of antimony mass concentration in antimony dyeing waste water, the dosage of the potassium permanganate are the dosage of ferrous sulfate 0.5~0.6 times, the dosage of the ferrous sulfate is 150ppm~250ppm, and the dosage of the potassium permanganate is 75ppm~150ppm.
4. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (1), The dosage of the white lime is 30ppm~100ppm.
5. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (1), The dosage of the anionic polyacrylamide is 1ppm~10ppm.
6. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (1), The coagulating specifically: 100~300r/min is quickly stirred reaction 1min~10min.
7. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (2), The hydraulic detention time of the aerobic biochemical pool is 4.5~7h, the dissolved oxygen concentration in the aerobic biochemical pool is 2.0~ 5.5mg/L;
In step (3), the hydraulic detention time of two sections of aerobic biochemical pools is 4.5~7h, two sections of aerobic biochemicals Dissolved oxygen concentration in pond is 2.0~5.5mg/L.
8. the method for antimony in high-efficiency and economic removal dyeing waste water according to claim 1, which is characterized in that in step (2), The hydraulic detention time of the aerobic biochemical pool is 4.5~5h, the dissolved oxygen concentration in the aerobic biochemical pool is 3.0~ 4.0mg/L;
In step (3), the hydraulic detention time of two sections of aerobic biochemical pools is 6~7h, two sections of aerobic biochemical pools Interior dissolved oxygen concentration is 2.5~3.8mg/L.
9. the equipment of antimony in a kind of high-efficiency and economic removal dyeing waste water characterized by comprising
Receive the conditioning tank of the dyeing waste water containing antimony;
The reaction tank being connect with the conditioning tank;
The primary sedimentation tank being connect with the reaction tank;
The aerobic biochemical pool being connect with the primary sedimentation tank;
The secondary settling tank being connect with the aerobic biochemical pool;
Two sections of aerobic biochemical pools being connect with the secondary settling tank;
The final deposition pool being connect with two sections of aerobic biochemical pools;
The waste water of the primary sedimentation tank separation enters aerobic biochemical pool, and the precipitating sludge in the primary sedimentation tank carries out plate compression After burn;
The waste water that the secondary settling tank is isolated is passed through two sections of aerobic biochemical pools, secondary settling tank inner part sludge reflux to aerobic biochemical Pond, excess sludge burns after carrying out plate compression in secondary settling tank;
The waste water that the final deposition pool is isolated is the waste water for completing removal antimony, the final deposition pool inner part sludge reflux to two Section aerobic biochemical pool, excess sludge burns after carrying out plate compression in the final deposition pool.
CN201910285382.XA 2019-04-10 2019-04-10 Method and equipment for efficiently and economically removing antimony in printing and dyeing wastewater Active CN109970278B (en)

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Publication number Priority date Publication date Assignee Title
CN112047403A (en) * 2020-09-07 2020-12-08 江苏三美化工有限公司 Treating agent and treating process for fluorine-containing antimony chloride industrial wastewater

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