CN106477820A - A kind of dyeing alkali decrement waste water ozone oxidation precipitates flyash slag filtration activated carbon filtration treatment technique - Google Patents

A kind of dyeing alkali decrement waste water ozone oxidation precipitates flyash slag filtration activated carbon filtration treatment technique Download PDF

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Publication number
CN106477820A
CN106477820A CN201611011158.4A CN201611011158A CN106477820A CN 106477820 A CN106477820 A CN 106477820A CN 201611011158 A CN201611011158 A CN 201611011158A CN 106477820 A CN106477820 A CN 106477820A
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China
Prior art keywords
waste water
ozone oxidation
activated carbon
flyash
passed
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CN201611011158.4A
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Chinese (zh)
Inventor
张达明
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无锡明盛纺织机械有限公司
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Priority to CN201611011158.4A priority Critical patent/CN106477820A/en
Publication of CN106477820A publication Critical patent/CN106477820A/en

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    • 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
    • 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
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved 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
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/308Dyes; Colorants; Fluorescent agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/32Hydrocarbons, e.g. oil
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/34Organic compounds containing oxygen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/40Organic compounds containing sulfur
    • 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
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae

Abstract

The invention discloses a kind of dyeing alkali decrement waste water ozone oxidation precipitates flyash slag filtration activated carbon filtration treatment technique, which includes:(1) alkali decrement waste water is pre-processed, reclaims terephthalic acid (TPA) and its salt;(2) waste water after pretreatment is gone to be passed through ozone Oxidation Treatment by described;(3) soluble ferric iron salt will be added in the sewage of the ozone Oxidation Treatment to carry out precipitation process;(4) after precipitating, waste water is passed through flyash/slag filtration equipment;(5) waste water that flyash/slag filtration equipment is filtered is passed through activated carbon filter plant, is purified water.Handling process of the present invention, ketone, alcohols, organic amine, benzene homologues, thiophene and the part organic ester that effectively can be gone in eliminating water, continuously runs through half a year, is maintained at 96 99% to COD clearance, chroma removal rate 97 99.9%, ammonia nitrogen removal frank is maintained at 93 98%.

Description

A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder filtration- Activated carbon filtration treatment technique
Technical field
The present invention relates to technical field of waste water processing, more particularly to a kind of dyeing alkali decrement waste water ozone oxidation-heavy Shallow lake-powdered coal ash-cinder filtration-activated carbon filtration treatment technique.
Background technology
Printing and dyeing are the traditional feature industries of China, quickly grow in Jiangsu, Zhejiang, Guangdong and coastal area in recent years, But the pollution problem that dyeing waste water is caused shows and projects also with the expansion of industry size day.Dyeing is industrial wastewater discharge Rich and influential family, according to incompletely statistics, the daily discharge capacity of China's dyeing waste water about 3 × 106~4 × 106m3.
Share of the terylene chemical fibre in piece market is continuously increased in recent years, and China's terylene yield is 101.5 within 1991 Ten thousand tons, 6,950,000 tons are reached in November, 2002 China's terylene yield.And imitated real silk terylene chemical fibre is compared on the market of home and abroad Popular chemical fabric, imitated real silk terylene chemical fibre are the dacron silk fabrics that chemical fibre is formed after Alkali reduction fibre modification, and its style is forced Nearly silk broadcloth, wearability are better than silk broadcloth again, and Productio of Polyester Silk heat in the market is also lasting.Terylene artificial silk exists Need in process using Alkali reduction technology, produce substantial amounts of Alkali Weight Reduction Treatment of Polyester waste water, and controlling for traditional dyeing waste water Reason brings new problem.
Alkali Weight Reduction Treatment of Polyester technology is referred in terylene blank before dyeing process is entered, using strong alkali as a catalyst, in height React the ester group hydrolyses in polyester (PET) macromolecular of PET fiber surface under the conditions of temperature, break Split even some terephthalic acid (TPA)s and ethylene glycol small molecule is fractured into for hot water solubility's condensation polymer.These soluble hydrolysates Condensation polymer is separated out from fiber surface in water-washing process, and being dissolved in the water makes fiber decrement.As outer layer fiber is by caustic corrosion, wash Synthetic fibre fiber attenuates after subtracting, softens, and generates the soft feel as real silk and elegant sense, but also brings while terylene decrement High concentration, high alkalinity, the organic wastewater-alkali of difficult degradation subtract most waste water.
Major pollutants in alkali decrement waste water hydrolyze, for dacron polyester, the terephthalic acid (TPA) (Terephthalic for producing Acid, TA) and ethylene glycol (Ethylene Glycol, EG).Because terephthalic acid (TPA) is in pH>In 12 alkaline waste water, its acid group from Son is reacted with the sodium ion of NaOH again, and therefore, hydrolysate is gone out in the form of organic salt para-phthalic sodium (DT) Now in waste water.Terylene blank in Silk processing procedure, in other words, often give birth to typically 3.5%~30% or so by amount of hydrolysis L kg terylene blank is produced, just has 3.5%~30% terylene to dissolve in water after being hydrolyzed, 1kg polyster fibre will be produced in theory The COD of raw 1.09kg, after decrement, per kilogram terylene blank will produce 38.2g~327g COD.General every myriametre terylene is through alkali After decrement treatment, 30-50 ton alkali decrement waste water is discharged, COD is up to more than 20000mg/L, pH>12.Alkali subtracts the pollution of scape waste water Problem is very prominent.
And printing and dyeing mill's application Alkali reduction technology, make PVA slurry, terephthalic acid (TPA) (TA or its sodium salt), dyestuff, New-type adjuvant Dyeing waste water is entered in a large number Deng benzene series, naphthalene system, anthraquinone system and aniline, nitrobenzene bio-refractory organic matter, produce highly concentrated Degree, high alkalinity, the printing and dyeing-alkali decrement waste water of difficult degradation.Polyster fibre can not be substituted, the generation of alkali decrement waste water and improvement It is necessary and long-term.Therefore a kind of cost-effective dyeing water treatment technology developed, especially alkali decrement waste water Treatment process, oneself is through becoming the severe problem that current environmental protection industry (epi) must be faced.
Content of the invention
It is an object of the invention to proposing a kind of dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder mistake Filter-activated carbon filtration treatment technique, is capable of the alkali decrement waste water of effective process dyeing generation.
For reaching this purpose, the present invention is employed the following technical solutions:
A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder filtration-activated carbon filtration treatment work Skill, it include:
(1) alkali decrement waste water is pre-processed, reclaims terephthalic acid (TPA) and its salt;
(2) waste water after pretreatment is gone to be passed through ozone Oxidation Treatment by described;
(3) soluble ferric iron salt will be added in the sewage of the ozone Oxidation Treatment to carry out precipitation process;
(4) after precipitating, waste water is passed through flyash/slag filtration equipment;
(5) waste water that flyash/slag filtration equipment is filtered is passed through activated carbon filter plant, is purified water.
, used as adsorbing medium, partial replacement this area is wide for the employing flyash of novelty of the present invention, slag or paint mixture The general activated carbon for using or diatomite.As flyash, slag itself are discarded object, cost need to be spent to be processed, this Bright by its waste field, novelty for sewage disposal medium, not only save cost, also achieve refuse reclamation.
After the present invention is filtered, mitigate significantly the load of activated carbon equipment using flyash/slag filtration equipment, therefore activity Charcoal filter plant is intended only as the use of last locking device, when flyash/slag filtration equipment filter condition is preferable, the work Property charcoal filter plant can be stopped work.Even if the flyash/slag filtration equipment filter effect is slightly worse, but which significantly reduces dirt The concentration of dye thing, its allow activated carbon equipment to can achieve filter effect using a small amount of filling, and therefore which greatlys save Cost.Even if using the activated carbon equipment of prior art, its loadings is full of, then its service life is compared to other techniques, Greatly prolonged.Therefore, using after flyash/slag filtration equipment, which can greatly save cost to the present invention.
After the present invention is using pretreatment, by ozone oxidation by partial organic substances oxidation Decomposition therein, finally by sand The hardly degraded organic substances such as the colourity of residual, COD are disposed in filter, flyash/slag adsorption plant and biological metabolic product is (such as many The larger molecular organicses such as glycan, protein).
The present invention is precipitated after ozone Oxidation Treatment, and then combines sand filtration and flyash/slag filtration, whole stream Journey process is simple, investment are little, process depth big, it may be difficult to which the comparison of the process such as colourity of process is clean.
Technique of the present invention first carries out terephthalic acid (TPA) and its salt, not only saves cost, also reduces follow-up place The load of science and engineering skill.
Preferably, carry out after step (5):
(6) purified water for obtaining is passed through plant treatment pond to be purified.Plant in the plant treatment pond and be implanted with reed, float The plants such as duckweed, lotus rhizome, the purified water are slowly flowed in the plant treatment pond, precipitate and carry out plant purification further.
Handling process of the present invention, the ketone that effectively can be gone in eliminating water, alcohols, organic amine, benzene homologues, thiophene and Part organic ester, continuously ran through half a year, was maintained at 96-99% to COD clearance, and chroma removal rate 97-99.9%, ammonia nitrogen go Except rate is maintained at 93-98%.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder filtration-activated carbon filtration treatment work Skill, it include:
(1) alkali decrement waste water is pre-processed, reclaims terephthalic acid (TPA) and its salt;
(2) waste water after pretreatment is gone to be passed through ozone Oxidation Treatment by described;
(3) soluble ferric iron salt will be added in the sewage of the ozone Oxidation Treatment to carry out precipitation process;
(4) after precipitating, waste water is passed through flyash/slag filtration equipment;
(5) waste water that flyash/slag filtration equipment is filtered is passed through activated carbon filter plant, is purified water.
Embodiment 2
A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder filtration-activated carbon filtration treatment work Skill, it include:
(1) alkali decrement waste water is pre-processed, reclaims terephthalic acid (TPA) and its salt;
(2) waste water after pretreatment is gone to be passed through ozone Oxidation Treatment by described;
(3) soluble ferric iron salt will be added in the sewage of the ozone Oxidation Treatment to carry out precipitation process;
(4) after precipitating, waste water is passed through flyash/slag filtration equipment;
(5) waste water that flyash/slag filtration equipment is filtered is passed through activated carbon filter plant, is purified water.
(6) purified water for obtaining is passed through plant treatment pond to be purified.Plant in the plant treatment pond and be implanted with reed, float The plants such as duckweed, lotus rhizome, the purified water are slowly flowed in the plant treatment pond, precipitate and carry out plant purification further.
Continuously ran through half a year, 95-99%, chroma removal rate 91-96%, ammonia nitrogen removal frank is maintained to COD clearance It is maintained at 90-97%.
Continuously run through half a year, the technique of embodiment 1 and 2 is maintained at 96-99%, chroma removal rate 97- to COD clearance 99.9%, ammonia nitrogen removal frank is maintained at 93-98%.

Claims (2)

1. a kind of dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder filtration-activated carbon filtration treatment technique, Which includes:
(1) alkali decrement waste water is pre-processed, reclaims terephthalic acid (TPA) and its salt;
(2) waste water after pretreatment is gone to be passed through ozone Oxidation Treatment by described;
(3) soluble ferric iron salt will be added in the sewage of the ozone Oxidation Treatment to carry out precipitation process;
(4) after precipitating, waste water is passed through flyash/slag filtration equipment;
(5) waste water that flyash/slag filtration equipment is filtered is passed through activated carbon filter plant, is purified water.
2. dyeing alkali decrement waste water ozone oxidation-precipitation-powdered coal ash-cinder filtration-activated carbon as claimed in claim 1 Filtration treatment technique, it is characterised in that carry out after step (5):
(6) purified water for obtaining is passed through plant treatment pond to be purified.
CN201611011158.4A 2016-11-17 2016-11-17 A kind of dyeing alkali decrement waste water ozone oxidation precipitates flyash slag filtration activated carbon filtration treatment technique CN106477820A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104926018A (en) * 2015-05-14 2015-09-23 宁波沐德环境科技有限公司 Resourceful treatment process for alkali-minimization waste water
EP2657198B1 (en) * 2010-12-24 2016-01-06 Boying Xiamen Science And Technology Co., Ltd. Printing and dyeing wastewater treatment and reuse apparatus and method therefor
CN105540967A (en) * 2015-12-09 2016-05-04 大唐国际化工技术研究院有限公司 Processing method for reducing and recycling organic waste water and processing system
CN105645681A (en) * 2016-01-11 2016-06-08 常州大学 Dyeing wastewater advanced treatment device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2657198B1 (en) * 2010-12-24 2016-01-06 Boying Xiamen Science And Technology Co., Ltd. Printing and dyeing wastewater treatment and reuse apparatus and method therefor
CN104926018A (en) * 2015-05-14 2015-09-23 宁波沐德环境科技有限公司 Resourceful treatment process for alkali-minimization waste water
CN105540967A (en) * 2015-12-09 2016-05-04 大唐国际化工技术研究院有限公司 Processing method for reducing and recycling organic waste water and processing system
CN105645681A (en) * 2016-01-11 2016-06-08 常州大学 Dyeing wastewater advanced treatment device

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