CN106336045A - Ozone oxidation-sedimentation-sand filtration-sulfonated coal filtering treatment process for alkali-decrement wastewater in printing and dyeing industry - Google Patents
Ozone oxidation-sedimentation-sand filtration-sulfonated coal filtering treatment process for alkali-decrement wastewater in printing and dyeing industry Download PDFInfo
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- CN106336045A CN106336045A CN201611011399.9A CN201611011399A CN106336045A CN 106336045 A CN106336045 A CN 106336045A CN 201611011399 A CN201611011399 A CN 201611011399A CN 106336045 A CN106336045 A CN 106336045A
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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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
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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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/322—Volatile compounds, e.g. benzene
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses an ozone oxidation-sedimentation-sand filtration-sulfonated coal filtering treatment process for alkali-decrement wastewater in printing and dyeing industry. The process comprises the steps that 1, alkali-decrement wastewater is pretreated, and terephthalic acid and its salt are recovered; 2, ozone is led to the wastewater obtained after pretreatment to perform oxidation treatment; 3, soluble iron salt is added to the sewage subjected to ozone oxidation treatment to perform sedimentation treatment; 4, the wastewater obtained after sedimentation is led to a sand filtration device for filtration treatment; 5, the wastewater obtained after sand filtration is led to a sulfonated coal filtering device, and purified water is obtained. By the adoption of the treating process, ketones, alcohols, organic amines, benzene series, thiophene and a part of organic esters in water can be effectively removed, and after continuous operation for half a year, the COD removal rate is kept to be 96-99%, the chroma removal rate is kept to be 97-99.9%, and the ammonia nitrogen removal rate is kept to be 93-98%.
Description
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-sand filtration-sulfonated coal 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 causes shows day prominent also with the expansion of industry size.Dyeing is industrial wastewater discharge
Rich and influential family, according to incompletely statistics, the daily discharge capacity of China's dyeing waste water is about 3 × 106～4 × 106m3.
Share in piece market for the terylene chemical fibre is continuously increased in recent years, and China's terylene yield is 101.5 within 1991
Ten thousand tons, reach 6,950,000 tons in November, 2002 China's terylene yield.And imitated real silk terylene chemical fibre is to compare on the market of home and abroad
Popular chemical fabric, imitated real silk terylene chemical fibre is the dacron silk fabrics that chemical fibre is formed after Alkali reduction fibre modification, and its style is forced
Nearly silk broadcloth, wearability is better than silk broadcloth again, and Productio of Polyester Silk heat in the market is also lasting.Terylene artificial silk exists
Need in the course of processing, using Alkali reduction technology, to produce substantial amounts of Alkali Weight Reduction Treatment of Polyester waste water, be controlling of traditional dyeing waste water again
Reason brings new problem.
Alkali Weight Reduction Treatment of Polyester technology refers in terylene blank before entering dyeing process, using strong alkali as a catalyst, in height
Make the ester group hydrolyses reaction in polyester (polyethylene terephthalate) macromole of PET fiber surface under the conditions of temperature, break
Split and be even fractured into some p-phthalic acids and ethylene glycol small molecule for hot water solubility's condensation polymer.These solubility hydrolyzate
Condensation polymer separates out from fiber surface in water-washing process, is dissolved in the water and makes fiber decrement.Because outer layer fiber is by caustic corrosion, wash
Synthetic fibre fiber attenuates after subtracting, deliquescing, creates 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 waste water.
P-phthalic acid (the terephthalic that major pollutants in alkali decrement waste water produce for dacron polyester hydrolysis
Acid, ta) and ethylene glycol (ethylene glycol, eg).Because p-phthalic acid is in ph > in 12 alkaline waste water, its acid group from
Son is reacted with the sodium ion of sodium hydroxide again, and therefore, hydrolyzate is gone out in the form of organic salt para-phthalic sodium (dt)
Now in waste water.Terylene blank in Silk processing procedure, typically 3.5%～30% about, in other words, often give birth to by amount of hydrolysis
Produce l kg terylene blank, just have 3.5%～30% terylene to dissolve in water after being hydrolyzed, 1kg polyster fibre will produce in theory
The cod of raw 1.09kg, after decrement, per kilogram terylene blank will produce 38.2g～327g cod.Typically every myriametre terylene is through alkali
After decrement treatment, discharge 30-50 ton alkali decrement waste water, 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, p-phthalic acid (ta or its sodium salt), dyestuff, New-type adjuvant
Enter dyeing waste water in a large number Deng benzene series, naphthalene system, anthraquinone system and aniline, nitrobenzene bio-refractory Organic substance, 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, be also long-term.Therefore develop a kind of cost-effective dyeing water treatment technology, especially alkali decrement waste water
Treatment process, oneself through become current environmental protection industry (epi) must faced by severe problem.
Content of the invention
It is an object of the invention to proposing a kind of dyeing alkali decrement waste water ozone oxidation-precipitation-sand filtration-sulfonated coal mistake
Filter handling process, is capable of the alkali decrement waste water of effective process dyeing generation.
For reaching this purpose, the present invention employs the following technical solutions:
A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-sand filtration-sulfonated coal filtration treatment technique, comprising:
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid 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 described ozone Oxidation Treatment to carry out precipitation process；
(4) after precipitating, waste water is passed through sand filtration apparatus, carries out filtration treatment；
(5) waste water after sand filtration is passed through sulfonated coal filter plant, is purified water.
The employing sulfonated coal of novelty of the present invention, as adsorbing medium, replaces activated carbon used widely in the art or diatom
Soil.Sulfonated coal is the sulfonated products that coal and oleum or concentrated sulphuric acid act on gained, and it has loose structure, has water absorbing capacity, inhales
Volumetric expansion after water, the coefficient of expansion is 110～115.The present invention adopts sulfonated coal to replace activated carbon or kieselguhr, due to current state
The haze that inside takes place frequently pollutes, and country's compression coal uses as fuel and industrial chemicals, leads to coal enterprise's production capacity limited production to pause.This
After invention adopts sulfonated coal, so that the free of contamination use of coal, and with low cost, enterprise governance pollution can be reduced
Cost.
After the present invention adopts pretreatment, by ozone oxidation by partial organic substances oxidation Decomposition therein, finally by sand
Filter, sulfonated coal adsorption plant dispose the hardly degraded organic substances such as the colourity of residual, cod and biological metabolic product (as polysaccharide,
The larger molecular organicses such as protein).
The present invention is precipitated after ozone Oxidation Treatment, and then combines sand filtration and sulfonated coal filtration, whole flow process work
Skill is simple, and investment is little, processes depth greatly it may be difficult to the comparison of the process such as colourity processing is clean.
Technique of the present invention first carries out p-phthalic acid 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 obtaining is passed through plant treatment pond to be purified.Plant in described plant treatment pond and be implanted with phragmites communiss, float
The plants such as duckweed, Rhizoma Nelumbiniss, described purified water sluggish flow in described plant treatment pond, precipitates further and carries out plant purification.
Handling process of the present invention, can effectively go ketone in eliminating water, alcohols, organic amine, benzene homologues, thiophene and
Part organic ester, continuously ran through half a year, cod clearance was maintained at 96-99%, chroma removal rate 97-99.9%, ammonia nitrogen goes
Except rate is maintained at 93-98%.
Specific embodiment
To further illustrate technical scheme below by specific embodiment.
Embodiment 1
A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-sand filtration-sulfonated coal filtration treatment technique, comprising:
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid 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 described ozone Oxidation Treatment to carry out precipitation process；
(4) after precipitating, waste water is passed through sand filtration apparatus, carries out filtration treatment；
(5) waste water after sand filtration is passed through sulfonated coal filter plant, is purified water.
Embodiment 2
A kind of dyeing alkali decrement waste water ozone oxidation-precipitation-sand filtration-sulfonated coal filtration treatment technique, comprising:
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid 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 described ozone Oxidation Treatment to carry out precipitation process；
(4) after precipitating, waste water is passed through sand filtration apparatus, carries out filtration treatment；
(5) waste water after sand filtration is passed through sulfonated coal filter plant, is purified water.
(6) purified water obtaining is passed through plant treatment pond to be purified.Plant in described plant treatment pond and be implanted with phragmites communiss, float
The plants such as duckweed, Rhizoma Nelumbiniss, described purified water sluggish flow in described plant treatment pond, precipitates further and carries out plant purification.
Continuously run through half a year, cod clearance is maintained at 95-99%, chroma removal rate 91-96%, ammonia nitrogen removal frank
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-sand filtration-sulfonated coal filtration treatment technique, comprising:
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid 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 described ozone Oxidation Treatment to carry out precipitation process；
(4) after precipitating, waste water is passed through sand filtration apparatus, carries out filtration treatment；
(5) waste water after sand filtration is passed through sulfonated coal filter plant, is purified water.
2. dyeing alkali decrement waste water ozone oxidation-precipitation-sand filtration-sulfonated coal filtration treatment work as claimed in claim 1
Skill is it is characterised in that carry out after step (5):
(6) purified water obtaining is passed through plant treatment pond to be purified.
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|---|---|---|---|
| CN201611011399.9A CN106336045A (en) | 2016-11-17 | 2016-11-17 | Ozone oxidation-sedimentation-sand filtration-sulfonated coal filtering treatment process for alkali-decrement wastewater in printing and dyeing industry |
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| CN201611011399.9A CN106336045A (en) | 2016-11-17 | 2016-11-17 | Ozone oxidation-sedimentation-sand filtration-sulfonated coal filtering treatment process for alkali-decrement wastewater in printing and dyeing industry |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176226A (en) * | 1997-07-30 | 1998-03-18 | 上海师范大学 | Alkali decrement process for waste water processing |
| CN204097280U (en) * | 2014-08-23 | 2015-01-14 | 顾云峰 | A kind of Sewage treatment systems |
| 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 |
-
2016
- 2016-11-17 CN CN201611011399.9A patent/CN106336045A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1176226A (en) * | 1997-07-30 | 1998-03-18 | 上海师范大学 | Alkali decrement process for waste water processing |
| CN204097280U (en) * | 2014-08-23 | 2015-01-14 | 顾云峰 | A kind of Sewage treatment systems |
| 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 |
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