CN106517652A - Anaerobic aerobic-diatomite adsorbing treatment technology for alkali-minimization wastewater in printing and dyeing industry - Google Patents
Anaerobic aerobic-diatomite adsorbing treatment technology for alkali-minimization wastewater in printing and dyeing industry Download PDFInfo
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- CN106517652A CN106517652A CN201611011272.7A CN201611011272A CN106517652A CN 106517652 A CN106517652 A CN 106517652A CN 201611011272 A CN201611011272 A CN 201611011272A CN 106517652 A CN106517652 A CN 106517652A
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- aerobic
- anaerobic
- waste water
- wastewater
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
-
- 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
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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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
Abstract
The invention discloses an anaerobic aerobic-diatomite adsorbing treatment technology for alkali-minimization wastewater in the printing and dyeing industry. The technology includes the steps that 1, the alkali-minimization wastewater is pretreated, and erephthalic acid and salt of terephthalic acid are recovered; 2, the pretreated wastewater is introduced into an anaerobic zone, degradation-resistant long-chain macromolecules in the wastewater are hydrolyzed into short-chain micromolecule organic matter in extracellular enzyme excreted by anaerobic bacteria; 3, the wastewater after anaerobic treatment is introduced into an aerobic zone, and the organic matter is decomposed to generate CO2 and water through degradation of the aerobic bacteria; 4, sewage after being treated by the aerobic zone is introduced into diatomite adsorbing equipment to be adsorbed, and therefore purified water is obtained. According to the treatment technology, the synergistic effect of biological degradation and diatomite adsorption is achieved, and ketone, alcohol, organic amine, benzene series, thiophene and part of organic ester in the water can be effectively removed; operation is constantly carried out for half a year, in this way, the removal rate of COD is kept from 96% to 99%, the removal rate of chroma is from 97% to 99.9%, and the removal rate of ammonium nitrogen is kept from 93% to 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 anaerobic-aerobic-silicon
Diatomaceous earth adsorption treatment process.
Background technology
Printing and dyeing are the traditional feature industries of China, are quickly grown 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 is the dacron silk fabrics that chemical fibre is formed Jing 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 the course of processing 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 into dyeing process, using strong alkali as a catalyst, in height
The ester group hydrolyses reaction in polyester (polyethylene terephthalate) macromole of PET fiber surface is made under the conditions of temperature, is broken
Split for hot water solubility's condensation polymer or even be fractured into some p-phthalic acids and ethylene glycol small molecule.These solubility hydrolyzate
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 are that dacron polyester hydrolyzes the p-phthalic acid (Terephthalic for producing
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, 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% or so, in other words, often give birth to by amount of hydrolysis
Lkg terylene blanks are produced, just has 3.5%～30% terylene to dissolve in water after being hydrolyzed, 1kg polyster fibres will be produced in theory
The COD of 1.09kg, Jing after decrement, per kilogram terylene blank will produce 38.2g～327g COD.It is general to subtract per myriametre terylene Jing alkali
After amount process, 30-50 ton alkali decrement waste waters are discharged, COD is up to more than 20000mg/L, pH>12.Alkali subtracts the pollution of scape waste water and asks
Topic is very prominent.
And printing and dyeing mill applies Alkali reduction technology, PVA slurries, p-phthalic acid (TA or its sodium salt), dyestuff, New-type adjuvant are made
Dyeing waste water is entered in a large number Deng benzene series, naphthalene system, anthraquinone system and aniline, nitrobenzene bio-refractory Organic substance, is produced highly concentrated
Degree, high alkalinity, the printing and dyeing-alkali decrement waste water of difficult degradation.Polyster fibre can not be substituted, generation and the improvement of alkali decrement waste water
It is necessary and long-term.Therefore a kind of cost-effective dyeing water treatment technology is developed, especially alkali decrement waste water
Treatment process, own Jing become the severe problem that current environmental protection industry (epi) must be faced.
The content of the invention
It is an object of the invention to propose science and engineering at a kind of dyeing alkali decrement waste water anaerobic-aerobic-diatomite adsorption
Skill, is capable of the alkali decrement waste water of effective process dyeing generation.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of dyeing alkali decrement waste water anaerobic-aerobic-diatomite adsorption handling process, which includes：
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid and its salt；
(2) waste water after pretreatment is gone to be passed through anaerobism section by described, the difficult degradation long-chain macromolecule in waste water is in anaerobic bacteria
The exoenzyme of secretion is hydrolyzed to short chain small organic molecule；
(3) waste water of anaerobic treatment is passed through into aerobic section, Organic substance is decomposed generation CO by the degraded of Jing aerobic bacterias2And water；
(4) sewage of aerobic section process is passed through into diatomite adsorption equipment, carries out adsorption treatment, be purified water.
The present invention passes through anaerobism section and partial organic substances therein are removed by aerobic section, finally by diatomite adsorption equipment
(the such as macromole such as polysaccharide, protein has to dispose the hardly degraded organic substances such as colourity, the COD of residual and biological metabolic product
Machine thing).Meanwhile, microorganism of the diatomite adsorption from upstream anaerobism section and aerobic section, biofilm, forms secondary over celite
Biological treatment+adsorption treatment, substantially increases treatment effeciency and depth.
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 (4)：
(5) purified water for obtaining is passed through plant treatment pond to be purified.Plant in the plant treatment pond and be implanted with phragmites communiss, float
The plants such as duckweed, Rhizoma Nelumbiniss, purified water sluggish flow in the plant treatment pond, further precipitate and carry out plant purification.
Handling process of the present invention, which plays the synergism of biodegradation and diatomite adsorption, effectively can remove
Ketone, alcohols, organic amine, benzene homologues, thiophene and part organic ester in water, Jing half a year continuously run, and COD clearances are protected
Hold in 96-99%, chroma removal rate 97-99.9%, ammonia nitrogen removal frank are 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 anaerobic-aerobic-diatomite adsorption handling process, which includes：
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid and its salt；
(2) waste water after pretreatment is gone to be passed through anaerobism section by described, the difficult degradation long-chain macromolecule in waste water is in anaerobic bacteria
The exoenzyme of secretion is hydrolyzed to short chain small organic molecule；
(3) waste water of anaerobic treatment is passed through into aerobic section, Organic substance is decomposed generation CO by the degraded of Jing aerobic bacterias2And water；
(4) sewage of aerobic section process is passed through into diatomite adsorption equipment, carries out adsorption treatment, be purified water.
Embodiment 2
A kind of dyeing alkali decrement waste water anaerobic-aerobic-diatomite adsorption handling process, which includes：
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid and its salt；
(2) waste water after pretreatment is gone to be passed through anaerobism section by described, the difficult degradation long-chain macromolecule in waste water is in anaerobic bacteria
The exoenzyme of secretion is hydrolyzed to short chain small organic molecule；
(3) waste water of anaerobic treatment is passed through into aerobic section, Organic substance is decomposed generation CO by the degraded of Jing aerobic bacterias2And water；
(4) sewage of aerobic section process is passed through into diatomite adsorption equipment, carries out adsorption treatment, be purified water；
(5) purified water for obtaining is passed through plant treatment pond to be purified.Plant in the plant treatment pond and be implanted with phragmites communiss, float
The plants such as duckweed, Rhizoma Nelumbiniss, purified water sluggish flow in the plant treatment pond, further precipitate and carry out plant purification.
Jing half a year is continuously run, and 95-99%, chroma removal rate 91-96%, ammonia nitrogen removal frank are maintained to COD clearances
It is maintained at 90-97%.
Jing half a year is continuously run, and the technique of embodiment 1 and 2 is maintained at 96-99%, chroma removal rate 97- to COD clearances
99.9%, ammonia nitrogen removal frank is maintained at 93-98%.
Claims (2)
1. a kind of dyeing alkali decrement waste water anaerobic-aerobic-diatomite adsorption handling process, which includes：
(1) pretreatment alkali decrement waste water, reclaims p-phthalic acid and its salt；
(2) waste water after pretreatment is gone to be passed through anaerobism section by described, the difficult degradation long-chain macromolecule in waste water is secreted in anaerobic bacteria
Exoenzyme be hydrolyzed to short chain small organic molecule；
(3) waste water of anaerobic treatment is passed through into aerobic section, Organic substance is decomposed generation CO by the degraded of Jing aerobic bacterias2And water；
(4) sewage of aerobic section process is passed through into diatomite adsorption equipment, carries out adsorption treatment, be purified water.
2. dyeing alkali decrement waste water anaerobic-aerobic-diatomite adsorption handling process as claimed in claim 1, its feature exist
In carrying out after step (4)：
(5) purified water that diatomite adsorption equipment is obtained is passed through plant treatment pond to be purified.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011272.7A CN106517652A (en) | 2016-11-17 | 2016-11-17 | Anaerobic aerobic-diatomite adsorbing treatment technology for alkali-minimization wastewater in printing and dyeing industry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011272.7A CN106517652A (en) | 2016-11-17 | 2016-11-17 | Anaerobic aerobic-diatomite adsorbing treatment technology for alkali-minimization wastewater in printing and dyeing industry |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765779A (en) * | 2005-09-02 | 2006-05-03 | 浙江大学 | Printing and dyeing wastewater recovery and disposal method |
| CN101734828A (en) * | 2009-12-25 | 2010-06-16 | 浙江工业大学 | Process for treating and recovering dyeing sewage water |
| 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 CN201611011272.7A patent/CN106517652A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765779A (en) * | 2005-09-02 | 2006-05-03 | 浙江大学 | Printing and dyeing wastewater recovery and disposal method |
| CN101734828A (en) * | 2009-12-25 | 2010-06-16 | 浙江工业大学 | Process for treating and recovering dyeing sewage water |
| 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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