CN110526489A - A kind for the treatment of process of dyeing waste water - Google Patents
A kind for the treatment of process of dyeing waste water Download PDFInfo
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- CN110526489A CN110526489A CN201810518303.0A CN201810518303A CN110526489A CN 110526489 A CN110526489 A CN 110526489A CN 201810518303 A CN201810518303 A CN 201810518303A CN 110526489 A CN110526489 A CN 110526489A
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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
- C02F1/001—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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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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
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind for the treatment of process of dyeing waste water, first mix organic acid with dyeing waste water, and the ultrasonic tank of importing is ultrasonically treated after adsorbent is added；MBR processing will be carried out after the dyeing waste water filtering after ultrasound again, coagulant is added in dyeing waste water after treatment, the waste water after coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；Wherein, the coagulant of use is made of using polydimethyl diallyl ammonium chloride, water, polyalcohol, polylactic acid, surfactant, montmorillonite, Sodium Polyacrylate, polymeric aluminum sulfate iron, acrylic acid, microorganism coagulant, cellulose and disodium ethylene diamine tetraacetate.The COD removal rate of dyeing waste water after processed by the invention is up to 93% or more, further improves the treatment effeciency of dyeing waste water, significantly reduces its pollution to environment.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind for the treatment of process of dyeing waste water.
Background technique
Dyeing waste water is the waste water of printing and dyeing mill's discharge based on processing cotton, fiber crops, chemical fibre and its blending product.Printing and dyeing are useless
Water water is larger, 100-200 tons of textile water consumption of 1 ton of every dyeing and printing process, and wherein 80-90% becomes waste water.Textile printing and dyeing wastewater tool
There is the features such as water is big, organic pollutant content is high, alkalinity is big, change of water quality is big, belongs to one of intractable industrial wastewater, waste water
In containing dyestuff, slurry, auxiliary agent, finish, soda acid, fiber impurity, sand substance, inorganic salts etc..
Dyeing is industrial wastewater discharge rich and influential family, according to incompletely statistics, the national daily discharge amount 3 × 10 of dyeing waste water6-
4×106m3.Dyeing waste water has the characteristics that water is big, organic pollutant content is high, coloration is deep, alkalinity is big, change of water quality is big, belongs to
Intractable industrial wastewater.It is many kinds of in dyeing waste water, have desized wastewater, kiering waste water, alkali decrement waste water, bleaching effluent,
Mercerizing waste water, printing waste water and dyeing waste-water etc., due to coming from different process, the pollutant component in waste water also have compared with
Big difference.Majority printing and dyeing mill is all made of same treatment process to above-mentioned waste water at present, i.e., by the processing of the processing means such as biochemistry
Direct emission afterwards.But in order to qualified discharge, it is larger that biochemistry meets higher operating pressure, and is unable to qualified discharge sometimes, environmental protection
Pressure is larger.
In current environmental protection technology industry, coagulant is widely used in water and wastewater industry, water pollution control and purification of waste water and returns
With etc. field of engineering technology.Coagulant belongs to high-tech content high value added product, it largely decides water process
The innovation of technology and development, the simplification of process flow, cost of water treatment and effects of purification quality.Therefore, novel, highly effective coagulation
The research and development of agent are the development priority of water process environmental protection industry always.
Summary of the invention
The technical issues of solution: in order to improve the treatment effect to dyeing waste water, the present invention first uses organic acid and absorption
Agent pre-processes dyeing waste water, organic dyestuff, alkali, refining agent, chelated dispersants etc. is carried out destruction absorption, using MBR
Coagulation Method is used again after carrying out biological treatment, still undegradable pollutant can be removed by coagulation co-precipitation.
A kind of technical solution: treatment process of dyeing waste water, comprising the following steps:
Step 1, organic acid is mixed with dyeing waste water, the ultrasonic tank of importing is ultrasonically treated after 20-30wt% adsorbent is added；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 4h-12h, the concentration of dissolved oxygen is 1mg/L-5mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 20-40mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using polydimethyl diallyl ammonium chloride, water, polyalcohol, polylactic acid, table
Face activating agent, montmorillonite, Sodium Polyacrylate, polymeric aluminum sulfate iron, acrylic acid, microorganism coagulant, cellulose and ethylenediamine tetraacetic
Acetic acid disodium is made.
Further, mixture of the adsorbent for active carbon and diatomite, the weight ratio of active carbon and diatomite in step 1
For 1:0.3-0.7.
Further, organic acid is one of benzoic acid, citric acid, tartaric acid or oxalic acid, organic acid and print in step 1
The volume ratio for contaminating waste water is 1:800-1000.
Further, the condition being ultrasonically treated in step 1 is 800-1000W, 20-30min.
Further, the raw material of the coagulant is in parts by weight are as follows: and 10-20 parts of polydimethyl diallyl ammonium chloride,
25-40 parts of water, 2-5 parts of polyalcohol, 1-4 parts of polylactic acid, 2-4 parts of surfactant, 1-4 parts of montmorillonite, Sodium Polyacrylate 2-6
Part, 7-15 parts of polymeric aluminum sulfate iron, 0.8-2.5 parts of acrylic acid, 4-9 parts of microorganism coagulant, 2-6 parts of cellulose, ethylenediamine tetraacetic
3-7 parts of acetic acid disodium.
Further, the polyalcohol is one of neopentyl glycol, pentaerythrite or 1,3-BDO.
Further, the surfactant is dodecyl sodium sulfate.
Further, the cellulose is one of hydroxyethyl cellulose, hydroxypropyl cellulose or carboxymethyl cellulose.
The preparation method of above-mentioned FZC coagulant for treating sewage, comprising the following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 80-100 DEG C of heat preservation 30-40min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, are warming up to 40-50 DEG C,
Acrylic acid is added dropwise with 0.5-1mL/min, keeps the temperature 2-3h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
The utility model has the advantages that the present invention first uses organic acid and adsorbent to pre-process dyeing waste water, by organic dyestuff,
Alkali, refining agent, chelated dispersants etc. carry out destruction absorption, use Coagulation Method again after carrying out biological treatment using MBR, will can not yet drop
The pollutant of solution is removed by coagulation co-precipitation.The COD removal rate of dyeing waste water after processed by the invention be up to 93% with
On, the treatment effeciency of dyeing waste water is further improved, its pollution to environment is significantly reduced.
Specific embodiment
Embodiment 1
A kind for the treatment of process of dyeing waste water, comprising the following steps:
Step 1, by benzoic acid, 1:800 is mixed by volume with dyeing waste water, and the mixing that 20wt% active carbon and diatomite is added is inhaled
It imports ultrasonic tank after attached dose to be ultrasonically treated, the condition of ultrasonic treatment is 800W, 30min, the weight of active carbon and diatomite
Than for 1:0.3；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 4h, the concentration of dissolved oxygen is 1mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 20mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using 10 parts of polydimethyl diallyl ammonium chloride, water 25 in parts by weight
Part, 2 parts of neopentyl glycol, 1 part of polylactic acid, 2 parts of dodecyl sodium sulfate, 1 part of montmorillonite, 2 parts of Sodium Polyacrylate, polyaluminium sulfate
7 parts of iron, 0.8 part of acrylic acid, 4 parts of microorganism coagulant, 2 parts of hydroxyethyl cellulose and 3 parts of disodium ethylene diamine tetraacetate are made.
The preparation method of above-mentioned FZC coagulant for treating sewage, comprising the following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 80 DEG C of heat preservation 40min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, is warming up to 40 DEG C, with
Acrylic acid is added dropwise in 0.5mL/min, keeps the temperature 3h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
The COD of dyeing waste water before handling through the present embodiment is 4000mg/L, and treated, and COD is 235mg/L, and COD is gone
Except rate is up to 94.12%.
Embodiment 2
A kind for the treatment of process of dyeing waste water, comprising the following steps:
Step 1, by benzoic acid, 1:850 is mixed by volume with dyeing waste water, and the mixing that 25wt% active carbon and diatomite is added is inhaled
It imports ultrasonic tank after attached dose to be ultrasonically treated, the condition of ultrasonic treatment is 800W, 30min, the weight of active carbon and diatomite
Than for 1:0.5；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 6h, the concentration of dissolved oxygen is 1.5mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 25mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using 14 parts of polydimethyl diallyl ammonium chloride, water 31 in parts by weight
Part, 4 parts of pentaerythrite, 2 parts of polylactic acid, 3 parts of dodecyl sodium sulfate, 2 parts of montmorillonite, 3 parts of Sodium Polyacrylate, polyaluminium sulfate
8 parts of iron, 1.3 parts of acrylic acid, 7 parts of microorganism coagulant, 3 parts of hydroxypropyl cellulose and 5 parts of disodium ethylene diamine tetraacetate are made.
The preparation method of above-mentioned FZC coagulant for treating sewage, comprising the following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 90 DEG C of heat preservation 40min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, is warming up to 45 DEG C, with
Acrylic acid is added dropwise in 0.8mL/min, keeps the temperature 3h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
The COD of dyeing waste water before handling through the present embodiment is 3000mg/L, and treated, and COD is 185mg/L, and COD is gone
Except rate is up to 93.83%.
Embodiment 3
A kind for the treatment of process of dyeing waste water, comprising the following steps:
Step 1, by benzoic acid, 1:900 is mixed by volume with dyeing waste water, and the mixing that 20wt% active carbon and diatomite is added is inhaled
It imports ultrasonic tank after attached dose to be ultrasonically treated, the condition of ultrasonic treatment is 1000W, 30min, the weight of active carbon and diatomite
Than for 1:0.5；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 9h, the concentration of dissolved oxygen is 4mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 30mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using 18 parts of polydimethyl diallyl ammonium chloride, water 36 in parts by weight
Part, 2 parts of 1,3 butylene glycol, 2 parts of polylactic acid, 2 parts of dodecyl sodium sulfate, 3 parts of montmorillonite, 5 parts of Sodium Polyacrylate, polyaluminum sulfate
13 parts of ferro-aluminum, 1.8 parts of acrylic acid, 7 parts of microorganism coagulant, 5 parts of carboxymethyl cellulose and 6 parts of disodium ethylene diamine tetraacetate systems
At.
The preparation method of above-mentioned FZC coagulant for treating sewage, comprising the following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 80 DEG C of heat preservation 40min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, is warming up to 40 DEG C, with
Acrylic acid is added dropwise in 0.5mL/min, keeps the temperature 3h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
The COD of dyeing waste water before handling through the present embodiment is 5000mg/L, and treated, and COD is 270mg/L, and COD is gone
Except rate is up to 94.6%.
Embodiment 4
A kind for the treatment of process of dyeing waste water, comprising the following steps:
Step 1, by benzoic acid, 1:1000 is mixed by volume with dyeing waste water, and the mixing of 30wt% active carbon and diatomite is added
It imports ultrasonic tank after adsorbent to be ultrasonically treated, the condition of ultrasonic treatment is 1000W, 20min, the weight of active carbon and diatomite
Amount is than being 1:0.7；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 12h, the concentration of dissolved oxygen is 5mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 40mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using 20 parts of polydimethyl diallyl ammonium chloride in parts by weight, water 40
Part, 5 parts of polyalcohol, 4 parts of polylactic acid, 4 parts of surfactant, 4 parts of montmorillonite, 6 parts of Sodium Polyacrylate, polymeric aluminum sulfate iron 15
Part, 2.5 parts of acrylic acid, 9 parts of microorganism coagulant, 6 parts of cellulose, 7 parts of disodium ethylene diamine tetraacetate are made.
The preparation method of above-mentioned FZC coagulant for treating sewage, comprising the following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 100 DEG C of heat preservation 30min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, is warming up to 50 DEG C, with
Acrylic acid is added dropwise in 1mL/min, keeps the temperature 2h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
The COD of dyeing waste water before handling through the present embodiment is 5000mg/L, and treated, and COD is 160mg/L, and COD is gone
Except rate is up to 96.8%.
Embodiment 5
The present embodiment and the difference of embodiment 3 are: not being ultrasonically treated in step 1.
A kind for the treatment of process of dyeing waste water, comprising the following steps:
Step 1, by benzoic acid, 1:900 is mixed by volume with dyeing waste water, and the mixing that 20wt% active carbon and diatomite is added is inhaled
It is stood after attached dose, the weight ratio of active carbon and diatomite is 1:0.5；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 9h, the concentration of dissolved oxygen is 4mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 30mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using 18 parts of polydimethyl diallyl ammonium chloride, water 36 in parts by weight
Part, 2 parts of 1,3 butylene glycol, 2 parts of polylactic acid, 2 parts of dodecyl sodium sulfate, 3 parts of montmorillonite, 5 parts of Sodium Polyacrylate, polyaluminum sulfate
13 parts of ferro-aluminum, 1.8 parts of acrylic acid, 7 parts of microorganism coagulant, 5 parts of carboxymethyl cellulose and 6 parts of disodium ethylene diamine tetraacetate systems
At.
The preparation method of above-mentioned FZC coagulant for treating sewage, comprising the following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 80 DEG C of heat preservation 40min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, is warming up to 40 DEG C, with
Acrylic acid is added dropwise in 0.5mL/min, keeps the temperature 3h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
The COD of dyeing waste water before handling through the present embodiment is 5000mg/L, and treated, and COD is 2321mg/L, and COD is gone
Except rate is up to 55.38%.
Embodiment 6
The present embodiment and the difference of embodiment 3 are: the coagulant being added in step 3 is polymeric aluminum sulfate iron, concentration 40mg/
L。
A kind for the treatment of process of dyeing waste water, comprising the following steps:
Step 1, by benzoic acid, 1:900 is mixed by volume with dyeing waste water, and the mixing that 20wt% active carbon and diatomite is added is inhaled
It imports ultrasonic tank after attached dose to be ultrasonically treated, the condition of ultrasonic treatment is 1000W, 30min, the weight of active carbon and diatomite
Than for 1:0.5；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 9h, the concentration of dissolved oxygen is 4mg/L；
Step 3, coagulant polymeric aluminium iron sulfate, additional amount 40mg/L are added in step 2 treated dyeing waste water；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
The COD of dyeing waste water before handling through the present embodiment is 5000mg/L, and treated, and COD is 1896mg/L, COD removal rate
Up to 62.08%.
Claims (9)
1. a kind for the treatment of process of dyeing waste water, it is characterised in that: the following steps are included:
Step 1, organic acid is mixed with dyeing waste water, the ultrasonic tank of importing is ultrasonically treated after 20-30wt% adsorbent is added；
Step 2, MBR processing will be carried out after the dyeing waste water filtering after step 1 ultrasonic treatment, when MBR treatment process hydraulic retention
Between be 4h-12h, the concentration of dissolved oxygen is 1mg/L-5mg/L；
Step 3, coagulant is added in step 2 treated dyeing waste water, the additional amount of coagulant is 20-40mg/L；
Step 4, the waste water after step 3 coagulating treatment is centrifuged, the dyeing waste water that can be obtained that treated；
Wherein, the coagulant used in step 3 is using polydimethyl diallyl ammonium chloride, water, polyalcohol, polylactic acid, table
Face activating agent, montmorillonite, Sodium Polyacrylate, polymeric aluminum sulfate iron, acrylic acid, microorganism coagulant, cellulose and ethylenediamine tetraacetic
Acetic acid disodium is made.
2. the treatment process of dyeing waste water according to claim 1, it is characterised in that: adsorbent is active carbon in step 1
With the mixture of diatomite, the weight ratio of active carbon and diatomite is 1:0.3-0.7.
3. the treatment process of dyeing waste water according to claim 1, it is characterised in that: in step 1 organic acid be benzoic acid,
The volume ratio of one of citric acid, tartaric acid or oxalic acid, organic acid and dyeing waste water is 1:800-1000.
4. the treatment process of dyeing waste water according to claim 1, it is characterised in that: the condition being ultrasonically treated in step 1
For 800-1000W, 20-30min.
5. the treatment process of dyeing waste water according to claim 1, it is characterised in that: the raw material of the coagulant is with weight
Part is calculated as: 10-20 parts of polydimethyl diallyl ammonium chloride, 25-40 parts of water, 2-5 parts of polyalcohol, 1-4 parts of polylactic acid, surface is living
2-4 parts of agent of property, 1-4 parts of montmorillonite, 2-6 parts of Sodium Polyacrylate, 7-15 parts of polymeric aluminum sulfate iron, 0.8-2.5 parts of acrylic acid, micro- life
4-9 parts of object coagulant, 2-6 parts of cellulose, 3-7 parts of disodium ethylene diamine tetraacetate.
6. the treatment process of dyeing waste water according to claim 5, it is characterised in that: the polyalcohol be neopentyl glycol,
One of pentaerythrite or 1,3 butylene glycol.
7. the treatment process of dyeing waste water according to claim 5, it is characterised in that: the surfactant is dodecane
Base sodium sulfonate.
8. the treatment process of dyeing waste water according to claim 5, it is characterised in that: the cellulose is hydroxy ethyl fiber
One of element, hydroxypropyl cellulose or carboxymethyl cellulose.
9. the treatment process of dyeing waste water according to claim 1, it is characterised in that: the preparation method packet of the coagulant
Include following steps:
Step 1, polydimethyl diallyl ammonium chloride is added in water, it is de- that polyalcohol, polylactic acid, surfactant, illiteracy is added
Soil is warming up to 80-100 DEG C of heat preservation 30-40min, is cooled to room temperature, obtains mixture A；
Step 2, under agitation, Sodium Polyacrylate, polymeric aluminum sulfate iron are added in mixture A, are warming up to 40-50 DEG C,
Acrylic acid is added dropwise with 0.5-1mL/min, keeps the temperature 2-3h, obtains mixture B；
Step 3, microorganism coagulant is added in water, cellulose, disodium ethylene diamine tetraacetate is added under stirring condition, dispersed,
Obtain mixture C；
Step 4, mixture C is added in mixture B, be spray-dried after ultrasonic treatment to get.
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Application publication date: 20191203 |