CN106242178A

CN106242178A - A kind of cloth dyeing industrial sewage processes technique

Info

Publication number: CN106242178A
Application number: CN201610734941.7A
Authority: CN
Inventors: 张伟
Original assignee: 张伟
Priority date: 2016-08-28
Filing date: 2016-08-28
Publication date: 2016-12-21

Abstract

The invention discloses a kind of cloth dyeing industrial sewage and process technique, with bentonite, meerschaum, ferric sulfate of polymerized silica, aluminium polychlorid, hydroxymethyl cellulose sodium, soybean protein, sodium sulfite, acid fiber by polylactic, 4 chlorine 2 aminoanisoles, dithiothreitol, DTT, oxalic acid, polymine, organosolv lignin, trihydroxyflavone, anisaldehyde, decolorising agent, flocculation aid is configured to composite treating agent, coordinate corresponding absorption, inorganic agent processes, anaerobic treatment, photochemical catalytic oxidation, hypochlorite oxidation, aeration, electricity flocculation and the electrically water treatment technology such as floating, make COD of sewage cr after treatment, BOD5, colourity all significantly reduces, disclosure satisfy that the requirement of environment protection standard, there is preferable application prospect.

Description

A kind of cloth dyeing industrial sewage processes technique

Technical field

The present invention relates to trade effluent innoxious process for treating field, be related specifically at a kind of cloth dyeing industrial sewage Science and engineering skill.

Background technology

Dyeing is the industry that textile industry water consumption is bigger, and water participates in the whole dyeing and finishing course of processing as medium.Printing and dyeing dirt The water water yield is big, and colourity is high, complicated component, containing dyestuff, slurry, auxiliary agent, oil preparation, soda acid in sewage, and fiber impurity and inorganic salt Deng, in dye structure, nitro and the heavy metal element such as amine compound and copper, chromium, zinc, arsenic have bigger bio-toxicity, seriously Pollute environment.According to statistics, within 2010, in national each industrial trade, textile printing and dyeing industry quantity of wastewater effluent is 12.75 tons, occupies complete The 5th of state's industrial wastewater discharge amount, accounts for the 6% of whole nation industrial wastewater discharge amount.Show according to relevant information, Taihu Lake basin In trade effluent COD (CODcr) discharge capacity, about 30% derives from textile printing and dyeing industry.The pollution problem of dyeing and printing sewage is Become the social problem of extensive concern.

Dyeing and printing sewage is mainly by desizing sewage, boiling-off sewage, bleaching effluent, mercerising sewage, dyeing waste and stamp sewage Composition, has that the water yield is big, concentration is high, variation water quality is big, content of organics is high, intractability is relatively big, part of contaminated water has containing poisonous The features such as pest matter .Owing to dyeing and printing sewage is containing substantial amounts of organic pollution, enters water body and will consume dissolved oxygen, destroy Ecology Balance, jeopardizes Fish and other hydrobiological existence.Demersal Organic substance, can produce hydrogen sulfide etc. because of anaerobic digestion Harmful gas, adverse condition.The color and luster of dyeing and printing sewage is deep simultaneously, has a strong impact on receiving water body outward appearance, and with general biochemistry Method is difficult to remove.Coloured water body also can affect the transmission of daylight, is unfavorable for the growth of aquatic organism.Meanwhile, dyeing and printing sewage major part Meta-alkalescence, enters farmland, can make saline Land；The sulfate of dyeing waste can be converted into sulfuration under the reducing condition of soil Thing, produces hydrogen sulfide.

Dyeing and printing sewage is the organic sewage of the complicated component based on organic contamination, and the main object of process is BOD5, no Easily biological-degradable or biodegradation rate Organic substance slowly, basicity, coloring matter and a small amount of noxious substance.Although printing and dyeing dirt The biodegradability of water is the most poor, but in addition to the most special dyeing and printing sewage (such as pure chemical fiber textile dyeing), still belongs to and can biological drop The organic sewage solved.Its processing method, based on biological treatment, needs to be aided with pretreatment and the physical chemistry degree of depth of necessity simultaneously Facture.In conventional treatment technology, activated carbon adsorption processing cost is high, and regenerates difficulty；Membrane separation technique is disposably thrown Money is big, and technical difficulty is big, and membranous system cleans difficulty, and the backwash water yield is big, and operating cost is high, and regular job is complicated, runs and ties up Protect costly；Photocatalytic degradation speed is fast, does not produce secondary pollution, but titania photocatalyst need to utilize ultraviolet light as energy Amount energy consumption is high, and the photocatalyst response rate is low simultaneously, all limits photocatalytic oxidation application in Pollutant Treatment；Electrolysis Or the technique such as plasma-catalytic oxidation to there is again energy consumption high, fluctuation of service, through engineering approaches application difficult and and traditional handicraft It is difficult to the problems such as combination.Although it is fast that catalytic ozonation method has degradation speed, flow process is simple, does not produce the excellent of secondary pollution Point, but there is also that energy consumption is high, ozone utilization rate is low, catalyst activity is relatively low and the problem such as catalyst recycling difficulty.

Summary of the invention

For solving above-mentioned technical problem, the present invention provides a kind of cloth dyeing industrial sewage to process technique, with bentonite, sea Afrodite, ferric sulfate of polymerized silica, aluminium polychlorid, hydroxymethyl cellulose sodium, soybean protein, sodium sulfite, acid fiber by polylactic, 4-are chloro- 2-aminoanisole, dithiothreitol, DTT, oxalic acid, polymine, organosolv lignin, trihydroxyflavone, anisaldehyde, decolorising agent, Flocculation aid is configured to composite treating agent, coordinates corresponding absorption, inorganic agent process, anaerobic treatment, photochemical catalytic oxidation, sodium hypochlorite Oxidation, aeration, electricity flocculation and the electric water treatment technology such as floating so that waste water COD cr after treatment, BOD5, colourity are the most notable Reduce, it is possible to meet the requirement of environment protection standard, there is preferable application prospect.

The purpose of the present invention can be achieved through the following technical solutions:

A kind of cloth dyeing industrial sewage processes technique, comprises the following steps:

(1) trade effluent is entered adsorption tank, add appropriate cinder and carry out adsorption treatment, subsequently sewage is removed by grid solid Body foreign material, are re-fed in sedimentation tank carrying out precipitation process；

(2) collect the supernatant after precipitation process, add composite treating agent according to the dosage of 20～30mg/L sewage, described multiple Close inorganic agent to be made up of following component: bentonite 40-50 part, meerschaum 35-45 part, ferric sulfate of polymerized silica 35-45 part, polymerization chlorine Change aluminum 30-40 part, hydroxymethyl cellulose sodium 25-35 part, soybean protein 25-35 part, sodium sulfite 20-30 part, acid fiber by polylactic 15-25 part, 4-chloro-2-aminoanisole 10-12 part, dithiothreitol, DTT 8-10 part, oxalic acid 8-10 part, polymine 5-7 part, Organosolv lignin 3-5 part, trihydroxyflavone 1-3 part, anisaldehyde 1-3 part, decolorising agent 10-16 part, flocculation aid 15-25 part, reaction Time is 30～50min；

(3) sewage after composite treating agent processes is drained into anaerobic pond and carry out anaerobic treatment, drain into photochemical catalytic oxidation device subsequently In carry out Treatment by Photocatalysis Oxidation；

(4) sewage after Treatment by Photocatalysis Oxidation entering hypochlorite oxidation pond, sewage pH is 7～8 in regulation, puts into time chlorine Acid sodium, the response time is 0.5～2h, and sewage disposal system carried out aeration agitation；

(5) sewage transport after Air Exposure is to electricity flocculation-air floating reactor, carries out electric flocculation and the most floating, the electric electrode that flocculates For Soluble aluminum electrode, the most floating electrode is board-like insoluble nano-titanium electrode, and pH when reactor runs controls 5～8；Work It is 0.3～0.5Mpa as pressure；Work water temperature 35～45 DEG C；

(6) sewage after electricity flocculation-air floating processes is sent into secondary sedimentation tank, to be precipitated completely after, supernatant is discharged, receives Collection deposit, completes sewage disposal process.

Preferably, any one in polyacrylamide, sodium silicate, the kieselguhr of the flocculation aid in described composite treating agent Kind.

Preferably, in described step (1), the particle diameter of cinder is 1.5～2.5mm.

Preferably, in described step (3), the reaction condition of photochemical catalytic oxidation is: under ultraviolet light irradiates, logical in sewage Entering photocatalyst to react, the response time is 30～50min.It is further preferred that described photocatalyst is by titanium propanolate, molybdenum Through calcining and be fixed on Silica Surface and make after acid ammonium, ferrous sulfate mixing.

Preferably, the sewage after electricity flocculation and electricity air-flotation process is carried out sterilizing process, is re-fed into secondary precipitation Pond.It is further preferred that the condition that described sterilizing processes is: use chlorine, chlorine dioxide or hypochlorite disinfectant, during contact Between 60～80min, chlorine dosage is 13～15mg/L.

Compared with prior art, it has the beneficial effect that the present invention

(1) the cloth dyeing industrial sewage of the present invention processes technique, with bentonite, meerschaum, ferric sulfate of polymerized silica, polyaluminium Aluminum, hydroxymethyl cellulose sodium, soybean protein, sodium sulfite, acid fiber by polylactic, 4-chloro-2-aminoanisole, dithiothreitol, DTT, Oxalic acid, polymine, organosolv lignin, trihydroxyflavone, anisaldehyde, decolorising agent, flocculation aid are configured to composite treating agent, join Close corresponding absorption, inorganic agent process, anaerobic treatment, photochemical catalytic oxidation, hypochlorite oxidation, aeration, electricity flocculation and electrically float Etc. water treatment technology so that waste water COD cr after treatment, BOD5, colourity all significantly reduce, it is possible to meet wanting of environment protection standard Ask, there is preferable application prospect.

(2) the cloth dyeing industrial sewage of the present invention processes raw materials used cheap, the technique of technique and has universality, is suitable to big Technical scaleization is used, practical.

Detailed description of the invention

Below in conjunction with specific embodiment, the technical scheme of invention is described in detail.

Embodiment 1

(1) trade effluent being entered adsorption tank, add appropriate cinder and carry out adsorption treatment, the particle diameter of cinder is 1.5mm, subsequently will Sewage removes solid sundries by grid, is re-fed in sedimentation tank carrying out precipitation process；

(2) collect the supernatant after precipitation process, add composite treating agent, described compound place according to the dosage of 20mg/L sewage Reason agent is made up of following component: bentonite 40 parts, meerschaum 35 parts, ferric sulfate of polymerized silica 35 parts, aluminium polychlorid 30 parts, hydroxyl first Base cellulose receive 25 parts, soybean protein 25 parts, sodium sulfite 20 parts, acid fiber by polylactic 15 parts, 4-chloro-2-aminoanisole 10 Part, dithiothreitol, DTT 8 parts, oxalic acid 8 parts, polymine 5 parts, organosolv lignin 3 parts, trihydroxyflavone 1 part, anisaldehyde 1 part, Decolorising agent 10 parts, polyacrylamide 15 parts, the response time is 30min；

(3) sewage after composite treating agent processes is drained into anaerobic pond and carry out anaerobic treatment, drain into photochemical catalytic oxidation device subsequently In carry out Treatment by Photocatalysis Oxidation, the reaction condition of photochemical catalytic oxidation is: ultraviolet light irradiate under, in sewage, be passed through photocatalysis Agent is reacted, photocatalyst by after titanium propanolate, ammonium molybdate, ferrous sulfate mixing through calcining and be fixed on Silica Surface and make Becoming, the response time of photochemical catalytic oxidation is 30min；

(4) sewage after Treatment by Photocatalysis Oxidation entering hypochlorite oxidation pond, sewage pH is 7 in regulation, puts into hypochlorous acid Sodium, the response time is 0.5h, and sewage disposal system carried out aeration agitation；

(5) sewage transport after Air Exposure is to electricity flocculation-air floating reactor, carries out electric flocculation and the most floating, the electric electrode that flocculates For Soluble aluminum electrode, the most floating electrode is board-like insoluble nano-titanium electrode, and pH when reactor runs controls 5；Work Pressure is 0.3Mpa；Work water temperature 35 DEG C；

(6) sewage after electricity flocculation-air floating processes being carried out sterilizing process, the condition that sterilizing processes is: use Chlorine, chlorine dioxide or hypochlorite disinfectant, time of contact 60min, chlorine dosage is 13mg/L, is subsequently sent to secondary sedimentation tank, treats After precipitation is complete, supernatant is discharged, collect deposit, complete sewage disposal process.

The supernatant water quality detection result discharged after treatment by using the treatment method is as shown in table 1.

Embodiment 2

(1) trade effluent being entered adsorption tank, add appropriate cinder and carry out adsorption treatment, the particle diameter of cinder is 2mm, subsequently by dirt Water removes solid sundries by grid, is re-fed in sedimentation tank carrying out precipitation process；

(2) collect the supernatant after precipitation process, add composite treating agent, described compound place according to the dosage of 25mg/L sewage Reason agent is made up of following component: bentonite 45 parts, meerschaum 40 parts, ferric sulfate of polymerized silica 40 parts, aluminium polychlorid 35 parts, hydroxyl first Base cellulose receive 30 parts, soybean protein 30 parts, sodium sulfite 25 parts, acid fiber by polylactic 20 parts, 4-chloro-2-aminoanisole 11 Part, dithiothreitol, DTT 9 parts, oxalic acid 9 parts, polymine 6 parts, organosolv lignin 4 parts, trihydroxyflavone 2 parts, anisaldehyde 2 parts, Decolorising agent 13 parts, sodium silicate 20 parts, the response time is 40min；

(3) sewage after composite treating agent processes is drained into anaerobic pond and carry out anaerobic treatment, drain into photochemical catalytic oxidation device subsequently In carry out Treatment by Photocatalysis Oxidation, the reaction condition of photochemical catalytic oxidation is: ultraviolet light irradiate under, in sewage, be passed through photocatalysis Agent is reacted, photocatalyst by after titanium propanolate, ammonium molybdate, ferrous sulfate mixing through calcining and be fixed on Silica Surface and make Becoming, the response time of photochemical catalytic oxidation is 40min；

(4) sewage after Treatment by Photocatalysis Oxidation entering hypochlorite oxidation pond, sewage pH is 7.5 in regulation, puts into time chlorine Acid sodium, the response time is 1 h, and sewage disposal system carried out aeration agitation；

(5) sewage transport after Air Exposure is to electricity flocculation-air floating reactor, carries out electric flocculation and the most floating, the electric electrode that flocculates For Soluble aluminum electrode, the most floating electrode is board-like insoluble nano-titanium electrode, and pH when reactor runs controls 6；Work Pressure is 0.4Mpa；Work water temperature 40 DEG C；

(6) sewage after electricity flocculation-air floating processes being carried out sterilizing process, the condition that sterilizing processes is: use Chlorine, chlorine dioxide or hypochlorite disinfectant, time of contact 70min, chlorine dosage is 14 mg/L, is subsequently sent to secondary sedimentation tank, treats After precipitation is complete, supernatant is discharged, collect deposit, complete sewage disposal process.

Embodiment 3

(1) trade effluent being entered adsorption tank, add appropriate cinder and carry out adsorption treatment, the particle diameter of cinder is 2.5mm, subsequently will Sewage removes solid sundries by grid, is re-fed in sedimentation tank carrying out precipitation process；

(2) collect the supernatant after precipitation process, add composite treating agent, described compound place according to the dosage of 30mg/L sewage Reason agent is made up of following component: bentonite 50 parts, meerschaum 45 parts, ferric sulfate of polymerized silica 45 parts, aluminium polychlorid 40 parts, hydroxyl first Base cellulose receive 35 parts, soybean protein 35 parts, sodium sulfite 30 parts, acid fiber by polylactic 25 parts, 4-chloro-2-aminoanisole 12 Part, dithiothreitol, DTT 10 parts, oxalic acid 10 parts, polymine 7 parts, organosolv lignin 5 parts, trihydroxyflavone 3 parts, anisaldehyde 3 Part, decolorising agent 16 parts, 25 parts of kieselguhr, the response time is 50min；

(3) sewage after composite treating agent processes is drained into anaerobic pond and carry out anaerobic treatment, drain into photochemical catalytic oxidation device subsequently In carry out Treatment by Photocatalysis Oxidation, the reaction condition of photochemical catalytic oxidation is: ultraviolet light irradiate under, in sewage, be passed through photocatalysis Agent is reacted, photocatalyst by after titanium propanolate, ammonium molybdate, ferrous sulfate mixing through calcining and be fixed on Silica Surface and make Becoming, the response time of photochemical catalytic oxidation is 50min；

(4) sewage after Treatment by Photocatalysis Oxidation entering hypochlorite oxidation pond, sewage pH is 8 in regulation, puts into hypochlorous acid Sodium, the response time is 2h, and sewage disposal system carried out aeration agitation；

(5) sewage transport after Air Exposure is to electricity flocculation-air floating reactor, carries out electric flocculation and the most floating, the electric electrode that flocculates For Soluble aluminum electrode, the most floating electrode is board-like insoluble nano-titanium electrode, and pH when reactor runs controls 8；Work Pressure is 0.5Mpa；Work water temperature 45 DEG C；

(6) sewage after electricity flocculation-air floating processes being carried out sterilizing process, the condition that sterilizing processes is: use Chlorine, chlorine dioxide or hypochlorite disinfectant, time of contact 80min, chlorine dosage is 15mg/L, is subsequently sent to secondary sedimentation tank, treats After precipitation is complete, supernatant is discharged, collect deposit, complete sewage disposal process.

Embodiment 4

(2) collect the supernatant after precipitation process, add composite treating agent, described compound place according to the dosage of 30mg/L sewage Reason agent is made up of following component: bentonite 40 parts, meerschaum 45 parts, ferric sulfate of polymerized silica 35 parts, aluminium polychlorid 40 parts, hydroxyl first Base cellulose receive 25 parts, soybean protein 35 parts, sodium sulfite 20 parts, acid fiber by polylactic 25 parts, 4-chloro-2-aminoanisole 10 Part, dithiothreitol, DTT 10 parts, oxalic acid 8 parts, polymine 7 parts, organosolv lignin 3 parts, trihydroxyflavone 3 parts, anisaldehyde 1 Part, decolorising agent 16 parts, sodium silicate 15 parts, the response time is 50min；

(4) sewage after Treatment by Photocatalysis Oxidation entering hypochlorite oxidation pond, sewage pH is 8 in regulation, puts into hypochlorous acid Sodium, the response time is 0.5h, and sewage disposal system carried out aeration agitation；

(5) sewage transport after Air Exposure is to electricity flocculation-air floating reactor, carries out electric flocculation and the most floating, the electric electrode that flocculates For Soluble aluminum electrode, the most floating electrode is board-like insoluble nano-titanium electrode, and pH when reactor runs controls 8；Work Pressure is 0.3Mpa；Work water temperature 45 DEG C；

(6) sewage after electricity flocculation-air floating processes being carried out sterilizing process, the condition that sterilizing processes is: use Chlorine, chlorine dioxide or hypochlorite disinfectant, time of contact 60min, chlorine dosage is 15mg/L, is subsequently sent to secondary sedimentation tank, treats After precipitation is complete, supernatant is discharged, collect deposit, complete sewage disposal process.

Comparative example 1

(2) collect the supernatant after precipitation process, add composite treating agent, described compound place according to the dosage of 20mg/L sewage Reason agent is made up of following component: bentonite 40 parts, meerschaum 35 parts, ferric sulfate of polymerized silica 35 parts, aluminium polychlorid 30 parts, hydroxyl first Base cellulose receive 25 parts, soybean protein 25 parts, sodium sulfite 20 parts, acid fiber by polylactic 15 parts, 4-chloro-2-aminoanisole 10 Part, oxalic acid 8 parts, polymine 5 parts, organosolv lignin 3 parts, trihydroxyflavone 1 part, decolorising agent 10 parts, polyacrylamide 15 Part, the response time is 30min；

Comparative example 2

(2) collect the supernatant after precipitation process, add composite treating agent, described compound place according to the dosage of 30mg/L sewage Reason agent is made up of following component: bentonite 50 parts, meerschaum 45 parts, ferric sulfate of polymerized silica 45 parts, aluminium polychlorid 40 parts, hydroxyl first Base cellulose receive 35 parts, soybean protein 35 parts, sodium sulfite 30 parts, 4-chloro-2-aminoanisole 12 parts, dithiothreitol, DTT 10 Part, oxalic acid 10 parts, polymine 7 parts, organosolv lignin 5 parts, anisaldehyde 3 parts, decolorising agent 16 parts, 25 parts of kieselguhr, instead It is 50min between Ying Shi；

Table 1

　 CODcr(mg/L) BOD5(mg/L) Colourity Embodiment 1 57.1 19.7 25 Embodiment 2 52.5 12.4 21 Embodiment 3 55.4 14.1 23 Embodiment 4 56.9 18.0 28 Comparative example 1 88.4 36.5 40 Comparative example 2 91.6 40.3 47

The cloth dyeing industrial sewage of the present invention processes technique, with bentonite, meerschaum, ferric sulfate of polymerized silica, aluminium polychlorid, hydroxyl Methylcellulose is received, soybean protein, sodium sulfite, acid fiber by polylactic, 4-chloro-2-aminoanisole, dithiothreitol, DTT, oxalic acid, Polymine, organosolv lignin, trihydroxyflavone, anisaldehyde, decolorising agent, flocculation aid are configured to composite treating agent, coordinate phase The absorption answered, inorganic agent process, anaerobic treatment, photochemical catalytic oxidation, hypochlorite oxidation, aeration, electricity flocculation and the water such as the most floating Process technique so that waste water COD cr after treatment, BOD5, colourity all significantly reduce, it is possible to meet the requirement of environment protection standard, There is preferable application prospect.Meanwhile, the processing method of the present invention is raw materials used inexpensively, technique has universality, is suitable to advise greatly Mould industrialization is used, practical.

The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this Equivalent structure or equivalence flow process that bright description is made convert, or are directly or indirectly used in other relevant technology necks Territory, is the most in like manner included in the scope of patent protection of the present invention.

Claims

1. a cloth dyeing industrial sewage processes technique, it is characterised in that comprise the following steps:

Cloth dyeing industrial sewage the most according to claim 1 processes technique, it is characterised in that: in described composite treating agent Any one in polyacrylamide, sodium silicate, the kieselguhr of flocculation aid.

Cloth dyeing industrial sewage the most according to claim 1 processes technique, it is characterised in that: coal in described step (1) The particle diameter of slag is 1.5～2.5mm.

Cloth dyeing industrial sewage the most according to claim 1 processes technique and it is characterized in that, in described step (3), light is urged Change oxidation reaction condition be: ultraviolet light irradiate under, in sewage, be passed through photocatalyst react, the response time be 30～ 50min。

Cloth dyeing industrial sewage the most according to claim 4 processes technique, it is characterised in that: described photocatalyst is by titanium Through calcining and be fixed on Silica Surface and make after the mixing of propyl propionate, ammonium molybdate, ferrous sulfate.

6. process technique according to the cloth dyeing industrial sewage described in any one of Claims 1 to 5, it is characterised in that: will be through electricity Sewage after flocculation and electricity air-flotation process carries out sterilizing process, is re-fed into secondary sedimentation tank.

Cloth dyeing industrial sewage the most according to claim 6 processes technique, it is characterised in that described sterilizing processes Condition be: using chlorine, chlorine dioxide or hypochlorite disinfectant, time of contact 60～80min, chlorine dosage is 13～15mg/L.