CN103570171A - Equipment for recovering high-salinity high-chroma dyeing wastewater - Google Patents
Equipment for recovering high-salinity high-chroma dyeing wastewater Download PDFInfo
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- CN103570171A CN103570171A CN201310467833.4A CN201310467833A CN103570171A CN 103570171 A CN103570171 A CN 103570171A CN 201310467833 A CN201310467833 A CN 201310467833A CN 103570171 A CN103570171 A CN 103570171A
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Abstract
The invention discloses equipment for recovering high-salinity high-chroma dyeing wastewater. The equipment comprises a regulating tank, a first advanced oxidation device, a second advanced oxidation device, a filter and a purification storage tank which are successively connected; the chroma of treated water can reach 30 times or below, so that the standard of dyeing reuse water is met; and the salt content in the waste is basically unchanged, and the requirements for production and reuse can be met on the basis of adding a small amount of salt. Thus, the problem that high-salinity wastewater is difficult to treat for dyeing enterprises is solved, and a low-cost, efficient and stable solution way is also provided for reuse of high-salinity wastewater.
Description
The application is dividing an application of application number 201210289827X, August 15 2012 applying date, denomination of invention " a kind of recovery process and equipment thereof of high salinity high chroma dyeing waste water ".
Technical field
The present invention relates to a kind of recovery system of waste water, specifically a kind of recovery system of high salinity high chroma dyeing waste water, belongs to waste water reclamation field.
Background technology
Due to the puzzlement of " water crisis ", many countries and regions are actively set about consolidating and are strengthened consciousness of saving water and the regeneration of research trade effluent and reuse work, by used water reuse after treatment in Industrial processes.In textile industry, can produce various waste water, wherein serious with dyeing waste water.Owing to containing a large amount of residual dyes and auxiliary agent in dyeing waste water, so chroma in waste water is high.The colourity of dyeing waste water has been brought very large difficulty to wastewater treatment and renovation, becomes the obstacle of realizing waste water reclaiming.
Before the eighties in last century, the biodegradability of China's dyeing waste water is higher, and CODcr concentration is everlasting below 800mg/L, adopts traditional biology and materialization joint processing system, and water outlet can reach emission standard.In recent decades, dyeing waste water water quality has a very large change.Traditional treatment method of printing and dying wastewater, as absorption, suspension, filtration, coagulation etc., although to have equipment simple, the advantage of easy and simple to handle and technical maturity, but this class treatment process is normally transferred to solid phase or gas phase by organism from liquid phase, not only do not eliminate organic pollutant and chemical agent consumption completely, and cause refuse to pile up and secondary pollution; Biological process can only be removed the BOD in dyeing waste water, and for COD, particularly the removal effect of poisonous hardly degraded organic substance and colourity is not obvious.
Now, there is multiple dyeing waste water advanced treatment technology, for example, electrochemical process have equipment little, take up an area less, the advantage such as operational management is simple, CODcr clearance is high and decolouring is good, but precipitation growing amount and electrode materials consumption are larger, and working cost is higher.In addition, membrane technique development is very rapid, and from ultrafiltration to reverse osmosis, effect is good, and gordian technique is also mature on the whole, and has been widely used in the fields such as direct drinking water, sea water desaltination, high purity product production.But, the drawbacks limit existing due to tunica fibrosa itself its widespread use in the advanced treatment of trade effluent and sanitary wastewater.One, the life-span of mould material and membrane module cost costliness and organic membrane is not long; Its two, reach the target of high efficiency separation, the effective pore radius of film is minimum, so operation energy consumption is very high.Because the reuse amount after wastewater treatment is very big, and therefore the water quality standard of reuse water can process waste water with membrane technique a little less than corresponding water water quality standard aspect many, and huge investment and great number operation, maintenance cost have limited its feasibility.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of recovery system of high salinity high chroma dyeing waste water, not only solved the unmanageable difficult problem of printing and dyeing enterprise high salinity waste water, returning high salinity waste water reuse provides a set of cost low, efficient, stable solution route.
Technical scheme of the present invention is:
A recovery process for high salinity high chroma dyeing waste water, comprises the following steps:
(1) preliminary acid adjusting: by Waste Water Centralized in wastewater equalization pond, add the first medicine acid, regulate pH to acid, with gas blower, waste water is carried out to aeration agitation simultaneously, gas-water ratio keeps 3:1, waste water in equalizing tank is tentatively regulated, and the object of all measuring to reach homogeneous, is beneficial to subsequent disposal; Chemical feeding quantity need adopt suitable chemical feeding quantity according to dyeing waste water water quality, needs certain hour reaction, and mixes homogeneous;
(2) tentatively oxidation: waste water in equalizing tank is transported in the first advanced catalytic oxidation device, adds the second medicine Fe
2+with the 3rd medicine H
2o
2, according to dyeing waste water water quality, adopting suitable chemical feeding quantity, minimum chemical feeding quantity is: 0.8g/L Fe
2+, 1.2ml/L H
2o
2, reaction times 30min, carries out oxygenolysis by the dyestuff that contains chromophoric group in waste water, removes most of coloring matter and organism, removes colourity; Meanwhile, in the first advanced oxidation device, be provided with some TiO
2layer, adjacent TiO
2between layer, be provided with ultraviolet tube, improved oxidation effectiveness;
(3) secondary oxidation: the waste water after the first advanced oxidation device is processed enters intermediate pool precipitation, and supernatant liquor rises to the second advanced oxidation device through pump, to the further oxygenolysis of coloring matter residual in waste water; The second advanced oxidation device is provided with some ultraviolet tubes and TiO
2coating, UV-lamp to device internal irradiation, improves catalyzed oxidation effect, TiO by ultraviolet lamp hole
2coating promotes ozone oxidation to decompose, and improves catalyzed oxidation effect; Reaction times, more long-acting fruit was better, and the reaction times is decided to be 30min the best;
(4) filter: the waste water after the second advanced oxidation device is processed is flow to sandfiltration pot, flow 10m3/h, filtering velocity 5m/h, waste water after filtration, is removed suspended substance and throw out in waste water in sandfiltration pot; After sandfiltration pot operation certain hour, need to carry out back flushing.Water after sand filtration enters filtration with manganese sand device, flow 10m3/h, and filtering velocity 8m/h, except the iron ion in anhydrating, completes waste water decoloring and purifies.After filtration with manganese sand device operation certain hour, need to carry out back flushing.
Water after purification is stored in and purifies in storage tank, for production and application.
A device for above-mentioned high salinity high chroma dyeing waste water recovery process, comprises connected successively equalizing tank, the first advanced oxidation device, the second advanced oxidation device, strainer and purification storage tank;
The first described advanced oxidation device is provided with inside and outside two layers of walls, and described inner layer wall inside is provided with mixing reactor, and the bottom opening of described inner layer wall also communicates with described outer wall; Between described inside and outside two layers of walls, be from bottom to top alternately provided with successively some TiO
2layer and ultraviolet tube, from bottom to top pass through each layer of equally distributed TiO successively through the reacted water outlet of mixing reactor
2the irradiation of layer and ultraviolet tube; The top of the first described advanced oxidation device is provided with effluent trough.
Described mixing reactor is connected with described equalizing tank by waste water lifting pipeline, and described waste water lifting pipeline is provided with waste water lifting pump;
Described mixing reactor is connected with the 3rd medicine chest by drug feeding pipeline;
Described waste water lifting pipeline is connected with the second medicine chest through drug feeding pipeline, after the drug feeding pipeline tie point of the second medicine chest, is provided with line mixer, for the second medicine is mixed with waste water.
The second described advanced oxidation device comprises housing, and described inner walls is provided with TiO
2coating, described housing wall is provided with some ultraviolet lamp holes, and described ultraviolet lamp hole is evenly distributed on housing, and the UV-lamp being arranged on housing is passed through ultraviolet lamp hole to the internal irradiation of housing;
The top of described housing is provided with recirculated water water outlet and water purification water outlet, and the bottom of described housing is provided with raw water inlet; The bottom of described housing is provided with sewage draining exit.
Further, the bottom of described housing is also provided with inspection window and support, and operator can enter the second advanced oxidation device from inspection window, to installing inside, checks.
Further, the outside of described housing is provided with the communication apparatus that is communicated with described recirculated water water outlet and raw water inlet, and described communication apparatus comprises pipeline and is arranged on the water pump on described pipeline.
Described equalizing tank is provided with blower unit;
Between the first described advanced oxidation device and the second advanced oxidation device, be provided with intermediate pool;
Described strainer comprises sandfiltration pot and filtration with manganese sand device.
Described sandfiltration pot comprises the first tank body, described the first tank body top is provided with sandfiltration pot water inlet pipe, and described the first tank base is provided with sandfiltration pot rising pipe, and described the first tank base one side is provided with sandfiltration pot spigot discharge, convenient by filtrate removal, described the first tank body lower part is also provided with sandfiltration pot pillar.Described sandfiltration pot inside is provided with quartz sand and pebbles, top quartz sand particle size 2-4mm, thick 1.2m, middle part quartz sand particle size 4-8mm, thick 0.3m, bottom quartz sand particle size 8-16mm, thick 0.3m, pebbles footpath, bottom 16-32mm, thick 0.25m; Be preferably top quartz sand particle size 3mm, thick 1.2m, middle part quartz sand particle size 6mm, thick 0.3m, bottom quartz sand particle size 12mm, thick 0.3m, pebbles footpath, bottom 24mm, thick 0.25m.
Described filtration with manganese sand device comprises the second tank body, described the second tank body top is provided with filtration with manganese sand device water inlet pipe, filtration with manganese sand device venting port and joint hinge, described the second tank base is provided with filtration with manganese sand device rising pipe, described the second tank base one side is provided with filtration with manganese sand device spigot discharge, convenient by filtrate removal, described the second tank body lower part is provided with filtration with manganese sand device pillar.The inside of described filtration with manganese sand device is provided with manganese sand and quartz sand, manganese sand grains footpath, top 1-5mm, thick 1.5m, middle part quartz sand particle size 2-4mm, thick 0.35m, bottom quartz sand particle size 4-8mm, thick 0.35m; Be preferably manganese sand grains footpath, top 3mm, thick 1.5m, middle part quartz sand particle size 3mm, thick 0.35m, bottom quartz sand particle size 6mm, thick 0.35m.
By the second advanced oxidation device water out, through sandfiltration pot water inlet pipe, enter sandfiltration pot, through quartz sand and pebbles, filter, suspended substance in water is removed, water outlet is flowed out and is entered filtration with manganese sand device by filtration with manganese sand device water inlet pipe by sandfiltration pot rising pipe, through manganese sand, remove the iron in anhydrating, the quartz sand of lower floor further, except anhydrating middle suspended substance, guarantees effluent quality.
The invention has the advantages that: the treatment process of whole process using advanced oxidation series connection, compare with simple Physical or chemical Treatment, reliable, treatment effect good, water quality colourity after art breading of the present invention can reach below 30 times, reached printing and dyeing reuse water standard, salt content in water is substantially constant, can on the basis of adding a small amount of salinity, meet production reuse requirement.Not only solved the unmanageable difficult problem of printing and dyeing enterprise high salinity waste water, returning high salinity waste water reuse provides a set of cost low, efficient, stable solution route.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the connection diagram of retrieving arrangement in the embodiment of the present invention;
Fig. 2 is the structural representation of the first advanced oxidation device in the embodiment of the present invention;
Fig. 3 is the structural representation of the second advanced oxidation device in the embodiment of the present invention;
Fig. 4 is the structural representation of sandfiltration pot in the embodiment of the present invention;
Fig. 5 is the structural representation of filtration with manganese sand device in the embodiment of the present invention;
In figure: 1-equalizing tank, 2-the first advanced oxidation device, 3-intermediate pool, 4-the second advanced oxidation device, 5-sandfiltration pot, 6-filtration with manganese sand device, 7-purifies storage tank, 8-blower unit, 9-waste water lifting pump, 10-the second medicine chest, 11-line mixer, 12-the 3rd medicine chest, 13-effluent trough, 14-TiO
2layer, 15-ultraviolet tube, 16-mixing reactor, 17-housing, 18-ultraviolet ray lamp hole, 19-recirculated water water outlet, 20-water purification water outlet, 21-raw water inlet, 22-sewage draining exit, 23-inspection window, 24-support, 25-sandfiltration pot water inlet pipe, 26-sandfiltration pot rising pipe, 27-sandfiltration pot spigot discharge, 28-sandfiltration pot pillar, 29-filtration with manganese sand device water inlet pipe, 30-venting port, 31-joint hinge, 32-filtration with manganese sand device rising pipe, 33-filtration with manganese sand device spigot discharge, 34-filtration with manganese sand device pillar.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Except as otherwise noted, the mark adopting in the present invention is weight number.
Embodiment 1
A recovery process for high salinity high chroma dyeing waste water, comprises the following steps:
(1) after the high salinity waste water producing in dyeing process collects, enter in wastewater equalization pond 1, add the first medicine acid, for example hydrochloric acid, regulate pH=6, by blower unit 8, the waste water in equalizing tank 1 is carried out to aeration agitation, gas-water ratio keeps 3:1, the object of all measuring to reach homogeneous;
(2) waste water in equalizing tank 1 is promoted to the first advanced oxidation device 2 via waste water lifting pump 9, dissolves the second medicine Fe
2+, the 3rd medicine H
2o
2together with after mixing in line mixer 11 with waste water, enter mixing reactor 16, chemical feeding quantity is: 0.8g/L Fe
2+, 1.2ml/L H
2o
2, reaction times 30min, the TiO in the first advanced oxidation device 2
2under the catalysis of layer 14, ultraviolet tube 15, the oxidized decomposition of pollutent in waste water;
(3) then waste water flows into the second advanced oxidation device 4, the second advanced oxidation devices 4 from effluent trough 13 through raw water inlet 21 and is provided with some ultraviolet tubes and TiO
2coating, ultraviolet ray improves catalyzed oxidation effect, TiO
2coating promotes ozone oxidation to decompose, and improves catalyzed oxidation effect, and the reaction times is 30min, and UV-lamp is the internal irradiation to housing 17 by ultraviolet lamp hole 18, at ultraviolet ray and TiO
2under the catalysis of coating, waste water is further oxided decolouring;
(4) water purification flows in sandfiltration pot 5 through water outlet 20, flow 10m3/h, and filtering velocity 5m/h utilizes quartz sand particle that suspended substance in water is held back to purify water in sandfiltration pot 5.After sandfiltration pot 5 operation certain hours, need to carry out back flushing.Sandfiltration pot 5 water outlets flow into filtration with manganese sand device 6, flow 10m3/h, and filtering velocity 8m/h utilizes manganese sand that the iron in water is removed in filtration with manganese sand device 6, further purifies water.After filtration with manganese sand device 6 operation certain hours, need to carry out back flushing.6 water outlets of filtration with manganese sand device purify in storage tank 7, for dyeing and printing process from flowing into.
As shown in Figure 1, a kind of device for above-mentioned high salinity high chroma dyeing waste water recovery process, comprises connected successively equalizing tank 1, the first advanced oxidation device 2, the second advanced oxidation device 4, strainer and purification storage tank 7;
Described equalizing tank 1 is provided with blower unit 8; Between described equalizing tank 1 and the first advanced oxidation device 2, be provided with waste water lifting pump 9; Between the first described advanced oxidation device 2 and the second advanced oxidation device 4, be provided with intermediate pool 3; Described strainer comprises sandfiltration pot 5 and filtration with manganese sand device 6.
As shown in Figure 2, the first described advanced oxidation device 2 comprises waste water lifting pump 9, the second medicine chests 10, line mixer 11, the three medicine chests 12, effluent trough 13, TiO
2layer 14, ultraviolet tube 15, mixing reactor 16, the waste water in equalizing tank 1 enters mixing reactor 16 by waste water lifting pump 9 via waste water lifting pipeline.The second medicine chest 10 is connected to waste water lifting pipeline through drug feeding pipeline.In described waste water lifting pipeline, after the drug feeding pipeline tie point of the second medicine chest 10, be provided with line mixer 11.The drug feeding pipeline of the 3rd medicine chest 12 and waste pipe pass in mixing reactor 16 simultaneously.Through the reacted water outlet of mixing reactor 16, from bottom to top pass through successively each layer of equally distributed TiO
2the irradiation of layer 14 and ultraviolet tube 15, is finally discharged by effluent trough 13.
As shown in Figure 3, the second described advanced oxidation device 4 comprises housing 17, ultraviolet lamp hole 18, recirculated water water outlet 19, water purification water outlet 20, raw water inlet 21, sewage draining exit 22, inspection window 23, support 24.Recirculated water water outlet 19 and water purification water outlet 20 are separately positioned on the top of housing 17, raw water inlet 21 is arranged on the bottom of housing 17, in the outside of housing 17, be provided with the communication apparatus of communication loop water water outlet 19 and raw water inlet 21, described communication apparatus comprises pipeline and is arranged on the water pump on described pipeline, communication apparatus arranges in operating process, inspection window 23 is arranged on the bottom of housing 17, operator can enter the second advanced oxidation device 4 from inspection window 23, to installing inside, check, the quantity of ultraviolet ray lamp hole 18 is several, ultraviolet ray lamp hole 18 is evenly distributed on housing 17 walls, UV-lamp is the internal irradiation to housing 17 by ultraviolet lamp hole 18, the inwall of housing 17 is provided with TiO
2coating, sewage draining exit 22 is arranged on the bottom of housing 17, and the bottom of housing 17 is provided with support 24.
As shown in Figure 4, described sandfiltration pot 5 comprises the first tank body, and described the first tank body top is provided with sandfiltration pot water inlet pipe 25, and described the first tank base is provided with sandfiltration pot rising pipe 26, described the first tank body one side is provided with sandfiltration pot spigot discharge 27, and described the first tank body lower part is also provided with sandfiltration pot pillar 28.Described sandfiltration pot inside is provided with quartz sand and pebbles, pebbles is positioned at bottom, and quartz sand is positioned at top, and quartz sand is divided into three layers of upper, middle and lowers, upper strata quartz sand particle size 2-4mm, thick 1.2m, middle level quartz sand particle size 4-8mm, thick 0.3m, the quartz sand particle size 8-16mm of lower floor, thick 0.3m, pebbles footpath, bottom 16-32mm, thick 0.25m.
As shown in Figure 5, described filtration with manganese sand device 6 comprises the second tank body, described the second tank body top is provided with filtration with manganese sand device water inlet pipe 29, filtration with manganese sand device venting port 30 and joint hinge 31, described the second tank base is provided with filtration with manganese sand device rising pipe 32, described the second tank body one side is provided with filtration with manganese sand device spigot discharge 33, and described the second tank body lower part is provided with filtration with manganese sand device pillar 34.The inside of described filtration with manganese sand device is provided with manganese sand and quartz sand, and quartz sand is positioned at bottom, and manganese sand is positioned at top, manganese sand grains footpath, top 1-5mm, thick 1.5m, quartz sand is divided into two-layer up and down, upper strata quartz sand particle size 2-4mm, thick 0.35m, the quartz sand particle size 4-8mm of lower floor, thick 0.35m.
The water outlet of the second advanced oxidation device 4 enters sandfiltration pot 5 through sandfiltration pot water inlet pipe 25, through quartz sand and pebbles, filter, suspended substance in water is removed, water outlet is flowed out and is entered filtration with manganese sand device 6 by filtration with manganese sand device water inlet pipe 29 by sandfiltration pot rising pipe 26, through manganese sand, remove the iron in anhydrating, the quartz sand of lower floor further, except anhydrating middle suspended substance, guarantees effluent quality.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a retrieving arrangement for high salinity high chroma dyeing waste water, is characterized in that: comprise connected successively equalizing tank (1), the first advanced oxidation device (2), the second advanced oxidation device (4), strainer and purification storage tank (7);
Described the first advanced oxidation device (2) is provided with inside and outside two layers of walls, and inner layer wall inside is provided with mixing reactor (16), and the bottom opening of inner layer wall also communicates with described outer wall; Between described inside and outside two layers of walls, be from bottom to top alternately provided with successively some TiO
2layer (14) and ultraviolet tube (15), the top of described the first advanced oxidation device (2) is provided with effluent trough (13).
2. retrieving arrangement according to claim 1, is characterized in that: described mixing reactor (16) is connected with described equalizing tank (1) by waste water lifting pipeline, and described waste water lifting pipeline is provided with waste water lifting pump (9);
Described mixing reactor (16) is connected with the 3rd medicine chest (12) by drug feeding pipeline;
Described waste water lifting pipeline is connected with the second medicine chest (10) through drug feeding pipeline, is provided with line mixer (11) after the drug feeding pipeline tie point of the second medicine chest (10), for the second medicine is mixed with waste water.
3. retrieving arrangement according to claim 1 and 2, is characterized in that: described the second advanced oxidation device (4) comprises housing, and described inner walls is provided with TiO
2coating, described housing wall is provided with some ultraviolet lamp holes (18), and described housing outer wall is provided with UV-lamp.
4. retrieving arrangement according to claim 3, is characterized in that: described strainer comprises sandfiltration pot (5) and filtration with manganese sand device (6).
5. retrieving arrangement according to claim 4, it is characterized in that: described sandfiltration pot (5) inside is provided with quartz sand and pebbles, top quartz sand particle size 2-4mm, thick 1.2m, middle part quartz sand particle size 4-8mm, thick 0.3m, bottom quartz sand particle size 8-16mm, thick 0.3m, pebbles footpath, bottom 16-32mm, thick 0.25m.
6. retrieving arrangement according to claim 5, is characterized in that: the inside of described filtration with manganese sand device (6) is provided with manganese sand and quartz sand, manganese sand grains footpath, top 1-5mm, thick 1.5m, middle part quartz sand particle size 2-4mm, thick 0.35m, bottom quartz sand particle size 4-8mm, thick 0.35m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467833.4A CN103570171B (en) | 2012-08-15 | 2012-08-15 | Equipment for recovering high-salinity high-chroma dyeing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467833.4A CN103570171B (en) | 2012-08-15 | 2012-08-15 | Equipment for recovering high-salinity high-chroma dyeing wastewater |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210289827XA Division CN102774998B (en) | 2012-08-15 | 2012-08-15 | High-salinity high-chromaticity printing and dyeing wastewater recovery process and equipment thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103570171A true CN103570171A (en) | 2014-02-12 |
| CN103570171B CN103570171B (en) | 2015-04-22 |
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| CN104843901A (en) * | 2015-05-14 | 2015-08-19 | 苏州膜海分离技术有限公司 | Bleaching and dyeing wastewater treatment method with combination of advanced oxidation and ultrafiltration |
| CN105923737A (en) * | 2016-06-17 | 2016-09-07 | 东莞道汇环保科技有限公司 | Method for treating waste water by using advanced oxidation technology |
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|---|---|
| CN103570171B (en) | 2015-04-22 |
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