CN101391854A - Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof - Google Patents
Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof Download PDFInfo
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- CN101391854A CN101391854A CNA200810195250XA CN200810195250A CN101391854A CN 101391854 A CN101391854 A CN 101391854A CN A200810195250X A CNA200810195250X A CN A200810195250XA CN 200810195250 A CN200810195250 A CN 200810195250A CN 101391854 A CN101391854 A CN 101391854A
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Abstract
The invention relates to a treatment technique of printing waste water and chemical industry waste water and a structure thereof. The treatment technique carries out colorless and colored flow diversion to the waste water, then carries out treatment respectively, realizes the recycling of the colorless waste water after advanced treatment and standardized discharge of the colored waste water respectively, fully utilizes the original equipment and fields for waste water treatment on the basis of not adding structures, carries out reconstruction to an adjusting tank, widens a fire-fighting tank, adds UV/TiO2Fenton treatment, fully utilizes the original idle equipment, combines the improvement of the technique, completes two waste water treatment techniques in the original one set of waste water treating device, and simultaneously reaches the recycling of the colorless waste water after advanced treatment and standardized discharge of the colored waste water.
Description
Technical field:
What the present invention relates to is a kind of sewage water treatment method and corresponding sewage treatment structure thereof, especially at the treatment process and the structures thereof of dyeing waste water and wastewater from chemical industry, and the field that belongs to environmental pollution and improvement, resource recovery and utilize.
Background technology:
Dyeing is the water rich and influential family, also is the blowdown rich and influential family.Printing and dyeing enterprise generally all has perfect Sewage treatment systems, sewage treated up to standard after, enter the municipal sewage treatment pipe network or directly enter surface water body.But because the shortage day by day and the severe contamination of water resources, no matter from the angle of enterprise cost still from the demand for development of social enviroment protection, reuse was very necessary after dyeing waste water carried out advanced treatment.Dyeing waste water is according to the difference of degree of treatment at present, and two kinds of different reuse approach are arranged: first kind is after waste water is carried out advanced treatment, to reach drinking water standard or direct reuse in production.Generally seldom adopt (except the special water-deficient area) because of this method investment cost is big, running cost is higher, technology is numerous and diverse; Second kind is after wastewater to reach standard is handled, and is used for the not high place of water quality requirement as flushing or greenery patches.What majority state was taked is second kind of Treatment for Reuse mode.
China's middle water reuse is truly started late, it mainly is combination treatment with sanitary sewage or sanitary sewage and trade effluent, the terminal client of its reuse is not to be the industrial production higher to water quality requirement, only is used for flushing and the greenery patches not high to water quality requirement.
Water is back in the domestic printing and dyeing also introduction on the production means, typical technical process is: waste water-anaerobic oxidation ditch-aerobic bio-contact oxidation-efficient decolorizing air supporting-filtration-activated carbon-ion-exchange-reuse.This technological operation simple flow, automatic operating.Water outlet after the processing can be used for operations such as destarch, kiering, rinsing, mercerising.But this typical process also exists several like this problems:
1, dyeing and finishing being processed waste water that each operation produces merges processing and can make that water-quality constituents becomes more complicated, intractability increases, the processing costs rising.Belong to merge to handle, mix regulate, cut down step by step, the pattern of qualified discharge, cause easily expensive, do not have repayment, control consequence not to the utmost.Incompatible present situation has required.
2, technical process is long, structures are many, processing energy consumption height, expense are big, particularly to the waterpower of back flushing have relatively high expectations, washing water quantity is big, floor space is big, makes this waste water treatment, recovery and utilization be difficult to popularize.
3, the regeneration difficulty of gac has also improved running cost.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, to original printing-dyeing waste water treatment process reconfigure, part structures reconstructions, newly-increased UV/TiO
2/ Fenton handles, arranged two cover sewage treatment process respectively in an original cover sewage treatment structure, broken original factory effluents at different levels merge handle, mix regulate, cut down step by step, the pattern of qualified discharge, having implemented " coloured colourless shunting is divided and ruled ", " colourless waste water recycling is in producing ", " colorful wastewater processings up to standard back networking " that printing and dyeing add wastewater from chemical industry.This method is simple, economical and effective, with low cost, and reuse water reaches the water quality requirement of dyeing water.It is a kind of method and technology with big Practical significance.
Concrete technical scheme of the present invention is as follows:
The treatment process of a kind of dyeing waste water and wastewater from chemical industry adopts waste water is carried out colourless, coloured shunting, handles respectively, has realized the reuse after the colourless waste water advanced processing and the qualified discharge of colorful wastewater respectively.Colourless waste water flows into settling tank after flowing into colourless equalizing tank, adds coagulated agent at the water inlet that flows into settling tank, and the coagulation settling is discharged in the sludge sump at the bottom of by settling tank, and the water outlet of settling tank is through UV/TiO
2/ Fenton handles and utilizes after the back elementary reuse tank of inflow is collected again; The sewage of elementary reuse tank is back to production after sand filtration and ion-exchange; Colorful wastewater enters second pond after flowing into flow through successively behind coloured equalizing tank anaerobic pond and aerobic biological contact oxidation pond, and settling is discharged in the sludge sump, and the sewage city's sewage disposal pipe network of going down town in upper strata is for further processing.
Specifically, the treatment process of waste water of the present invention mainly contains following innovative point:
One, divides and rules, focuses on reuse.The waste water that produces in producing is carried out coloured, colourless shunting transformation.Colourless water is mainly derived from cold dome, rolls alkali, open washing, mercerising, squezzing and sanitary wastewater and a spot of (about 180～200 tons of every day) wastewater from chemical industry; Colorful wastewater is mainly derived from examination chemical examination water, dye gigging, overflow dyeing and back arrangement water.Wherein colourless water accounts for greatly about the 1/2-2/3 of Total Water, is back to production after handling, to reach the purpose of water-saving and emission-reducing; Colored water (comprising sanitary sewage) is then handled by former processing scheme.By adjusting production technique and the municipal sewage treatment pipe networks that enter up to standard such as sewage treatment process, improvement processing mode.
Two, improving technology carries out the acid out of soluble substance and coagulating sedimentation simultaneously.General coagulated agent mainly contains aluminium salt, molysite and other high-molecular coagulant adoptings.The range of choice of conventional coagulation process PH is generally PH7-8, and the present invention according to the water quality characteristic of dyeing waste water, has selected the strongly-acid coagulation process in colourless water reuse treatment process.PH value is controlled in the scope of 1-2, the chroma in waste water behind coagulating sedimentation is low, the COD removal effect is good.In PH was the scope of 1-2, the slurry in the pre-treatment waste water was separated out in a large number; Soluble impurity in the water (as sodium lignosulfonate, pectic acid sodium, soluble amino acid sodium salt, fatty acid sodium salt etc.) is transformed into insoluble colloid and sediment very soon, and the multinuclear of the aniorfic surfactant in these colloids and the waste water, the coagulant polymeric ferro-aluminum high electric charge low polymerization degree that hydrolysis generates under strong acidic condition cooperates ion to catch volume by the electrical neutralizing effect of compression double electric layer, polymer adsorption bridging and sedimentary net to sweep to act on and be removed; Greatly reduce the colourity of COD value and waste water.This process has comprised the acid out of soluble substance and the coagulating sedimentation of organic colloid in fact.
Three, increased UV/TiO
2/ Fenton treatment unit is guaranteed the quality of reuse water.The settling tank exit adds hydrogen peroxide and TiO
2, utilize the low PH of settling tank water outlet, under strong acidic condition, make organism in the waste water further at Fe
2+, H
2O
2, TiO
2With oxidized degraded under the effect of UV-light.This device is arranged on by the elementary reuse tank, establishes water collecting basin no longer in addition, utilizes elementary reuse tank to collect through UV/TiO
2The elementary reuse water that/Fenton method is handled.At UV/TiO
2The water outlet of/Fenton treatment unit carries out the alkali neutralization, makes the PH of elementary reuse water reach neutrality.
In addition, for above-mentioned waste water treatment process is effectively implemented, the present invention provides a kind of structures of implementing this technology simultaneously, described structures have designed two waste water treatment process circuits at an original cover in the sewage treatment structure, have realized the reuse after the colourless waste water advanced processing and the qualified discharge of colorful wastewater respectively.
A kind of structures that are used for dyeing waste water and chemical wastewater treatment, described structures comprise the colourless equalizing tank that is used to collect colourless waste water, the elementary reuse tank that is used to collect coloured equalizing tank of colorful wastewater and is used to collect elementary reuse water;
Described colourless equalizing tank is communicated with settling tank, and the sludge outlet of settling tank bottom is communicated with sludge sump, and the water outlet of settling tank is communicated with elementary reuse tank;
Described coloured equalizing tank is communicated with anaerobic pond, the sludge outlet of anaerobic pond bottom is communicated with sludge sump, the water outlet of anaerobic pond is communicated with the aerobic bio-contact oxidation pond, the water outlet in aerobic bio-contact oxidation pond is communicated with second pond, the sludge outlet of second pond bottom is communicated with sludge sump, and the water outlet of second pond is communicated with the municipal sewage treatment pipe network.
Described elementary reuse tank be provided be used to wash, first water outlet that greening, fire-fighting are used and second water outlet that elementary reuse water is carried out advanced treatment.
Described second water outlet is communicated with sand filtration and ion exchange column and final and water of productive use pipeline connection.
Be provided with in the described settling tank and be used for prolonging the reverse-flow baffle of water at the settling tank hydraulic detention time.
Water stream channel between described settling tank and the elementary reuse tank is provided with sinuous swash plate tank, is provided with the high voltage mercury lamp that carries out ultraviolet lighting above the swash plate tank.
The structures that are used for dyeing waste water and chemical wastewater treatment of the present invention on the basis that does not increase structures, have made full use of the equipment and the place of original sewage disposal, but have done more such adjustment:
1, equalizing tank is reconstructed.Equalizing tank is divided into two, and colourless, the colorful wastewater of separated deposit is set up the aeration scatterer at the bottom of the pond, is respectively applied for aeration mixing homogeneous colourless, colorful wastewater;
2, widen the fire-fighting pond as elementary reuse tank;
3, set up reverse-flow baffle in the settling tank, prolonged the hydraulic detention time of water in settling tank;
4, increased UV/TiO
2/ Fenton treatment unit is guaranteed the quality of reuse water.
5, made full use of idle unit (six ion exchange columns in the softening processing of former phreatic water, four change sand filtration into, keep two still as ion exchange column).
In sum, by the reconstruction of structures and the adjustment of technology, the beneficial effect that obtains is:
1, improved the coagulation mode
Water quality characteristic at printing and dyeing mill's pre-treatment, coagulation condition is changed into the strongly-acid coagulation of PH 1-2 from traditional PH 7-8, organic acid out and coagulating sedimentation united two into one, shortened technical process, improved the treatment effect of removing COD and colourity, reduced processing cost.
2, the reconstruction of sewage treatment structure
In conjunction with Fig. 5 is that former plant effuent is handled the distribution schema of structures and the distribution schema of Fig. 7 sewage treatment structure of the present invention contrasts as can be seen: on the basis that does not increase structures, the equipment and the place of original sewage disposal have been made full use of, equalizing tank is reconstructed, widen the fire-fighting pond, increased UV/TiO
2/ Fenton handles, and has made full use of former idle unit, and the improvement of combined process has been finished two cover sewage treatment process in an original cover waste disposal plant, reached the degree of depth reuse of the qualified discharge and the colourless waste water of colorful wastewater simultaneously.More reasonable according to the also more original water flow process of water flow process (as shown in Figure 6) (as shown in Figure 4) layout that treatment process of the present invention is provided with, the utilization of water distributes more science, and the water of productive use of part and fire-fighting, greening, flushing etc. all can be adopted the reuse water after this programme is handled.Significantly reduced the consumption of tap water.Calculate according to this factory's actual production scale, estimate to save every day the tap water about 400～500 tons.
3, handle the water-quality guideline of front and back
Water-quality guideline before and after handling
Description of drawings
The present invention is further described with enforcement below in conjunction with accompanying drawing.
Fig. 1 is dyeing waste water and a chemical wastewater treatment process flow sheet before adjusting.
Fig. 2 is that the present invention shunts the colourless wastewater treatment process figure in back.
Fig. 3 is that the present invention shunts back colorful wastewater processing flow chart.
Fig. 4 is former service water schema.
Fig. 5 is the distribution schema that former plant effuent is handled structures.
Fig. 6 is a service water schema of the present invention.
Fig. 7 is a distribution schema of adjusting the back sewage treatment structure according to the present invention.
Fig. 8 is a swash plate sink structure synoptic diagram.
Among the figure: 1. colourless water-in 2. coloured water-in 3. colourless equalizing tank 4. coloured equalizing tank 5. elementary reuse tank 6. settling tanks 7. reverse-flow baffles 8. settling tanks water inlet dosing mouth 9. settling tank water outlet dosing mouths 10. swash plate tanks 11. high voltage mercury lamps 12. elementary reuse water first water outlet 13. sand filtrations 14. ion-exchanges 15. water of productive use 16. anaerobic ponds 17. aerobe contact tanks 18, the Aerobic Pond water outlet adds snack made with traditional Chinese medicines 19, second pond 20, municipal sewage treatment pipe network 21, sludge sump 22, filter press 23, chemical industry water inlet 24, elementary reuse water second water outlet
Embodiment
As the treatment process of a kind of dyeing waste water of Fig. 7 and wastewater from chemical industry, adopt waste water is carried out colourless, coloured shunting, handle respectively, realized the reuse after the colourless waste water advanced processing and the qualified discharge of colorful wastewater respectively:
As shown in Figure 2, colourless waste water flows into settling tank after flowing into colourless equalizing tank, adds coagulated agent at the water inlet that flows into settling tank, adopts the strongly-acid coagulation process, the coagulated agent that adds at the settling tank inlet is sulfuric acid and polymeric ferric aluminum, and sewage PH value is controlled in the scope of 1-2.The coagulation settling is discharged in the sludge sump at the bottom of by settling tank, adds hydrogen peroxide and TiO at the water outlet of settling tank
2, sewage is carried out the irradiation of UV-light by the conduct that settling tank flows to elementary reuse tank, the water outlet of settling tank is through UV/TiO
2After/Fenton handles, utilize again after flowing into elementary reuse tank and collecting.Reclaim the water that flows into elementary reuse tank and can be used as workshop flushing and the occasion utilizations not high such as greening, water for fire-fighting purpose or office block cleaning water quality requirement, as need further increasing water quality, utilize as producing, the water of elementary reuse tank is again through sand filtration and ion-exchange again.
The treatment scheme of colorful wastewater as shown in Figure 3, colorful wastewater enters second pond after flowing into flow through successively behind coloured equalizing tank anaerobic pond and aerobic biological contact oxidation pond, settling is discharged in the sludge sump, and the sewage city's sewage disposal pipe network of going down town in upper strata is for further processing.
A kind of structures that are used for dyeing waste water and chemical wastewater treatment, as shown in Figure 7, described structures comprise the colourless equalizing tank 3 that is used to collect colourless waste water, the elementary reuse tank 5 of the backflow sewage after being used to collect coloured equalizing tank 4 of colorful wastewater and being used for collection and treatment; Described colourless equalizing tank 3 is communicated with settling tank 6, and the sludge outlet of settling tank 6 bottoms is communicated with sludge sump 21, and the water outlet of settling tank 6 is communicated with elementary reuse tank 5; Described coloured equalizing tank 4 is communicated with anaerobic pond 16, the sludge outlet of anaerobic pond 16 bottoms is communicated with sludge sump 21, the water outlet of anaerobic pond 16 is communicated with aerobic bio-contact oxidation pond 17, the water outlet in aerobic bio-contact oxidation pond 17 is communicated with second pond 19, the sludge outlet of second pond 19 bottoms is communicated with sludge sump 21, and the water outlet of second pond 19 is communicated with municipal sewage treatment pipe network 20; Described elementary reuse tank 5 be provided be used to wash, first water outlet 12 that greening, fire-fighting are used and second water outlet 24 that elementary reuse tank water is carried out advanced treatment.Second water outlet 24 is communicated with sand filtration 13 and ion exchange column 14 and finally is communicated with water of productive use pipeline 15.Be provided with in the described settling tank 6 and be used for prolonging the reverse-flow baffle 7 of water at settling tank 6 hydraulic detention times.As shown in Figure 8, between settling tank 6 and elementary reuse tank 5, be provided with sinuous swash plate tank 10, above swash plate tank 10, be provided with the high voltage mercury lamp 11 that carries out ultraviolet lighting.
Claims (10)
1. the treatment process of dyeing waste water and wastewater from chemical industry is characterized in that adopting waste water is carried out colourless, coloured shunting, handles respectively, has realized the reuse after the colourless waste water advanced processing and the qualified discharge of colorful wastewater respectively:
Colourless waste water flows into settling tank after flowing into colourless equalizing tank, adds coagulated agent at the water inlet that flows into settling tank, and the coagulation settling is discharged in the sludge sump at the bottom of by settling tank, and the water outlet of settling tank is through UV/TiO
2/ Fenton handles the back and flows into elementary reuse tank, utilizes after collecting again;
After colorful wastewater flows into coloured equalizing tank, flow through successively anaerobic pond, aerobic bio-contact oxidation pond, enter second pond then, the aerobic bio-contact oxidation pond is entered in the backflow of a second pond settling part, another part is discharged in the sludge sump, and the sewage city's sewage disposal pipe network of going down town in upper strata is for further processing.
2. the treatment process of dyeing waste water according to claim 1 and wastewater from chemical industry, it is characterized in that: described colourless waste water adopts the strongly-acid coagulation process in settling tank, the coagulated agent that adds at the settling tank inlet is acid solution and polymeric ferric aluminum, and sewage PH value is controlled in the scope of 1-2.
3. the treatment process of dyeing waste water according to claim 1 and wastewater from chemical industry is characterized in that: described acid solution is a sulfuric acid liquid.
4. the treatment process of dyeing waste water according to claim 1 and wastewater from chemical industry is characterized in that: described UV/TiO
2/ Fenton handles the water outlet that adopts at settling tank and adds hydrogen peroxide and TiO
2, waste water is carried out the irradiation of UV-light by the conduct that settling tank flows to elementary reuse tank.
5. the treatment process of dyeing waste water according to claim 1 and wastewater from chemical industry is characterized in that: the waste water of described elementary reuse tank is back to production after sand filtration and ion-exchange.
6. structures that are used for dyeing waste water and chemical wastewater treatment is characterized in that:
Described structures comprise the colourless equalizing tank (3) that is used to collect colourless waste water, the elementary reuse tank (5) of the backflow sewage after being used to collect coloured equalizing tank (4) of colorful wastewater and being used for collection and treatment;
Described colourless equalizing tank (3) is communicated with settling tank (6), and the sludge outlet of settling tank (6) bottom is communicated with sludge sump (21), and the water outlet of settling tank (6) is communicated with elementary reuse tank (5);
Described coloured equalizing tank (4) is communicated with anaerobic pond (16), the sludge outlet of anaerobic pond (16) bottom is communicated with sludge sump (21), the water outlet of anaerobic pond (16) is communicated with aerobic bio-contact oxidation pond (17), the water outlet in aerobic bio-contact oxidation pond (17) is communicated with second pond (19), the sludge outlet of second pond (19) bottom is communicated with sludge sump (21), and the water outlet of second pond (19) is communicated with municipal sewage treatment pipe network (20).
7. the structures that are used for dyeing waste water and chemical wastewater treatment according to claim 6 is characterized in that: described elementary reuse tank (5) be provided be used to wash, first water outlet (12) that greening, fire-fighting are used and second water outlet (24) that more elementary reuse tank water is carried out advanced treatment.
8. the structures that are used for dyeing waste water and chemical wastewater treatment according to claim 7 is characterized in that: described second water outlet (24) is communicated with sand filtration (13) and ion exchange column (14) and finally is communicated with water of productive use pipeline (15).
9. the structures that are used for dyeing waste water and chemical wastewater treatment according to claim 6 is characterized in that: be provided with in the described settling tank (6) and be used for prolonging the reverse-flow baffle (7) of water at the hydraulic detention time of settling tank (6).
10. the structures that are used for dyeing waste water and chemical wastewater treatment according to claim 6, it is characterized in that: be provided with sinuous swash plate tank (10) between described settling tank (6) and the elementary reuse tank (5), be provided with the high voltage mercury lamp (11) that carries out ultraviolet lighting in swash plate tank (10) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810195250XA CN101391854A (en) | 2008-10-31 | 2008-10-31 | Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810195250XA CN101391854A (en) | 2008-10-31 | 2008-10-31 | Treatment process of printing and dyeing wastewater and chemical wastewater and structures thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948220A (en) * | 2010-09-27 | 2011-01-19 | 邵志军 | Method for treating printing and dyeing wastewater |
| CN101597104B (en) * | 2009-07-28 | 2011-04-06 | 贵州省环境科学研究设计院 | Method for fenton photocatalytic oxidation degradation of various microcystins in water |
| CN103288238A (en) * | 2013-05-30 | 2013-09-11 | 浙江莱美纺织印染科技有限公司 | System for pure and impure printing and dyeing wastewater separation and wastewater recycling treatment |
| CN105174645A (en) * | 2015-10-13 | 2015-12-23 | 佰福聚能（天津）环保科技发展有限公司 | Practical waste water treatment energy-saving equipment and waste water treatment method |
-
2008
- 2008-10-31 CN CNA200810195250XA patent/CN101391854A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597104B (en) * | 2009-07-28 | 2011-04-06 | 贵州省环境科学研究设计院 | Method for fenton photocatalytic oxidation degradation of various microcystins in water |
| CN101948220A (en) * | 2010-09-27 | 2011-01-19 | 邵志军 | Method for treating printing and dyeing wastewater |
| CN101948220B (en) * | 2010-09-27 | 2012-05-02 | 邵志军 | Method for treating printing and dyeing wastewater |
| CN103288238A (en) * | 2013-05-30 | 2013-09-11 | 浙江莱美纺织印染科技有限公司 | System for pure and impure printing and dyeing wastewater separation and wastewater recycling treatment |
| CN103288238B (en) * | 2013-05-30 | 2014-10-08 | 浙江莱美纺织印染科技有限公司 | System for pure and impure printing and dyeing wastewater separation and wastewater recycling treatment |
| CN105174645A (en) * | 2015-10-13 | 2015-12-23 | 佰福聚能（天津）环保科技发展有限公司 | Practical waste water treatment energy-saving equipment and waste water treatment method |
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Open date: 20090325 |