CN101514057A - Method for recycling textile, printing and dyeing wastewater - Google Patents
Method for recycling textile, printing and dyeing wastewater Download PDFInfo
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- CN101514057A CN101514057A CNA2008103057472A CN200810305747A CN101514057A CN 101514057 A CN101514057 A CN 101514057A CN A2008103057472 A CNA2008103057472 A CN A2008103057472A CN 200810305747 A CN200810305747 A CN 200810305747A CN 101514057 A CN101514057 A CN 101514057A
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Abstract
The invention discloses a method for recycling textile, printing and dyeing wastewater, comprising the following steps: mercerizing wastewater, bleaching wastewater or desizing wastewater and the like produced in the production processes of textile, printing and dyeing are first subjected to filtering by a mechanical filter to remove suspended matters and colloid in the wastewater and then to filtering by ceramic membranes to intercept most pollutants in the wastewater; then the filtered wastewater meeting the quality requirement of the production technology applied water is recycled. In the invention, mechanical filtering and ceramic membrane filtering are adopted for recycling of the wastewater produced in the production processes of textile, printing and dyeing, thus not only saving the water resources and reducing the enterprise cost, but also ensuring low cost, convenient operation and control and low operating cost.
Description
Technical field
The present invention relates to a kind of wastewater treatment method, the process for reclaiming of particularly a kind of weaving, dyeing waste water.
Background technology
In the production process of weaving, printing and dyeing enterprise, can produce a large amount of waste water.The desized wastewater that destarch workshop section is produced is the most serious waste water of pollution level in the whole process of production, its COD (chemical oxygen demand (COD)) mean concns can reach 17000～19000mg/L, it to be handled to emission standard, difficulty is big, cost is high, but colourity only is about 32, handles the requirement that can reach water of productive use a little, simultaneously its exhaust temperature height, on average about 85 ℃, heating can reach the manufacturing technique requirent temperature a little.Boil float the bleaching effluent that workshop section produces COD concentration about 3500, colourity 32, its complicated component, intractability is bigger.According to the process characteristic that bleaching is produced, its waste water there is no direct reuse and is worth, but bleaching effluent can be back to use on the boiling of its leading portion.The mercerizing waste water branch that mercerising workshop section produces rolls alkali spray section and washing section waste water, spray section waste water is because alkalinity is bigger, generally all reclaim alkali lye by soda recovery unit, washing section waste water is except that containing small amount of alkali and a small amount of cotton fibre, there is not other impurity, water temperature can reach more than 85 ℃ simultaneously, as long as by just arriving destarch kiering workshop section by direct reuse after the suitable filtration treatment, have higher utility value.
Summary of the invention
Technical problem to be solved by this invention is to provide the process for reclaiming of a kind of weaving, dyeing waste water, and the cost of this method is low, convenient operation and management and working cost are low.
For solving the problems of the technologies described above technical scheme of the present invention: the process for reclaiming of a kind of weaving, dyeing waste water.This method is that the waste water that will produce in weaving, the printing and dyeing production process filters through mechanical filter earlier, to remove suspended substance and the colloid in the waste water, pass through ceramic membrane filter then, to hold back the most of pollutent in the waste water, the waste water that will reach production technique water water quality requirement after will filtering again carries out reuse.
In above-mentioned weaving, the process for reclaiming of dyeing waste water, be desized wastewater that destarch workshop section is produced behind mechanical filter and ceramic membrane filter direct reuse as the destarch water.
In the process for reclaiming of aforesaid weaving, dyeing waste water, be with boil float bleaching effluent that workshop section produces behind mechanical filter and ceramic membrane filter reuse as the kiering water.
In the process for reclaiming of aforesaid weaving, dyeing waste water, be that mercerizing waste water reuse behind mechanical filter and ceramic membrane filter that mercerising workshop section produces is floated water as boiling.
In the process for reclaiming of aforesaid weaving, dyeing waste water, used mechanical filter is the steel candle filter, and filter core adopts the stainless steel wrap wire pipe, filtering accuracy is 0.1mm, adopts the high-pressure pump feedwater, 80 meters of lifts, carry out automatic backwash by inlet outlet pressure differential, pressure reduction is 0.5kgf/cm
2Used ceramic membrane is a ceramic super-filtering film, and the aperture is 50nm, adopts the cross flow filter mode, and film pipe flow velocity is 4.5m/s, and film pipe end pressure reduction is 0.4MPa.
Beneficial effect: the present invention adopts the method for mechanical filter+ceramic membrane filter that the waste water that produces in weaving, the printing and dyeing production process is handled reuse, with the mercerizing waste water reuse to bleaching aqueous, bleaching effluent reuse to kiering water, desized wastewater direct reuse, save water resources, reduced enterprise cost.And when the impurity in removing sewage makes it to reach the production reuse and require, do not destroy the chemical property of sewage, and keep the temperature of waste water as far as possible, reclaim the heat energy of waste water to greatest extent.
The present invention adopts the reuse method of mechanical filter+ceramic membrane filter method as desized wastewater according to the service requirements of the characteristics and the production technique of desized wastewater.Adopt suspended substance and colloid in the mechanical filter removal waste water, low than other strainer costs, convenient operation and management.Adopt ceramic film component to hold back most of pollutent in the waste water, have strong alkali-acid resistance, resistance to oxidation, high temperature resistant, advantage such as working cost is low than other material membrane modules.
The present invention adopts the method for mechanical filter+ceramic membrane filter, go adding in the kiering water of productive use after the bleaching effluent direct filtration, when satisfying the water of productive use demand, not only can accomplish the bleaching effluent reuse, save energy, can also solve the problem that kiering part high temperature steams the fouling of tank-washer fabric guide roll, its result of use is good.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1.The Treatment for Reuse of desized wastewater.As shown in Figure 1, the desized wastewater that destarch workshop section is produced filters through mechanical filter earlier, to remove suspended substance and the colloid in the waste water, filters through ceramic film component then, holding back the most of pollutent in the waste water, the water direct reuse after will filtering again to destarch workshop section as the destarch water.This technology has been carried out a large amount of experiments to ceramic film component, is 50nm by the aperture of ceramic membrane, and mechanical filter of the present invention+ceramic membrane filter treatment process can reach following technical indicator, see Table 1.
Table 1 desized wastewater reuse technology index
| Project | CODcr(mg/L) | Clearance | Colourity (doubly) | Clearance | Temperature |
| Desized wastewater | 17500 | 32 | 85℃ | ||
| Mechanical filter | 14875 | 15％ | 32 | 75℃ | |
| Ceramic membrane filter | 9850 | 34％ | 16 | 50％ | 75℃ |
| Reuse water quality | 9850 | 16 | 75℃ |
By above-mentioned data analysis as can be seen, adopt the method for mechanical filter+ceramic membrane filter that desized wastewater is carried out Treatment for Reuse, can make the COD of destarch workshop section be the waste water of 17000～19000mg/L to reach COD be 9850mg/L, reach this workshop section's production technique water requirements in water quality.
What the mechanical filter in this example adopted is the steel candle filter, and filter core adopts the stainless steel wrap wire pipe, and filtering accuracy is 0.1mm.Mechanical filter adopts the high-pressure pump feedwater, and 80 meters of lifts carry out automatic backwash by inlet outlet pressure differential, pressure differential resetting 0.5kgf/cm
2The ceramic super-filtering film that ceramic film component adopts Nanjing nine Si Gaoke company limiteds to produce, model is T0706, the aperture is 50nm, the cross flow filter mode, film pipe design current velocity is 4.5m/s, and film pipe end pressure reduction is 0.4MPa, and assembly outer tube material is UPVC; Membrane material is the tubular type pottery, and the diameter of assembly outer tube is 250mm, and length is 1200mm, and the film total area is
4.5m2 its surfaces externally and internally is a tight zone, the aspect micropore that gathers, and the centre is a porous support layer.Mainly constitute by asymmetric ceramic membrane element.Ceramic membrane is a kind of mineral membrane, is metal (aluminium, titanium or zirconium) is combined with nonmetal oxide, nitride or carbide and to constitute.For polymer materials, inorganic materials has extraordinary chemistry and thermostability.The asymmetric purpose of this asymmetric ceramic membrane is to constitute a kind of flawless separating layer, reduces the flowed friction of film simultaneously again, and ensures the physical strength of film.Its carrier is to be formed by coarse grained ceramic powder sintering.The carrier immersion is contained in the polymeric form suspension of fine dispersion particulate, separating layer is coated on the carrier, after the drying, again it is sintered into oxide skin.
Embodiment 2.The Treatment for Reuse of bleaching effluent.As shown in Figure 2, float the bleaching effluent process mechanical filter filtration earlier that workshop section produces with boiling,, filter through ceramic film component then to remove suspended substance and the colloid in the waste water, to hold back the most of pollutent in the waste water, the water reuse after will filtering is again floated workshop section as the kiering water to boiling.What mechanical filter adopted is the steel candle filter, and filter core adopts the stainless steel wrap wire pipe, and filtering accuracy is 0.1mm.Mechanical filter adopts the high-pressure pump feedwater, and 80 meters of lifts carry out automatic backwash by inlet outlet pressure differential, pressure differential resetting 0.5kgf/cm
2The ceramic super-filtering film that ceramic film component adopts Nanjing nine Si Gaoke company limiteds to produce, the aperture is 50nm, model is T0706.This technology has been carried out a large amount of experiments to ceramic film component, is 50nm by the aperture of ceramic membrane, and mechanical filter of the present invention+ceramic membrane filter treatment process can reach following technical indicator, see Table 2.
Table 2 bleaching effluent reuse technology index
| Project | CODcr(mg/L) | Clearance | Colourity (doubly) | Clearance | Temperature |
| Bleaching effluent | 3700 | 32 | 85℃ | ||
| Mechanical filter | 3145 | 15％ | 32 | 75℃ | |
| Ceramic membrane filter | 704 | 78％ | 16 | 50％ | 75℃ |
| Reuse water quality | 704 | 16 | 75℃ |
By above-mentioned data analysis as can be seen, adopt the treatment process of mechanical filter+ceramic membrane filter that bleaching effluent is carried out Treatment for Reuse, can make boil float the COD of workshop section be the bleaching effluent of 3700mg/L to reach COD be 704mg/L, reach this workshop section's production technique water requirements in water quality.
Embodiment 3.The Treatment for Reuse of mercerizing waste water.As shown in Figure 3, the mercerizing waste water that mercerising workshop section is produced filters through mechanical filter earlier, to remove suspended substance and the colloid in the waste water, filters through ceramic film component then, holding back the most of pollutent in the waste water, the water reuse after will filtering is again floated workshop section and is floated water as boiling to boiling.What mechanical filter adopted is the steel candle filter, and filter core adopts the stainless steel wrap wire pipe, and filtering accuracy is 0.1mm.Mechanical filter adopts the high-pressure pump feedwater, and 80 meters of lifts carry out automatic backwash by inlet outlet pressure differential, pressure differential resetting 0.5kgf/cm
2The ceramic super-filtering film that ceramic film component adopts Nanjing nine Si Gaoke company limiteds to produce, the aperture is 50nm, model is T0706.This technology has been carried out a large amount of experiments to ceramic film component, aperture by ceramic membrane is 50nm, through lot of experiment validation, mechanical filter of the present invention+ceramic membrane filter treatment process can make the mercerizing waste water of mercerizer's section reach and boil the production technique water requirements in water quality of floating workshop section.
Embodiments of the present invention are not limited to the foregoing description, and the various variations of making under the prerequisite that does not break away from aim of the present invention all belong within protection scope of the present invention.
Description of drawings
Fig. 1 is the reuse treatment process route map of desized wastewater of the present invention;
Fig. 2 is the reuse treatment process route map of bleaching effluent of the present invention;
Fig. 3 is the reuse treatment process route map of mercerizing waste water of the present invention.
Claims (5)
1, the process for reclaiming of a kind of weaving, dyeing waste water, it is characterized in that: it is that the waste water that will produce in weaving, the printing and dyeing production process filters through mechanical filter earlier, remove suspended substance and colloid in the waste water, pass through ceramic membrane filter then, to hold back pollutants in waste water, the waste water that will reach production technique water water quality requirement after will filtering again carries out reuse.
2. the process for reclaiming of weaving according to claim 1, dyeing waste water is characterized in that: it be desized wastewater that destarch workshop section is produced behind mechanical filter and ceramic membrane filter direct reuse as the destarch water.
3. the process for reclaiming of weaving according to claim 1, dyeing waste water is characterized in that: it be with boil float bleaching effluent that workshop section produces behind mechanical filter and ceramic membrane filter reuse as the kiering water.
4. the process for reclaiming of weaving according to claim 1, dyeing waste water is characterized in that: it is that mercerizing waste water reuse behind mechanical filter and ceramic membrane filter that mercerising workshop section produces is floated water as boiling.
5. according to the process for reclaiming of any described weaving, dyeing waste water in the claim 1～4, it is characterized in that: described mechanical filter is the steel candle filter, filter core adopts the stainless steel wrap wire pipe, filtering accuracy is 0.1mm, the feedwater of employing high-pressure pump, 80 meters of lifts carry out automatic backwash by inlet outlet pressure differential, and pressure reduction is 0.5kgf/cm2; Described ceramic membrane is a ceramic super-filtering film, and the aperture is 50nm, adopts the cross flow filter mode, and film pipe flow velocity is 4.5m/s, and film pipe end pressure reduction is 0.4MPa.
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| CNA2008103057472A CN101514057A (en) | 2008-11-26 | 2008-11-26 | Method for recycling textile, printing and dyeing wastewater |
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| CNA2008103057472A CN101514057A (en) | 2008-11-26 | 2008-11-26 | Method for recycling textile, printing and dyeing wastewater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870501A (en) * | 2010-07-07 | 2010-10-27 | 陶国来 | Method for processing dispersed dye coupling solution by utilizing ceramic membrane and corresponding system |
| CN102863062A (en) * | 2012-10-11 | 2013-01-09 | 扬州市革领高科技纳米环保设备有限公司 | Separating method of aqueous alkali and size in refining waste water of dyeing and finishing |
| WO2013106965A1 (en) * | 2012-01-20 | 2013-07-25 | 无锡诺赛净科技有限公司 | Zero-emissions process for manufacturing natural colour cotton woven fabric |
| WO2013106966A1 (en) * | 2012-01-20 | 2013-07-25 | 无锡诺赛净科技有限公司 | Process for manufacturing woven fabric with zero emissions |
| CN103334299A (en) * | 2013-06-25 | 2013-10-02 | 上海鼎利化工有限公司 | Method for treating printing and dyeing wastewater to realize reclamation and reuse |
| CN107569902A (en) * | 2017-10-02 | 2018-01-12 | 毛强平 | A kind of processing method and processing device of dyeing waste water |
-
2008
- 2008-11-26 CN CNA2008103057472A patent/CN101514057A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870501A (en) * | 2010-07-07 | 2010-10-27 | 陶国来 | Method for processing dispersed dye coupling solution by utilizing ceramic membrane and corresponding system |
| WO2013106965A1 (en) * | 2012-01-20 | 2013-07-25 | 无锡诺赛净科技有限公司 | Zero-emissions process for manufacturing natural colour cotton woven fabric |
| WO2013106966A1 (en) * | 2012-01-20 | 2013-07-25 | 无锡诺赛净科技有限公司 | Process for manufacturing woven fabric with zero emissions |
| CN102863062A (en) * | 2012-10-11 | 2013-01-09 | 扬州市革领高科技纳米环保设备有限公司 | Separating method of aqueous alkali and size in refining waste water of dyeing and finishing |
| CN103334299A (en) * | 2013-06-25 | 2013-10-02 | 上海鼎利化工有限公司 | Method for treating printing and dyeing wastewater to realize reclamation and reuse |
| CN103334299B (en) * | 2013-06-25 | 2015-11-18 | 上海鼎利化工有限公司 | A kind of processing method of dyeing waste water regeneration |
| CN107569902A (en) * | 2017-10-02 | 2018-01-12 | 毛强平 | A kind of processing method and processing device of dyeing waste water |
| CN107569902B (en) * | 2017-10-02 | 2019-10-08 | 汉蕴华风(上海)环保科技有限公司 | A kind of processing method and processing device of dyeing waste water |
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Application publication date: 20090826 |