CN100569356C - A kind of resin is used for the advanced treating and the recycling method of dyeing waste water - Google Patents
A kind of resin is used for the advanced treating and the recycling method of dyeing waste water Download PDFInfo
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- CN100569356C CN100569356C CNB2007100256588A CN200710025658A CN100569356C CN 100569356 C CN100569356 C CN 100569356C CN B2007100256588 A CNB2007100256588 A CN B2007100256588A CN 200710025658 A CN200710025658 A CN 200710025658A CN 100569356 C CN100569356 C CN 100569356C
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Abstract
The invention discloses advanced treating and recycling method that a kind of resin is used for dyeing waste water, its step comprises: (1) dyeing waste water is after the anaerobic-aerobic biochemical treatment, through leaving standstill filtration, remove suspension, under the flow velocity of 0.5～10BV/h, through being filled with ion-exchange and the adsorbent equipment that adsorbs composite function resin, adsorption temp is 0～40 ℃; With the saturated resin weight percent concentration of absorption is 3%～8% alkalescence, acid inorganic desorbing agent desorption successively, and high dense desorption liquid enters the mud regulating reservoir, and low dense desorption liquid to biochemical front end carries out biochemical treatment or be used for the following batch desorbing agent of preparation recycling.The present invention has adopted new combination separating process, has the advantage that technology is simple, easy to operate, automaticity is high, operating cost is low, treatment effect is good.Reach the dyeing water water standard after the processing, make bio-chemical effluent further finish reuse on the basis of discharge standard reaching, realized the minimizing and the resource of dyeing waste water.
Description
Technical field
Biochemical tailrace advanced processing of the dyeing waste water that the present invention relates to and reuse technology, particularly, be meant and utilize ion-exchange and adsorption dual functional resin residual organic, inorganic matter etc. in the dyeing waste water biochemical tail water to be handled and made the method for waste water recycling.
Background technology
The dyeing waste water complicated component, the organic concentration height, biodegradability is poor, the colourity height, change of water quality is big, and the water yield is big, accounts for 35% of industrial wastewater, and 90% as discharge of wastewater.Through after the biochemical treatment, because the variation and the hardly-biodegradable of water quantity and quality, quite a few can not reach discharge standard.Meanwhile, dyeing industry is high water consumption industry, and water saving is the important topic of the sector.Therefore, be necessary it is carried out advanced treating, make it reach reuse standard.Reduce wastewater discharge on the one hand, reduce water consumption on the other hand.
Advanced treating for dyeing waste water mainly contains physics method, bioanalysis, chemical method three major types method at present.Use certain single method all to be difficult to reach the expection treatment effect, thus GC-MS generally adopted, as physical-chemical, physics-biological GC-MS.The physics method comprises that charcoal absorption, resin adsorption, film separate, and the active carbon adsorption cost is lower, but the saturated cycle is short, and can't regenerate; The membrane separation process investment is high, and the life-span is short, and to the water quality requirement height, otherwise film easily stops up.Chemical method comprises photochemical oxidation, ozone oxidation, electrochemical oxidation, and this several method operating cost is all very high, and generally is applicable to shallow bid waste water, and the situation at big yield in the actual production is not still used precedent.Bioanalysis refers generally to the biological activated carbon technology with the coupling of physics method, and it is that microbial film is hung over surface, activated carbon duct, though can solve the problem of activated carbon regeneration, the cost height, water quality requirement is stable, and operation requires harsh.The dyeing waste water that these are big for actual amount of water, change of water quality is big all has certain limitation.
The technology that adopts resin method to handle waste water is an emerging in recent years wastewater processing technology, and it is generally used for handling poisonous organic wastewater and resource thereof.In actual application, when the toxic organic compound in the waste water (solute) passes through polymeric adsorbent (adsorbent) bed, produced Van der Waals force between adsorbent and the solute molecule, solute molecule is attracted to adsorbent surface.If in the time of forming hydrogen bond, then can improve adsorptive selectivity greatly.The solute that is adsorbed (toxic organic compound) selects for use suitable mode to get final product complete wash-out, and resin can reuse.High concentration desorption liquid generally can directly send the workshop cover in order to reclaim product or to be fully utilized, and realizes the resource of pollutant.After resin adsorption, waste water COD can be reduced to hundreds of from several ten thousand, but the material of its processing is comparatively single, and the waste water composition is also simple relatively.
Summary of the invention
1, goal of the invention
, operation stable at cost height, water quality requirement that the advanced treating of dyeing waste water exists requires problems such as harshness, the invention provides advanced treating and recycling method that a kind of resin is used for dyeing waste water, adopt this method can invest less, operating cost is low, simple to operate, effect stability, remove residual organic, inorganic matter etc. in the dyeing waste water biochemical tail water, thereby be back in the dyeing process after making every index of the biochemical tail water of processing reach the dyeing water water standard.
2, technical scheme
A kind of method of resin adsorption method treatment of dyeing and printing bio-chemical effluent, its step comprises:
1) dyeing waste water is after the anaerobic-aerobic biochemical treatment, through leaving standstill supernatant liquid is filtered, remove the suspension of influence absorption, under the flow velocity of 0.5～10BV/h, through being filled with ion-exchange and the adsorbent equipment that adsorbs composite function resin, adsorption temp is 0～40 ℃;
2) be 3%～8% alkalescence, acid inorganic desorbing agent desorption successively with the saturated resin weight percent concentration of absorption in the step 1), desorption conditions is 10～60 ℃, high dense desorption liquid enters the mud regulating reservoir, and low dense desorption liquid to biochemical front end carries out biochemical treatment or be used for the following batch desorbing agent of preparation recycling.
Above-mentioned steps 1) resin in is selected ion-exchange and adsorption dual functional resin for use, preferred NDA-99, NDA-88, NDA-150 ion-exchange and adsorption dual functional resin (Ge De Environmental Protection Technology Co., Ltd of Nanjing University).
Will be through being filled with the fixed bed or the moving bed adsorbent equipment of ion-exchange and adsorption dual functional resin under waste water that anaerobic-aerobic biochemical treatment and filtration treatment are crossed condition at 0～40 ℃ and 0.5～10BV/h, organic inorganic matter that reaches such as colour former, the big molecule of difficult degradation is adsorbed on the resin, waste water COD after the absorption is not higher than 40mg/L, and other each index reaches the dyeing water water standard.
Step 2) alkalescence, acid inorganic desorbing agent described in desorption successively are followed successively by alkaline desorbing agent desorption, wash with water to neutral, acid desorbing agent and carry out desorption, wash with water to neutrality, alkaline desorbing agent desorption, wash with water to neutrality.The alkalescence desorbing agent concentration that is weight percentage is 3%～8% NaOH solution, and the acid compound desorbing agent concentration that is weight percentage is 3%～8% HCl solution.
Resin adsorption effluent reuse each link in produce among the present invention, high dense desorption liquid can enter the mud regulating reservoir of biochemical system, and low dense desorption liquid is back to biochemical front end or is used for the preparation of following batch desorbing agent.
3, beneficial effect
The invention provides advanced treating and recycling method that resin is used for dyeing waste water, the difficulty that exists at the complexity of dyeing waste water and traditional desorption method, adopt new combination separating process, had the remarkable advantage that technology is simple, easy to operate, automaticity is high, operating cost is low, treatment effect is good.Dyeing waste water water outlet COD after biochemical treatment is 100-300mg/L, can not directly discharge, and is very far away apart from reuse standard.After the present invention's processing, COD can be reduced to and be not higher than 40mg/L, colourity is reduced to water white transparency, reaches the dyeing water water standard, make bio-chemical effluent further finish reuse on the basis of discharge standard reaching, realized the minimizing and the resource of dyeing waste water.
The specific embodiment
Below further specify the present invention by specific embodiment, the following percent concentration concentration that is weight percentage.
Embodiment 1
With 10mL composite function resin such as the NDA-88 strap clamp cover diameter of packing into is in the glass adsorption column of 8mm.Leave standstill a moment to dyeing waste water biochemical treatment tail water, cross the leaching supernatant liquid, at room temperature with the flow velocity of 40mL/h (40mL/h is 4BV/h with the ratio of resin volume 10mL, promptly per hour 4 resin bed volumes) by resin bed, treating capacity is that 10000mL/ criticizes.The primary water COD that dissolves is 298mg/L, and water outlet COD is 38mg/L after resin adsorption, and water white transparency, COD clearance are 87.2%.
Under 60 ℃, use HCl liquid, the 40mL water of NaOH liquid, 40mL water, the 10mL6% of 10mL8%, NaOH liquid and the 40mL running water adverse current desorption and regeneration resin bed of 10mL6% successively, the desorption flow is 20mL/h, the desorption rate of COD is more than 98%.Resin adsorption effluent reuse each link in produce, high dense desorption liquid can enter the mud regulating reservoir of biochemical system, and low dense desorption liquid is back to biochemical front end or is used for the preparation of following batch desorbing agent.
Embodiment 2
Other operating condition is with embodiment 1, absorption flow is doubled, pass through resin bed through the flow with 80mL/h after the preliminary treatment, the adsorption treatment effect is as follows: the primary water COD that dissolves is 298mg/L, absorption effluent COD is 48mg/L, and the clearance of COD is 83.9%.
Under 10 ℃, successively
The NaOH of the HCl liquid of the NaOH liquid of mL 6%, 40mL water, 20mL3%, 40mL water, 20mL3%
40mL running water adverse current desorption and regeneration resin bed, the desorption flow is 10mL/h, the desorption rate of COD is
More than.Resin adsorption effluent reuse each link in produce, high dense desorption liquid can enter the mud regulating reservoir of biochemical system, appoints dense desorption liquid to be back to biochemical front end or is used for the preparation of following batch desorbing agent.
Embodiment 3
Other operating condition is with embodiment 1, and the primary water COD that dissolves is 126mg/L, and the flow with 80mL/h after preliminary treatment passes through resin bed, and treating capacity is that 18000mL/ criticizes.Absorption effluent COD is 25mg/L, and the clearance of COD is 80.2%.
Under 30 ℃, use HCl liquid, the 40mL water of NaOH liquid, 40mL water, the 20mL8% of 30mL 3%, NaOH liquid and the 40mL running water adverse current desorption and regeneration resin bed of 20mL3% successively, the desorption flow is 15mL/h, the desorption rate of COD is more than 96%.Resin adsorption effluent reuse each link in produce, high dense desorption liquid can enter the mud regulating reservoir of biochemical system, and low dense desorption liquid is back to biochemical front end or is used for the preparation of following batch desorbing agent.
Embodiment 4
Other operating condition is with embodiment 1, under 48 ℃, use HCl liquid, the 40mL water of 6% NaOH liquid, 40mL water, the 10mL6% of 10mL, NaOH liquid and the 40mL running water adverse current desorption and regeneration resin bed of 10mL3% successively, the desorption flow is 10mL/h, and the desorption rate of COD is more than 95%.
Embodiment 5
NDA-88 resin in the embodiment 1 is replaced with the NDA-99 resin, and under various flows and temperature, NDA-99 absorption effluent effect slightly is better than NDA-88, but the too late NDA-88 of desorption effect, desorption rate is 75%～88%.
Embodiment 6
With the 10mL NDA-150 resin strap clamp cover diameter of packing into is the glass adsorption column of 8mm.Biochemical treatment tail water is filtered, and at room temperature the flow velocity with 80mL/h passes through resin bed, and treating capacity is that 10000mL/ criticizes.The primary water COD that dissolves is 126mg/L, and water outlet COD is 29mg/L after resin adsorption, and water white transparency, COD clearance are 77.0%.
NDA-150 resin after absorption carries out the regeneration of steam stripping, and the temperature of steam is 130 ℃, and the stripping time is 10 minutes, and the desorption volume is 6BV, and resin can recover adsorption capacity behind desorption and regeneration, and effect is not as alkalescence, acid inorganic desorbing agent desorption successively.
Embodiment 7
Select the NDA-88 resin for use, adopt the moving bed adsorption technology, mainly comprise equipment such as adsorption tower and desorption column.Adsorption tower is of a size of Φ * H=2.0 * 10.0m, and retention time of sewage is 0.2h, and dischargeable capacity is about 30m
3Desorption column is of a size of Φ * H=1.4 * 8.0m, and the design desorption liquid time of staying is 6.6h, and dischargeable capacity is about 10m
3The primary water that dissolves adds at the bottom of adsorption tower after the BAF preliminary treatment, is discharged by the absorption cat head after resin adsorption.Resin is gone into by the adsorption tower jacking, rely on gravity to do to move down, and it is saturated and by discharging at the bottom of the adsorption tower, add from the desorption cat head by the resin transfer device progressively to reach absorption again in order to dense state, through being expelled to the absorption cat head at the bottom of by desorption column behind the desorption and regeneration, recycle.Alkali lye adds at the bottom of desorption column, and to being discharged by the desorption cat head after the resin regeneration, desorption liquid enters sludge-tank and handles.The primary water COD that dissolves is about 300mg/L, reduces to below the 40mg/L water outlet water white transparency after this method is handled.Behind alkali liquid regeneration, desorption rate reaches more than 98%.
Claims (5)
1. a resin is used for the advanced treating and the recycling method of dyeing waste water, and its step comprises:
A) dyeing waste water filters supernatant liquid through leaving standstill after biochemical treatment, and under the flow velocity of 0.5～10BV/h, through being filled with ion-exchange and the adsorbent equipment that adsorbs composite function resin, adsorption temp is 0～40 ℃;
B) be 3%～8% alkalescence, acid inorganic desorbing agent desorption successively with the saturated resin weight percent concentration of absorption in the step a), desorption conditions is 10～60 ℃, high dense desorption liquid enters the mud regulating reservoir, and low dense desorption liquid to biochemical front end carries out biochemical treatment or be used for the following batch desorbing agent of preparation recycling.
2, a kind of resin according to claim 1 is used for the advanced treating and the recycling method of dyeing waste water, it is characterized in that ion-exchange described in the step a) and absorption composite function resin are NDA-88, NDA-99 or NDA-150 resin.
3, a kind of resin according to claim 2 is used for the advanced treating and the recycling method of dyeing waste water, it is characterized in that described in the step b) alkalescence, acid inorganic desorbing agent successively desorption be followed successively by alkaline desorbing agent desorption, wash with water to neutral, acid desorbing agent and carry out desorption, wash with water, wash with water to neutrality to neutrality, alkaline desorbing agent desorption.
4, a kind of resin according to claim 3 is used for the advanced treating and the recycling method of dyeing waste water, it is characterized in that the alkaline desorbing agent concentration that is weight percentage is 3%～8% NaOH solution, the acid compound desorbing agent concentration that is weight percentage is 3%～8% HCl solution.
5, be used for the advanced treating and the recycling method of dyeing waste water according to each described a kind of resin in the claim 1～4, it is characterized in that adsorbent equipment is fixed bed or moving bed in the step a).
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| CNB2007100256588A CN100569356C (en) | 2007-08-10 | 2007-08-10 | A kind of resin is used for the advanced treating and the recycling method of dyeing waste water |
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| CNB2007100256588A CN100569356C (en) | 2007-08-10 | 2007-08-10 | A kind of resin is used for the advanced treating and the recycling method of dyeing waste water |
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| CN100569356C true CN100569356C (en) | 2009-12-16 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838025B (en) * | 2010-04-07 | 2013-03-27 | 南京大学 | Method for removing organic pollutants from underground water by using resin based permeable reactive barrier (PRB) technology |
| CN101863530B (en) * | 2010-07-07 | 2012-11-28 | 南京大学 | Continuous advanced treatment system of heavy metal ion-containing tail water and treatment method |
| CN101880071B (en) * | 2010-07-14 | 2013-02-06 | 南京大学 | Continuous high ammonia-nitrogen tail water deep treatment system and treatment method |
| CN102050554B (en) * | 2010-11-24 | 2012-09-26 | 南京大学 | Treatment method of high-concentration resin desorption liquid after deep purification of wastewater |
| CN105541009B (en) * | 2015-12-23 | 2019-02-01 | 燕山大学 | A kind of processing method of anionic azo dyes waste water |
| CN105668848B (en) * | 2016-01-19 | 2018-11-23 | 青岛大学 | A kind of synchronous decoloration of printing waste water and nitrogen recovery method |
| CN106348551B (en) * | 2016-11-17 | 2019-03-05 | 南京大学 | A kind of dyeing biochemical tail water toxicity reduction, reclaiming system and processing method |
| CN107364920A (en) * | 2017-08-11 | 2017-11-21 | 江苏海普功能材料有限公司 | A kind of method that the waste water containing pyridine is handled using absorption method |
| CN108751573B (en) * | 2018-05-21 | 2021-04-06 | 浙江工业大学 | BAME treatment and recycling method for printing and dyeing wastewater |
| CN110171910B (en) * | 2019-06-20 | 2020-04-14 | 海南中橡科技有限公司 | Deep treatment method for glue making wastewater |
| CN110316911A (en) * | 2019-07-24 | 2019-10-11 | 杭州深瑞水务有限公司 | A kind for the treatment of process of the high full qualified discharge of hardly degraded organic substance waste water |
| CN110668637A (en) * | 2019-09-18 | 2020-01-10 | 海绵城市投资有限公司 | Pit and pond wastewater treatment method and device |
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Address after: 210093 Hankou Road, Jiangsu, China, No. 22, No. Co-patentee after: Jiangsu N&J Environmental Technology Co., Ltd. Patentee after: Nanjing University Address before: 210093 Hankou Road, Jiangsu, China, No. 22, No. Co-patentee before: Jiangsu NJU Gede Environmental Protection Technology Co., Ltd. Patentee before: Nanjing University |
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Address after: 210093 No. 22, Hankou Road, Nanjing, Jiangsu Co-patentee after: Jiangsu NJU Environmental Technology Co., Ltd. Patentee after: Nanjing University Address before: 210093 No. 22, Hankou Road, Nanjing, Jiangsu Co-patentee before: Jiangsu N&J Environmental Technology Co., Ltd. Patentee before: Nanjing University |
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