CN105152244B - A kind of processing method of Sudan red dyes waste water - Google Patents

Abstract

The invention discloses a kind of processing method of Sudan red dyes waste water, belong to technical field of waste water processing.The present invention first adds polyacrylamide in clear water, sodium peroxide and starch from sweet potato are sequentially added after stirring, stand afterwards and filter to obtain sediment, then sediment is air-dried and crushed after freezing, and be well mixed with Chrysosplenium nudicaule Bunge extract solution, OTAC and aluminium polychloride, mixed liquor is obtained, finally adds mixed liquor in pending waste water from dyestuff, you can.Example proves that this case method is simple and easy to apply, and not only operation is simple so that operating cost is reduced, and secondary pollution is there will not be for environment, and processing is thorough, and clearance is up to more than 98% so that colourity and COD concentration reach discharge standard.

Description

A kind of processing method of Sudan red dyes waste water

Technical field

The invention discloses a kind of processing method of Sudan red dyes waste water, belong to technical field of waste water processing.

Background technology

Weaving, dyeing are one of China's leading industrys, although substantial amounts of labor has been received in thousands of weavings, printing and dyeing Power, but the waste water from dyestuff of its discharge causes serious threat to environment and water safety simultaneously, particularly on south water to north edge The weaving of line, the enterprise of printing and dyeing are required for meeting strict sewage drainage standard, otherwise will face the destiny of stopping production.In addition dyestuff Composition is increasingly intended to anti-oxidant, anti-light solution, antibiont degraded, and its COD concentration and colourity all more and more highers, so just It is required that dye wastewater treatment technology needs continuous progress.In addition, substantial amounts of phenyl ring, naphthalene nucleus, amino are contained in dye molecule With the group such as azo, it is produced, and waste component is complicated, and colourity is deep, there is peculiar smell, and organic matter and inorganic salt content are high, to health Great threat can be produced, so waste water from dyestuff contamination control is extremely urgent.

With the development of chemical engineering industry, dye species increase, and the number of rings increase in structure, carbochain increases, and dye radical is very Many, the BOD/COD ratios of waste water decline, thus waste water becomes to be difficult to biochemical treatment.But also there are many processing dyestuffs to give up at present The method of water, absorption method, Coagulation Method, magnetic separation method, chemical oxidization method, electrochemical process and biochemical process etc., these method advantage and disadvantage It is all apparent.

For absorption method, water quality is good and stably after it is handled, without secondary pollution, with important in dye wastewater treatment Status, conventional adsorbent includes activated carbon and resin etc., and the method is to going dissolved organic matter in water removal highly effective, but again Raw relatively difficult, processing cost is higher, application surface is narrow.Coagulation Method is that current dye wastewater treatment is most economical, most efficient method, Its major advantage is that equipment investment is few, floor space is few, technological process is simple, convenient operation and management, hydrophobic dye is decolourized Efficiency is very high；Have the disadvantage that operating cost is higher, body refuse amount big and dehydration is because difficult, applicable pH value range is narrow, to hydrophilic dye Poor processing effect.Magnetic separation method is that the particulate in water body is magnetized to the method separated again in advance.As a kind of water process new technology, It is available for the magnetization technology of industrial application to be mainly magnetic agglomeration process, molysite coprecipitation, Powder by Iron Powder, ferrite process etc. now.Film The major way that partition method is applied to azo dye wastewater processing is ultrafiltration and counter-infiltration.In ultra-filtration process, film surface pore Size is major control factors；Counter-infiltration is to apply point that certain pressure realizes water and dyestuff for motive force on pellicle From, and carry out dyestuff recovery.Chemical oxidization method degrading azoic dye waste water is to utilize strong oxidizer oxidation dye molecule, destroys it Chromophore, reduces the colourity and COD value of waste water, improves the biodegradability of waste water, reaches a kind of method of purification waste water.Chemical oxygen The subject matter that change method is present is that processing cost is high；Catalyst can not be reclaimed；It is not strong that conventional oxidant shows oxidability, deposits The shortcomings of selective oxidation；And be readily incorporated impurity in processing procedure and cause secondary pollution.Electrochemical process for treating is most The advanced oxidation technology closely grown up, is in specific electrochemical reactor, by one using DC Electric Field Chemical reaction, electrochemical process or the physical process of Series Design, reach expected removal Pollutants in Wastewater or reclaim useful The purpose of material.Printing/dyeing waste water is handled using electrochemical method, with equipment it is small, take up an area less, operational management is simple, COD is gone The advantages of except rate height and good decolorizing effect, be a kind of " environment-friendly " technology.Biological treatment have have a wide range of application, treating capacity Greatly, low cost and other advantages, but also have obvious shortcoming to processing dyeing waste water：Microorganism is to nutriment, pH value, temperature etc. Condition there are certain requirements, it is difficult to adapts to the characteristics of dyeing waste water variation water quality is big, dye quantity is various, toxicity is high, and exists Floor space is larger, is difficult purification thoroughly, the shortcomings of colourity and COD concentration are difficult up to standard.

The content of the invention

Present invention mainly solves technical problem：For discharge waste water from dyestuff can not be effective using traditional absorption method at present Remove, and use Coagulation Method, biological treatment often to bring serious threat to environment band and water safety, not only remove Rate can not carry out large-scale use than relatively low, in addition, when removing waste water from dyestuff using oxidizing process, operating cost ratio Higher, colourity and COD concentration are difficult shortcoming up to standard there is provided a kind of processing method of Sudan red dyes waste water.This method is first First polyacrylamide is added in clear water, sodium peroxide and starch from sweet potato are sequentially added after stirring, filtering is stood afterwards Sediment, then will sediment air-dry freezing after crush, and with Chrysosplenium nudicaule Bunge extract solution, OTAC and Aluminium polychloride is well mixed, and is obtained mixed liquor, is finally added mixed liquor in pending waste water from dyestuff, you can.This method is not Only operation is simple so that operating cost is reduced, and secondary pollution is there will not be for environment, and processing is thorough so that color Degree and COD concentration reach discharge standard.

In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：

（1）20~30g polyacrylamides are taken to be put into 300~500mL clear water, after being stirred clockwise with stirring rod, 15~22g sodium peroxides and 30~35g starch from sweet potato are sequentially added, and continuation stirs 5~10min clockwise with stirring rod, Stand afterwards after 20~25min, with filtered through gauze, obtain sediment；

（2）It is placed in after sediment obtained above is air-dried in household freezer, design temperature is -7~-5 DEG C, 20~25min After take out, by airslide disintegrating mill be ground into particle diameter be 60~70nm powder, it is standby；

（3）The Chrysosplenium nudicaule Bunge that 1~2kg is fresh is taken, is cleaned with clear water after surface contaminants, is put into juice extractor and is squeezed, and Filtered with filtering gauze, remove slag, obtain Chrysosplenium nudicaule Bunge juice, then take 400~500g bodied ferric sulfates to be put into obtained Chrysosplenium nudicaule Bunge In juice, 15~18min is stirred clockwise, stands filtered again with filtering gauze after 25~30min afterwards, obtain filtered fluid；

（4）By filtered fluid obtained above by D101 nonpolar macroporous adsorption resins, first it is eluted with water, water elution is straight The polar macroporous resins of DM130 were connected, then the nonpolar macroporous suctions of D101 are eluted with the carbon tetrachloride solution that concentration is 30~60% Attached resin, collects various concentrations carbon tetrachloride solution eluent, is concentrated and dried, obtains Chrysosplenium extract；

（5）Obtained Chrysosplenium extract is added to above-mentioned steps（2）In the powder of gained, stir, so The OTAC and Chrysosplenium extract quality 2~4% of gained powder quality 3~5% are sequentially added afterwards Aluminium polychloride, it is and well mixed with stirring rod, obtain mixed liquor；

（6）Mixed liquor obtained above is added in pending Sudan red dyes waste water, addition be 100~ 300mg/L, is stirred, you can.

The present invention application process be：The mixed liquor obtained by 1~3mL present invention is taken to be diluted with running water after 10 times, horse On be put into the pending Sudan red dyes waste water of 1 pending~2L, and stirred with agitator with 300~350r/min speed 30~40s is mixed, 10~15min is stood afterwards, then finally used with 80~100r/min speed 3~5min of stirring with agitator Detector detects colourity and COD, testing result be colourity from 50~60mg/L, be reduced to 10~12mg/L, COD from 15~ 25mg/L is reduced to 0.3~0.45mg/L, has reached waste water from dyestuff discharge standard.

The beneficial effects of the invention are as follows：

（1）Operation is simple for this method so that operating cost is reduced, for environment also without secondary pollution；

（2）It is thorough for dye wastewater treatment so that colourity and COD concentration are reduced, and reach discharge standard.

Embodiment

20~30g polyacrylamides are taken to be put into 300~500mL clear water first, after being stirred clockwise with stirring rod, 15~22g sodium peroxides and 30~35g starch from sweet potato are sequentially added, and continuation stirs 5~10min clockwise with stirring rod, Stand afterwards after 20~25min, with filtered through gauze, obtain sediment；Then freezing is placed in after sediment obtained above is air-dried In case, design temperature is -7~-5 DEG C, is taken out after 20~25min, and it is 60~70nm's to be ground into particle diameter by airslide disintegrating mill Powder, it is standby；The fresh Chrysosplenium nudicaule Bunges of 1~2kg then are taken, is cleaned with clear water after surface contaminants, is put into juice extractor and is squeezed, And filtered with filtering gauze, remove slag, obtain Chrysosplenium nudicaule Bunge juice, then take 400~500g bodied ferric sulfates to be put into obtained golden waist In grass juice factor, 15~18min is stirred clockwise, stands filtered again with filtering gauze after 25~30min afterwards, obtain filtered fluid； Next filtered fluid obtained above is first eluted with water by D101 nonpolar macroporous adsorption resins, water elution is directly led to The polar macroporous resins of DM130 are crossed, then are set with concentration for 30~60% nonpolar macroporous absorption of carbon tetrachloride solution elution D101 Fat, collects various concentrations carbon tetrachloride solution eluent, is concentrated and dried, obtains Chrysosplenium extract；Obtained Chrysosplenium nudicaule Bunge is carried Take thing to be added in the powder obtained by above-mentioned steps, stir, then sequentially add gained powder quality 3~5% OTAC and Chrysosplenium extract quality 2~4% aluminium polychloride, and mix equal with stirring rod It is even, obtain mixed liquor；Finally mixed liquor obtained above is added in pending Sudan red dyes waste water, addition is 100~300mg/L, is stirred, you can.

Example 1

Take 20g polyacrylamides to be put into 300mL clear water first, after being stirred clockwise with stirring rod, then add successively Enter 15g sodium peroxides and 30g starch from sweet potato, and 5min is stirred in continuation with stirring rod clockwise, is stood afterwards after 20min, is used yarn Cloth is filtered, and obtains sediment；Then it is placed in after sediment obtained above is air-dried in household freezer, design temperature is -7 DEG C, 20min After take out, by airslide disintegrating mill be ground into particle diameter be 60nm powder, it is standby；The fresh Chrysosplenium nudicaule Bunges of 1kg then are taken, clear water is used Clean after surface contaminants, be put into juice extractor and squeezed, and filtered with filtering gauze, remove slag, obtain Chrysosplenium nudicaule Bunge juice, then Take 400g bodied ferric sulfates to be put into obtained Chrysosplenium nudicaule Bunge juice, 15min is stirred clockwise, stand afterwards after 25min again with filtering Gauze is filtered, and obtains filtered fluid；Next filtered fluid obtained above is first used by D101 nonpolar macroporous adsorption resins Water elution, water elution elutes D101 directly by the polar macroporous resins of DM130, then with the carbon tetrachloride solution that concentration is 30% Nonpolar macroporous adsorption resin, collects various concentrations carbon tetrachloride solution eluent, is concentrated and dried, obtains Chrysosplenium extract； Obtained Chrysosplenium extract is added in the powder obtained by above-mentioned steps, stirred, institute is then sequentially added Powder quality 3% OTAC and Chrysosplenium extract quality 2% aluminium polychloride, and with stir Rod is well mixed, and obtains mixed liquor；Finally mixed liquor obtained above is added in pending Sudan red dyes waste water, plus Enter amount for 100mg/L, stir, you can.

This example operation is simple and easy to apply, during operation, takes the mixed liquor obtained by the 1mL present invention to dilute 10 times with running water Afterwards, it is immediately placed into the pending Sudan red dyes waste water of pending 1L, and is stirred with agitator with 300r/min speed 30s, stands 10min, then finally detect colourity and COD with detector with agitator with 80r/min speed stirring 3min afterwards , testing result be colourity from 50mg/L, be reduced to 10mg/L, COD is reduced to 0.3mg/L from 15mg/L, and clearance reaches 98%, meet waste water from dyestuff discharge standard.

Example 2

Take 25g polyacrylamides to be put into 400mL clear water first, after being stirred clockwise with stirring rod, then add successively Enter 20g sodium peroxides and 33g starch from sweet potato, and 8min is stirred in continuation with stirring rod clockwise, is stood afterwards after 23min, is used yarn Cloth is filtered, and obtains sediment；Then it is placed in after sediment obtained above is air-dried in household freezer, design temperature is -3 DEG C, 23min After take out, by airslide disintegrating mill be ground into particle diameter be 65nm powder, it is standby；The fresh Chrysosplenium nudicaule Bunges of 1.5kg then are taken, with clear Water is cleaned after surface contaminants, is put into juice extractor and is squeezed, and is filtered with filtering gauze, is removed slag, is obtained Chrysosplenium nudicaule Bunge juice, so Take 450g bodied ferric sulfates to be put into obtained Chrysosplenium nudicaule Bunge juice afterwards, 17min is stirred clockwise, stand afterwards used again after 28min Filter gauze is filtered, and obtains filtered fluid；Next it is first by filtered fluid obtained above by D101 nonpolar macroporous adsorption resins It is eluted with water, water elution is eluted directly by the polar macroporous resins of DM130, then with concentration for 50% carbon tetrachloride solution D101 nonpolar macroporous adsorption resins, collect various concentrations carbon tetrachloride solution eluent, are concentrated and dried, and obtain Chrysosplenium nudicaule Bunge extraction Thing；Obtained Chrysosplenium extract is added in the powder obtained by above-mentioned steps, stirred, is then sequentially added The OTAC of gained powder quality 4% and the aluminium polychloride of Chrysosplenium extract quality 3%, and with stirring Mix rod to be well mixed, obtain mixed liquor；Finally mixed liquor obtained above is added in pending Sudan red dyes waste water, Addition is 200mg/L, is stirred, you can.

This example operation is simple and easy to apply, during operation, takes the mixed liquor obtained by the 2mL present invention to dilute 10 times with running water Afterwards, it is immediately placed into the pending Sudan red dyes waste water of pending 1.5L, and is stirred with agitator with 320r/min speed Mix 35s, stand 13min afterwards, then 4min stirred with 90r/min speed with agitator, finally with detector detect colourity and COD, testing result be colourity from 55mg/L, be reduced to 11mg/L, COD is reduced to 0.4mg/L, clearance from 21mg/L 98.1% is reached, meets waste water from dyestuff discharge standard.

Example 3

Take 30g polyacrylamides to be put into 500mL clear water first, after being stirred clockwise with stirring rod, then add successively Enter 22g sodium peroxides and 35g starch from sweet potato, and 10min is stirred in continuation with stirring rod clockwise, is stood afterwards after 25min, is used yarn Cloth is filtered, and obtains sediment；Then it is placed in after sediment obtained above is air-dried in household freezer, design temperature is -5 DEG C, 25min After take out, by airslide disintegrating mill be ground into particle diameter be 70nm powder, it is standby；The fresh Chrysosplenium nudicaule Bunges of 2kg then are taken, clear water is used Clean after surface contaminants, be put into juice extractor and squeezed, and filtered with filtering gauze, remove slag, obtain Chrysosplenium nudicaule Bunge juice, then Take 500g bodied ferric sulfates to be put into obtained Chrysosplenium nudicaule Bunge juice, 18min is stirred clockwise, stand afterwards after 30min again with filtering Gauze is filtered, and obtains filtered fluid；Next filtered fluid obtained above is first used by D101 nonpolar macroporous adsorption resins Water elution, water elution elutes D101 directly by the polar macroporous resins of DM130, then with the carbon tetrachloride solution that concentration is 60% Nonpolar macroporous adsorption resin, collects various concentrations carbon tetrachloride solution eluent, is concentrated and dried, obtains Chrysosplenium extract； Obtained Chrysosplenium extract is added in the powder obtained by above-mentioned steps, stirred, institute is then sequentially added Powder quality 5% OTAC and Chrysosplenium extract quality 4% aluminium polychloride, and with stir Rod is well mixed, and obtains mixed liquor；Finally mixed liquor obtained above is added in pending Sudan red dyes waste water, plus Enter amount for 300mg/L, stir, you can.

This example operation is simple and easy to apply, during operation, takes the mixed liquor obtained by the 3mL present invention to dilute 10 times with running water Afterwards, it is immediately placed into the pending Sudan red dyes waste water of pending 2L, and is stirred with agitator with 350r/min speed 40s, stands 15min afterwards, then with 100r/min speed stirs 5min with agitator, finally with detector detect colourity and COD, testing result be colourity from 60mg/L, be reduced to 12mg/L, COD is reduced to 0.45mg/L, clearance from 25mg/L 98.2% is reached, meets wastewater discharge standard.

Claims (1)

1. a kind of processing method of Sudan red dyes waste water, it is characterised in that concrete operation step is：

（1）20~30g polyacrylamides are taken to be put into 300~500mL clear water, after being stirred clockwise with stirring rod, then according to Secondary addition 15~22g sodium peroxides and 30~35g starch from sweet potato, and 5~10min is stirred in continuation with stirring rod clockwise, afterwards Stand after 20~25min, with filtered through gauze, obtain sediment；

（2）It is placed in after sediment obtained above is air-dried in household freezer, design temperature is -7~-5 DEG C, is taken after 20~25min Go out, the powder that particle diameter is 60~70nm is ground into by airslide disintegrating mill, it is standby；

（3）The Chrysosplenium nudicaule Bunge that 1~2kg is fresh is taken, is cleaned with clear water after surface contaminants, is put into juice extractor and is squeezed, and it is used Filter gauze is filtered, and is removed slag, is obtained Chrysosplenium nudicaule Bunge juice, then takes 400~500g bodied ferric sulfates to be put into obtained Chrysosplenium nudicaule Bunge juice, 15~18min of stirring, stands filtered again with filtering gauze after 25~30min afterwards, obtain filtered fluid clockwise；

（4）By filtered fluid obtained above by D101 nonpolar macroporous adsorption resins, first it is eluted with water, water elution is directly led to The polar macroporous resins of DM130 are crossed, then are set with concentration for 30~60% nonpolar macroporous absorption of carbon tetrachloride solution elution D101 Fat, collects various concentrations carbon tetrachloride solution eluent, is concentrated and dried, obtains Chrysosplenium extract；

（5）Obtained Chrysosplenium extract is added to above-mentioned steps（2）In the powder of gained, stir, Ran Houzai Sequentially add the OTAC of gained powder quality 3~5% and gathering for Chrysosplenium extract quality 2~4% Aluminium chloride is closed, and it is well mixed with stirring rod, obtain mixed liquor；

（6）Mixed liquor obtained above is added in pending Sudan red dyes waste water, addition is 100~300mg/ L, is stirred, you can.