CN1903737A - Technology of circulating purifying dyestuff waste water by reactivating inorganic composite catalytic material - Google Patents
Technology of circulating purifying dyestuff waste water by reactivating inorganic composite catalytic material Download PDFInfo
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Abstract
The present invention belongs to a process for circularly cleaning dyes waste water, in particular, it relates to a process for circularly cleaning dyes waste water by using reactivated inorganic compound catalytic material. It is characterized by that said process includes the following steps: (1), catalytic cracking and decolorization cleaning dyes industrial waste water treatment: adding activated inorganic compound catalytic material into dyes industrial waste water whose absorbance is 0.20-3.00 according to that the ratio of reactivated inorganic compound catalytic material: dyes industrial waste water is equal to 0.5-20g:100ml, stirring adsorption and making catalytic reaction for 5-60min; (2), regenerating activated inorganic compound catalytic material: making the above-mentioned saturation adsorbed activated inorganic compound catalytic material undergo the processes of centrifugal filtering, dewatering, drying and reactivation calcining for 0.5-4hr at 200-700deg.C so as to obtain the regenerated activated inorganic compound catalytic material; and (3), using regenerated activated inorganic compound catalytic material to circularly catalytically-crack the dyes industrial waste water and decolourize and clean the dyes industrial waste water.
Description
Technical field
The present invention relates to a kind of technology of circulating purifying dyestuff waste water.
Background technology
The dye well dyeing waste water is that a big class contains organic color base group organism that causes, and difficulty of governance is big.It has the colourity height, the moiety complexity, and discharge of wastewater has intermittence, characteristics such as difficult for biological degradation.Organic composition is aromatic hydrocarbons and heterogeneous ring compound mostly, wherein has all kinds of colour developing groups (N=N-,-N=O etc.) and polar group (SO
3,-OH ,-NH
2), also may contain halides, aniline, phenols and various organic additive.(COD) is higher for chemical oxygen demand (COD), and biochemical oxygen demand (BOD) (BOD
5) relatively low, biodegradability is relatively poor.
The dye well dyeing waste water often adopts ordinary methods such as filtration, neutralisation, adsorption precipitation method, activated sludge process, oxidation style.Up to the present, various decoloring methods all have certain defective from economy, technical, practicality with to the influence of environment.A conventional adsorption bleaching absorbing dye and do not destroy its organic molecular structure, therefore, conventional absorption is a kind of phase transition of pollutent and produces secondary pollution.The little difficult again regeneration of adsorbents adsorb amount commonly used at present.Advanced oxidation processes good decolorizing effect but cost an arm and a leg and limited applying of this technology.
Summary of the invention
The object of the present invention is to provide a kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, this technology is simple, with low cost, non-secondary pollution, catalyzed degradation capable of circulation, decolorizing purification dying industrial wastewater.
To achieve these goals, technical scheme of the present invention is: a kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water is characterized in that it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: activated inorganic composite catalyst material is added absorbancy (colourity) in the dying industrial wastewater of 0.20-3.00, the consumption of activated inorganic composite catalyst material is pressed activated inorganic composite catalyst material: dying industrial wastewater=0.5-20g: 100ml adds, whip attachment, catalyzed reaction 5-60min;
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 200 ℃ of-700 ℃ of following reactivate roastings 0.5-4 hour, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 88%-93%;
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled repeating step 2), circulate catalyzed degradation, decolouring of dying industrial wastewater handled.
The mixing speed of described step 1) is 50-200rpm.
The temperature of reaction of described step 1) is 5-80 ℃.
Described step 2) reactivating temperature is 450-650 ℃.
The preparation of described activated inorganic composite catalyst material: choose by mass percentage: layered silicate rectorite leng 10-30, portlandite 15-40, lime carbonate 20-60, silicon-dioxide 5-20; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the mixture under 200 ℃ of-700 ℃ of conditions calcination for activation 1-4 hour of sieving; Pack activated inorganic composite catalyst material.
Activated inorganic composite catalyst material mainly is adsorptivity and ion exchangeable and a stable thermal performance of utilizing its layered silicate rectorite leng structure; Calcium constituent in portlandite, the lime carbonate is crosslinked with the cationic exchange formation inorganic polymer of rectorite leng interlayer duct internal surface on the one hand, make rectorite leng generate " layer post " structure, thereby the hole and the passage that form are difficult for subsiding, inorganic polymer-the cross-linked rectorite of Xing Chenging like this, its interlamellar spacing d (001) increases to 3.80nm by 2.4nm, and its Stability Analysis of Structures is constant when heating 200 ℃-700 ℃.On the other hand, the alkaline matter that portlandite, lime carbonate are class chemically reactive height, apparent porosity is big.The existence of the surface alkalinty group particularly existence of hydroxyl not only makes portlandite, lime carbonate have very strong adsorptive power, and has strong oxidation catalysis characteristic.
Activated inorganic composite catalyst material after activated inorganic composite catalyst material of the present invention and the regeneration possesses high chemically reactive, good absorption and oxidation catalysis characteristic.The ionic dyes organism that is used to decolour, percent of decolourization can reach 97.0%-99.9%.Different with conventional absorption principle is that the activated inorganic composite catalyst material decolouring that the present invention prepares is based on activated inorganic composite catalyst material surface adsorption dyestuff colour developing group, be activated the oh group oxidation catalysis on inorganic composite catalyst material surface simultaneously, thereby destroy the degradation and decolorization that dyestuff organic molecule structure realizes dyestuff colour developing group.The reactivating inorganic composite catalytic material circulation is used for catalyzed degradation, the decolorizing purification of dyestuff organism trade effluent.Also can be used safely in catalysis, absorption and food and filter decolouring.
Described activated inorganic composite catalyst material is layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide, is nontoxic being easy to get, and is cheap, and physicochemical property are stable, the inorganic non-metallic raw mineral materials of environmental friendliness and reusable edible.
The degradation and decolorization to dye molecule is finished in saturated absorption simultaneously under the oxidation catalysis effect of hydroxyl radical free radical.Circulation adsorption catalysis degradation and decolorization dyestuff novel process compare with traditional adsorption precipitation decolouring technology have low cost, the characteristic of high-level efficiency, non-secondary pollution.It is a kind of saving type environmental friendliness novel process.
Characteristics of the present invention are: centrifuge dehydration separates the activated inorganic composite catalyst material of saturated absorption, can repair the chemically reactive of activated inorganic composite catalyst material; Catalyzed degradation, decolorizing purification waste water from dyestuff and non-secondary pollution can be recycled; The characteristic that has both absorption and catalyzed degradation; Be a kind of high-level efficiency, saving type environmental friendliness novel process.
The invention has the beneficial effects as follows: this technology is simple, with low cost, non-secondary pollution, good reproducibility, physical and chemical performance stable, catalyzed degradation capable of circulation, decolorizing purification dying industrial wastewater.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: choose by mass percentage: layered silicate rectorite leng 30, portlandite 26, lime carbonate 33, silica 11; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the mixture calcination for activation 3 hours under 350 ℃ of conditions that sieves; Pack activated inorganic composite catalyst material; (2) getting 2g (gram) activated inorganic composite catalyst material, 100ml (milliliter) absorbancy is 0.232 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.007, percent of decolourization 97.0%.
2) regeneration activating inorganic composite catalyst material:,, get the regeneration activating inorganic composite catalyst material in 550 ℃ of following reactivate roastings 1 hour with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry; The rate of recovery is 90%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 2g regeneration activating inorganic composite catalyst material, 100ml absorbancy and be 0.260 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.009, percent of decolourization 99.5%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 2:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: be by mass percentage: layered silicate rectorite leng 30, portlandite 26, lime carbonate 33, silica 11 are chosen layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the mixture calcination for activation 3 hours under 350 ℃ of conditions that sieves; Pack activated inorganic composite catalyst material; (2) getting 10g activated inorganic composite catalyst material, 100ml absorbancy is 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.009, percent of decolourization 99.6%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 550 ℃ of following reactivate roasting 45min, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 90%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get activated inorganic composite catalyst material, 100ml absorbancy after the 10g regeneration and be 1.983 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.006, percent of decolourization 99.7%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 3:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation decolorizing purification dying industrial wastewater is handled: the preparation of (1) activated inorganic composite catalyst material: be by mass percentage: layered silicate rectorite leng 10, portlandite 36, lime carbonate 43, silica 11 are chosen layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 1 hour under 350 ℃ of conditions that sieves; Pack activated inorganic composite catalyst material; (2). get 2g activated inorganic composite catalyst material, 100m1 absorbancy and be 0.232 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-100 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.024, percent of decolourization 89.7%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 200 ℃ of following reactivate roastings 4 hours, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 93%.
3 activated inorganic composite catalyst materials after will regenerating are used for catalyzed degradation, the decolorizing purification dying industrial wastewater of step 1) to be handled, get activated inorganic composite catalyst material, 100ml absorbancy after the 2g regeneration and be 0.260 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.027, percent of decolourization 89.6%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 4:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) decolouring, purifying dyestuff Industrial Wastewater Treatment: the preparation of (1) activated inorganic composite catalyst material: layered silicate rectorite leng 26, portlandite 26, lime carbonate 43, silicon-dioxide 5 are chosen layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 3 hours under 350 ℃ of conditions that sieves; Pack product.(2) getting 4g activated inorganic composite catalyst material, 100ml absorbancy is 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.045, percent of decolourization 98.2%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 400 ℃ of following reactivate roastings 2 hours, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 91%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get activated inorganic composite catalyst material, 100ml absorbancy after the 2g regeneration and be 0.260 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.015, percent of decolourization 94.2%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 5:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: be by mass percentage: layered silicate rectorite leng 23, portlandite 26, lime carbonate 43, silicon-dioxide 8 are chosen layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 3 hours under 350 ℃ of conditions that sieves; Pack product.(2) getting 6g activated inorganic composite catalyst material, 100ml absorbancy is 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.019, percent of decolourization 99.2%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 550 ℃ of following reactivate roastings 0.5 hour, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 90%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 10g reactivating inorganic composite catalytic material, 100ml absorbancy and be 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.004, percent of decolourization 99.8%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 6: a kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: choose by mass percentage: layered silicate rectorite leng 30, portlandite 26, lime carbonate 33, silica 11; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 3 hours under 350 ℃ of conditions that sieves; Pack product.(2) getting 10g activated inorganic composite catalyst material, 100ml absorbancy is 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.009, percent of decolourization 99.6%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 600 ℃ of following reactivate roasting 60min, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 88%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 10g reactivating inorganic composite catalytic material, 100ml absorbancy and be 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is added in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time is 30min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.9%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 7: a kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: choose by mass percentage: layered silicate rectorite leng 20, portlandite 22, lime carbonate 50, silicon-dioxide 8; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture under 350 ℃ of conditions calcination for activation 1-4 hour of sieving; Pack product.(2) getting 20g activated inorganic composite catalyst material, 100ml absorbancy is 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material is added in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.004, percent of decolourization 99.8%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 650 ℃ of following reactivate roasting 45min, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 88%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 10g reactivating inorganic composite catalytic material, 100ml absorbancy and be 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time is 30min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.9%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 8:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: choose by mass percentage: layered silicate rectorite leng 20, portlandite 20, lime carbonate 55, silicon-dioxide 5; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 3 hours under 350 ℃ of conditions that sieves; Pack product.(2) getting 20g activated inorganic composite catalyst material, 100ml absorbancy is 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material is added in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 15min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.9%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 700 ℃ of following reactivate roasting 30min, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 88%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 10g reactivating inorganic composite catalytic material, 100ml absorbancy and be 2.45 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time is 30min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.89%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 9:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: be by mass percentage: layered silicate rectorite leng 20, portlandite 15, lime carbonate 60, silicon-dioxide 5 are chosen layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 1 hour under 200 ℃ of conditions that sieves; Pack product; (2). get 0.5g activated inorganic composite catalyst material, 100ml absorbancy and be 0.20 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 5min, centrifugal back waste water from dyestuff absorbancy 0.020, percent of decolourization 90.0%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 700 ℃ of following reactivate roasting 30min, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 88%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 10g reactivating inorganic composite catalytic material, 100ml absorbancy and be 3.0 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time is 30min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.9%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Embodiment 10:
A kind of technology of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water, it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: the preparation of (1) activated inorganic composite catalyst material: choose by mass percentage: layered silicate rectorite leng 20, portlandite 40, lime carbonate 20, silicon-dioxide 20; Layered silicate rectorite leng, portlandite, lime carbonate and silicon-dioxide are mixed and crushing screening 100um, get the mixture that sieves that particle diameter is less than or equal to 100um; Get the above-mentioned mixture calcination for activation 1 hour under 700 ℃ of conditions that sieves; Pack product; (2) getting 20g activated inorganic composite catalyst material, 100ml absorbancy is 3.0 azoic dyestuff trade effluent, activated inorganic composite catalyst material is sneaked in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time 30min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.9%.
2) regeneration activating inorganic composite catalyst material: with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry, in 700 ℃ of following reactivate roasting 30min, the activated inorganic composite catalyst material after must regenerating; The rate of recovery is 88%.
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled, get 10g reactivating inorganic composite catalytic material, 100ml absorbancy and be 3.0 azoic dyestuff trade effluent, activated inorganic composite catalyst material after the regeneration is added in the dying industrial wastewater, mixing speed is 50-200rpm, temperature of reaction is 5-80 ℃, adsorption time is 30min, centrifugal back waste water from dyestuff absorbancy 0.003, percent of decolourization 99.9%; Repeating step 2), dying industrial wastewater is carried out circular treatment.
Claims (4)
1. the technology of a reactivating inorganic composite catalytic material circulating purifying dyestuff waste water is characterized in that it comprises the steps:
1) catalyzed degradation, decolorizing purification dying industrial wastewater are handled: activated inorganic composite catalyst material is added in the dying industrial wastewater that absorbancy is 0.20-3.00, the consumption of activated inorganic composite catalyst material is pressed activated inorganic composite catalyst material: dying industrial wastewater=0.5-20g: 100ml adds, whip attachment, catalyzed reaction 5-60min;
2) regeneration activating inorganic composite catalyst material:,, get the regeneration activating inorganic composite catalyst material in 200 ℃ of-700 ℃ of following reactivate roastings 0.5-4 hour with the dehydration of the activated inorganic composite catalyst material centrifuging after the above-mentioned saturated absorption, oven dry;
3) catalyzed degradation, the decolorizing purification dying industrial wastewater that are used for step 1) of the activated inorganic composite catalyst material after will regenerating handled repeating step 2), dying industrial wastewater is carried out circular treatment.
2. the technology of a kind of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water according to claim 1 is characterized in that: the mixing speed of described step 1) is 50-200rpm.
3. the technology of a kind of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water according to claim 1 is characterized in that: the temperature of reaction of described step 1) is 5-80 ℃.
4. the technology of a kind of reactivating inorganic composite catalytic material circulating purifying dyestuff waste water according to claim 1 is characterized in that: reactivating temperature described step 2) is 450-650 ℃.
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| CNB2006100199650A CN100398455C (en) | 2006-08-10 | 2006-08-10 | Technology of circulating purifying dyestuff waste water by reactivating inorganic composite catalytic material |
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| CNB2006100199650A CN100398455C (en) | 2006-08-10 | 2006-08-10 | Technology of circulating purifying dyestuff waste water by reactivating inorganic composite catalytic material |
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| CN100398455C CN100398455C (en) | 2008-07-02 |
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| CN1139075A (en) * | 1995-06-29 | 1997-01-01 | 杭州争光化工集团公司 | Purifying process of waste water containing dye |
| CN1565982A (en) * | 2003-06-18 | 2005-01-19 | 中国科学院生态环境研究中心 | Light catalyzed oxidation method for dye wastewater treatment |
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