CN107935269A - A kind of water treatment technology of the muddy water zero-emission of energy reuse coagulant and catalysis material - Google Patents
A kind of water treatment technology of the muddy water zero-emission of energy reuse coagulant and catalysis material Download PDFInfo
- Publication number
- CN107935269A CN107935269A CN201711396044.0A CN201711396044A CN107935269A CN 107935269 A CN107935269 A CN 107935269A CN 201711396044 A CN201711396044 A CN 201711396044A CN 107935269 A CN107935269 A CN 107935269A
- Authority
- CN
- China
- Prior art keywords
- coagulant
- water treatment
- water
- bed mud
- treatment technology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Catalysts (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of water treatment technology of the muddy water zero-emission of energy reuse coagulant and catalysis material, method for treating water includes the following steps：1) nano-photocatalyst and coagulant are added into pending raw water, coagulation is completed in stirring, and the nano-photocatalyst fills titanium dioxide (N TiO for nitrogen2), coagulant is polyaluminum ferric chloride (PAFC)；2) after the coagulation system in step 1) is staticly settled, supernatant enters next step processing routine, and the bed mud after precipitation is placed and is irradiated under visible light, and irradiation while is stirred continuously；3) bed mud after irradiation in step 2) is added directly into pending raw water, and adds appropriate coagulant, complete the coagulation and photocatalytic degradation of a new round, the bed mud after photocatalytic degradation can be back to processing raw water again.
Description
Technical field
The present invention relates to water treatment field, the muddy water zero-emission of more particularly to a kind of energy reuse coagulant and catalysis material
Water treatment technology.
Background technology
In water purification plants water treatment technology, substantial amounts of bed mud results from coagulation-precipitate phase.These bed muds account for
5% of purified water produced by water factory.At present, major part water supply plant in China's is after the bed mud simple dehydration of these generations is handled
It is discharged into the rivers of lake, some water factories even directly discharge without processing, and only a small part bed mud is disposed by specification.This
Contained pollutant very likely results in secondary pollution after being thrown aside in a little bed muds, and then influences our production and living.In addition,
The present situation thrown aside the waste that can also cause water resource, aggravate China's shortage of water resources of water supply plant bed mud.
At present, being directed to the harmless treatment of water supply plant bed mud and the research of recycling has very much.But limitation mostly
In processing cost is high, effect is unstable and causes secondary pollution problems.For example, widely studied is recycled using acidic treatment
Using the coagulant in water supply plant bed mud, bed mud after processing is added to the pH value that may change raw water in raw water, influences
Water quality；And utilize bed mud to fire hollow brick, not only processing cost is higher, and the unstability of bed mud property can also influence the matter of calcining
Amount and success rate.Therefore, find and a kind of practicable innoxious and recycling treatment method is carried out to water supply plant bed mud be
The problem of urgent need to resolve.
The content of the invention
For above-mentioned technical problem existing in the prior art, the object of the present invention is to provide it is a kind of can reuse coagulant and
The water treatment technology of the muddy water zero-emission of catalysis material.The method for treating water can make bed mud innoxious, and reach reuse mark
Standard, reuse bed mud may not need can be achieved bed mud reuse to bottom-mud dewatering processing, reduce sludge handling cost, reuse bed mud
The recycling of photochemical catalyst and coagulant is realized at the same time, and the harmful substance avoided in bed mud damages environment.
In order to solve the above technical problems, the technical scheme is that：
A kind of water treatment technology of the muddy water zero-emission of energy reuse coagulant and catalysis material, includes the following steps：
1) nano-photocatalyst and coagulant are added into pending raw water, coagulation, the nano-photo catalytic are completed in stirring
Agent fills titanium dioxide (N-TiO for nitrogen2), coagulant is polyaluminum ferric chloride (PAFC)；
2) after the coagulation system in step 1) is staticly settled, supernatant enters next step processing routine, after precipitation
Bed mud is placed to be irradiated under visible light, and irradiation while is stirred continuously；
3) bed mud after irradiation in step 2) is added directly into pending raw water, and adds appropriate coagulant, completed
The coagulation and photocatalytic degradation of a new round, the bed mud after photocatalytic degradation can be back to processing raw water again.
Nitrogen-doped titanium dioxide photocatalyst is made by photocatalysis flco as coagulant using polyaluminum ferric chloride, the bottom of with
Mud settles together.Since nitrogen-doped titanium dioxide photocatalyst is evenly distributed in pending raw water, so, the photocatalysis of formation
Flco is distributed more uniform in the bed mud after precipitation.Under the irradiation of visible ray, humic acid in bed mud etc. can catalytic degradation
Pollutant can be realized under the catalytic action of photocatalysis flco more thoroughly degrades, and realizes the harmless treatment of bed mud.
Since nitrogen-doped titanium dioxide nano-photocatalyst and coagulant are present in bed mud in the form of flco, the bottom of by
During mud reuse, while the reuse of photochemical catalyst and coagulant is realized, on the one hand avoid containing substantial amounts of light in the water after processing
Catalyst and coagulant, increase follow-up processing routine, on the other hand, can save the usage amount of photochemical catalyst and coagulant,
Reduce the processing cost of raw water.
Furthermore, it is possible to the bed mud reuse after photocatalysis treatment without being carried out dehydrating to bed mud, is directly reduced into bottom
The processing cost of mud, and the direct discharge for avoiding bed mud pollutes environment.
Preferably, in step 1), nanometer nitrogen-doped titanium dioxide and polyaluminum ferric chloride mass ratio are 20-100:1-5, it is excellent
Elect 20-30 as:1.
Preferably, in step 2), the time of standing is 5-60min.Substantial amounts of thick alumen ustum in subsidence stage and deposit, on
Layer water be primary water, and remaining particle diameter is small, density is small alumen ustum slowly declines on one side, continues mutually collision on one side and ties greatly, to rear
Phase sodium humate flco settles completely.
Preferably, in step 2), into the volume 93%-96% of the total volume of the supernatant of next step processing routine.
Preferably, in step 2), it is seen that the intensity of illumination of light is 3000~15000Lux, mixing speed for 200~
1000rpm。
Preferably, in step 3), the coagulant and the mass ratio of initial incremental amount added are 1:1-5.
Preferably, in step 1), the preparation method of the nanometer nitrogen-doped titanium dioxide is：The metatitanic acid of 12-18 parts by weight
Butyl ester, the absolute ethyl alcohol of 18-22 parts by weight, the urea of 0.05-0.5 parts by weight are mixed with the dilute nitric acid solution of 28-35 parts by weight
Afterwards, when heating 3-5 is small at 80-100 DEG C, when then calcining 3-5 is small at 400 DEG C -500 DEG C, obtained white powder is
Nanometer nitrogen-doped titanium dioxide.
It is further preferred that the preparation method of the nanometer nitrogen-doped titanium dioxide is：
1) butyl titanate is mixed with absolute ethyl alcohol, obtains solution A, urea is dissolved in dilute nitric acid solution, obtain solution
B；
2) under agitation, solution A is slowly added into solution B, and the pH value for adjusting solution is anti-to neutrality, heating
Should, then calcine, obtain a nanometer nitrogen-doped titanium dioxide.
Still more preferably, the concentration of the dust technology is 1mol/L.
Still more preferably, the weight ratio of butyl titanate, absolute ethyl alcohol, urea and dust technology is 15:20:0.05-
0.5:30。
Still more preferably, in step 2), the temperature for heating reaction is 75-85 DEG C, and the time of reaction is small for 2.5-3.5
When.
Still more preferably, in step 2), the temperature of calcining is 400 DEG C -500 DEG C, when the time of calcining is 2-4 small.
Application of the above-mentioned water treatment technology in preparing pure water and handling industrial wastewater.
The present invention has the advantages that：
In the present invention, in the coagulation stage, the formation of flco is with N-TiO2Powder is wadding core, using coagulating carrier technology, is carried
The ability of flco, the coagulant usage amount reduced are formed in high system.In the photocatalytic degradation stage, the pollutant in bed mud
(sodium humate) is completely degraded under visible ray photograph.Interior, the bed mud TCOD when 40 is smallMnIt is degraded within 20mg/L, reaches III
Class water quality standard so that bed mud is innoxious and reaches reuse standard.Bed mud after processing can be added directly into raw water, it is only necessary to added
A small amount of coagulant can carry out the sludge handling technique of a new round, and the photocatalyst for degrading performance after reuse connects with first use
Closely.During this, the catalysis material in bed mud, water resource and part coagulant are able to reuse, and technique is simple, without
Bed mud is carried out dehydrating, thus greatly reduces sludge handling cost, adds the feasibility of technique.
Brief description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are used to explain the application, do not form the improper restriction to the application.
Fig. 1 is to add N-TiO2Humidification of the powder to sodium humate solution coagulation effect；
Fig. 2 is containing N-TiO2Sodium humate bed mud can be by the photocatalytic Degradation under light；
Fig. 3 is containing N-TiO2Sodium humate bed mud recycling evaluation.
Embodiment
It is noted that described further below is all illustrative, it is intended to provides further instruction to the application.It is unless another
Indicate, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation and/or combinations thereof.
Material used, reagent etc., are commercially available unless otherwise specified in the present invention.
In the present invention, coagulation efficiency, the calculation formula of photocatalytic degradation efficiency are as follows：
Coagulation efficiency (%)=(supernatant fluid turbidity after raw water turbidity-coagulation) × 100%/raw water turbidity；
Photocatalytic degradation efficiency (%)=(raw water CODMn- survey the COD of time point solutionMn) × 100%/raw water CODMn；
As background technology is introduced, there are certain deficiency in terms of bed mud harmless treatment in drinking water technology, together
When bed mud in moisture and coagulant can not reuse cause the waste of resource, in order to solve as above technical problem, the present invention provides
A kind of while harmless treatment and the method for recycling water supply plant bed mud, comprise the following steps：
Step (1)：Photocatalyst powder is added into raw water and coagulation is completed in coagulant stirring.
Wherein, raw water is the aqueous solution being configured to by sodium humate, and photochemical catalyst is nanometer nitrogen-doped titanium dioxide (N-
TiO2) powder, coagulant is polyaluminum ferric chloride (PAFC).
Step (2)：After staticly settling, settling of floccus containing sodium humate to bottom, sodium humate is removed in supernatant；
Step (3)：Supernatant is discarded, retains the bed mud that sodium humate is contained in bottom, placement is irradiated and stirred under visible light
Mix, after a certain period of time, the sodium humate in bed mud is degraded.
Step (4)：Bed mud after degraded is added directly into the raw water containing sodium humate, and is added a small amount of
PAFC, carries out the coagulation and photocatalytic degradation of a new round, so that water, catalysis material and part in the bed mud after processing
Coagulant is able to reuse.
In the step (1), in the preferable technical solution of the present invention, nanometer N-TiO2Powder is 100 to 500 weight
Part, polyaluminum ferric chloride are 5 to 20 parts by weight.
In the most preferred technical solution of the present invention, nanometer N-TiO2Powder is 200 parts by weight, polyaluminum ferric chloride is
10 parts by weight.
Wherein, the N-TiO2Powder is prepared by the following method to obtain：The butyl titanate of 12~18 parts by weight, 18
The dilute nitric acid solution of the absolute ethyl alcohol of~22 parts by weight, the urea of 0.05~0.5 parts by weight and 28~35 parts by weight is 80~100
When heating 3~5 is small at DEG C, when calcining 3~5 is small at 400 DEG C~500 DEG C afterwards, obtained white powder is N-TiO2。
For the effect for improving photocatalytic degradation, in currently preferred technical solution, the N-TiO2Powder is
It is prepared by the following method：
The butyl titanate of 15 parts by weight is added in the absolute ethyl alcohol of 20 parts by weight, and solution A is obtained after stirring；
The urea of 0.05~0.5 parts by weight is added in the dilute nitric acid solution of 30 parts by weight, is mixed to form solution B；
Under agitation, solution A is slowly added into solution B, pH to 7 is adjusted with sodium hydroxide solution, at 80 DEG C
Heat 3 it is small when；
Supernatant is abandoned into system centrifugation afterwards, precipitation washing 3 times, calcined at 400 DEG C~500 DEG C 3 it is small when, obtained white
Powder is N-TiO2。
Wherein, in the step (1), the condition of stirring stirs 1~2min, 30~60rpm stirrings 10 for 150~250rpm
~20min.
By PAFC and N-TiO2Quick stirring makes it disperse to form fine alumen ustum rapidly in input water, and water body becomes more at this time
Add muddiness, current is produced the turbulent flow of fierceness, be the thicker process of alumen ustum growth in flocculated stage, it is desirable to appropriate turbulent flow journey
Degree and enough residence times (10~20min), can be observed a large amount of alumen ustum aggregations to the later stage and slowly sink by gravity.
In the step (2), time of repose is 5~60min.Substantial amounts of thick alumen ustum in subsidence stage and deposit, upper strata
Water is primary water, and the alumen ustum that remaining particle diameter is small, density is small slowly declines on one side, while continuation mutually collision knot is big, to the later stage
Sodium humate flco settles completely.
In the step (3), the volume about of the total volume 93%~96% of the supernatant discarded.
In the step (3), intensity of illumination is 3000~15000Lux, and mixing speed is 200~1000rpm.
TiO2Semiconductor is due to having the advantages that nontoxic, inexpensive, performance is stable and corrosion resistance becomes most widely used
Photochemical catalyst.However, from titanium dioxide optical catalysts also having some limitations property from the point of view of its photocatalysis efficiency：Due to its forbidden band
Width is 3.2eV, and light absorption wave band is narrow (mainly in ultra-violet (UV) band), and sun light utilization ratio is low；The recombination rate of semiconductor carriers
Height, quantum efficiency are low etc..And the introducing of nonmetalloid N can expand TiO2Photoresponse scope, so as to improve it in visible ray
The photocatalytic activity in area.Therefore, N-TiO2Water pollutant can efficiently drop under visible light.
In the step (4), in the preferable technical solution of the present invention, the polyaluminum ferric chloride added is 3~6 weight
Part.
In the most preferred technical solution of the present invention, the polyaluminum ferric chloride added is 5 parts by weight.
In the step (4), the N-TiO in the bed mud of recycling2, to the photocatalytic degradation effect of sodium humate with just
Secondary use approaches.
In order to enable those skilled in the art can clearly understand technical scheme, below with reference to tool
The embodiment of body and the comparative example technical solution that the present invention will be described in detail.
Embodiment 1
By the nanometer N-TiO of 200mg2Powder is added to 1L, in the sodium humate aqueous solution of 10mg/L, is not added with PAFC,
250rpm quickly stirs 1min, and 40rpm mixes slowly 20min.20min is stood after the completion of coagulation, detection supernatant is (under liquid level
At 2cm) turbidity change, calculate sodium humate coagulation efficiency be 0, see Fig. 1
Embodiment 2
By the nanometer N-TiO of 200mg2Powder is added to 1L, and in the sodium humate aqueous solution of 10mg/L, the PAFC of addition is dense
Spend and quickly stir 1min for 5mg/L, 250rpm, 40rpm mixes slowly 20min.20min is stood after the completion of coagulation, detects supernatant
The turbidity change of liquid (under liquid level at 2cm), the coagulation efficiency for calculating sodium humate is 69%, sees Fig. 1
Embodiment 3
By the nanometer N-TiO of 200mg2Powder is added to 1L, and in the sodium humate aqueous solution of 10mg/L, the PAFC of addition is dense
Spend and quickly stir 1min for 10mg/L, 250rpm, 40rpm mixes slowly 20min.20min is stood after the completion of coagulation, detects supernatant
The turbidity change of liquid (under liquid level at 2cm), the coagulation efficiency for calculating sodium humate is 96.5%, sees Fig. 1
Embodiment 4
By the nanometer N-TiO of 200mg2Powder is added to 1L, and in the sodium humate aqueous solution of 10mg/L, the PAFC of addition is dense
Spend and quickly stir 1min for 15mg/L, 250rpm, 40rpm mixes slowly 20min.20min is stood after the completion of coagulation, detects supernatant
The turbidity change of liquid (under liquid level at 2cm), the coagulation efficiency for calculating sodium humate is 97.5%, sees Fig. 1
Embodiment 5
By the nanometer N-TiO of 200mg2Powder is added to 1L, and in the sodium humate aqueous solution of 10mg/L, the PAFC of addition is dense
Spend and quickly stir 1min for 20mg/L, 250rpm, 40rpm mixes slowly 20min.20min is stood after the completion of coagulation, detects supernatant
The turbidity change of liquid (under liquid level at 2cm), the coagulation efficiency for calculating sodium humate is 97.5%, sees Fig. 1
In conclusion in line with the optimal principle for taking into account saving coagulant of coagulation effect, choose and add 10mg/L PAFC conducts
Optimal coagulation agent dose.
Embodiment 6
By the N-TiO of 200mg/L2, the PAFC of 10mg/L is added to coagulation in sodium humate solution, will after the completion of coagulation
Supernatant discards, the supernatant discarded about of the total volume 95%, and remaining part is to contain N-TiO2Sodium humate bed mud
Solution.Bed mud solution is placed under the visible ray of 10000Lux intensity, photocatalytic degradation is carried out under 500rpm rotating speeds.When different
Between point detection solution CODMnValue, calculates its photocatalytic activity, the results showed that after when degraded 40 is small, the COD of solutionMnValue
Reach 18mg/L, reach III class water quality standard (<20mg/L) so that bed mud is innoxious and reaches reuse standard, sees Fig. 2.
Embodiment 7
Bed mud after harmless treatment is added directly into 1L, in the sodium humate aqueous solution of 10mg/L, and adds 5mg/L
PAFC, repeat above-mentioned coagulation and photocatalysis step, reuse is twice (altogether using three times), the results showed that, the light of reuse twice is urged
Change when degradation efficiency is used with first time and approach, can be interior when 48 is small, by CODMnValue is degraded to 20mg/L or so, reaches nothing
Evilization and reuse standard, are shown in Fig. 3.
When studying sodium humate coagulation and photocatalytic degradation technique, it turns out that, different PAFC and N-TiO2Dosage
It can cause the difference of coagulation and photocatalysis effect, only by taking comparative example 1~6 as an example, but make a search and be not limited only to following contrast
Example.
Comparative example 1
By 1L, the sodium humate aqueous solution of 10mg/L, 250rpm quickly stirs 1min, and 40rpm mixes slowly 20min.It is mixed
20min is stood after the completion of solidifying, the turbidity of detection supernatant (under liquid level at 2cm) changes, and calculates the coagulation efficiency of sodium humate
For 0, Fig. 1 are seen
Comparative example 2
In 1L, the sodium humate aqueous solution of 10mg/L, the PAFC that concentration is 5mg/L is added, 250rpm is quickly stirred
1min, 40rpm mix slowly 20min.20min is stood after the completion of coagulation, the turbidity of detection supernatant (under liquid level at 2cm) becomes
Change, the coagulation efficiency for calculating sodium humate is 22.5%, sees Fig. 1
Comparative example 3
In 1L, the sodium humate aqueous solution of 10mg/L, the PAFC that concentration is 10mg/L is added, 250rpm is quickly stirred
1min, 40rpm mix slowly 20min.20min is stood after the completion of coagulation, the turbidity of detection supernatant (under liquid level at 2cm) becomes
Change, the coagulation efficiency for calculating sodium humate is 82%, sees Fig. 1
Comparative example 4
In 1L, the sodium humate aqueous solution of 10mg/L, the PAFC that concentration is 15mg/L is added, 250rpm is quickly stirred
1min, 40rpm mix slowly 20min.20min is stood after the completion of coagulation, the turbidity of detection supernatant (under liquid level at 2cm) becomes
Change, the coagulation efficiency for calculating sodium humate is 98%, sees Fig. 1
Comparative example 5
In 1L, the sodium humate aqueous solution of 10mg/L, the PAFC that concentration is 20mg/L is added, 250rpm is quickly stirred
1min, 40rpm mix slowly 20min.20min is stood after the completion of coagulation, the turbidity of detection supernatant (under liquid level at 2cm) becomes
Change, the coagulation efficiency for calculating sodium humate is 98%, sees Fig. 1
Comparative example 6
The PAFC of 15mg/L is added to coagulation in sodium humate solution, after the completion of coagulation, supernatant is discarded, is discarded
Supernatant about of the total volume 95%, remaining part are to be free of N-TiO2Sodium humate bed mud solution.Bed mud solution is put
Under the visible ray of 10000Lux intensity, the stirring of 500rpm rotating speeds.In the COD of different time points detection solutionMnValue, the results showed that
During CODMnValue is held essentially constant, and sees Fig. 2.
In conclusion use PAFC and N-TiO2The bed mud solution formed after coagulation, light can occur under visible light and urge
Change degraded, make its innoxious and reach the water standard of reuse.The reuse of bed mud can recycle whole moisture, N-TiO in bed mud2
And part coagulant, and photocatalytic degradation efficiency does not significantly reduce after reuse twice.Therefore, which can not only avoid
Harm of the bed mud to environment can also be in reuse bed mud resource, reduce cost, add the feasibility of technique.
The foregoing is merely the preferred embodiment of the application, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
- A kind of 1. water treatment technology of the muddy water zero-emission of energy reuse coagulant and catalysis material, it is characterised in that：Including such as Lower step：1) nano-photocatalyst and coagulant are added into pending raw water, coagulation is completed in stirring, and the nano-photocatalyst is Nitrogen admixture titanium dioxide (N-TiO2), coagulant is polyaluminum ferric chloride (PAFC)；2) after the coagulation system in step 1) is staticly settled, supernatant enters next step processing routine, by the bed mud after precipitation Placement is irradiated under visible light, and irradiation while is stirred continuously；3) bed mud after irradiation in step 2) is added directly into pending raw water, and adds appropriate coagulant, complete new one The coagulation and photocatalytic degradation of wheel, the bed mud after photocatalytic degradation can be back to processing raw water again.
- 2. water treatment technology according to claim 1, it is characterised in that：In step 1), nanometer nitrogen-doped titanium dioxide with Polyaluminum ferric chloride mass ratio is 20-100:1-5, is preferably 20-30:1.
- 3. water treatment technology according to claim 1, it is characterised in that：In step 2), into next step processing routine The volume 93%-96% of the total volume of supernatant.
- 4. water treatment technology according to claim 1, it is characterised in that：In step 2), it is seen that the intensity of illumination of light is 3000~15000Lux, mixing speed are 200~1000rpm.
- 5. water treatment technology according to claim 1, it is characterised in that：In step 3), the coagulant added adds with initial The mass ratio for entering amount is 1:1-5.
- 6. water treatment technology according to claim 1, it is characterised in that：In step 1), the nanometer N doping titanium dioxide The preparation method of titanium is：The butyl titanate of 12-18 parts by weight, the absolute ethyl alcohol of 18-22 parts by weight, the urine of 0.05-0.5 parts by weight After element is mixed with the dilute nitric acid solution of 28-35 parts by weight, when heating 3-5 is small at 80-100 DEG C, then at 400 DEG C -500 DEG C When calcining 3-5 is small, obtained white powder is nanometer nitrogen-doped titanium dioxide.
- 7. water treatment technology according to claim 1, it is characterised in that：The preparation side of the nanometer nitrogen-doped titanium dioxide Method is：1) butyl titanate is mixed with absolute ethyl alcohol, obtains solution A, urea is dissolved in dilute nitric acid solution, obtain solution B；2) under agitation, solution A is slowly added into solution B, and pH value to neutrality, the heating for adjusting solution is reacted, Then calcine, obtain a nanometer nitrogen-doped titanium dioxide.
- 8. water treatment technology according to claim 1, it is characterised in that：Butyl titanate, absolute ethyl alcohol, urea and dust technology Weight ratio be 15:20:0.05-0.5:30.
- 9. water treatment technology according to claim 1, it is characterised in that：In step 2), the temperature for heating reaction is 75-85 DEG C, when the time of reaction is 2.5-3.5 small；The temperature of calcining is 400 DEG C -500 DEG C, when the time of calcining is 2-4 small.
- 10. application of any water treatment technologies of claim 1-9 in preparing pure water and handling industrial wastewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396044.0A CN107935269B (en) | 2017-12-21 | 2017-12-21 | Water treatment process capable of recycling coagulant and photocatalytic material and realizing zero discharge of muddy water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396044.0A CN107935269B (en) | 2017-12-21 | 2017-12-21 | Water treatment process capable of recycling coagulant and photocatalytic material and realizing zero discharge of muddy water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107935269A true CN107935269A (en) | 2018-04-20 |
| CN107935269B CN107935269B (en) | 2020-05-12 |
Family
ID=61942531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711396044.0A Active CN107935269B (en) | 2017-12-21 | 2017-12-21 | Water treatment process capable of recycling coagulant and photocatalytic material and realizing zero discharge of muddy water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107935269B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611357A (en) * | 2022-10-27 | 2023-01-17 | 华东交通大学 | Photocatalysis/coagulation integrated water treatment process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107706A (en) * | 2014-07-15 | 2014-10-22 | 西安交通大学 | Preparation method of nitrogen-iron codoped nanometer titania photocatalyst |
| US20160039698A1 (en) * | 2014-08-08 | 2016-02-11 | Wisconsin Alumni Research Foundation | Method to remediate effluents containing metals complexed with organic and/or inorganic species |
| CN106007080A (en) * | 2016-07-01 | 2016-10-12 | 南京大学 | Method for gradient oxidation deep purification of biochemical tail water |
| CN107098453A (en) * | 2017-05-18 | 2017-08-29 | 山东大学 | It is a kind of strengthen algae coagulation degrade under visible light simultaneously the bed mud containing algae except algae coagulant and its preparation method and application |
| CN107140719A (en) * | 2017-05-18 | 2017-09-08 | 山东大学 | Strengthen algae coagulation using nitrogen-doped titanium dioxide while the method for the bed mud containing algae of degrading under visible light |
-
2017
- 2017-12-21 CN CN201711396044.0A patent/CN107935269B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107706A (en) * | 2014-07-15 | 2014-10-22 | 西安交通大学 | Preparation method of nitrogen-iron codoped nanometer titania photocatalyst |
| US20160039698A1 (en) * | 2014-08-08 | 2016-02-11 | Wisconsin Alumni Research Foundation | Method to remediate effluents containing metals complexed with organic and/or inorganic species |
| CN106007080A (en) * | 2016-07-01 | 2016-10-12 | 南京大学 | Method for gradient oxidation deep purification of biochemical tail water |
| CN107098453A (en) * | 2017-05-18 | 2017-08-29 | 山东大学 | It is a kind of strengthen algae coagulation degrade under visible light simultaneously the bed mud containing algae except algae coagulant and its preparation method and application |
| CN107140719A (en) * | 2017-05-18 | 2017-09-08 | 山东大学 | Strengthen algae coagulation using nitrogen-doped titanium dioxide while the method for the bed mud containing algae of degrading under visible light |
Non-Patent Citations (3)
| Title |
|---|
| 刘欣伟等: ""TiO2光催化材料在饮用水深度处理中的应用研究进展"", 《材料开发与应用》 * |
| 胡蕾等: ""氮掺杂TiO2 介孔光催化剂降解腐殖酸的研究"", 《中国环境科学》 * |
| 谢昆等著: "《纳米技术在水污染控制中的应用》", 30 June 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611357A (en) * | 2022-10-27 | 2023-01-17 | 华东交通大学 | Photocatalysis/coagulation integrated water treatment process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107935269B (en) | 2020-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105621809B (en) | A kind of processing method of shale gas fracturing outlet liquid | |
| CN105753133B (en) | A kind of catalytic ozonation tower and the method using its gas treatment waste water | |
| CN110040878A (en) | A kind of fluoride waste deep treatment method | |
| CN107140719A (en) | Strengthen algae coagulation using nitrogen-doped titanium dioxide while the method for the bed mud containing algae of degrading under visible light | |
| CN103864245A (en) | Technology for treating inorganic fluorine-organic fluorine industrial waste water | |
| CN110550722A (en) | method for treating organic wastewater by preparing hydrolysis type ferromanganese reagent from ferromanganese-containing sludge and efficiently catalyzing persulfate | |
| CN107098453A (en) | It is a kind of strengthen algae coagulation degrade under visible light simultaneously the bed mud containing algae except algae coagulant and its preparation method and application | |
| RU2480423C1 (en) | Combined method of treating waste water containing organic contaminants | |
| CN104478029B (en) | A kind of water treatment agent and preparation method thereof | |
| CN1275881C (en) | Method for photo-oxidative flocculating treatment of organic pollutant waster water | |
| CN107935269A (en) | A kind of water treatment technology of the muddy water zero-emission of energy reuse coagulant and catalysis material | |
| CN105032463B (en) | CsPMo/g-C3N4-Bi2O3 photocatalyst and preparation method therefor and application thereof in phenolic wastewater treatment | |
| XIAO et al. | Degradation of organic pollutants in flocculated liquid digestate using photocatalytic titanate nanofibers: Mechanism and response surface optimization | |
| KR101445748B1 (en) | a wastewater treatment system using ozone | |
| CN114368817A (en) | Coal gasification coarse slag-based composite flocculant and preparation method and application thereof | |
| KR101156737B1 (en) | Additive for sludge solidifying agent, method of preparing the same, and solidification treatment method of sludge using the same | |
| CN106044999A (en) | Method for treating wastewater through Fenton combined technology | |
| CN105800728B (en) | It is a kind of for the suspension diaphragm plate of sewage treatment, preparation method and applications | |
| CN108147496B (en) | Method for degrading water pollutants by using nano photocatalyst flocs | |
| CN104276721A (en) | Method for treating pure terephthalic acid production wastewater | |
| CN105692831A (en) | Efficient slag-based inorganic phosphorous removal flocculating agent and preparation method thereof | |
| CN104128204A (en) | Preparation method of silver phosphate/resin compound | |
| CN102531249A (en) | Method for removing As(III) by photocatalytic oxidation and coagulation | |
| CN107537466A (en) | A kind of preparation method of photochemical catalyst | |
| CN105936560A (en) | Method for degrading sewage based on dye photooxidation and visible light catalytic oxidation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |