CN102513108A - TiO2-carrying photoelectric catalyst for photoelectrocatalytic advanced treatment on sludge and method and device for TiO2-carrying photoelectric catalyst-based photoelectrocatalytic advanced treatment on sludge - Google Patents
TiO2-carrying photoelectric catalyst for photoelectrocatalytic advanced treatment on sludge and method and device for TiO2-carrying photoelectric catalyst-based photoelectrocatalytic advanced treatment on sludge Download PDFInfo
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Abstract
The invention discloses a TiO2-carrying photoelectric catalyst for photoelectrocatalytic advanced treatment on sludge, and a method and a device for TiO2-carrying photoelectric catalyst-based photoelectrocatalytic advanced treatment on sludge. The method provided by the invention comprises the following steps of 1, adding the TiO2-carrying photoelectric catalyst for photoelectrocatalytic advanced treatment on sludge into sludge, 2, carrying out irradiation by an ultraviolet ray generator located at an upper part of a reactor, and feeding high-energy electrons produced by an air-carried high-energy electron generator into the sludge by an aeration pipe located a lower part of the reactor, 3, adding a composite coagulation agent into the sludge obtained by the step 2 and carrying out flocculation, and 4, carrying out press filtration of the sludge by a pressure filter. The TiO2-carrying photoelectric catalyst, the device and the method provided by the invention solve the technical problem that the sludge normal-temperature treatment technology cannot remove water absorbed by organic matter-containing sludge, realize that the content of water in residual sludge is reduced to the content below 50% by a single step under the conditions of a normal temperature and normal pressure, realize sterilization, deodorization and solidification of toxic heavy metal ions simultaneously, and realize a large sludge decrement, a low treatment cost and good treatment effects. Sludge treated by the TiO2-carrying photoelectric catalyst, the method and the device reaches the latest standard published by the state environmental protection department and is convenient for follow-up recycling application.
Description
Technical field
The present invention relates to the field of sludge treatment of green technology, especially a kind of load TiO
2Catalyst, the apparatus and method of photoelectrocatalysis advanced treating mud.
Background technology
Municipal sludge is the residues such as floating foam of deposits such as the organic matter that produces in the sewage disposal process, microbial bacteria micelle and sewage surface flotation, wherein contains toxic heavy metals such as a large amount of pathogens, parasite, pathogenic microorganisms 、 bioxin and arsenic, copper, mercury, chromium.Mud granule mainly exists with the form of the outer polymer (EPS) of born of the same parents; Complicated component contains protein (protein), polysaccharide (polysaccarides), humus (humic-like substances), uronic acid (uronic acid), lipid (1ipid) and DNA etc. usually.Because the Water-In-Oil architectural characteristic of the outer polymer of mud granule born of the same parents causes the sewage plant sludge moisture content high, volume is big, brings difficulty for stacking and transportation etc.Municipal sludge as arbitrarily throwing aside hill farmland or landfill lack of standardization, will cause new potential threat as dealing with improperly or processing lack of standardization to ecological environment.Therefore, the mud that factory produced of further disposing of sewage is the great difficult problem in environmental protection field, the world today.
China is because the Treatment of Sludge dynamics of investment is little for a long time; Cause present domestic Treatment of Sludge to be in serious hysteretic state, pursue wastewater treatment rate that have even unilaterally, simplify as much as possible even ignored the Treatment of Sludge disposal unit; With untreated wet mud arbitrarily transport outward, simple landfill or stacking; Cause many big cities the phenomenon in mud besieged city to occur, and begun to spread, brought totally unfavorable influence to ecological environment to small and medium-sized cities.
Along with the acceleration of Urbanization in China, treatment rate of domestic sewage improves year by year, and sludge from wastewater treatment plant output sharply increases greater than 10% speed with annual growth.2010, national town sewage handling rate surpassed 50%, and treatment rate of domestic sewage surpasses 70%, and a year sewage load reaches 36,500,000,000 tons, and a year sludge yield reaches 2,740 ten thousand tons; By 2015, a year sewage treatment capacity reached 47,500,000,000 tons, and a year sludge yield reaches 3,560 ten thousand tons.Treatment of Sludge has become the major issue of puzzlement China's water treatment field and even environmental area.
China begins to pay close attention to the municipal sludge problem in recent years, and advanced foreign technology was also once attempted to imitate by departments at different levels, as: burning and heat energy utilization, aerobic-anaerobic digestion etc.Yet; Though burn and the heat energy utilization technology energy capable of using; But the mud content of organic matter of the relative developed countries of domestic mud is low; Therefore the energy self utilization rate is not as good as external, and equipment is expensive with operating cost, still causes like the inorganic matter (genus dangerous material) of organic atmosphere pollution such as bioxin and residual about 1/3 left and right sides amount of solid and needs further disposal.Though aerobic-anaerobic digestion is comparatively extensive abroad.But domestic because: 1. the investment of anaerobic sludge digestion technical finesse mud is big, and the correlation engineering experience of China's Sludge Digestion is also few, and large-scale sludge digestion equipment is mostly from external import, infrastructure investment and operating cost height; 2. anaerobic sludge digestion is handled except that needs investment substantial contribution and is built the slaking apparatus, also need drop into substantial contribution and build supporting treatment facility, and mud can only be to the quality of organic decrement about 1/3 to 1/2 in the mud after anaerobic digestion.From the whole industry chain angle of sludge treatment, anaerobic digestion does not also reach the purpose of final disposal, also can stay a large amount of excess sludges (residue) and also need handle through other technologies.The digestive juice COD concentration that produces is quite high, also need set up supporting sewage treatment facility or turn back to sewage treatment plant and handle.This all needs a large amount of additional investments and operating cost; 3. the sand content of China's mud is higher, and the content of organic matter is lower than American-European countries, and the biodegradability of mud is poor, and indexs such as the stability of digestion facility operation, biogas yield generally all do not reach external standard.So the digestion techniques of generally using abroad, operational effect is unsatisfactory in China; 4. anaerobic sludge digestion can produce a large amount of inflammable gases such as methane, and the fire-fighting safe class is required and the management expectancy height, and anaerobic sludge digestion facility periphery also need be provided with the protection distance of hundreds of rice, and floor space is big.Therefore the sludge digestion technology still is difficult to promote at home.
The main method of China's municipal sludge processing at present has concentrated landfill, macerates system compost, a small amount of anhydration and incineration etc., and wherein in the zone of land resource rich, concentrated landfill is the main method that Treatment of Sludge is disposed.Yet; Sewage plant sludge handles traditional handicraft because the outer polymer of the bag of breaking sludge effectively makes mud micelle structure inhale Bao Shui and is difficult to remove with the cenobium cellular water, cause Sewage Plant to be handled after moisture percentage in sewage sludge still up to 78～83%; Cost of transportation is high when causing the mud landfill; Landfill land seizure rate is huge, and very easily because of mud return molten, the secondary pollution that causes landfill such as ooze out, influence peripheral ecological environment.The moisture content of mud can't drop to below 60%, has limited the direct landfill and the comprehensive utilization of resources of mud, and this is a technical bottleneck during current Treatment of Sludge is disposed.
Semiconductor ultra micro meter level TiO
2Be a kind of efficiency light eelctro-catalyst, ultraviolet light induce with air source current-carrying upper state electronic action under, TiO
2Electronics gets into conduction band in the particulate, forms upper state excitation state e
*Make solid-liquid interface form the OH free radical, the symmetry that combines with organic micella mud to accomplish the steric hindrance structure adds the OH process, cracks the structure cell film of organic micella network structure film and mushroom; Make constitution water, the suction Bao Shui of organic mud, the crystallization water becomes flowable interstitial water; Ultra micro meter level TiO
2Behind the absorbing light electronics, to organic mud-SH ,-NH
2Etc. structure generation oxidation-reduction process, form stench in the anti-effectively locking system; Heavy metal ion changes avtive spot organic chelated in the nuclear into by the mud granule surface adsorption, makes that the toxic heavy metal ion is effectively solidified in the mud; Semiconductor ultra micro meter level TiO
2Under the photoelectric-synergetic effect, have very strong oxidability, have that energy consumption is low, simple to operate, reaction condition is gentle and advantage such as non-secondary pollution, become valued day by day in recent years environmental pollution improvement new technology.
Summary of the invention
During the applicant disposed to above-mentioned existing Treatment of Sludge, moisture content can't drop to the technical bottleneck below 60%, and a kind of load TiO is provided
2Catalyst, the apparatus and method of photoelectrocatalysis advanced treating mud; Thereby under the condition of normal temperature, usual pressure; Can one step of the moisture in the excess sludge (excess activated sludge) be reduced to below 50%, accomplish sterilization, deodorizing, the curing of toxic heavy metal ion simultaneously.Excess sludge is meant the activated sludge outside secondary sedimentation tank (or settling zone) discharge system in the Sludge System.
The technical scheme that the present invention adopted is following:
A kind of load TiO
2The photoelectrocatalysis agent prepares according to following steps:
(1) be that 1:0.5～1.4 adding semiconductor ultra micro meter level titanium white powders also mix with the oxide of micron order transition metal by weight percentage;
(2) above-mentioned mixed-powder is carried out sintering under 600 ℃～1260 ℃, carry out ball milling, washing, drying, dusting cover prepared acquisition core catalyst then;
(3) according to percentage by weight the core catalyst of 0.5%～2 % and 98%～99.5% the dispersion stabilizer as carrier are mixed.
It is further characterized in that: said transition metal comprises Fe, Mn, Al, V.
The multicomponent that consists of in active carbon, diatomite, bentonite, perlite and the salt of dispersion stabilizer is formed.
A kind ofly utilize above-mentioned catalyst to carry out load TiO
2The device of photoelectrocatalysis advanced treating mud, photoelectrocatalysis agitated reactor center of top is provided with stirring motor, and the output shaft of motor is provided with stirring vane; Aerated conduit is arranged on agitated reactor inside, on aerated conduit, is placed with aeration head; Aerated conduit is connected with the outer carrier pipe road, and conveyance conduit is connected in series with air source current-carrying high energy electron generator, compressed air reservoir and air compressor in proper order; Be furnished with many group ultraviolet generaters on the inner chamber top of agitated reactor, the pond of making up a prescription is communicated with agitated reactor with delivery pump through pipeline.
It is further characterized in that: said agitated reactor top is provided with the electric charging mouth, and the solids raised machine feeds in raw material in agitated reactor with the catalyst lifting and through charge door through the elevator track of agitated reactor side.
The power of said ultraviolet generater is 3～6KW, and the power of said air source current-carrying upper state electronics generator is 25KW～50KW, and the conveying bleed pressure is 2.2 * 105～4.8 * 105Pa, current-carrying upper state electrical air source amount 1200～5200L.
A kind of above-mentioned catalyst and device of utilizing carries out load TiO
2The method of photoelectrocatalysis advanced treating mud comprises following steps:
The first step: in mud, add load TiO
2The photoelectrocatalysis agent is fully stirred;
Second step: based on stirring mud 30～90 minutes in the agitated reactor that do not coexist of the content of organic matter; Adopt the ultraviolet generater on agitated reactor top to shine simultaneously, adopt air source current-carrying upper state electronics generator in mud, to import high energy electron through the aerating pipelines of agitated reactor bottom;
The 3rd step: add compound coagulation agent and carried out flocculation reaction 5～10 minutes;
The 4th step: export the mud in the agitated reactor to middle pond, and utilize filter press to carry out press filtration.
It is further characterized in that: said load TiO
2The interpolation percentage by weight of photoelectrocatalysis agent is over dry mud: supported catalyst=100:3.2 ~ 11.
According to the described load TiO of claim 7
2The method of photoelectrocatalysis advanced treating mud is characterized in that: said compound coagulation agent is that 85～95% PAC and 5～15% CPAM form by percentage by weight, and adding percentage by weight is over dry mud: compound coagulation agent=100:0.8 ~ 1.5.
Beneficial effect of the present invention is following:
The present invention selects supported catalyst for use, can effectively reduce the resistance to mass tranfer of exist in the mud photoelectricity oxidizing process gas-solid, solid-liquid, improves oxidation effectiveness; Carrier has good adsorption property, neutralization precipitation and filtration crown_interception, and wide material sources, and is cheap, can save processing cost.
The present invention only need carry out common press filtration behind the catalytic reaction coagulation; Do not need the pressurization press filtration that energy consumption is very high, wearing and tearing are very big; Handle the back moisture percentage in sewage sludge and can reduce to below 50%, it is low to contain the bacterium index, Stability Analysis of Structures; Each item index all satisfies the GB/T23485-2009 requirement, can be used as refuse landfill overburden soil shale.Organic matter is all 35%～65% in the domestic mud butt, and corresponding fuel value is at 1800～3600 kilocalories, so the dewatered sludge of the present invention after handling also can be used as thermal power plant or cement plant, brick field fuel substitute, is with a wide range of applications.
The present invention has broken through normal temperature and has handled can't remove in the mud technology and contain the technical bottleneck that organic matter sludge is inhaled Bao Shui, reached that mud decrement is big, processing cost is low, effective, handle mud and reach national environmental protection portion newest standards, be convenient to follow-up resource and use.
Generally use CaO in the existing sludge drying processing procedure, because CaO is converted into Ca (OH) in sludge handling process
2, the mud alkalize after the processing; If with mud as in the low calorie fuels recycling, Ca (OH)
2Decomposable process is an endothermic process, makes the calorific value of mud receive loss to a certain degree, is unfavorable for the utilization of resources.The present invention does not use CaO in processing procedure, not only saved operating cost, the more important thing is the calorific value that has kept mud.And the moisture percentage in sewage sludge after the present invention handles is below 50%; Compare with respect to moisture content about 80% of the prior art; Calorific value is improved significantly, and the mud after the processing can directly be used for can be used for the low calorie fuels substitute of brick field, cement plant, firepower electrical plant.Mud conforms with in [2010] No. 157 files of Chinese Ministry of Environmental Protection the requirement of " sewage treatment plant is that purpose transports factory circle with mud to store (promptly not treatment and disposal); must be with sludge dewatering to moisture content below 50% " after the processing of moisture content below 50%, makes things convenient for the utilization of resources better.
Photoelectrocatalysis reaction of the present invention is zero-order reaction, and not temperature influence, thereby applicability is very wide, not only can be applied in the torrid areas, temperate zone, and refrigerant latitudes also can widespread usage.This is because photoelectricity causes TiO
2The catalytic active center interface constitutes the influence that the netted rupture of membranes reaction of the organic mud micella of OH radical pair does not receive environment temperature: this reaction energy from ultraviolet light to micron order TiO
2Activated centre valence electron transition forms the OH free radical at solid-liquid interface; Air source current-carrying upper state electron stream constantly excites catalytic active center micron order TiO simultaneously
2The interface forms the cyclic process of OH free radical.The activation energy of the rupture of membranes reaction that OH free radical and organic mud micella are netted is zero; Its energy stems from photoelectricity and causes catalytic process, and the reaction time does not receive the influence of environment temperature.
Description of drawings
Fig. 1 is a treating apparatus sketch map of the present invention.
Fig. 2 is the process chart of processing method of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Load TiO of the present invention
2The photoelectrocatalysis agent prepares according to following steps:
(1) in the oxide of 1:0.5～1.4 (weight ratio) ratio adding semiconductor ultra micro meter level titanium white powder and micron order transition metal, said transition metal comprises Fe, Mn, Al, V etc., its oxide such as Fe
2O
3, MnO
2, Al
2O
3, V
2O
5Deng;
(2) above-mentioned mixed-powder is carried out sintering under 600 ℃～1260 ℃, carry out ball milling, washing, drying, ball milling, dusting cover more then, prepare the core catalyst;
(3) according to percentage by weight the core catalyst of 0.5%～2 % and 98%～99.5% dispersion stabilizer (as carrier) are mixed, the multicomponents such as active carbon, diatomite, bentonite, perlite and salt that consist of of said dispersion stabilizer are formed.
As shown in Figure 1, load TiO of the present invention
2The device main body of photoelectrocatalysis advanced treating mud is a photoelectrocatalysis agitated reactor 1, and agitated reactor 1 center of top is provided with stirring motor 14, and the output shaft of motor 14 is provided with multilayer stirring vane 16; Agitated reactor 1 top is provided with electric charging mouth 12, and solids raised machine 11 promotes catalyst and pours in the agitated reactor 1 through charge door through the elevator track 10 of agitated reactor 1 side; Agitated reactor 1 tip designs mud inlet 21 adopts gong bar pump to add mud to agitated reactor 1 from the excess sludge pond.Aerated conduit 17 is arranged on the bottom and periphery of agitated reactor 1, on aerated conduit 17, is placed with diamond dust around aeration head 18; Be furnished with many group ultraviolet generaters 15 on the inner chamber top of agitated reactor 1, the top of agitated reactor 1 also is provided with tail-gas analyzer 13; Be provided with sludge out pipe 19 in the bottom of agitated reactor 1, adopt the potential difference method to enter middle pond; Highly locate two battery tapping valves of design, 20 row's supernatants 0.70 ~ 0.85 times of reaction tank.Aerated conduit 17 is connected with outside stainless steel conveyance conduit 2, and conveyance conduit 2 orders are connected in series with air source current-carrying upper state electronics 3, compressed air reservoir 4 and air compressor 5; Make up a prescription pond 6, the pond 7 of making up a prescription through pipeline and miniature liquid delivery pump 8 inputs input medicament in agitated reactor 1.Air source current-carrying upper state electronics 3 is the commercial goods.
As shown in Figure 2, load TiO of the present invention
2The method of photoelectrocatalysis advanced treating mud mainly comprises following steps:
The first step: in mud, add load TiO
2The photoelectrocatalysis agent is fully stirred, according to the ratio of every cubic metre of moisture 99.0% excess sludge adding supported catalyst 320g～1100g, and the over dry mud of the content of organic matter about 35%～60% promptly per ton, the interpolation supported catalyst is 32kg～110kg.
Second step: under the effect of the ultraviolet light in agitated reactor; Import air source current-carrying high energy electron; Completion is to the cyclic process of the photoelectrocatalysis of organic micella mud oxidation rupture of membranes reaction, make organic matter and mushroom in the mud constitution water, inhale Bao Shui, the crystallization water becomes flowable interstitial water.The present invention adopts catalyst TiO
2With the carrier special construction; According to concentration and the content of organic matter scalable catalyst amount and the concerted catalysis time of mud; Under the high energy electron synergy of ultraviolet light and air source current-carrying, in reaction tank, produce upper state OH free radical, organic mud is under the effect of upper state OH free radical; Cause interface s-g, s-l microelectronics transfering system that mass transfer body TiOM makes up energy state and track symmetry; Cracked sludge bacteria micelle structure, organic sewage sludge biomass network structure film is cracked, discharged structure cell water, inhale Bao Shui and constitution water.The power of ultraviolet generater is 3～6KW, working time 42～80min, and the power of air source current-carrying upper state electronics generator is 25KW～50KW, carrying bleed pressure is 2.2 * 10
5～4.8 * 10
5Pa, current-carrying upper state electrical air source amount 1200～5200L.
The 3rd step: add compound coagulation agent, the over dry mud of the content of organic matter per ton about 35%～60% adds compound coagulation agent and is: 8kg～15kg.Said compound coagulation agent is made up of the PAC (Polyaluminium Chloride) of 85～95% (percentage by weights) and 5～15% PAM (Polyacrylamide); Under coagulation agent effect; Organic mud granule isoelectric state coagulation through rupture of membranes; Toxic heavy metal ion chelating coagulation is realized the quick separation of muddy water.
The 4th step: the supernatant in the agitated reactor is entered the works liquor system; Pond in the middle of reaction back mud gets into; Be promoted to diaphragm filter press through screw pump, under usual pressure, realize the quick separation of muddy water, can obtain the mud of moisture content below 50% after the common press filtration.
Embodiment 1:
With concentration is that 15100mg/L, the content of organic matter are 32% excess sludge importing agitated reactor, and import volume is 94.3m
3, in agitated reactor, add load TiO then
2Photoelectrocatalysis agent (being configured) according to core catalyst 0.75kg and carrier 74.05 kg; After stirring 5min; The mud of opening in 15 pairs of agitated reactors of ultraviolet generater shines; Import high energy electron through high energy electron generator 3 via aerating pipelines simultaneously and react, react 50min while stirring.Add compound coagulation agent (PAC14.0kg, PAM1.89kg) through the pond of making up a prescription then; Behind the 5min supernatant in the agitated reactor is entered the works liquor system; Mud discharging is arrived middle pond; Be promoted to diaphragm filter press through screw pump,, obtain moisture content and be 47.80% mud through common press filtration.
Embodiment 2:
With concentration is that 14800mg/L, the content of organic matter are 35% excess sludge importing agitated reactor, and import volume is 95.6m
3, in agitated reactor, add load TiO then
2Photoelectrocatalysis agent (being configured) according to core catalyst 0.98kg and carrier 64.02 kg; After stirring 5min; The mud of opening in 15 pairs of agitated reactors of ultraviolet generater shines; Import high energy electron through high energy electron generator 3 via aerating pipelines simultaneously and react, react 60min while stirring.Add compound coagulation agent (PAC16.00kg, PAM1.89kg) through the pond of making up a prescription then; Behind the 5min supernatant in the agitated reactor is entered the works liquor system; Mud discharging is arrived middle pond; Be promoted to diaphragm filter press through screw pump,, obtain moisture content and be 48.20% mud through common press filtration.
Embodiment 3:
With concentration is that 16560mg/L, the content of organic matter are 20% excess sludge importing agitated reactor, and import volume is 96.8m
3, in agitated reactor, add load TiO then
2Photoelectrocatalysis agent (being configured) according to core catalyst 0.26kg and carrier 51.54 kg; After stirring 5min; The mud of opening in 15 pairs of agitated reactors of ultraviolet generater shines; Import high energy electron through high energy electron generator 3 via aerating pipelines simultaneously and react, react 30min while stirring.Add compound coagulation agent (PAC16.86kg, PAM2.18kg) through the pond of making up a prescription then; Behind the 5min supernatant in the agitated reactor is entered the works liquor system; Mud discharging is arrived middle pond; Be promoted to diaphragm filter press through screw pump,, obtain moisture content and be 48.30% mud through common press filtration.
Embodiment 4:
With concentration is that 25120mg/L, the content of organic matter are 65% paper mill mud importing agitated reactor, and import volume is 65.0m
3, in agitated reactor, add load TiO then
2Photoelectrocatalysis agent (being configured) according to core catalyst 3.27kg and carrier 160.2 kg; After stirring 5min; The mud of opening in 15 pairs of agitated reactors of ultraviolet generater shines; Import high energy electron through high energy electron generator 3 via aerating pipelines simultaneously and react, react 90min while stirring.Add compound coagulation agent (PAC16.62kg, PAM2.39kg) through the pond of making up a prescription then; Behind the 5min supernatant in the agitated reactor is entered the works liquor system; Mud discharging is arrived middle pond; Be promoted to diaphragm filter press through screw pump,, obtain moisture content and be 47.90% mud through common press filtration.
Mud and filtrating to after embodiment 1～4 processing are measured, and the mean value that gets each item index is as shown in table 1.Load TiO
2Photoelectrocatalysis advanced treating mud has clear superiority than the traditional sludge processing method, and partial data is seen table 2,3 data contrast tables.
The mud after table 1 is handled and the technical indicator of filtrating
Table 2 filtrating monitoring result
Mud monitoring result after table 3 is handled
Claims (9)
1. load TiO
2The photoelectrocatalysis agent is characterized in that preparing according to following steps:
(1) be that 1:0.5～1.4 adding semiconductor ultra micro meter level titanium white powders also mix with the oxide of micron order transition metal by weight percentage;
(2) above-mentioned mixed-powder is carried out sintering under 600 ℃～1260 ℃, carry out ball milling, washing, drying, dusting cover prepared acquisition core catalyst then;
(3) according to percentage by weight the core catalyst of 0.5%～2 % and 98%～99.5% the dispersion stabilizer as carrier are mixed.
2. according to the described load TiO of claim 1
2The photoelectrocatalysis agent is characterized in that: said transition metal comprises Fe, Mn, Al, V.
3. according to the described load TiO of claim 1
2The photoelectrocatalysis agent is characterized in that: the multicomponent that consists of in active carbon, diatomite, bentonite, perlite and the salt of dispersion stabilizer is formed.
4. one kind is utilized the catalyst in the claim 1 to carry out load TiO
2The device of photoelectrocatalysis advanced treating mud is characterized in that: photoelectrocatalysis agitated reactor (1) center of top is provided with stirring motor (14), and the output shaft of motor (14) is provided with stirring vane (16); Aerated conduit (17) is arranged on agitated reactor (1) inside, on aerated conduit (17), is placed with aeration head (18); Aerated conduit (17) is connected with outer carrier pipe road (2), and conveyance conduit (2) order is connected in series with air source current-carrying high energy electron generator (3), compressed air reservoir (4) and air compressor (5); Be furnished with many group ultraviolet generaters (15) on the inner chamber top of agitated reactor (1), the pond of making up a prescription is communicated with agitated reactor (1) with delivery pump (8) through pipeline.
5. according to the described load TiO of claim 4
2The device of photoelectrocatalysis advanced treating mud; It is characterized in that: said agitated reactor (1) top is provided with electric charging mouth (12), and solids raised machine (11) feeds in raw material in agitated reactor (1) with the catalyst lifting and through charge door through the elevator track (10) of agitated reactor (1) side.
6. according to the described load TiO of claim 4
2The device of photoelectrocatalysis advanced treating mud is characterized in that: the power of said ultraviolet generater (15) is 3～6KW, and the power of said air source current-carrying upper state electronics generator (3) is 25KW～50KW, and carrying bleed pressure is 2.2 * 10
5～4.8 * 10
5Pa, current-carrying upper state electrical air source amount 1200～5200L.
7. one kind is utilized catalyst and the device in the claim 4 in the claim 1, carries out load TiO
2The method of photoelectrocatalysis advanced treating mud is characterized in that comprising following steps:
The first step: in mud, add load TiO
2The photoelectrocatalysis agent is fully stirred;
Second step: based on stirring mud 30～90 minutes in the agitated reactor that do not coexist of the content of organic matter; Adopt the ultraviolet generater on agitated reactor top to shine simultaneously, adopt air source current-carrying upper state electronics generator in mud, to import high energy electron through the aerating pipelines of agitated reactor bottom;
The 3rd step: add compound coagulation agent and carried out flocculation reaction 5～10 minutes;
The 4th step: export the mud in the agitated reactor to middle pond, and utilize filter press to carry out press filtration.
8. according to the described load TiO of claim 7
2The method of photoelectrocatalysis advanced treating mud is characterized in that: said load TiO
2The interpolation percentage by weight of photoelectrocatalysis agent is over dry mud: supported catalyst=100:3.2 ~ 11.
9. according to the described load TiO of claim 7
2The method of photoelectrocatalysis advanced treating mud is characterized in that: said compound coagulation agent is that 85～95% PAC and 5～15% CPAM form by percentage by weight, and adding percentage by weight is over dry mud: compound coagulation agent=100:0.8 ~ 1.5.
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| CN102976583A (en) * | 2012-12-28 | 2013-03-20 | 江苏兆盛环保集团有限公司 | Deep dehydration treatment method for sludge of river courses and enclosed lakes |
| CN103028407A (en) * | 2012-12-28 | 2013-04-10 | 江苏兆盛环保集团有限公司 | Core TiO2 photoelectric catalyst for advanced sludge treatment and preparation method of catalyst |
| CN106007314A (en) * | 2016-07-04 | 2016-10-12 | 柳州若思纳米材料科技有限公司 | Method and device for repairing lake bottom sludge by titanium dioxide photocatalysis |
| CN106882914A (en) * | 2017-03-02 | 2017-06-23 | 南京航空航天大学 | The method for improving excess sludge of municipal sewage plant dewatering |
| CN106977069A (en) * | 2017-04-18 | 2017-07-25 | 江苏明轩环保科技有限公司 | A kind of continuous high pressure deep dehydration system for sludge |
| CN111977930A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Ozone oxidation and photocatalytic magnetic field enhanced sludge treatment method |
| CN113413901A (en) * | 2021-06-22 | 2021-09-21 | 大连海事大学 | Preparation method of recyclable visible-light-driven photocatalyst and application of recyclable visible-light-driven photocatalyst in excess sludge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181474A (en) * | 2001-12-17 | 2003-07-02 | Kubota Corp | Method and equipment for degrading persistent organic matter |
| CN1438913A (en) * | 2000-06-10 | 2003-08-27 | 清风株式会社 | Method and apparatus for removing pollutants using photoelectro catalytic system |
| CN101265070A (en) * | 2008-04-17 | 2008-09-17 | 高康 | Sludge solidifying agent and application thereof |
| CN202449969U (en) * | 2011-12-07 | 2012-09-26 | 江苏兆盛环保集团有限公司 | Device for deeply treating sludge through photoelectrocatalysis of load TiO2 |
-
2011
- 2011-12-07 CN CN 201110402563 patent/CN102513108B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438913A (en) * | 2000-06-10 | 2003-08-27 | 清风株式会社 | Method and apparatus for removing pollutants using photoelectro catalytic system |
| JP2003181474A (en) * | 2001-12-17 | 2003-07-02 | Kubota Corp | Method and equipment for degrading persistent organic matter |
| CN101265070A (en) * | 2008-04-17 | 2008-09-17 | 高康 | Sludge solidifying agent and application thereof |
| CN202449969U (en) * | 2011-12-07 | 2012-09-26 | 江苏兆盛环保集团有限公司 | Device for deeply treating sludge through photoelectrocatalysis of load TiO2 |
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| CN106882914A (en) * | 2017-03-02 | 2017-06-23 | 南京航空航天大学 | The method for improving excess sludge of municipal sewage plant dewatering |
| CN106882914B (en) * | 2017-03-02 | 2021-04-06 | 南京航空航天大学 | Method for improving dehydration performance of excess sludge of municipal sewage treatment plant |
| CN106977069A (en) * | 2017-04-18 | 2017-07-25 | 江苏明轩环保科技有限公司 | A kind of continuous high pressure deep dehydration system for sludge |
| CN111977930A (en) * | 2020-08-13 | 2020-11-24 | 杨兰 | Ozone oxidation and photocatalytic magnetic field enhanced sludge treatment method |
| CN111977930B (en) * | 2020-08-13 | 2022-12-13 | 长治市博奇环保科技有限公司 | Ozone oxidation and photocatalytic magnetic field enhanced sludge treatment method |
| CN113413901A (en) * | 2021-06-22 | 2021-09-21 | 大连海事大学 | Preparation method of recyclable visible-light-driven photocatalyst and application of recyclable visible-light-driven photocatalyst in excess sludge |
| CN113413901B (en) * | 2021-06-22 | 2023-10-03 | 大连海事大学 | Preparation method of recyclable visible light catalyst and application of recyclable visible light catalyst in excess sludge |
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