CN102173524A - Water treatment method for ultrasonically improving oxidation of pollutant with permanganate - Google Patents
Water treatment method for ultrasonically improving oxidation of pollutant with permanganate Download PDFInfo
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Abstract
The invention relates to a water treatment method, particularly a water treatment method for ultrasonically improving oxidation of pollutants with permanganates, and aims to solve the problems in the prior art the speed of oxidation with permanganates is slow, the treatment effect is not stable, the dispersion of produced manganese dioxide nanoparticles is poor and the catalytic rate is low. The method has three forms. The first form comprises the following steps of: pre-treating water; feeding the effluent into a mixing pond, a flocculation pond and a precipitation pond in sequence; filtering the effluent; feeding to a clear water pond and sterilizing. The second form comprises the following steps of: feeding the water into a mixing pond and then pre-treating the water, feeding the effluent to a flocculation pond and then a precipitation pond, filtering the effluent, feeding to a clear water pond and sterilizing. The third form comprises the following steps of: feeding the water into a mixing pond; adding permanganates, inducers and coagulants under ultrasonic action; feeding the effluent to a flocculation pond and then a precipitation pond; filtering the effluent; feeding to a clear water pond and sterilizing. The method has stable operating effects, is favorable for the dispersion of manganese dioxide nanoparticles which are used as the reduction product of permanganates, improves the catalytic ability of manganese dioxide in oxidation of permanganates, and promotes the decomposition of permanganates to produce highly-active intermediate-state manganese.
Description
Technical field
The present invention relates to a kind of water treatment method.
Background technology
The hazardous contaminant of introducing in the human being's production life process (as persistent pollutant, endocrine disrupter, medicine and personal-care supplies etc.) has constituted serious potential threat to the urban drinking water water quality safety.Conventional water technology can't satisfy new " drinking water sanitary standard ", needs new technology badly and ensures water quality safety.Existing Urban water supply factory generally adopts permanganate and permanganate composite chemical oxidizing process, this water factory in China is widely used, can remove and smell flavor, colourity, turbidity, algae toxin, disinfection byproduct (DBP) antecedent in the water, the control algal grown is stablized effluent quality.The problem that this technology exists also that permanganate oxidation speed is slow, treatment effect is unstable, easily penetrates simultaneously, newborn nano-manganese dioxide poor dispersion, catalysis speed are slow, be easy to stop up the filter tank.
Summary of the invention
The present invention seeks to adopt in order to solve existing Urban water supply factory that permanganate and permanganate composite chemical oxidizing process exist that permanganate oxidation speed is slow, treatment effect is unstable, easily penetrate, newborn nano-manganese dioxide poor dispersion, catalysis speed are slow, be easy to stop up the problem in filter tank, and provide a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent.
Utilize the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters pretreatment unit, adds permanganate simultaneously and inductor reacts under ultrasonication; Two, the water outlet of pretreatment unit flows into mixing pit, and dosing coagulant, mixes stirring back inflow flocculation basin and flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline or independent pond body as reactor in the step 1, and when being reactor with the pipeline, flow velocity is 1～1.5m/s, and when being reactor with independent pond body, the pond body links to each other with mixing pit; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min.
Utilize the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters mixing pit, and dosing coagulant, inflow pretreatment unit after mixing is stirred adds permanganate simultaneously under ultrasonication and inductor reacts; Two, the water outlet of pretreatment unit inflow flocculation basin flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline or independent pond body as reactor in the step 1, and when being reactor with the pipeline, flow velocity is 1～1.5m/s, and when being reactor with independent pond body, the pond body links to each other with mixing pit; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min.
Utilize the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters mixing pit, under ultrasonication, add permanganate, inductor and coagulating agent simultaneously, the inflow flocculation basin flocculates after mixing stirring reaction, flows into settling tank then; Two, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; The ultrasonic mixing pit that directly acts in the step 1 wherein; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min; Coagulating agent is poly-ferric chloride, polymerize aluminum chloride or polymeric ferric aluminum in the step 1, and the rate of adding is 0.5%～2% (quality).
In the water treatment method of permanganate oxidation depollution, ultransonic reinforcing mass transfer effect can promote permanganate to contact with the effective of pollutent with applications of ultrasound in the present invention; Ultransonic dissemination helps the dispersion of permanganate reduzate nano-manganese dioxide, strengthens the ability of Manganse Dioxide catalysis permanganate oxidation; The oxygen radical that ultrasonic cavitation produces can promote permanganate to decompose generation high reactivity intermediate state manganese.
The ultrasonic technology that the present invention uses is a kind of environmental friendliness technology, can effectively remove hardly degraded organic substance in the water, algae, microorganism etc., has advantages such as simple to operate, easy to control.
The present invention utilizes the water treatment of ultrasound-enhanced permanganate oxidation pollutent, technical requirements is not high, cost is low, and it is convenient to transform, and can be applicable to the upgrading up to standard of Urban water supply factory water quality, operating performance is stable, be difficult for penetrating, can not produce the filter tank and stop up the limpid free from extraneous odour of water outlet, can improve comprehensively and handle back water quality, water outlet meets " drinking water sanitary standard ".
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment utilizes the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters pretreatment unit, adds permanganate simultaneously and inductor reacts under ultrasonication; Two, the water outlet of pretreatment unit flows into mixing pit, and dosing coagulant, mixes stirring back inflow flocculation basin and flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline or independent pond body as reactor in the step 1, and when being reactor with the pipeline, flow velocity is 1～1.5m/s, and when being reactor with independent pond body, the pond body links to each other with mixing pit; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min.
Pending water is surface water or the underground water that is subjected to organic contamination in the present embodiment.
Embodiment two: what present embodiment and embodiment one were different is that permanganate throwing amount is 0.1mg/L in the step 1, and the ratio of inductor and permanganate is 1: 10, and ultrasonic power density is 1W/cm
2, the ultrasonication time is 5min.Other step and parameter are identical with embodiment one.
Embodiment three: what present embodiment and embodiment one were different is that permanganate throwing amount is 10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1, and ultrasonic power density is 200W/cm
2, the ultrasonication time is 10s.Other step and parameter are identical with embodiment one.
Embodiment four: what present embodiment and embodiment one were different is that permanganate throwing amount is 1～8mg/L in the step 1, and the ratio of inductor and permanganate is 1: 2～8, and ultrasonic power density is 10～180W/cm
2, the ultrasonication time is 1～4min.Other step and parameter are identical with embodiment one.
Embodiment five: what present embodiment and embodiment one were different is that permanganate throwing amount is 4mg/L in the step 1, and the ratio of inductor and permanganate is 1: 5, and ultrasonic power density is 150W/cm
2, the ultrasonication time is 2min.Other step and parameter are identical with embodiment one.
Embodiment six: what present embodiment was different with one of embodiment one to five is that ultransonic producer is sonde-type or slot type in the step 1.Other step and parameter are identical with one of embodiment one to five.
Embodiment seven: what present embodiment was different with one of embodiment one to six is the mode that ultransonic decoration form adopts single sound field, quadrature sound field, parallel sound field or the combination of many sound fields in the step 1.Other step and parameter are identical with one of embodiment one to six.
Adopt different acoustic fields can use same frequency in the present embodiment, the perhaps sound field of different frequency stack.
Embodiment eight: present embodiment is different with one of embodiment one to seven is that permanganate is the mixing of a kind of in potassium permanganate, the sodium permanganate or two kinds in the step 1.Other step and parameter are identical with one of embodiment one to seven.
When permanganate is mixture in the present embodiment, presses arbitrary proportion and mix.
Embodiment nine: what present embodiment was different with one of embodiment one to eight is that inductor is the salt that contains the salt of mn ion or contain ferrous ion in the step 1; The salt that contains mn ion is one or more in manganous sulfate, Manganous chloride tetrahydrate, the manganous nitrate; The salt that contains ferrous ion is one or more among ferrous sulfate, iron protochloride, the ferrous perchlorate.Other step and parameter are identical with one of embodiment one to eight.
When the salt that contains mn ion in the present embodiment is mixture, presses arbitrary proportion and mix; When the salt that contains ferrous ion is mixture, presses arbitrary proportion and mix.
Embodiment ten: what present embodiment was different with one of embodiment one to nine is that coagulating agent is poly-ferric chloride, polymerize aluminum chloride or polymeric ferric aluminum in the step 2, and the rate of adding is 0.5%～2% (quality).Other step and parameter are identical with one of embodiment one to nine.
Embodiment 11: present embodiment is different with one of embodiment one to ten is to filter in the step 3 to be meant that the settling tank water outlet filters by individual layer filtrate, gac/quartz sand double-layer filter material or biological activity carbon filterbed.Other step and parameter are identical with one of embodiment one to ten.
What the individual layer filtrate adopted in the present embodiment is quartz sand.
Embodiment 12: present embodiment is different with one of embodiment one to 11 is that sterilization is meant hydromining chlorine disinfectant in the clean water basin in the step 3, perhaps adopts chlorine and chloramines combined disinfection.Other step and parameter are identical with one of embodiment one to 11.
Embodiment 13: present embodiment utilizes the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters mixing pit, and dosing coagulant, inflow pretreatment unit after mixing is stirred adds permanganate simultaneously under ultrasonication and inductor reacts; Two, the water outlet of pretreatment unit inflow flocculation basin flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline or independent pond body as reactor in the step 1, and when being reactor with the pipeline, flow velocity is 1～1.5m/s, and when being reactor with independent pond body, the pond body links to each other with mixing pit; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min.
Pending water is surface water or the underground water that is subjected to organic contamination in the present embodiment.
Embodiment 14: what present embodiment and embodiment 13 were different is that coagulating agent is poly-ferric chloride, polymerize aluminum chloride or polymeric ferric aluminum in the step 1, and the rate of adding is 0.5%～2% (quality).Other step and parameter are identical with embodiment 13.
Embodiment 15: what present embodiment was different with embodiment 13 or 14 is that permanganate throwing amount is 0.1mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1, and ultrasonic power density is 200W/cm
2, the ultrasonication time is 10s.Other step and parameter are identical with embodiment 13 or 14.
Embodiment 16: what present embodiment was different with embodiment 13 or 14 is that permanganate throwing amount is 10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 10, and ultrasonic power density is 1W/cm
2, the ultrasonication time is 5min.Other step and parameter are identical with embodiment 13 or 14.
Embodiment 17: what present embodiment was different with embodiment 13 or 14 is that permanganate throwing amount is 2～9mg/L in the step 1, and the ratio of inductor and permanganate is 1: 2～8, and ultrasonic power density is 20～180W/cm
2, the ultrasonication time is 50s～3min.Other step and parameter are identical with embodiment 13 or 14.
Embodiment 18: what present embodiment was different with embodiment 13 or 14 is that permanganate throwing amount is 5mg/L in the step 1, and the ratio of inductor and permanganate is 1: 6, and ultrasonic power density is 160W/cm
2, the ultrasonication time is 1min.Other step and parameter are identical with embodiment 13 or 14.
Embodiment 19: what present embodiment was different with one of embodiment 13 to 18 is that ultransonic producer is sonde-type or slot type in the step 1.Other step and parameter are identical with one of embodiment 13 to 18.
Embodiment 20: what present embodiment was different with one of embodiment 13 to 19 is the mode that ultransonic decoration form adopts single sound field, quadrature sound field, parallel sound field or the combination of many sound fields in the step 1.Other step and parameter are identical with one of embodiment 13 to 19.
Adopt different acoustic fields can use same frequency in the present embodiment, the perhaps sound field of different frequency stack.
Embodiment 21: present embodiment is different with one of embodiment 13 to 20 is that permanganate is the mixing of a kind of in potassium permanganate, the sodium permanganate or two kinds in the step 1.Other step and parameter are identical with one of embodiment 13 to 20.
When permanganate is mixture in the present embodiment, presses arbitrary proportion and mix.
Embodiment 22: what present embodiment was different with one of embodiment 13 to 21 is that inductor is the salt that contains the salt of mn ion or contain ferrous ion in the step 1; The salt that contains mn ion is one or more in manganous sulfate, Manganous chloride tetrahydrate, the manganous nitrate; The salt that contains ferrous ion is one or more among ferrous sulfate, iron protochloride, the ferrous perchlorate.Other step and parameter are identical with one of embodiment 13 to 21.
When the salt that contains mn ion in the present embodiment is mixture, presses arbitrary proportion and mix; When the salt that contains ferrous ion is mixture, presses arbitrary proportion and mix.
Embodiment 23: present embodiment is different with one of embodiment 13 to 22 is to filter in the step 3 to be meant that the settling tank water outlet filters by individual layer filtrate, gac/quartz sand double-layer filter material or biological activity carbon filterbed.Other step and parameter are identical with one of embodiment 13 to 22.
What the individual layer filtrate adopted in the present embodiment is quartz sand.
Embodiment 24: present embodiment is different with one of embodiment 13 to 23 is that sterilization is meant hydromining chlorine disinfectant in the clean water basin in the step 3, perhaps adopts chlorine and chloramines combined disinfection.Other step and parameter are identical with one of embodiment 13 to 23.
Embodiment 25: present embodiment utilizes the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters mixing pit, under ultrasonication, add permanganate, inductor and coagulating agent simultaneously, the inflow flocculation basin flocculates after mixing stirring reaction, flows into settling tank then; Two, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; The ultrasonic mixing pit that directly acts in the step 1 wherein; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min; Coagulating agent is poly-ferric chloride, polymerize aluminum chloride or polymeric ferric aluminum in the step 1, and the rate of adding is 0.5%～2% (quality).
Pending water is surface water or the underground water that is subjected to organic contamination in the present embodiment.
Embodiment 26: what present embodiment and embodiment 25 were different is that permanganate throwing amount is 0.1mg/L in the step 2, and the ratio of inductor and permanganate is 1: 10, and ultrasonic power density is 1W/cm
2, the ultrasonication time is 5min.Other step and parameter are identical with embodiment 25.
Embodiment 27: what present embodiment and embodiment 25 were different is that permanganate throwing amount is 10mg/L in the step 2, and the ratio of inductor and permanganate is 1: 1, and ultrasonic power density is 200W/cm
2, the ultrasonication time is 10s.Other step and parameter are identical with embodiment 25.
Embodiment 28: what present embodiment and embodiment 25 were different is that permanganate throwing amount is 1～9mg/L in the step 2, and the ratio of inductor and permanganate is 1: 2～9, and ultrasonic power density is 5～180W/cm
2, the ultrasonication time is 1～4min.Other step and parameter are identical with embodiment 25.
Embodiment 29: what present embodiment and embodiment 25 were different is that permanganate throwing amount is 7mg/L in the step 2, and the ratio of inductor and permanganate is 1: 4, and ultrasonic power density is 100W/cm
2, the ultrasonication time is 3min.Other step and parameter are identical with embodiment 25.
Embodiment 30: what present embodiment was different with one of embodiment 25 to 29 is that ultransonic producer is sonde-type or slot type in the step 1.Other step and parameter are identical with one of embodiment 25 to 29.
The embodiment hentriaconta-: what present embodiment was different with one of embodiment 25 to 30 is the mode that ultransonic decoration form adopts single sound field, quadrature sound field, parallel sound field or the combination of many sound fields in the step 1.Other step and parameter are identical with one of embodiment 25 to 30.
Adopt different acoustic fields can use same frequency in the present embodiment, the perhaps sound field of different frequency stack.
Embodiment 32: present embodiment and embodiment 25 to one of hentriaconta-different be that permanganate is the mixing of a kind of in potassium permanganate, the sodium permanganate or two kinds in the step 1.Other step and parameter are identical to one of hentriaconta-with embodiment 25.
When permanganate is mixture in the present embodiment, presses arbitrary proportion and mix.
Embodiment 33: what present embodiment was different with one of embodiment 25 to 32 is that inductor is the salt that contains the salt of mn ion or contain ferrous ion in the step 1; The salt that contains mn ion is one or more in manganous sulfate, Manganous chloride tetrahydrate, the manganous nitrate; The salt that contains ferrous ion is one or more among ferrous sulfate, iron protochloride, the ferrous perchlorate.Other step and parameter are identical with one of embodiment 25 to 32.
When the salt that contains mn ion in the present embodiment is mixture, presses arbitrary proportion and mix; When the salt that contains ferrous ion is mixture, presses arbitrary proportion and mix.
Embodiment 34: present embodiment is different with one of embodiment 25 to 33 is to filter in the step 2 to be meant that the settling tank water outlet filters by individual layer filtrate, gac/quartz sand double-layer filter material or biological activity carbon filterbed.Other step and parameter are identical with one of embodiment 25 to 33.
What the individual layer filtrate adopted in the present embodiment is quartz sand.
Embodiment 35: present embodiment is different with one of embodiment 25 to 34 is that sterilization is meant hydromining chlorine disinfectant in the clean water basin in the step 2, perhaps adopts chlorine and chloramines combined disinfection.Other step and parameter are identical with one of embodiment 25 to 34.
Embodiment 36: a kind of water treatment method of ultrasound-enhanced permanganate oxidation pollutent that utilizes of present embodiment carries out according to the following steps: one, pending water enters pretreatment unit, adds potassium permanganate simultaneously and Manganous chloride tetrahydrate reacts under ultrasonication; Two, the water outlet of pretreatment unit flows into mixing pit, and adds polymerize aluminum chloride, mixes stirring back inflow flocculation basin and flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline as reactor in the step 1, and flow velocity is 1m/s; Potassium permanganate throwing amount is 3mg/L in the step 1, and the ratio of Manganous chloride tetrahydrate and potassium permanganate is 1: 5, and ultrasonic power density is 100W/cm
2, the ultrasonication time is 2min.
Pending water is surface water in the present embodiment; Ultransonic producer is a sonde-type; Adopt single sound field; The polymerize aluminum chloride rate of adding is 1% (quality).
Ultrasound-enhanced permanganate oxidation is disposed of sewage in the present embodiment, and operating performance is stable, and can not produce the filter tank and stop up, the limpid free from extraneous odour of the water outlet of its clean water basin, after testing, water outlet meets " drinking water sanitary standard ".
Embodiment 37: a kind of water treatment method of ultrasound-enhanced permanganate oxidation pollutent that utilizes of present embodiment carries out according to the following steps: one, pending water enters mixing pit, and add polymeric ferric aluminum, inflow pretreatment unit after mixing is stirred adds sodium permanganate simultaneously under ultrasonication and manganous sulfate reacts; Two, the water outlet of pretreatment unit inflow flocculation basin flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts independent pond body as reactor in the step 2, and the pond body links to each other with mixing pit; Sodium permanganate throwing amount is 4mg/L in the step 2, and the ratio of manganous sulfate and sodium permanganate is 1: 6, and ultrasonic power density is 150W/cm
2, the ultrasonication time is 3min.
Pending water is the underground water that is subjected to organic contamination in the present embodiment; Ultransonic producer is a slot type; Adopt the quadrature sound field; The polymeric ferric aluminum rate of adding is 1.5% (quality).
Ultrasound-enhanced permanganate oxidation is disposed of sewage in the present embodiment, and operating performance is stable, and can not produce the filter tank and stop up, the limpid free from extraneous odour of the water outlet of its clean water basin, after testing, water outlet meets " drinking water sanitary standard ".
Embodiment 38: a kind of water treatment method of ultrasound-enhanced permanganate oxidation pollutent that utilizes of present embodiment carries out according to the following steps: one, pending water enters mixing pit, under ultrasonication, add potassium permanganate, sodium permanganate, ferrous sulfate and poly-ferric chloride simultaneously, the inflow flocculation basin flocculates after mixing stirring reaction, flows into settling tank then; Two, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; The ultrasonic mixing pit that directly acts in the step 1 wherein; The throwing amount of potassium permanganate and sodium permanganate is 7mg/L in the step 1, and the ratio of ferrous sulfate and potassium permanganate and sodium permanganate is 1: 5, and ultrasonic power density is 200W/cm
2, the ultrasonication time is 20s; Coagulating agent is a poly-ferric chloride in the step 1, and the rate of adding is 2% (quality).
Pending water is the underground water that is subjected to organic contamination in the present embodiment; Ultransonic producer is a slot type; Adopt parallel sound field.
Ultrasound-enhanced permanganate oxidation is disposed of sewage in the present embodiment, and operating performance is stable, and can not produce the filter tank and stop up, the limpid free from extraneous odour of the water outlet of its clean water basin, after testing, water outlet meets " drinking water sanitary standard ".
Claims (10)
1. water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent, it is characterized in that utilizing the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters pretreatment unit, adds permanganate simultaneously and inductor reacts under ultrasonication; Two, the water outlet of pretreatment unit flows into mixing pit, and dosing coagulant, mixes stirring back inflow flocculation basin and flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline or independent pond body as reactor in the step 1, and when being reactor with the pipeline, flow velocity is 1～1.5m/s, and when being reactor with independent pond body, the pond body links to each other with mixing pit; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min.
2. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 1 is characterized in that ultransonic producer is sonde-type or slot type in the step 1.
3. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 1 and 2 is characterized in that the mode that ultransonic decoration form adopts single sound field, quadrature sound field, parallel sound field or many sound fields to make up in the step 1.
4. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 3 is characterized in that permanganate in the step 1 is the mixing of a kind of in potassium permanganate, the sodium permanganate or two kinds.
5. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 4 is characterized in that inductor is the salt that contains the salt of mn ion or contain ferrous ion in the step 1; The salt that contains mn ion is one or more in manganous sulfate, Manganous chloride tetrahydrate, the manganous nitrate; The salt that contains ferrous ion is one or more among ferrous sulfate, iron protochloride, the ferrous perchlorate.
6. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 5 is characterized in that coagulating agent is poly-ferric chloride, polymerize aluminum chloride or polymeric ferric aluminum in the step 2, and the rate of adding is 0.5%～2% (quality).
7. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 6 is characterized in that in the step 3 filtering and is meant that the settling tank water outlet filters by individual layer filtrate, gac/quartz sand double-layer filter material or biological activity carbon filterbed.
8. a kind of water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent according to claim 7 is characterized in that in the step 3 that sterilization is meant the hydromining chlorine disinfectant in the clean water basin, perhaps adopts chlorine and chloramines combined disinfection.
9. water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent, it is characterized in that utilizing the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters mixing pit, and dosing coagulant, inflow pretreatment unit after mixing is stirred adds permanganate simultaneously under ultrasonication and inductor reacts; Two, the water outlet of pretreatment unit inflow flocculation basin flocculates, and flows into settling tank then; Three, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; Wherein pretreatment unit adopts pipeline or independent pond body as reactor in the step 1, and when being reactor with the pipeline, flow velocity is 1～1.5m/s, and when being reactor with independent pond body, the pond body links to each other with mixing pit; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min.
10. water treatment method that utilizes ultrasound-enhanced permanganate oxidation pollutent, it is characterized in that utilizing the water treatment method of ultrasound-enhanced permanganate oxidation pollutent to carry out according to the following steps: one, pending water enters mixing pit, under ultrasonication, add permanganate, inductor and coagulating agent simultaneously, the inflow flocculation basin flocculates after mixing stirring reaction, flows into settling tank then; Two, the settling tank water outlet enters clean water basin after filtering, promptly finishes the water treatment that utilizes ultrasound-enhanced permanganate oxidation pollutent after the sterilization; The ultrasonic mixing pit that directly acts in the step 1 wherein; Permanganate throwing amount is 0.1～10mg/L in the step 1, and the ratio of inductor and permanganate is 1: 1～10, and ultrasonic power density is 1～200W/cm
2, the ultrasonication time is 10s～5min; Coagulating agent is poly-ferric chloride, polymerize aluminum chloride or polymeric ferric aluminum in the step 1, and the rate of adding is 0.5%～2% (quality).
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| CN103523894A (en) * | 2013-10-28 | 2014-01-22 | 哈尔滨工业大学 | Method for water treatment through permanganate homogeneous catalytic oxidation |
| CN103553237A (en) * | 2013-11-06 | 2014-02-05 | 西安建筑科技大学 | Process system for efficiently removing ammonia nitrogen in surface water |
| CN103977761A (en) * | 2014-05-14 | 2014-08-13 | 广西师范大学 | A modification method of porous materials capable of efficiently removing air pollutants |
| CN103977762A (en) * | 2014-05-14 | 2014-08-13 | 广西师范大学 | A modification method of active carbon fiber capable of efficiently removing air pollutants |
| CN104291432A (en) * | 2014-08-21 | 2015-01-21 | 华南理工大学 | Method for deeply removing thallium in water through ultrasonic-assisted oxidation |
| CN107162307A (en) * | 2017-07-12 | 2017-09-15 | 赵伟洲 | A kind of sewage-treatment plant |
| US11084743B2 (en) | 2015-10-21 | 2021-08-10 | Texas A&M University System | Method for removal of recalcitrant selenium species from wastewater |
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Cited By (9)
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| CN103523894A (en) * | 2013-10-28 | 2014-01-22 | 哈尔滨工业大学 | Method for water treatment through permanganate homogeneous catalytic oxidation |
| CN103553237A (en) * | 2013-11-06 | 2014-02-05 | 西安建筑科技大学 | Process system for efficiently removing ammonia nitrogen in surface water |
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| CN103977761A (en) * | 2014-05-14 | 2014-08-13 | 广西师范大学 | A modification method of porous materials capable of efficiently removing air pollutants |
| CN103977762A (en) * | 2014-05-14 | 2014-08-13 | 广西师范大学 | A modification method of active carbon fiber capable of efficiently removing air pollutants |
| CN104291432A (en) * | 2014-08-21 | 2015-01-21 | 华南理工大学 | Method for deeply removing thallium in water through ultrasonic-assisted oxidation |
| US11084743B2 (en) | 2015-10-21 | 2021-08-10 | Texas A&M University System | Method for removal of recalcitrant selenium species from wastewater |
| US11235994B2 (en) | 2015-10-21 | 2022-02-01 | The Texas A & M University System | Methods for treating selenocyanate in wastewater |
| CN107162307A (en) * | 2017-07-12 | 2017-09-15 | 赵伟洲 | A kind of sewage-treatment plant |
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