CN106746035A - A kind of drinking water algae-removing technology - Google Patents
A kind of drinking water algae-removing technology Download PDFInfo
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- CN106746035A CN106746035A CN201710135986.7A CN201710135986A CN106746035A CN 106746035 A CN106746035 A CN 106746035A CN 201710135986 A CN201710135986 A CN 201710135986A CN 106746035 A CN106746035 A CN 106746035A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- 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
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of drinking water algae-removing technology, ozone is passed through in algae-containing water, ozone is fully contacted with algae-containing water, time of contact is 5~30min, ozone dosage is 0.5~1.0mg/L；Water after filter is obtained through the algae-containing water after preozonized treatment after coagulation, precipitation and filtration treatment successively again；Pure oxygen is passed through in water after filter, pure oxygen is fully contacted with water after filter, time of contact is 2~5min, and the dosage of pure oxygen is 1~5mg/L；Heavy-oxygen-enriched water in the defeated pond to activated carbon of heavy-oxygen-enriched water, will be made to be fully contacted with activated carbon and to obtain advanced water treatment；Drinking water up to standard is obtained after advanced water treatment is sterilized.The of the invention technique compares with routine techniques, and its investment, managerial skills, occupation of land are suitable with its, and major advantage is relatively low stability, high treating effect, running cost；And present invention process except algae it is in hgher efficiency, except algae efficiency can reach 95% and more than.
Description
Technical field
The present invention relates to a kind of drinking water algae-removing technology, belong to municipal water supply processing technology field.
Background technology
Existing Tap water factory algae removal technology can be divided into Microfilter and be removed except algae, air floatation alga removing, direct mistake filter algae, pre-oxidation
Algae, enhanced-coagulation, biological activated carbon remove algae etc., wherein：
Microfilter removes algae：Except algae is inefficient (10~70% or so)；Microfilter to the clearance of algae with algae kind
Class is different and have very big difference, algae is more tiny to be more difficult to removal, and 10% is only removed sometimes.But the coagulant that these algae are consumed
Amount is maximum, and because the turbidity that Microfilter can be removed is little, so using the hardly possible reduction coagulant dosage of Microfilter method
Amount.The method is better than coagulating sedimentation to the removal effect of algae, but all very low to turbidity, colourity, CODMn clearances, far away from mixed
Retrogradation is formed sediment.
Air floatation alga removing：To algae blooms water removal effect significantly, 85% clearance can be even reached sometimes, but turbidity removal is imitated
Really poor, air floatation alga removing efficiency is extremely difficult to more than 80%；The power consumption and operating cost of air floatation alga removing are higher；Algae-residue is more intractable,
Stink weight near flotation tank, operating environment is poor；Release is easily blocked；The balance of dissolving water level and pressure easily goes wrong.
Directly cross and filter algae：The direct technique for filtering is carried out using homogeneous sand filter or double-bed filter, clearance is
15%~75%；It is high to operation and management level requirement, slightly slip up, it is possible to influence effluent quality；Directly filtering is not suitable for place
The high water of reason amount containing algae, should increase sedimentation basin and depositing reservoir before filtering ponds, but so it is also possible that the algae of filter tank water outlet
Content is more than 1000m L-1Situation, need to further process；The situation of this method algae suspension negligible amounts suitable for raw water.
Pre-oxidation removes algae：Pre-oxidation typically uses oxidation method except algae, in aoxidizing water by adding oxidant
Alga cells and organic matter.The oxidant for using at present mainly has：Ozone, potassium permanganate, liquid chlorine, sodium hypochlorite, titanium dioxide
Chlorine etc..Ozone is a kind of very strong oxidant, can effectively kill algae, destroys frond, and effectively removal can releasable algae
Toxin, dead frustule is easy to be removed in follow-up handling process.In addition, the organic carbon discharged after algae is oxidized,
Bilgy odour metabolin etc. also can be by ozone oxidation.Potassium permanganate is also a kind of strong oxidizer, can also effectively improve the removal of algae
Rate.But potassium permanganate easily increases the colourity of water after adding, manganese is also had sometimes exceeded.Liquid chlorine, sodium hypochlorite, chlorine dioxide
It is oxidant, prechlorination is also conventional method.But during prechlorination, chlorine can give birth to organic matter effect higher in water
Into halogenated organic matters, water quality is influenceed.
Enhanced-coagulation：Enhanced coagulation can make alga-killing rate bring up to more than 80%, while all kinds of in also can remove water
Organic matter.But also it is believed that, coagulation assisted method can only effectively improve clearance of the algae in filter tank, can not be effective
Improve its clearance in sedimentation basin.
Biological activated carbon removes algae：Charcoal absorption and conventional processes are used in combination and the clearance of Algae toxins are exceeded
80%.The material of the microbes degraded removal charcoal absorption on activated carbon, while the absorption for discharging activated carbon again is lived
Property site, activated carbon is kept lasting adsorption capacity, increase the service life.
Also many technology combination algae removal technologies：Algae-containing water first is processed with ozone, ozone is used again after coagulation, precipitation, filtering
Treatment, is adsorbed using biological activated carbon afterwards, and drinking water can be obtained after last chlorination；But the algae removal rate of the method
It is 80-85%, water after filter adds ozone, and treatment effect is not obvious, and wastes energy consumption
The content of the invention
The technical problems to be solved by the invention are directed to the deficiencies in the prior art, and provide a kind of drinking water and remove
Algae technique, saving energy consumption, and treatment effeciency is higher, except algae efficiency can reach 95% and more than.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of drinking water algae-removing technology, comprises the following steps：
Ozone is passed through in algae-containing water, ozone and algae-containing water be fully contacted after again successively through coagulation, precipitation and filtering technique
Water after filter is obtained after treatment；Pure oxygen is passed through in the water after filter for obtaining and is processed, obtain heavy-oxygen-enriched water；Heavy-oxygen-enriched water through activated carbon at
Manage, disinfect after obtain drinking water up to standard.
In above-mentioned technical proposal, described drinking water algae-removing technology specifically includes following steps：
(1) pretreatment and conventional treatment：Ozone is passed through in algae-containing water, ozone is fully contacted with algae-containing water, during contact
Between be 5~30min, ozone dosage be 0.5~1.0mg/L；Algae-containing water after treated by ozone again successively through coagulation, precipitation and
Water after filter is obtained after filtering technique treatment；
In the present invention, described coagulation, precipitation and filtering technique use drinking water treatment field conventional treatment process；
In the present invention, ozone contacts 5~30min with algae-containing water, is greatly improved killing efficiency and energy of oxidation to algae
Power, through subsequent treatment process after, make treatment water up to standard；Ozone dosage is 0.5~1.0mg/L, ozone dosage and time of contact
It is relevant with raw water quality, if background substance content is higher in water quality, competitive with algae can grab and ozone reaction chance, institute
Increased with corresponding ozone dosage and time of contact；
In the present invention, ozone follows the oxidative pathway of ozone molecule or its HO for producing except the mechanism of algae, low dosage
Pre- ozone can influence the form of frustule, the cell rupture that will not make, and then remove algae by with coagulant collective effect.High dose
Ozone alga cells wall, cell membrane can be destroyed by oxidation, cause intracellular dissolved organic matter discharge so as to inactivate algae；
(2) pure oxygen treatment：Pure oxygen is passed through in the water after filter that step (1) is obtained, pure oxygen is fully contacted with water after filter
To heavy-oxygen-enriched water, time of contact is 2~5min, and the dosage of pure oxygen is 1~5mg/L；
In the present invention, substituted with pure oxygen and conventional add ozone, you can be filled in follow-up biological active carbon treatment process
Oxygen, improves the treatment effect of consequent activities charcoal, odor that effective removal is caused due to algae etc.；Can also be saved using pure oxygen smelly
The mass energy expended in oxygen generating process；
(3) activated carbon treatment：The heavy-oxygen-enriched water that step (2) is obtained is defeated in activated carbon, makes heavy-oxygen-enriched water abundant with activated carbon
Contact obtains advanced water treatment, and time of contact is 10~15min；
In the present invention, activated carbon treatment technology is that drinking water field often uses handling process, and activated carbon therein is the field
Conventional activated carbon；Heavy-oxygen-enriched water with activated carbon fully, is not removed in contact removal step (1) after coagulation, precipitation filtration treatment
Dissolved organic matter, odor of algae release etc.；
(4) sterilize：Drinking water up to standard is obtained after advanced water treatment is sterilized；
In the present invention, disinfection technology is that drinking water field often uses handling process, such as uses hypochlorite disinfectant.
In above-mentioned technical proposal, in step (1), ozone is preferably 5~15min with the time of contact of algae-containing water.
The advantage of technical solution of the present invention is：The of the invention technique compares with routine techniques, its investment, managerial skills,
Take up an area suitable with its, major advantage is relatively low stability, high treating effect, running cost；And present invention process except algae efficiency
It is higher, except algae efficiency can reach 95% and more than.
Specific embodiment
The specific embodiment to technical solution of the present invention is described in detail below, but the present invention is not limited in following description
Hold：
Embodiment 1：
A kind of drinking water algae-removing technology, it is characterised in that comprise the following steps：
(1) ozone pretreatment：Ozone is passed through in algae-containing water (algae density be 8,000,000/L), makes the two in contact chamber
15min or so is fully contacted, ozone dosage is 0.5mg/L；
(2) conventional treatment：Obtain coagulation drinking water after coagulation, precipitation and filtration treatment successively again.Wherein, coagulation
Flocculation process is：Mechanical mixture, incorporation time 30S, dosing coagulant ferric trichloride 10mg/L；Using accelerator,
Parameter is upflow velocity 1.0mm/s, and clear water zone adds inclined tube；Gas-water backwash filtration, flow velocity 8m/h are used in filtration treatment technique；
(3) pure oxygen treatment：Pure oxygen is passed through in filter post processing water, the two contact 5min is obtained oxygen-rich treated water, pure oxygen
Addition be 4mg/L；
(4) activated carbon treatment：Oxygen-rich treated water is imported into the activated carbon pond equipped with activated carbon, oxygen-rich treated is drunk
Water is fully contacted as 12min obtains advanced water treatment with activated carbon；
(5) sterilize：Advanced water treatment obtains drink up to standard after being sterilized through sodium hypochlorite (dosage 10mg/L. concentration 10%)
Use water；After being processed through the present embodiment method, except algae efficiency can reach 95%.
Examples detailed above is technology design and technical characterstic to illustrate the invention, can not limit of the invention with this
Protection domain.Equivalent transformation or modification that all essence of the invention is done, should all cover in protection scope of the present invention
Within.
Claims (3)
1. a kind of drinking water algae-removing technology, it is characterised in that comprise the following steps：Ozone is passed through in algae-containing water, ozone with contain
Algae water obtains water after filter after being processed through coagulation, precipitation and filtering technique successively again after being fully contacted；Pure oxygen is passed through the filter for obtaining
Processed in water afterwards, obtained heavy-oxygen-enriched water；Heavy-oxygen-enriched water charcoal treated, disinfect after obtain drinking water up to standard.
2. technique according to claim 1, it is characterised in that described drinking water algae-removing technology specifically includes following step
Suddenly：
(1) pretreatment and conventional treatment：Ozone is passed through in algae-containing water, ozone is fully contacted with algae-containing water, time of contact is 5
~30min, ozone dosage is 0.5~1.0mg/L；Algae-containing water after treated by ozone, then through coagulation, precipitation and filter successively
Water after filter is obtained after treatment；
(2) pure oxygen treatment：Pure oxygen is passed through in the water after filter that step (1) is obtained, pure oxygen is fully contacted with water after filter and is obtained richness
Oxygen water, time of contact is 2~5min, and the dosage of pure oxygen is 1~5mg/L；
(3) activated carbon treatment：The heavy-oxygen-enriched water that step (2) is obtained is defeated in activated carbon, heavy-oxygen-enriched water is fully contacted with activated carbon
Obtain advanced water treatment；
(4) sterilize：Drinking water up to standard is obtained after advanced water treatment is sterilized.
3. technique according to claim 1, it is characterised in that in step (1), during the contact of described ozone with algae-containing water
Between be 5~15min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710135986.7A CN106746035A (en) | 2017-03-09 | 2017-03-09 | A kind of drinking water algae-removing technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710135986.7A CN106746035A (en) | 2017-03-09 | 2017-03-09 | A kind of drinking water algae-removing technology |
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| CN106746035A true CN106746035A (en) | 2017-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056049A1 (en) * | 2017-09-25 | 2019-03-28 | Grieger Investments Pty Ltd | Water treatment apparatus and method |
| CN114314705A (en) * | 2021-11-25 | 2022-04-12 | 合肥供水集团有限公司 | Purification treatment method of overproof raw water |
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|---|---|---|---|---|
| EP0930273A2 (en) * | 1998-01-20 | 1999-07-21 | Alwin Dipl.-Ing Eppler | Method and device for the treatment of surface water with a high algae content |
| CN1807288A (en) * | 2005-01-21 | 2006-07-26 | 中国科学院生态环境研究中心 | Method for deep treatment of bromine ion-containing drinking water |
| CN102633409A (en) * | 2012-04-26 | 2012-08-15 | 复旦大学 | Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water |
| CN104817217A (en) * | 2015-04-17 | 2015-08-05 | 北京建筑大学 | Ozone pre-oxidation water treatment device and water treatment method thereof |
| CN105366794A (en) * | 2015-12-22 | 2016-03-02 | 江南大学 | High-oxygen water preparation system based on gas and liquid micro-nano cutting refinement |
-
2017
- 2017-03-09 CN CN201710135986.7A patent/CN106746035A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| EP0930273A2 (en) * | 1998-01-20 | 1999-07-21 | Alwin Dipl.-Ing Eppler | Method and device for the treatment of surface water with a high algae content |
| CN1807288A (en) * | 2005-01-21 | 2006-07-26 | 中国科学院生态环境研究中心 | Method for deep treatment of bromine ion-containing drinking water |
| CN102633409A (en) * | 2012-04-26 | 2012-08-15 | 复旦大学 | Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water |
| CN104817217A (en) * | 2015-04-17 | 2015-08-05 | 北京建筑大学 | Ozone pre-oxidation water treatment device and water treatment method thereof |
| CN105366794A (en) * | 2015-12-22 | 2016-03-02 | 江南大学 | High-oxygen water preparation system based on gas and liquid micro-nano cutting refinement |
Non-Patent Citations (1)
| Title |
|---|
| 中国环境科学学会: "《中国环境科学学会学术年会论文集》", 30 June 2012 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056049A1 (en) * | 2017-09-25 | 2019-03-28 | Grieger Investments Pty Ltd | Water treatment apparatus and method |
| CN111163632A (en) * | 2017-09-25 | 2020-05-15 | 格里格投资有限公司 | Water treatment apparatus and method |
| CN114314705A (en) * | 2021-11-25 | 2022-04-12 | 合肥供水集团有限公司 | Purification treatment method of overproof raw water |
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