CN104891714A - Treatment method and novel composite water purifying agent for purifying water of micro-polluted water sources - Google Patents
Treatment method and novel composite water purifying agent for purifying water of micro-polluted water sources Download PDFInfo
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- CN104891714A CN104891714A CN201510355075.6A CN201510355075A CN104891714A CN 104891714 A CN104891714 A CN 104891714A CN 201510355075 A CN201510355075 A CN 201510355075A CN 104891714 A CN104891714 A CN 104891714A
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Abstract
The invention discloses a treatment method and a novel composite water purifying agent for purifying water of micro-polluted water sources. The treatment method includes steps of (1), effectively distributing raw water which is delivered from rivers or reservoirs to water distributing wells of water purification plants by pumps, then feeding the raw water in sedimentation tanks to carry out sedimentation treatment on the raw water, adding 25-35mg of the composite water purifying agent into 1L of waste water at stages, removing pollutants in the micro-polluted water sources by the composite water purifying agent so as to effectively guarantee removal effects, uniformly mixing the composite water purifying agent with the waste water, and then allowing the waste water to stand still for 40-50min; (2), further reducing pollutants in the raw water at filtering stages after sedimentation treatment is carried out on the raw water; (3), allowing advanced treatment stages to be carried out on the raw water by the aid of ozone and activated carbon so as to expectedly meet 106 outlet water quality indexes of drinking water sanitation standards GB 5749-2006; (4), dewatering sludge in a concentrated manner and allowing the sludge to be outwardly conveyed to landfill. The sludge is generated at the various stages.
Description
Technical field
The present invention relates to the water purification agent technical field of water treatment, particularly relate to the compound type purifying agent that organic pollutant in micro polluted source is removed in a kind of application.
Background technology
In recent years along with the acceleration of industrial expansion, urbanization process and the increase of agrochemicals kind and quantity, many water sources have been subject to pollution in various degree; And along with expanding economy, the progress of water quality analysis means, and the mankind are to the requirements at the higher level of drinking-water quality, the concern that micro-pollution is subject to is also more and more higher.But, the process micro-polluted water technique (coagulation → precipitation → filtration → sterilization) of existing routine effectively can not remove the pollutent such as organism, ammonia nitrogen in micro-polluted source water, the liquid chlorine soil ulmin be easy in former water is combined and produces disinfection byproduct (DBP) (DBPs) simultaneously, direct threat drinking person healthy, cannot meet the needs of people to drinking water safety; Simultaneously along with the increasingly stringent of Drinking Water water quality standard, constantly there is new problem in Micro-polluted Water.Therefore, the Micro-Polluted Water Treatment scheme being applicable to China's national situation is selected to cause the great attention of people.
For the process problem of micro-polluted source water, on the basis of tap water conventional treatment process, mainly contain intensive treatment technology, preconditioning technique and further treatment technique at present.
1, traditional water technology is strengthened
Intensive treatment is for the current water quality standard improved constantly, on existing Process ba-sis through improvement, optimize and newly-increased be major objective to remove colourity that viral micro-organisms, organic pollutant and organic pollutant cause, to smell taste, algae, Algae toxins, haloform antecedent, mutagenic matter etc.
(1) Mixing enhancement+
Mixing enhancement+ refers to by improving coagulating agent performance, optimised coagulation processing condition, improves coagulation-settlement process to the removal effect of organic pollutant.
(2) reinforced deposition technology
Precipitate and separate is the important component part of conventional handling technology of water supply, and the effect of precipitate and separate has considerable influence to subsequent treatment process and final outflow water water quality.Mainly contain several mode at present and strengthen precipitation process: add new high-efficiency polymeric flocculant, improve the settling character of flocs unit; Optimize the HYDRODYNAMIC CONDITION RELATING TO improving settling tank, improve deposition efficiency; Improve the effective concentration of coagulated particles, improve the continuity net that former Organic substance in water is carried out and catch, sweep effects such as wrapping up in, adsorb, be coprecipitated, thus improve its precipitate and separate effect.
(3) intensive filtration technology
Intensive filtration technology is then under the condition of not prechlorination, cultivates breed microorganism at filter material surface, utilizes the organism in microbial growth breeding activity removal water.
2, preconditioning technique
Pretreatment technology is set before traditional technology, the pollutent in water is tentatively removed, the removal ability to pollutent can be improved to greatest extent.
(1) chemical oxidization method
Chemical oxidation pre-treatment technology is exactly rely on the chemical oxidizing agent added, and decomposes and destroys organic pollutants, and recycling coagulating agent removes colloidal suspended substance, makes water quality reach processing requirements.
(2) biological oxidation process
Biological Pretreatment referred to before conventional water-purifying process, set up biological treatment, and by means of the metabolic activity of microbial population, removing in water can the biochemical organism particularly pollutent such as low molecular weight soluble organism, ammonia nitrogen, nitrite, iron, manganese.
(3) preadsorption treatment technology
Absorption pre-treatment mainly utilizes the organic pollutant in the characterization of adsorption removal micro-polluted source water of sorbent material, and conventional sorbent material has gac, clay, diatomite, zeolite etc.Wherein gac is to BOD
5, COD
cr, colourity and most of organism have good adsorptive power.
3, micro polluted source further treatment technique
Advanced treatment refers to after conventional treatment process, adopts suitable treatment process, and the pollutent can not effectively remove conventional treatment process or the precursor of disinfection byproduct (DBP) are removed.
(1) ozone and activated carbon coupling further treatment technique
Ozone-activated carbon adsorption technique is first carried out ozone oxidation and is carried out charcoal absorption again, can play the advantage of ozone, gac simultaneously.Larger molecular organics oxygenolysis can be small organic molecule by adding of ozone, promotes the removal effect of gac.
(2) BAC Technology
Biological activated carbon is the biological oxidation utilizing growth microorganism on the activated carbon, thus reaches the object removing pollutent.
(3) membrane filtration further treatment technique
Membrane filtration is another important, efficient advanced treatment means in micro-polluted source water advanced treatment field, more efficiently can remove in water smell taste, colourity, disinfection by-products formation potential and bacterium etc. based on the membrane filtration technique of micro-filtration, ultrafiltration, nanofiltration, reverse osmosis.
(4) photochemical catalytic oxidation further treatment technique
A kind of Photosensitized Oxidation that photochemical catalytic oxidation is is sensitizing agent with chemical stability and the good TiO2 of the catalytic activity n-type semiconductor that is representative, in water, Priority-Control Organic Pollutants has very strong oxidation capacity.
Current patented technology mostly biases toward the flocculating effect of water purification agent, the such as patent No. is CN200510020301, CN200810235293, CN200910066022, CN200910099410 etc., be mostly based on by carrying out modification flocculation to some carrier, and then improve the effect of water purification agent.Also the patent had also has research to micro-pollution, such as patent CN201010248701 and CN201010248705, they are considered is more the consideration of further removing turbidity and sterilization aspect, and adopts which type of water purification agent for the water source of micro-pollution, and it is less that current patent sets foot in.But the water quality due to micro polluted source has a strong impact on the safe drinking water of the people, so present market is starved of one not only can take into account flocculation sediment, and there is the compound type purifying agent of process micro polluted source.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind for the treatment of process for micro polluted source, the present invention uses the water purification agent composition of special preparation in treatment process, not only can amount of consumption of drugs be few, purifying water effect good playing, and possess the water purification function for micro polluted source.
For achieving the above object, this invention takes following technical scheme:
For a treatment process for micro polluted source water quality purification, comprise following technological step:
(1) former water carries out effective water distribution from rivers or the reservoir distributing well being pumped to water purification plant, then enters settling tank and carries out precipitation process; In this stage, add the pollutent of composite water purifying agent removing micro polluted source, to ensure effective removal effect; Composite water purifying agent adds after in waste water, mixes standing 40 ~ 50min, and composite water purifying agent dosage is 25 ~ 35mg/L water;
(2) the former water after precipitation process enters filtration stage, reduces pollutent further;
(3) the former water after can carry out the advanced treatment stage of ozone and activated carbon, to reaching 106 effluent quality indexs of drinking water sanitary standard GB 5749-2006;
(4) mud of each stage generation just can be transported to landfill outward after concentrating and carrying out sludge dewatering.
In technique scheme, composite water purifying agent of the present invention can be used for the water treatment of micro polluted source, and controlling throwing amount is 25 ~ 35mg/L.
In technique scheme, described NEW TYPE OF COMPOSITE water purification agent, with parts by weight, composed of the following components:
Yellow mud powder: 10 ~ 20, potassium permanganate: 0.5 ~ 1, chitosan: 5 ~ 10,
Zeolite powder: 5 ~ 10, clorox: 1 ~ 5, aluminum chloride: 5 ~ 8,
Magnesium oxide: 10 ~ 15, sodium bicarbonate: 5 ~ 10, calcium oxide: 5 ~ 15,
Carbon granules: 10 ~ 20, iron powder: 10 ~ 20, aluminium iron polychloride: 1 ~ 5.
Described composite water purifying agent preparation technology is: by proportioning, after the mixing of each component, dispersed with stirring evenly after finished product.
Compared with prior art, the present invention has following beneficial effect:
The composite water purifying agent of special preparation is added in clean water treatment operation of the present invention, the distinguishing feature of this composite water purifying agent not only to reach flocculating effect that is common or modification water purification agent, and for strengthening compression double electric layer under the rough sledding such as micro polluted source, improve the effect that adsorption bridging increases basicity, simultaneously, the effect of light electrolysis also can all play good promoter action for the purification of water quality of micro polluted source, alleviate the load of subsequent filter further, thus more ensure the water quality safety of tap water.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A treatment process for raw water quality purification, comprises following technological step:
(1) former water carries out effective water distribution from rivers or the reservoir distributing well being pumped to water purification plant, then enters settling tank and carries out precipitation process; In this stage, add the pollutent of composite water purifying agent removing micro polluted source, to ensure effective removal effect; Composite water purifying agent adds after in waste water, mixes standing 40 ~ 50min, and composite water purifying agent dosage is 25 ~ 35mg/L water;
(2) the former water after precipitation process enters filtration stage, reduces pollutent further;
(3) the former water after can carry out the advanced treatment stage of ozone and activated carbon, to reaching 106 effluent quality indexs of drinking water sanitary standard GB 5749-2006;
(4) mud of each stage generation just can be transported to landfill outward after concentrating and carrying out sludge dewatering.
In technique scheme, described new type compound water purification agent, with parts by weight, composed of the following components:
Yellow mud powder: 10, potassium permanganate: 0.5, chitosan: 5,
Zeolite powder: 5, clorox: 1, aluminum chloride: 5,
Magnesium oxide: 10, sodium bicarbonate: 5, calcium oxide: 5,
Carbon granules: 10, iron powder: 10, aluminium iron polychloride: 1.
In technique scheme, compound type purifying agent of the present invention can be used for the water treatment of micro-pollution, and controlling throwing amount is 25 ~ 35mg/L.
Get above-mentioned mensuration of carrying out pollutent-permanganate indices through the reacted water leg water outlet of composite water purifying agent, obtain following result: permanganate indices clearance is greater than 60%.
Embodiment 2
The treatment process of the present embodiment with embodiment 1, the new type compound water purification agent used by the present embodiment, with parts by weight, composed of the following components:
Yellow mud powder: 15, potassium permanganate: 0.8, chitosan: 8,
Zeolite powder: 8, clorox: 3, aluminum chloride: 7,
Magnesium oxide: 13, sodium bicarbonate: 8, calcium oxide: 10,
Carbon granules: 15, iron powder: 15, aluminium iron polychloride: 3.
In technique scheme, compound type purifying agent of the present invention can be used for the water treatment of micro-pollution, and controlling throwing amount is 25 ~ 35mg/L.
Get above-mentioned mensuration of carrying out permanganate indices through the reacted water leg water outlet of composite water purifying agent, obtain following result: permanganate indices clearance is greater than 70%.
Embodiment 3
The treatment process of the present embodiment with embodiment 1, the new type compound water purification agent used by the present embodiment, with parts by weight, composed of the following components:
Yellow mud powder: 20, potassium permanganate: 1, chitosan: 10,
Zeolite powder: 10, clorox: 5, aluminum chloride: 8,
Magnesium oxide: 15, sodium bicarbonate: 10, calcium oxide: 15,
Carbon granules: 20, iron powder: 20, aluminium iron polychloride: 5.
In technique scheme, compound type purifying agent of the present invention can be used for the water treatment of micro-pollution, and controlling throwing amount is 25 ~ 35mg/L.
Get above-mentioned mensuration of carrying out pollutent-permanganate indices through the reacted water leg water outlet of composite water purifying agent, obtain following result: permanganate indices clearance is greater than 70%.
In above-described embodiment, described compound type purifying agent preparation technology is: by proportioning, after the mixing of each component, dispersed with stirring evenly after finished product.
Common commercially available prod is all for the preparation of the raw material of compound type purifying agent in above-described embodiment.
Claims (2)
1., for a treatment process for micro polluted source water quality purification, it is characterized in that, comprise following technological step:
(1) former water carries out effective water distribution from rivers or the reservoir distributing well being pumped to water purification plant, then enters settling tank and carries out precipitation process; In this stage, add the pollutent of composite water purifying agent removing micro polluted source, to ensure effective removal effect; Composite water purifying agent adds after in waste water, mixes standing 40 ~ 50min, and composite water purifying agent dosage is 25 ~ 35mg/L water;
(2) the former water after precipitation process enters filtration stage, reduces pollutent further;
(3) the former water after can carry out the advanced treatment stage of ozone and activated carbon, to reaching 106 effluent quality indexs of drinking water sanitary standard GB 5749-2006;
(4) mud of each stage generation just can be transported to landfill outward after concentrating and carrying out sludge dewatering.
2. a new type compound water purification agent, is characterized in that: with parts by weight, composed of the following components:
Yellow mud powder: 10 ~ 20, potassium permanganate: 0.5 ~ 1, chitosan: 5 ~ 10,
Zeolite powder: 5 ~ 10, clorox: 1 ~ 5, aluminum chloride: 5 ~ 8,
Magnesium oxide: 10 ~ 15, sodium bicarbonate: 5 ~ 10, calcium oxide: 5 ~ 15,
Carbon granules: 10 ~ 20, iron powder: 10 ~ 20, aluminium iron polychloride: 1 ~ 5.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948149A (en) * | 2016-07-14 | 2016-09-21 | 慎叶 | Novel riverway water treatment purifying agent |
| CN107792900A (en) * | 2017-11-23 | 2018-03-13 | 广西小草信息产业有限责任公司 | A kind of alkalescent drinking water cleanser and preparation method thereof |
| CN108017199A (en) * | 2018-01-22 | 2018-05-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Reduce the method and processing system of silicone content in industrial water |
| CN109574157A (en) * | 2018-11-21 | 2019-04-05 | 南京清科中晟环境技术有限公司 | A kind of environmentally friendly natural minerals water body purifying material |
| CN110182919A (en) * | 2019-04-22 | 2019-08-30 | 广东亨利达环保科技有限公司 | A kind of purification sewage-treating agent and preparation method thereof |
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| CN1557736A (en) * | 2004-01-14 | 2004-12-29 | 哈尔滨工业大学 | Oxidation coagulation aiding method using ozone and potassium permanganate |
| CN1257117C (en) * | 2003-03-17 | 2006-05-24 | 哈尔滨工业大学 | Permangnate preoxidation and bioactive carbon combined use to remove contamination technique |
| CN104230118A (en) * | 2014-09-28 | 2014-12-24 | 西安华陆环保设备有限公司 | Method of removing AOC (Assimilable Organic Carbon) from drinking water |
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2015
- 2015-06-24 CN CN201510355075.6A patent/CN104891714A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257117C (en) * | 2003-03-17 | 2006-05-24 | 哈尔滨工业大学 | Permangnate preoxidation and bioactive carbon combined use to remove contamination technique |
| CN1557736A (en) * | 2004-01-14 | 2004-12-29 | 哈尔滨工业大学 | Oxidation coagulation aiding method using ozone and potassium permanganate |
| CN104230118A (en) * | 2014-09-28 | 2014-12-24 | 西安华陆环保设备有限公司 | Method of removing AOC (Assimilable Organic Carbon) from drinking water |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948149A (en) * | 2016-07-14 | 2016-09-21 | 慎叶 | Novel riverway water treatment purifying agent |
| CN107792900A (en) * | 2017-11-23 | 2018-03-13 | 广西小草信息产业有限责任公司 | A kind of alkalescent drinking water cleanser and preparation method thereof |
| CN108017199A (en) * | 2018-01-22 | 2018-05-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Reduce the method and processing system of silicone content in industrial water |
| CN109574157A (en) * | 2018-11-21 | 2019-04-05 | 南京清科中晟环境技术有限公司 | A kind of environmentally friendly natural minerals water body purifying material |
| CN110182919A (en) * | 2019-04-22 | 2019-08-30 | 广东亨利达环保科技有限公司 | A kind of purification sewage-treating agent and preparation method thereof |
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Application publication date: 20150909 |
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