CN103723851B - A kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation - Google Patents
A kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation Download PDFInfo
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- CN103723851B CN103723851B CN201310638274.9A CN201310638274A CN103723851B CN 103723851 B CN103723851 B CN 103723851B CN 201310638274 A CN201310638274 A CN 201310638274A CN 103723851 B CN103723851 B CN 103723851B
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Abstract
The invention discloses a kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation, can microscale harmful substance and pathogenic micro-organism cause in reuse process in actual response water potential security risk.The secondary effluent of municipal sewage plant is introduced into pH regulator pond, then the mixing acid of citric acid, acetic acid, oxysuccinic acid, boric acid is added to pH regulator pond, adjust ph is 5.5 ~ 6.5, then adding potassium hydroxide adjust ph is 6.8 ~ 7.2, again the water outlet in pH regulator pond is entered ozone reaction device from top, ozone gas enters from bottom, and gas, water adverse current carry out ozone oxidation reaction, and water outlet obtains the limpid ecological garden water of odorless after quartz sand filter tank.The inventive method mainly through four kinds of acid of meticulously selecting to carry out preliminary deodorizing, Be very effective, again through the thorough deodorizing of ozonize, then filter and obtain the limpid ecological garden water of odorless, the organic contamination substrate concentration in the ecological garden water of preparation, colourity, turbidity significantly reduce.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, particularly a kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation.
Background technology
Along with the fast development of Chinese society economy and the quickening of urbanization process, urban water shortage and problem of environmental pollution are particularly outstanding, water resources oneself become restriction socio-economic development important factor.Municipal effluent and urban water supply are almost suitable, and having water yield abundance, the features such as water conditioning, is a kind of potential water resources, and the regeneration of municipal effluent is one of effective way solving the shortage of current water resources mouth benefit.
At present; ozonize method oneself be widely used in municipal sewage treatment; because ozone is a kind of strong oxidizer, have very strong sterilization, sterilization, taste removal, discolor, the characteristic of degradation of organic substances, the organism in itself and sewage reacts and organic matter molecular mass usually can be made to diminish; aromaticity disappears; polarity strengthens, and biodegradability improves, and more oxidized organism generates oxygen G&W under ozonization; can be the oxygenation of subsequent biological treatment technique, be conducive to the growth of aerobic microbiological.
Although ozonize method has a lot of advantages, but it is low to there is ozone utilization rate, oxidation capacity is not enough, oxidative degradation is difficult to for segmental stability organic pollutant, the structural change of parent compound is only confined to some organic degradeds, likely can produces the defects such as the intermediate oxidation product that toxicity degrades more greatly or more not easily.Research shows this blue or green crocodile of mouth (Japanese medaka (d-rR)) fish-egg to be exposed in the municipal effluent secondary effluent after by the ozone oxidation of doses, create disadvantageous effect to blue or green crocodile fetal development, abnormal rate obviously raises; The fish embryo that squatted by rainbow to be exposed to after ozone oxidation in secondary effluent, has found the phenomenon of rainbow crouching fish impaired development; When adopting ozonize method to process the sewage containing humic acid, algae, fulvic acid etc., in process water outlet, the content of haloform can obviously increase, and haloform has carcinogenic, aberration inducing, to mutation effect, human body generation can be made acute and chronic poisoning; When ozonize is carried out to the sewage containing sea water, the sea hydrochlorate etc. with carcinogenesis can be generated.
The conventional pollution index that the existing reusing sewage water quality standard of China limits can not microscale harmful substance and pathogenic micro-organism cause in reuse process in actual response water potential security risk.Along with increasing novel micro noxious pollutant detects gradually in sewage, the potential information requirement of reusing sewage is gradually by people are paid close attention to.
Summary of the invention
The object of the invention is to provide a kind of more simple, economic, safe and effective sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation for above-mentioned prior art Problems existing.
For achieving the above object, the invention provides following technical scheme:
A kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation, the secondary effluent of municipal sewage plant is introduced into pH regulator pond, then the mixing acid of citric acid, acetic acid, oxysuccinic acid, boric acid is added to pH regulator pond, adjust ph is 5.5 ~ 6.5, then adding potassium hydroxide adjust ph is 6.8 ~ 7.2, again the water outlet in pH regulator pond is entered ozone reaction device from top, ozone gas enters from bottom, gas, water adverse current carry out ozone oxidation reaction, and water outlet obtains the limpid ecological garden water of odorless after quartz sand filter tank; Wherein, in ozone treating process, the consumption of ozone gas is 0.05 ~ 5mgO
3/ mg DOC (ozone amount that namely in waste water, every milligram of dissolved organic carbon adds is 0.05 ~ 5mg).
As further scheme, adding mixing acid adjust ph is 6.
As further scheme, adding potassium hydroxide adjust ph is 7.
As further scheme, citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:0.5 ~ 2:0.5 ~ 2:0.5 ~ 2.
As further scheme, citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:1:1:1.
As further scheme, in ozone treating process, the consumption of ozone gas is 0.1 ~ 1mgO
3/ mg DOC.
Beneficial effect:
1, the inventive method mainly through four kinds of acid of meticulously selecting to carry out preliminary deodorizing, Be very effective, again through the thorough deodorizing of ozonize, then filter and obtain the limpid ecological garden water of odorless, the organic contamination substrate concentration in the ecological garden water of preparation, colourity, turbidity significantly reduce;
2, the security of ecological garden water prepared of the inventive method is high, and bio-toxicity significantly reduces;
3, the inventive method technological operation is simple, and reused water processing time shorten, reduces the cost of the process of municipal effluent secondary effluent, improves reused water processing efficiency.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation, the secondary effluent of municipal sewage plant is introduced into pH regulator pond, then the mixing acid of citric acid, acetic acid, oxysuccinic acid, boric acid is added to pH regulator pond, adjust ph is 5.5, described citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:0.5:0.5:0.5; Then adding potassium hydroxide adjust ph is 6.8, again the water outlet in pH regulator pond is entered ozone reaction device from top, ozone gas enters from bottom, and gas, water adverse current carry out ozone oxidation reaction, and water outlet obtains the limpid ecological garden water of odorless after quartz sand filter tank; Wherein, in ozone treating process, the consumption of ozone gas is 0.05mgO
3/ mg DOC (ozone amount that namely in waste water, every milligram of dissolved organic carbon adds is 0.05mg).
Embodiment 2
A kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation, the secondary effluent of municipal sewage plant is introduced into pH regulator pond, then the mixing acid of citric acid, acetic acid, oxysuccinic acid, boric acid is added to pH regulator pond, adjust ph is 6, described citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:1:1:1; Then adding potassium hydroxide adjust ph is 6, again the water outlet in pH regulator pond is entered ozone reaction device from top, ozone gas enters from bottom, and gas, water adverse current carry out ozone oxidation reaction, and water outlet obtains the limpid ecological garden water of odorless after quartz sand filter tank; Wherein, in ozone treating process, the consumption of ozone gas is 2mgO
3/ mg DOC (ozone amount that namely in waste water, every milligram of dissolved organic carbon adds is 2mg).
Embodiment 3
A kind of sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation, the secondary effluent of municipal sewage plant is introduced into pH regulator pond, then the mixing acid of citric acid, acetic acid, oxysuccinic acid, boric acid is added to pH regulator pond, adjust ph is 6.5, described citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:2:0.5:1; Then adding potassium hydroxide adjust ph is 7.2, again the water outlet in pH regulator pond is entered ozone reaction device from top, ozone gas enters from bottom, and gas, water adverse current carry out ozone oxidation reaction, and water outlet obtains the limpid ecological garden water of odorless after quartz sand filter tank; Wherein, in ozone treating process, the consumption of ozone gas is 5mgO
3/ mg DOC (ozone amount that namely in waste water, every milligram of dissolved organic carbon adds is 5mg).
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. the sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation, it is characterized in that, the secondary effluent of municipal sewage plant is introduced into pH regulator pond, then citric acid is added to pH regulator pond, acetic acid, oxysuccinic acid, the mixing acid of boric acid, adjust ph is 5.5 ~ 6.5, then adding potassium hydroxide adjust ph is 6.8 ~ 7.2, again the water outlet in pH regulator pond is entered ozone reaction device from top, ozone gas enters from bottom, gas, water adverse current carries out ozone oxidation reaction, water outlet obtains the limpid ecological garden water of odorless after quartz sand filter tank, wherein, in ozone treating process, the consumption of ozone gas is 0.05 ~ 5mgO
3/ mg DOC.
2. the sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation according to claim 1, it is characterized in that, adding mixing acid adjust ph is 6.
3. the sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation according to claim 1, is characterized in that, adding potassium hydroxide adjust ph is 7.
4. the sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation according to claim 1, is characterized in that, citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:0.5 ~ 2:0.5 ~ 2:0.5 ~ 2.
5. the sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation according to claim 1 or 4, is characterized in that, citric acid: acetic acid: oxysuccinic acid: the volume ratio of boric acid is 1:1:1:1.
6. the sewage Dual deodorization method based on mixing acid acidifying and ozone oxidation according to claim 1, it is characterized in that, in ozone treating process, the consumption of ozone gas is 0.1 ~ 1mgO
3/ mg DOC.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008194558A (en) * | 2007-02-08 | 2008-08-28 | Toshiba Corp | Water treatment system and method |
| CN102745832A (en) * | 2011-04-19 | 2012-10-24 | 中国科学院生态环境研究中心 | Method for treating town sewage into water for ecological landscape |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008194558A (en) * | 2007-02-08 | 2008-08-28 | Toshiba Corp | Water treatment system and method |
| CN102745832A (en) * | 2011-04-19 | 2012-10-24 | 中国科学院生态环境研究中心 | Method for treating town sewage into water for ecological landscape |
Non-Patent Citations (2)
| Title |
|---|
| 饮用水中典型致嗅物质去除技术研究;李勇等;《环境科学》;20081130;第29卷(第11期);全文 * |
| 高效液相色谱法测定生物除臭剂中4种有机酸;张彦凤等;《理化检验-化学分册》;20091231;第45卷(第3期);全文 * |
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