CN102001716B - Method for controlling water eutrophication by using hydrogen nitrate and formic acid - Google Patents
Method for controlling water eutrophication by using hydrogen nitrate and formic acid Download PDFInfo
- Publication number
- CN102001716B CN102001716B CN 201010541840 CN201010541840A CN102001716B CN 102001716 B CN102001716 B CN 102001716B CN 201010541840 CN201010541840 CN 201010541840 CN 201010541840 A CN201010541840 A CN 201010541840A CN 102001716 B CN102001716 B CN 102001716B
- Authority
- CN
- China
- Prior art keywords
- water
- nitric acid
- formic acid
- eutrophication
- water body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Abstract
The invention relates to environmental protection, in particular to a method for controlling water eutrophication by using hydrogen nitrate and formic acid. For solving the problem of water eutrophication and periodical green algae outbreak caused by water eutrophication, hydrogen nitrate and formic acid are added into eutrophic water with slow water exchange, effectively controlled external phosphorus input and seriously contaminated internal phosphorus and/or hydrogen nitrate is added in a 10 to 50 centimeter deposition interface of the water, wherein the addition of the hydrogen nitrate and formic acid in the water body reduces the pH value of the water temporarily, weakens the growth advantage of green algae, improves the oxidoreduction condition of the water-deposit interface and reduces the generation and release of materials with peculiar smell; and the addition of the hydrogen nitrate in the deposit can promote the degradation of organic matters in the deposit and improve the oxidoreduction condition of the water-deposit interface. Therefore, the acid addition in the water and the acid addition in the deposit both promotes the improvement on the oxidoreduction condition of the water-deposit interface and reduce the phosphorus content of the water body and the release intensity of phosphorus in deposit, so the strength and frequency of green algae outbreak is lowered and the production conditions for green algae outbreak are eliminated.
Description
Technical field
The present invention relates to environment protection, a kind of specifically method of utilizing nitric acid and formic acid to administer body eutrophication.
Background technology
Because pollute in the basin and aquaculture is improper, is representative with Dian Chi, Taihu Lake and Chaohu, big and small lake, reservoir and the pond of China much have been in the eutrophication state.The landscape water body in many cities is no exception.The blue-green algae that body eutrophication causes is periodically broken out and causes water quality to degenerate, and threatens aquaculture and drinking water safety, reduces its peripheral eco-environmental quality.
In order to control blue algae bloom, to be controlled at needed nitrogen of algal grown in the water body or phosphorus under the finite concentration at least.The content of nitrogen is generally far above the content of phosphorus in the water body, and when nitrogen became the limiting factor of algal grown, some algae can obtain nitrogen by the biological nitrogen fixation approach.Therefore, in order to control the blue algae bloom of eutrophication water, the content of phosphorus should be more effective than the content of the nitrogen in the control water body in the control water body.But, the needed phosphorus of algal grown, except that importing from external source, also can be from the endogenous release of phosphorus in the water body.Therefore,, not only to control the input of external source phosphorus, also will control the endogenous release of phosphorus in the water body, can effectively control the outburst of blue-green algae the serious eutrophic water body of the endogenous release of some phosphorus.
The endogenous release of phosphorus mainly is controlled by three links in the eutrophication water, i.e. the recycle of phosphorus in the exchange of the conversion of the phosphorus in the settling and migration, water-settling interface phosphorus, the overlying water.The exchange of accelerating the sedimentation of phosphorus in the overlying water and reducing water-settling interface phosphorus is the key of the endogenous release of phosphorus in the control eutrophication water.
In the existing measure of administering body eutrophication, accelerate the content of water body exchange can reduction phosphorus in the eutrophication water, but that this type of operates under a lot of practical situation is infeasible; Dredging can reduce the release of surface deposit phosphorus, but the implementation cost costliness; Use the compound of nitrocalcite and iron, aluminium can strengthen the adsorptive power of settling, but the reliability of regulation effect is not high to phosphorus.
Summary of the invention
The object of the invention is to provide a method of utilizing nitric acid and formic acid to administer body eutrophication.
For achieving the above object, the method for the present invention's employing is:
Periodically break out problem at body eutrophication and the blue-green algae that causes thereof,, external source phosphorus input slow to the water body exchange is effectively controlled but adds nitric acid and formic acid in the with serious pollution eutrophication water of endogenous phosphorus and/or add nitric acid in the 10-50 of this water body cm settling interface, improve the redox situation at water body-settling interface, reduce the content of phosphorus in the water body and the release strength of sediment phosphorus, reduce intensity and the frequency and the final generation condition of eliminating blue algae bloom of blue algae bloom then.
After interpolation nitric acid added in the described water body, the nitrate concentration of water body was 0.25-5 mM; After adding formic acid, the formate concentration of water body is 0-5 mM; The mol ratio of formic acid and nitric acid is 0-5; The addition of nitric acid and formic acid and ratio are by the pH and the COD decision of water body.The pH that adds the processed water body of the temporary reduction of acid treatment, the growth vigor of reduction blue-green algae improves the redox situation at water-settling interface, reduces the formation and the release of smell substance in the water body, strengthens the stability of surface deposit phosphorus.
Adding first-selected algal grown in the period low temperature season slowly of nitric acid and formic acid to described water body, secondly is suitable early stage of algal grown, is blue algae bloom early stage and blue algae bloom period at last.
Add nitric acid and formic acid in the described water body and be period algal grown slowly during low temperature season, the nitric acid of interpolation and formic acid make the mean value of pH under illumination condition of water body below 8.0, and the concentration of nitrate radical is 0.25-5 mM.
When be the early stage of suitable blue algae growth the period of interpolation nitric acid and formic acid in the described water body, the nitric acid of interpolation and formic acid made the mean value of pH under illumination condition of water body below 7.3, and the concentration of nitrate radical is 0.25-5 mM.
Be blue algae bloom during early stage the period of adding nitric acid and formic acid in the described water body, and promptly the concentration of chloroplast(id) a is 20-50 mg/m
3, the mean value of pH under illumination condition that interpolation nitric acid and formic acid make water body is below 7.0, and the concentration of nitrate radical is 0.25-5 mM;
Be during the blue algae bloom time period of adding nitric acid and formic acid in the described water body, and promptly the concentration of chloroplast(id) a surpasses 50 mg/m
3, the nitric acid of interpolation and formic acid make the mean value of pH under illumination condition of water body below 6.7, and the concentration of nitrate radical is 0.25-5 mM.
Be the non-outburst of the blue-green algae period between the spring in autumn the preferred period of adding nitric acid in the 10-50 cm settling interface of described water body, and behind the interpolation nitric acid, the mean concns of 0-50 cm settling nitrate radical is 10-100 mM.The nitric acid that adds makes and forms different pH microcells in the settling at the settling internal diffusion.Microbial activities is strong in the suitable pH microcell of microbial activities, and organic matter degradation is accelerated, and improves the redox situation at water-settling interface, strengthens the stability of surface deposit phosphorus.
The advantage that the present invention had:
1. the present invention adds nitric acid and formic acid to water body, and it is convenient to implement, and effect is multiple, in reduction blue algae growth advantage, improves the redox situation at water-settling interface, reduces the endogenous release of phosphorus and the formation and the release of smell substance.
2. to adopt water body to add that water body pH that acid treatment causes descends be not a long term phenomenon in the present invention, when formic acid with nitrate radical is transformed, no longer during hypertrophy, the pH of water body will maintain near 7 algae.
3. the interpolation nitric acid treatment of the present invention in the settling interface of 10-50 cm, treat that nitrate radical is transformed after, do not change sedimental pH environment basically, but strengthen the settling degradation of organic matter, improve water-settling interface oxidation reduction situation.
4. the present invention adds acid treatment in water body adds acid treatment and settling, can implement according to the different steps combination of water body eutrophication degree and improvement, even, also can finish improvement in the short period of time to the very high serious rice-nutrient water body of organic content in those surface deposits.
Embodiment
Embodiment 1
In the transparent organic glass post of diameter 5 cm, high 200cm, the bottom is the Taihu Lake Mei Liangwan surface deposit of 0-20 cm, on cover the water of dark 160 cm.The pH of overlying water is 8.9, NH
4 +-N and NO
3 -The content of N, water-soluble P and COD is respectively 1.0,1.0,0.2 and 23.8 mg/L, and the concentration of chloroplast(id) a is 18.7 mg/m
3
In first group was handled, behind interpolation 1.2 mM nitric acid and the 0.3 mM formic acid, pH was less than 6.5 in overlying water;
In second group is handled, inject 1 N nitric acid at sedimental 10 cm degree of depth places, the mean concns that makes nitrate radical in the 0-20 cm settling is 30 mM;
In the 3rd group is handled, in overlying water, add outside 1.2 mM nitric acid and the 0.3 mM formic acid, also inject 1 N nitric acid at its sedimental 10 cm degree of depth places, the mean concns that makes nitrate radical in the 0-20 cm settling is 30 mM;
Nitric acid and formic acid are not added in the 4th group of processing, in contrast.
These four groups processing are at first cultivated under 6-14 degree condition, and the overlying water of the 0-140 cm degree of depth is accepted illumination 13 h every day, and intensity of illumination changes between 1400 and 800 lux from high to low.After 70 days, cultivate under 24-26 degree condition, intensity of illumination changes between 2600 and 2000 lux from high to low.After 28 days, the concentration that contrast, first, second and the 3rd group are handled green body a of water body middle period is respectively 283,37,98 and 14 mg/m
3Compare with control treatment, first, second and the 3rd group of concentration of handling green body a of water body middle period reduce by 87%, 65% and 95% respectively.
Therefore, add acid treatment in overlying water or in the settling, all effectively controlled algae grows in the water; Simultaneously in overlying water He in the settling, add acid treatment, reduce algae grows in the water more significantly.
Embodiment 2
Influence for periodically broken out by blue-green algae, water body exchange slowly, the input of external source phosphorus is effectively controlled but the with serious pollution eutrophication water of endogenous phosphorus, as seriously lose tap water water body, aquaculture water and the landscape water body of using value because of eutrophication, in water body, add the pH that nitric acid and formic acid reduce water body, the mean value of pH under illumination condition that makes water body is below 8.0, improve the redox situation at water-settling interface, reduce the generation of blue-green alga bloom and the formation and the release of smell substance; Then improve the redox situation at water body-settling interface, reduce intensity and the channel and the final blue algae bloom of eliminating of blue algae bloom.
Can be the period of adding nitric acid and formic acid to processed water body respectively:
Algal grown is low temperature season slowly, at algal grown low temperature season slowly, adds nitric acid and formic acid and makes the mean value of pH under illumination condition of water body not be higher than 8.0, and nitrate concentration is 0.25-5 mM;
Or algal grown suitable early stage, in algal grown suitable early stage, adding nitric acid and formic acid and make the mean value of pH under illumination condition of water body not be higher than 7.3, nitrate concentration is 0.25-5 mM;
Or blue algae bloom early stage or blue algae bloom period, in blue algae bloom early stage, promptly the concentration of chloroplast(id) a is at 20-50 mg/m
3Between, adding nitric acid and formic acid and make the mean value of pH under illumination condition of water body not be higher than 7.0, nitrate concentration is 0.25-5 mM;
In blue algae bloom period, promptly the concentration of chloroplast(id) a is higher than 50 mg/m
3, adding nitric acid and formic acid and make the mean value of pH under illumination condition of water body not be higher than 6.7, nitrate concentration is 0.25-5 mM.
Interpolation nitric acid and formic acid change the concentration of the pH and the nitrate radical of processed water body, and the growth vigor of reduction blue-green algae improves the redox situation at water-settling interface, strengthens the stability of surface deposit phosphorus.
Have a mind to reduce the water body rate of exchange during the improvement, according to superficial deposit Biodegradable Organic Matter Enrichment degree with add acid period, add acid treatment every year one to three time, administer cycle 1-6.In the early stage (when formic acid need use) in the cycle of improvement, in processed water body, do not throw in fish; In the later stage (when formic acid needn't use) in the cycle of improvement, throw in fish in right amount.
Embodiment 3
Influence for periodically broken out by blue-green algae, water body exchange slowly, the input of external source phosphorus is effectively controlled but the with serious pollution eutrophication water of endogenous phosphorus, as seriously lose tap water water body, aquaculture water and the landscape water body of using value because of eutrophication, in the settling interface of its 10-50 cm, add nitric acid, the nitric acid that adds in the settling improves the redox situation at water-settling interface, reduce the formation and the release of smell substance in the water body, strengthen the stability of sediment phosphorus.Then improve the redox situation at water body-settling interface, reduce the intensity of blue algae bloom and eliminate blue algae bloom.
Add the period of nitric acid in settling: the non-outburst of the blue-green algae between the spring in autumn period is good.After adding nitric acid, the mean concns of nitrate radical is 10-100 mM in the 0-50 cm settling.The nitric acid that adds makes and forms different pH microcells in the settling at the settling internal diffusion.In the suitable pH microcell of microbial activities, microbial activities is strong, accelerates degradation of organic matter, improves the redox situation at water-settling interface, strengthens the stability of surface deposit phosphorus.
For shortening the improvement cycle, particularly when degradable organic content height is very high in the surface deposit of processed water body, when in processed water body, adding nitric acid and formic acid, in the settling interface of its 10-50 cm, add nitric acid, accelerate to improve the redox situation of water-surface deposit, strengthen the stability of surface deposit phosphorus.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. method of administering body eutrophication and blue algae bloom, it is characterized in that: influence to periodically broken out by blue-green algae, water body exchange slowly, the input of external source phosphorus is effectively controlled but add nitric acid and formic acid in the with serious pollution eutrophication water of endogenous phosphorus and/or add nitric acid in the settling interface of this eutrophication water 10-50cm, improve the redox situation at water body-settling interface, reduce the content of phosphorus in the water body and the release strength of sediment phosphorus, progressively reduce intensity and the frequency and the final generation condition of eliminating blue algae bloom of blue algae bloom then.
2. by the method for described improvement body eutrophication of claim 1 and blue algae bloom, it is characterized in that: after interpolation nitric acid added in the described water body, the nitrate concentration of water body was 0.25-5mM; After adding formic acid, the formate concentration of water body is 0.3-5mM; The mol ratio of formic acid and nitric acid is 0.3-5.
3. by claim 1 or the 2 described methods of utilizing nitric acid and formic acid to administer body eutrophication, it is characterized in that: described to periodically broken out by blue-green algae to add in the eutrophication water that influences nitric acid and formic acid to be meant the period of blue algae bloom early stage or blue algae bloom;
At blue algae bloom in earlier stage, promptly the concentration of chloroplast(id) a is 20-50mg/m
3, the mean value of pH under illumination condition that interpolation nitric acid and formic acid make water body is below 7.0, and the concentration of nitrate radical is 0.25-5mM;
During blue algae bloom, promptly the concentration of chloroplast(id) a surpasses 50mg/m
3, the nitric acid of interpolation and formic acid make the mean value of pH under illumination condition of water body below 6.7, and the concentration of nitrate radical is 0.25-5mM.
4. by claim 1 or the 2 described methods of utilizing nitric acid and formic acid to administer body eutrophication, it is characterized in that: describedly be early stage to the period that periodically broken out in the eutrophication water that influences by blue-green algae to add nitric acid and formic acid at suitable blue algae growth, the mean value of pH under illumination condition that nitric acid that adds and formic acid make water body is below 7.3, and the concentration of nitrate radical is 0.25-5mM.
5. by claim 1 or the 2 described methods of utilizing nitric acid and formic acid to administer body eutrophication, it is characterized in that: described is algal grown low temperature season slowly to being subjected to blue-green algae periodically to break out the preferred period of adding nitric acid and formic acid in the eutrophication water that influences, the mean value of pH under illumination condition that nitric acid that adds and formic acid make water body is below 8.0, and the concentration of nitrate radical is 0.25-5mM.
6. by the described method of utilizing nitric acid and formic acid to administer body eutrophication of claim 1, it is characterized in that: be the non-outburst of the blue-green algae period between the spring in autumn described preferred period of adding nitric acid in the settling interface of the eutrophication water 10-50cm that periodically broken out by blue-green algae to influence, after adding nitric acid, the mean concns of nitrate radical is 10-100mM in the 10-50cm settling.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010541840 CN102001716B (en) | 2010-11-12 | 2010-11-12 | Method for controlling water eutrophication by using hydrogen nitrate and formic acid |
| PCT/CN2010/078985 WO2012062002A1 (en) | 2010-11-12 | 2010-11-23 | Method for treating eutrophic water by using nitric acid and formic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010541840 CN102001716B (en) | 2010-11-12 | 2010-11-12 | Method for controlling water eutrophication by using hydrogen nitrate and formic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102001716A CN102001716A (en) | 2011-04-06 |
| CN102001716B true CN102001716B (en) | 2013-07-24 |
Family
ID=43809466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010541840 Expired - Fee Related CN102001716B (en) | 2010-11-12 | 2010-11-12 | Method for controlling water eutrophication by using hydrogen nitrate and formic acid |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102001716B (en) |
| WO (1) | WO2012062002A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107821434B (en) * | 2017-11-28 | 2020-11-13 | 河海大学 | Preparation method of modified algicide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919746A (en) * | 2006-09-27 | 2007-02-28 | 唐宾 | Processing method for eutrophication water and box |
| CN101125705A (en) * | 2006-08-18 | 2008-02-20 | 邹宁 | Biological treatment technique for eutrophication water body |
| CN101607762A (en) * | 2009-07-09 | 2009-12-23 | 东莞圣源环保科技有限公司 | Ecological restoring method of river water body |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07163975A (en) * | 1993-12-15 | 1995-06-27 | Sumitomo Chem Co Ltd | Method for removing phosphoric acid ion in water |
| CN1765768A (en) * | 2004-10-26 | 2006-05-03 | 南京恒澜科技发展有限公司 | City inland river pollution biological purification material and device |
-
2010
- 2010-11-12 CN CN 201010541840 patent/CN102001716B/en not_active Expired - Fee Related
- 2010-11-23 WO PCT/CN2010/078985 patent/WO2012062002A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125705A (en) * | 2006-08-18 | 2008-02-20 | 邹宁 | Biological treatment technique for eutrophication water body |
| CN1919746A (en) * | 2006-09-27 | 2007-02-28 | 唐宾 | Processing method for eutrophication water and box |
| CN101607762A (en) * | 2009-07-09 | 2009-12-23 | 东莞圣源环保科技有限公司 | Ecological restoring method of river water body |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012062002A1 (en) | 2012-05-18 |
| CN102001716A (en) | 2011-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100378272C (en) | Stereo in-situ ecological urban water system repairing process | |
| Sun et al. | Nitrogen removal from polluted river by enhanced floating bed grown canna | |
| CN104743675B (en) | Depth of water regulation controls the method that submerged plant growth administers lake eutrophication | |
| CN102491522A (en) | Water eco-environment protection method based on water plant harvesting | |
| CN106754618B (en) | Enrichment culture method of anaerobic ammonium oxidation flora | |
| Jin et al. | A key cultivation technology for denitrifying granular sludge | |
| CN104152366A (en) | Plant yeast additive and preparation method thereof | |
| Sayara et al. | Evaluation of the effect of reaction time on nutrients removal from secondary effluent of wastewater: Field demonstrations using algal-bacterial photobioreactors | |
| CN109179936B (en) | In-situ treatment method suitable for ecological restoration of light-pollution clean pond | |
| KR20210105849A (en) | Yellow soil fermentation strain composition for water purification and water purification method using the same | |
| CN102001716B (en) | Method for controlling water eutrophication by using hydrogen nitrate and formic acid | |
| CN103373760B (en) | Quick start method for treating ammonia-containing wastewater by A/O process | |
| CN108849294B (en) | Method for rapidly recovering submerged plants in lake with high organic matter sediments | |
| McNair | Pilot Reactor Operation of the Oxygenic Photogranule (OPG) Wastewater Treatment Process | |
| Gennaro et al. | Reduction of land based fish-farming impact by phytotreatment pond system in a marginal lagoon area | |
| CN210150808U (en) | Black and odorous water body ecological treatment system | |
| CN103102018A (en) | Compound water ecology restoration agent | |
| CN207435252U (en) | The natural catalytic oxidation pool | |
| Ding et al. | Effects of influent algae concentrations and seasonal variations on pollutant removal performance in high-rate algae ponds. | |
| CN104897866A (en) | Purifying simulation method for heavy-eutrophic water bodies by using biomembrane meshes | |
| CN103466786B (en) | A kind of low cost removes the method for organophosphorus in sewage | |
| CN107399883A (en) | The natural catalytic oxidation pool | |
| CN104030451B (en) | A kind of method that directive breeding original inhabitants diatom is repaired water body | |
| CN108101202B (en) | Method for realizing complete short-cut nitrification in SBR reactor by using neutralizing agent | |
| CN102603062B (en) | Quick culture method for activated sludge during process of viscose waste water by SBR (Styrene Butadiene Rubber) technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20151112 |
|
| EXPY | Termination of patent right or utility model |