CN105502650A - Preparation method of composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water - Google Patents
Preparation method of composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water Download PDFInfo
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- CN105502650A CN105502650A CN201510859730.1A CN201510859730A CN105502650A CN 105502650 A CN105502650 A CN 105502650A CN 201510859730 A CN201510859730 A CN 201510859730A CN 105502650 A CN105502650 A CN 105502650A
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- carbon source
- solid carbon
- konjac glucomanna
- composite solid
- waste water
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Farming Of Fish And Shellfish (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a preparation method of a composite solid carbon source filling material for advanced nitrogen removal of aquaculture waste water. Adding a certain amount of litchi seed powder and sodium carbonate into an aqueous solution of glucomannan with uniformly stirring; allowing to stand at room temperature after heating in water bath; carrying out cooling and refrigeration; finally carrying out freeze drying, in order to obtain the composite solid carbon source filling material. The agriculture and forestry waste litchi seed powder which contains a large amount of starch and the natural polysaccharide substance glucomannan are used in the formula, the preparation method is simple, and the reaction condition is mild; the product can be used as a carbon source and a filling material, and can be degraded completely without environment pollution. An economic long-acting carbon source for treatment of culture waste water with nitrogen removal by biological denitrification or advanced treatment of sewage and nitrogen removal by biological denitrification of underground water is provided.
Description
Technical field
The present invention relates to a kind of preparation method of composite solid carbon source filler, be specifically related to a kind of preparation method of aquiculture waste water advanced nitrogen composite solid carbon source filler.
Background technology
In recent years, culture fishery fast development, enter in natural water body from remaining bait and the excremental nitrogenous effluent of cultivation object in a large number, these pollution substances cause water environment to worsen on the one hand, frequent occurrence, destroy the eubiosis.On the other hand, the nonionic state ammonia nitrogen be discharged in water body has direct toxicity to aquaculture organism, can affect its g and D, has serious consequences and tremendous economic loss to aquaculture.Utilizing biological process to denitrogenate is a kind of economy, effective means.
Breeding wastewater saltiness is high, carbon content is low, and nitrification-denitrification bacteria growing is slow, quantity is few; And carbon source wretched insufficiency in denitrification denitrogenation process, cause nitrate in cultivation process water to accumulate in a large number.Additional carbon is needed to provide the energy of denitrifying microorganism metabolism needs to carry out deep biological denitrogenation.At present for the additional carbon of low ratio of carbon to ammonium waste water denitrification denitrogenation, following three classes mainly can be divided into: low molecule organic matter (methyl alcohol, acetic acid etc.), glucide (glucose, sucrose etc.) and degradable high polymer material (poly butylene succinate PBS, polycaprolactone glycol PCL etc.).But methyl alcohol itself exists toxicity, ethanol, acetic acid, the wayward meeting of glucose dosage cause the COD in water outlet to increase, and cause secondary pollution, and in actual motion, the normal equipment of costliness that needs controls dosage; This type of solid carbon source use cost of degradable high polymer material is still relatively high, limits its large-scale application in breeding wastewater denitrification denitrogenation water technology.Biological material wide material sources, draw materials conveniently, with low cost and lifeless matter toxicity, comparatively suitable breeding wastewater water treatment.But there is work-ing life short, some biological material microorganism to utilize and slowly cause the deficiencies such as nitric efficiency is low.Proposing a kind of preparation method of aquiculture waste water advanced nitrogen composite solid carbon source filler for overcoming above-mentioned not enough the present invention, both as carbon source, again as filler, and the work-ing life of biological material can be improved.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of composite solid carbon source filler;
Another object of the present invention is to provide the application of solid carbon source filler in aquiculture waste water advanced nitrogen.
The technical solution used in the present invention is:
A preparation method for composite solid carbon source filler, comprises the following steps:
1) the konjac glucomanna aqueous solution is prepared;
2) Lychee Seed is added in konjac glucomanna solution mix;
3) in said mixture, add sodium carbonate, mix and obtain complex sol;
4) upper step gained complex sol room temperature is left standstill 45 ~ 75min, then process 2.5 ~ 3.5h in 85 ~ 95 DEG C of water-baths, obtain plural gel;
5) by plural gel in-80 ~-20 DEG C of freezing 10 ~ 14h, take out, namely obtain porous compounded carbons filler after lyophilize.
Further, described in step 1), the concentration of the konjac glucomanna aqueous solution is 20 ~ 30g/L.
Further, the compound method of the above-mentioned konjac glucomanna aqueous solution is: the aqueous solution adding konjac glucomanna is stirred to konjac glucomanna dissolving in 50 DEG C of waters bath with thermostatic control and is dispersed into uniform solution.
Further, step 2) mass ratio of the Lychee Seed that adds and konjac glucomanna is (1:3) ~ (7:3).
Further, step 2) in Lychee Seed add konjac glucomanna solution after need stirring 25 ~ 40min.
Further, above-mentioned Lychee Seed was that 200 orders are with the powder of top sieve.
Further, step 3) adds the quality of sodium carbonate is 10% ~ 12% of konjac glucomanna quality.
The application of composite solid carbon source filler in denitrogenation of waste water, the method that the preparation method of described composite solid carbon source filler is as described above.
Further, above-mentioned waste water is aquiculture waste water.
The invention has the beneficial effects as follows:
The agriculture and forestry organic waste material Lychee Seed containing much starch and natural polysaccharide material konjac glucomanna is have employed in formula of the present invention, through being simply uniformly mixed the freezing composite solid carbon source filler obtained containing a large amount of hole, preparation method is simple, reaction conditions is gentle, can again can as filler as carbon source, can be completely degraded, free from environmental pollution.A kind of economic carbon source can be provided for processing breeding wastewater biological denitrification denitrogenation or the advanced treatment of sewage and the denitrogenation of underground water biological denitrification.
Composite solid carbon source filler of the present invention, at 25 DEG C, be the breeding wastewater of 60 ~ 70mg/l for nitrate nitrogen concentration, 24h nitrate nitrogen clearance can reach 100%, without nitrite accumulation.Semen Litchi in the present invention and konjac glucomanna low price, convenient sources, has no side effect to aquaculture organism, is economical and practical solid carbon source.
Accompanying drawing explanation
Fig. 1 is that NO removed by embodiment 1 solid carbon source filler
3-N efficiency diagram;
Fig. 2 is NO in embodiment 1 reaction process
2-N concentration curve;
Fig. 3 is that NO removed by embodiment 2 solid carbon source filler
3-N efficiency diagram;
Fig. 4 is NO in embodiment 2 reaction process
2-N concentration curve;
To be embodiment 3 scheme containing the SEM of 50% Semen Litchi compounded carbons filler Fig. 5;
To be embodiment 4 be Fig. 6 schemes containing the SEM of 70% Semen Litchi compounded carbons filler.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further, but be not limited thereto.
embodiment 1: a kind of preparation method of composite solid carbon source filler
1) prepare the 2% konjac glucomanna aqueous solution, stir 1h dissolving in 50 DEG C of waters bath with thermostatic control and be dispersed into uniform solution;
2) up walk in gained solution and add Lychee Seed, it is 1:3 with the mass ratio of konjac glucomanna, continues stirring 30min; Wherein Lychee Seed can cross 200 mesh sieves;
3) up walk the sodium carbonate adding konjac glucomanna quality 12% in mixture, stir 10min, obtain complex sol;
4) this colloidal sol room temperature is left standstill 1h, put into 90 DEG C of water-bath constant temperature 3h, obtain plural gel;
5) plural gel is put into-20 DEG C of refrigerator freezing 12h, take out lyophilize 12h and namely obtain porous compounded carbons filler.
By the denitrification mud of taming in gained composite solid carbon source filler inoculation cultivating system, and add aquaculture wastewater, the concentration controlling active sludge is about 2.0g/L, carries out denitrification denitrogenation.Change the breeding wastewater that water continues to add equivalent every day.Reaction 17d, result as depicted in figs. 1 and 2.Fig. 1 shows, and at 25 DEG C, be the breeding wastewater of 60 ~ 70mg/l for nitrate nitrogen concentration, 24h nitrate nitrogen clearance can reach 100%.Fig. 2 is NO in reaction process
2-N concentration curve reacts, and 24h nitrite nitrogen concentration is 0.
embodiment 2: a kind of preparation method of composite solid carbon source filler
1) prepare the 2.5% konjac glucomanna aqueous solution, stir 1h dissolving in 50 DEG C of waters bath with thermostatic control and be dispersed into uniform solution;
2) adding with the mass ratio of konjac glucomanna is the Lychee Seed of 3:3, and particle diameter is 200 orders, joins in konjac glucomanna solution, continues to stir 30min;
3) add the sodium carbonate of konjac glucomanna quality 10%, stir 10min, obtain complex sol;
4) this colloidal sol room temperature is left standstill 1h, put into 90 DEG C of water-bath constant temperature 3h, obtain plural gel;
5) plural gel is put into-20 DEG C of refrigerator freezing 12h, take out lyophilize 12h and namely obtain porous compounded carbons filler.
By the denitrification mud of taming in gained solid carbon source inoculation cultivating system, and add aquaculture wastewater, the concentration controlling active sludge is about 1.5g/L, carries out denitrification denitrogenation.Change the breeding wastewater that water continues to add equivalent every day, react 25 days.
The results are shown in Figure 3 and Fig. 4, at 25 DEG C, be the breeding wastewater of 60 ~ 70mg/l for nitrate nitrogen concentration, 24h nitrate nitrogen clearance can reach 100%, demonstrate solid carbon source filler and can discharge rapidly carbon source for the utilization of denitrification denitrogenation process, 24h nitrite nitrogen concentration is 0.In the middle of 25 days of reaction, continual removal nitrate nitrogen and without nitrite accumulation.
embodiment 3: a kind of preparation method of composite solid carbon source filler
1) prepare the 3% konjac glucomanna aqueous solution, stir 1h dissolving in 50 DEG C of waters bath with thermostatic control and be dispersed into uniform solution;
2) adding with the mass ratio of konjac glucomanna is the Lychee Seed of 3:7, and particle diameter is 200 orders, joins in konjac glucomanna solution, continues to stir 30min;
3) add the sodium carbonate of konjac glucomanna quality 11%, stir 10min, obtain complex sol;
4) this colloidal sol is left standstill 1h, put into 90 DEG C of water-bath constant temperature 3h, obtain plural gel;
5) complex sol is put into-20 DEG C of refrigerator freezing 12h, take out lyophilize 12h and namely obtain porous compounded carbons filler.
By the denitrification mud of taming in gained solid carbon source inoculation cultivating system, and add aquaculture wastewater, the concentration controlling active sludge is about 1.5g/L, carries out denitrification denitrogenation.Change the breeding wastewater that water continues to add equivalent every day.Result is as follows: at 25 DEG C, is the breeding wastewater of 60 ~ 70mg/l for nitrate nitrogen concentration, and 24h nitrate nitrogen clearance can reach 99.98%, and nitrite concentration is 0.
Embodiment 3 is schemed as shown in Figure 5 containing the SEM of 50% Semen Litchi compounded carbons filler; Compounded carbons contains large number of orifices gap structure and is conducive to attached growth of microorganisms.
embodiment 4: a kind of preparation method of composite solid carbon source filler
1) prepare the 3% konjac glucomanna aqueous solution, stir 1h dissolving in 50 DEG C of waters bath with thermostatic control and be dispersed into uniform solution;
2) adding with the mass ratio of konjac glucomanna is the Lychee Seed of 3:5, and particle diameter is 200 orders, joins in konjac glucomanna solution, continues to stir 30min;
3) add the sodium carbonate of konjac glucomanna quality 12%, stir 10min, obtain complex sol;
4) this colloidal sol is left standstill 1h, put into 90 DEG C of water-bath constant temperature 3h, obtain plural gel;
5) complex sol is put into-20 DEG C of refrigerator freezing 12h, take out lyophilize 12h and namely obtain porous compounded carbons filler.
By the denitrification mud of taming in gained solid carbon source inoculation cultivating system, and add aquaculture wastewater, the concentration controlling active sludge is about 2.0g/L, carries out denitrification denitrogenation.Change the breeding wastewater that water continues to add equivalent every day.Result is as follows: at 25 DEG C, is the breeding wastewater of 60 ~ 70mg/l for nitrate nitrogen concentration, and 24h nitrate nitrogen clearance can reach 100%, and accumulates without nitrite concentration.
Embodiment 4 is that the SEM containing 70% Semen Litchi compounded carbons filler schemes as shown in Figure 6, containing abundant macroporous structure, is conducive to microorganism colonization growth.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. a preparation method for composite solid carbon source filler, is characterized in that: comprise the following steps:
1) the konjac glucomanna aqueous solution is prepared;
2) Lychee Seed is added in konjac glucomanna solution mix;
3) in said mixture, add sodium carbonate, mix and obtain complex sol;
4) upper step gained complex sol room temperature is left standstill 45 ~ 75min, then process 2.5 ~ 3.5h in 85 ~ 95 DEG C of water-baths, obtain plural gel;
5) by plural gel in-80 ~-20 DEG C of freezing 10 ~ 14h, take out, namely obtain porous compounded carbons filler after lyophilize.
2. method according to claim 1, is characterized in that: described in step 1), the concentration of the konjac glucomanna aqueous solution is 20 ~ 30g/L.
3. according to the method described in claim 2 ~ 3, it is characterized in that: the compound method of the described konjac glucomanna aqueous solution is: the aqueous solution adding konjac glucomanna is stirred to konjac glucomanna dissolving in 50 DEG C of waters bath with thermostatic control and is dispersed into uniform solution.
4. method according to claim 1, is characterized in that: step 2) mass ratio of the Lychee Seed that adds and konjac glucomanna is (1:3) ~ (7:3).
5. method according to claim 1, is characterized in that: step 2) in Lychee Seed add konjac glucomanna solution after need stirring 25 ~ 40min.
6. the method according to claim 1,4 or 5, is characterized in that: described Lychee Seed was that 200 orders are with the powder of top sieve.
7. method according to claim 1, is characterized in that: the quality that step 3) adds sodium carbonate is 10% ~ 12% of konjac glucomanna quality.
8. the application of composite solid carbon source filler in denitrogenation of waste water, the method as described in the preparation method of described composite solid carbon source filler is as arbitrary in claim 1 ~ 7.
9. application according to claim 8, is characterized in that: described waste water is aquiculture waste water.
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| CN201510859730.1A CN105502650B (en) | 2015-11-30 | 2015-11-30 | A kind of preparation method of aquiculture waste water advanced nitrogen complex solid carbon source filler |
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| CN105502650B CN105502650B (en) | 2018-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106219730A (en) * | 2016-08-31 | 2016-12-14 | 中国水产科学研究院南海水产研究所 | A kind of method of Semen Litchi resource application |
| CN111517463A (en) * | 2020-05-08 | 2020-08-11 | 绵津环保科技(上海)有限公司 | Preparation method of sewage biological denitrification composite carbon source |
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2015
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| JP2005074263A (en) * | 2003-08-29 | 2005-03-24 | Kubota Corp | Organic waste water treatment method |
| CN1583838A (en) * | 2004-06-02 | 2005-02-23 | 武汉大学 | Preparing method for macroporous konjaku gel |
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Cited By (3)
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| CN106219730A (en) * | 2016-08-31 | 2016-12-14 | 中国水产科学研究院南海水产研究所 | A kind of method of Semen Litchi resource application |
| CN106219730B (en) * | 2016-08-31 | 2019-06-25 | 中国水产科学研究院南海水产研究所 | A kind of method of semen litchi recycling application |
| CN111517463A (en) * | 2020-05-08 | 2020-08-11 | 绵津环保科技(上海)有限公司 | Preparation method of sewage biological denitrification composite carbon source |
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