CN102527360B - Biological regeneration method for phosphorus adsorbent - Google Patents
Biological regeneration method for phosphorus adsorbent Download PDFInfo
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- CN102527360B CN102527360B CN 201110412899 CN201110412899A CN102527360B CN 102527360 B CN102527360 B CN 102527360B CN 201110412899 CN201110412899 CN 201110412899 CN 201110412899 A CN201110412899 A CN 201110412899A CN 102527360 B CN102527360 B CN 102527360B
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Abstract
The invention relates to a biological regeneration method for a phosphorus adsorbent. The method comprises the following steps of: (1) performing preliminary distilled water dilution; (2) biologically regenerating the phosphorus adsorbent, namely inoculating the phosphorus adsorbent subjected to preliminary distilled water dilution with biological regeneration inoculant, adding normal saline, adjusting the pH value to be 7.3, and performing biological regeneration reaction for 5 to 6 days under the condition of 30 DEG C; (3) performing secondary distilled water dilution, namely performing water bath on the biologically regenerated phosphorus adsorbent under the condition of 100 DEG C, and diluting for 2 to 3 times by distilled water; and (4) drying, namely putting the phosphorus adsorbent subjected to secondary distilled water dilution into a drying box, drying and thus obtaining the regenerated phosphorus adsorbent. According to the method, the problem of low adsorption performance caused by saturated phosphorus adsorption can be solved; furthermore, the biological regeneration method is easy to operate, and the structure of the adsorbent is not influenced; moreover, the diluted phosphorus can be used as a compound fertilizer or a liquid fertilizer; and substances harmful to the environment cannot be produced during biological regeneration.
Description
Technical field
The present invention relates to biological technical field, be specifically related to a kind of bio-regeneration method of phosphorus adsorbent.
Background technology
Phosphorus is human and animals and plants vital movement indispensable element, when phosphorus concentration in the environment water during above 0.02mg/L, just may cause body eutrophication, algae proliferation occurs and makes water quality deterioration, degradation phenomenon under the transparency.Simultaneously phosphorus is again a kind of non-renewable and face exhausted important natural resources.Therefore, it is the important problem in science that current resource environment field faces that waste water dephosphorization and phosphorus reclaim research, is subjected to extensive concern.Wherein adsorption technology is a kind of technology preferably for the trace amounts of phosphorus that processing is dissolved in the water body, yet that in a single day adsorbent adsorbs is saturated, and its suction-operated to phosphorus will weaken greatly, have a strong impact on the removal to phosphorus in the polluted-water.If the method that adopts other chemical agent to resolve may cause secondary pollution on the one hand, can cause sorbent structure to change problems such as the degeneration of absorption property on the other hand.
Summary of the invention
The objective of the invention is the deficiency for solving the problems of the technologies described above, a kind of bio-regeneration method of phosphorus adsorbent is provided, this method is simple to operate, adopts eco-friendly bio-regeneration technology not have the secondary pollution problem simultaneously.
The present invention is the deficiency that solves the problems of the technologies described above, and the technical scheme that adopts is: a kind of bio-regeneration method of phosphorus adsorbent said method comprising the steps of:
(1), single flash water elution: will adsorb the phosphorus adsorbent of phosphorus, and 100 ℃ of following water-baths 10 minutes, use the distilled water wash-out then 1～2 time;
(2), phosphorus adsorbent bio-regeneration: the phosphorus adsorbent inoculation bio-regeneration microbial inoculum of the single flash water elution of learning from else's experience, add physiological saline then, adjusting the pH value is 7.3, the bio-regeneration reaction is 5～6 days under 30 ℃ of conditions, wherein the access amount of bio-regeneration microbial inoculum is 5%～10% of phosphorus adsorbent amount, and the addition of physiological saline is: per 1 kg phosphorus adsorbent adds 0.5～1L physiological saline;
Described bio-regeneration microbial inoculum is that Bacillus cercus is cultivated the microbial inoculum that obtains in basal medium;
Each component of described basal medium is formulated in following ratio: glucose 10 g, ammonium sulfate 0.5 g, sodium chloride 0.3 g, potassium chloride 0.3 g, ferrous sulfate heptahydrate 0.03 g, four water magnesium sulfates, 0.03 g, yeast extract 0.4 g, epsom salt 0.3 g, distilled water 1L;
(3), second distillation water elution: the phosphorus adsorbent behind the bio-regeneration 100 ℃ of following water-baths 10 minutes, is used the distilled water wash-out 2～3 times then;
(4), the dry processing: the phosphorus adsorbent through the second distillation water elution is put into drying box, temperature: 105 ℃, wind speed: 2 m/s, drying was handled 3～5 hours, the phosphorus adsorbent that obtains regenerating.
Described phosphorus adsorbent is coal type active carbon or flyash.
The invention has the beneficial effects as follows:
(1), the present invention can solve the saturated problem that its adsorption capacity is reduced of phosphorus absorption, and this technology adopts the method for bio-regeneration, and is simple to operate, do not influence sorbent structure.
(2), the present invention is distilled water elution processes and bio-regeneration technology reasonable combination, makes the regeneration effect of phosphorus adsorbent better.
(3), the phosphorus of wash-out can be used as compound fertilizer or liquid fertilizer phosphorus raw material uses in the phosphorus adsorbent bio-regeneration method of the present invention, and can not produce environmentally harmful material in the process.
The specific embodiment
Embodiment 1
Be 2.5～3.0mg/L to phosphorus concentration, COD concentration is 50～70mg/L, and SS concentration is that the sewage of 20～35 mg/L carries out adsorbent---the coal type active carbon of phosphorus absorption after saturated, carries out bio-regeneration, may further comprise the steps:
(1), single flash water elution: get the coal type active carbon phosphorus adsorbent 1Kg that has adsorbed phosphorus, 100 ℃ of following water-baths 10 minutes, use the distilled water wash-out then 2 times;
(2), phosphorus adsorbent bio-regeneration: the coal type active carbon phosphorus adsorbent inoculation bio-regeneration microbial inoculum behind wash-out, the access amount of bio-regeneration microbial inoculum is 0.1Kg, the physiological saline that adds 0.5L then, the normal octane that can also add 0.2～0.6 times of physiological saline volume, can improve the effect of bio-regeneration, present embodiment adds the normal octane of 0.3L, after adding finishes, evenly mixing and adjust the pH value is 7.3, and the bio-regeneration reaction is 5 days under 30 ℃ of conditions;
The bio-regeneration microbial inoculum is the microbial inoculum that Bacillus cercus obtains by normally used cultural method in basal medium, Bacillus cercus wherein is concrete be a kind of be disclosed a kind of Bacillus cercus " No. 1, new phosphorus " in the patent of CN 1624110A at publication number, this bacterial classification is in China Committee for Culture Collection of Microorganisms's common micro-organisms center preservation, and preserving number is CGMCC1132;
Each component of basal medium is formulated in following ratio: glucose 10 g, ammonium sulfate 0.5 g, sodium chloride 0.3 g, potassium chloride 0.3 g, ferrous sulfate heptahydrate 0.03 g, four water magnesium sulfates, 0.03 g, yeast extract 0.4 g, epsom salt 0.3 g, distilled water 1L;
(3), second distillation water elution: with 100 ℃ of water-baths of adsorbent behind the biological dephosphorization 10 minutes, use the distilled water wash-out then 2 times;
(4), dry, calcination process: the phosphorus adsorbent through the second distillation water elution is put into hot air drier, temperature: 105 ℃, wind speed: 2 m/s, carry out the dry phosphorus adsorbent that obtained regenerating in 3 hours of handling.
Contrast is directly with distilled water elution process and bio-regeneration method, and directly the power of regeneration of distilled water wash-out adsorbent recovers original 20.3%, through the eluting power recovery of the adsorbent of bio-regeneration original 90.6%.
Embodiment 2
Enforcement is 50～80 mg/L to phosphorus concentration, and COD concentration is 200～300 mg/L, and SS concentration is that the sewage of 45～50 mg/L carries out phosphorus absorption adsorbent---the flyash after saturated, carries out bio-regeneration, may further comprise the steps:
(1), single flash water elution: get the coal type active carbon phosphorus adsorbent 0.5Kg that has adsorbed phosphorus, 100 ℃ of water-baths 10 minutes are used the distilled water wash-out 1 time then;
(2), phosphorus adsorbent bio-regeneration: the coal type active carbon phosphorus adsorbent inoculation bio-regeneration microbial inoculum behind wash-out, the access amount of bio-regeneration microbial inoculum is 0.25Kg, the physiological saline that adds 0.5L then, the normal octane that can also add 0.2～0.6 times of physiological saline volume, can improve the effect of bio-regeneration, present embodiment adds the normal octane of 0.15L, after adding finishes, evenly mixing and adjust the pH value is 7.3, and the bio-regeneration reaction is 6 days under 30 ℃ of conditions;
The bio-regeneration microbial inoculum is that Bacillus cercus is cultivated the microbial inoculum that obtains in basal medium;
It is a kind of that concrete is is disclosed a kind of Bacillus cercus " No. 1, new phosphorus " in the patent of CN 1624110A at publication number, and this bacterial classification is in China Committee for Culture Collection of Microorganisms's common micro-organisms center preservation, and preserving number is CGMCC1132;
Each component of basal medium is formulated in following ratio: glucose 10 g, ammonium sulfate 0.5 g, sodium chloride 0.3 g, potassium chloride 0.3 g, ferrous sulfate heptahydrate 0.03 g, four water magnesium sulfates, 0.03 g, yeast extract 0.4 g, epsom salt 0.3 g, distilled water 1L;
(3), second distillation water elution: with 100 ℃ of water-baths of adsorbent behind the biological dephosphorization 10 minutes, use the distilled water wash-out then 3 times;
(4), dry, calcination process: the phosphorus adsorbent through the second distillation water elution is put into hot air drier, temperature: 105 ℃, wind speed: 2 m/s, carry out the dry phosphorus adsorbent that obtained regenerating in 5 hours of handling.
Contrast is directly with distilled water elution process and bio-regeneration method, and directly the power of regeneration of distilled water wash-out adsorbent recovers original 15.7%, through the eluting power recovery of the adsorbent of bio-regeneration original 85.4%.
Claims (1)
1. the bio-regeneration method of a phosphorus adsorbent is characterized in that: said method comprising the steps of:
(1), single flash water elution: will adsorb the phosphorus adsorbent of phosphorus, and 100 ℃ of following water-baths 10 minutes, use the distilled water wash-out then 1～2 time;
(2), phosphorus adsorbent bio-regeneration: the phosphorus adsorbent inoculation bio-regeneration microbial inoculum of the single flash water elution of learning from else's experience, add physiological saline then, adjusting the pH value is 7.3, the bio-regeneration reaction is 5～6 days under 30 ℃ of conditions, wherein the access amount of bio-regeneration microbial inoculum is 5%～10% of phosphorus adsorbent weight, and the addition of physiological saline is: per 1 kg phosphorus adsorbent adds 0.5～1L physiological saline;
Described bio-regeneration microbial inoculum is that Bacillus cercus is cultivated the microbial inoculum that obtains in basal medium;
Each component of described basal medium is formulated in following ratio: glucose 10 g, ammonium sulfate 0.5 g, sodium chloride 0.3 g, potassium chloride 0.3 g, ferrous sulfate heptahydrate 0.03 g, four water magnesium sulfates, 0.03 g, yeast extract 0.4 g, epsom salt 0.3 g, distilled water 1L;
(3), second distillation water elution: the phosphorus adsorbent behind the bio-regeneration 100 ℃ of following water-baths 10 minutes, is used the distilled water wash-out 2～3 times then;
(4), the dry processing: the phosphorus adsorbent through the second distillation water elution is put into drying box, temperature: 105 ℃, wind speed: 2 m/s, dryly handled the phosphorus adsorbent that obtains regenerating 3～5 hours;
Described phosphorus adsorbent is coal type active carbon or flyash.
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| CN 201110412899 CN102527360B (en) | 2011-12-13 | 2011-12-13 | Biological regeneration method for phosphorus adsorbent |
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| CN 201110412899 CN102527360B (en) | 2011-12-13 | 2011-12-13 | Biological regeneration method for phosphorus adsorbent |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778465A (en) * | 2004-11-17 | 2006-05-31 | 中国科学院过程工程研究所 | Regeneration of desulfurizing adsorbent |
| CN102008936A (en) * | 2010-12-25 | 2011-04-13 | 河南科技大学 | Method for preparing phosphorus adsorbing material from fly ash |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1778465A (en) * | 2004-11-17 | 2006-05-31 | 中国科学院过程工程研究所 | Regeneration of desulfurizing adsorbent |
| CN102008936A (en) * | 2010-12-25 | 2011-04-13 | 河南科技大学 | Method for preparing phosphorus adsorbing material from fly ash |
Non-Patent Citations (2)
| Title |
|---|
| 李彬等.除磷稀土吸附剂的再生实验研究.《昆明理工大学学报(理工版)》.2005,第30卷(第04期),88-91. |
| 除磷稀土吸附剂的再生实验研究;李彬等;《昆明理工大学学报(理工版)》;20050831;第30卷(第04期);88-91 * |
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