CN104003519A - Method for preparing nitrogen nutritive salt by using nitrogenous wastewater - Google Patents
Method for preparing nitrogen nutritive salt by using nitrogenous wastewater Download PDFInfo
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- CN104003519A CN104003519A CN201410233010.XA CN201410233010A CN104003519A CN 104003519 A CN104003519 A CN 104003519A CN 201410233010 A CN201410233010 A CN 201410233010A CN 104003519 A CN104003519 A CN 104003519A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a method for preparing a nitrogen nutritive salt by using a nitrogenous wastewater. The method comprises the following steps: carrying out biochemical degradation on organic matters by combined action of microorganisms of fermentation bacteria, methane bacteria and the like under a certain reaction condition; carrying out real-time control on a reaction environment condition by a data communication system (DCS) system or a programmable logic controller (PLC) system, and promoting the synergistic effect between microbial flora; degrading organic matters in the organic wastewater into CH4 and CO2, and recycling as an energy gas, converting organic nitrogen into an ammonium salt, and replacing urea with the prepared nitrogen nutritive salt product as a nitrogen nutrition source required in sewage treatment. Compared with the urea, the cost of the produced nitrogen nutritive salt is reduced by about 50%. The problem of environmental pollution caused by the nitrogenous wastewater is solved, significant economic benefits are also brought about, and the method is an environmentally friendly, resource-saving and waste recycling modern industrial technology, and has high economic and social benefits on wastewater resource development in China.
Description
Technical field
The present invention relates to waste water reclamation and utilize field, specifically a kind of method of producing nitrogen nutrition salt with nitrogenous effluent.
Background technology
In sewage treatment process, extremely low because of nitrogen content in the sewage of some industry, can not meet the demand of Microbial Communities in Activated Sludge to nitrogen nutrition source, conventionally by adding urea, supply with nitrogenous source, and in the waste water of some industry, containing a large amount of ammonia nitrogens, the cost that need to cost a lot of money, by ammonia nitrogen removal, therefore just need to be developed by anaerobic biological treatment technology, organic nitrogen in waste water is converted into ammonium salt, substitutes urea as nitrogen nutrition salt required in sewage disposal.
Summary of the invention
What the object of the present invention is to provide a kind of waste water reclamation utilization produces the method for nitrogen nutrition salt with nitrogenous effluent, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A method of producing nitrogen nutrition salt with nitrogenous effluent, concrete steps are as follows: (1) is sent into nitrogenous organic waste water in equalizing tank, add metal-salt, trace element, yeast to leach cream, vitamin H, VITAMIN and promotor and modulate in equalizing tank; (2) liquid after regulating is sent into anaerobic digestion reaction vessel and carry out fermentative degradation and methanation, temperature is controlled at 10～55 ℃, and pH value is controlled at 5～9, and the oxidation reduction potential control in fermentative degradation stage Anaerobic digestion reactor is at+400～-400mV; (3) methane is bled and is stored as the renewable energy resources and recycle; (4) then the mixture in anaerobic digester is precipitated and filtered; (5) to the nitrogenous effluent after filtering, add catalyst Fe SO
4to prepare ammonium salt, the mud obtaining after filtration carries out mummification to recycle.
As the further scheme of the present invention: the metal-salt in step (1) comprises sylvite, sodium salt, calcium salt and magnesium salts, and trace element comprises nickel element, ferro element, cobalt element and molybdenum element.
As the present invention's scheme further: in step (2), temperature and the pH of anaerobic digestion reaction vessel carry out real-time online regulation and control by DCS or PLC Controlling System.
Compared with prior art, the invention has the beneficial effects as follows: to nitrogenous effluent treatment, find out a new outlet, utilize nitrogenous effluent for raw material, the nitrogen nutrition product salt of producing, capable of circulation for sewage disposal, promote the improvement of sewage, the nitrogen nutrition salt of output is compared cost 50% left and right with urea, this technology had both solved the problem of nitrogenous effluent environmental pollution, bring again significant economic benefit, a kind of environmentally friendly, resource-conserving, changing waste into resources utilizes type modern industrial technology, for China's sewage recycling development, there is very high economic and social profit.
Accompanying drawing explanation
Fig. 1 is for producing the schematic diagram of the method for nitrogen nutrition salt with nitrogenous effluent.
Fig. 2 is for producing the process flow sheet in the method for nitrogen nutrition salt with nitrogenous effluent.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1～2, in the embodiment of the present invention, a kind of method of producing nitrogen nutrition salt with nitrogenous effluent, concrete steps are as follows:
(1) nitrogenous organic waste water is sent in equalizing tank, in equalizing tank, add metal-salt, trace element, yeast to leach cream, vitamin H, VITAMIN and promotor and modulate, to guarantee the optimal growth condition in anaerobic digestion reaction vessel, metal-salt comprises sylvite, sodium salt, calcium salt and magnesium salts, and trace element comprises nickel element, ferro element, cobalt element and molybdenum element;
(2) liquid after regulating is sent into the anaerobic digestion reaction vessel generation lipid acid that ferment, the organic substances such as alcohols, then with hydrogen-producing acetogens, degrade and generate acetic acid, carbonic acid gas and water, with methanogen, under the condition of anaerobic, carry out again methanation and generate methane and carbon dioxide, temperature is controlled at 10～55 ℃, pH value is controlled at 5～9, oxidation reduction potential control in fermentative degradation stage Anaerobic digestion reactor is at+400～-400mV, the temperature of anaerobic digestion reaction vessel and pH carry out real-time online regulation and control by DCS or PLC Controlling System, maintain the total alkalinity >200mg/L of reactive system, guarantee that anaerobic system has certain surge capability,
(3) methane is bled and is stored as the renewable energy resources and recycle;
(4) then the mixture in anaerobic digester is precipitated and filtered;
(5) to the nitrogenous effluent after filtering, add catalyst Fe SO
4aminate is converted into the ammonium salt that microorganism can directly utilize, and to prepare nitrogen nutrition salt, the mud obtaining after filtration carries out mummification to recycle.
In order to strengthen the control of reaction conditions, before coming into operation, nitrogenous effluent to detect nutrition and inhibitor contents in waste water, prevent from lacking or inhibitor contents is high that reactive system is caused to serious restraining effect because of nutritive substance.
The main performance index that the concentration of the nitrogen nutrition salt of producing and ability to function are product, after testing [NH in product
3-N]
+total content is not less than 10%, adds NaOH in product, adjusts pH=12, after employing stripping ammonia, detects chemical oxygen demand COD index, and COD<60mg/L, illustrates that in organic nitrogen-containing waste water, most of organism is degraded.
Add after this nitrogen nutrition salt, by known to the detection of Inlet and outlet water water quality, add rear device stable, the clearance of pollutent is improved, effluent quality is up to standard.The concrete data that detect see the following form:
The table 1 biochemical Inlet and outlet water COD value (mean value) of nitrogen nutrition salt that comes into operation
The table 2 nitrogen nutrition salt biochemical sludge proterties data (mean value) that come into operation
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other specific form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
Claims (3)
1. a method of producing nitrogen nutrition salt with nitrogenous effluent, it is characterized in that, concrete steps are as follows: (1) is sent into nitrogenous organic waste water in equalizing tank, add metal-salt, trace element, yeast to leach cream, vitamin H, VITAMIN and promotor and modulate in equalizing tank; (2) liquid after regulating is sent into anaerobic digestion reaction vessel and carry out fermentative degradation and methanation, temperature is controlled at 10～55 ℃, and pH value is controlled at 5～9, and the oxidation reduction potential control in fermentative degradation stage Anaerobic digestion reactor is at+400～-400mV; (3) methane is bled and is stored as the renewable energy resources and recycle; (4) then the mixture in anaerobic digester is precipitated and filtered; (5) to the nitrogenous effluent after filtering, add catalyst Fe SO
4to prepare ammonium salt, the mud obtaining after filtration carries out mummification to recycle.
2. the method for producing nitrogen nutrition salt with nitrogenous effluent according to claim 1, is characterized in that, the metal-salt in step (1) comprises sylvite, sodium salt, calcium salt and magnesium salts, and trace element comprises nickel element, ferro element, cobalt element and molybdenum element.
3. the method for producing nitrogen nutrition salt with nitrogenous effluent according to claim 1, is characterized in that, in step (2), temperature and the pH of anaerobic digestion reaction vessel carry out real-time online regulation and control by DCS or PLC Controlling System.
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| CN201410233010.XA CN104003519B (en) | 2014-05-28 | 2014-05-28 | A kind of nitrogenous effluent produces the method for nitrogen nutrition salt |
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| CN104003519B CN104003519B (en) | 2016-04-13 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219929A (en) * | 2016-08-26 | 2016-12-14 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing selenium |
| CN106219928A (en) * | 2016-08-26 | 2016-12-14 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing cobalt |
| CN106219925A (en) * | 2016-08-26 | 2016-12-14 | 北海运龙环保材料有限责任公司 | Special dose of a kind of nickeliferous anaerobic tank |
| CN106242219A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of the anaerobic tank of a kind of boracic |
| CN106242217A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing zinc |
| CN106242220A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing magnesium |
| CN106242218A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing molybdenum |
| CN106277681A (en) * | 2016-08-26 | 2017-01-04 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing manganese dioxide |
| CN106277680A (en) * | 2016-08-26 | 2017-01-04 | 北海运龙环保材料有限责任公司 | Special dose of the anaerobic tank of a kind of cupric |
| CN106348555A (en) * | 2016-08-26 | 2017-01-25 | 北海运龙环保材料有限责任公司 | Iron-containing dedicated agent for septic tank |
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| WO2007093877A2 (en) * | 2006-02-13 | 2007-08-23 | Nagarjuna Energy Private Limited | Process for over-production of hydrogen |
| CN101058463A (en) * | 2007-04-12 | 2007-10-24 | 重庆大学 | Waste water biological treatment method for realizing anaerobic ammoxidation and methanation denitrification coupling |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219929A (en) * | 2016-08-26 | 2016-12-14 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing selenium |
| CN106219928A (en) * | 2016-08-26 | 2016-12-14 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing cobalt |
| CN106219925A (en) * | 2016-08-26 | 2016-12-14 | 北海运龙环保材料有限责任公司 | Special dose of a kind of nickeliferous anaerobic tank |
| CN106242219A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of the anaerobic tank of a kind of boracic |
| CN106242217A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing zinc |
| CN106242220A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing magnesium |
| CN106242218A (en) * | 2016-08-26 | 2016-12-21 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing molybdenum |
| CN106277681A (en) * | 2016-08-26 | 2017-01-04 | 北海运龙环保材料有限责任公司 | Special dose of a kind of anaerobic tank containing manganese dioxide |
| CN106277680A (en) * | 2016-08-26 | 2017-01-04 | 北海运龙环保材料有限责任公司 | Special dose of the anaerobic tank of a kind of cupric |
| CN106348555A (en) * | 2016-08-26 | 2017-01-25 | 北海运龙环保材料有限责任公司 | Iron-containing dedicated agent for septic tank |
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| CN104003519B (en) | 2016-04-13 |
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