CN104003519B - A kind of nitrogenous effluent produces the method for nitrogen nutrition salt - Google Patents

A kind of nitrogenous effluent produces the method for nitrogen nutrition salt Download PDF

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Publication number
CN104003519B
CN104003519B CN201410233010.XA CN201410233010A CN104003519B CN 104003519 B CN104003519 B CN 104003519B CN 201410233010 A CN201410233010 A CN 201410233010A CN 104003519 B CN104003519 B CN 104003519B
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China
Prior art keywords
salt
nitrogen nutrition
nitrogenous effluent
nitrogen
nitrogenous
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CN201410233010.XA
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Chinese (zh)
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CN104003519A (en
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曾群
谢文杰
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杭州拓瑞博科技有限公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a kind of method that nitrogenous effluent produces nitrogen nutrition salt, under certain reaction conditions, by the acting in conjunction of fermenting bacteria and methanobacteria etc. microorganism, biochemical degradation is carried out to organism, by DCS system or PLC system, reaction environment condition is controlled in real time, promoting the synergy between microorganism species, is CH by the organic matter degradation in organic waste water 4and CO 2and recycle as energy gas, organic nitrogen is converted into ammonium salt, the nitrogen nutrition product salt produced can substitute urea as nitrogen nutrition source required in sewage disposal, nitrogen nutrition salt cost compared with urea of output reduces about 50%, both the problem of nitrogenous effluent environmental pollution had been solved, bring again significant economic benefit, be that one is environmentally friendly, resource-conserving, changing waste into resources utilize type modern industrial technology, for China's sewage recycling development, there is very high economic and social profit.

Description

A kind of nitrogenous effluent produces the method for nitrogen nutrition salt
Technical field
The present invention relates to waste water reclamation and utilize field, specifically a kind of nitrogenous effluent produces the method for nitrogen nutrition salt.
Background technology
In sewage treatment process, because nitrogen content is extremely low in the sewage of some industry, the demand of Microbial Communities in Activated Sludge to nitrogen nutrition source can not be met, usually nitrogenous source is supplied by adding urea, and containing a large amount of ammonia nitrogen in the waste water of some industry, need to cost a lot of money cost by ammonia nitrogen removal, therefore just need to develop by anaerobic biochemical 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
A kind of method producing nitrogen nutrition salt with nitrogenous effluent that the object of the present invention is to provide waste water reclamation to utilize, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of nitrogenous effluent produces the method for nitrogen nutrition salt, concrete steps are as follows: nitrogenous organic waste water is sent in equalizing tank by (1), add metal-salt, trace element, yeast leaching cream, vitamin H, VITAMIN and promotor and modulate in equalizing tank; (2) liquid after adjustment is sent into anaerobic digestion reaction vessel and carry out fermentative degradation and methanation, temperature controls at 10 ~ 55 DEG C, and pH value controls 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 and recycles as the renewable energy resources; (4) then the mixture in anaerobic digester is carried out precipitating and filtering; (5) catalyst Fe SO is added to the nitrogenous effluent after filtration 4to prepare ammonium salt, the mud obtained 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 further scheme: temperature and the pH of the middle anaerobic digestion reaction vessel of step (2) carry out real-time online regulation and control by DCS or PLC control system.
Compared with prior art, the invention has the beneficial effects as follows: find out a new outlet to nitrogenous effluent treatment, utilize nitrogenous effluent for raw material, the nitrogen nutrition product salt produced, capable of circulation in sewage disposal, promote the improvement of sewage, nitrogen nutrition salt cost compared with urea of output reduces about 50%, 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 the schematic diagram of the method producing nitrogen nutrition salt with nitrogenous effluent.
Fig. 2 is the process flow sheet produced with nitrogenous effluent in the method for nitrogen nutrition salt.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, 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.
Refer to Fig. 1 ~ 2, in the embodiment of the present invention, a kind of nitrogenous effluent produces the method for nitrogen nutrition salt, and concrete steps are as follows:
(1) nitrogenous organic waste water is sent in equalizing tank, in equalizing tank, add metal-salt, trace element, yeast leaching cream, vitamin H, VITAMIN and promotor modulate, to ensure 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 adjustment is sent into anaerobic digestion reaction vessel and carry out fermentation generation lipid acid, the organic substances such as alcohols, then carry out degraded with hydrogen-producing acetogens and generate acetic acid, carbonic acid gas and water, carry out methanation in the absence of oxygen with methanogen again and generate methane and carbon dioxide, temperature controls at 10 ~ 55 DEG C, pH value controls 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 control system, maintain the total alkalinity >200mg/L of reactive system, ensure that anaerobic system has certain surge capability,
(3) methane is bled and is stored and recycles as the renewable energy resources;
(4) then the mixture in anaerobic digester is carried out precipitating and filtering;
(5) catalyst Fe SO is added to the nitrogenous effluent after filtration 4aminate is converted into the ammonium salt that microorganism can directly utilize, to prepare nitrogen nutrition salt, the mud obtained after filtration carries out mummification to recycle.
In order to strengthen the control of reaction conditions, the nutrition in waste water and inhibitor contents to be detected before nitrogenous effluent comes into operation, preventing from lacking because of nutritive substance or inhibitor contents is high causes serious restraining effect to reactive system.
The concentration of the nitrogen nutrition salt produced and ability to function are the main performance index of product, after testing [NH in product 3-N] +total content is not less than 10%, adds NaOH in product, and adjustment pH=12, detects chemical oxygen demand COD index, COD<60mg/L after adopting stripping ammonia, then illustrate that in organic nitrogen-containing waste water, most of organism is degraded.
After adding this nitrogen nutrition salt, by known to the detection of Inlet and outlet water water quality, add rear plant running and stablize, improve the clearance of pollutent, effluent quality is up to standard.Concrete detection data see the following form:
Table 1 comes into operation biochemical Inlet and outlet water COD value (mean value) of nitrogen nutrition salt
Table 2 comes into operation nitrogen nutrition salt biochemical sludge trait data (mean value)
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.Any Reference numeral in claim should be considered as the claim involved by limiting.

Claims (3)

1. produce the method for nitrogen nutrition salt with nitrogenous effluent for one kind, it is characterized in that, concrete steps are as follows: nitrogenous organic waste water is sent in equalizing tank by (1), add metal-salt, trace element, yeast leaching cream, vitamin H, VITAMIN and promotor and modulate in equalizing tank; (2) liquid after adjustment is sent into anaerobic digestion reaction vessel and carry out fermentative degradation and methanation, temperature controls at 10 ~ 55 DEG C, and pH value controls 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 and recycles as the renewable energy resources; (4) then the mixture in anaerobic digester is carried out precipitating and filtering; (5) catalyst Fe SO is added to the nitrogenous effluent after filtration 4to prepare ammonium salt, the mud obtained after filtration carries out mummification to recycle.
2. nitrogenous effluent according to claim 1 produces the method for nitrogen nutrition salt, it 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. nitrogenous effluent according to claim 1 produces the method for nitrogen nutrition salt, it is characterized in that, temperature and the pH of the middle anaerobic digestion reaction vessel of step (2) carry out real-time online regulation and control by DCS or PLC control system.
CN201410233010.XA 2014-05-28 2014-05-28 A kind of nitrogenous effluent produces the method for nitrogen nutrition salt CN104003519B (en)

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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
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
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
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
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
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
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
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
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

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CN101643271A (en) * 2009-08-28 2010-02-10 华南理工大学 High-efficiency biological denitrification method for waste water
CN103288303A (en) * 2013-06-27 2013-09-11 波鹰(厦门)科技有限公司 Livestock/poultry breeding wastewater resource utilization and regeneration recycling method
CN103402926A (en) * 2010-04-21 2013-11-20 西门子私人有限公司 Methods and systems for treating wastewater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101643271A (en) * 2009-08-28 2010-02-10 华南理工大学 High-efficiency biological denitrification method for waste water
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