CN101928068A - Method of all self-oxygen ammonia nitrogen removal by particle sludge - Google Patents
Method of all self-oxygen ammonia nitrogen removal by particle sludge Download PDFInfo
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- CN101928068A CN101928068A CN2009100403656A CN200910040365A CN101928068A CN 101928068 A CN101928068 A CN 101928068A CN 2009100403656 A CN2009100403656 A CN 2009100403656A CN 200910040365 A CN200910040365 A CN 200910040365A CN 101928068 A CN101928068 A CN 101928068A
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Abstract
The invention relates to the technical field of ammonia nitrogen removal in waste water treatment, in particular to a method of all self-oxygen ammonia nitrogen removal by particle sludge. The method comprises the following steps: loading inoculated active sludge into an upflow anaerobic sludge bed reactor; pumping ammonia nitrogen waste water which does not contain organic carbon source out of the bottom of the reactor; causing the waste water to flow out of the upper part of the reactor after flowing through the sludge bed; meanwhile, adopting air aeration; after cultivating for 40-105 days, obtaining favourable all self-oxygen ammonia nitrogen particle sludge; and converting ammonia nitrogen parts into nitrogen gas, and effectively removing the nitrogen gas. The nitrogen removal particle sludge obtained by the method of the invention has good performance, can improve the volume load and operation stability of the reactor, does not need additional carbon resource, is suitable for processing waste water with high ammonia nitrogen ration and low carbon nitrogen ratio and inorganic waste water containing nitrogen.
Description
Technical field:
The present invention relates to the method and technology field of the ammonia nitrogen removal in the wastewater treatment, particularly a kind of method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal.
Background technology:
Ammonia nitrogen is one of principal pollutant of water body Eutrophication, and the removal method of ammonia nitrogen has physics method, chemical method and biological process in the waste water, and wherein biological process is as a kind of economy, denitrogenation method is widely used efficiently.
Traditional biological denitrificaion generally comprises 2 stages of nitrification and denitrification, but nitrated stage aeration power consumption is high, and consumption basicity, the denitrification stage then needs organic carbon source, to coking, petrochemical industry, percolate, the contour ammonia nitrogen of chemical fertilizer, low ratio of carbon to ammonium waste water, then need add organic carbon sources such as methyl alcohol, increase processing costs, also may cause secondary pollution.Add for solving the carbon source problem, the researchist has developed multiple entirely from the oxygen denitrification process, as aerobic nitrosated-Anammox, hydrogen from the oxygen denitrification etc.
However, that adopts in the practical engineering application at present still mainly adopts the suspension active sludge from the oxygen denitrification process entirely, causes handling that load is lower, fluctuation of service, the more high defective of investment working cost.
Summary of the invention:
The objective of the invention is provides a kind of method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal at the deficiencies in the prior art; It can solve, and the sludge concentration that exists in traditional nitrated, denitrification biological denitrogenation technology is low, denitrification process still needs problems such as additional carbon, investment working cost height, effectively reduces the pollution that nitrogen causes water body simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
1, chooses one or more upflowing aerobic sludge bed bioreactors of packing into and being furnished with triphase separator in aerobic floc sludge, anaerobism floc sludge, the anaerobic grain sludge;
2, the ammonia nitrogen waste water that will not contain organic carbon source pumps into from reactor bottom, and water intake mode is intermittent type or continous way; Reactor bottom is equipped with aeration head, adopts air aeration when waste water is flowed through reactor, and air speed is 20～60L/h, utilizes air-flow to shear generation and the growth that promotes granule sludge;
3, keep the interior temperature of reactor between 20～35 ℃, the pH value is between 6～8, dissolved oxygen is between 2～6mg/L, hydraulic detention time is 4～12 hours, training oxygen is after 40～105 days, obtain in reactor entirely from oxygen denitrogenation granule sludge, ammonia nitrogen partly is converted into nitrogen and is effectively removed in the waste water simultaneously.
Substrate in the granule sludge training oxygen process is not for containing the ammonia nitrogen waste water of organic carbon source, and total ammonia nitrogen concentration is 100～1000mg/L.
In addition, add a certain amount of NaCl, CaCl in the granule sludge training oxygen process
2, MgCl
2In inorganic salt, inorganic ion concentration is between 10～60mg/L, to promote the generation and the growth of denitrogenation granule sludge.
The granule sludge outward appearance that obtains according to the method for the invention is the tawny irregular particle, and particle diameter is 0.5～3.5mm, and density is 1.03～1.46g/cm
3Functional, can improve the volumetric loading and the operation stability of reactor.
Owing to need not additional carbon, the present invention is applicable to the processing of high ammonia nitrogen low ratio of carbon to ammonium waste water, inorganic nitrogenous effluent, in addition, has realized omnidistance from the oxygen denitrification process in a reactor, reduce system space and construction costs, also reduced operation easier and running cost.
Granule sludge has advantages such as microbial biomass height, settleability are good, anti impulsion load, can be used for removing various organism, ammonia nitrogen, phosphorus and absorption heavy metal etc.The present invention trains oxygen and goes out entirely from oxygen denitrogenation granule sludge, need not additional carbon, has improved the removal efficient of ammonia nitrogen waste water, thereby can effectively reduce the nitrogenous effluent pollution on the environment.
Embodiment:
Embodiment 1
Adopt the aerobic sludge of aeration tank, municipal sewage plant and the anaerobic sludge of concentration basin to press 5: 1 mixed of mass ratio, then mixing sludge is inoculated in the upflowing aerobic sludge bed bioreactor; Human configuration simulated wastewater ammonia nitrogen concentration is 500mg/L, adds MgCl
2Concentration is 20mg/L, reactor operating condition is: 25～35 ℃ of temperature, the pH value is between 6.2～7.8, dissolved oxygen is at 2.5～5.3mg/L, and hydraulic detention time is 6～10 hours, adopts air aeration, air speed is 20～30L/h, the aerobic denitrification particle sludge of brown is observed in steady running in reactor after 75 days, its particle diameter 0.7～1.1mm, and density is 1.01～1.28g/cm
3Simultaneously, nitrogen removal rate reaches 82% in the waste water.
Embodiment 2
Adopt the seed sludge identical with embodiment 1, human configuration simulated wastewater ammonia nitrogen concentration is 500mg/L, interpolation MgCl
2Concentration is 15mg/L, CaCl
2Concentration is 5mg/L, and the aerobic denitrification particle sludge of brown was observed in steady running in 83 days in reactor, its particle diameter 0.8～1.2mm, and density is 1.03～1.19g/cm
3, simultaneously, nitrogen removal rate reaches 85% in the waste water.
Embodiment 3
Adopt the active sludge in certain fertilizer plant's Sewage treatment systems to be inoculated in the upflowing aerobic reactor, the total nitrate concentration of human configuration simulated wastewater is 800mg/L, the reactor air speed is 30～45L/h, other conditions are identical with embodiment 1, operation is after 89 days continuously, in reactor, observe the aerobic denitrification particle sludge of brown, its particle diameter 2.2～3.2mm, density is 1.18～1.40g/cm
3, nitrogen removal rate reaches 89.5%.
Claims (5)
1. method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal, it is characterized in that: it may further comprise the steps:
(1), chooses one or more upflowing aerobic sludge bed bioreactors of packing into and being furnished with triphase separator in aerobic floc sludge, anaerobism floc sludge, the anaerobic grain sludge;
(2), the ammonia nitrogen waste water that will not contain organic carbon source pumps into from reactor bottom, ammonia nitrogen concentration is 100～1000mg/L;
(3), keep temperature in the reactor between 20～35 ℃, pH value is between 6～8, dissolved oxygen is between 2～6mg/L, hydraulic detention time is 4～12 hours, training oxygen is after 40～105 days, acquisition is entirely from oxygen denitrogenation granule sludge in reactor.
2. a kind of method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal according to claim 1 is characterized in that: the ammonia nitrogen waste water water intake mode is intermittent type or continous way.
3. a kind of method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal according to claim 1, it is characterized in that: described reactor bottom is equipped with aeration head, when flowing through reactor, adopts waste water air aeration, air speed is 20～60L/h, utilizes air-flow to shear generation and the growth that promotes granule sludge.
4. a kind of method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal according to claim 1 is characterized in that: add inorganic salt in the granule sludge training oxygen process, to promote the generation and the growth of denitrogenation granule sludge, inorganic salt are NaCl, CaCl
2, MgCl
2In one or more, total inorganic ion concentration is between 10～60mg/L.
5. a kind of method of utilizing granule sludge to carry out all self-oxygen ammonia nitrogen removal according to claim 1, it is characterized in that: the granule sludge outward appearance that is obtained is the tawny irregular particle, and particle diameter is 0.5～3.5mm, and density is 1.03～1.46g/cm
3
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| CN2009100403656A CN101928068A (en) | 2009-06-19 | 2009-06-19 | Method of all self-oxygen ammonia nitrogen removal by particle sludge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730905A (en) * | 2012-06-11 | 2012-10-17 | 西安建筑科技大学 | Method for improving ammonia-nitrogen-removing effect of active sludge |
| CN103708676A (en) * | 2013-12-13 | 2014-04-09 | 沈阳化工研究院有限公司 | Method for treating wastewater generated by natural rubber processing |
| CN104386813A (en) * | 2014-11-20 | 2015-03-04 | 沈阳建筑大学 | Method for quickly forming anaerobic-ammonia oxidation and granulation sludge |
| CN108862627A (en) * | 2018-07-05 | 2018-11-23 | 南华大学 | A kind of selenium cadmium waste water processing method of no additional carbon |
| CN112479379A (en) * | 2020-12-11 | 2021-03-12 | 江西理工大学 | Ionic type rare earth mine high ammonia nitrogen wastewater aerobic granular sludge coupling denitrification method |
-
2009
- 2009-06-19 CN CN2009100403656A patent/CN101928068A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730905A (en) * | 2012-06-11 | 2012-10-17 | 西安建筑科技大学 | Method for improving ammonia-nitrogen-removing effect of active sludge |
| CN102730905B (en) * | 2012-06-11 | 2014-03-26 | 西安建筑科技大学 | Method for improving ammonia-nitrogen-removing effect of active sludge |
| CN103708676A (en) * | 2013-12-13 | 2014-04-09 | 沈阳化工研究院有限公司 | Method for treating wastewater generated by natural rubber processing |
| CN103708676B (en) * | 2013-12-13 | 2015-06-17 | 沈阳化工研究院有限公司 | Method for treating wastewater generated by natural rubber processing |
| CN104386813A (en) * | 2014-11-20 | 2015-03-04 | 沈阳建筑大学 | Method for quickly forming anaerobic-ammonia oxidation and granulation sludge |
| CN104386813B (en) * | 2014-11-20 | 2016-01-13 | 沈阳建筑大学 | A kind of method of quick formation anaerobic ammonium oxidation granular sludge |
| CN108862627A (en) * | 2018-07-05 | 2018-11-23 | 南华大学 | A kind of selenium cadmium waste water processing method of no additional carbon |
| CN108862627B (en) * | 2018-07-05 | 2021-04-13 | 南华大学 | Selenium-cadmium wastewater treatment method without external carbon source |
| CN112479379A (en) * | 2020-12-11 | 2021-03-12 | 江西理工大学 | Ionic type rare earth mine high ammonia nitrogen wastewater aerobic granular sludge coupling denitrification method |
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Application publication date: 20101229 |