CN101928067B - Culture method of aerobic denitrification particle sludge - Google Patents
Culture method of aerobic denitrification particle sludge Download PDFInfo
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- CN101928067B CN101928067B CN2009100403641A CN200910040364A CN101928067B CN 101928067 B CN101928067 B CN 101928067B CN 2009100403641 A CN2009100403641 A CN 2009100403641A CN 200910040364 A CN200910040364 A CN 200910040364A CN 101928067 B CN101928067 B CN 101928067B
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Abstract
The invention relates to the technical field of a culture method of particle sludge in a biological treatment technology of waste water, in particular to a culture method of aerobic denitrification particle sludge. The method comprises the following steps: putting inoculated activated sludge into an upflow-type aerobic sludge bed reactor; pumping in waste water containing nitrite and nitrate and organic matters from the bottom of the reactor; ensuring that the waste water flows out of the upper part of the reactor after passing through the reactor; and meanwhile, adopting air aeration, obtaining favourable aerobic denitrification particle sludge after the materials are cultured for 35-120 days. The aerobic denitrification particle sludge obtained by the method has good performance, and the volume loading, the removal efficiency and the operation stability of the reactor can be improved.
Description
Technical field:
The present invention relates to the cultural method technical field of the granule sludge in the biological wastewater treatment technology, particularly a kind of cultural method of aerobic denitrification particle sludge.
Background technology:
In recent years, water pollutes serious day by day, too much nitrogen-containing pollutant and gets into natural water body, not only makes quality of water environment worsen, and influences the development of fishery, tourism, aquaculture, but also the existence of HUMAN HEALTH and animal and plant is brought serious harm.Each state has all launched the research to wastewater treatment, wherein, utilize biotechnology to handle waste water and more and more receive people's attention, and the wastewater biological denitrificaion technology has caused the common concern of countries in the world.
The traditional biological denitride technology comprises aerobic nitrification and two processes of anaerobic denitrifying, has following drawback: aeration tank, investment and working cost that technical process is long, needs are bigger are high; If will keep higher biological concentration and good denitrification effect, must carry out mud and nitrification liquid simultaneously and reflux; System's impact resistance a little less than, high density contains NH
4+And NO
2-Waste water can suppress nitrobacteria growth; The acidity that produces in the nitrifying process need drop into alkali and neutralize, and has increased processing costs, also possibly cause secondary pollution etc.
In recent years, the aerobic denitrification technology has obtained investigator's attention.This technology can realize synchronous nitration, denitrification, and promptly aerobic denitrification can take place in same reactor drum with nitration reaction, has reduced system space and construction costs, has also reduced operation easier and running cost.
However, the aerobic denitrification biological denitrificaion is owing to adopting the suspension activated sludge process, so still there are lower, the problems such as processing efficiency is lower, fluctuation of service of load at present.
Summary of the invention:
The cultural method that the objective of the invention is to be directed against the deficiency of prior art and a kind of aerobic denitrification particle sludge is provided; It can solve low, the problems such as reactor efficiency is low, investment working cost height of sludge concentration that exist in traditional nitrated, denitrification biological denitrogenation technology, effectively reduces simultaneously to contain the pollution that nitrate salt and nitrite waste water cause water body in the industries such as chemical fertilizer, breed.
For achieving the above object, the cultural method of a kind of aerobic denitrification particle sludge of the present invention adopts following technical scheme:
1, at first 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, then waste water is pumped into from reactor bottom, 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 drum, and air speed is 25～50L/h, utilizes air-flow to shear generation and the growth that promotes granule sludge;
3, keep the interior temperature of reactor drum between 25～35 ℃, the pH value is between 6～8, and dissolved oxygen is between 3～6mg/L, and hydraulic detention time is 6-10 hour, cultivates after 35～120 days, in reactor drum, obtains aerobic denitrification particle sludge.
Wherein, the substrate in the granule sludge culturing process is for containing nitrate salt, nitrite and organic waste water, and total nitrate concentration comprises nitrate salt and nitrite, is 10～500mg/L, and the molar ratio of nitrite and nitrate salt is 1: 5-5: 1; Organism includes methyl alcohol, ethanol, glucose etc.
In addition, should adopt the method that progressively improves water inlet nitrate salt and nitrite concentration in the granule sludge culturing process, help obtaining the aerobic denitrification particle sludge of a large amount of enrichments of denitrifying bacteria.
The aerobic denitrification particle sludge outward appearance that obtains according to the method for the invention is the tawny irregular particle, and particle diameter is 0.6～4mm, and density is 1.02～1.40g/cm
3Functional, can improve reactor drum volumetric loading, remove efficient and operation stability.
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 turns out the aerobic denitrification particle sludge with high-activity biological denitrogenation ability; Improved the denitrification denitrogenation efficient of ammonia nitrogen waste water; Simultaneously also can be used for containing the efficient removal of nitrate salt and nitrite waste water, thereby can effectively reduce the nitrogenous effluent pollution on the environment.
Embodiment:
Embodiment 1
Press 4: 1 mixed of mass ratio to the anaerobic grain sludge in UASB (the Up-flow Anaerobic Sludge Bed up-flow anaerobic sludge blanket) reactor drum of handling starch wastewater and the aerobic floc sludge of Treating Municipal Sewage, be inoculated into mixing sludge in the upflowing aerobic sludge bed bioreactor then.The total nitrate concentration of human configuration simulated wastewater is 300mg/L, and wherein the mol ratio of nitrite and nitrate salt is 2: 1, and reactor operating condition is: 25～35 ℃ of temperature; The pH value is between 6.4～7.8; Dissolved oxygen is at 3～6mg/L, and hydraulic detention time is 6～10 hours, adopts air aeration; Air speed is 20～30L/h, and the aerobic denitrification particle sludge of brown is observed in steady running in reactor drum after 72 days.Its particle diameter 0.7～1.1mm, density is 1.01～1.28g/cm
3, total nitric nitrogen clearance is 77%.
Embodiment 2
Adopt the seed sludge identical with embodiment 1; The total nitrate concentration of water inlet is progressively brought up to 300mg/L by 30mg/L in the culturing process, improves an influent load, and improves 30mg/L at every turn in per 3 days; Other conditions are identical with embodiment 1; The aerobic denitrification particle sludge of brown is observed in steady running in reactor drum after 65 days, its particle diameter 0.8～1.2mm, the about 1.15g/cm of density
3, total nitric nitrogen clearance is 83%.
Embodiment 3
Adopt the active sludge in certain slaughterhouse Sewage treatment systems to be inoculated in the upflowing aerobic reactor; The total nitrate concentration of human configuration simulated wastewater is 400mg/L, and wherein the mol ratio of nitrite and nitrate salt is 1: 2, and the reactor drum air speed is 30～45L/h; Other conditions are identical with embodiment 1; In the continuous 89 days post-reactors aerobic denitrification particle sludge appears, its particle diameter 2.8～3.5mm, the about 1.25g/cm of density
3, total nitric nitrogen clearance is 85%.
Claims (5)
1. the cultural method of an aerobic denitrification particle sludge, 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), waste water is pumped into from reactor bottom; Said waste water is for containing nitrate salt, nitrite and organic waste water, and total nitrate concentration comprises nitrate salt and nitrite; Be 10～500mg/L, and the molar ratio of nitrite and nitrate salt is 1: 5-5: 1;
(3), keep temperature in the reactor drum between 25～35 ℃, the pH value is between 6～8, dissolved oxygen is between 3～6mg/L, hydraulic detention time is 6-10 hour, cultivates after 35～120 days, in reactor drum, obtains aerobic denitrification particle sludge.
2. the cultural method of a kind of aerobic denitrification particle sludge according to claim 1 is characterized in that: adopt the method that progressively improves water inlet nitrate salt and nitrite concentration in the granule sludge culturing process.
3. the cultural method of a kind of aerobic denitrification particle sludge according to claim 1, it is characterized in that: the aerobic denitrification particle sludge outward appearance that obtains is the tawny irregular particle, and particle diameter is 0.6～4mm, and density is 1.02～1.40g/cm
3
4. the cultural method of a kind of aerobic denitrification particle sludge according to claim 1, it is characterized in that: the water intake mode that pumps into waste water is intermittent type or continous way.
5. the cultural method of a kind of aerobic denitrification particle sludge according to claim 1; It is characterized in that: reactor bottom is equipped with aeration head; Adopt air aeration when waste water is flowed through reactor drum, air speed is 25～50L/h, utilizes air-flow to shear generation and the growth that promotes granule sludge.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103102007B (en) * | 2013-02-06 | 2014-09-10 | 东北林业大学 | Long-term storage method of aerobiotic nitrifying granule sludge |
| CN104129845B (en) * | 2013-07-15 | 2017-02-08 | 成都信息工程大学 | Novel method for culturing aerobic denitrification granule sludge in continuous flow system |
| CN113354080A (en) * | 2021-06-10 | 2021-09-07 | 河北工程大学 | Culture method and application of denitrification granular sludge |
| CN113603311A (en) * | 2021-09-10 | 2021-11-05 | 上海环境保护有限公司 | Agent and process for removing total nitrogen in brewing wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699217A (en) * | 2005-06-03 | 2005-11-23 | 清华大学 | Culture method of aerobic nitrosated granular sludge |
| CN1884134A (en) * | 2006-07-07 | 2006-12-27 | 哈尔滨工业大学 | Two-stage synchronous nitrification denitrification process for treating ammonia nitrogen wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699217A (en) * | 2005-06-03 | 2005-11-23 | 清华大学 | Culture method of aerobic nitrosated granular sludge |
| CN1884134A (en) * | 2006-07-07 | 2006-12-27 | 哈尔滨工业大学 | Two-stage synchronous nitrification denitrification process for treating ammonia nitrogen wastewater |
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