CN103265111A - Anaerobic sludge granulating acceleration method - Google Patents
Anaerobic sludge granulating acceleration method Download PDFInfo
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- CN103265111A CN103265111A CN2013101691074A CN201310169107A CN103265111A CN 103265111 A CN103265111 A CN 103265111A CN 2013101691074 A CN2013101691074 A CN 2013101691074A CN 201310169107 A CN201310169107 A CN 201310169107A CN 103265111 A CN103265111 A CN 103265111A
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an anaerobic sludge granulating acceleration method. The method comprises a step that granular active carbon and polyquatemary salt are simultaneously added to a sludge mixed liquid system. The particle size of the granular active carbon is 0.3-0.4mm. 450-550mg of the granular active carbon is added to each liter of the sludge mixed liquid. 5-15mg of the polyquatemary salt is added to each liter of the sludge mixed liquid. The method reduces the oxidation reduction capability of the sludge system, increases the contact and adhesion between granules and microbes to accelerate the enrichment of the microbes on the surfaces of the granules in order to form the core carrier of granular sludge, increases the stability and the settlement performance of the system, enhances the granule formation speed, and reinforces the sludge granulating effect.
Description
Technical field
The present invention relates to field of waste water treatment, particularly the granular method of a kind of acceleration anaerobic sludge.
Background technology
Advantage such as high efficiency anaerobic reactor technology and treatment system thereof are reduced investment outlay, cut down the consumption of energy with it and working cost, treatment effect be good becomes the water technology of a very attractive, and has widely applied in industry, has a extensive future.But because the sensitivity characteristic of most of anaerobic bacteria flora, make anaerobic reactor very responsive to minimum variation meeting, so the start time of anaerobic system is longer, short two to three months, long for half a year even 1 year, had a strong impact on anaerobic reactor in Application of Sewage.It is exactly the granule sludge that how to obtain pending waste water is had adaptability that anaerobic reactor obtains the efficient key that starts, how to turn out and have good settling property, pending waste water is had adaptability, and active high mud becomes anaerobic treatment scientific worker's permanent proposition.
Along with the effort of each researcher both at home and abroad, the granular sludge model also there has been the understanding of multi-angle profound level.And based on many theories of granular sludge model.Also formed the granular method of numerous accelerate sludge, for example added inorganic metal salt, high-speed mixing method adds organic polymer, adds the inert carrier particle thing.Add Ca
2+, Mg
2+Deng inorganic metal salt; utilize works such as its charge neutrality electrostatic adhesion and adsorption bridging to promote the granule sludge gathering of adult just and the effect of bonding in order to play; but some heavy metal ion not only can not improve the methanogenesis activity of anaerobic grain sludge; produce stronger restraining effect on the contrary, influence the granulating process.Most metal ions also can with anaerobic system in CO
3 2-In conjunction with and form throw out, in the inside reactor fouling, be difficult to degraded remove, reduced useful volume.High-speed mixing method has brought liveness with the high speed disturbance to whole reaction system, strengthened the muddy water contact area, efficiently ensured the supply of the nutritive substance of mud, but its prerequisite is to need to use highly active anaerobic sludge (low activity mud can break diffusing under high-speed stirring on the contrary), and operating procedure is loaded down with trivial details, and energy consumption is higher.The single organic polymer that adds, as chitosan, polyquaternium, PAM, PAC etc., can by reduce system's redox ability, improve contact between particle and microorganism and adhere to, electrostatic adhesion and adsorption bridging effect, the reinforcing particle process.But because mud is electronegative; the superpolymer that adds should be cationic; and this compounds has certain toxicity to microorganism mostly; and the activity of inhibition anaerobion; though some effect of granulating at the cultivation initial stage to mud; but to the middle and later periods, its inhibition to anaerobion begins to play a leading role.The single inert carrier particle thing that adds; as powdery zeolite; hard silico-calcium fibrous particle etc.; can utilize its surface properties; it is long-pending in the richness on its surface to accelerate anaerobion, makes it to form the core carrier of granule sludge, accelerates granular sludge; owing to its inertia factor, can not increase the redox ability of system itself simultaneously.But not biodegradable because adding inert material, just reduced the useful volume of reactor in the course of time, the increase of mud proportion also can have certain influence to sludge bulking and mass transfer effect.And add excessive particle and can under sluicing and biogas stir, clash into mutually, rub, cause strong shearing action, hinder gathering and the bonding of adult at the beginning of the mud, do harm rather than good for the growth of granule sludge.
Summary of the invention
In order to overcome the deficiencies in the prior art; the object of the present invention is to provide the granular method of a kind of acceleration anaerobic sludge; reduced the redox ability of sludge system; improve and contact between particulate matter and microorganism and adhere to accelerate microorganism and amass in the richness on particulate matter surface; make it to form the core carrier of granule sludge; improve system stability and settling property, enhanced granule forms speed, has strengthened the effect of granular sludge.
Purpose of the present invention is achieved through the following technical solutions: the granular method of a kind of acceleration anaerobic sludge may further comprise the steps:
In the mud mixed liquid system, add granulated active carbon and polyquaternium simultaneously.
The particle diameter of described granulated active carbon is 0.3～0.4mm.
The addition of described granulated active carbon is to add 450～550mg in every liter of mud mixed liquid.
The addition of described polyquaternium is to add 5～15mg in every liter of mud mixed liquid.
In the mud mixed liquid system, added granulated active carbon and polyquaternium every 10 days simultaneously.
Reaction principle of the present invention is:
In anaerobic sludge, add granulated active carbon (GAC) and polyquaternium simultaneously, by the redox ability in the polyquaternium reduction system, improve and contact between particle and microorganism and adhere to, and pass through electrostatic adhesion and the adsorption bridging effect of its strong cation, the reinforcing particle process; Adding granulated active carbon (GAC) is to utilize its porous surface character; strengthen the contact area of anaerobion and inertia core, accelerate microorganism and amass in the richness on its surface, make it to form fast the core carrier of granule sludge; improve system stability and settling property, enhanced granule forms speed.
Compared with prior art, the present invention has the following advantages and beneficial effect:
(1) surface porosity of the inertia core granulated active carbon (GAC) of the present invention's interpolation makes it that good specific surface area be arranged, and the richness that more is conducive to anaerobion is long-pending; The light proportion of granulated active carbon (GAC) has also been alleviated mud proportion largely simultaneously increases unfavorable property.
(2) polyquaternium of the present invention's interpolation, compare with other organic polymer, biological degradability is higher, pernicious influence to anaerobic system has been reduced to minimum, can than few additive the time, reach best effect, farthest reduce the reduction of the useful volume that its accumulation in reactor brings.Can create a large amount of bio aggregate by the effect of electrostatic attraction and adsorption bridging with electronegative bacterial cell because polyquaternium has positive charge, strengthen the intensity of biological floe.And polyquaternium flocculating property in the system that pH fluctuates easily is stable, and the emergency situations in the industrial production is had stronger surge capability.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Get plant effluent anaerobic treatment workshop section mud as kind of a mud, the SMA that plants mud is 40.8ml/(gd), planting in the mud has mud particle diameter＜0.15mm of 96.3%, and VSS/SS is 0.42.Doing 5 parts of mud samples is parallel sample, adds the corresponding thing that adds to mud sample respectively by the prescription of table 1, and normal temperature is cultivated, and adds the corresponding thing that adds every 10 days by identical add-on.With 30 days be a culture cycle, by SMA, the COD clearance, mud particle diameter and mud VSS/SS characterize the granular sludge degree.Respectively at the 10th day, the 20th day, survey the above-mentioned parameter of each parallel sample in the time of the 30th day, compare research, the results are shown in Table 1～3.
Each mud sample of table 1 is cultivated the 10th day granulating degree contrast
As can be seen from Table 1, because it is not good to plant the performance of mud, in cultivation preceding 10 days, the granulating degree of mud did not have remarkable improvement.But the COD clearance in the sample 1,3,4 has significant advantage than other sample; explanation is at this section in the period; these two kinds add thing and have effectively strengthened the immobilized of anaerobion, have promoted granulating, thereby have made its function in anaerobic system that higher starting point arranged.But the COD clearance in the sample 2 is lower, and owing to the amount that adds thing is just low, effect is also not obvious at short notice.
Each mud sample of table 2 is cultivated the 20th day granulating degree contrast
As can be seen from Table 2, through 20 days cultivation, have the granulating degree advantage of mud in the sample that adds thing to display, wherein granular sludge degree increasing degree is bigger in sample 1～3 and the sample 4.Granulating mud has appearred among observing sample 1～3, but comparatively small amt.
Each mud sample of table 3 is cultivated the 30th day granulating degree contrast
As can be seen from Table 3; the granulating degree of mud has a clear superiority in than other sample in the sample 1～3; add the mud sample (sample 1) of 450～550mg/L granulated active carbon (GAC) and 5～15mg/L polyquaternium at methanogenesis activity; the COD clearance all obviously is better than other sample on mud particle diameter and the VSS/SS.And a large amount of granulating mud appearred in the sample 1～3 significantly, wherein the mud particle diameter has reached the 19.8%(mass ratio more than 0.3mm).Experimental result shows to be taked 450～550mg/L granulated active carbon (particle diameter is 0.3～0.4mm) and the proportioning of 5～15mg/L polyquaternium, and is comparatively efficient to accelerating the anaerobic sludge granulating.
Above-described embodiment is preferred implementation of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. one kind is accelerated the granular method of anaerobic sludge, it is characterized in that, may further comprise the steps:
In the mud mixed liquid system, add granulated active carbon and polyquaternium simultaneously.
2. the granular method of acceleration anaerobic sludge according to claim 1 is characterized in that, the particle diameter of described granulated active carbon is 0.3～0.4mm.
3. the granular method of acceleration anaerobic sludge according to claim 1 is characterized in that, the addition of described granulated active carbon is to add 450～550mg in every liter of mud mixed liquid.
4. the granular method of acceleration anaerobic sludge according to claim 1 is characterized in that, the addition of described polyquaternium is to add 5～15mg in every liter of mud mixed liquid.
5. the granular method of acceleration anaerobic sludge according to claim 1 is characterized in that, adds granulated active carbon and polyquaternium every 10 days simultaneously in the mud mixed liquid system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936245A (en) * | 2014-02-28 | 2014-07-23 | 浙江工业大学 | Sludge granulating treatment technology used for improving dehydration performance of sludge |
| CN106630131A (en) * | 2016-10-25 | 2017-05-10 | 南京大学宜兴环保研究院 | Preparation method of modified attapulgite particles and method for accelerating granulation of anaerobic sludge by modified attapulgite particles |
| CN111362402A (en) * | 2020-03-18 | 2020-07-03 | 山东大学 | Method for reinforcing anaerobic dynamic membrane bioreactor by combining GAC and PAC and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1887737A (en) * | 2006-07-14 | 2007-01-03 | 太原理工大学 | Fast culture process in anaerobic grain sludge |
| JP2009274008A (en) * | 2008-05-14 | 2009-11-26 | Sawatec Kk | Wastewater treatment apparatus and wastewater treatment method |
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2013
- 2013-05-09 CN CN2013101691074A patent/CN103265111A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887737A (en) * | 2006-07-14 | 2007-01-03 | 太原理工大学 | Fast culture process in anaerobic grain sludge |
| JP2009274008A (en) * | 2008-05-14 | 2009-11-26 | Sawatec Kk | Wastewater treatment apparatus and wastewater treatment method |
Non-Patent Citations (1)
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| 李保石: "常温低浓度进水条件下投加惰性颗粒物和絮凝剂对厌氧颗粒污泥形成的影响", 《中国优秀硕士学位论文全文数据库工程技术I辑（月刊）》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936245A (en) * | 2014-02-28 | 2014-07-23 | 浙江工业大学 | Sludge granulating treatment technology used for improving dehydration performance of sludge |
| CN103936245B (en) * | 2014-02-28 | 2016-06-22 | 浙江工业大学 | A kind of granular sludge for improving dewatering performance of sludge processes technique |
| CN106630131A (en) * | 2016-10-25 | 2017-05-10 | 南京大学宜兴环保研究院 | Preparation method of modified attapulgite particles and method for accelerating granulation of anaerobic sludge by modified attapulgite particles |
| CN111362402A (en) * | 2020-03-18 | 2020-07-03 | 山东大学 | Method for reinforcing anaerobic dynamic membrane bioreactor by combining GAC and PAC and application thereof |
| CN111362402B (en) * | 2020-03-18 | 2021-04-06 | 山东大学 | Method for reinforcing anaerobic dynamic membrane bioreactor by combining GAC and PAC and application thereof |
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Application publication date: 20130828 |