CN102229460A - Method for inducing aerobic sludge to granulate by using sludge micropowder - Google Patents

Method for inducing aerobic sludge to granulate by using sludge micropowder Download PDF

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Publication number
CN102229460A
CN102229460A CN2011101410207A CN201110141020A CN102229460A CN 102229460 A CN102229460 A CN 102229460A CN 2011101410207 A CN2011101410207 A CN 2011101410207A CN 201110141020 A CN201110141020 A CN 201110141020A CN 102229460 A CN102229460 A CN 102229460A
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China
Prior art keywords
sludge
micropowder
reactor
aerobic
mud
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CN102229460B (en
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李军
王丹君
陈涛
卓未龙
王志宏
倪永炯
韦甦
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Zhejiang Zone King Environmental Sci&tech Co ltd
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Zhejiang Zone King Engineering Technology Co ltd
Zhejiang University of Technology ZJUT
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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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/20Sludge processing

Abstract

The invention provides a method for inducing aerobic sludge to granulate by using sludge micropowder. The method comprises the following steps of: preparing the sludge micropowder from the residual sludge in a sewage plant by utilizing a condensation nucleus mechanism; and throwing the sludge micropowder into an aerobic treatment tank or a reactor to induce to generate aerobic granular sludge. The method has the advantages that: 1) waste is changed into treasure, so secondary pollution of the sludge to the environment is eliminated and the sludge is utilized as a resource; 2) the sludge is a residual substance of active sludge and an additive for partial water treatment and has the characteristics similar to those of the active sludge, so the sewage treatment process is influenced a little; 3) the production cost of the sludge micropowder is low and the production process of the sludge micropowder is simple; and 4) in the aerobic granular sludge prepared by induction the ammonia nitrogen, the removal rate is basically maintained to be about 95 percent and the COD removal rate is about 90 percent; and compared with the common active sludge, the aerobic granular sludge has high settling property, wherein the settling speed is 20 to 24 m/h and the sludge volume index (SVI) can be reduced to below 40 mL/g.

Description

A kind of mud micro mist is induced Miniaturation method of aerobic sludge
(1) technical field
The present invention relates to a kind of mud micro mist and induce Miniaturation method of aerobic sludge.
(2) background technology
The aerobic particle mud technology is a kind of novel wastewater processing technology, because it has good settling property; High sludge concentration; Can bear high organic loading, load impact and toxic substance etc., therefore more and more be subjected to people's attention in field of waste water treatment.The formation of aerobic particle mud is a complex process that comprises physics, chemistry and biological action, and this process can be regarded as under hydrodynamic condition, the poly-phenomenon of organism that microorganism forms from fixed action.Because operational condition, type of reactor, influent quality, culturing purposes difference, the aerobic particle mud that Chinese scholars proposes on experimental study basis separately forms mechanism and can not annotate all granule sludges and form situation.At present, granule sludge forms mechanism and mainly contains the outer polymer hypothesis of born of the same parents, self coagulation principle, thread fungus hypothesis and nucleus of condensation mechanism.
Nucleus of condensation mechanism is exactly that the formation of aerobic particle mud at first will have nucleus of condensation to come to provide the place for gathering and the growth of microorganism, these nucleus of condensation can be the bigger suspended particles of quality in the water into, can be the anaerobism or the aerobic particle mud of inoculation, also can be the microbial film that forms on the reactor wall.Even can be thread fungus bigger in seed sludge or the mixed solution.Inorganic granule wherein can have a spot of electric charge under the effect of hydraulic shear, when this electric charge is positive charge, can adsorb microorganisms such as a certain amount of bacterium; Organic granule wherein can the secretion extracellular polymeric under the hydraulic shear effect, improves the hydrophobicity of cell surface, reduces the cell surface Gibbs free energy, for cell-cell interaction and stick favourable condition is provided.Under reactor intermittent operation operating mode, control operational conditions such as the suitable sedimentation degree of depth, water outlet time, larger particles is stayed in the reactor, thereby the microorganism that makes the nucleus of condensation and stick on it has competent time and nutriment to grow, and further stick more microorganism, form the irregular mud granule of profile, i.e. embryo's granule sludge.Embryo's granule sludge forms the aerobic particle mud with regular profile and solid 3-D solid structure gradually under the effect of hydraulic shear, after particle reaches certain size because the restriction of oxygen transfer and matrix mass transfer, particle size stops to increase, and the aerobic particle mud that form this moment is sophisticated aerobic particle mud.
The present invention utilizes sewage treatment plant residual mud micro mist to induce granular sludge as the nucleus of condensation in the aerobic particle mud forming process in conjunction with the formation mechanism of nucleus of condensation mechanism.Also waste sludge is carried out recycling treatment, obtain certain economic benefits.
(3) summary of the invention
The technological method that the purpose of this invention is to provide a kind of low cost, inducing culture granule sludge easy to operate, high efficiency.
The technical solution used in the present invention is:
A kind of mud micro mist is induced Miniaturation method of aerobic sludge, and described method comprises:
(1) get the excess sludge of sewage work, drying is crushed to 100~800 orders and obtains the mud micro mist; Described excess sludge is meant the excess sludge that sludge thickener is got rid of.
(2) get active sludge in the sewage disposal plant aeration tank, drop in the reactor with 800~1000mg/L left and right sides input amount; The granulating of described aerobic sludge also can directly be carried out in the aeration tank of sewage work; Described active sludge comprises microorganism and organism that depends on and inorganics etc.
(3) after reactor elder generation sky exposed to the sun 2 days, step (1) mud micro mist is pressed 100mg/L left and right sides addition drop in the reactor;
(4) at 5~10kg/m 3Under the condition of high volumetric loading .d and biological hungry (refer to that carbon source exhausts in the water, bacterium enters the endogenous respiration stage), adopting with the sodium-acetate is the sewage of carbon source, and water inlet moves under normal condition continuously; 5~10 days, in reactor, obtain aerobic granular mud.
Preferably, reactor operational conditions setting time of repose is 1.5h in the described step (4), and aeration time is 2.5h, and the cycle of operation is 4h.
Beneficial effect of the present invention is mainly reflected in:
1) utilizes nucleus of condensation mechanism, adopt the excess sludge of Sewage Plant to make the mud micro mist, be fed in aerobic treatment pond or the reactor, induce the generation aerobic particle mud;
2) turn waste into wealth, eliminate mud, make the recycling sludge utilization second environmental pollution;
3) mud itself is exactly the residuals and the used additive of portion water processing of active sludge, and its characteristic and active sludge character are approaching, and is little to the influence of sewage treatment process;
4) production cost of mud micro mist is low, production technique is simple;
5) induce the aerobic particle mud of preparation to have a lot of technical advantages than common active sludge, substantially remain on about 95% as the granule sludge ammonia-N removal rate that adds micro mist formation by this experiment, the clearance of COD is about 90%, compared settling property preferably with ordinary activated sludge, settling velocity is 20~24m/h.
(4) description of drawings
Fig. 1 is embodiment 1 a reactor used structural representation;
Fig. 2 is the mud photo of inoculation;
Fig. 3 cultivates 5 days mud granule photo after adding micro mist.
(5) embodiment
The present invention is described further below in conjunction with specific embodiment, but protection scope of the present invention is not limited in this:
Embodiment 1:
Reactor usedly form by sludge reaction district 1 and gas-liquid-solid three-phase separator 2 (comprising the settling region) two parts.Place an aerating apparatus in the bottom, the experimental installation structural representation is seen Fig. 1.
Granulating is cultivated:
(1) get the excess sludge of urban wastewater treatment firm, drying is crushed to 500 orders and obtains the mud micro mist;
(2) get active sludge (mud form photo is referring to Fig. 2) in the urban wastewater treatment firm aeration tank, drop in the reactor with 900mg/L left and right sides input amount;
(3) after reactor elder generation sky exposed to the sun 2 days, step (1) mud micro mist is pressed 100mg/L left and right sides addition drop in the reactor;
(4) at 8kg/m 3.d under high volumetric loading about and the biological in advance starvation conditions, adopting and being configured to COD with sodium-acetate, ammonia chloride, potassium primary phosphate is 1500mg/L, NH 4-N concentration is that 50mg/L, TP concentration are the sewage of 12.5mg/L, water inlet operation continuously; The setting time of repose is 1.5h, and aeration time is 2.5h, and the cycle of operation is 4h, moves about 5 days, can begin to take shape mud granule (referring to Fig. 3), and steady running is after 10 days, the SVI<40ml/g of granule sludge, and settling property is good.
As can be seen from Figures 2 and 3, add after the micro mist, the performance of active sludge has obtained very big improvement, and mud is granulating in the short period of time, and the mud micro mist that is promptly added can effectively be induced the aerobic sludge granulating.
The granule sludge ammonia-N removal rate that the present invention adds micro mist formation remains on about 95% substantially, the clearance of COD is about 90%, compared settling property preferably with ordinary activated sludge, settling velocity is 20~24m/h, and sludge volume index (SVI) drops to below the 40ml/g from the 120ml/g of seed sludge.

Claims (2)

1. a mud micro mist is induced Miniaturation method of aerobic sludge, and described method comprises:
(1) get the excess sludge of sewage work, drying is crushed to 100~800 orders and obtains the mud micro mist;
(2) get active sludge in the sewage disposal plant aeration tank, drop in the reactor with 800~1000mg/L input amount;
(3) after reactor elder generation sky exposed to the sun 1~2 day, step (1) mud micro mist is dropped in the reactor by 50~150mg/L addition;
(4) at 5~10kg/m 3.d under the high volumetric loading and biological starvation conditions, adopting with the sodium-acetate is the sewage of carbon source, and the water inlet operation obtained aerobic granular mud after 5~10 days in reactor continuously.
2. the method for claim 1, it is characterized in that step (4) reactor operational conditions is: time of repose is 1.5h, and aeration time is 2.5h, and the cycle of operation is 4h.
CN2011101410207A 2011-05-27 2011-05-27 Method for inducing aerobic sludge to granulate by using sludge micropowder Active CN102229460B (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103553288A (en) * 2013-11-21 2014-02-05 武汉森泰环保工程有限公司 Method for preparing water treatment biological activity accelerant from winery wastewater treatment sludge
CN103708688A (en) * 2013-12-10 2014-04-09 浙江工业大学 Method for promoting aerobic sludge granulation by using crystal micro-powder
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
CN105502641A (en) * 2015-12-03 2016-04-20 高大元 Method for inhibiting activated sludge bulking
CN105731636A (en) * 2014-12-11 2016-07-06 中国矿业大学 Method for rapidly cultivating aerobic granular sludge
CN105858871A (en) * 2015-01-22 2016-08-17 中国矿业大学 Process for rapid primary granulation of sludge
CN106145328A (en) * 2016-08-02 2016-11-23 浙江工业大学 A kind of method utilizing alum sludge to promote aerobic sludge granulation
CN106145327A (en) * 2016-08-02 2016-11-23 浙江工业大学 A kind of promote aerobic particle mud to be formed and stable compound feed intake and preparation method thereof
CN106167340A (en) * 2016-08-22 2016-11-30 浙江工业大学 A kind of AAO continuous-flow aerobic granular sludge denitrification dephosphorization technique and system
CN106219740A (en) * 2016-08-11 2016-12-14 浙江工业大学 A kind of alum sludge is used to reduce film blocking and the method for dephosphorization in MBR reactor
CN106809948A (en) * 2016-12-14 2017-06-09 浙江工业大学 A kind of method that utilization excess sludge feedback mechanism promotes aerobic sludge granulation
CN107043170A (en) * 2017-04-18 2017-08-15 中国矿业大学 One kind traps CO in aerobic water treatment procedure2Method
CN109231444A (en) * 2018-09-27 2019-01-18 华南师范大学 A kind of calcification anaerobic grain sludge secondary nucleation reuse method and system
CN110330099A (en) * 2019-08-14 2019-10-15 重庆市生态环境科学研究院 A kind of method for culturing aerobic granular sludge and culture apparatus

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Cited By (20)

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Publication number Priority date Publication date Assignee Title
CN103553288A (en) * 2013-11-21 2014-02-05 武汉森泰环保工程有限公司 Method for preparing water treatment biological activity accelerant from winery wastewater treatment sludge
CN103708688A (en) * 2013-12-10 2014-04-09 浙江工业大学 Method for promoting aerobic sludge granulation by using crystal micro-powder
CN103708688B (en) * 2013-12-10 2015-11-25 浙江工业大学 A kind of crystal micro-powder promotes the method for aerobic sludge granulation
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
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
CN105731636A (en) * 2014-12-11 2016-07-06 中国矿业大学 Method for rapidly cultivating aerobic granular sludge
CN105858871A (en) * 2015-01-22 2016-08-17 中国矿业大学 Process for rapid primary granulation of sludge
CN105502641B (en) * 2015-12-03 2018-07-17 中矿(天津)岩矿检测有限公司 A kind of method of inhibitory activity sludge bulking
CN105502641A (en) * 2015-12-03 2016-04-20 高大元 Method for inhibiting activated sludge bulking
CN106145328A (en) * 2016-08-02 2016-11-23 浙江工业大学 A kind of method utilizing alum sludge to promote aerobic sludge granulation
CN106145327A (en) * 2016-08-02 2016-11-23 浙江工业大学 A kind of promote aerobic particle mud to be formed and stable compound feed intake and preparation method thereof
CN106219740A (en) * 2016-08-11 2016-12-14 浙江工业大学 A kind of alum sludge is used to reduce film blocking and the method for dephosphorization in MBR reactor
CN106219740B (en) * 2016-08-11 2019-07-30 浙江工业大学 A method of film blocking and dephosphorization in MBR reactor are reduced using alum sludge
CN106167340A (en) * 2016-08-22 2016-11-30 浙江工业大学 A kind of AAO continuous-flow aerobic granular sludge denitrification dephosphorization technique and system
CN106167340B (en) * 2016-08-22 2020-05-05 浙江工业大学 AAO continuous flow aerobic granular sludge nitrogen and phosphorus removal process and system
CN106809948A (en) * 2016-12-14 2017-06-09 浙江工业大学 A kind of method that utilization excess sludge feedback mechanism promotes aerobic sludge granulation
CN107043170A (en) * 2017-04-18 2017-08-15 中国矿业大学 One kind traps CO in aerobic water treatment procedure2Method
CN109231444A (en) * 2018-09-27 2019-01-18 华南师范大学 A kind of calcification anaerobic grain sludge secondary nucleation reuse method and system
CN109231444B (en) * 2018-09-27 2021-10-01 华南师范大学 Secondary nucleation recycling method and system for calcified anaerobic granular sludge
CN110330099A (en) * 2019-08-14 2019-10-15 重庆市生态环境科学研究院 A kind of method for culturing aerobic granular sludge and culture apparatus

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Address after: 310014 Hangzhou city in the lower reaches of the city of Zhejiang Wang Road, No. 18

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