CN109879540A - A kind of devices and methods therefor improving Nitrogen removal effect using piggery wastewater interior carbon source - Google Patents
A kind of devices and methods therefor improving Nitrogen removal effect using piggery wastewater interior carbon source Download PDFInfo
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- CN109879540A CN109879540A CN201910207928.XA CN201910207928A CN109879540A CN 109879540 A CN109879540 A CN 109879540A CN 201910207928 A CN201910207928 A CN 201910207928A CN 109879540 A CN109879540 A CN 109879540A
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- carbon source
- alkaline hydrolysis
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Abstract
The invention belongs to pig breeding industry field of waste water treatment, disclose a kind of devices and methods therefor that Nitrogen removal effect is improved using piggery wastewater interior carbon source.The present invention improves Nitrogen removal effect using ultrasonic alkaline hydrolysis Combined Treatment pig manure as novel pig manure carbon source, and using it.It comprises the concrete steps that: pig manure (TS=8%) being pumped into ultrasonic alkaline hydrolysis processing pond, in acoustic density 1000WL‑1, ultrasonic time 40min, pH=11 carry out ultrasonic alkaline hydrolysis processing, and SCOD concentration improves 1.86 times；Then the pig manure carbon source of 1.78% additive amount is pumped into again in SBR biochemical treatment tank, it is 72.29% that Denitrification rate, which reaches 124.16%, TN removal rate, significantly improves Nitrogen removal effect.Illustrate that the denitrification of anaerobic digestion solution biochemical treatment can be significantly improved by adding pig manure carbon source, denitrification effect is obvious, realizes that waste resource recovery utilizes, is a kind of simple and effective New Biodenitrification Process.
Description
Technical field
The invention belongs to pig breeding industry field of waste water treatment, and in particular to a kind of to improve biology using piggery wastewater interior carbon source
The devices and methods therefor of denitrification effect.
Background technique
Piggery wastewater is a kind of organic wastewater containing high concentration N, P, if direct emission natural water will lead to water body richness
Nutrient laden endangers Water-environment Ecological System, while will also result in and seriously threatening to human health；Currently, generalling use both at home and abroad
Biogas anaerobic fermentation is handled, and is generated electricity with reducing organic contamination and generating biogas, but by Anaerobic Digestion still without
Method removes NH3- N, instead anaerobic effluent NH3- N concentration becomes higher；Due in short supply in South China land resource,
The unconditional natural processing system for building a large amount of consumption biogas slurries, therefore also need further to handle anaerobic digestion using aerobic process
Liquid.Traditionally aerobic process handles the sequencing batch active sludge (SBR) being simple and convenient to operate frequently with process flow.But by
It is removed in most of bio-degradable COD in anaerobic digestion process, causes anaerobic effluent COD/TN low, biodegradability
Difference；In SBR denitrification process, lack degradable carbon source as electron donor, it is low to eventually lead to SBR nitric efficiency, is discharged TN
It is higher.
Lack carbon source, the problem of denitrification effect difference for anaerobic digestion solution, Many researchers all take directly addition carbon source
To improve COD/TN, improve denitrification effect.There are two types of usual carbon source sources, first is that directly addition commodity carbon source, as glucose,
Methanol, acetic acid and sodium acetate etc., although denitrification effect is good, these commodity carbon sources are expensive, at high cost, limit it and answer
With；Second is that the carbon source that addition is prepared through waste, such as sludge hydrolytic liquid, food waste hydrolysis acidifying liquid and 30% indigested pig farm
Waste water etc., although nitrogen removal performance is significantly improved, these carbon source limited sources, in terms of the transportation dispatching to piggery wastewater at
There are inconveniences for reason；Meanwhile addition 30% does not digest piggery wastewater, brings NH into3- N amount is big, and aeration quantity increases and civil engineering
Investment also will increase, and operating cost is high.Therefore, in conjunction with pig farm actual conditions, find one kind can gather materials on the spot, economical and effective and
The few carbon source of additive amount is of great significance to piggery wastewater biochemical denitrification.
Ultrasonic wave and alkali process technology can effectively breaking sludge flocculation structure and microorganism wall, discharge object intracellular
Matter promotes the release of dissolved matter.Correlative study shows two kinds of technical tie-up processing, and SCOD result of extraction is more preferably；But currently,
Ultrasound and alkaline hydrolysis pretreatment are concentrated mainly in waste activated sludge processing, to promote anaerobic digestion methane production；But with ultrasonic alkaline hydrolysis
Pretreated pig manure improves traditional piggery wastewater Nitrogen removal effect as interior carbon source, at home and abroad has no related in research
Report；Meanwhile Elbeshbishy et al. (paper: Impact of ultrasonication of hog manure on
Anaerobic digestability) research discovery pig manure ratio WAS be more suitable for being ultrasonically treated, under equal energy, SCOD release effect
Fruit is more preferably；Carbon source containing more SCOD is more advantageous to subsequent biochemical processing, shows to add ultrasonic alkaline hydrolysis pig manure as interior carbon source
To improve piggery wastewater Nitrogen removal effect with more feasibility.
Summary of the invention
In order to overcome shortcoming and deficiency existing in the prior art, the primary purpose of the present invention is that providing a kind of using pig
Field waste water interior carbon source improves the device of Nitrogen removal effect.
Improve using piggery wastewater interior carbon source using above-mentioned apparatus another object of the present invention is to provide a kind of
The method of Nitrogen removal effect；This method prepares the pig manure carbon source of high concentration SCOD using ultrasonic wave alkaline hydrolysis processing pig manure, and
The denitrification effect of anaerobic digestion solution is improved as new internal carbon source by adding pig manure carbon source, reduces treatment of swine wastewater work
Skill cost provides a kind of economically viable inexpensive innovative technology for piggery wastewater biological denitrification process application.
The object of the invention is achieved through the following technical solutions:
A kind of device improving Nitrogen removal effect using piggery wastewater interior carbon source, the device include ultrasonic alkaline hydrolysis processing
Pond, continuous filter and SBR biochemical treatment tank；
The ultrasound alkaline hydrolysis processing pond includes ultrasonic alkaline hydrolysis treatment tank body and Vltrasonic device, and the Vltrasonic device setting is super
The top of sound alkaline hydrolysis treatment tank body；The bottom of the ultrasound alkaline hydrolysis treatment tank body is provided with the first blender；The ultrasound alkaline hydrolysis
The first water inlet pipe is provided with above treatment tank body side, ultrasonic alkaline hydrolysis treatment tank body is provided with the first draining below side
Pipe；
The continuous filter includes diafiltration pond body, is provided with filter in the middle part of the diafiltration pond body；The continuous filter side
It is provided with the second water inlet pipe above face, is percolated below body side and is provided with the second drainpipe；
The SBR biochemical treatment tank includes SBR biochemistry pond body；Be provided in the SBR biochemistry pool body the second blender and
Water decanter, the second blender lower section are provided with micro-pore aeration pipeline；Third water inlet is provided at the top of the SBR biochemistry pond body
It manages, the 4th water inlet pipe and outlet conduit, the lower section setting of SBR biochemistry body side is provided with above SBR biochemistry body side
There is sludge pipe, sludge pipe is connected with sludge pump；
First drainpipe of ultrasonic alkaline hydrolysis processing pond is connected with the second water inlet pipe of continuous filter with pipeline, and is arranged on pipeline
One draining pump；Second drainpipe of continuous filter is connected with the third water inlet pipe of SBR biochemical treatment tank with pipeline, and is arranged on pipeline
Two draining pumps.
The micro-pore aeration pipeline is connected with air blower.
A method of it carries out improving Nitrogen removal effect using piggery wastewater interior carbon source using above-mentioned device, including
Ultrasonic alkaline hydrolysis processing prepares pig manure carbon source and subsequent SBR biochemical treatment denitrification effect, specifically includes following operating procedure:
(1) pig manure that material concentration is 8% is pumped into ultrasonic alkaline hydrolysis processing pond from the first water inlet pipe, under stirring
It by Vltrasonic device and manually adds lye and ultrasonic alkaline hydrolysis Combined Treatment is carried out to pig manure；
(2) the resulting ultrasonic alkaline hydrolysis of step (1) treated mixed liquor is pumped into continuous filter from the second water inlet pipe, is passed through
Filter is filtered, and as pig manure carbon source, filter residue then manually shovels out after desiccation filtrate；
(3) the resulting pig manure carbon source of step (2) is pumped into SBR biochemical treatment tank from third water inlet pipe as internal carbon
Source, anaerobic digestion solution are pumped into SBR biochemical treatment tank from the 4th water inlet pipe, are aerated by micro-pore aeration pipeline, utilize
Two blenders are stirred, and water outlet is discharged by outlet conduit, and sludge is discharged by sludge pipe.
Step (1) lye is the sodium hydroxide solution that NaOH and water are mixed with 1:5.
Step (1) the ultrasonic alkaline hydrolysis Combined Treatment uses the following conditions: ultrasonic acoustic density is 1000WL-1, ultrasound
Time is 40min, pH=11.
In step (3) the SBR biochemical treatment tank, the cycle of operation is aeration 16h, stirs 6h, then passes through standing, draining
And the total 2h of water inlet, a cycle for 24 hours, hydraulic detention time 3d；The additive amount of the pig manure carbon source is that SBR biochemical treatment tank is total
The 1.78% of volume of intaking, addition period are after aeration phase stopping.
It is up to standard to discharge after step (3) the SBR biochemical treatment tank operation 41d.
Compared with prior art, the beneficial effects of the present invention are:
(1) pig manure is handled by ultrasonic alkaline hydrolysis, ultrasonic wave and alkali Combined Treatment accelerate pig manure flocculation structure and cell wall
Process is cracked, SCOD releasing effect is obvious, and manufactured pig manure carbon source is a kind of interior carbon source containing high concentration SCOD.
(2) when preparing pig manure carbon source in Practical Project, pig manure is available locally, and marsh gas power generation can mention for equipment such as ultrasounds
For electric power, operating cost is low, can reach waste resource recovery cycling and reutilization.
(3) by the new internal carbon source of addition preparation, the biochemical treatment nitric efficiency of piggery wastewater is high, with pure chemistry carbon
Source effect is suitable, has achieved the effect that solve piggery wastewater denitrogenation problem again while reducing cost.
Detailed description of the invention
Fig. 1 is the nitrogen variation before and after adding carbon source in SBR, wherein a NH3- N, b NO2- N, c NO3- N, d are
TN。
Fig. 2 is the preparation process and its applicating flow chart of a kind of novel piggery wastewater interior carbon source, and wherein A is ultrasonic alkaline hydrolysis
Processing pond, B are continuous filter, and C is SBR biochemical treatment tank.
Fig. 3 is ultrasonic alkaline hydrolysis processing pond schematic diagram, wherein 1 is ultrasonic alkaline hydrolysis treatment tank body, 2 be Vltrasonic device, and 3 be first
Draining pump, 4 be the first drainpipe, and 5 be the first blender, and 6 be the first water inlet pipe.
Fig. 4 is continuous filter schematic diagram, wherein 7 be diafiltration pond body, 8 be filter, and 9 be the second draining pump, and 10 be second row
Water pipe, 11 be the second water inlet pipe.
Fig. 5 is SBR biochemical treatment tank schematic diagram, wherein 12 be SBR biochemical treatment pond body, 13 be the 4th water inlet pipe, and 14 are
Micro-pore aeration pipeline, 15 be air blower, and 16 be the second blender, and 17 be water decanter, and 18 be outlet conduit, and 19 be sludge pump, 20
For sludge pipe, 21- third water inlet pipe.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Embodiment 1:
A kind of device improving Nitrogen removal effect using piggery wastewater interior carbon source, the device include ultrasonic alkaline hydrolysis processing
Pond A, continuous filter B and SBR biochemical treatment tank C；
The ultrasound alkaline hydrolysis processing pond A includes that ultrasonic alkaline hydrolysis treatment tank body 1 and Vltrasonic device 2, the Vltrasonic device 2 are arranged
In the top of ultrasonic alkaline hydrolysis treatment tank body 1；The bottom of the ultrasound alkaline hydrolysis treatment tank body 1 is provided with the first blender 5；It is described super
It is provided with the first water inlet pipe 6 above 1 side of sound alkaline hydrolysis treatment tank body, is provided with below ultrasonic alkaline hydrolysis treatment tank body side
One drainpipe 4；
The continuous filter B includes diafiltration pond body 7, and the middle part of the diafiltration pond body 7 is provided with filter 8；The continuous filter
It is provided with the second water inlet pipe 11 above 7 side of body, is percolated below body side and is provided with the second drainpipe 10；
The SBR biochemical treatment tank C includes SBR biochemistry pond body 12；The second stirring is provided in the SBR biochemistry pond body 12
Device 16 and water decanter 17 are provided with micro-pore aeration pipeline 14 below second blender 16；The top of the SBR biochemistry pond body 23 is set
It is equipped with third water inlet pipe 21, the 4th water inlet pipe 13 and outlet conduit 18 are provided with above 12 side of SBR biochemistry pond body, SBR is raw
Change and be provided with sludge pipe 20 below 12 side of pond body, sludge pipe 20 is connected with sludge pump 19；
The first drainpipe 4 of ultrasonic alkaline hydrolysis processing pond A is connected with the second water inlet pipe 11 of continuous filter with pipeline, is set on pipeline
Set the first draining pump 3；Second drainpipe 10 of continuous filter is connected with the third water inlet pipe 21 of SBR biochemical treatment tank with pipeline, pipe
Second draining pump 9 is set on road.
The micro-pore aeration pipeline 14 is connected with air blower 15.
Embodiment 2:
This laboratory use device described in embodiment 1, to Wastewater from Pig Farm processing novel pig manure carbon source preparation and its
Using being simulated.
1, the pig manure of TS=8% (as material concentration is 8%) is pumped into ultrasonic alkaline hydrolysis processing pond from the first water inlet pipe,
Pig manure is uniformly mixed using the first blender, is then turned on Vltrasonic device, Vltrasonic device uses LW92-III type supersonic cell
Crusher (China, Shanghai), frequency are 20~25KHz, and maximum power 1000W, luffing shank diameter is 12mm, ultrasonic pulse
It is set as opening for 3 seconds, close within 3 seconds.It is increased to control pig manure temperature in ultrasonic procedure, using cooling bath, sludge during experiment
Temperature be no more than 30 DEG C.10mm~20mm under should putting amplitude transformer to liquid when ultrasonic, and by the way that 20%NaOH is added dropwise to adjust
PH in reaction system.Setting acoustic density is 1000WL-1, ultrasonic time 40min, pH=11.By resulting ultrasonic alkali
Treated that mixed liquor is pumped into continuous filter from the second water inlet pipe for solution, is filtered by filter, filtrate as pig manure carbon source,
Filter residue then manually shovels out after desiccation；
2, the anaerobic effluent of 4.5L is passed through in SBR biochemical treatment tank, the physicochemical property of anaerobic digestion solution is shown in Table 1.
Above-mentioned gained pig manure carbon source is pumped into SBR biochemical treatment tank from third water inlet pipe as interior carbon source.The method of operation of SBR
Are as follows: 22d early period is carbon source mode of not adding, and later period 19d is addition carbon source mode；The cycle of operation is aeration 16h, stirs 6h, quiet
/ draining/2h of intaking is set, for 24 hours a cycle, hydraulic detention time 3d is controlled using peristaltic pump and intake, and aeration phase controls water
Body DO is in 1-2mgL-1, spoil disposal is primary within 3 days.The additive amount of pig manure carbon source is 1.78%, utilizes wriggling after aeration phase stopping
Pump is added in sbr reactor device.
3, SBR is after continuous operation 41d, NH in reactor3-N、NO2-N、NO3- N and TN is before and after adding pig manure carbon source
Situation of change is as shown in Figure 1.After adding pig manure carbon source, the water outlet TN of reactor is 40.11mgL-1, TN removal rate never adds
Add carbon source has been increased to 72.29% less than 10%；Denitrification rate reaches 124.16%, and while being not added with carbon source averagely only has
37.09%, addition pig manure carbon source, which will be not added with, is higher by 87.07 points；Denitrification is very abundant, and denitrification effect is obvious, and phase
To reducing capital construction and operating cost.Meanwhile the final outflow water COD for adding pig manure carbon source is 297.35mgL-1, it is discharged NH3-N
For 34.74mgL-1, water outlet TP is 1.14mgL-1, reached " livestock culture industry pollutant emission standard " (GB
18596-2001) discharge standard requires (COD 400mgL-1、NH3-N 80mg·L-1、TP 8mg·L-1)。
1 anaerobic digestion solution water quality parameter of table
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (7)
1. a kind of device for improving Nitrogen removal effect using piggery wastewater interior carbon source, it is characterised in that: the device includes super
Sound alkaline hydrolysis processing pond, continuous filter and SBR biochemical treatment tank；
The ultrasound alkaline hydrolysis processing pond includes ultrasonic alkaline hydrolysis treatment tank body and Vltrasonic device, and the Vltrasonic device is arranged in ultrasonic alkali
Solve the top for the treatment of tank body；The bottom of the ultrasound alkaline hydrolysis treatment tank body is provided with the first blender；The ultrasound alkaline hydrolysis processing
The first water inlet pipe is provided with above body side, ultrasonic alkaline hydrolysis treatment tank body is provided with the first drainpipe below side；
The continuous filter includes diafiltration pond body, is provided with filter in the middle part of the diafiltration pond body；The diafiltration body side
Top is provided with the second water inlet pipe, is percolated below body side and is provided with the second drainpipe；
The SBR biochemical treatment tank includes SBR biochemistry pond body；It is provided with the second blender in the SBR biochemistry pool body and strains water
Device, the second blender lower section are provided with micro-pore aeration pipeline；Third water inlet pipe, SBR are provided at the top of the SBR biochemistry pond body
It is provided with the 4th water inlet pipe and outlet conduit above biochemical body side, is provided with spoil disposal below SBR biochemistry body side
Pipe, sludge pipe are connected with sludge pump；
First drainpipe of ultrasonic alkaline hydrolysis processing pond is connected with the second water inlet pipe of continuous filter with pipeline, and first row is arranged on pipeline
Water pump；Second drainpipe of continuous filter is connected with the third water inlet pipe of SBR biochemical treatment tank with pipeline, and second row is arranged on pipeline
Water pump.
2. a kind of device for improving Nitrogen removal effect using piggery wastewater interior carbon source according to claim 1, special
Sign is: the micro-pore aeration pipeline is connected with air blower.
3. a kind of side for carrying out improving Nitrogen removal effect using piggery wastewater interior carbon source using device described in claim 1
Method, it is characterised in that prepare pig manure carbon source and subsequent SBR biochemical treatment denitrification effect including ultrasonic alkaline hydrolysis processing, specifically include with
Lower operating procedure:
(1) pig manure that material concentration is 8% is pumped into ultrasonic alkaline hydrolysis processing pond from the first water inlet pipe, is passed through under stirring
Vltrasonic device and the artificial lye that adds are to the ultrasonic alkaline hydrolysis Combined Treatment of pig manure progress；
(2) the resulting ultrasonic alkaline hydrolysis of step (1) treated mixed liquor is pumped into continuous filter from the second water inlet pipe, passes through filtering
Device is filtered, and as pig manure carbon source, filter residue then manually shovels out after desiccation filtrate；
(3) the resulting pig manure carbon source of step (2) is pumped into SBR biochemical treatment tank from third water inlet pipe as interior carbon source, is detested
Oxygen digestive juice is pumped into SBR biochemical treatment tank from the 4th water inlet pipe, is aerated by micro-pore aeration pipeline, and the second stirring is utilized
Device is stirred, and water outlet is discharged by outlet conduit, and sludge is discharged by sludge pipe.
4. according to the method described in claim 3, it is characterized by: step (1) lye be NaOH and water with 1:5 mixing and
At sodium hydroxide solution.
5. according to the method described in claim 3, it is characterized by: step (1) the ultrasonic alkaline hydrolysis Combined Treatment is using following
Condition: ultrasonic acoustic density is 1000WL-1, ultrasonic time 40min, pH=11.
6. according to the method described in claim 3, it is characterized by: in step (3) the SBR biochemical treatment tank, the cycle of operation
To be aerated 16h, 6h is stirred, then passes through standing, draining and the total 2h of water inlet, for 24 hours a cycle, hydraulic detention time 3d；Institute
The additive amount for stating pig manure carbon source is that SBR biochemical treatment tank always intakes the 1.78% of volume, and the addition period is stopped in aeration phase
Afterwards.
7. according to the method described in claim 3, it is characterized by: being reached after step (3) the SBR biochemical treatment tank operation 41d
Mark can discharge.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113578935A (en) * | 2021-08-13 | 2021-11-02 | 中国天楹股份有限公司 | Resourceful treatment method for kitchen waste |
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| CN105330114A (en) * | 2015-10-22 | 2016-02-17 | 天津大学 | Pretreatment method of promoting anaerobic fermentation of high-density sludge through alkaline-hydrolysis coupling ultrasonic processing |
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| CN113578935A (en) * | 2021-08-13 | 2021-11-02 | 中国天楹股份有限公司 | Resourceful treatment method for kitchen waste |
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