CN108358310A - A kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water - Google Patents
A kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water Download PDFInfo
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- CN108358310A CN108358310A CN201810017781.3A CN201810017781A CN108358310A CN 108358310 A CN108358310 A CN 108358310A CN 201810017781 A CN201810017781 A CN 201810017781A CN 108358310 A CN108358310 A CN 108358310A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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Abstract
The invention discloses a kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water, using EGSB anaerobic techniques, artificial stone's waste water is handled with the beer waste water anaerobic sludge of domestication, flow of inlet water is 0.055L/h, hydraulic detention time HRT is for 24 hours, temperature is 35 DEG C, pH value 7.0, reflux ratio 1:1, influent COD 2000mg/L, organic matter sludges load are 1.53kgCOD/kgd, and COD removal rates are 60% under conditions of upflow velocity is 0.005m/h.It show that the experimental result of EGSB anaerobic biodegradations can be used in artificial stone's waste water, reduces processing energy consumption.
Description
Technical field
The invention belongs to industrial waste water treatments, are related to a kind of EGSB anaerobic organisms of artificial stone's processing waste water
Processing method.
Background technology
There are three aspects for main pollutant sources in artificial stone's processing waste water：(1) slabstone is after cutting machine is cut,
A large amount of leftover pieces, steel sand and the big particulate matter generated；(2) a large amount of mountain flours that cutting and slabstone edging generate；(3) it mends plate, add
The residual of the auxiliary materials such as resin glue, curing agent used in fixed network and manufacturing procedure.Slabstone cuts a large amount of with edging generation
Mountain flour can suspend in water with the flushing of water, and this kind of particulate matter is in water suspension and colloidal state, and dispersion degree is high, in water
In be difficult precipitation.Suspension content in usual stone wastewater is up to 1000mg/L or more.Mountain flour becomes the sector waste water
One of major pollutants.In addition, the auxiliary materials such as the coolant used in stone machining processing, resin glue and curing agent is residual
Staying makes waste water contain a certain amount of organic matter.Wherein coolant, resin glue main component be Resin Acid and its saponified, no
Saturated fatty acid and its saponified, lignin class and its degradation product etc., and the main component of curing agent with resinae (epoxy resin,
Alkyd resin and the export-oriented resin of son etc.) based on.It can be seen that artificial stone's processing waste water has water big, and major pollutants
For SS and COD the characteristics of.
The main processing method of stone material waste water is only to remove part SS with coagulant sedimentation at present, and many small factories are even because of warp
Reason of helping is without any processing just by direct discharging of waste water, and serious harm is caused to environment.Therefore, find it is a kind of it is economical,
Environmentally friendly, high treating effect treatment process, is the key that current Ornamental Stone Industry environmental issue.
Most of stone material manufacturer is generally by the way of natural sedimentation or the mode of coagulating sedimentation removes oil removal
(SS), simple for process, but problem arises in that COD removal rates it is not high or almost without removal direct emission enter water
Body.
Invention content
The purpose of the present invention is to provide a kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water, will simulate
EGSB anaerobic techniques are removed the COD of stone material waste water, to reduce processing cost.
Its specific technical solution is：
A kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water, include the following steps：
In EGSB reactors, artificial stone's waste water is handled with the beer waste water anaerobic sludge of domestication, flow of inlet water is
0.055L/h, hydraulic detention time HRT are that for 24 hours, temperature is 35 DEG C, pH value 7.0, reflux ratio 1:1, influent COD is
2000mg/L, organic matter sludges load are 1.53kgCOD/kgd, and upflow velocity is COD removal rates under conditions of 0.005m/h
It is 60%.
Further, the EGSB reactors include inlet tank, intake pump, constant water bath box, temperature control warm water pump, reflux
Bucket, the reflux gentle body collection device of water pump.
Compared with prior art, beneficial effects of the present invention are：
Technical scheme of the present invention EGSB Anaerobic treatment techniques can be biodegradable to artificial stone's wastewater fraction, waterpower
Under conditions of residence time is for 24 hours, COD sludge loadings are 0.76kgCOD/kg ﹒ d, 60% or so, water outlet COD is COD removal rates
830mg/L or so.It can be seen that artificial stone's waste water can take this EGSB Anaerobic treatment technique to handle it, drop
Reduction process energy consumption.
Description of the drawings
Fig. 1 is the structural schematic diagram of micro- oxygen anaerobism EGSB reactors；
Fig. 2 is EGSB domestication results；
Fig. 3 is EGSB operation results.
Specific implementation mode
Technical scheme of the present invention is described in more detail in the following with reference to the drawings and specific embodiments.
1, wastewater source and property
Waste water used in present invention research is derived from Guangxi Li Shengshi industry Co., Ltd, which there is organic matter, suspended matter to contain
Amount is high, and the characteristics of suspended matter difficulty free settling.Specific nature such as table 1：
1 artificial stone's wastewater property of table
By table as it can be seen that the waste water has COD high, the feature of SS high, and BOD5/COD=0.41, have certain biology can
Degradability.
2, materials and methods
When handling different waste water using different seed sludges, sludge acclimatization is essential step, has been tamed
Sludge plays a crucial role the startup and operation of anaerobic reactor.Therefore, the present invention includes two parts：1. first
Granule sludge is tamed using the simulation molasses alcohol waste water manually prepared；2. then starting EGSB using practical artificial stone's waste water
Reactor is run under anaerobic, and determines the optimal conditions of reactor operation.
Main test event and method are shown in Table 2 in present invention research.
2 main test event of table and method
COD measures new II type microwave applicators of instrument board ECH-；PH value is measured with Sai Duolisi UB-7 type pH instrument.
The anaerobism EGSB reactors that the present invention uses are customization, as shown in Figure 1.
Main body EGSB reactors are the capital equipments of the present invention, and EGSB reactors are made of transparent organic glass, corrosion resistant
Erosion, volume 1.69L.The degradation of organic matter, the generation of methane are all completed at the same time wherein.
Inlet tank 1：Simulated wastewater and dilution practical molasses-spirit are prepared during improved EGSB reactor start-ups
Waste water, while adjusting water inlet pH value.
Intake pump 2：For the waste water in inlet bucket to be quantitatively input into EGSB reactors.
Constant water bath box 3, constant temperature water pump 4, temperature controller 5：By in constant temperature water pump 4 constantly cycle insulating layer 11
Water heats the water in constant water bath box 3 by temperature controller 5, to maintain the temperature in reactor in (35 ± 1)
℃.5 lower section of temperature controller is equipped with temperature sensor 12 and heater 13.
Flow back bucket 6, reflux water pump 7：EGSB reactors water part is back in reflux bucket, then is given up through the water pump that flows back
Water is input in EGSB reactors.
Sludge blanket 8：It is enriched with and inhabites anaerobic organism strain.
Gas collector 9：The gas that three phase separator 10 detaches is collected, then is absorbed by water.
3. experimental program and result
3.1 sludge acclimatization
The sludge that the present invention is inoculated with is taken from the UASB reactors of Guilin Li Quan beer Co., Ltd brewery wastewater treatment
Anaerobic sludge.Inoculum concentration is the 50% of reaction zone volume, i.e., inoculum concentration is 0.85L.Anaerobic sludge color and luster is pitch-black, is in thin paste,
Its MLSS is 1.31g/L.
According to the COD value of waste water, simulated wastewater is prepared with glucose.Meanwhile in COD: N: P=200: 5: 1 ratio to
Ammonium chloride and dipotassium hydrogen phosphate are added in water, while adding some micro-, a concentration of 1000-2000mg/L of water distribution COD,
(specific formula is shown in Table 3).To prevent waste water to be acidified, daily water distribution is primary, and a certain amount of sodium bicarbonate is added in waste water,
To adjust the water inlet pH value of simulated wastewater 7.0 or so.Sludge manually tame by water distribution, and initial inlet COD concentration is 1000mg/
L, is stepped up influent COD to 2000mg/L, stable operation one week after rate to be removed is more than 80%.
3 simulated wastewater ingredient of table
Note：All reagents are that analysis is pure.
3.1.1 the determination of parameter
(1) flow of inlet water
The flow of inlet water Q that reactor is started to start by the present invention is into fixing tentatively as 0.035L/h.
(2) reflux ratio
The reflux ratio that reactor starts to start is set to 1 by the present invention:1.
(3)HRT
Hydraulic detention time refers to mean residence time of the treatment sewage in reactor, that is, sewage and biology it is anti-
Answer the average reaction time of microbial action in device.According to the fixed flow of inlet water Q of the present invention into, reflux ratio and reactor
Volume V it can be learnt that.It is for 24 hours that reactor, which starts the HRT started,.
(4) temperature, pH value
One of an important factor for temperature, pH value are influence microbial growths, it is excessively high, too low to be all unfavorable for microorganism
Growth and breeding.
MPB (methanogen) is extremely sensitive to the pH value of growing environment, and optimum pH is 7.0~7.2 [6], temperature model
It is 25~60 DEG C to enclose, but can obtain higher digestive efficiency respectively at 35 DEG C and about 53 DEG C.Therefore, this research selects temperature
In (35 ± 1) DEG C or so, pH value 7.0 or so.
(5) upflow velocity
The cross-sectional area S of flow of inlet water according to the present invention, regurgitant volume and reactor dischargeable capacity is it can be learnt that initial
Upflow velocity V be 0.005m/h.
(6) sludge loading of organic matter
The organic matter sludges load that the present invention starts to start is about 0.76kgCOD/kgd.
3.1.2 sludge acclimatization experimental result
Sludge acclimatization result is shown in Fig. 2.As seen from the figure, after anaerobic sludge inoculation being entered reactor, first in lower dirt
When being tamed under mud load (0.76kgCOD/kgd), in originally 3d, the removal rate of COD is generally relatively low, is below 40%.This
It is primarily due to preceding 3d, microorganism is not suitable with the aquatic environment of simulated wastewater.In 5d after this, microorganism gradually adapts to
The aquatic environment of simulated wastewater, removal rate gradually rise immediately, and up to 90%.It is stepped up influent COD, only just increased one
Removal rate declines slightly within two days, immediately increases to 90%.Influent COD increases to 2000mg/L, sludge loading (1.53kgCOD/kg
D) removal rate is also stabilized in 90% or so, and water outlet COD is basically stable at 200mg/L or so, and domestication terminates.
The startup of 3.2 EGSB reactors
Experiment is derived from Guangxi Li Shengshi industry Co., Ltd with waste water, and supernatant is taken after clarification, according to demand uses raw water certainly
Water is diluted, and adjusts pH value of waste water 7.0 or so.Sludge after artificial distribution's domestication is first 1000mg/L with COD
The operation of dilution waste water, rate to be removed stablizes in higher level one week, then increases influent concentration.
EGSB reactors operating parameter still tames the parameter of stage running with granule sludge, i.e. flow of inlet water is 0.055L/
H, hydraulic detention time HRT are that for 24 hours, temperature is 35 DEG C, pH value 7.0, reflux ratio 1:1, influent COD 1000mg/L have
Machine object sludge loading is 0.76kgCOD/kgd, upflow velocity 0.005m/h.After reactor is stablized, flow of inlet water is kept not
Become, i.e. hydraulic detention time HRT is constant, and volumetric loading is improved by way of being stepped up influent concentration, increases by one per 7d
Secondary influent concentration, until COD concentration is about 2000mg/L.
Experimental result is shown in Fig. 3, as seen from the figure, will water inlet by the simulated wastewater manually prepared change into actual waste water with
Afterwards, the COD concentration of water outlet increases rapidly, and removal rate declines rapidly, by 90.09% original bust to 22.04.%；This can
Can be due to simulated wastewater and actual waste water difference, just incipient stage microbial activity is by prodigious inhibition, therefore
Microorganism could not degradation of organic substances.After continuing nearly one month, microorganism has gradually adapted to artificial stone's waste water, and with waste liquid
It continues into and gradual activity recovery, removal rate gradually rises to 50-60%, and removal rate is not further added by later.Reason is analyzed, it can
Can be waste water itself biodegradable it is general, biodegradable part has been removed, and remaining organic matter is not easy biology
Degradation.It is 26.35mg/L to take out water at this time and survey BOD5, and the biodegradable of water outlet is poor, and showing that microorganism has been degraded can
The organic matter of degradation part.
As influent concentration increases, i.e. the COD concentration meeting small range of the increase of sludge loading, water outlet increases, removal rate
It slightly reduces, the range floated every time is gradually reduced with the extension of time, and is gradually restored quickly, this shows instead
It answers activated sludge in device to adapt to artificial stone's waste water completely, while also indicating that the increased load of reactor institute is anti-at this time
In the range of answering device can bear, and capacity of resisting impact load is stronger.
When 60d, COD removal efficiency is stablized 60% or so, and aqueous concentration is in 1650mg/L or so.Water sludge interface at this time
High-visible, aerogenesis is normal, you can thinks that microorganism has adapted to the living environment of reactor, shows higher activity.
4, conclusion
EGSB Anaerobic treatment techniques can be biodegradable to artificial stone wastewater fraction, hydraulic detention time for 24 hours, COD
Under conditions of sludge loading is 0.76kgCOD/kg ﹒ d, for COD removal rates 60% or so, water outlet COD is 830mg/L or so.By
, as it can be seen that artificial stone's waste water can take this EGSB Anaerobic treatment technique to handle it, reduction handles energy consumption for this.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention is without being limited thereto, it is any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are each fallen in protection scope of the present invention.
Claims (2)
1. a kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water, which is characterized in that include the following steps：
In EGSB reactors, artificial stone's waste water, flow of inlet water 0.055L/ are handled with the beer waste water anaerobic sludge of domestication
H, hydraulic detention time HRT are that for 24 hours, temperature is 35 DEG C, pH value 7.0, reflux ratio 1:1, influent COD 2000mg/L have
Machine object sludge loading is 1.53kgCOD/kgd, and COD removal rates are 60% under conditions of upflow velocity is 0.005m/h.
2. the EGSB anaerobic bio-treated methods of artificial stone's processing waste water according to claim 1, which is characterized in that institute
It includes inlet tank, intake pump, constant water bath box, temperature control warm water pump, reflux bucket, the reflux gentle body of water pump to state EGSB reactors
Collection device.
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| CN201810017781.3A CN108358310A (en) | 2018-01-09 | 2018-01-09 | A kind of EGSB anaerobic bio-treated methods of artificial stone's processing waste water |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000263084A (en) * | 1999-03-16 | 2000-09-26 | Sumitomo Heavy Ind Ltd | Waste water treatment equipment and waste water treatment method |
| CN1583600A (en) * | 2004-05-28 | 2005-02-23 | 清华大学 | Method for preparing granular ammonia oxidative mud with anaerobic bacteria from mixed mud |
| CN101560017A (en) * | 2009-06-02 | 2009-10-21 | 哈尔滨工业大学 | Method for treating waste water by short-cut denitrification and desulfurization |
| CN205710080U (en) * | 2016-06-24 | 2016-11-23 | 刘丰周 | New and effective EGSB wastewater treatment equipment |
-
2018
- 2018-01-09 CN CN201810017781.3A patent/CN108358310A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000263084A (en) * | 1999-03-16 | 2000-09-26 | Sumitomo Heavy Ind Ltd | Waste water treatment equipment and waste water treatment method |
| CN1583600A (en) * | 2004-05-28 | 2005-02-23 | 清华大学 | Method for preparing granular ammonia oxidative mud with anaerobic bacteria from mixed mud |
| CN101560017A (en) * | 2009-06-02 | 2009-10-21 | 哈尔滨工业大学 | Method for treating waste water by short-cut denitrification and desulfurization |
| CN205710080U (en) * | 2016-06-24 | 2016-11-23 | 刘丰周 | New and effective EGSB wastewater treatment equipment |
Non-Patent Citations (2)
| Title |
|---|
| 刘建伟等: "《污水生物处理新技术》", 30 September 2016, 北京：中国建材工业出版社 * |
| 郭晓燕等: "EGSB反应器处理米酒废水的启动方法研究", 《环境污染与防治》 * |
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Application publication date: 20180803 |