CN104150608B - A kind of high-salt wastewater biochemical processing process - Google Patents
A kind of high-salt wastewater biochemical processing process Download PDFInfo
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- CN104150608B CN104150608B CN201410372638.8A CN201410372638A CN104150608B CN 104150608 B CN104150608 B CN 104150608B CN 201410372638 A CN201410372638 A CN 201410372638A CN 104150608 B CN104150608 B CN 104150608B
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Abstract
The invention discloses a kind of high-salt wastewater biochemical processing process.In order to alleviate a process difficult problem for high salinity waste water with lower working cost and gross investment, described high-salt wastewater biochemical processing process comprises the steps: 1) obtain Facultative Halophiles and to be attached in reactor on filler; 2) simulated wastewater is configured; 3) Facultative Halophiles is tamed; Simulated wastewater and high-salt wastewater are hybridly prepared into multiple domestication waste water by different ratios, in reactor start-up process, Facultative Halophiles is tamed through multiple domestication waste water successively according to simulated wastewater content order from high to low in domestication waste water, shortens the reactor start-up time; 4) Facultative Halophiles after domestication is directly processed high-salt wastewater.The present invention passes through domestication and cultivates, and makes the particularization of Facultative Halophiles high number, flora, degraded high efficiency in conjunction with biological doubling technology, thus the organic pollutant in effective degradation water.
Description
Technical field
The present invention relates to a kind of high-salt wastewater biochemical processing process, belong to field of industrial waste water treatment.
Background technology
Freshwater resources crises problem, has become " bottleneck " of restriction China's Coastal Areas economy and social development.Solve coastland Freshwater resources crisis, very urgent.Meanwhile, along with industrial expansion, high salinity discharged volume of industrial waste water is also increasing sharply.High salinity waste water belongs to one of extremely unmanageable kind of waste water.The treatment process adopted for high-concentration waste water at present has: electrolytic process, membrane separation process, burning method or deep well injection method, but these methods are difficult to because processing costs is high promote in practice.Biological treatment is one of the most frequently used method of current waste water, and it has the feature such as applied range, strong adaptability.Inorganic salts plays promotion enzyme reaction in microorganism growth process, maintains the vital role of membrane equilibrium and adjustment osmotic pressure.But salt concn is too high, restraining effect can be produced to microbial growth.Therefore, in the biochemical treatment containing high-salt wastewater, traditional biological facture receives and greatly suppresses.Main suppression reason is that high osmotic pressure makes general microorganism be difficult to survive in the environment of high salt concentration, and simultaneously high Cl-concentration is to the toxic effect of cell, and high salinity causes solution density to increase, and active sludge easily floats and to run off with water outlet.
Therefore, the biological treatment of usually conduct high slat-containing wastewater needs to dilute, and under low salt concn, (salt concn is less than 1%) operation, causes the waste of water resources, and treatment facility is huge, investment increases, and working cost improves.Along with the day of water resources is becoming tight, the enforcement of the every regulation of water conservation that country puts into effect and charge measure, brings economical load to the enterprise of high slat-containing wastewater process.
Summary of the invention
In order to alleviate a process difficult problem for high salinity waste water with lower working cost and gross investment, the present invention aims to provide a kind of high-salt wastewater biochemical processing process, this technique is not suitable with the feature of highly-saline living environment according to common micro-organisms, fetch mud by the bioid factory water port producing high-salt wastewater at certain and obtain adaptable Facultative Halophiles, and cultivated by domestication, the particularization of Facultative Halophiles high number, flora, degraded high efficiency is made in conjunction with biological doubling technology, thus the organic pollutant in effective degradation water.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of high-salt wastewater biochemical processing process, comprises the steps:
1) obtain Facultative Halophiles and be attached on the filler in reactor;
2) configure simulated wastewater, the component of simulated wastewater is glucose, sodium phosphate dodecahydrate, urea, water and sodium-chlor; Wherein add glucose 1.1g ~ 1.35g, sodium phosphate dodecahydrate 0.14g ~ 1.7g in every premium on currency, urea 0.05 ~ 0.08g, then adds sodium-chlor, makes the salinity of simulated wastewater be 3% ~ 5%;
3) Facultative Halophiles is tamed; Simulated wastewater and high-salt wastewater are hybridly prepared into multiple domestication waste water by different ratios, in reactor start-up process, Facultative Halophiles are tamed through multiple domestication waste water successively according to simulated wastewater content order from high to low in domestication waste water;
4) Facultative Halophiles after domestication is directly processed high-salt wastewater.
Described Facultative Halophiles is preferably Erysipelothrix
cVCC1188, Bacterium lacticum
cICC2032813830.
Be below the technical scheme of further improvement of the present invention:
Feature of the present invention is also in described simulated wastewater, and the dosage of often liter of aqueous humor glucose, sodium phosphate dodecahydrate, urea is 1.2376g, 0.159g, 0.062g respectively.
Feature of the present invention is also that in step 1), Facultative Halophiles is taken from the bed mud of high-salt wastewater water port, and is obtained by separation and purification means.
Feature of the present invention is also in step 4), is added by Facultative Halophiles and processes high-salt wastewater after enrichment in biological micro-iodide device, is provided with to the aerating apparatus of oxygen supply of water body and the filler being convenient to Facultative Halophiles attachment in this biological micro-iodide device.Further, described filler is made up of soft-filler and semi soft packing.Further, described aerating apparatus is aeration plate, and aeration rate makes water body oxygen level be 1mg/L ~ 3mg/L.
Feature of the present invention is also in step 3), simulated wastewater and high-salt wastewater are hybridly prepared into four kinds of domestication waste water by different ratios: the first to be the volume ratio of simulated wastewater and high-salt wastewater be 4:1(namely: simulated wastewater volume: high-salt wastewater volume=4:1), the second to be the volume ratio of simulated wastewater and high-salt wastewater be 3:2(is namely: simulated wastewater volume: high-salt wastewater volume=3:2), the third to be the volume ratio of simulated wastewater and high-salt wastewater be 2:3(is namely: simulated wastewater volume: high-salt wastewater volume=2:3), 4th kind of to be the volume ratio of simulated wastewater and high-salt wastewater be 1:4(is namely: simulated wastewater volume: high-salt wastewater volume=1:4), described Facultative Halophiles successively through the first, the second, the third and the 4th kind of domestication waste water tames, direct again after having tamed high-salt wastewater to be processed.Further, adopt in the first domestication waste water and tame Facultative Halophiles after 4 ~ 6 days, adopt in the second domestication waste water and tame 5 ~ 7 days, adopt afterwards in the third domestication waste water and tame 7 ~ 9 days, finally adopt in the 4th kind of domestication waste water and tame 7 ~ 9 days.
Do not arrange filler in bio-reactor due to the process high salinity waste water of routine, main air-lift device and the separator for mud and water of relying on retains mud, but still carries a large amount of mud secretly in water outlet.Biological micro-iodide device of the present invention utilizes the filler hung, and allows microorganism, particularly Facultative Halophiles be attached on filler, is equivalent to fix Facultative Halophiles, avoid race mud.Wherein, the biology multiplication of biological micro-iodide device refers to that the amount for the treatment of the microorganism of pollutent is more much bigger than the amount of traditional activated sludge process, the amount of such as traditional activated sludge process microorganism, and namely MVSS is 3 ~ 5g/L, then biological doubling technology can reach 7 ~ 8g/L, even 10g/L.
A kind of high-salt wastewater biochemical treatment system, as illustrated in fig. 1 and 2, comprise and be connected in series connected oxidizing reaction pond 7, micro-electrolysis reaction pond 1, coagulative precipitation tank 2, tube settler 3, modified pond 4, biological micro-iodide device 5, settling tank 6 and clean water basin 8 successively, filler is wherein set in biological micro-iodide device 5 and is provided for the success of Facultative Halophiles biofilm.Thus, after high-salt wastewater enters oxidizing reaction pond 7, successively through the process in each pond, finally deliver to the rear qualified discharge of clean water basin 8.
Principle of work of the present invention: add a certain amount of simulated wastewater in biological micro-iodide device, is provided with the combined stuffing be made up of soft-filler and semi soft packing in biological micro-iodide device.And the filler of energy enriched microorganism is set in the reactor, then utilize aeration plate to carry out suitable aeration to waste water, and add salt tolerant bacterial classification in the reactor, carry out biofilm cultivation.Adopt the ratio of progressively adding actual high-salt wastewater until the mode of 100% starts reactor subsequently, after reactor is stable, control aeration rate and be about 1 ~ 3mg/L, experimentally gained volumetric loading is about 4.5kgCOD/ (m
3d).
Bacterial classification in this experiment is all taken from the bed mud at water port place of bioid factory, drawn by separation screening, it is applied in the middle of biological micro-iodide device again by autogamy nutritive medium enrichment culture and processes high salinity waste water, and increase quantity and the concentration process high salinity waste water of Facultative Halophiles by attachment filler.
Compared with prior art, the invention has the beneficial effects as follows: the present invention cultivates Facultative Halophiles by domestication, and make the particularization of Facultative Halophiles high number, flora, degraded high efficiency in conjunction with biological doubling technology, thus the organic pollutant effectively degraded in waste water, biochemical industry plant tail water qualified discharge is realized, especially the qualified discharge of COD, ammonia nitrogen, total phosphorus index in relatively inexpensive, efficient, stable mode.
The running cost of current pilot scale flow process:
1), existing vacuum low-pressure evaporation measure: low pressure evaporation concentration---water of condensation enters biochemical system process: water running expense per ton about 50 yuan, does not comprise water of condensation biochemical treatment cost and crystal processing cost;
2), existing adsorption treatment scheme (charcoal absorption-biochemistry): water running expense per ton about 40 ~ 50 yuan, containing biological activated carbon replacing, does not contain the useless processing costs of danger.Danger is useless to be referred to and discarded has adsorbed the gac of toxic substance.
And utilize treatment process of the present invention, pilot scale adopts light electrolysis-biochemical process, and light electrolysis is the pretreatment stage for the treatment of scheme, and the processing cost of water per ton can control at about 30 yuan, the sewage work of 40 tons of/day scales calculates, and within 1 year, can save cost 29.2 ten thousand yuan.
Below in conjunction with drawings and Examples, the present invention is further elaborated.
Accompanying drawing explanation
Fig. 1 is the process flow sheet (left-half) of one embodiment of the invention;
Fig. 2 is the process flow sheet (right half part) of one embodiment of the invention.
In the drawings
1-micro-electrolysis reaction pond; 2-coagulative precipitation tank; 3-tube settler; The modified pond of 4-; The biological micro-iodide device of 5-; 6-settling tank; 7-oxidizing reaction pond; 8-clean water basin.
Embodiment
The tail water water quality of certain biochemical industry company limited treatment facility is: pH:7.0 ~ 7.5, COD:4500 ~ 4800mg/L, saltiness about 3.5 ~ 6.0%, BOD:600mg/L, phenol about 100mg/L.
In the bed mud of the first direct bioid factory water port at generation high-salt wastewater, separation screening obtains Facultative Halophiles, and utilize the filler in reactor to make the success of Facultative Halophiles biofilm, wherein, Facultative Halophiles is Erysipelothrix
cvcc1188or Bacterium lacticum
cICC2032813830.
Then configure simulated wastewater, the component of simulated wastewater is glucose, sodium phosphate dodecahydrate, urea, water and sodium-chlor; Wherein add glucose 1.2376g, sodium phosphate dodecahydrate 0.159g in every premium on currency, urea 0.062g, then adds sodium-chlor, makes the salinity of simulated wastewater be 3% ~ 5%;
Tame Facultative Halophiles more afterwards; Simulated wastewater and high-salt wastewater are hybridly prepared into multiple domestication waste water by different ratios, in reactor start-up process, Facultative Halophiles is tamed through multiple domestication waste water successively according to simulated wastewater content order from high to low in domestication waste water, to shorten the reactor start-up time, concrete domestication process is:
1) simulated wastewater of 80% and the actual waste water of 20% is adopted to test, the water quality of composite waste is: pH:6.7 ~ 7.3, COD:907 ~ 1023mg/L, saltiness 2.0 ~ 2.3%, phenol 13 ~ 19mg/L, the treatment effect comparatively stable (running 5 days) of reactor, the clearance of phenol and COD is respectively 85% and 80%.
2) simulated wastewater of 40% and the actual waste water of 60% is adopted to test, the water quality of composite waste is: pH:7.1 ~ 7.4, COD:1900 ~ 2012mg/L, saltiness 2.8 ~ 3.0%, phenol 33 ~ 35mg/L, reactor runs 6 days aftertreatment effects and reaches stable, and phenol is almost all removed, and the clearance of COD is respectively 88%.
3) simulated wastewater of 60% and the actual waste water of 40% is adopted to test, the water quality of composite waste is: pH:7.3 ~ 7.6, COD:2533 ~ 2750mg/L, saltiness 3.2 ~ 3.5%, phenol 50 ~ 60mg/L, reactor runs 8 days aftertreatment effects and reaches stable, and phenol is almost all removed, and the clearance of COD is respectively 84%.
4) simulated wastewater of 20% and the actual waste water of 80% is adopted to test, the water quality of composite waste is: pH:7.6 ~ 7.9, COD:4478 ~ 4772mg/L, saltiness 3.9 ~ 4.1%, phenol 80 ~ 90mg/L, reactor runs 8 days aftertreatment effects and reaches stable, and phenol is almost all removed, and the clearance of COD is respectively 86%.
After Facultative Halophiles has been tamed, directly actual high-salt wastewater is processed.
5) the 28th day water inlet actual waste water, run and reach steady state after 9 days, phenol clearance stabilizes to 80% by the clearance that 80% stabilizes to 98%, COD by 68%, shows that this system has good anti impulsion load ability.The phenol of water outlet after system stable operation is 1.83mg/L, COD is 946mg/L, achieves good removal effect.
The content that above-described embodiment is illustrated should be understood to these embodiments only for being illustrated more clearly in the present invention, and be not used in and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Claims (7)
1. a high-salt wastewater biochemical processing process, is characterized in that, comprises the steps:
1) obtain Facultative Halophiles, and be attached on the filler in reactor, Facultative Halophiles is taken from the bed mud of high-salt wastewater water port, and is obtained by separation and purification means;
2) configure simulated wastewater, the component of simulated wastewater is glucose, sodium phosphate dodecahydrate, urea, water and sodium-chlor; Wherein add glucose 1.1g ~ 1.35g, sodium phosphate dodecahydrate 0.14g ~ 1.7g in every premium on currency, urea 0.05 ~ 0.08g, then adds sodium-chlor, makes the salinity of simulated wastewater be 3% ~ 5%;
3) Facultative Halophiles is tamed; Simulated wastewater and high-salt wastewater are hybridly prepared into multiple domestication waste water by different ratios, in reactor start-up process, Facultative Halophiles are tamed through multiple domestication waste water successively according to simulated wastewater content order from high to low in domestication waste water;
4) Facultative Halophiles after utilizing domestication directly processes high-salt wastewater.
2. high-salt wastewater biochemical processing process according to claim 1, is characterized in that, in described simulated wastewater, the dosage of often liter of aqueous humor glucose, sodium phosphate dodecahydrate, urea is 1.2376g, 0.159g, 0.062g respectively.
3. high-salt wastewater biochemical processing process according to claim 1, it is characterized in that, in step 4), Facultative Halophiles is added and after enrichment, high-salt wastewater is processed in biological micro-iodide device, be provided with in this biological micro-iodide device with give oxygen supply of water body aerating apparatus and be convenient to Facultative Halophiles attachment filler.
4. high-salt wastewater biochemical processing process according to claim 3, is characterized in that, described filler is made up of soft-filler and semi soft packing.
5. the high-salt wastewater biochemical processing process according to claim 3 or 4, is characterized in that, described aerating apparatus is aeration plate, and aeration rate makes water body oxygen level be 1mg/L ~ 3mg/L.
6. according to the high-salt wastewater biochemical processing process one of claim 1 ~ 4 Suo Shu, it is characterized in that, in step 3), simulated wastewater and high-salt wastewater are hybridly prepared into four kinds of domestication waste water by different ratios: the first is the volume ratio of simulated wastewater and high-salt wastewater is 4:1, the second is the volume ratio of simulated wastewater and high-salt wastewater is 3:2, the third is the volume ratio of simulated wastewater and high-salt wastewater is 2:3, and the 4th kind is the volume ratio of simulated wastewater and high-salt wastewater is 1:4; Described Facultative Halophiles successively through the first, the second, the third and the 4th kind of domestication waste water tames, direct again after having tamed high-salt wastewater to be processed.
7. high-salt wastewater biochemical processing process according to claim 6, it is characterized in that, Facultative Halophiles is tamed after 4 ~ 6 days in the first domestication waste water, adopt in the second domestication waste water and tame 5 ~ 7 days, adopt afterwards in the third domestication waste water and tame 7 ~ 9 days, finally adopt in the 4th kind of domestication waste water and tame 7 ~ 9 days.
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| CN105036312A (en) * | 2015-09-14 | 2015-11-11 | 中蓝连海设计研究院 | Starting method for high-salinity wastewater MBBR treatment system |
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| CN107792936A (en) * | 2017-12-11 | 2018-03-13 | 河南省正大环境科技咨询工程有限公司 | A kind of biological contact oxidation pond of easy to be filmed |
| CN111943361B (en) * | 2019-05-17 | 2023-11-10 | 华东理工大学 | Treatment system and method for degrading fracturing flowback fluid organic matters by salt-tolerant bacteria |
| CN111471614A (en) * | 2020-03-26 | 2020-07-31 | 戴商 | Salt-tolerant strain and biodegradation method for high-salt chemical wastewater |
| CN114162976A (en) * | 2021-12-10 | 2022-03-11 | 上海问鼎环保科技有限公司 | Microbial filler attached with halotolerant bacteria and preparation method and application thereof |
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