CN1318323C - Method for highly efficient treatment of yellow ginger-processing wastewater and uses thereof - Google Patents
Method for highly efficient treatment of yellow ginger-processing wastewater and uses thereof Download PDFInfo
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- CN1318323C CN1318323C CNB200510132060XA CN200510132060A CN1318323C CN 1318323 C CN1318323 C CN 1318323C CN B200510132060X A CNB200510132060X A CN B200510132060XA CN 200510132060 A CN200510132060 A CN 200510132060A CN 1318323 C CN1318323 C CN 1318323C
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Abstract
The present invention provides a method for high-efficient treatment of yellow ginger processing wastewater and an application thereof. The present invention uses the treating method of diphasic anaerobic and an immobilized microorganism-aerobic bacteria filter (G-BAF), wherein the yellow ginger processing wastewater enters a hydrolysis acidification reactor after the pH of the yellow ginger processing wastewater is adjusted to neutral, and the yellow ginger processing wastewater enters a methane fermenting reactor after desulfured in a reification or biochemistry way; the effluent water enters a secondary G-BAF reactor for further treatment, and reaches the standards for discharging. The present invention has the advantages that the negative effect containing lots of SO4 <2-> in the raw water is eliminated, the toxicity generated by sulfate reduction is avoided so as to realize the utilization for changing the waste into resources, recover energy resources, and reduce treatment cost, and the yellow ginger processing wastewater reaches the standard for discharging. The application of the present invention is suitable for treating the yellow ginger processing wastewater, and can also be used for treating the high-concentrated organic wastewater containing sulfate.
Description
Technical field
The invention belongs to the Industrial Wastewater Treatment field, exactly relate to treatment process of yellow ginger processing waste water and uses thereof.
Background technology
Yellow ginger is a kind of medicinal plant, can extract saponin and be used for the synthetic of multiple medicine.In the yellow ginger course of processing, 1 ton of saponin of every production needs cadmium yellow ginger 130-180 ton, and 98% sulfuric acid 7-8 ton produces waste water 400-500 ton.Extract saponin and produce from yellow ginger, contaminated wastewater is serious, mainly contains following characteristics: (1) biodegradability is poor: the BOD/COD value is about 0.27; (2) sugar part content height, it is about 2% to contain sugar, and wherein major part is a reducing sugar; (3) pollution load is heavy, and the COD value of comprehensive wastewater is at 20000-30000mg/L, and slubbing liquid COD value can reach 110000mg/L; (4) acidity height, the pH value is about 1.0; (5) salinity height, SO
4 2-/ COD value can reach 0.5.Because above several characteristics, yellow ginger processing waste water are handled very difficulty.The processing of this type of waste water at present rests on laboratory lab scale level more, generally adopt anaerobism+aerobic bioremediation, but treatment effect is unsatisfactory, far can not reach the requirement of the relevant emission standard of country.Its reason mainly shows following two aspects: a large amount of SO that exist
4 2-Be reduced to sulfide in the anaerobic treatment process, sulfide has toxicity and produces restraining effect the methane-producing bacteria in the follow-up methane fermentation reactor; Sulphate reducing bacteria also can produce substrate competition with methanogen, thereby the methane fermentation reaction can not be carried out smoothly.The reason of this two aspect often causes anaerobic treatment failure or efficient not high.Therefore, how eliminating above-mentioned negative impact is the key that improves anaerobic treatment and even whole yellow ginger processing waste water treatment effect.
In addition, contain more nitrogenous substances in the yellow ginger processing waste water, these materials can be converted into NH in wastewater treatment process
4 +-N, the NH in the comprehensive wastewater
4 +-N content is at 1000-2000mg/L.The yellow ginger processing wastewater treatment method of report is paid attention to the removal of COD more at present, and has ignored NH
4 +The removal of-N and total nitrogen.Discharge of wastewater without denitrogenation processing can cause body eutrophication, and yellow ginger processing enterprise multidigit is in south water to north center line watershed, therefore must seek a kind of treatment process efficiently, reduce all contaminants content that comprises COD and total nitrogen in the yellow ginger processing waste water, make its energy qualified discharge, eliminate of the threat of yellow ginger processing waste water ecotope and people's safe drinking water.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, and a kind of method of efficient processing yellow ginger processing waste water is provided.By adopting the diphasic anaerobic treatment process that adds the desulfurization measure, eliminated SO effectively
4 2-Negative impact to anaerobic process produce has improved the anaerobic treatment effect; By adopt immobilized microorganism-BAF (G-BAF) to anaerobism water outlet further handle, reduced all contaminations in the waste water, the concentration of COD and total nitrogen especially makes the yellow ginger processing waste water can qualified discharge.
The object of the invention can realize by following manner: the inventive method is by adopting acidication and methane fermentation diphasic anaerobic and G-BAF immobilized microorganism-BAF to handle; Wherein undertaken by following sequential steps:
The yellow ginger processing waste water adds alkali in neutralization tank and regulates pH to neutral, enters reactor for hydrolysis and acidification;
The acidication water outlet is through materialization or biochemical desulfurization;
Enter the methane fermentation reactor after the desulfurization and carry out methane fermentation;
The water outlet of methane fermentation reactor enters two-stage G-BAF immobilized microorganism-BAF reactor, further handles the back qualified discharge.
Wherein,
In the neutralization tank, the pH value of yellow ginger processing waste water transfers to 7-9, in and with medicament be calcium oxide.
In reactor for hydrolysis and acidification and methane fermentation reactor, adopt upflow anaerobic sludge blanket reactor (UASB), EGSB (expanded granular sludge bed) (EGSB), anaerobic baffled reactor anaerobic reactors such as (ABR)
In reactor for hydrolysis and acidification and methane fermentation reactor, adopt anaerobic activated sludge to start, anaerobic activated sludge can use separately.
The microorganism of reactor for hydrolysis and acidification, the yellow ginger processing waste water behind the employing adjust pH is tamed; Microorganism in the methane fermentation reactor adopts the reactor for hydrolysis and acidification water outlet to tame; Domestication uses the COD concentration of yellow ginger processing waste water between 1500-3000mg/L; The temperature of reaction of reactor for hydrolysis and acidification is 20-35 ℃, and methane fermentation reactor reaction temperature is 30-35 ℃; After anaerobic reactor started, the residence time of reactor for hydrolysis and acidification was 5-20h, and the methane fermentation reactor residence time is 15-50h.
Sulfur removal technology between acidication and methane fermentation reactor is the sulfur removal technology of materialization or biochemical desulfurization form.
Adopt the macroporous netlike carrier in the G-BAF reactor, above fixing special efficient microorganism; Adopt the water outlet of methane fermentation reactor that microorganism is tamed; G-BAF reactor reaction temperature is a room temperature, and the residence time is 8-20h, and dissolved oxygen (DO) concentration is 2-5mg/L, and water outlet pH value is 7.5-8.5; The COD volumetric loading can reach 3-18kg/ (m
3D), clearance is 60-90%; The ammonia nitrogen volumetric loading can reach 0.5-4kg/ (m
3D), clearance is 90-100%.
A kind of purposes of efficient processing yellow ginger processing waste water is not only applicable to the yellow ginger processing waste water and handles, and can be applicable to the processing of the high concentrated organic wastewater of any sulfur-bearing hydrochlorate.
The yellow ginger processing waste water enters reactor for hydrolysis and acidification adding alkali adjusting pH value to neutrality.Acidication can make the macromolecular substance in the waste water be hydrolyzed into small molecules, and biochemical further improves, and COD obtains part and removes, and the vitriol in the waste water is reduced into sulfide or hydrogen sulfide simultaneously.The acidication water outlet enters the methane fermentation reactor and carries out methane fermentation after materialization or biochemical desulfurization, this stage can be removed most COD in waste water, reclaims simultaneously and obtains methane gas.The water outlet of methane fermentation reactor enters two-stage G-BAF reactor, further handles the back qualified discharge.
The volumetric loading of reactor for hydrolysis and acidification can reach 10-12kgCOD/ (m
3D), the COD clearance is 15-40%, and water outlet pH value is 5-7; The volumetric loading of methane fermentation reactor can reach 5-10kgCOD/ (m
3D), the COD clearance is 75-95%, and water outlet pH value is 7-9.Methane purity and productive rate that recovery obtains are respectively 85-95% and 0.2-0.3m
3CH
4/ KgCOD.
The present invention has following advantage compared to existing technology:
(1) adopt the diphasic anaerobic treatment process, with acidication and methane fermentation place respectively two independently reactor carry out, eliminated a large amount of SO that contain in the former water
4 2-Negative impact, avoided the substrate competition of the toxicity of sulfide that sulfate reduction produces or hydrogen sulfide and sulphate reducing bacteria and methanogen generation, thereby improved the load 5-22kgCOD/ (m of anaerobic treatment
3D) and efficient 75-95%.
(2) between acidication and methane fermentation reactor, add sulfur removal technology, not only can reduce the toxicity of sulfide, and can remove and realize the changing waste into resources utilization when polluting by the desulfurization recovery sulphur to follow-up product methane reaction.
(3) the present invention has farthest improved methane purity 85-95% and productive rate (0.2-0.3m
3CH
4/ KgCOD), reclaimed the energy, reduced processing cost (less than 5 yuan/ton).
(4) adopt two-stage G-BAF treatment technology, removed ammonia nitrogen and the total nitrogen in the waste water effectively, further reduced the concentration of other pollutent in the anaerobism water outlet, realized yellow ginger processing waste water qualified discharge.
(5) the present invention is not only applicable to the processing of yellow ginger processing waste water, and can be applicable to the processing of the high concentrated organic wastewater of any sulfur-bearing hydrochlorate.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Enumerate 3 embodiment below, the present invention is further specified, but the present invention is not only limited to these embodiment.
The process of present embodiment is: the yellow ginger processing waste water enters neutralization tank, regulate the pH value to neutral, enter the reactor for hydrolysis and acidification acidification reaction that is hydrolyzed then, enter desulphurization reactor again, adopt materialization or biochemical method to remove sulfide or hydrogen sulfide, its water outlet enters the methane fermentation reactor and produces methane reaction, and water outlet enters two-stage G-BAF reactor again and further removes water pollutant, qualified discharge then.
Adopt the present invention to handle the yellow ginger processing waste water, former water COD concentration is 4500mg/L, SO
4 2-Concentration is 2460mg/L, NH
4 +-N concentration is 90mg/L, water temperature is controlled at 30 ℃, 35 ℃ and 25 ℃ respectively in reactor for hydrolysis and acidification, methane fermentation reactor and the G-BAF reactor, and the residence time is respectively 10.8h, 37h and 8h, and final outflow water COD concentration is 92.5mg/L, sulfide concentration 0.6mg/L, NH
4 +-N concentration is 1.7mg/L, and TN (total nitrogen) concentration is 2.5mg/L.
Adopt the present invention to handle the yellow ginger processing waste water, former water COD concentration is 9500mg/L, SO
4 2-Concentration is 5130mg/L, NH
4 +-N concentration is 210mg/L, water temperature is controlled at 30 ℃, 32 ℃ and 20 ℃ respectively in reactor for hydrolysis and acidification, methane fermentation reactor and the G-BAF reactor, and the residence time is respectively 15h, 40h and 10h, and final outflow water COD concentration is 120.2mg/L, sulfide concentration 0.4mg/L, NH
4 +-N concentration is 5.3mg/L, and TN concentration is 7.8mg/L.
Embodiment 3
Adopt the present invention to handle the yellow ginger processing waste water, former water COD concentration is 22000mg/L, SO
4 2-Concentration is 10610mg/L, NH
4 +-N concentration is 503mg/L, water temperature is controlled at 35 ℃, 34 ℃ and 18 ℃ respectively in reactor for hydrolysis and acidification, methane fermentation reactor and the G-BAF reactor, and the residence time is respectively 15h, 42h and 20h, and final outflow water COD concentration is 143.6mg/L, sulfide concentration 0.9mg/L, NH
4 +-N concentration is 8.2mg/L, and TN concentration is 9.5mg/L.
By above-mentioned example as seen, the present invention all has good treatment effect for the yellow ginger processing waste water of different quality, and final outflow water reaches sewage comprehensive discharge one-level or secondary standard (GB8978-1996).
Claims (6)
1, a kind of method of handling the yellow ginger processing waste water is characterized in that this method is by adopting acidication and methane fermentation diphasic anaerobic and G-BAF immobilized microorganism-BAF processing; Wherein undertaken by following sequential steps:
The yellow ginger processing waste water adds alkali in neutralization tank and regulates pH to neutral, enters reactor for hydrolysis and acidification;
The acidication water outlet is through materialization or biochemical desulfurization;
Enter the methane fermentation reactor after the desulfurization and carry out methane fermentation;
The water outlet of methane fermentation reactor enters two-stage G-BAF immobilized microorganism-BAF reactor, further handles the back qualified discharge.
According to the method for the described processing yellow ginger of claim 1 processing waste water, it is characterized in that in neutralization tank that 2, the pH value of yellow ginger processing waste water transfers to 7-9, in and with medicament be calcium oxide.
3, according to the method for the described processing yellow ginger of claim 1 processing waste water, it is characterized in that in reactor for hydrolysis and acidification and methane fermentation reactor, adopt upflow anaerobic sludge blanket reactor, EGSB (expanded granular sludge bed), anaerobic baffled reactor.
4,, it is characterized in that in reactor for hydrolysis and acidification and methane fermentation reactor adopt anaerobic activated sludge to start, anaerobic activated sludge can use separately according to the method for claim 1 or 3 described processing yellow ginger processing waste waters.
5, according to the method for the described processing yellow ginger of claim 1 processing waste water, it is characterized in that: the microorganism of reactor for hydrolysis and acidification, the yellow ginger processing waste water behind the employing adjust pH is tamed; Microorganism in the methane fermentation reactor adopts the reactor for hydrolysis and acidification water outlet to tame; Domestication uses the COD concentration of yellow ginger processing waste water between 1500-3000mg/L; The temperature of reaction of reactor for hydrolysis and acidification is 20-35 ℃, and methane fermentation reactor reaction temperature is 30-35 ℃; After anaerobic reactor started, the residence time of reactor for hydrolysis and acidification was 5-20h, and the methane fermentation reactor residence time is 15-50h.
6, according to the method for the described processing yellow ginger of claim 1 processing waste water, it is characterized in that: adopt the macroporous netlike carrier in the G-BAF reactor, above fixing special efficient microorganism; Behind the G-BAF reactor start-up, its temperature of reaction is a room temperature, and the residence time is 8-20h, and dissolved oxygen DO concentration is 2-5mg/L, and water outlet pH value is 7.5-8.5; The COD volumetric loading can reach 3-18kg/m
3D, clearance are 60-90%; The ammonia nitrogen volumetric loading can reach 0.5-4kg/m
3D, clearance are 90-100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB200510132060XA CN1318323C (en) | 2005-12-23 | 2005-12-23 | Method for highly efficient treatment of yellow ginger-processing wastewater and uses thereof |
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| CNB200510132060XA CN1318323C (en) | 2005-12-23 | 2005-12-23 | Method for highly efficient treatment of yellow ginger-processing wastewater and uses thereof |
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| CN1318323C true CN1318323C (en) | 2007-05-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101302071B (en) * | 2008-06-12 | 2010-06-09 | 北京盖雅环境科技有限公司 | Method for processing palm oil waste water and use thereof |
| CN101654321B (en) * | 2008-08-21 | 2011-06-08 | 中国农业大学 | Dry manure two-phase anaerobic digestion system for pig farm |
| CN101967031B (en) * | 2010-10-20 | 2012-09-26 | 江苏兆盛环保集团有限公司 | Garbage percolate treatment method |
| CN101973681B (en) * | 2010-11-12 | 2011-12-07 | 昆明水啸科技有限公司 | Sewage treatment technology with sequencing mud membrane symbiosis method |
| CN102745868B (en) * | 2012-07-23 | 2013-08-21 | 青岛大学 | Method for removing carbon, nitrogen and sulfur in waste water |
| WO2014116186A1 (en) * | 2013-01-25 | 2014-07-31 | Nanyang Technological University | A process for mitigating sulfate impact on and enhancing methane production in anaerobic systems |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488581A (en) * | 2003-08-14 | 2004-04-14 | 华中师范大学 | Yellow giner saponin industrial sewage treating method and comprehensive utilization |
| CN1493533A (en) * | 2003-08-08 | 2004-05-05 | 朱作远 | Yellow ginger acid spliting waste water resource utilization technique |
| CN1528768A (en) * | 2003-09-29 | 2004-09-15 | 武汉泰古投资有限公司 | Method for treating waste water of chinese yam saporin and recovering gluocose and hydrochloric acid by membrane integrating technique |
| CN1587081A (en) * | 2004-08-03 | 2005-03-02 | 华中师范大学 | Process for treating peltate yam saponin production effluent |
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2005
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493533A (en) * | 2003-08-08 | 2004-05-05 | 朱作远 | Yellow ginger acid spliting waste water resource utilization technique |
| CN1488581A (en) * | 2003-08-14 | 2004-04-14 | 华中师范大学 | Yellow giner saponin industrial sewage treating method and comprehensive utilization |
| CN1528768A (en) * | 2003-09-29 | 2004-09-15 | 武汉泰古投资有限公司 | Method for treating waste water of chinese yam saporin and recovering gluocose and hydrochloric acid by membrane integrating technique |
| CN1587081A (en) * | 2004-08-03 | 2005-03-02 | 华中师范大学 | Process for treating peltate yam saponin production effluent |
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