CN102173538B - Device and process for biochemically treating saline organic wastewater - Google Patents
Device and process for biochemically treating saline organic wastewater Download PDFInfo
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- CN102173538B CN102173538B CN2011100620142A CN201110062014A CN102173538B CN 102173538 B CN102173538 B CN 102173538B CN 2011100620142 A CN2011100620142 A CN 2011100620142A CN 201110062014 A CN201110062014 A CN 201110062014A CN 102173538 B CN102173538 B CN 102173538B
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Abstract
The invention discloses a device and process for biochemically treating saline organic wastewater. The device comprises a circular mixed cultivating pond, a hydrolyzing pond, a contact oxidation pond, a secondary sedimentation pond, a sludge concentration pond, a sludge dewatering machine and a salt-tolerant decontaminating bacteria spread cultivation device, wherein the circular mixed cultivating pond, the hydrolyzing pond, the contact oxidation pond, the secondary sedimentation pond, the sludge concentration pond and the sludge dewatering machine are connected in sequence, and the salt-tolerant decontaminating bacteria spread cultivation device is connected with the circular mixed cultivating pond, the hydrolyzing pond and the contact oxidation pond respectively. Most of organic matters in saline waste water are degraded through salt-tolerant microbes in the circular mixed cultivating pond, and refractory phencyclic and heterocyclic macromolecular organic matters in the waste enter a hydrolyzing to be hydrolyzed and acidized into small molecular biodegradable organic matters in the hydrolyzing pond; most of the rest organic matters in water coming out of the hydrolyzing pond are degraded in the contact oxidation pond, and water coming out of the sedimentation pond is qualified to be discharged. The invention has the advantages of simple technological flow, high salinity tolerance, high organic matter treatment efficiency, no need of dilution by fresh water and low operation cost.
Description
Technical field
The invention belongs to field of environment protection, relate to a kind of salt-containing organic wastewater biochemical treatment apparatus and technology.
Background technology
Can discharging salinity very high organic waste water in some Industrial products production processes, salinity even surpass 20%.The sub-thread high-salt wastewater with produce other waste water and mix after; Its salt concentration also often surpasses 3%, and common biochemical treatment is difficult to normal processing, therefore; A lot of enterprises have to utilize some clear water big yields to be diluted to saltiness after below 0.8%, to handle again; Not only cause the waste of water resources, also increased treatment facility scale and total amount of pollutants discharged, the high salt organic waste water of this type has become the difficult point of water treatment field.
High-salt wastewater refers to the waste water of total salinity (in NaC1 content) at least 1%.The a large amount of inorganic salt that contain in this waste water have the obvious suppression effect to biological growth and metabolism, belong to one of unmanageable trade effluent.Can discharge high-salt wastewater in the Industrial processes such as printing and dyeing, papermaking, chemical industry, pharmacy and the right gas of oil, not only contain a large amount of inorganic salt in this type of waste water, and contain a large amount of difficult degradation hazardous and noxious substances, its in line ecotope of putting around having influenced.Because supersalinity has changed the osmotic pressure of microorganism cells, has pressed down microbial growth, will cause cell rupture when serious, so saltiness brings certain degree of difficulty also for the biological treatment of waste water.
At present to the processing successful story of high-salt wastewater seldom, the general employing tamed common sludge, but the saltiness of maximum processing waste water is no more than 3%.Most enterprises adopt the clear water Macrodilution to reduce the waste water saltiness.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of salt-containing organic wastewater biochemical treatment apparatus and technology are provided.
The salt-containing organic wastewater biochemical treatment apparatus comprises that circulation hold concurrently to support pond, hydrolytic tank, contact-oxidation pool, second pond, sludge thickener, sludge dewatering equipment, the salt tolerant decontamination bacterium device that spreads cultivation; Circulation hold concurrently to be supported pond, hydrolytic tank, contact-oxidation pool, second pond, sludge thickener, sludge dewatering equipment and is connected in order, and the salt tolerant decontamination bacterium device that spreads cultivation is held concurrently with circulation respectively and supported pond, hydrolytic tank, contact-oxidation pool and be connected.
Described circulation is held concurrently, and foster pond comprises cylindrical shell, intake water distributor, salt tolerant bacterium packing layer, distribution device, effluent weir, reflux pump, phegma water distributor, water outlet; Be provided with into water water distributor, phegma water distributor, distribution device, salt tolerant bacterium packing layer, effluent weir in the cylindrical shell from top to bottom successively; The import of phegma water distributor links to each other with effluent weir through reflux pump; The effluent weir place is provided with water outlet, and the used filler of described salt tolerant bacterium packing layer is the hollow out laminal filler.
The cross section of described cylindrical shell is cylindrical or square, and height is 2:1～3:1 with diameter or side ratio; Reflux type is external water pump circulation or built-in aerating apparatus " gas is carried " circulation, and flooding quantity is 1:1～1:3 with backflow water yield ratio.
It is the hollow out laminal filler that described salt tolerant bacterium packing layer and hydrolytic tank are adorned used filler, and bed stuffing height accounts for 60～80% of total height; Described hollow out laminal filler is the hanging filler of the chip carrier processed of plastics and fiber, and single filler diameter is 250～350mm, and a pitch of fins is 150～200mm, and filler suspension spacing is 300～400mm.
Described circulation oxygen compatibility pool, hydrolytic tank and contact-oxidation pool are provided with aerator, and aerator is perforated pipe, single hole menbrane aerator, can promote micro-hole aerator or swapping type does not have the bone micropore aeration pipe; GWR is 2:1～40:1.
The salt-containing organic wastewater biochemical processing method is: the organic waste water that saltiness is 2% ~ 8%, COD is 1200 ~ 6700mg/L at first gets into circulation and holds concurrently and support the pond; Holding concurrently that organism in the waste water passes through in the circulation oxygen compatibility pool supported under the salt-durable microbe Degradation; Remove most of organism; Waste water residence time of circulation oxygen compatibility pool at 24h ~ 48h, the pH value is 6.0～9.0, dissolved oxygen is 0.1～0.4mg/L; The water outlet of circulation oxygen compatibility pool is from flowing into hydrolytic tank, and the effect of hydrolytic tank mainly is the organism that the phenyl ring class of difficult degradation in the waste water, heterocyclic larger molecular organics acidication is become small molecules, readily biodegradable, improves the B/C of waste water; The residence time of hydrolytic tank is 24 ~ 36h, and the pH value is 6.0 ~ 8.5, and dissolved oxygen is 0.1 ~ 0.2mg/L; The hydrolytic tank water outlet is from flowing into contact-oxidation pool, and the main effect of contact-oxidation pool is remaining most of organism in the degrading waste water; The residence time of contact-oxidation pool is 26 ~ 48h, and pH is 6.0 ~ 8.0, and dissolved oxygen is 2 ~ 4mg/L; The water outlet of contact-oxidation pool gets into second pond, and the ST is 1.5～2 hours, and surface load is 0.8～1.2m
3/ m
2.h, the water outlet qualified discharge of settling tank; Salt tolerant decontamination bacterium is delivered to double pond, hydrolytic tank and the contact-oxidation pool of supporting of circulation off and on after the device that spreads cultivation spreads cultivation; Salt tolerant decontamination bacterium dosage is to handle 3 of the water yield ~ 6 ‰ weekly, or handles 1 of the water yield ~ 2 ‰ every day.
Described salt tolerant decontamination bacterium is that photosynthetic bacterium is main salt tolerant, has a liking for the salt microorganism species; The saltiness of salt tolerant decontamination bacterium tolerance is 2～8%.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention adopts the double pond of supporting of circulation to have aerobic, hold concurrently oxygen, the corresponding bacterial classification of anaerobism and effect, and very high flexibility and treatment effect are arranged, and be used salt tolerant decontamination bacterium, be a kind of high loading biochemical processing process;
2, the present invention adopts special hollow out laminal filler, and the relative current planar cross-sectional of this type of filler is little, and is little to flow resistance, is suitable for adhering to of salt-durable microbe, and can control the adhesion amount of flow resistance and mikrobe through different layout densities is set.
3, advantage of the present invention is that technical process is simple, can tolerate higher salinity, and the organism processing efficiency is high, does not need the fresh water dilution, and working cost is low, is easy to apply.
Description of drawings
Fig. 1 is a salt-containing organic wastewater biochemical treatment apparatus structural representation;
Fig. 2 is the double pool structure synoptic diagram of supporting of circulation of the present invention;
Among the figure: cylindrical shell 1, water inlet water distributor 2, salt tolerant bacterium packing layer 3, distribution device 4, effluent weir 5, reflux pump 6, phegma water distributor 7, water outlet 8.
Embodiment
Shown in accompanying drawing; The salt-containing organic wastewater biochemical treatment apparatus comprises that circulation hold concurrently to support pond, hydrolytic tank, contact-oxidation pool, second pond, sludge thickener, sludge dewatering equipment, the salt tolerant decontamination bacterium device that spreads cultivation; Circulation hold concurrently to be supported pond, hydrolytic tank, contact-oxidation pool, second pond, sludge thickener, sludge dewatering equipment and is connected in order, and the salt tolerant decontamination bacterium device that spreads cultivation is held concurrently with circulation respectively and supported pond, hydrolytic tank, contact-oxidation pool and be connected.
Described circulation is held concurrently, and foster pond comprises cylindrical shell 1, intake water distributor 2, salt tolerant bacterium packing layer 3, distribution device 4, effluent weir 5, reflux pump 6, phegma water distributor 7, water outlet 8; Be provided with into water water distributor 2, phegma water distributor 7, distribution device 4, salt tolerant bacterium packing layer 3, effluent weir 5 in the cylindrical shell 1 from top to bottom successively; 7 imports of phegma water distributor link to each other with effluent weir 5 through reflux pump 6; Effluent weir 5 places are provided with water outlet 8, and described salt tolerant bacterium packing layer 3 used fillers are the hollow out laminal filler.
The cross section of described cylindrical shell 1 is cylindrical or square, and height is 2:1～3:1 with diameter or side ratio; Reflux type is external water pump circulation or built-in aerating apparatus " gas is carried " circulation, and flooding quantity is 1:1～1:3 with backflow water yield ratio.
It is the hollow out laminal filler that described salt tolerant bacterium packing layer 3 is adorned used filler with hydrolytic tank, and bed stuffing height accounts for 60～80% of total height; Described hollow out laminal filler is the hanging filler of the chip carrier processed of plastics and fiber, and single filler diameter is 250～350mm, and a pitch of fins is 150～200mm, and filler suspension spacing is 300～400mm.
Described circulation oxygen compatibility pool, hydrolytic tank and contact-oxidation pool are provided with aerator, and aerator is perforated pipe, single hole menbrane aerator, can promote micro-hole aerator or swapping type does not have the bone micropore aeration pipe; GWR is 2:1～40:1.
The salt-containing organic wastewater biochemical processing method is: the organic waste water that saltiness is 2% ~ 8%, COD is 1200 ~ 6700mg/L at first gets into circulation and holds concurrently and support the pond; Sewage is when oxygenation keeps holding concurrently the state of supporting; Through low-lift pump perhaps the mode of " gas is carried " treat effluent is circulated to inhalant region; Utilize the water after handling that water inlet is diluted to reduce the impact of venomous injurant confrontation mikrobe on the one hand, the impact that utilizes circulating water flow to produce on the other hand makes the mud of inhalant region form suspended state and then strengthens the muddy water mixed effect; In groove, form oxygen consumption district, aerobic area and anaerobic zone, utilize the salt tolerant decontamination bacterium that is fixed on the hollow out laminal filler to handle organism simultaneously, waste water residence time of circulation oxygen compatibility pool at 24h ~ 48h, the pH value is 6.0～9.0, dissolved oxygen is 0.1～0.4mg/L; The water outlet of circulation oxygen compatibility pool is from flowing into hydrolytic tank; Further utilize the organism in the salt tolerant bacterium degraded high-salt wastewater on the hollowed out spherical filler; The effect of hydrolytic tank mainly is the organism that the phenyl ring class of difficult degradation in the waste water, heterocyclic larger molecular organics acidication is become small molecules, readily biodegradable, improves the B/C of waste water; The residence time of hydrolytic tank is 24 ~ 36h, and the pH value is 6.0 ~ 8.5, and dissolved oxygen is 0.1 ~ 0.2mg/L; The hydrolytic tank water outlet is from flowing into contact-oxidation pool, and the main effect of contact-oxidation pool is remaining most of organism in the degrading waste water; The residence time of contact-oxidation pool is 26 ~ 48h, and pH is 6.0 ~ 8.0, and dissolved oxygen is 2 ~ 4mg/L; The water outlet of contact-oxidation pool gets into second pond, and the ST is 1.5～2 hours, and surface load is 0.8～1.2m
3/ m
2.h, the water outlet qualified discharge of settling tank; Salt tolerant decontamination bacterium is delivered to double pond, hydrolytic tank and the contact-oxidation pool of supporting of circulation off and on after the device that spreads cultivation spreads cultivation; Salt tolerant decontamination bacterium dosage is to handle 3 of the water yield ~ 6 ‰ weekly, or handles 1 of the water yield ~ 2 ‰ every day.Described salt tolerant decontamination bacterium is that photosynthetic bacterium is main salt tolerant, has a liking for the salt microorganism species; The saltiness of salt tolerant decontamination bacterium tolerance is 2～8%.Get into sludge thickener through the isolating mud of settling tank, utilize the sludge dewatering equipment dehydration again, last mud carries out harmlessness disposing or outward transport.
Application example:
1) utilization the present invention handles high salt pharmaceutical wastewater, and the water yield is 600m
3/ d, influent quality is following: COD
Cr1200mg/L, BOD
5256mg/L, saltiness 8%, pH7.8, this waste water at first gets into the circulation oxygen compatibility pool, circulation oxygen compatibility pool HRT 24h, dissolved oxygen 0.1mg/L, reflux ratio 2:1 adopts perforated pipe aerating regulation, and GWR is 2:1; The water outlet of circulation oxygen compatibility pool flows into hydrolytic tank certainly, hydrolytic tank HRT 24h, and bed stuffing height is 60% of a pond height in the dissolved oxygen 0.1mg/L, hydrolytic tank, GWR is 4:1; The hydrolytic tank water outlet is from flowing into contact-oxidation pool, and contact-oxidation pool HRT is 26h, and interior extension combined stuffing is established and can be promoted the micropore aeration pipe aeration, and GWR is 15:1, and dissolved oxygen is at 2mg/L; Salt tolerant decontamination bacterium device 1 cover that spreads cultivation, 3m
3, the bacterial classification arbitrary way is to replenish once in per 2 days, magnitude of recruitment is 2.4m
3Salt-containing organic wastewater after the salt-containing organic wastewater biochemical treatment apparatus is handled, water outlet COD
Cr420mg/L, BOD
528mg/L reaches (CJ343-2010) " sewage enters cities and towns water drain water quality standard " (wherein COD is no more than 500mg/L).Get into sludge thickener through the isolating mud of settling tank, utilize the sludge dewatering equipment dehydration again, last mud carries out harmlessness disposing or outward transport.
2) use this apparatus processes to handle high salt dyestuff wastewater from chemical industry, the water yield is 460m
3/ d, influent quality is following: COD
Cr3875mg/L, BOD
5891mg/L, saltiness 3.5%mg/L, pH1.5, this waste water at first are adjusted to 7 backs through pH and get into the circulation oxygen compatibility pool, circulation oxygen compatibility pool HRT36h, and dissolved oxygen 0.2mg/L, reflux ratio 1:1 adopts perforated pipe aerating regulation, and GWR is 3:1; The water outlet of circulation oxygen compatibility pool flows into hydrolytic tank certainly, hydrolytic tank HRT 36h, and bed stuffing height is 2/3 of a pond height in the dissolved oxygen 0.2mg/L, hydrolytic tank, GWR is 6:1; The hydrolytic tank water outlet is from flowing into contact-oxidation pool, and contact-oxidation pool HRT is 32h, and interior extension combined stuffing is established and can be promoted the micropore aeration pipe aeration, and GWR is 20:1, and dissolved oxygen is at 3mg/L; Salt tolerant decontamination bacterium device 1 cover that spreads cultivation, 3m
3, the bacterial classification arbitrary way is to replenish once in per 2 days, magnitude of recruitment is 1.3m
3Salt-containing organic wastewater after the salt-containing organic wastewater biochemical treatment apparatus is handled, water outlet COD
Cr345mg/L, BOD
522mg/L reaches (CJ343-2010) " sewage enters cities and towns water drain water quality standard " (wherein COD is no more than 500mg/L).Get into sludge thickener through the isolating mud of settling tank, utilize the sludge dewatering equipment dehydration again, last mud carries out harmlessness disposing or outward transport.
3) utilization the present invention handles high salt chemical engineering waste water, and the water yield is 800m
3/ d, influent quality is following: COD
Cr6700mg/L, BOD
51437mg/L, saltiness 2%, pH1.5, this waste water at first are adjusted to 7 through pH and get into the circulation oxygen compatibility pool, circulation oxygen compatibility pool HRT48h, dissolved oxygen 0.4mg/L, reflux ratio 2:1 adopts perforated pipe aerating regulation, and GWR is 3:1; The water outlet of circulation oxygen compatibility pool flows into hydrolytic tank certainly, hydrolytic tank HRT 36h, and bed stuffing height is 70% of a pond height in the dissolved oxygen 0.3mg/L, hydrolytic tank, GWR is 7:1; The hydrolytic tank water outlet is from flowing into contact-oxidation pool, and contact-oxidation pool HRT is 48h, and interior extension combined stuffing is established and can be promoted the micropore aeration pipe aeration, and GWR is 40:1, and dissolved oxygen is at 4mg/L; Salt tolerant decontamination bacterium device 1 cover that spreads cultivation, 3m
3, the bacterial classification arbitrary way is to replenish once in per 2 days, magnitude of recruitment is 1.6m
3Salt-containing organic wastewater after the salt-containing organic wastewater biochemical treatment apparatus is handled, water outlet COD
Cr235mg/L, BOD
525mg/L reaches (CJ343-2010) " sewage enters cities and towns water drain water quality standard " (wherein COD is no more than 500mg/L).Get into sludge thickener through the isolating mud of settling tank, utilize the sludge dewatering equipment dehydration again, last mud carries out harmlessness disposing or outward transport.
Claims (4)
1. salt-containing organic wastewater biochemical treatment apparatus; It is characterized in that comprising circulation oxygen compatibility pool, hydrolytic tank, contact-oxidation pool, second pond, sludge thickener, sludge dewatering equipment, the salt tolerant decontamination bacterium device that spreads cultivation; Circulation oxygen compatibility pool, hydrolytic tank, contact-oxidation pool, second pond, sludge thickener, sludge dewatering equipment connect in order, and the salt tolerant decontamination bacterium device that spreads cultivation is connected with circulation oxygen compatibility pool, hydrolytic tank, contact-oxidation pool respectively; Described circulation oxygen compatibility pool comprises cylindrical shell (1), water inlet water distributor (2), salt tolerant bacterium packing layer (3), distribution device (4), effluent weir (5), reflux pump (6), phegma water distributor (7), water outlet (8); Be provided with into water water distributor (2), phegma water distributor (7), distribution device (4), salt tolerant bacterium packing layer (3), effluent weir (5) in the cylindrical shell (1) from top to bottom successively; Phegma water distributor (7) import links to each other with effluent weir (5) through reflux pump (6); Effluent weir (5) locates to be provided with water outlet (8), and the used filler of described salt tolerant bacterium packing layer (3) is the hollow out laminal filler; Described salt tolerant bacterium packing layer (3) and the used filler of hydrolytic tank are the hollow out laminal filler, and bed stuffing height accounts for 60～80% of total height; Described hollow out laminal filler is the hanging filler of the chip carrier processed of plastics and fiber, and single filler diameter is 250～350mm, and a pitch of fins is 150～200mm, and filler suspension spacing is 300～400mm.
2. a kind of salt-containing organic wastewater biochemical treatment apparatus according to claim 1, the cross section that it is characterized in that described cylindrical shell (1) is cylindrical or square, height is 2: 1～3: 1 with diameter or side ratio; Reflux type is external water pump circulation or built-in aerating apparatus " gas is carried " circulation, and flooding quantity is 1: 1～1: 3 with backflow water yield ratio.
3. a kind of salt-containing organic wastewater biochemical treatment apparatus according to claim 1; It is characterized in that described circulation oxygen compatibility pool, hydrolytic tank and contact-oxidation pool are provided with aerator, aerator is perforated pipe, single hole menbrane aerator, can promote micro-hole aerator or swapping type does not have the bone micropore aeration pipe; GWR is 2: 1～40: 1.
4. salt-containing organic wastewater biochemical processing method that use is installed according to claim 1; It is characterized in that the organic waste water that saltiness is 2%～8%, COD is 1200～6700mg/L at first gets into the circulation oxygen compatibility pool; Under the double oxygen salt-durable microbe Degradation that organism in the waste water passes through, remove most of organism in the circulation oxygen compatibility pool, waste water residence time of circulation oxygen compatibility pool at 24h～48h; The pH value is 6.0～9.0, and dissolved oxygen is 0.1～0.4mg/L; The water outlet of circulation oxygen compatibility pool is from flowing into hydrolytic tank, and the effect of hydrolytic tank mainly is the organism that the phenyl ring class of difficult degradation in the waste water, heterocyclic larger molecular organics acidication is become small molecules, readily biodegradable, improves the B/C of waste water; The residence time of hydrolytic tank is 24～36h, and the pH value is 6.0～8.5, and dissolved oxygen is 0.1～0.2mg/L; The hydrolytic tank water outlet is from flowing into contact-oxidation pool, and the main effect of contact-oxidation pool is remaining most of organism in the degrading waste water; The residence time of contact-oxidation pool is 26～48h, and pH is 6.0～8.0, and dissolved oxygen is 2～4mg/L; The water outlet of contact-oxidation pool gets into second pond, and the ST is 1.5～2 hours, and surface load is 0.8～1.2m
3/ (m
2H), the water outlet qualified discharge of settling tank; Salt tolerant decontamination bacterium is delivered to circulation oxygen compatibility pool, hydrolytic tank and contact-oxidation pool off and on after the device that spreads cultivation spreads cultivation; Salt tolerant decontamination bacterium dosage is to handle 3 of the water yield～6 ‰ weekly, or handles 1 of the water yield～2 ‰ every day; Described salt tolerant decontamination bacterium is that photosynthetic bacterium is main salt tolerant, has a liking for the salt microorganism species; The saltiness of salt tolerant decontamination bacterium tolerance is 2～8%.
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| CN2011100620142A CN102173538B (en) | 2011-03-15 | 2011-03-15 | Device and process for biochemically treating saline organic wastewater |
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| CN2011100620142A CN102173538B (en) | 2011-03-15 | 2011-03-15 | Device and process for biochemically treating saline organic wastewater |
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| CN102173538B true CN102173538B (en) | 2012-07-25 |
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| CN103613250B (en) * | 2013-12-04 | 2015-09-09 | 成都双地环境工程有限公司 | A kind for the treatment of process of pickle wastewater |
| CN107381784A (en) * | 2016-05-17 | 2017-11-24 | 江苏如意环境工程有限公司 | A kind of new resistance to high salt, high organic wastewater biological treatment device |
| CN106186364B (en) * | 2016-08-29 | 2023-06-27 | 武汉汇中大川自动控制设备有限公司 | High-salinity sewage treatment device and sewage treatment method thereof |
| CN108862938A (en) * | 2018-08-17 | 2018-11-23 | 江苏泰利达新材料股份有限公司 | The method for treating waste liquid of CMC or ammonia creatine sodium or liquid detergent |
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| JP3366962B2 (en) * | 1999-03-29 | 2003-01-14 | 学校法人立命館 | Salt-tolerant Bacillus cereus CH-6 and method for treating wastewater with high salt concentration |
| CN101054232A (en) * | 2007-05-31 | 2007-10-17 | 北京师范大学 | Highly efficient treatment process for waster water with high content of salt |
| CN101885569B (en) * | 2010-08-06 | 2012-12-12 | 中环（中国）工程有限公司 | Process for treating high-salinity organic wastewater |
| CN201999831U (en) * | 2011-03-15 | 2011-10-05 | 浙江环科环境研究院有限公司 | Biochemical treatment device for salt-containing organic wastewater |
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