CN107032536A - A kind of method that tandem integral type air supporting removes COD in citrus waste water - Google Patents
A kind of method that tandem integral type air supporting removes COD in citrus waste water Download PDFInfo
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- CN107032536A CN107032536A CN201710494332.3A CN201710494332A CN107032536A CN 107032536 A CN107032536 A CN 107032536A CN 201710494332 A CN201710494332 A CN 201710494332A CN 107032536 A CN107032536 A CN 107032536A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The present invention relates to a kind of method that tandem integral type air supporting removes COD in citrus waste water, it uses a kind of citrus wastewater treatment equipment, waste water passes sequentially through one-level regulating reservoir, one-level coagulating basin, one-level flocculation tank, one-level air supporting casing, intermediate buffering, two grades of regulating reservoirs, two-stage coagulation pond, two grades of flocculation tanks and secondary air-floatation casing, is most discharged afterwards through discharge bay；One-level air supporting acts on water cationic non-solubility pollutant from anionic PAM, and secondary air-floatation is using anion non-solubility pollutant in cationic PAM effect water；Simultaneously in one, two two-stage air supporting, ozone is passed through by ozone dissolving and removes dissolubility and partial solubility pollutant in water removal.The present invention is using " cloudy+sun " ion coupling ozone tandem integral type air flotation technology, it is intended to which non-solubility COD in sewage can not be removed completely by solving existing sewage air-flotation processing unit, and air flotation can not remove the short slab of dissolubility COD in sewage.
Description
【Technical field】
The present invention relates to a kind of method of wastewater treatment, and in particular to a kind of tandem integral type air supporting is removed in citrus waste water
COD method, belongs to technical field of waste water processing.
【Background technology】
Citrus is one of the most important industrial crops in the world and agricultural product, is also the big fruit of international trade first.China
It is one of main country of origin of citrus, is also to cultivate the earliest country of citrus in the world, the cultivation history for having literature record reaches
More than 4000 years.China's citriculture area (ranking first in the world) was by 3.27 ten thousand hm in 19492Develop into 1,960,000 hm in 20162,
Increase nearly 60 times.Citrus Industry is always " using water rich and influential family ", the purification and recycling of water be related to Citrus procession enterprise into
Originally with the quality of ecological environment.For example：Water consumption is very huge in citrus can production process, and often producing 1 ton of citrus can needs
30~50t of water consumption, the wastewater discharge after use is very big.The production technology of Citrus procession enterprise is essentially identical：Raw material → blanching
→ peeling → point valve → soda acid processing → sorting → tinning → filling juice → exhaust → sealed cans → sterilizing → storage.Sewage essentially from
Boiling hot tangerine hot water, peeling point valve soaking water, soda acid processing chute water in processing, sorting examine chute water and low temperature sterilization dirty
Water.Concentration of wastewater is highly unstable, and the basic slant acidities of pH, content of organics is higher, and suspended material is more, but ammonia nitrogen index is not
It is high.Contain substantial amounts of organic matter simultaneously, pectin substance content is high, and biochemical treatment is difficult, is caused to enterprise at larger waste water
Reason burden, and serious environmental pollution can be caused by directly discharging.Therefore, Citrus procession water consume, improvement citrus how is reduced to give up
Water treatment technology, the utilization rate of raising water are key subjects of the pendulum in face of Citrus procession enterprise.
Citrus purification of waste water typically uses non-solubility COD, biochemical treatment in " air supporting+biochemistry " technique, air-flotation process water
Dissolubility COD in water.Traditional air floating water purification technology is air with water under certain operating pressure, makes gas to greatest extent
Dissolve in water, make every effort to be in saturation state.Then the pressure air-dissolving water formed is discharged by depressurizing, produced substantial amounts of fine
Bubble, is fully contacted with the suspension flco in water, suspension flco in water is sticked on microbubble, and float to water with bubble
Face, forms after scum silica frost, separation of solid and liquid to purify water.Addition coagulant (such as polyaluminium is needed during this in raw water
Aluminium PAC) or flocculant (polyacrylamide PAM), after effective flocculation reaction, raw water enters contact zone of dissolved air flotation.In contact zone
Interior, flco is mutually bonded in the microbubble and raw water in dissolved air water, together into Disengagement zone.Under bubble buoyancy effect, flco
Liquid level is risen to together with bubble, scum silica frost is formed.Scum silica frost is scraped to sludge area by slag-scraper, the clear water of lower floor by collector pipe from
It flow to clear water reserviors.A portion clear water flows back, and is used for air dissolving system, another part is then discharged.Pneumatically supported advantage：Effectively go
Except the pollutant such as tiny suspended particulate in micro-polluted water；The dissolved oxygen content in water is significantly increased in air supporting, is effectively improved
The quality of water environment；It is easy to operate easy to maintain, Automatic Control can be achieved；Capacity of resisting impact load is strong, to water quality, water
Change adaptability good；Can plug and play, get instant result, operational management is flexible, and operating cost is low.
Correlative study shows that the non-solubility COD in citrus waste water (is mainly derived from tiny suspended particulate, pectin solid miscellaneous
Matter etc., particle size is in 1-100nm) more than the 60% of the total contribution margins of COD is accounted for, the selection of flocculant is the most key, generally selects
Inorganic coagulant (PAC) and organic flocculant (PAM) combined air flotation technology.Flocculating effect and PAM type (yin, yang), molecule
Amount has direct relation.The gas-chromatography the qualitative analysis of citrus waste water shows, both contains organic pollution (such as in citrus waste water
Terpenes, arene compounds), also containing inorganic pollution (such as cultured water, sulfate, amino acid).These pollutants
Have it is positively charged (for example：Charcoal cation, nitrogen cation etc.), negatively charged (such as COO-, the O- etc.) having, flocculation mechanism according to
What is leaned on is the charge effect between zwitterion, it means that traditional simple flocculant (anion or sun using single type
Ion) once flocculate it is difficult to remove non-solubility COD in water completely.In order to which depth flocculation is cloudy or cationic organic pollution,
" cloudy+sun " ion population type polyacrylamide flocculant certainly will be used, while ozone is substituted into air using dissloved air vessel
Bubble bubbling flotation tank, realizes and removes non-solubility COD completely, being introduced into for ozone can remove partial solubility COD in water removal
Purpose.
Therefore, in order to solve the above technical problems, removing citrus it is necessory to the tandem integral type air supporting for providing a kind of innovation
COD method in waste water, to overcome the defect of the prior art.
【The content of the invention】
To solve the above problems, it is an object of the invention to provide a kind of tandem that ozone is coupled using " cloudy+sun " ion
The method that integral type air supporting removes COD in citrus waste water.
To achieve the above object, the technical scheme taken of the present invention is：A kind of tandem integral type air supporting removes citrus waste water
Middle COD method, it uses a kind of citrus wastewater treatment equipment, and the device includes one-level air-flotation system, secondary air-floatation system, gone out
Pond and ozone dissolving；Wherein, the one-level air-flotation system include be sequentially connected one-level regulating reservoir, one-level coagulating basin,
One-level flocculation tank and one-level air supporting casing；The secondary air-floatation system include be sequentially connected two grades of regulating reservoirs, two grades mix
Solidifying pond, two grades of flocculation tanks and secondary air-floatation casing；The one-level air supporting casing is connected to two grades by an intermediate buffering pond
Regulating reservoir；The ozone dissolving is respectively connecting to one-level air supporting casing and secondary air-floatation casing；The discharge bay is connected to two
Level air supporting casing；
Waste water passes sequentially through one-level regulating reservoir, one-level coagulating basin, one-level flocculation tank, one-level air supporting casing, middle slow
Punching, two grades of regulating reservoirs, two-stage coagulation pond, two grades of flocculation tanks and secondary air-floatation casing, are most discharged through discharge bay afterwards；
Wherein, one-level air supporting acts on water cationic non-solubility pollutant from anionic PAM, and secondary air-floatation is used
Anion non-solubility pollutant in cationic PAM effect water；Simultaneously in one, two two-stage air supporting, pass through ozone dissolving
It is passed through ozone and removes dissolubility and partial solubility pollutant in water removal.
COD method is further in the tandem integral type air supporting removal citrus waste water of the present invention：The one-level air buoyancy tank
Slag scraping mechanism is equipped with body and secondary air-floatation casing.
COD method is also in the tandem integral type air supporting removal citrus waste water of the present invention：The addition of the PAC is 3
~10wt%, PAM addition are 0.05~0.5wt%, 0.2~0.4MPa of ozone generating capacity.
Compared with prior art, the present invention has the advantages that：
1. the method that the tandem integral type air supporting of the present invention removes COD in citrus waste water has ozone oxidation with efficient air-floating
The integrated water processing method that machine combines, demulsification or flocculation, separation of solid and liquid can be completed simultaneously in an operating unit, is removed
Color, smell, taste, multiple processes such as sterilization.The technique is, instead of air as molten gas source of the gas, to be sucked using air dissolved pump smelly with ozone
Oxygen, in separator interior release, produces uniform ozone microbubble, synchronously realizes that contact of the ozone bubbles with pollutant is adhered to and right
The oxidizing process of pollutant, is finally completed dissolved air flotation.
2. the tandem integral type air supporting of the present invention remove the method for COD in citrus waste water using floating ozone integral type, " it is cloudy+
Sun " effect tandem, non-dissolving and dissolubility COD are removed simultaneously, for the low initial COD products of shaddock ped class etc. in citrus products,
COD can be dropped to below 500mg/g, the in line standard for receiving pipe of some citrus enterprises can be reached, it is not necessary to again through biochemistry pool.
For products such as the contour initial COD of capsule, magma in citrus products, raw water COD is reduced by 20~50% or so, mitigates biochemistry pool
Load, reduce the biochemistry pool residence time, and then improve water process amount.
【Brief description of the drawings】
Fig. 1 is the schematic diagram of the citrus wastewater treatment equipment of the present invention.
【Embodiment】
Refer to shown in Figure of description 1, the present invention removes the side of COD in citrus waste water for a kind of tandem integral type air supporting
Method, it uses a kind of citrus wastewater treatment equipment, the device by one-level air-flotation system 1, secondary air-floatation system 2, discharge bay 3 and
A few part compositions such as ozone dissolving 4.
Wherein, the one-level air-flotation system 1 includes one-level regulating reservoir 11, one-level coagulating basin 12, the one-level wadding being sequentially connected
Solidifying reaction tank 13 and one-level air supporting casing 14.The secondary air-floatation system 2 include be sequentially connected two grades of regulating reservoirs 21, two grades mix
Solidifying pond 22, two grades of flocculation tanks 23 and secondary air-floatation casing 24.The one-level air supporting casing 1 is connected by an intermediate buffering pond 5
It is connected to two grades of regulating reservoirs 21.Slag scraping mechanism is equipped with the one-level air supporting casing 14 and secondary air-floatation casing 24.
The ozone dissolving 4 is respectively connecting to one-level air supporting casing 14 and secondary air-floatation casing 24.
The discharge bay 4 is connected to secondary air-floatation casing 24, the water after being handled for receiving.
The method that the tandem integral type air supporting of the present invention removes COD in citrus waste water is as follows：Waste water passes sequentially through one-level tune
Save pond 11, one-level coagulating basin 12, one-level flocculation tank 13, one-level air supporting casing 14, intermediate buffering pond 5, two grades of regulating reservoirs 21,
Two-stage coagulation pond 22, two grades of flocculation tanks 23 and secondary air-floatation casing 24, are most discharged through discharge bay 4 afterwards.
Wherein, one-level air supporting acts on water cationic non-solubility pollutant from anionic PAM, and secondary air-floatation is used
Anion non-solubility pollutant in cationic PAM effect water；Simultaneously in one, two two-stage air supporting, substituted using ozone empty
Gas produces part dissolubility pollutant in ascending gas bubbles and then oxidation removal water as dissolving.The addition of the PAC be 3~
10wt%, PAM addition are 0.05~0.5wt%, 0.2~0.4MPa of ozone generating capacity.
The present invention, instead of air as molten gas source of the gas, ozonized air is sucked using air dissolved pump with ozonized air, is being divided
Discharged from inside device, produce uniform ozone microbubble, synchronously realize that contact of the ozone bubbles with pollutant is adhered to and to pollutant
Oxidizing process, be finally completed dissolved air flotation.
The specific embodiment that the tandem integral type air supporting of the present invention removes COD method in citrus waste water is as follows：
Embodiment 1, for citrus deep processing shaddock ped class product, 3~10wt%PAC, 0.05~0.5wt%PAM, ozone hair
0.2~0.4MPa of raw amount, one-level air supporting uses PAC using PAC and anionic PAM coupling ozone technology, secondary air-floatation
Ozone technology is coupled with anionic PAM, COD value is reduced to 500 from 1000~1500mg/g of raw water after one-level air supporting
200~400mg/L is reduced to after~800mg/L, secondary air-floatation.
Embodiment 2, for citrus deep processing magma class product, 3~10wt%PAC, 0.05~0.5wt%PAM, ozone hair
0.2~0.4MPa of raw amount, one-level air supporting uses PAC using PAC and anionic PAM coupling ozone technology, secondary air-floatation
Ozone technology is coupled with anionic PAM, COD value is reduced to 2000 from 3000~3500mg/L of raw water after one-level air supporting
1500~2000mg/L is reduced to after~2500mg/L, secondary air-floatation.
Embodiment 3, for citrus deep processing capsule class product, 3~10wt%PAC, 0.05~0.5wt%PAM, ozone hair
0.2~0.4MPa of raw amount, one-level air supporting uses PAC using PAC and anionic PAM coupling ozone technology, secondary air-floatation
Ozone technology is coupled with anionic PAM, COD value is reduced to 3000 from 4000~4500mg/L of raw water after one-level air supporting
2500~3000mg/L is reduced to after~3500mg/L, secondary air-floatation.
Embodiment above is only the preferred embodiment of this creation, all in this wound not to limit this creation
Any modification, equivalent substitution and improvements for being done etc. within the spirit and principle of work, should be included in this creation protection domain it
It is interior.
Claims (3)
1. a kind of method that tandem integral type air supporting removes COD in citrus waste water, it is characterised in that：It uses a kind of citrus waste water
Processing unit, the device includes one-level air-flotation system, secondary air-floatation system, discharge bay and ozone dissolving；Wherein, described one
Level air-flotation system includes one-level regulating reservoir, one-level coagulating basin, one-level flocculation tank and the one-level air supporting casing being sequentially connected；Institute
State two grades of regulating reservoirs, two-stage coagulation pond, two grades of flocculation tanks and secondary air-floatation case that secondary air-floatation system includes being sequentially connected
Body；The one-level air supporting casing is connected to two grades of regulating reservoirs by an intermediate buffering pond；The ozone dissolving is respectively connecting to
One-level air supporting casing and secondary air-floatation casing；The discharge bay is connected to secondary air-floatation casing；
Waste water passes sequentially through one-level regulating reservoir, one-level coagulating basin, one-level flocculation tank, one-level air supporting casing, intermediate buffering, two
Level regulating reservoir, two-stage coagulation pond, two grades of flocculation tanks and secondary air-floatation casing, are most discharged through discharge bay afterwards；
Wherein, one-level air supporting from anionic PAM act on water cationic non-solubility pollutant, secondary air-floatation using sun from
Anion non-solubility pollutant in subtype PAM effect water；Simultaneously in one, two two-stage air supporting, it is passed through by ozone dissolving
Ozone removes dissolubility and partial solubility pollutant in water removal.
2. the method that tandem integral type air supporting as claimed in claim 1 removes COD in citrus waste water, it is characterised in that：It is described
Slag scraping mechanism is equipped with one-level air supporting casing and secondary air-floatation casing.
3. the method that tandem integral type air supporting as claimed in claim 1 removes COD in citrus waste water, it is characterised in that：It is described
PAC addition is that 3~10wt%, PAM addition are 0.05~0.5wt%, 0.2~0.4MPa of ozone generating capacity.
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| CN201710494332.3A CN107032536A (en) | 2017-06-26 | 2017-06-26 | A kind of method that tandem integral type air supporting removes COD in citrus waste water |
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| CN201710494332.3A CN107032536A (en) | 2017-06-26 | 2017-06-26 | A kind of method that tandem integral type air supporting removes COD in citrus waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397459A (en) * | 2021-05-18 | 2021-09-17 | 浙江师范大学 | Capsule type medical device control system and method based on electromechanical integration |
| CN114315034A (en) * | 2021-12-30 | 2022-04-12 | 华夏碧水环保科技有限公司 | Lemon processing wastewater treatment system and process |
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| KR100606555B1 (en) * | 2005-03-11 | 2006-08-01 | 한국수자원공사 | A method and device of multi-functional high efficiency drinking water treatment using ozone flotation combined with gac filter |
| CN202297312U (en) * | 2011-10-28 | 2012-07-04 | 鞍钢集团工程技术有限公司 | Cold rolling waste water treatment system |
| CN106277310A (en) * | 2016-10-11 | 2017-01-04 | 临邑禹王植物蛋白有限公司 | A kind of growing method of the anaerobic grain sludge for albumen wastewater treatment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397459A (en) * | 2021-05-18 | 2021-09-17 | 浙江师范大学 | Capsule type medical device control system and method based on electromechanical integration |
| CN114315034A (en) * | 2021-12-30 | 2022-04-12 | 华夏碧水环保科技有限公司 | Lemon processing wastewater treatment system and process |
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Application publication date: 20170811 |