CN112759183A - Method for treating corn starch processing wastewater - Google Patents
Method for treating corn starch processing wastewater Download PDFInfo
- Publication number
- CN112759183A CN112759183A CN202011494451.7A CN202011494451A CN112759183A CN 112759183 A CN112759183 A CN 112759183A CN 202011494451 A CN202011494451 A CN 202011494451A CN 112759183 A CN112759183 A CN 112759183A
- Authority
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- China
- Prior art keywords
- corn starch
- filter
- water
- starch processing
- fresh water
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Links
- 229920002261 Corn starch Polymers 0.000 title claims abstract description 23
- 239000008120 corn starch Substances 0.000 title claims abstract description 23
- 239000002351 wastewater Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 239000013505 freshwater Substances 0.000 claims abstract description 18
- 239000012466 permeate Substances 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 7
- 230000001580 bacterial effect Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 6
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 6
- 239000003830 anthracite Substances 0.000 claims description 6
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002223 garnet Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/481—Treatment of water, waste water, or sewage with magnetic or electric fields using permanent magnets
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/08—Aerobic processes using moving contact bodies
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1257—Oxidation ditches
Abstract
The invention discloses a method for treating corn starch processing wastewater, which comprises the following steps: filtering the corn starch processing wastewater collected in the water collecting tank by a multi-media filter and a cartridge filter in sequence, and separating by a membrane module to obtain fresh water and concentrated water; fresh water is introduced into a moving bed biofilm reactor which is subjected to bacterial culture and forms a biofilm on a filler for reaction, and then is input into an oxidation ditch for reaction, and the fresh water is discharged after reaching the standard; separating the concentrated water through a sand filter to obtain permeate and sludge, and introducing the permeate into a water collecting tank. The method can remove organic matters and inorganic matters in the corn starch processing wastewater, so that the corn starch processing wastewater is effectively treated. And separating the treated concentrated water by a sand filter to obtain permeate and sludge. Fresh water is fed into the oxidation ditch through the moving bed biofilm reactor, can continuously run without blockage and back flushing, and can be discharged after reaching the standard, thereby achieving the aim of environmental protection.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a treatment method of corn starch processing wastewater.
Background
The waste water produced in the corn starch processing and refining process contains sodium sulfate and corn starch, belongs to high-concentration organic waste water, and is one of the main pollution sources causing environmental pollution. The main pollutants of the corn starch wastewater comprise suspended matters, chemical oxygen demand, ammonia nitrogen, total phosphorus and the like, the wastewater generally has no toxicity, but COD can reach more than 80000mg/L, turbidity can reach more than 500NTU, and the direct discharge can pollute water sources. The industrial wastewater treatment method is various, including physical, chemical and biological methods, the wastewater has inhibition effect on biochemical reaction due to high COD and high salt content, the existing corn starch wastewater treatment technology is complex in equipment, the treatment effect is not ideal, some heavy metal substances cannot be removed, the investment cost for salt removal and concentration is high, and the economic benefit is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method for treating the corn starch processing wastewater, which can effectively separate organic matters and inorganic matters of the corn starch processing wastewater and realize standard discharge of the corn starch processing wastewater.
The technical scheme of the invention is summarized as follows:
a method for treating corn starch processing wastewater comprises the following steps:
(1) filtering the corn starch processing wastewater collected in the water collecting tank 1 by a multi-media filter 2 and a cartridge filter 3 in sequence, and separating by a membrane component 4 to obtain fresh water and concentrated water;
(2) introducing the fresh water into a moving bed biofilm reactor 5 which is subjected to bacterial culture and forms a biofilm on a filler for reaction, and then inputting the fresh water into an oxidation ditch 6 for reaction, so that the fresh water is discharged after reaching the standard; the concentrated water passes through a sand filter 7 to be separated to obtain permeate and sludge, and the permeate is introduced into the water collecting tank 1.
The filter material in the multi-medium filter 2 is at least two of quartz sand, anthracite, activated carbon, magnetite, garnet, porous ceramic and plastic balls.
Preferably, the mass ratio of the filter material in the multi-media filter is 1: 1: 1 quartz sand, magnetite and anthracite, which are arranged from top to bottom in sequence.
The membrane component 4 is a curtain-type membrane component, and the membrane is made of polyvinylidene fluoride.
The filler of the moving bed biofilm reactor is polyethylene or polypropylene.
Advantageous effects
1. The method can remove organic matters and inorganic matters in the corn starch processing wastewater, so that the corn starch processing wastewater is effectively treated.
2. And separating the treated concentrated water by a sand filter to obtain permeate and sludge. Fresh water is fed into the oxidation ditch through the moving bed biofilm reactor, can continuously run without blockage and back flushing, and can be discharged after reaching the standard, thereby achieving the aim of environmental protection.
Drawings
FIG. 1 is a process flow diagram of the method of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples:
example 1
A method for treating wastewater from corn starch processing (see fig. 1), comprising the steps of:
(1) filtering the corn starch processing wastewater collected in the water collecting tank 1 by a multi-media filter 2 and a cartridge filter 3 in sequence, and separating by a membrane component 4 (a curtain-type membrane component, wherein the membrane is made of polyvinylidene fluoride, and the weight-average molecular weight of the polyvinylidene fluoride is 15.2 ten thousand) to obtain fresh water and concentrated water;
(2) introducing the fresh water into a moving bed biofilm reactor 5 which is subjected to bacterial culture and forms a biofilm on a filler (polyethylene with the weight-average molecular weight of 12 ten thousand) for reaction, inputting the reaction product into an oxidation ditch for reaction, and discharging the reaction product after reaching the standard; the concentrated water passes through a sand filter 7 to be separated to obtain permeate and sludge, and the permeate is introduced into the water collecting tank 1.
The mass ratio of the filter materials in the multi-media filter of the embodiment is 1: 1: 1 quartz sand, magnetite and anthracite, which are arranged from top to bottom in sequence.
The membrane module 4 may also be selected from other membrane modules such as roll-up membrane and flat membrane, and the membrane is preferably a commercial hydrophilic ultrafiltration membrane with excellent organic pollution resistance, and is made of polyvinylidene fluoride, preferably polyvinylidene fluoride with the weight average molecular weight of 15.2 ten thousand.
The preferred specific gravity of the filler of the moving bed biofilm reactor is 1.0g/cm3Polyethylene having a large specific surface area and a weight average molecular weight of 12 ten thousand or polypropylene having a weight average molecular weight of 15 ten thousand, and the filler is preferably polyethylene.
The filter material in the multi-medium filter can also be at least two of quartz sand, anthracite, activated carbon, magnetite, garnet, porous ceramic and plastic balls.
The security filter is a commercial product.
Oxidation trenches are well known in the art.
When the device works, the corn starch processing wastewater is sent into a water collecting tank for collection, is sent into a multi-medium filter by a water pump for solid-liquid separation, passes through a security filter, and is separated by a membrane component to obtain fresh water and concentrated water;
the separated fresh water is introduced into a moving bed biofilm reactor which is subjected to bacterial culture and biofilm formation on a filler of the moving bed biofilm reactor, the biofilm formed on the filler is utilized to promote mass propagation and growth of nitrobacteria in the sludge on the biofilm, the separated residual organic pollutants in the fresh water are degraded, and the better denitrification effect is achieved; and separating the concentrated water through a sand filter to obtain permeate and sludge, and introducing the permeate into a water collecting tank.
The standard is as follows: discharge Standard of Water pollutants for starch industry (GB25461-2010)
The present invention is not limited to the above embodiments, and based on the technical solutions of the present disclosure, those skilled in the art may make some substitutions and modifications on some technical features according to the technical contents disclosed, and these substitutions and modifications are all within the protective scope of the present invention.
Claims (5)
1. A method for treating corn starch processing wastewater is characterized by comprising the following steps:
(1) filtering the corn starch processing wastewater collected in the water collecting tank (1) through a multi-media filter (2) and a cartridge filter (3) in sequence, and separating through a membrane component (4) to obtain fresh water and concentrated water;
(2) introducing the fresh water into a moving bed biofilm reactor (5) which is subjected to bacterial culture and forms a biofilm on a filler for reaction, and then inputting the fresh water into an oxidation ditch (6) for reaction, so that the fresh water is discharged after reaching the standard; and the concentrated water passes through a sand filter (7) to be separated to obtain permeate and sludge, and the permeate is introduced into the water collecting tank (1).
2. The method as claimed in claim 1, characterized in that the filter material in the multimedia filter (2) is at least two of quartz sand, anthracite, activated carbon, magnetite, garnet, porous ceramic and plastic balls.
3. A method according to claim 3, characterized in that the mass ratio of the filter material in the multimedia filter (2) is 1: 1: 1 quartz sand, magnetite and anthracite, which are arranged from top to bottom in sequence.
4. The method according to claim 1, characterized in that the membrane module (4) is a curtain membrane module, the membrane material being polyvinylidene fluoride.
5. The process according to claim 1, characterized in that the packing of the moving bed biofilm reactor is polyethylene or polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494451.7A CN112759183A (en) | 2020-12-17 | 2020-12-17 | Method for treating corn starch processing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494451.7A CN112759183A (en) | 2020-12-17 | 2020-12-17 | Method for treating corn starch processing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112759183A true CN112759183A (en) | 2021-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011494451.7A Pending CN112759183A (en) | 2020-12-17 | 2020-12-17 | Method for treating corn starch processing wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN112759183A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074141A (en) * | 2007-06-20 | 2007-11-21 | 大连春兴水处理科技发展有限公司 | Process for regenerating, recovering and reutilizing low-concentration organic waste water |
| CN101723551A (en) * | 2009-12-10 | 2010-06-09 | 上海宝钢化工有限公司 | Method for treating recycling of coking wastewater |
| US20110079554A1 (en) * | 2008-04-08 | 2011-04-07 | Nanjing University | Method for treating mixed wastewater from pharmaceutical chemical industry park |
| CN102976552A (en) * | 2012-11-19 | 2013-03-20 | 四川大学 | Method for deep treatment on difficultly-degraded organic nitrogen-containing industrial wastewater |
| CN105330060A (en) * | 2015-11-05 | 2016-02-17 | 四川新能水处理工程有限公司 | Graphene wastewater treating and recycling system and treating and recycling technology thereof |
-
2020
- 2020-12-17 CN CN202011494451.7A patent/CN112759183A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074141A (en) * | 2007-06-20 | 2007-11-21 | 大连春兴水处理科技发展有限公司 | Process for regenerating, recovering and reutilizing low-concentration organic waste water |
| US20110079554A1 (en) * | 2008-04-08 | 2011-04-07 | Nanjing University | Method for treating mixed wastewater from pharmaceutical chemical industry park |
| CN101723551A (en) * | 2009-12-10 | 2010-06-09 | 上海宝钢化工有限公司 | Method for treating recycling of coking wastewater |
| CN102976552A (en) * | 2012-11-19 | 2013-03-20 | 四川大学 | Method for deep treatment on difficultly-degraded organic nitrogen-containing industrial wastewater |
| CN105330060A (en) * | 2015-11-05 | 2016-02-17 | 四川新能水处理工程有限公司 | Graphene wastewater treating and recycling system and treating and recycling technology thereof |
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Application publication date: 20210507 |