CN105461162A - Starch wastewater treatment method - Google Patents
Starch wastewater treatment method Download PDFInfo
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- CN105461162A CN105461162A CN201510820543.2A CN201510820543A CN105461162A CN 105461162 A CN105461162 A CN 105461162A CN 201510820543 A CN201510820543 A CN 201510820543A CN 105461162 A CN105461162 A CN 105461162A
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- wastewater treatment
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- preaeration
- anaerobic reactor
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Abstract
The invention relates to a starch wastewater treatment method. The method is characterized by comprising the following steps: 1) discharging production wastewater into an adjusting tank through a mechanical grid, continuously stirring through a stirring device in the adjusting tank to prevent deposition, introducing water current into an air floatation tank and simultaneously adding flocculants polyaluminum chloride and polyacrylamide; and 2) letting an effluent from the air floatation tank flow into an anaerobic reactor, adjusting operation pH value of the anaerobic reactor to 7-8, discharging sludge generated by the anaerobic reactor into a sludge concentration basin, letting an effluent flow into a preaeration sedimentation basin, letting an effluent from the preaeration sedimentation basin enter a SBR reactor and carrying out aerobic biological treatment, and discharging sludge from the preaeration sedimentation basin and a SBR reaction tank into the sludge concentration basin. The method has a good wastewater treatment effect, and cost is reduced.
Description
Technical field
The present invention relates to technical field of waste water processing, specifically a kind of starch wastewater treatment method.
Background technology
Starch industry is with corn, potato, wheat, the agricultural-food such as rice are raw material production starch or starch deep processed product (β-amylose, glucose, starch derivative etc.) industry, in process of production, water requirement is very large, wastewater discharge is also large, and waste water is all containing much starch, protein, carbohydrate, the organic high concentrated organic wastewaters such as fat, the dissolved oxygen in water is consumed rapidly after entering water body, cause water hypoxia and affect the existence of fish and other hydrocoles, in waste water, suspended substance easily under anaerobic decomposes generation foul smell simultaneously, worsen water quality, add China's starch producing technology backwardness relatively, the utilization ratio of resource is lower, vegetable-proteins a large amount of in starch production process does not add utilization and discharges with factory effluent, not only have impact on environmental health, and cause huge waste.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of good waste water treatment effect, the starch wastewater treatment method reduced costs.
The technical solution adopted in the present invention is: provide a kind of starch wastewater treatment method, comprise the following steps:
1) factory effluent is disposed in equalizing tank through mechanical grille, prevents precipitation by the whipping appts Keep agitation in equalizing tank, then current are introduced air flotation pool, add flocculant poly aluminum chloride and polyacrylamide simultaneously;
2) air flotation pool water outlet flows into anaerobic reactor, regulating anaerobic reactor to run pH value is 7-8, anaerobic reactor produces mud and enters sludge thickener, water outlet then flows into preaeration settling tank, the water outlet of pre-exposure settling tank flows in sbr reactor device carries out Aerobic biological process, and the mud in preaeration settling tank and sbr reactor pond all enters sludge thickener;
3) mud enters between sludge dewatering and carries out mechanical dehydration after concentrated, the mud cake outward transport of generation, and sludge thickener supernatant and mechanism filter-pressing liquid are back to and regulate settling tank to continue process again;
As preferably, described polymerize aluminum chloride is mixed with the aqueous solution that concentration is 5%-10%, and add-on is the 1%-2% of wastewater flow rate, and polyacrylamide is mixed with the aqueous solution of 0.05%-0.1%, adds the 2%-4% that people's amount is wastewater flow rate.
As preferably, the effluent trough of described equalizing tank is diagonally arranged, and waste water is entered in pond by the left and right sides.
As preferably, backflow and water inlet after 20% pressure air-dissolving of the water outlet total Water of sbr reactor device are mixed into air flotation pool.
As preferably, adopt the parallel running of two sbr reactor devices.
Starch wastewater treatment method provided by the invention produces methane in the process processed waste water, can as the energy for production, life after collection and purification process, and the successful of wastewater treatment, reaches discharging standards, and cost is lower.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Starch wastewater treatment method of the present invention, comprises the following steps:
1) factory effluent is disposed in equalizing tank through mechanical grille, prevents precipitation by the whipping appts Keep agitation in equalizing tank, then current are introduced air flotation pool, add flocculant poly aluminum chloride and polyacrylamide simultaneously;
2) air flotation pool water outlet flows into anaerobic reactor, regulating anaerobic reactor to run pH value is 7-8, anaerobic reactor produces mud and enters sludge thickener, water outlet then flows into preaeration settling tank, the water outlet of pre-exposure settling tank flows in sbr reactor device carries out Aerobic biological process, and the mud in preaeration settling tank and sbr reactor pond all enters sludge thickener;
3) mud enters between sludge dewatering and carries out mechanical dehydration after concentrated, the mud cake outward transport of generation, and sludge thickener supernatant and mechanism filter-pressing liquid are back to and regulate settling tank to continue process again;
In the specific implementation, polymerize aluminum chloride is mixed with the aqueous solution that concentration is 5%-10% in the present invention, and add-on is the 1%-2% of wastewater flow rate, and polyacrylamide is mixed with the aqueous solution of 0.05%-0.1%, adds the 2%-4% that people's amount is wastewater flow rate; The effluent trough of equalizing tank is diagonally arranged, waste water enters in pond by the left and right sides, owing to containing a large amount of suspended matters in starch wastewater, consider a large amount of vegetable-proteins that will reclaim in waste water, mechanical stirring device established by equalizing tank, stoped the precipitation of suspended matter in waste water by mechanical agitation, equalizing tank adopts skeleton construction.
Anaerobic reactor adopts semi-underground type skeleton construction, and in order to meet anaerobic state in pond and prevent foul smell dissipation, anaerobic reactor top adopts cover plate for sealing, and rising pipe and escape pipe establish water seal arrangement respectively.
Consider the continuity into water, adopt the parallel running of two sbr reactor devices, after a reaction tank has been intake, stop water inlet, when carrying out the techniques such as aeration, precipitation, water outlet, another reaction tank is intake.
Anaerobic reactor should drop into lime and regulate pH value in 7 ~ 8 scopes when starting and starting, after progressively regulate pH value with effluent recycling, control effluent recycling than for 1:0.5, when water outlet CODcr clearance reaches 80%, then increase flooding quantity and water inlet frequency.
Backflow and water inlet after 20% pressure air-dissolving of the water outlet total Water of sbr reactor device can be mixed into air flotation pool in the present invention.
The present invention's postrun water outlet detected result is as follows:
Processing unit CODcr (mg/L) BOD (mg/L) SS (mg/L)
Air flotation pool 65764327.565.8
Anaerobic reactor 765354.567.6
Preaeration settling tank 657.5289.559.1
Sbr reactor device 81.226.756.3
Claims (5)
1. a starch wastewater treatment method, is characterized in that comprising the following steps:
1) factory effluent is disposed in equalizing tank through mechanical grille, prevents precipitation by the whipping appts Keep agitation in equalizing tank, then current are introduced air flotation pool, add flocculant poly aluminum chloride and polyacrylamide simultaneously;
2) air flotation pool water outlet flows into anaerobic reactor, regulating anaerobic reactor to run pH value is 7-8, anaerobic reactor produces mud and enters sludge thickener, water outlet then flows into preaeration settling tank, the water outlet of pre-exposure settling tank flows in sbr reactor device carries out Aerobic biological process, and the mud in preaeration settling tank and sbr reactor pond all enters sludge thickener;
3) mud enters between sludge dewatering and carries out mechanical dehydration after concentrated, the mud cake outward transport of generation, and sludge thickener supernatant and mechanism filter-pressing liquid are back to and regulate settling tank to continue process again.
2. starch wastewater treatment method according to claim 1, it is characterized in that: described polymerize aluminum chloride is mixed with the aqueous solution that concentration is 5%-10%, add-on is the 1%-2% of wastewater flow rate, polyacrylamide is mixed with the aqueous solution of 0.05%-0.1%, adds the 2%-4% that people's amount is wastewater flow rate.
3. starch wastewater treatment method according to claim 1, is characterized in that: the effluent trough of described equalizing tank is diagonally arranged, and waste water is entered in pond by the left and right sides.
4. starch wastewater treatment method according to claim 1, is characterized in that: backflow and water inlet after 20% pressure air-dissolving of the water outlet total Water of sbr reactor device are mixed into air flotation pool.
5. starch wastewater treatment method according to claim 1, is characterized in that: adopt the parallel running of two sbr reactor devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510820543.2A CN105461162A (en) | 2015-11-24 | 2015-11-24 | Starch wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510820543.2A CN105461162A (en) | 2015-11-24 | 2015-11-24 | Starch wastewater treatment method |
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| Publication Number | Publication Date |
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| CN105461162A true CN105461162A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510820543.2A Pending CN105461162A (en) | 2015-11-24 | 2015-11-24 | Starch wastewater treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010731A (en) * | 2017-04-27 | 2017-08-04 | 卢松 | The handling process of high concentration starch water |
| CN109956615A (en) * | 2017-12-25 | 2019-07-02 | 安徽洁之源环保科技有限公司 | Packaging printing sewage treatment process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007313504A (en) * | 2006-05-26 | 2007-12-06 | Ecodays Co Ltd | Apparatus for treating waste water and method therefor |
| CN101486521A (en) * | 2008-01-18 | 2009-07-22 | 隋建青 | Method for treating starch wastewater by administration air-float-UASB-SBR |
| CN102249498A (en) * | 2011-07-13 | 2011-11-23 | 华北水利水电学院 | Biochemical treatment method for waste water from small and medium-sized starch factories |
| CN202131184U (en) * | 2011-06-04 | 2012-02-01 | 广西汇泰环保科技有限公司 | Starch waste water treatment system |
| CN202369470U (en) * | 2011-11-10 | 2012-08-08 | 复旦大学 | Starch wastewater biological treatment system |
-
2015
- 2015-11-24 CN CN201510820543.2A patent/CN105461162A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007313504A (en) * | 2006-05-26 | 2007-12-06 | Ecodays Co Ltd | Apparatus for treating waste water and method therefor |
| CN101486521A (en) * | 2008-01-18 | 2009-07-22 | 隋建青 | Method for treating starch wastewater by administration air-float-UASB-SBR |
| CN202131184U (en) * | 2011-06-04 | 2012-02-01 | 广西汇泰环保科技有限公司 | Starch waste water treatment system |
| CN102249498A (en) * | 2011-07-13 | 2011-11-23 | 华北水利水电学院 | Biochemical treatment method for waste water from small and medium-sized starch factories |
| CN202369470U (en) * | 2011-11-10 | 2012-08-08 | 复旦大学 | Starch wastewater biological treatment system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010731A (en) * | 2017-04-27 | 2017-08-04 | 卢松 | The handling process of high concentration starch water |
| CN107010731B (en) * | 2017-04-27 | 2020-02-07 | 内蒙古阜丰生物科技有限公司 | Treatment process of high-concentration starch wastewater |
| CN109956615A (en) * | 2017-12-25 | 2019-07-02 | 安徽洁之源环保科技有限公司 | Packaging printing sewage treatment process |
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Application publication date: 20160406 |