CN104355406A - Bean vermicelli production wastewater treatment method - Google Patents
Bean vermicelli production wastewater treatment method Download PDFInfo
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- CN104355406A CN104355406A CN201410533576.4A CN201410533576A CN104355406A CN 104355406 A CN104355406 A CN 104355406A CN 201410533576 A CN201410533576 A CN 201410533576A CN 104355406 A CN104355406 A CN 104355406A
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Abstract
The invention relates to a bean vermicelli production wastewater treatment method, and belongs to the field of wastewater treatment methods. The bean vermicelli production wastewater treatment method comprises steps as follows: bean vermicelli production wastewater is filtered and pumped into a reactor from the bottom of the reactor, the reactor is pressurized, oxidation reaction is performed in the reactor under the pressure condition, pressure reduction and degassing are performed after the oxidation reaction is finished, the pressure inside the reactor is reduced to the normal pressure, residual air in the wastewater is blown out, meanwhile, aeration is stopped, sludge is settled, low-load oxygenolysis is performed on microorganisms by virtue of dissolved oxygen dissolved in water, nitrogen removal by denitrification is performed, and treated water is discharged out of the reactor; and the concentration of sludge in the reactor is adjusted. According to the bean vermicelli production wastewater treatment method, the treatment process is simple, practical and good in effect, and the pressurized SBR (sequencing batch reactor) method is high in biochemical reaction speed, high in organic matter removal rate and higher in load impact resistance, can change the current situation that bean vermicelli factories are small and scattered and wastewater cannot be treated in actual application, and has certain popularization and application values.
Description
Technical field
The present invention relates to a kind for the treatment of process of factory effluent of vermicelli, belong to method of wastewater treatment field.
Background technology
Bean vermicelli is one of indispensable non-staple foodstuff on popular dining table in daily life, and the waste water produced produced by bean vermicelli, although nontoxic, but harmful.Especially with the small business of assorted beans for raw material production bean vermicelli, wastewater discharge is large, concentration is high, not treated, directly discharges, and causes water body blackout, smelly environmental degradation, even polluted underground water source.With assorted beans for raw material production 1t bean vermicelli waste discharge is about 30t, COD value is 3000-3500mg/ L, main containing soluble protein and starch.
Therefore, study a kind of technique simple, easy to operate, running cost is low, and the treatment process of what treatment effect was good be applicable to medium-sized and small enterprises factory effluent of vermicelli has certain ecnomics and enviroment benefit.
Summary of the invention
The present invention aims to provide that a kind of technique is simple, and easy to operate, running cost is low, the treatment process of what treatment effect was good be applicable to medium-sized and small enterprises factory effluent of vermicelli.
The treatment process of factory effluent of vermicelli of the present invention, comprises the following steps:
Pump into the reactor being loaded with certain active sludge by sump pump from the bottom of reactor after factory effluent of vermicelli is filtered, then supercharging is carried out to reactor, in condition downhill reaction device with pressure, aeration carries out oxidizing reaction, decompression is carried out degassed after oxidizing reaction completes, pressure in reactor is reduced to normal pressure gradually, surplus air in blowout waste water, stop aeration simultaneously, start sludge settling, microorganism utilizes the dissolved oxygen be dissolved in water to carry out the oxygenolysis of underload, anoxic is proceeded to gradually by aerobic, start denitrification denitrogenation to occur, treated water discharges reactor, be the water outlet handling qualified discharge well.Adjust the sludge concentration in reactor, to make to enter next treatment cycle simultaneously.
Preferably, reactor of the present invention is pressurized to 0.2MPa.
Preferred, activated sludge concentration of the present invention controls at 5-6g/L.
Preferred further, aerating oxidation reaction times 2h of the present invention, the anoxic denitrification denitrification reaction time is 4-6h.
Treatment process of the present invention, pressurization SBR method is adopted to process waste water, pressurization SBR method is carried out in a reactor at the processes such as a heavy pond, aeration tank, biological denitrificaion and sludge aerobic stabilization treatment, the pressurization activated sludge process of intermittent drainage loop cycle, complete cycle comprises following working stage: (1) fill phase, and reactor injects supercharging after waste water; (2) the pressurized aeration stage, the oxidized decomposition of BOD5 in reactor oxygenation under condition with pressure, waste water, Simultaneous Nitrification process occurs; (3) reduce pressure deaeration stage, and in reactor, pressure is reduced to normal pressure gradually, surplus air in blowout waste water; (4) precipitate phase, stop aeration, sludge settling, water to become clear, microorganism utilizes the dissolved oxygen be dissolved in water to carry out the oxygenolysis of underload, proceeds to anoxic gradually by aerobic; (5) water smoking, be in anoxic or anaerobic state, denitrification denitrogenation occurs, treated water discharges reactor; (6) adjusting stage, adjustment sludge concentration, to make to enter next cycle.
In method of the present invention, active sludge is after cultivating domestication, system enters stable running status, and at steady state, hydraulic detention time HRT is major influence factors to COD clearance, at working pressure 200kPa, identical flooding quantity, by different residence time sampling and measuring COD, result shows, influent COD is 3000mg/L, the residence time is aerating oxidation reaction times 2h, the anoxic denitrification denitrification reaction time be 4h altogether 6h water outlet COD value be less than 100 mg/L; Influent COD is 3500mg/L, and the residence time is aerating oxidation reaction times 2h, the anoxic denitrification denitrification reaction time is 6h 8h altogether, and water outlet COD value is less than 100mg/L, reaches the emission standard of national regulation.
With the analogy analysis of common SBR method, the oxygen supply at ambient pressure of common SBR method, oxygenation capacity is limited, thus sludge concentration can not be too high, the biological activity of microorganism is low, biochemical reaction speed is slow, the residence time is long, when there is larger fluctuation in influent COD, larger load impact is caused to active sludge, Sludge Property is degenerated thus COD clearance is declined, and SBR method of pressurizeing adopts pressure breathing oxygen mode, sufficient oxygen supply makes sludge concentration in reactor high, biological activity is large, therefore, volumetric loading, sludge loading is all very high, and there is very strong shock-resistant ability, so make processing efficiency increase substantially.
The treatment process of factory effluent of vermicelli of the present invention, adopt the waste water that the process of pressurization SBR method produces for raw material production bean vermicelli with assorted beans, influent COD is 3000-3500mg/L, the residence time is 6-8h, water outlet COD is less than 100mg/L, reach the emission standard of national regulation, it is simple that the method has treatment process, practical, effective, compared with common SBR method, it is fast that pressurization SBR method has biochemical reaction speed, organic removal rate is high, resistance to overload shock ability is stronger, bean vermicelli factory can be solved in actual applications little, and dispersion, the present situation that waste water cannot process, there is certain application value.
Embodiment
Embodiment one:
To be pumped into from the bottom of reactor by sump pump after factory effluent of vermicelli is filtered and be loaded with activated sludge concentration and control the reactor of 5-6g/L, then 0.2MPa is pressurized to reactor, in condition downhill reaction device with pressure, aeration carries out oxidizing reaction 2h, decompression is carried out degassed after oxidizing reaction completes, pressure in reactor is reduced to normal pressure gradually, surplus air in blowout waste water, stop aeration simultaneously, start sludge settling, microorganism utilizes the dissolved oxygen be dissolved in water to carry out the oxygenolysis of underload, anoxic is proceeded to gradually by aerobic, start denitrification denitrogenation to occur, after reaction 4-6h, treated water discharges reactor, be the water outlet handling qualified discharge well.Adjust the sludge concentration in reactor, to make to enter next treatment cycle simultaneously.
Embodiment two: treatment effect one
Use the treatment process of factory effluent of vermicelli of the present invention, process the factory effluent of vermicelli of certain small-sized bean vermicelli manufacturing enterprise, the treatment time is 6h, and treatment effect as shown in Table-1.
Table-1 treatment effect
Embodiment three: treatment effect two
Use the treatment process of factory effluent of vermicelli of the present invention, process the factory effluent of vermicelli of certain small-sized bean vermicelli manufacturing enterprise, the treatment time is 8h, and treatment effect is as shown in table-2.
Table-2 treatment effects
。
Claims (4)
1. the treatment process of factory effluent of vermicelli, comprises the following steps:
Pump into the reactor being loaded with certain active sludge by sump pump from the bottom of reactor after factory effluent of vermicelli is filtered, then supercharging is carried out to reactor, in condition downhill reaction device with pressure, aeration carries out oxidizing reaction, decompression is carried out degassed after oxidizing reaction completes, pressure in reactor is reduced to normal pressure gradually, surplus air in blowout waste water, stop aeration simultaneously, start sludge settling, microorganism utilizes the dissolved oxygen be dissolved in water to carry out the oxygenolysis of underload, anoxic is proceeded to gradually by aerobic, start denitrification denitrogenation to occur, treated water discharges reactor, be the water outlet handling qualified discharge well, adjust the sludge concentration in reactor, to make to enter next treatment cycle simultaneously.
2. the treatment process of factory effluent of vermicelli as claimed in claim 1, is characterized in that described reactor is pressurized to 0.2MPa.
3. the treatment process of factory effluent of vermicelli as claimed in claim 1, is characterized in that described activated sludge concentration controls at 5-6g/L.
4. the treatment process of factory effluent of vermicelli as claimed in claim 1, it is characterized in that described aerating oxidation reaction times 2h, the anoxic denitrification denitrification reaction time is 4-6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533576.4A CN104355406A (en) | 2014-10-11 | 2014-10-11 | Bean vermicelli production wastewater treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533576.4A CN104355406A (en) | 2014-10-11 | 2014-10-11 | Bean vermicelli production wastewater treatment method |
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| CN104355406A true CN104355406A (en) | 2015-02-18 |
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| CN201410533576.4A Pending CN104355406A (en) | 2014-10-11 | 2014-10-11 | Bean vermicelli production wastewater treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152475A (en) * | 2015-09-06 | 2015-12-16 | 总装备部工程设计研究总院 | South residential area sewage disposal system and method |
| CN105236593A (en) * | 2015-11-13 | 2016-01-13 | 济南昊泽环保科技有限公司 | Waste water treatment agent for bean vermicelli production enterprise and waste water treatment method |
-
2014
- 2014-10-11 CN CN201410533576.4A patent/CN104355406A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152475A (en) * | 2015-09-06 | 2015-12-16 | 总装备部工程设计研究总院 | South residential area sewage disposal system and method |
| CN105236593A (en) * | 2015-11-13 | 2016-01-13 | 济南昊泽环保科技有限公司 | Waste water treatment agent for bean vermicelli production enterprise and waste water treatment method |
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Application publication date: 20150218 |
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| WD01 | Invention patent application deemed withdrawn after publication |