CN104386887B - A kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment - Google Patents
A kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment Download PDFInfo
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- CN104386887B CN104386887B CN201410776251.9A CN201410776251A CN104386887B CN 104386887 B CN104386887 B CN 104386887B CN 201410776251 A CN201410776251 A CN 201410776251A CN 104386887 B CN104386887 B CN 104386887B
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- 235000013527 bean curd Nutrition 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000002351 wastewater Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 35
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims abstract description 5
- 238000005273 aeration Methods 0.000 claims description 11
- 238000002203 pretreatment Methods 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000011109 contamination Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- -1 step 3 Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000010786 composite waste Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000256113 Culicidae Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present invention relates to a kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment, belong to field of waste water treatment, in order to overcome the difficulty that existing process bean curd factory effluent method exists for small business, this equipment comprises controller, with the equalizing tank of grid, SBR pond, first magnetic valve, by the pneumatic pump of the inner UNICOM of inlet pipe and SBR pond, be arranged on protruded packing and the water level sensor of inside, SBR pond, be arranged on the bed course bottom SBR pond, be arranged on the water port bottom SBR pond, second magnetic valve of the outlet switch in control SBR pond, the making material of the bed course bottom SBR pond is coarse material.Equipment in the present invention is easy to operate, simple for process, cost is low, effective, there is the double benefit of environment and society, be applicable to very much the bean curd factory effluent of the little water yield, can be used by small business, also can be applicable to the process of other high-concentration waste waters, have a good application prospect.
Description
Technical field
The invention belongs to field of waste water treatment, be specifically related to a kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment.
Background technology
Bean curd is the daily food of people, but can produce a large amount of waste water in its making processes, and the ratio of unit mass tofu product and waste discharge of it is generally acknowledged, at more than 1:10, is namely produced 1kg bean curd and at least produced 10L waste water.Due on market more than 50% bean curd produced by the bean curd workshop waste water being distributed in fringe area, the waste water water yield is small and scattered, but pollution level is high, discharging modes are mostly direct discharges, its consequence one is the increase in the load of municipal wastewater pipe network, and two is easily produce foul smell, grow mosquitos and flies and affect surrounding environment and human health.Waste water mainly soaking bean water, yellow seriflux and workshop wash-down water is produced in soybean curd production process.Bean curd factory effluent contains wherein containing a large amount of nutritive substances such as protein, fat, starch, from sewage disposal angle, the bean curd factory effluent water-quality guideline scope of discharge is: CODcr (dichromate index) content is at 2000-20000mg/L, BOD5 (dissolved oxygen content of consumption) content is at 800-12000mg/L, it is a kind of high concentrated organic wastewater, but nontoxic, be applicable to biological treatment.
Mainly adopt Biochemical method bean curd factory effluent both at home and abroad at present, mainly contain Anaerobic biotreatment method, aerobic treatment method and sequence bioreactor method (SBR), due to sequence bioreactor method (SBR) have intermittent operation, aerobic-anaerobic alternately, the feature such as denitrogenation dephosphorizing, be applicable to very much the Drainage feature of tofu wastewater.Aforesaid method all has employing in mass-producing bean product manufacturing enterprise; with good conditionsily also carry out the recovery of the useful matteies such as soybean protein; because sewage disposal is a systems engineering; the wastewater flow rate of process is large; be more common in as large-lot producer, but simultaneously high to the requirement of equipment and personnel, these processing units are directly used in soybean curd factory effluent; owing to being difficult to the centralized collection realizing small-scale waste water, effect of equipment can not be given full play to.For small business (water displacement≤1 ton/day), due to lack of money and skills, introduce suite of equipment and add cost, say nothing of and recycled, the wastewater flow rate of small business's generation is simultaneously little, but directly can not enter water drain, otherwise easily cause putrid fermentation even sewer blockage affect surrounding environment.
Summary of the invention
In order to overcome the difficulty that existing process bean curd factory effluent method exists for small business, the invention provides a kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment.
Technical scheme of the present invention is: a kind of equipment of bean curd factory effluent minitype direct exhaust type biological treatment, this equipment comprises the equalizing tank with grid, SBR pond, connect the first magnetic valve of equalizing tank water outlet and SBR pond water-in, by the pneumatic pump of the inner UNICOM of inlet pipe and SBR pond, be arranged on the water level sensor of inside, SBR pond, be arranged on the bed course bottom SBR pond, be arranged on the water port bottom SBR pond, second magnetic valve of the outlet switch in control SBR pond, be connected with water level sensor and control the controller of the first magnetic valve and the second magnetic valve, the making material of the bed course bottom SBR pond is coarse material.
On described grid, the diameter of perforate is less than 1 millimeter.
The volume of described equalizing tank is greater than 1 cubic metre.
Inside, described SBR pond is also provided with protruded packing, and protruded packing is hollow ball shape filler, and it is fixedly installed on around water port.
Described water port is arranged at the central position bottom SBR pond, is elevated by the aperture position of water port.
Raise the gradient of 2% from the center to wall at the bottom of pond, described SBR pond.
A kind of bean curd factory effluent minitype direct exhaust type biological treatment, the treating processes of this technique is divided into the main process of pre-treatment and SBR pond two processes sequentially, and wherein, the main process main flow in SBR pond comprises: water inlet, aeration, precipitation, draining and leave unused.
The idiographic flow of this technique is as follows: step 1, first closed electromagnetic valve, step 2, bean curd is produced the waste water produced and is flowed into equalizing tank by the grid of the macrobead thing in the lower waste water of obstruction and major diameter impurity, step 3, waste water carries out the pre-treatment of contamination precipitation in equalizing tank, step 4, after pre-treatment completes, controller controls the first magnetic valve and opens, waste water enters SBR pond by equalizing tank water outlet, step 5, after water level sensor in SBR pond senses that the waste water in SBR pond reaches designated water level, controller controls the first closed electromagnetic valve, control pneumatic pump with Time Controller to open, Air Exposure is carried out to the waste water in SBR pond, step 6, after Air Exposure, it is out of service that controller controls pneumatic pump, waste water in SBR pond enters sedimentation time, step 7, after precipitation, controller controls the second magnetic valve and opens, start draining, step 8, after draining completes, controller controls the second closed electromagnetic valve, return step 2.
The time of described Air Exposure is 2 hours.
Described sedimentation time is 1 hour.
Beneficial effect of the present invention is: the equipment in the present invention is easy to operate, simple for process, cost is low, effective, there is the double benefit of environment and society, be applicable to very much the bean curd factory effluent of the little water yield (< 1 ton), can be used by small business, also can be applicable to the process of other high-concentration waste waters, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of specific embodiment of the invention bean curd factory effluent minitype direct exhaust type biological treating equipment;
In figure, 1 is grid, and 2 is equalizing tank, and 3 is the first magnetic valve, and 4 is SBR pond, and 5 is pneumatic pump, and 6 is hollow ball shape filler, and 7 is water port, and 8 is bed course, and 9 is the second magnetic valve.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and principle of work, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
As shown in Figure 1, a kind of equipment of bean curd factory effluent minitype direct exhaust type biological treatment, this equipment comprises the equalizing tank 2 with grid 1, SBR (sequence bioreactor method) pond 4, connect the first magnetic valve 3 of equalizing tank 2 water outlet and SBR pond 4 water-in, by the pneumatic pump 5 of the inner UNICOM of inlet pipe and SBR pond 4, be arranged on hollow ball shape filler 6 and the water level sensor of inside, SBR pond 4, be arranged on the bed course 8 bottom SBR pond 4, be arranged on the water port 7 bottom SBR pond 4, second magnetic valve 9 of water port 7 switch in control SBR pond 4, be connected with water level sensor and control the controller of the first magnetic valve 3 and the second magnetic valve 9.In order to tackle macrobead thing in waste water and major diameter impurity, on described grid 1, the diameter of perforate is less than 1 millimeter.Because the soybean curd factory general waste water generation stage is comparatively concentrated, in order to hold waste water, the volume size of equalizing tank 2 will guarantee to hold the soybean curd factory wastewater flow rate of a day, and water displacement≤1 of soybean curd factory ton/day, therefore the volume of equalizing tank 2 is greater than 1 cubic metre.Flow rate of water flow during in order to strengthen the absorption of microorganism and slow down draining, the making material of the bed course 8 bottom SBR pond 4 is coarse material, when carrying out draining, the bed course 8 that coarse material makes also can make mud not easily be taken away by current, meanwhile, partial sludge of initially having drained serves again the effect that microorganism upgrades.In order to increase the adhesion effect of microorganism, secondary buffer and absorption are carried out to current, further reduction mud loss, hollow ball shape filler 6 is fixedly installed on water port 7 around, water port 7 is arranged at the central position in SBR pond 4, driving the disadvantageous effect of microorganism at the bottom of pond, being elevated by the aperture position of water port 7 to slow down current further, make to have from the center to wall at the bottom of pond, SBR pond 4 certain to raise the gradient, this gradient is 2%.
After above measure, prove by experiment under the water yielding condition of low discharge, only can carry partial sludge in the water outlet of initial about 10 minutes water port 7 and run off, the aqueous suspension solids concn (MLSS) of discharging is for being greater than 3g/L, but after 10 minutes, water outlet is comparatively clarified, the water MLSS discharged is 0.75g/L, with the increase of water discharge time, the MLSS of water outlet finally keeps the value being less than 0.3g/L, thus achieves direct draining.
A kind of bean curd factory effluent minitype direct exhaust type biological treatment, the processing mode of this technique is the main process in pre-treatment and SBR pond two processes series connection, and main flow comprises: water inlet, aeration, precipitation, draining and leave unused.Idiographic flow is as follows: step 1, first magnetic valve 3 cuts out, step 2, bean curd is produced the waste water produced and is flowed into equalizing tank 2 by the grid 1 of the macrobead thing in the lower waste water of obstruction and major diameter impurity, step 3, waste water carries out pre-treatment in equalizing tank 2, pre-treatment is exactly carry out contamination precipitation to the waste water entering equalizing tank 2, be conducive to homogenizing waste water, significantly reduce the starting point concentration of organic contamination, step 4, after pre-treatment completes, controller controls the first magnetic valve 3 and opens, waste water enters SBR pond 4 by equalizing tank 2 water outlet, step 5, after water level sensor in SBR pond 4 senses that the waste water in SBR pond 4 reaches designated water level, controller controls the first magnetic valve 3 and cuts out, control pneumatic pump 5 with Time Controller to open, Air Exposure is carried out to the waste water in SBR pond 4, step 6, Air Exposure is after 2 hours, it is out of service that controller controls pneumatic pump 5, waste water in SBR pond 4 enters sedimentation time, step 7, precipitate after 1 hour, controller controls the second magnetic valve 9 and opens, start draining, step 8, after draining completes, controller controls the second magnetic valve 9 and cuts out, return step 2.
When the size in SBR pond 4 is set as 40cm × 40cm × 80cm, with one batch of wastewater flow rate (100L) for research object, at initial time, (n=5) is sampled to composite waste in equalizing tank 2 and analyze mensuration CODcr (chemical oxygen demand (COD)), again to the different aeration time period (0.5h of aeration operation, 1h, 2h, 3h, 4h, sampling of wastewater n=5 5h) in SBR pond 4 carries out analysis and measures CODcr after precipitating 1 hour, measurement result is as shown in table 1, result shows the increase along with aeration time, CODcr after precipitation is in the trend reduced gradually, through the process of 0.5 hour, clearance has reached nearly 40%, after 2 hours, effluent index meets the grade III Standard of national sewage comprehensive emission standard, as soybean curd factory, this standard directly drains into water drain than current great majority and improves many.
The Inlet and outlet water COD index (sample apart from water surface 5cm and precipitate 1h) of table 1 different aeration time bean curd factory effluent
When the size in SBR pond 4 is set as 40cm × 40cm × 80cm, with one batch of wastewater flow rate (100L) for research object, at initial time, sampling n=3 is carried out to composite waste in equalizing tank 2 and analyze mensuration SS (concentration of suspension), again to the different aeration time period (0.5h of aeration operation, 1h, 2h, 3h, 4h, 5h) water outlet of water outlet 7 is carried out sampling (n=3) analysis mensuration SS, measurement result is as shown in table 2, result shows: along with the increase of aeration time, the concentration of suspension (SS) of water outlet is in the trend reduced gradually, through the process of 0.5h, clearance is more than 30%, after 1h, water outlet meets the grade III Standard of national sewage comprehensive emission standard substantially, after 3h, water outlet naked eyes are clarified as seen substantially, and subsequent disposal effluent index keeps lower numerical value, treatment effect is stablized, ease up.
The Inlet and outlet water SS index (water outlet sampling) of table 2 different aeration time bean curd factory effluent
So the selection of time of Air Exposure is 2 hours in the present invention.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (8)
1. the equipment of a bean curd factory effluent minitype direct exhaust type biological treatment, it is characterized in that: this equipment comprises the equalizing tank (2) with grid (1), SBR pond (4), connect first magnetic valve (3) of equalizing tank (2) water outlet and SBR pond (4) water-in, by the pneumatic pump (5) of inlet pipe and SBR pond (4) inner UNICOM, be arranged on the water level sensor that SBR pond (4) is inner, be arranged on the bed course (8) of bottom, SBR pond (4), be arranged on the water port (7) of bottom, SBR pond (4), second magnetic valve (9) of water port (7) switch in control SBR pond (4), be connected with water level sensor and control the controller of the first magnetic valve (3) and the second magnetic valve (9), the making material of the bed course (8) of bottom, SBR pond (4) is coarse material, the diameter of the upper perforate of described grid (1) is less than 1 millimeter, the volume of described equalizing tank (2) is greater than 1 cubic metre.
2. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 1, it is characterized in that: described SBR pond (4) inside is also provided with protruded packing, protruded packing is hollow ball shape filler (6), and it is fixedly installed on water port (7) around.
3. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 1, it is characterized in that: described water port (7) is arranged at the central position of SBR pond (4), the inlet opens position of water port (7) in SBR pond (4) is elevated.
4. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 3, is characterized in that: raise the gradient of 2% at the bottom of described SBR pond (4) pond from the center to wall.
5. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 1-4 any one, it is characterized in that: the treating processes of the technique of described biological treating equipment is divided into the main process of pre-treatment and SBR pond two processes sequentially, wherein, the main process main flow in SBR pond comprises: water inlet, aeration, precipitation, draining and idle.
6. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 5, it is characterized in that: the idiographic flow of described technique is as follows: step 1, first magnetic valve (3) cuts out, step 2, bean curd is produced the waste water produced and is flowed into equalizing tank (2) by the grid (1) of the macrobead thing in the lower waste water of obstruction and major diameter impurity, step 3, waste water carries out the pre-treatment of contamination precipitation in equalizing tank (2), step 4, after pre-treatment completes, controller controls the first magnetic valve (3) and opens, waste water enters SBR pond (4) by equalizing tank (2) water outlet, step 5, after water level sensor in SBR pond (4) senses that the waste water in SBR pond (4) reaches designated water level, controller controls the first magnetic valve (3) and cuts out, control pneumatic pump (5) with Time Controller to open, Air Exposure is carried out to the waste water in SBR pond (4), step 6, after Air Exposure, it is out of service that controller controls pneumatic pump (5), waste water in SBR pond (4) enters sedimentation time, step 7, after precipitation, controller controls the second magnetic valve (9) and opens, start draining, step 8, after draining completes, controller controls the second magnetic valve (9) and cuts out, return step 2.
7. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 6, is characterized in that: the time of described Air Exposure is 2 hours.
8. the equipment of bean curd factory effluent minitype direct exhaust type biological treatment according to claim 6, is characterized in that: described sedimentation time is 1 hour.
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| CN201410776251.9A CN104386887B (en) | 2014-12-15 | 2014-12-15 | A kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment |
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| CN201410776251.9A CN104386887B (en) | 2014-12-15 | 2014-12-15 | A kind of bean curd factory effluent minitype direct exhaust type biological treatment and equipment |
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| CN104386887B true CN104386887B (en) | 2016-04-27 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336498A (en) * | 2011-06-28 | 2012-02-01 | 蔡志武 | Nitrogen-phosphorus wastewater treating method by sequencing batch reactor coupled photobioreactor |
| CN103382049A (en) * | 2012-11-22 | 2013-11-06 | 浙江工商大学 | Sequencing batch activated sludge reactor for sewage treatment and treatment process |
| CN204356198U (en) * | 2014-12-15 | 2015-05-27 | 安徽师范大学 | A kind of equipment of bean curd factory effluent minitype direct exhaust type biological treatment |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336498A (en) * | 2011-06-28 | 2012-02-01 | 蔡志武 | Nitrogen-phosphorus wastewater treating method by sequencing batch reactor coupled photobioreactor |
| CN103382049A (en) * | 2012-11-22 | 2013-11-06 | 浙江工商大学 | Sequencing batch activated sludge reactor for sewage treatment and treatment process |
| CN204356198U (en) * | 2014-12-15 | 2015-05-27 | 安徽师范大学 | A kind of equipment of bean curd factory effluent minitype direct exhaust type biological treatment |
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