CN101792242A - Treatment process of waste water of dairy products - Google Patents
Treatment process of waste water of dairy products Download PDFInfo
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- CN101792242A CN101792242A CN201010143985A CN201010143985A CN101792242A CN 101792242 A CN101792242 A CN 101792242A CN 201010143985 A CN201010143985 A CN 201010143985A CN 201010143985 A CN201010143985 A CN 201010143985A CN 101792242 A CN101792242 A CN 101792242A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to the technical field of waste water treatment, in particular to a treatment process of waste water of dairy products, which comprises the following steps: firstly, removing floating materials in the waste water of the dairy products through a grid channel, and then carrying out primary treatment on the waste water through a regulating pond; degrading the waste water after primary treatment through an anaerobic baffled reactor (ABR), discharging the sludge obtained by degrading the waste water through the ABR into a sludge tank, and then pumping and transporting the sludge outward; discharging the waste water after ABR degradation into a middle sedimentation tank for solid-liquid separation, and discharging the waste water after separation in the middle sedimentation tank into an aerobic tank; then, aerating and degrading the waste water in the aerobic tank, and discharging the waste water after aeration treatment into a secondary sedimentation tank; and finally, carrying out solid-liquid separation on the waste water in the secondary sedimentation tank, and discharging the separated waste water after reaching standards. Thus, the treatment process of thewaste water of the dairy products, which is provided by the invention, has small discharge amount of the sludge and high treatment efficiency of the waste water.
Description
Technical field
The present invention relates to technical field of waste water processing, be specifically related to a kind of treatment process of waste water of dairy products.
Background technology
At home and abroad milk-product such as sour milk, fresh milk, pure milk, milk powder have all entered huge numbers of families at present, become the indispensable nutritious prod of numerous people, but in the diary processing process, have a certain amount of discharge of wastewater, mainly from wash bottle water, brush pour water, wash-down water etc., contain in a large number very easily degradation material in these waste water, be easy to cause environmental pollution after the discharging.
Be at first to adopt physico-chemical process such as air supporting, coagulating sedimentation, absorption etc. that waste water is carried out pre-treatment in the prior art, so that the milk solids in the waste water such as dairy fats, casein and other milk-protein lactose, inorganic salts are separated from waste water, and then adopt up flow anaerobic sludge blanket reactor (UASB reactor) aerobic process that combines with aerobic biochemical that waste water is further processed, because the pre-treatment step that above-mentioned waste water treatment process adopts makes the suspended solid (SS) in the waste water separated, sludge discharge is big; Lipid in the while waste water is degraded very slow in anaerobic treatment, needs the long residence time, and the easy come-up in the UASB reactor of the lipid in the waste water is stopped up air chamber and is difficult to and stops the long period simultaneously, and system moves difficulty, so low to the processing efficiency of waste water.
Summary of the invention
The purpose of this invention is to provide a kind of treatment process of waste water of dairy products, the sludge discharge of this waste water treatment process is little, to the processing efficiency height of waste water.
A kind of treatment process of waste water of dairy products of the present invention may further comprise the steps:
A, with milk product waste after the grid canal is removed floating matter, carry out preliminary treatment through equalizing tank again;
B, the waste water after the preliminary treatment is degraded through the ABR reactor, the mud that obtains after the degraded of ABR reactor is arranged into sludge sump again, then mud suction outward transport is handled;
C, the waste water after the ABR reactor degraded is entered medium sediment pool carry out solid, liquid and separate, the waste water after separating in the medium sediment pool enters Aerobic Pond;
D, the waste water in the Aerobic Pond is carried out aeration degraded, the waste water after aeration is handled enters second pond;
E, waste water carry out solid, liquid in second pond separates, with the discharged wastewater met the national standard after separating.
A kind of treatment process of waste water of dairy products of the present invention, at first milk product waste is passed through the grid canal to remove the floating matter in the waste water, carry out the preliminary treatment of even water quality and quantity again through equalizing tank, then waste water is degraded through the ABR reactor, waste water after the degraded is again through the further processing of medium sediment pool, Aerobic Pond, second pond, so that remove suspended solid (SS), chemical oxygen demand (COD) (COD in the waste water
Cr), biochemical oxygen demand (BOD) (BOD
5), ammonia nitrogen (NH
3-N), thereby make discharged wastewater met the national standard, waste water treatment process of the present invention adopts the ABR reactor that waste water is handled, can hold back a large amount of suspended solid (SS), make it digest degraded at the ABR inside reactor, and then the quantity discharged of minimizing mud, there are some vertical flow deflectors that the ABR reactor is separated into placed in-line several reaction in the ABR reactor that is adopted simultaneously, each reaction chamber can be regarded a relatively independent flow lifting type Sludge Bed system as, waste water enter behind the ABR reactor along flow deflector up and down baffling advance, pass through the Sludge Bed of each reaction chamber successively, organic substrate in the waste water fully contacts by each reaction chamber and with wherein microorganism and obtains removing, the efficient of anaerobic digestion is improved greatly, so the sludge discharge of a kind of treatment process of waste water of dairy products of the present invention is little, the processing efficiency height of waste water.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
As shown in Figure 1, a kind of treatment process of waste water of dairy products of the present invention may further comprise the steps:
A, with milk product waste after the grid canal is removed floating matter, carry out preliminary treatment through equalizing tank again;
B, the waste water after the preliminary treatment is degraded through the ABR reactor, the mud that obtains after the degraded of ABR reactor is arranged into sludge sump again, then mud suction outward transport is handled;
C, the waste water after the ABR reactor degraded is entered medium sediment pool carry out solid, liquid and separate, the waste water after separating in the medium sediment pool enters Aerobic Pond;
D, the waste water in the Aerobic Pond is carried out aeration degraded, the waste water after aeration is handled enters second pond;
E, waste water carry out solid, liquid in second pond separates, with the discharged wastewater met the national standard after separating.
Adopt technique scheme, at first be that milk product waste is carried out pre-treatment through grid canal, equalizing tank, to remove macrobead suspended substance, even water quality and quantity, carry out anaerobic digestion through the ABR reactor again, waste water after the anaerobic digestion of ABR reactor enters medium sediment pool and carries out the solid, liquid separation, to remove the chemical oxygen demand (COD) (COD in the waste water
Cr), biochemical oxygen demand (BOD) (BOD
5), ammonia nitrogen (NH
3-N), the waste water after solid, liquid separates in the medium sediment pool enters Aerobic Pond, carries out the aerobic aeration degraded, further to remove the chemical oxygen demand (COD) (COD in the waste water
Cr), biochemical oxygen demand (BOD) (BOD
5), the waste water after aeration is handled in the Aerobic Pond enters second pond to carry out further solid, liquid and separates, and further removing the suspended solid (SS) in the waste water, thereby makes discharged wastewater met the national standard.
As shown in Figure 1, as a kind of optimal way of the present invention, among the described step c, the mud backflow that solid, liquid separation postprecipitation gets off in the medium sediment pool enters the ABR reactor and degrades.
The employing technique scheme, the anaerobic sludge that solid, liquid separation postprecipitation gets off in the medium sediment pool refluxes and enters the ABR reactor, to guarantee the sludge concentration in the ABR reactor, so that mud carries out anaerobic digestion at the ABR inside reactor, thus the quantity discharged of minimizing mud.
As shown in Figure 1, as another kind of optimal way of the present invention, among the described step e, the mud backflow that solid, liquid separation postprecipitation gets off in the second pond enters the ABR reactor and degrades.
Adopt this technique scheme, the mud that solid, liquid separation postprecipitation gets off in the second pond refluxes and enters the ABR reactor, so that the mud of ABR inside reactor carries out anaerobic digestion under anaerobic environment, thereby reaches the purpose that reduces sludge discharge.
A kind of treatment process of waste water of dairy products of the present invention, the English full name of the ABR reactor that is adopted is Anaerobic Baffled Reactor, be called anaerobic baffled reactor again, this reactor is by the barrier effect of its internal baffle, a large amount of milk solids such as dairy fats when handling waste water, casein and other milk-protein lactose, inorganic salts is trapped at the ABR inside reactor, thereby degraded by anaerobic digestion, this has also just reduced the quantity discharged of mud, the mud that whole waste water treatment process produced is the excess sludge of ABR inside reactor, quantity discharged is very little, this has also just reduced a large amount of investments and sludge treatment expense, simultaneously the water inlet pattern of ABR reactor is to go out under enterprising, overcome the UASB reactor owing to a series of accidents that the mud come-up causes, guaranteed the normal operation of total system.
Below in conjunction with embodiment and Figure of description a kind of treatment process of waste water of dairy products of the present invention is described further.
Embodiment 1
In the milk product waste, suspended solid (SS), chemical oxygen demand (COD) (COD
Cr), biochemical oxygen demand (BOD) (BOD
5), ammonia nitrogen (NH
3-N) mass concentration is respectively 300～1000mg/L, 800～3000mg/L, 350～1500mg/L, 25～70mg/L;
A, at first with milk product waste through the grid canal to remove the floating matter in the waste water, carry out the preliminary treatment of homogeneous water quality and quantity again through equalizing tank;
B, again the waste water after the preliminary treatment is degraded with pump suction ABR reactor, remove SS in the waste water, COD, BOD, NH by the ABR reactor
3-N, a small amount of mud that the ABR reactor is discharged is arranged into sludge sump, then mud suction outward transport is handled;
C, will enter medium sediment pool through the waste water after the ABR reactor degraded and carry out solid, liquid and separate, to remove COD in the waste water, BOD, NH
3-N, the anaerobic sludge that solid, liquid separation postprecipitation gets off in the medium sediment pool refluxes and enters the ABR reactor, to guarantee the sludge concentration in the ABR reactor, so that mud carries out anaerobic digestion at the ABR inside reactor, the waste water after solid, liquid separates in the medium sediment pool further enters Aerobic Pond;
D, the waste water in the Aerobic Pond is carried out aerobic aeration degraded, further to remove COD in the waste water, BOD, the waste water after aeration handled enters second pond;
E, waste water carry out solid, liquid in second pond separates, and further to remove SS, the aerobic residual sludge reflux that solid, liquid separation postprecipitation gets off in the second pond enters the ABR reactor and carries out anaerobic digestion, the discharged wastewater met the national standard after solid, liquid separates in the second pond simultaneously.
By above-mentioned treatment process, SS, the COD of the wastewater effluent after monitoring is handled
Cr, BOD
5, NH
3The average quality concentration of-N is respectively 53,59,15,8mg/L, has reached the primary standard of integrated wastewater discharge standard (GB8978-1996).
Embodiment 2
In the milk product waste, suspended solid (SS), chemical oxygen demand (COD) (COD
Cr), biochemical oxygen demand (BOD) (BOD
5), ammonia nitrogen (NH
3-N) mass concentration is respectively 600mg/L, 2500mg/L, 1500mg/L, 25mg/L;
A, at first with milk product waste through the grid canal to remove the floating matter in the waste water, carry out the preliminary treatment of homogeneous water quality and quantity again through equalizing tank;
B, again the waste water after the preliminary treatment is degraded with pump suction ABR reactor, remove SS in the waste water, COD, BOD, NH by the ABR reactor
3-N, a small amount of mud that the ABR reactor is discharged is arranged into sludge sump, then mud suction outward transport is handled;
C, will enter medium sediment pool through the waste water after the ABR reactor degraded and carry out solid, liquid and separate, to remove COD in the waste water, BOD, NH
3-N, the anaerobic sludge that solid, liquid separation postprecipitation gets off in the medium sediment pool refluxes and enters the ABR reactor, to guarantee the sludge concentration in the ABR reactor, so that mud carries out anaerobic digestion at the ABR inside reactor, the waste water after solid, liquid separates in the medium sediment pool further enters Aerobic Pond;
D, the waste water in the Aerobic Pond is carried out aerobic aeration degraded, further to remove COD in the waste water, BOD, the waste water after aeration handled enters second pond;
E, waste water carry out solid, liquid in second pond separates, and further to remove SS, the aerobic residual sludge reflux that solid, liquid separation postprecipitation gets off in the second pond enters the ABR reactor and carries out anaerobic digestion, the discharged wastewater met the national standard after solid, liquid separates in the second pond simultaneously.
By above-mentioned treatment process, SS, the COD of the wastewater effluent after monitoring is handled
Cr, BOD
5, NH
3The average quality concentration of-N is respectively 48,68,18,9.3mg/L, has reached the primary standard of integrated wastewater discharge standard (GB8978-1996).
Claims (3)
1. treatment process of waste water of dairy products may further comprise the steps:
A, with milk product waste after the grid canal is removed floating matter, carry out preliminary treatment through equalizing tank again;
B, the waste water after the preliminary treatment is degraded through the ABR reactor, the mud that obtains after the degraded of ABR reactor is arranged into sludge sump again, then mud suction outward transport is handled;
C, the waste water after the ABR reactor degraded is entered medium sediment pool carry out solid, liquid and separate, the waste water after separating in the medium sediment pool enters Aerobic Pond;
D, the waste water in the Aerobic Pond is carried out aeration degraded, the waste water after aeration is handled enters second pond;
E, waste water carry out solid, liquid in second pond separates, with the discharged wastewater met the national standard after separating.
2. treatment process of waste water of dairy products according to claim 1 is characterized in that: among the described step c, the mud backflow that solid, liquid separation postprecipitation gets off in the medium sediment pool enters the ABR reactor and degrades.
3. treatment process of waste water of dairy products according to claim 1 is characterized in that: among the described step e, the mud backflow that solid, liquid separation postprecipitation gets off in the second pond enters the ABR reactor and degrades.
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| CN201010143985A CN101792242A (en) | 2010-04-09 | 2010-04-09 | Treatment process of waste water of dairy products |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381815A (en) * | 2011-09-30 | 2012-03-21 | 江苏春晖乳业有限公司 | Treatment method of milk production wastewater |
| CN102503051A (en) * | 2011-12-30 | 2012-06-20 | 内蒙古伊利实业集团股份有限公司 | Method for treating wastewater from dairy processing |
| CN102659242A (en) * | 2012-05-31 | 2012-09-12 | 上海环保（集团）有限公司 | Nutrient self compensation and excess sludge reduction sewage treatment method and system thereof |
| CN102701526A (en) * | 2012-05-31 | 2012-10-03 | 上海环保（集团）有限公司 | Treatment process and system of nutrient self compensation and difficult-to-degrade industrial wastewater |
| CN102849860A (en) * | 2011-07-02 | 2013-01-02 | 甘南州科瑞乳品开发有限公司 | Cyclic utilization method of wastewater from casein phosphoeptide production |
| CN103113002A (en) * | 2013-03-04 | 2013-05-22 | 广东新大禹环境工程有限公司 | Method for processing organic sewage |
| CN103159384A (en) * | 2013-04-15 | 2013-06-19 | 安徽绿创环境工程有限公司 | Method for processing food industry wastewater with small sludge emission |
| CN105016560A (en) * | 2014-04-18 | 2015-11-04 | 龙岩市绿河环保科技有限公司 | Sewage treatment system |
| CN106219873A (en) * | 2016-08-23 | 2016-12-14 | 沈阳东源环境科技有限公司 | A kind of milk processing factory method of wastewater treatment |
| CN110217884A (en) * | 2019-07-17 | 2019-09-10 | 云南民族大学 | A kind of method of dairy industry production wastewater treatment |
| CN115159782A (en) * | 2022-07-22 | 2022-10-11 | 海南水伊方环境科技有限公司 | Method for treating coconut milk processing wastewater |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849860A (en) * | 2011-07-02 | 2013-01-02 | 甘南州科瑞乳品开发有限公司 | Cyclic utilization method of wastewater from casein phosphoeptide production |
| CN102849860B (en) * | 2011-07-02 | 2013-09-04 | 甘南州科瑞乳品开发有限公司 | Cyclic utilization method of wastewater from casein phosphoeptide production |
| CN102381815A (en) * | 2011-09-30 | 2012-03-21 | 江苏春晖乳业有限公司 | Treatment method of milk production wastewater |
| CN102503051A (en) * | 2011-12-30 | 2012-06-20 | 内蒙古伊利实业集团股份有限公司 | Method for treating wastewater from dairy processing |
| CN102701526B (en) * | 2012-05-31 | 2014-05-21 | 上海环保（集团）有限公司 | Treatment process and system of nutrient self compensation and difficult-to-degrade industrial wastewater |
| CN102701526A (en) * | 2012-05-31 | 2012-10-03 | 上海环保（集团）有限公司 | Treatment process and system of nutrient self compensation and difficult-to-degrade industrial wastewater |
| CN102659242A (en) * | 2012-05-31 | 2012-09-12 | 上海环保（集团）有限公司 | Nutrient self compensation and excess sludge reduction sewage treatment method and system thereof |
| CN102659242B (en) * | 2012-05-31 | 2014-07-23 | 上海环保（集团）有限公司 | Nutrient self compensation and excess sludge reduction sewage treatment method and system thereof |
| CN103113002A (en) * | 2013-03-04 | 2013-05-22 | 广东新大禹环境工程有限公司 | Method for processing organic sewage |
| CN103113002B (en) * | 2013-03-04 | 2014-11-19 | 广东新大禹环境工程有限公司 | Method for processing organic sewage |
| CN103159384A (en) * | 2013-04-15 | 2013-06-19 | 安徽绿创环境工程有限公司 | Method for processing food industry wastewater with small sludge emission |
| CN105016560A (en) * | 2014-04-18 | 2015-11-04 | 龙岩市绿河环保科技有限公司 | Sewage treatment system |
| CN106219873A (en) * | 2016-08-23 | 2016-12-14 | 沈阳东源环境科技有限公司 | A kind of milk processing factory method of wastewater treatment |
| CN106219873B (en) * | 2016-08-23 | 2019-10-11 | 沈阳东源环境科技有限公司 | A kind of milk processing factory's wastewater treatment method |
| CN110217884A (en) * | 2019-07-17 | 2019-09-10 | 云南民族大学 | A kind of method of dairy industry production wastewater treatment |
| CN115159782A (en) * | 2022-07-22 | 2022-10-11 | 海南水伊方环境科技有限公司 | Method for treating coconut milk processing wastewater |
| CN115159782B (en) * | 2022-07-22 | 2023-12-01 | 海南水伊方环境科技有限公司 | Method for treating coconut milk processing wastewater |
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Open date: 20100804 |