CN104787823B - Yeast wastewater Zero discharge treatment method - Google Patents
Yeast wastewater Zero discharge treatment method Download PDFInfo
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- CN104787823B CN104787823B CN201510184381.8A CN201510184381A CN104787823B CN 104787823 B CN104787823 B CN 104787823B CN 201510184381 A CN201510184381 A CN 201510184381A CN 104787823 B CN104787823 B CN 104787823B
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
-
- 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
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- 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)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Yeast wastewater Zero discharge treatment method, belongs to yeast wastewater process field. and the present invention will solve the concentrated yeast wastewater of existing multiple-effect falling film evaporimeter and exist operating cost high, the technical problem of dry wall phenomenon. method: yeast wastewater is preheating to 90 DEG C for twice; Two, heating with the circulation that separates of evaporation until in yeast wastewater the concentration of solid content be 30%, three, heating with the circulation that separates of evaporation until in yeast wastewater the concentration of solid content be 50%, output section is back to charging. then adopt method acquisition organic fertilizer and the feed addictives such as conventional centrifugal, spraying is dry. and condensed water biochemical treatment is discharged after reaching waste water standard. and the inventive method is effectively controlled the concentration of each link material, avoid the generation of the dry wall phenomenon of heating tube. the gas phase reuse that the present invention separates evaporation, has reduced production cost.
Description
Technical field
The invention belongs to yeast wastewater process field.
Background technology
Yeast industry is taking water pollution as main, and the yeast wastewater taking blackstrap as primary raw material, owing to containing higher black The materials such as element, phenols and caramel, color is darker, is brownish black; In yeast wastewater, containing approximately 0.5% dry, main component is Yeast protein, cellulose, colloidal substance, and nutritional labeling in the blackstrap not being fully utilized is as residual sugar etc. from ferment The yeast wastewater separating in female liquid fermentation tank, COD30000-70000mg/L, reaches as high as 110000mg/L, and raw with yeast Produce batch and change. this part yeast wastewater is separated processing by some yeast enterprise, and main technique is evaporating and concentrating process, and Concentrate is further prepared to organic fertilizer, for agricultural; Although but the water colourity being evaporated is very shallow, COD value still exists About 2000mg/L, and the inside also contains a certain amount of salinity, often goes out 1t high activity product, high concentration that will output 26t Saliferous yeast wastewater. traditional treatment method is to adopt multiple-effect falling film evaporimeter that yeast wastewater is concentrated, then enters into drying tower spray Powder makees organic fertilizer, but operating cost is high, often has dry wall phenomenon and causes heat exchanging pipe to stop up, and the condensed water of output COD, in 2000mg/L left and right, also needs further to do biochemical treatment and just can meet discharge standard.
Summary of the invention
The present invention will solve the concentrated yeast wastewater of existing multiple-effect falling film evaporimeter and exist operating cost high, the skill of dry wall phenomenon Art problem; And provide yeast wastewater Zero discharge treatment method.
In the present invention, yeast wastewater Zero discharge treatment method completes by following step:
Step 1, yeast wastewater pass into and carry out heat exchange with condensed water in one-level tubular preheater and be preheating to 70 DEG C, so pass into In secondary tubular preheater, carry out heat exchange with raw steam and be preheating to 90 DEG C;
By two-stage preheating, material is warmed up to and requires temperature.
Step 2, then flow into an effect heater be heated to temperature raise 2～4 DEG C, pass into again and in an effect vapor seperator, evaporate the extra quality logistics that obtains comprising gas phase and liquid phase, gas phase passes into vapour compression machine processing and recycles back in heater, liquid phase circulation return an effect heater and the yeast wastewater that passes into continuously mix together heat the circulation that separates with evaporation until in yeast wastewater the concentration of solid content be 30%
Step 3, then pass into and in two effect heaters, be heated to temperature and raise 2～4 DEG C, pass into again and in two effect vapor seperators, evaporate the extra quality logistics that obtains comprising gas phase and liquid phase, gas phase passes into vapour compression machine processing and recycles back in heater, liquid phase circulation return two effect heaters and the yeast wastewater that passes into continuously mix together heat the circulation that separates with evaporation until in yeast wastewater the concentration of solid content be 50%, output section backflow one-level tubular preheater 1.
In the present invention, in step 3, reflux and make the concentration that flows out material reach explained hereafter requirement by 1:4 reflux ratio.
An effect vapor seperator of the present invention and two effect evaporations separate the gas phase producing and pass into vapour compression machine and process and recycle back one and imitate heater and two and imitate before heaters, in an effect heater and two effect heaters, all pass into raw steam as thermal source, reduce raw steam consumption, reduce energy consumption, reduce production costs.
In the present invention, in an effect vapor seperator and two effect vapor seperators, defoaming device is all set, effectively prevent that material mist formation foam from carrying secretly with indirect steam, guarantee that product does not run off, in order to avoid bring extra economic loss or cause secondary pollution, thoroughly solve foam material easy to foaming and caused reducing the phenomenons such as separative efficiency simultaneously.
The present invention discharges the incoagulable gas of an effect heater and two effect heaters generations in time, ensures the stable of heat exchange.
In the inventive method, collect the condensed water in secondary tubular preheater, an effect heater and two effect heaters, be convenient to waste heat recovery, and the temperature that reduces condensed water be to meet biochemical treatment temperature requirement, after then this condensed water of biochemical treatment reaches waste water standard, discharges.
The present invention, by controlling the liquid phase flow rate in an effect and two effect heaters, makes flow velocity reach 2.0m/s, effectively prevents the formation of heater tubulation inner surface fouling, has greatly improved the heat transfer coefficient of heater simultaneously.
The present invention vacuumizes processing to an effect heater and two effect heaters, can increase the temperature difference of heat exchange, is beneficial to steaming Send out; Can reduce in addition evaporating temperature, ensure that the heat-sensitive substance of material the inside is not destroyed.
Raw steam of the present invention refers to primary steam, i.e. original steam.
Method of the present invention greatly reduces the material stock in equipment, is beneficial to plant maintenance, cleaning and minimizing and produces preheating time, reduces energy consumption.
The present invention is used for the operation of production using an effect vapor seperator and two effect vapor seperators, the concentration of can be each with effective control link material, avoids the generation of the dry wall phenomenon of heating tube.
Using the processing method of the present invention, MVR devices being capable of continuous service more than 50 days, even up to 60 days.MVR is continuous stable operation 50 days, in one effect heater, fouling thickness is only 0.024mm left and right, in two effect heaters, fouling thickness is only 0.026mm or so, nodeless mesh can adopt acid solution and alkali liquor rinse-system scale removal, open again work (MVR dresses after rinsing 15 hours again Put.
After the inventive method process, in yeast wastewater, the concentration of solid content is 50%, then adopts conventional centrifugal, spray dried
The method such as dry obtains organic fertilizer and feed additive.
Description of the drawings
Fig. 1 is yeast wastewater evaporation concentration device schematic diagram of the present invention, 1 one-level tubular preheater in figure, 2 two
Level tubular preheater, 3 one effect heaters, 4 one effect vapor seperators, 5 two effect heaters, 6 two effects steam
Send out separator, 7 vapour compression machines.
Specific embodiment
It is described in detail in conjunction with Fig. 1, the middle yeast wastewater Zero discharge treatment method of the present invention is complete by following step
Into：
Step one, yeast wastewater are passed through and carry out heat exchange with condensed water in one-level tubular preheater 1 and be preheating to 70 DEG C, are so passed through
Heat exchange is carried out with raw steam in diode formula preheater 2 and is preheating to 90 DEG C；
Step 2 and then inflow one are imitated heater 3 and are heated to 2 DEG C of temperature rising, then are passed through in an effect vapor seperator 4
Row evaporation obtains the extra quality logistics for including gas phase and liquid phase, and gas phase is passed through the process of vapour compression machine 7 and is recirculated back in heater, liquid
Mutually loop back an effect heater 3 together heated with the yeast wastewater mixing being continuously passed through and detached circulation is evaporated until ferment
In female waste water, the concentration of solid content is 30%,
Step 3, then pass to be heated to temperature in two effect heaters 5 and raise 4 DEG C, then be passed through in two effect vapor seperators 6
The extra quality logistics for obtaining including gas phase and liquid phase is evaporated, gas phase is passed through the process of vapour compression machine 7 and is recirculated back in heater,
Liquid phase circulation return two effect heaters 5 be continuously passed through yeast wastewater mixing together heated and evaporated detached circulation until
In yeast wastewater, the concentration of solid content is 50%, and discharging presses 1:4 reflux ratio partial reflux one-level tubular preheaters 1, remaining use
Drying tower dusts and makees organic fertilizer.
Further limit, an effect vapor seperator 4 and two effect evaporations separate 6 gas phases for producing and are passed through vapour compression machine process
Before being recirculated back to an effect heater 3 and two effect heaters 5, raw steam is passed through in an effect heater 3 and two effect heaters 5 and is made
For thermal source, raw steam consumption is reduced, reducing energy consumption reduces production cost.
Further limit in an effect vapor seperator 4 and two effect vapor seperators 6 and be respectively provided with defoaming device, effectively prevent
Material mist formation foam is carried secretly with indirect steam, it is ensured that product is not lost in, in order to avoid bring additional economic loss or cause secondary pollution,
Thoroughly solving foam material easy to foaming simultaneously causes to reduce the phenomenons such as separation efficiency.
The incoagulable gas for further limiting an effect heater 3 and the two effect generations of heaters 5 are discharged in time, it is ensured that heat exchange
Stable.
The condensed water for collecting that diode formula preheater 2, is imitated in heater 3 and two effect heaters 5 is further limited, is easy to
Waste heat recovery, and reduce the temperature of condensed water to meet biochemical treatment temperature requirement, then the biochemical treatment condensed water reaches waste water
Discharge after standard.
Further limit by the liquid phase flow rate in one effect of control and two effect heaters, make flow velocity reach 2.0m/s, effectively
Prevent the formation of heater tubulation inner surface fouling, while substantially increasing the heat transfer coefficient of heater.
Further limit one and imitate heater 3 and two effect heater 5 evacuation process, the temperature difference of heat exchange can be increased, profit
In evaporation；In addition evaporating temperature can be reduced, it is ensured that the heat-sensitive substance inside material is not destroyed.
Using above-mentioned processing method, MVR devices being capable of continuous service more than 50 days, even up to 60 days.MVR continuous-stables
Operation 50 days, in an effect heater, fouling thickness is only 0.024mm or so, and in two effect heaters, fouling thickness is only 0.026mm
Left and right, nodeless mesh.
After the inventive method process, in yeast wastewater, the concentration of solid content is 50%, then adopts conventional centrifugal, spray dried
The method such as dry obtains organic fertilizer and feed additive.
Claims (7)
1. yeast wastewater Zero discharge treatment method, it is characterised in that yeast wastewater Zero discharge treatment method is complete by following step
Into：
Step one, yeast wastewater are passed through one-level tubular preheater（1）Interior condensed water carries out heat exchange and is preheating to 70 DEG C, then passes to
Diode formula preheater（2）Interior heat exchange is carried out with raw steam and be preheating to 90 DEG C；
Heater is imitated in step 2 and then inflow one（3）It is heated to temperature and raises 2 ~ 4 DEG C, then is passed through an effect vapor seperator（4）In
The extra quality logistics for obtaining including gas phase and liquid phase is evaporated, gas phase is passed through vapour compression machine（7）Process is recirculated back to heater
In, liquid phase circulation returns an effect heater（3）Together heated with the yeast wastewater mixing being continuously passed through and evaporated detached following
Ring is 30% up to the concentration of solid content in yeast wastewater,
Step 3, then pass to two effect heaters（5）In be heated to temperature and raise 2 ~ 4 DEG C, then be passed through two effect vapor seperators
（6）In be evaporated the extra quality logistics for obtaining including gas phase and liquid phase, gas phase is passed through vapour compression machine（7）Process be recirculated back to plus
In hot device, liquid phase circulation returns two effect heaters（5）Together heated with the yeast wastewater mixing being continuously passed through and evaporation is separated
Circulation until yeast wastewater in solid content concentration be 50%, output section flow back one-level tubular preheater（1）；
The one effect heater（3）With two effect heaters（5）Interior liquid phase flow rate is 2.0m/s.
2. yeast wastewater Zero discharge treatment method according to claim 1, it is characterised in that the effect vapor seperator
（4）Separate with two effect evaporations（6）The gas phase of generation is passed through vapour compression machine process and is recirculated back to an effect heater（3）Add with two effects
Hot device（5）Before, heater is imitated one（3）With two effect heaters（5）Raw steam is inside passed through as thermal source.
3. yeast wastewater Zero discharge treatment method according to claim 1, it is characterised in that a described effect evaporation is separated
Device（4）With two effect vapor seperators（6）In be respectively provided with defoaming device.
4. yeast wastewater Zero discharge treatment method according to claim 1, it is characterised in that imitate heater by described（3）
With two effect heaters（5）The incoagulable gas of interior generation is discharged in time.
5. yeast wastewater Zero discharge treatment method according to claim 1, it is characterised in that collect diode formula preheater
（2）, one effect heater（3）With two effect heaters（5）Interior condensed water.
6. yeast wastewater Zero discharge treatment method according to claim 1, it is characterised in that to an effect heater（3）With two
Effect heater（5）Evacuation process.
7. yeast wastewater Zero discharge treatment method according to claim 1, it is characterised in that press 1 in step 3:4 reflux ratios
Backflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184381.8A CN104787823B (en) | 2015-04-17 | 2015-04-17 | Yeast wastewater Zero discharge treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510184381.8A CN104787823B (en) | 2015-04-17 | 2015-04-17 | Yeast wastewater Zero discharge treatment method |
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| Publication Number | Publication Date |
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| CN104787823A CN104787823A (en) | 2015-07-22 |
| CN104787823B true CN104787823B (en) | 2017-03-15 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630338B (en) * | 2015-11-02 | 2020-05-19 | 中国石油化工股份有限公司 | Method and device for treating organic wastewater |
| CN106630335B (en) * | 2015-11-02 | 2020-01-10 | 中国石油化工股份有限公司 | Process method and device for treating organic wastewater |
| CN106630336B (en) * | 2015-11-02 | 2020-03-17 | 中国石油化工股份有限公司 | Method and device for treating wastewater containing organic matters |
| CN105797411A (en) * | 2016-05-27 | 2016-07-27 | 苏州乔发环保科技股份有限公司 | MVR (mechanical vapor recompression) circulating vaporization system and concentrating, vaporizing and crystallizing process of desulfurization wastewater |
| CN109205716A (en) * | 2017-10-16 | 2019-01-15 | 广州中科鑫洲科技有限公司 | Concentrate and application after a kind of fermentation waste water MVPC processing method and processing |
| CN108328870A (en) * | 2018-03-15 | 2018-07-27 | 北京燕山翔宇环保工程技术有限公司 | A kind of catalyst mother liquid disposal recycling system and its treatment process |
| CN111268841B (en) * | 2020-02-25 | 2022-11-22 | 苏州翔铭化工设备有限公司 | Method for desalting yeast drum wastewater |
| CN111268840B (en) * | 2020-02-25 | 2023-01-31 | 苏州翔铭化工设备有限公司 | Method for recycling and treating salt in waste water of yeast drum |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100781179B1 (en) * | 2006-05-22 | 2007-11-30 | 정석희 | Apparatus for concentrating |
| CN101444675B (en) * | 2008-12-08 | 2010-12-08 | 西安交通大学 | Alcohol fermentation waste liquid heat pump concentration process and device therefor |
| CN101734827B (en) * | 2009-12-29 | 2011-07-27 | 广西博世科环保科技股份有限公司 | Method for treating yeast wastewater |
| CN101767839B (en) * | 2010-01-28 | 2011-12-21 | 东莞市东糖集团有限公司 | Yeast waste liquor circulation treatment method |
| CN103183437A (en) * | 2011-12-27 | 2013-07-03 | 安琪酵母股份有限公司 | Yeast waste water reutilization method and method for producing yeast by using yeast waste water reutilization method |
| CN102616973B (en) * | 2012-04-17 | 2013-12-04 | 常州光辉生物科技有限公司 | Method and device for processing high-saline organic wastewater |
| CN103373747B (en) * | 2012-04-23 | 2015-11-25 | 安琪酵母股份有限公司 | The evaporating concentrating method of yeast wastewater |
| CN203653281U (en) * | 2013-12-25 | 2014-06-18 | 无锡市中岳石化设备有限公司 | Salt-containing sewage treatment device |
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Effective date of registration: 20191128 Address after: Room 602, building H2, Changyuan road international enterprise community, Wuqing Development Zone, Wuqing District, Tianjin Patentee after: Tianjin Lei Sheng Technology Co., Ltd. Address before: 150078, No. 12 East Lake Road, Jianguo village, Xinfa Town, Daoli District, Heilongjiang, Harbin Patentee before: Heilongjiang Xindasheng Machinery Technology Co., Ltd. |
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Effective date of registration: 20191223 Address after: 311701 Building 1, Ping Shan Road, Thousand Island town, Chunan County, Hangzhou, Zhejiang, 1 Patentee after: Zhejiang thousand grass biological Polytron Technologies Inc Address before: Room 602, building H2, Changyuan road international enterprise community, Wuqing Development Zone, Wuqing District, Tianjin Patentee before: Tianjin Lei Sheng Technology Co., Ltd. |
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