CN101767839A - Yeast waste liquor circulation treatment method - Google Patents
Yeast waste liquor circulation treatment method Download PDFInfo
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- CN101767839A CN101767839A CN201010103925A CN201010103925A CN101767839A CN 101767839 A CN101767839 A CN 101767839A CN 201010103925 A CN201010103925 A CN 201010103925A CN 201010103925 A CN201010103925 A CN 201010103925A CN 101767839 A CN101767839 A CN 101767839A
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Abstract
The invention relates to a yeast waste liquor circulation treatment method, comprising the following steps: 1) preheating yeast waste liquor in a preheating device; and 2) evaporating the preheated yeast waste liquor in an evaporator to obtain vapour, vapour condensate and concentrated solution of the yeast waste liquor, then introducing part of the vapour into the preheating device as a heat source of the preheating device, introducing part of the vapour to a condensation ejector for condensation and collection, introducing the vapour condensate into a vapour condensate storage tank, part or all concentrated solution of the yeast waste liquor to a boiler furnace, and the steam produced by the boiler is used as a heat source of the evaporator. The yeast waste liquor circulation treatment method meets the requirement of the environment-protection emission standard and has the characteristics of low power consumption, low steam consumption, low cost and widespread adaptability.
Description
Technical field
The present invention relates to wastewater treating technology, particularly relate to a kind of yeast waste liquor circulation treatment method.
Background technology
Yeast is to be that raw material carries out aerobic fermentation with the waste molasses, after the fermentation ends, fermented liquid is carried out multistage centrifugal separate, and underflow is a yeast-lactic, and overflow is a yeast waste liquor.The characteristics of yeast waste liquor are brown during waste water is, and belong to high concentrated organic wastewater, pH value 5.8～6.5, the about 40000mg/L of COD, the about 20000mg/L of BOD.
Yeast waste liquor is generally handled by traditional aerobic/anaerobic biochemical method.Yet, there is following deficiency by the biochemical treatment yeast waste liquor (or claiming yeast waste liquor bio-chemical effluent) that obtains after the biochemical processing process processing: first, yeast waste liquor is through after traditional biochemical treatment, because pigment (melanoid) is difficult to be degraded by microorganisms in the waste water, the water outlet color is very dark; The 2nd COD concentration is higher.Therefore, need carry out advanced treatment to the biochemical treatment yeast waste liquor.
The biochemical treatment yeast waste liquor that the yeast waste liquor biochemical treatment that both at home and abroad the yeast production process is produced at present obtains is carried out advanced treatment process and is comprised methods such as physics, chemistry and microorganism.The physics method mostly is the process combination of ultrafiltration (UF) or ultrafiltration and nanofiltration (NF) based on membrane technology.Chemical method mainly is a chemical oxidization method, comprises ozone oxidation method, Fenton reagent (hydrogen peroxide mixes with certain proportion with ferrous sulfate) oxidation, supercritical oxidation, electrochemical oxidation process etc.Part special bacteria, especially fungi have complicated enzyme system as white-rot fungi, under the condition that nutrition is restricted, and the melanoid of can degrading.
Respectively more than 80% and 90%, but investment cost and running cost are higher to waste water COD and chroma removal rate for membrane treatment process, and are easy to generate concentration polarization and membrane pollution problem.Chemical oxidization method has only 20-50% to the COD clearance mostly, also may produce other deleterious intermediate product in the reaction process.Supercritical oxidation process is organism in the degrading waste water fully almost, but investment is too high with working cost.Generally between 60-80%, effect is on the low side, and is subjected to the influence of environmental factors (as temperature, pH value and nutrition etc.) bigger, the decolorizing effect instability to the percent of decolourization of yeast waste liquor for microorganism.
Because melanoid has oxidation resistant characteristics in the yeast waste liquor, intractability is very big.At present, enterprise can't be really up to standard to the processing of yeast waste liquor, the improvement of yeast waste liquor lagged behind the development of industry far away.The handling problem of yeast waste liquor has had influence on enterprise, even is restricting the sustainable development of whole industry.
Therefore, demand providing a kind of urgently and can remove COD and pigment and yeast waste liquor improvement method with low cost.
Summary of the invention
The objective of the invention is to avoid the deficiencies in the prior art part and a kind of yeast waste liquor circulation treatment method is provided, this yeast waste liquor circulation treatment method can effectively be removed COD and pigment, and with low cost.
Purpose of the present invention realizes by following technical measures:
A kind of yeast waste liquor circulation treatment method comprises the following steps:
(1) preheating, yeast waste liquor enter preliminary heating device and carry out preheating;
(2) evaporation and collection, the yeast waste liquor after the preheating enters vaporizer and evaporates, and yeast waste liquor forms juice vapour after evaporating, vapour coagulates water and yeast waste liquor concentrated solution,
The described juice vapour of part is imported the thermal source of described preliminary heating device as preliminary heating device, and the described juice vapour input of part condensation injector carries out condensation to be collected,
Described vapour coagulates water input vapour and coagulates the collection of water basin,
Some or all of described yeast waste liquor concentrated solution inputs to boiler furnace, and the steam that described boiler produces is as the thermal source of described vaporizer.
Concrete, above-mentioned steps (1) preheating, wherein, described preliminary heating device comprises one-level preliminary heating device and secondary preliminary heating device,
Described step (1) preheating specifically comprises:
(11) one-level preheating, yeast waste liquor enter the one-level preliminary heating device and carry out the one-level preheating, import the secondary preliminary heating device then,
(12) secondary preheating, the yeast waste liquor after the one-level preheating enter the secondary preliminary heating device and carry out the secondary preheating, import vaporizer then.
More specifically, above-mentioned steps (2) evaporation is also collected, and wherein, described vaporizer comprises I single-effect evaporator, II single-effect evaporator, III single-effect evaporator and IV single-effect evaporator, and described vapour coagulates the water basin and comprises that first vapour coagulates the water basin and second vapour coagulates the water basin,
Described step (2) evaporation is also collected, and specifically comprises:
(21) I is imitated evaporation and is collected, the I single-effect evaporator of the yeast waste liquor input vaporizer after the preheating carries out I imitates evaporation, formation I effect juice steam, I are imitated vapour and are coagulated water and I effect yeast waste liquor, described I effect juice steam is imported the thermal source of described secondary preliminary heating device as described step (12), described I is imitated vapour and is coagulated water and import first vapour and coagulate the water basin, described I is imitated yeast waste liquor and is inputed to the II single-effect evaporator
(22) II is imitated evaporation and is collected, the II single-effect evaporator is imitated yeast waste liquor to the I of input and is carried out the evaporation of II effect, formation II effect juice steam, II are imitated vapour and are coagulated water and II effect yeast waste liquor, the described II effect juice steam of part is imported the thermal source of described one-level preliminary heating device as described step (11), the described II effect juice steam input of part III single-effect evaporator is as the thermal source of step (23), described II is imitated yeast waste liquor and is inputed to the III single-effect evaporator
(23) III is imitated evaporation and is collected, the III single-effect evaporator is imitated yeast waste liquor to the II of input and is carried out the evaporation of III effect, formation III effect juice steam, III are imitated vapour and are coagulated water and III effect yeast waste liquor, described III effect juice steam input IV single-effect evaporator is as the thermal source of step (24), described III is imitated yeast waste liquor and is inputed to the IV single-effect evaporator
(24) IV is imitated evaporation and is collected, the IV single-effect evaporator is imitated yeast waste liquor to the III of input and is carried out the evaporation of IV effect, formation IV effect juice steam, IV are imitated vapour and are coagulated water and IV effect yeast waste liquor, described IV effect juice steam is imported described condensation injector and is carried out the condensation collection, described IV is imitated vapour and is coagulated water and imitate vapour with described II and coagulate water, described III and imitate vapour and coagulate water and input to second vapour together and coagulate the water basin and collect, some or all of described IV yeast waste liquor inputs to boiler furnace, and the steam that described boiler produces is as the thermal source of described I single-effect evaporator.
Further, above-mentioned first vapour I that coagulates water collection in the jar is imitated vapour and is coagulated water section or all import described boiler.
Further, above-mentioned steps (23) III imitate evaporation and collect in the III single-effect evaporator II of input is imitated yeast waste liquor carry out III and imitate and be evaporated to vacuum-evaporation.
Further, above-mentioned steps (24) IV imitate evaporation and collect in the IV single-effect evaporator III of input is imitated yeast waste liquor carry out IV and imitate and be evaporated to vacuum-evaporation.
Preferably, above-mentioned steps (21) I imitate evaporation and collect in the vaporization temperature scope that adopts be that 110 ℃～125 ℃, pressure are 1.5～2.4kg/cm
2
Preferred, above-mentioned steps (21) I imitate evaporation and collect in the vaporization temperature that adopts be that 115 ℃, pressure are 2.0kg/cm
2
A kind of yeast waste liquor circulation treatment method of the present invention comprises the following steps: (1) preheating, and yeast waste liquor enters preliminary heating device and carries out preheating; (2) evaporation and collection, yeast waste liquor after the preheating enters vaporizer and evaporates, yeast waste liquor forms juice vapour after evaporating, vapour coagulates water and yeast waste liquor concentrated solution, the described juice vapour of part is imported the thermal source of described preliminary heating device as preliminary heating device, the described juice vapour input of part condensation injector carries out condensation and collects, described vapour coagulates water input vapour and coagulates the collection of water basin, some or all of described yeast waste liquor concentrated solution inputs to boiler furnace, and the steam that described boiler produces is as the thermal source of described vaporizer.Yeast waste liquor circulation treatment method provided by the invention can reach the environmental emission standard requirement, has low power consumption, the low steam consumption and characteristics cheaply, has general adaptability.
Description of drawings
Utilize accompanying drawing that the present invention is further described, but the content in the accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is the synoptic diagram of a kind of yeast waste liquor circulation treatment method of the present invention embodiment 1;
Fig. 2 is the synoptic diagram of a kind of yeast waste liquor circulation treatment method of the present invention embodiment 2.
In Fig. 1, Fig. 2, comprising:
Vaporizer 200, I single-effect evaporator 210, II single-effect evaporator 220, III single-effect evaporator 230,
IV single-effect evaporator 240, condensation injector 300, boiler 400, separator 500,
Vapour coagulates that water basin 600, first vapour coagulate water basin 610, second vapour coagulates water basin 620.
Embodiment
The invention will be further described with the following Examples.
Embodiment 1
A kind of yeast waste liquor circulation treatment method as shown in Figure 1, comprises step:
(1) preheating, yeast waste liquor enter preliminary heating device 100 and carry out preheating,
(2) evaporation and collection, the yeast waste liquor after the preheating enters vaporizer 200 and evaporates, and yeast waste liquor forms juice vapour after evaporating, vapour coagulates water and yeast waste liquor concentrated solution,
Part juice vapour input preliminary heating device 100 is as the thermal source of preliminary heating device 100, and part juice vapour input condensation injector 300 carries out condensation to be collected,
Vapour coagulates water input vapour and coagulates 600 collections of water basin,
Some or all of yeast waste liquor concentrated solution inputs to boiler 400 combustion chambers, and the steam that boiler 400 produces separates through separator 500, as the thermal source of described vaporizer 200.
A kind of yeast waste liquor circulation treatment method of the present invention, the high pressure steam that the thermal source of vaporizer 200 can adopt boiler 400 burnings to produce, the high pressure steam that boiler 400 produces is collected, by through pipeline collected delivery of steam being separated to steam separator 500, the steam after separating is as the thermal source of vaporizer 200.Yeast waste liquor forms the thermal source of juice vapour part as preliminary heating device 100 after evaporating, part is imported condensation injector 300 and carried out the condensation collection.Can realize fully effectively utilizing to the various resources and the energy.Treated, the 5 ° Bxs of yeast waste liquor concentration before the preheating are concentrated into 65 ° of Bx.Concentrated solution after concentrating can be done the fuel combustion of boiler 400, forms thermoelectric recycle, also can be used as adding of compoiste fertilizer and fills material, and the fertilizer after fermentation, oven dry, granulation returns and feeds the sugarcane grower, forms the recycling economy industrial chain.
Yeast waste liquor circulation treatment method provided by the invention can reach the environmental emission standard requirement, has low power consumption, the low steam consumption and characteristics cheaply, has general adaptability.
Embodiment 2
A kind of yeast waste liquor circulation treatment method, as shown in Figure 2, comprise evaporation of step (1) preheating and step (2) and collection, wherein, step (1) preheating specifically comprises step (11) one-level preheating and step (12) secondary preheating, and step (2) is evaporated and collected and specifically comprises step (21) I effect evaporation and collection, step (22) II effect evaporation and collection, step (23) III effect evaporation and collection and evaporation of step (24) IV effect and collection.
Step (1) preheating is yeast waste liquor to be imported preliminary heating device 100 carry out preheating, and preliminary heating device 100 comprises one-level preliminary heating device 110 and secondary preliminary heating device 120.
Step (1) preheating, its detailed process comprises:
(11) one-level preheating, yeast waste liquor at first enter one-level preliminary heating device 110 and carry out the one-level preheating, import secondary preliminary heating device 120 then.The concentration of the yeast waste liquor before the preheating is not more than 5 ° of BX.
(12) secondary preheating, the yeast waste liquor after the one-level preheating enter secondary preliminary heating device 120 and carry out the secondary preheating, and the yeast waste liquor input vaporizer 200 after the secondary preheating evaporates.Its temperature of yeast waste liquor after the secondary preheating reaches the temperature that step (21) I is imitated evaporation and collected.
Step (2) evaporation and collection are meant that the yeast waste liquor after the preheating enters vaporizer 200 and evaporates, yeast waste liquor forms juice vapour after evaporating, vapour coagulates water and yeast waste liquor concentrated solution, part juice vapour input preliminary heating device 100 is as the thermal source of preliminary heating device 100, part juice vapour input condensation injector carries out condensation and collects, vapour coagulates water input vapour and coagulates 600 collections of water basin, some or all of yeast waste liquor concentrated solution inputs to boiler 400 combustion chambers, the steam that boiler 400 produces separates through separator 500, as the thermal source of described vaporizer 200.
Vaporizer 200 comprises I single-effect evaporator 210, II single-effect evaporator 220, III single-effect evaporator 230 and IV single-effect evaporator 240.
Step (2) evaporation is also collected, and its detailed process comprises:
(21) I is imitated and is evaporated and collection, and the I single-effect evaporator 210 that the yeast waste liquor after the preheating is imported vaporizer 200 carries out the evaporation of I effect, and formation I effect juice steam, I effect vapour coagulate water and I effect yeast waste liquor.This technology is that 110 ℃～125 ℃, pressure are 1.5～2.4kg/cm in temperature range
2Processing condition under carry out, preferably adopting vaporization temperature is that 115 ℃, pressure are 2.0kg/cm
2Processing condition.Adopt the operation of low-temp low-pressure evaporation technology to reduce fouling.Because yeast waste liquor derives from honey, its characteristic is that many, the deliquescent calcium of colloid, magnesium, silicon ion are higher, belongs to a kind of liquid of very easily incrustation.According to many-sided practice summary, solvability calcium in the yeast waste liquor, magnesium, silicon ion separate out the critical line (more than 2.5-2.7kg/cm2,125-130 ℃) that a pressure, temperature are arranged, surpass this critical line and just very easily separate out, and speed of separating out is fast, incrustation hardness height, intractable.This step (21) I imitates evaporation and collection process is controlled at operation under the critical line, and incrustation is slower, and dirt is looser, cleaning easily.
Part I effect juice steam input secondary preliminary heating device 120 thermals source as the secondary preheating, part I effect juice steam input II single-effect evaporator 220 thermals source as II single-effect evaporator 220, I is imitated vapour and is coagulated water and import first vapour and coagulate water basin 610, and I is imitated yeast waste liquor and inputed to II single-effect evaporator 220.
(22) II is imitated evaporation and is collected,
The I of 220 pairs of inputs of II single-effect evaporator is imitated yeast waste liquor and is carried out the evaporation of II effect, formation II effect juice steam, II are imitated vapour and are coagulated water and II effect yeast waste liquor, part II effect juice steam input one-level preliminary heating device 110 thermals source as the one-level preheating, part II effect juice steam input III single-effect evaporator 230 thermals source as III single-effect evaporator 230, II is imitated yeast waste liquor and is inputed to III single-effect evaporator 230.
(23) III is imitated evaporation and is collected
The II of 230 pairs of inputs of III single-effect evaporator is imitated yeast waste liquor and is carried out the evaporation of III effect, this III is imitated and is evaporated to vacuum-evaporation, formation III effect juice steam, III are imitated vapour and are coagulated water and III effect yeast waste liquor, III effect juice steam input IV single-effect evaporator 240 thermals source as IV single-effect evaporator 240, III is imitated yeast waste liquor and is inputed to IV single-effect evaporator 240.
(24) IV is imitated evaporation and is collected
The III of 240 pairs of inputs of IV single-effect evaporator is imitated yeast waste liquor and is carried out the evaporation of IV effect, this IV is imitated and is evaporated to vacuum-evaporation, formation IV effect juice steam, IV are imitated vapour and are coagulated water and IV effect yeast waste liquor, IV effect juice steam input condensation injector 300 carries out condensation and collects, IV is imitated vapour and is coagulated water and imitate vapour with II and coagulate water, III and imitate vapour and coagulate water and input to second vapour together and coagulate water basin 620, some or all of IV is imitated yeast waste liquor and is inputed to boiler 400 combustion chambers, the waste gas that boiler 400 produces separates through separator 500, as the thermal source of I single-effect evaporator 210.The concentration that IV is imitated yeast waste liquor is 65 ° of BX.
A kind of yeast waste liquor evaporation technology of the present invention adopts two-stage preheating, multiple-effect evaporation technology, and yeast waste liquor is 5 ° of BX by original degree of enrichment, and the concentration of the final yeast waste liquor concentrated solution that obtains is 65 ° of BX after evaporating.These yeast waste liquor concentrated solutions can be supplied with the boiler 400 of heat power plant of brother company as boiler 400 incendiary raw materials.
The yeast waste liquor concentrated solution uses special-purpose atomizing nozzle, pressurization sprays in the thermal power plant boiler 400 at a high speed, mix directly burning of back with coal dust, a steam part that produces can be used for generating, a part is after separator 500 separates, and the supplemental heat source as yeast waste liquor vaporizer 200 has realized recycle, reduced coal consumption, reduced production costs.
A kind of yeast waste liquor circulation treatment method of the present invention, I are imitated vapour and are coagulated water and import first vapour and coagulate water basin 610, the first vapour and coagulate water and stay jar 610 vapour of collecting and coagulate water section or all import boiler 400, so that realize the resource circulation utilization.Vapour of all the other each effects coagulate hydromining with an isobaric string jar drainage technology, are concentrated to second vapour at last and coagulate water basin 620 other water of productive use of work; Because effect is low before the pressure ratio of aftereffect, but thereby water of condensation enters next effect self-evaporatint n. produces heat energy save energy; Have technology and simply be convenient to operation, advantage such as facility investment is few.
According to the characteristic of yeast waste liquor, high fouling and the difficulty of easily forming of vaporization temperature cleaned out, so the present invention operates to reduce fouling with the low-temp low-pressure evaporation technology.Yeast waste liquor can produce a large amount of De Pao Droplets in evaporative process, for preventing to run material, can adopt the low liquid level operation processing method, can guarantee that water of condensation is limpid, clean, is fit to water of productive use.
Yeast waste liquor circulation treatment method provided by the invention can reach the environmental emission standard requirement, has low power consumption, the low steam consumption and characteristics cheaply, has general adaptability.
Should be noted that at last; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although the present invention has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical solution of the present invention.
Claims (8)
1. a yeast waste liquor circulation treatment method is characterized in that: comprise the following steps:
(1) preheating, yeast waste liquor enter preliminary heating device and carry out preheating;
(2) evaporation and collection, the yeast waste liquor after the preheating enters vaporizer and evaporates, and yeast waste liquor forms juice vapour after evaporating, vapour coagulates water and yeast waste liquor concentrated solution,
The described juice vapour of part is imported the thermal source of described preliminary heating device as preliminary heating device, and the described juice vapour input of part condensation injector carries out condensation to be collected,
Described vapour coagulates water input vapour and coagulates the collection of water basin,
Some or all of described yeast waste liquor concentrated solution inputs to boiler furnace, and the steam that described boiler produces is as the thermal source of described vaporizer.
2. a kind of yeast waste liquor circulation treatment method according to claim 1 is characterized in that:
Described step (1) preheating, wherein, described preliminary heating device comprises one-level preliminary heating device and secondary preliminary heating device,
Described step (1) preheating specifically comprises:
(11) one-level preheating, yeast waste liquor enter the one-level preliminary heating device and carry out the one-level preheating, import the secondary preliminary heating device then,
(12) secondary preheating, the yeast waste liquor after the one-level preheating enter the secondary preliminary heating device and carry out the secondary preheating, import vaporizer then.
3. a kind of yeast waste liquor circulation treatment method according to claim 2 is characterized in that:
Described step (2) evaporation is also collected, and wherein, described vaporizer comprises I single-effect evaporator, II single-effect evaporator, III single-effect evaporator and IV single-effect evaporator, and described vapour coagulates the water basin and comprises that first vapour coagulates the water basin and second vapour coagulates the water basin,
Described step (2) evaporation is also collected, and specifically comprises:
(21) I is imitated evaporation and is collected, the I single-effect evaporator of the yeast waste liquor input vaporizer after the preheating carries out I imitates evaporation, formation I effect juice steam, I are imitated vapour and are coagulated water and I effect yeast waste liquor, described I effect juice steam is imported the thermal source of described secondary preliminary heating device as described step (12), described I is imitated vapour and is coagulated water and import first vapour and coagulate the water basin, described I is imitated yeast waste liquor and is inputed to the II single-effect evaporator
(22) II is imitated evaporation and is collected, the II single-effect evaporator is imitated yeast waste liquor to the I of input and is carried out the evaporation of II effect, formation II effect juice steam, II are imitated vapour and are coagulated water and II effect yeast waste liquor, the described II effect juice steam of part is imported the thermal source of described one-level preliminary heating device as described step (11), the described II effect juice steam input of part III single-effect evaporator is as the thermal source of step (23), described II is imitated yeast waste liquor and is inputed to the III single-effect evaporator
(23) III is imitated evaporation and is collected, the III single-effect evaporator is imitated yeast waste liquor to the II of input and is carried out the evaporation of III effect, formation III effect juice steam, III are imitated vapour and are coagulated water and III effect yeast waste liquor, described III effect juice steam input IV single-effect evaporator is as the thermal source of step (24), described III is imitated yeast waste liquor and is inputed to the IV single-effect evaporator
(24) IV is imitated evaporation and is collected, the IV single-effect evaporator is imitated yeast waste liquor to the III of input and is carried out the evaporation of IV effect, formation IV effect juice steam, IV are imitated vapour and are coagulated water and IV effect yeast waste liquor, described IV effect juice steam is imported described condensation injector and is carried out the condensation collection, described IV is imitated vapour and is coagulated water and imitate vapour with described II and coagulate water, described III and imitate vapour and coagulate water and input to second vapour together and coagulate the water basin and collect, some or all of described IV yeast waste liquor inputs to boiler furnace, the steam that described boiler produces is as the thermal source of described I single-effect evaporator.
4. a kind of yeast waste liquor circulation treatment method according to claim 3 is characterized in that: the I effect vapour that described first vapour coagulates water collection in the jar coagulates water section or all imports described boiler.
5. a kind of yeast waste liquor circulation treatment method according to claim 3 is characterized in that: described step (23) III imitate evaporation and collect in the III single-effect evaporator II of input is imitated yeast waste liquor carry out III and imitate and be evaporated to vacuum-evaporation.
6. a kind of yeast waste liquor circulation treatment method according to claim 3 is characterized in that: described step (24) IV imitate evaporation and collect in the IV single-effect evaporator III of input is imitated yeast waste liquor carry out IV and imitate and be evaporated to vacuum-evaporation.
7. a kind of yeast waste liquor circulation treatment method according to claim 3 is characterized in that: described step (21) I imitate evaporation and collect in the vaporization temperature scope that adopts be that 110 ℃～125 ℃, pressure are 1.5～2.4kg/cm
2
8. a kind of yeast waste liquor circulation treatment method according to claim 7 is characterized in that: described step (21) I imitate evaporation and collect in the vaporization temperature that adopts be that 115 ℃, pressure are 2.0kg/cm
2
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104787823A (en) * | 2015-04-17 | 2015-07-22 | 黑龙江鑫达晟机械科技有限公司 | Yeast wastewater zero discharge treatment method |
| WO2022028336A1 (en) * | 2020-08-05 | 2022-02-10 | 安琪酵母股份有限公司 | Method for recycling selenium source in selenium-rich yeast fermentation process and treatment system for selenium-containing wastewater |
-
2010
- 2010-01-28 CN CN2010101039250A patent/CN101767839B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104787823A (en) * | 2015-04-17 | 2015-07-22 | 黑龙江鑫达晟机械科技有限公司 | Yeast wastewater zero discharge treatment method |
| WO2022028336A1 (en) * | 2020-08-05 | 2022-02-10 | 安琪酵母股份有限公司 | Method for recycling selenium source in selenium-rich yeast fermentation process and treatment system for selenium-containing wastewater |
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| CN101767839B (en) | 2011-12-21 |
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