CN101649331A - Comprehensive treatment method of vinegar residues - Google Patents

Abstract

The invention relates to a comprehensive treatment method of vinegar residues, in particular to a waste residue comprehensive utilization method in the field of food processing. The method comprises the following steps: uniformly mixing wet vinegar residues and 0.5-3 % muriatic acid according to a mass ratio of 2:5 and standing and soaking the wet vinegar residues for 24 hours at room temperature;then adding a 0.3-1.0mol/L NaOH solution to cow dung according to a mass ratio of 3:5 to treat the cow dung for 1-2 hours at a treatment temperature of 100 DEG C; adding the treated vinegar residuesand enriched hydrogenogens into an anaerobic fermentation device respectively according to mass ratios of 10-25 percent and 10-20 percent; replenishing 55-80 percent of brewery sewage or tap water toregulate pH to 5.5-7.5; carrying out anaerobic fermentation for 24-36 hours at 25-55 DEG C; generating hydrogen; separating a fermentation liquor from residues in the fermentation system; using a supernate obtained by preparing the hydrogen from the vinegar residues as a substrate and adding active sludge as a mixed strain, wherein the volume ratio of the substrate to the strain is 15-17:3-5; andafter regulating the pH to 7.0 by a 1mol/L NaOH solution, and carrying out fermentation for preparing methane at a fermentation temperature of 30-50 DEG C. The invention realizes the energy and resource utilization of the vinegar residues, avoids resource waste and environmental pollution, and has short treatment time.

Description

The integrated conduct method that a kind of vinegar is poor

Technical field

The present invention relates to the waste reside comprehensive utilization method of food processing field, the integrated conduct method that particularly a kind of vinegar is poor.

Background technology

Vinegar is poor to be to utilize grain raw material to produce the organic waste that discharges in the vinegar process.It is poor more than 2,600,000 tons that vinegar is produced in the whole nation per year, because it is acid organism, nutritive substance is few, natural degradation is slow, never well utilizes approach, and stacking naturally can influence environment again, mostly for a long time is to carry out landfill as rubbish, so the processing poor to vinegar is a great problem of system vinegar industry, is again the big difficult point that urban environmental hygiene is administered.

Poor utilization had many researchs to vinegar, was conceived to mostly can not tackle the problem at its root as feed, fertilizer and culture medium of edible fungus.It as application number 021338074.0 Chinese patent, open day on February 5th, 2003, the name of innovation and creation is called " poor with vinegar is the botanical seedling culturing of raw material and the matrix and the manufacture method thereof of cultivation usefulness ", this application discloses with poor microorganism species, nutritive substance and the acidity regulator of adding of vinegar, stir evenly the solid granular thing of laggard windrow system fermentation, make a kind of method of matrix.Its weak point has been wasted the poor middle nutritive ingredient that exists of vinegar, and fermentation time is long, reaches more than 30 days.Application number is the Chinese patent of 200810055490.X, open day on February 4th, 2009, the name of innovation and creation is called " a kind of method of utilizing Chinese sorghum, wheat bran, the poor slag of cavings vinegar to produce Pleurotus eryngii ", this application discloses a kind of method of utilizing Chinese sorghum, wheat bran, the poor slag of cavings vinegar to produce Pleurotus eryngii, and its weak point is that this method is less to the poor utilization of vinegar.Also have in recent years and adopt direct incendiary mode with vinegar is poor, this method treatment capacity is big, contains nutritive ingredients such as protein, fat but wasted vinegar in poor.

Summary of the invention

Purpose of the present invention overcomes the deficiency of prior art at the wasting of resources, aspect such as the treatment time is long and treatment capacity is little, provide a kind of and can in a large number, efficiently handle the poor method of vinegar, the scientific and rational vinegar that utilizes is poor, realizes energy, resource utilization, nuisancelessization that vinegar is poor.

For achieving the above object, the present invention adopts following technical scheme:

A kind of vinegar be pickled with grains or in wine energy, resource utilization, nuisancelessization treatment process comprise the be pickled with grains or in wine steps such as segmentation anaerobically fermenting of enrichment, hydrogen and the methane of hydrogenogens in pre-treatment, the cow dung of vinegar:

(1) carry out pre-treatment to the wet vinegar collected is poor: the poor and mass concentration of the vinegar that will wet be the hydrochloric acid of 0.5-3% by 2: 5 mass ratio mixing, leave standstill under the room temperature and soak 24h;

(2) hydrogenogens in the cow dung is carried out enrichment: adding concentration according to 3: 5 ratio of mass ratio in cow dung is the NaOH solution of 0.3～1.0mol/L, handles 1～2h, 100 ℃ of treatment temps;

(3) hydrogenogens after pretreated vinegar is poor, the enrichment joins in the anaerobic ferment devices according to 10～25%, 10～20% mass ratio respectively, brewery's sewage of restock 55～80% (perhaps tap water), regulate about pH5.5～7.5 with hydrochloric acid or sodium hydroxide solution, at 25～55 ℃ of temperature bottom fermentations, make and hydrogenogens and the vinegar abundant contact reacts that is pickled with grains or in wine produce hydrogen;

(4) the omnidistance reaction times of hydrogen production through anaerobic fermentation is 24-36h, when aerogenesis stops, the fermented liquid in the fermentation system is separated with residue;

(5) separation is obtained the supernatant liquor fermentation and produce methane, with vinegar lees hydrogen supernatant liquor is substrate, add active sludge as mixed strains, the volume ratio of substrate and bacterial classification is 15～17: 3～5, after regulating about pH to 7.0 with the NaOH solution of 1mol/L, make methane fermentation under 30～50 ℃ of the leavening temperatures;

(6) precipitation after centrifugal according to national fertilizer standard, is carried out the allotment of nitrogen, phosphorus, potassium content, thereby is made biological organic fertilizer after dehydration, oven dry, pulverizing to step (5) fermentation residue and fermented liquid.

Compared with prior art the present invention has following characteristics and beneficial effect: the present invention is poor through pre-treatment to vinegar, adopt the method for anaerobically fermenting, produce hydrogen and methane gas simultaneously, fermentation residue prepares fertilizer, realize poor energy and the resource utilization of vinegar, avoided the wasting of resources and environmental pollution; Treatment time is short, finishes to be generally about 9 days from being dosed into; Treatment capacity is big, can design fermentor tank as required, and is easy to operate.

Description of drawings

Fig. 1 is the process flow sheet of the poor integrated conduct method of a kind of vinegar of the present invention.

Embodiment

The present invention is further detailed explanation below in conjunction with accompanying drawing.

The present invention utilizes biological method to handle vinegar to be pickled with grains or in wine, promptly utilize hydrogenogens after the enrichment and the mud after the domestication, make hydrogen and methane by anaerobically fermenting, fermentation residue obtains biological organic fertilizer through handling, allowing vinegar be pickled with grains or in wine turns waste into wealth, and realizes its resource utilization, energy and nuisancelessization processing.

Embodiment 1

A, carry out pre-treatment to the wet vinegar collected is poor: 875g vinegar is poor, is 1.0% hydrochloric acid soln by the mass concentration of solid-to-liquid ratio adding in 2: 5 2187.5g, leaves standstill 24h under the room temperature.

B, the hydrogenogens in the cow dung is carried out enrichment: it is the NaOH solution of 0.5mol/L that 300g cow dung adds 500ml concentration according to solid-to-liquid ratio at 3: 5, treatment time 1.5h, 100 ℃ of temperature.

C, add in the anaerobic ferment devices pretreated vinegar is poor, the hydrogenogens after the enrichment of inoculation 750g is diluted to 5L with brewery's sewage (perhaps tap water), and with about hydrochloric acid and sodium hydroxide solution adjusting pH6.5,25 ℃ of fermentations are stirred.With this understanding, the accumulation hydrogen output of vinegar residue fermented 48h is 39.12ml/gTS.

Fermented liquid after d, the anaerobically fermenting hydrogen manufacturing after centrifugal, the active sludge of supernatant liquor and the domestication system methane reaction that ferments.Go the supernatant liquor main chemical compositions index behind the thick slag to be: TS 2.1%, and acetate, propionic acid and butyric acid are respectively 1761mg/L, 520mg/L and 2625mg/L.The condition of methane anaerobically fermenting is: getting 1.5L vinegar lees hydrogen supernatant liquor, behind the NaOH solution adjusting pH to 7.0 with 1mol/L, is mixed strains 0.3L with the anaerobic activated sludge, 37 ℃ of leavening temperatures, and the output of methane is at 25ml/gTS.

Precipitation after fermentation residue after e, the anaerobically fermenting hydrogen manufacturing and fermented liquid are centrifugal after dehydration, oven dry, pulverizing, according to fertilizer nutrient standard, by the interpolation of auxiliary material, to nitrogen, phosphorus, the allotment of potassium content composition, obtains biological organic fertilizer.

Embodiment 2

A, carry out pre-treatment to the wet vinegar collected is poor: 500g vinegar is poor, is 0.5% hydrochloric acid by the mass concentration of solid-to-liquid ratio adding in 2: 5 1250g, leaves standstill 24h under the room temperature.

B, the hydrogenogens in the cow dung is carried out enrichment: it is the NaOH solution of 0.3mol/L that 600g cow dung adds 1000ml concentration according to solid-to-liquid ratio at 3: 5, treatment time 2h, 100 ℃ of temperature.

C, add in the anaerobic ferment devices pretreated vinegar is poor, the hydrogenogens after the enrichment of inoculation 500g is diluted to 5L with brewery's sewage (perhaps tap water), and with about hydrochloric acid and sodium hydroxide solution adjusting pH6.5,55 ℃ of fermentations are stirred.With this understanding, the accumulation hydrogen output of vinegar residue fermented 48h is 43.41ml/gTS.。

Fermented liquid after d, the anaerobically fermenting hydrogen manufacturing after centrifugal, the active sludge of supernatant liquor and the domestication system methane reaction that ferments.Go the supernatant liquor main chemical compositions index behind the thick slag to be: TS 2.1%, and acetate, propionic acid and butyric acid are respectively 1761mg/L, 520mg/L and 2625mg/L.The condition of methane anaerobically fermenting is: getting 1.7L vinegar lees hydrogen supernatant liquor, behind the NaOH solution adjusting pH to 7.0 with 1mol/L, is mixed strains 0.5L with the anaerobic activated sludge, 30 ℃ of leavening temperatures, and the output of methane is at 32.13ml/gTS.

Precipitation after fermentation residue after e, the anaerobically fermenting hydrogen manufacturing and fermented liquid are centrifugal after dehydration, oven dry, pulverizing, according to fertilizer nutrient standard, by the interpolation of auxiliary material, to nitrogen, phosphorus, the allotment of potassium content composition, obtains biological organic fertilizer.

Embodiment 3

A, carry out pre-treatment to the wet vinegar collected is poor: 1250g vinegar is poor, is 3% hydrochloric acid by the mass concentration of solid-to-liquid ratio adding in 2: 5 3215g, leaves standstill 24h under the room temperature.

B, the hydrogenogens in the cow dung is carried out enrichment: it is the NaOH solution of 1.0mol/L that 300g cow dung adds 500ml concentration according to solid-to-liquid ratio at 3: 5, treatment time 1h, 100 ℃ of temperature.

C, add in the anaerobic ferment devices pretreated vinegar is poor, the hydrogenogens after the enrichment of inoculation 1000g is diluted to 5L with brewery's sewage (perhaps tap water), and with about hydrochloric acid and sodium hydroxide solution adjusting pH6.5,55 ℃ of fermentations are stirred.With this understanding, the accumulation hydrogen output of vinegar residue fermented 48h is 34.62ml/gTS.。

Fermented liquid after d, the anaerobically fermenting hydrogen manufacturing after centrifugal, the active sludge of supernatant liquor and the domestication system methane reaction that ferments.Go the supernatant liquor main chemical compositions index behind the thick slag to be: TS 2.1%, and acetate, propionic acid and butyric acid are respectively 1761mg/L, 520mg/L and 2625mg/L.The condition of methane anaerobically fermenting is: getting 1.6L vinegar lees hydrogen supernatant liquor, behind the NaOH solution adjusting pH to 7.0 with 1mol/L, is mixed strains 0.4L with the anaerobic activated sludge, 50 ℃ of leavening temperatures, and the output of methane is at 35.14ml/gTS.

Precipitation after fermentation residue after e, the anaerobically fermenting hydrogen manufacturing and fermented liquid are centrifugal after dehydration, oven dry, pulverizing, according to fertilizer nutrient standard, by the interpolation of auxiliary material, to nitrogen, phosphorus, the allotment of potassium content composition, obtains biological organic fertilizer.

Claims (1)

1, the poor integrated conduct method of a kind of vinegar is characterized in that carrying out according to following step:

(1) carry out pre-treatment to the wet vinegar collected is poor: the poor and mass concentration of the vinegar that will wet be the hydrochloric acid of 0.5-3% by 2: 5 mass ratio mixing, leave standstill under the room temperature and soak 24h;

(2) hydrogenogens in the cow dung is carried out enrichment: adding concentration according to 3: 5 ratio of mass ratio in cow dung is the NaOH solution of 0.3～1.0mol/L, handles 1～2h, 100 ℃ of treatment temps;

(3) hydrogenogens after pretreated vinegar is poor, the enrichment joins in the anaerobic ferment devices according to 10～25%, 10～20% mass ratio respectively, restock is 55～80% brewery's sewage or tap water by weight, regulate pH5.5～7.5 with hydrochloric acid or sodium hydroxide solution, at 25～55 ℃ of temperature bottom fermentations, make and hydrogenogens and the vinegar abundant contact reacts that is pickled with grains or in wine produce hydrogen;

(4) the omnidistance reaction times of hydrogen production through anaerobic fermentation is 24-36h, when aerogenesis stops, the fermented liquid in the fermentation system is separated with residue;

(5) separation is obtained the supernatant liquor fermentation and produce methane, with vinegar lees hydrogen supernatant liquor is substrate, adds active sludge as mixed strains, and the volume ratio of substrate and bacterial classification is 15～17: 3～5, after regulating pH to 7.0 with the NaOH solution of 1mol/L, make methane fermentation under 30～50 ℃ of the leavening temperatures;

(6) precipitation after centrifugal according to national fertilizer standard, is carried out the allotment of nitrogen, phosphorus, potassium content, thereby is made biological organic fertilizer after dehydration, oven dry, pulverizing to step (5) fermentation residue and fermented liquid.

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