CN101921306B - System and method for extracting microprotein from sludge through hydrolysis - Google Patents
System and method for extracting microprotein from sludge through hydrolysis Download PDFInfo
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- CN101921306B CN101921306B CN 200910245146 CN200910245146A CN101921306B CN 101921306 B CN101921306 B CN 101921306B CN 200910245146 CN200910245146 CN 200910245146 CN 200910245146 A CN200910245146 A CN 200910245146A CN 101921306 B CN101921306 B CN 101921306B
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention provides a system and a method for extracting microprotein from sludge through hydrolysis, relating to the field of sewage and sludge treatment. The system comprises a sludge storage device, a sludge conveying device, a mixing device, a hydrolysis reaction device, a flash distillation device, a solid-liquid separation device, a residue collecting and conveying device, a filtrate collecting device, a preheating device, an evaporation concentration device, a drying device, a waste gas collecting device, a waste gas treatment device, a waste gas discharge device and a process water recovery device. The extraction method comprises the following steps of: completely hydrolyzing activated sludge, flash distilling, cooling, carrying out solid-liquid separation, and concentrating the filtrate to obtain the microprotein solution product with the concentration of 5%-40% by mass percentage or drying to obtain a microprotein dry powder product. When used for extracting microprotein from sludge through hydrolysis, the invention has the advantages of low energy consumption, high production efficiency and high extraction ratio of microprotein, and the microprotein products have excellent performance and better foaming performance than foaming agents in market.
Description
Technical field
The present invention relates to the sewage sludge process field, particularly a kind of sludge hydrolysis extracting microbial-protein system and extracting method.
Background technology
Along with the increase of wastewater treatment rate and the in-depth of degree for the treatment of, sewage plant sludge output cumulative year after year, water source, atmosphere, soil and human health are caused very large harm, be mainly manifested in the following aspects, (1), to the harm at water source: mud without in measure stacking and the landfill process, produce the heavy metal in a large amount of acid, alkalescence, toxic substance and the mud, flow into earth surface water source behind the rain and be penetrated into below the earth's surface, cause body of groundwater black smelly, water quality deterioration.There has been the pollution of ammonia nitrogen, volatile phenol, permanganate in the river in the whole nation 60% at present, the fluorochemical severe overweight, and the in addition inflow of mud waste water and infiltration, water body has been lost self-purification function, affects aquatic organism breeding and water resources utilization.(2), to the pollution of atmospheric environment: owing to burn or stack for a long time, dump mud and discharge the toxic gas such as a large amount of stench, dioxin, sulfurous gas, dust and fine particle suspended substance move with the wind, cause that sulfurous gas and suspended particulate exceed standard in the air, acid rain phenomenon and airborne dust weather occur again and again.(3), to the harm in soil: eroded field, sludge creation amount are about 1,800 ten thousand ton/years, organism and heavy metal, the objectionable impuritiess such as pathogenic bacteria are retained in the soil, the material heavy corrosion soil of hard degradation, polluted underground water source.(4), to the harm of HUMAN HEALTH: sludge incineration, landfill discharges a large amount of dust Ji the toxic gases such as dioxin, sulfurous gas consist of carcinogenic hidden danger to human body in the stacking process.The groundwater pollutant content overproof causes diarrhoea, schistosomicide, trachoma etc., and special Yi dioxin is for the most serious.
The mud granule of municipal wastewater treatment plant discharging is very thin, be rich in organic matter, but a large amount of mud without stabilizing treatment do not have normal outlet at present, not only become the heavy burden of sewage work, and any discharging of mud and to stack the new pollution that surrounding environment is caused startling, the resource utilization of mud is the direction and goal that global various countries are pursued, and will become the unique final outlet of mud.
The at present both at home and abroad research for the extraction of sludge protein substantially also all rests on the laboratory study stage, have no the large-scale production report, extract protein equipment for sludge hydrolytic, Chinese patent application number is 200610019063.7 to disclose a kind of production technology and equipments with the standby protein hydrolysate of unslaked lime hydrolysis made from residual actived sludge, with residual active sludge, water, unslaked lime in 1: 1: 0.06 ratio mix and blend 20-30 minute; Mixed solution is pumped in the hydrolytic reaction pot is hydrolyzed, operating pressure is that 0.4-0.7MPa, hydrolysis temperature are that hydrolysis time is 1-3 hour, constantly passes into steam when being incubated in the hydrolytic process and stirs the hydrolysis mixed solution under 135 ℃-150 ℃ the condition; Be hydrolyzed completely, adopt in the reactor residual pressure to carry out direct filtration; Filtering solution is concentrated in the long tube thickening equipment after with the salt acid for adjusting pH value, obtain product.The problem that above-mentioned technique exists is as follows: (1), constantly pass into steam and stir, destroyed the homogeneity of material in the hydrolytic process, can not guarantee the balance of water in the hydrolytic process, affect hydrolysis effect; (2), material directly utilizes residual pressure to filter after the hydrolysis, along with the carrying out of filtering, the still internal pressure reduces gradually, so that can not finish solid-liquid separation; (3), the hydrolysis material before entering filter plant, refrigerating unit is not set, material relies on naturally cooling, can not guarantee the immediately termination of hydrolysis reaction, affects quality product; (4), hydrolysis is filtered after complete immediately then can be too high because of temperature of charge, causes the damage of filter plant, can not finish solid-liquid separation; (5), mention in this patent the filtrate after filtering concentrated in the long tube thickening equipment, single-action long tube evaporation power consumption is higher, evaporation time is long, can not guarantee the product performance of sludge protein.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of sludge hydrolysis extracting microbial-protein system and extracting method are provided, efficient, practicality, the full resource utilization zero discharge treatment of realization mud.
The technical solution used in the present invention is as follows:
A kind of sludge hydrolysis extracting microbial-protein system, comprise sewage sludge storage device, sludge conveyer, blending device, hydrolysis reaction device, flash distillation plant, equipment for separating liquid from solid, residue collection e Foerderanlage, Filtrate collection device, primary heater unit, evaporation concentration device, drying installation, waste gas collection device, emission-control equipment, exhaust emission device, process water retrieving arrangement.
The exit end of sewage sludge storage device is connected with the opening for feed of blending device by sludge conveyer, the discharge port of blending device is connected with the opening for feed of hydrolysis reaction device by pump, the discharge port of hydrolysis reaction device is connected by pipeline with the opening for feed of flash distillation plant, the discharge port of flash distillation plant is connected with the opening for feed of equipment for separating liquid from solid by pump, the residue exit end of equipment for separating liquid from solid is collected e Foerderanlage with residue and is connected, the filtrate outlet end of equipment for separating liquid from solid is connected with the inlet end of Filtrate collection device by pipeline, the exit end of Filtrate collection device is connected with the entrance end of primary heater unit by pump, the exit end of primary heater unit is connected with the entrance end of evaporation concentration device, the storage tank exit end of evaporation concentration device is connected with drying installation by pump, the condensation-water drain end of evaporation concentration device is connected with the entrance end of process water retrieving arrangement, the exit end of process water retrieving arrangement is connected with the opening for feed of blending device by pump, blending device, flash distillation plant, equipment for separating liquid from solid, the top of Filtrate collection device is provided with waste gas collection device, and waste gas collection device is connected with exhaust emission device through emission-control equipment again.
Described sludge conveyer is at least a in (but being not limited only to) spiral conveyer, the pump.
Described blending device is furnished with agitator for the cone end or oval bottom structure.
Described hydrolysis reaction device is oval bottom structure, is furnished with well heater and agitator.
Described flash distillation plant is the cone end or oval bottom structure.
Described equipment for separating liquid from solid is at least a in (but being not limited only to) whizzer, sheet frame squeezing, the belt filtration.
Described Filtrate collection device is the cone end or oval bottom structure.
Described primary heater unit is at least a in (but being not limited only to) tubulation, the flat plate heat exchanger.
Described evaporation concentration device is triple-effect evaporator, and vaporizer is at least a in (but being not limited only to) natural-circulation evaporator, pump feed evaporator, the film-type evaporator.
Described drying installation is at least a in (but being not limited only to) intermittent stirring drying, roller drying, spraying drying, fluidised bed drying, vacuum belt drying, convection current tray drying, the air stream drying.
With the method for sludge hydrolysis extracting microbial-protein system extraction microprotein, step is:
A, with the primary sludge of municipal sewage plant water ratio 70%-90%, be temporarily stored in the sewage sludge storage device, together enter blending device by sludge conveyer and medicament, the adjusting material water ratio is that 92%-96%, pH value are 10-13, mixes;
B, the material after mixing heat simultaneously, stir by being pumped into hydrolysis reaction device, and making temperature of charge is 105 ℃-185 ℃, and the residence time is 1-4 hour;
Material enters flash distillation plant flash distillation cooling after c, the hydrolysis under the reactor pressure effect, leftover materials are by being pumped into equipment for separating liquid from solid after the flash distillation, the sludge residue water content is less than 50% after the solid-liquid separation, adopt residue collection e Foerderanlage to be transported to job shop production and become greening soil or greening fertilizer, and finish the packing of product, the filtrate collection that obtains enters Filtrate collection device;
D, filtrate is sent into evaporation concentration device after the primary heater unit preheating again and concentrated by being pumped into, getting mass concentration is the microprotein solution product of 5%-40%, or concentrated solution carried out drying by being pumped into drying installation, get the microprotein power-product;
E, the water that reclaimed by the process water retrieving arrangement recycle by being pumped into blending device.
Described medicament is at least a in (but being not limited only to) calcium hydroxide, sodium hydroxide or the potassium hydroxide.
The beneficial effect that the present invention has:
1, adopts the present invention, be used for sludge hydrolysis extracting microbial-protein, material loading, batching, hydrolysis, flash distillation, filtration, evaporation, drying, energy consumption is low, and production efficiency is high, and the microprotein extraction yield is high, the microprotein product performance are good, its foam performance is better than commercially available whipping agent, and the sludge residue water content is less than 50% after the solid-liquid separation, and adopting residue collection e Foerderanlage to be transported to job shop production becomes greening soil or greening fertilizer.
2, adopting process water reclamation system of the present invention realizes the recycle of process water, and the gas that discharges in the production process discharges through after the collection and treatment, well below relevant national standard.
3, adopt the present invention, realize the full resource utilization zero discharge treatment of mud, be fit to the recycling treatment of each municipal sludge treatment plant mud of the whole nation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Wherein, 1 is the sewage sludge storage device; 2 is sludge conveyer; 3 is blending device; 4 is pump; 5 is hydrolysis reaction device; 6 is flash distillation plant; 7 is pump; 8 is equipment for separating liquid from solid; 9 are residue collection e Foerderanlage; 10 is Filtrate collection device; 11 is pump; 12 is primary heater unit; 13 is evaporation concentration device; 14 is waste gas collection device; 15 is emission-control equipment; 16 is exhaust emission device; 17 is pump; 18 is drying installation; 19 is the process water retrieving arrangement; 20 is pump.
Embodiment
The present invention is described further below in conjunction with specific embodiment.
Embodiment 1:
The system of sludge hydrolysis extracting microbial-protein, comprise sewage sludge storage device 1, sludge conveyer 2, blending device 3, hydrolysis reaction device 5, flash distillation plant 6, equipment for separating liquid from solid 8, residue collection e Foerderanlage 9, Filtrate collection device 10, primary heater unit 12, evaporation concentration device 13, drying installation 18, waste gas collection device 14, emission-control equipment 15, exhaust emission device 16, process water retrieving arrangement 19.
The exit end of sewage sludge storage device 1 is connected with the opening for feed of blending device 3 by sludge conveyer 2, the discharge port of blending device 3 is connected by pipeline by the opening for feed of pump 4 with hydrolysis reaction device 5, the discharge port of hydrolysis reaction device 5 is connected by pipeline with the opening for feed of flash distillation plant 6, the discharge port of flash distillation plant 6 is connected with the opening for feed of equipment for separating liquid from solid 8 by pump 7, the residue exit end of equipment for separating liquid from solid 8 is collected e Foerderanlage 9 with residue and is connected, the filtrate outlet end of equipment for separating liquid from solid 8 is connected by the inlet end of pipeline with Filtrate collection device 10, the exit end of Filtrate collection device 10 is connected with the entrance end of primary heater unit 12 by pump 11, the exit end of primary heater unit 12 is connected with the entrance end of evaporation concentration device 13, the storage tank exit end of evaporation concentration device 13 is connected with drying installation 18 by pump 17, the condensation-water drain end of evaporation concentration device 13 is connected with the entrance end of process water retrieving arrangement 19, the exit end of process water retrieving arrangement 19 is connected with the opening for feed of blending device 3 by pump 20, blending device 3, flash distillation plant 6, equipment for separating liquid from solid 8, the top of Filtrate collection device 10 is provided with waste gas collection device 14, and waste gas collection device 14 is connected with exhaust emission device 16 through emission-control equipment 15 again.
Described sludge conveyer 2 is spiral conveyer, described equipment for separating liquid from solid 8 is sheet frame expression separation equipment, described primary heater unit 12 is tubular heat exchanges, and described evaporation concentration device 13 is the triple effect pump feed evaporator, and described drying installation 18 is pneumatic conveying dryer.
Primary sludge with municipal sewage plant's water ratio 80%, be temporarily stored in the sewage sludge storage device 1, together enter blending device 3 by spiral conveyer and calcium hydroxide, regulating material water ratio is 92%, the pH value is 13, adopt alr mode that material is evenly mixed, send into hydrolysis reaction device 5 by pump 4, simultaneously heating, stir, making temperature of charge is 105 ℃, the residence time is 4 hours, after hydrolysis reaction finishes, material enters flash distillation plant 6 under the reactor pressure effect, realize initial evaporation and the cooling of material, leftover materials are sent into sheet frame expression separation equipment by pump 7 after the flash distillation, the sludge residue water content is less than 50% after the solid-liquid separation, adopt residue collection e Foerderanlage 9 to be transported to job shop production and become greening soil or greening fertilizer, and finish the packing of product, the filtrate collection that obtains enters Filtrate collection device 10, send into again the triple effect pump feed evaporator after at last filtrate being sent into the tubular heat exchange preheating by pump 11, realize the evaporation concentration of filtrate, obtain mass concentration and be 40% microprotein solution, send into pneumatic conveying dryer through pump 17 and carry out drying, get the microprotein power-product, send into blending device 3 by the water that process water retrieving arrangement 19 is collected by pump 20, recycle.
Embodiment 2:
The system of sludge hydrolysis extracting microbial-protein, comprise sewage sludge storage device 1, sludge conveyer 2, blending device 3, hydrolysis reaction device 5, flash distillation plant 6, equipment for separating liquid from solid 8, residue collection e Foerderanlage 9, Filtrate collection device 10, primary heater unit 12, evaporation concentration device 13, drying installation 18, waste gas collection device 14, emission-control equipment 15, exhaust emission device 16, process water retrieving arrangement 19.
The exit end of sewage sludge storage device 1 is connected with the opening for feed of blending device 3 by sludge conveyer 2, the discharge port of blending device 3 is connected by pipeline by the opening for feed of pump 4 with hydrolysis reaction device 5, the discharge port of hydrolysis reaction device 5 is connected by pipeline with the opening for feed of flash distillation plant 6, the discharge port of flash distillation plant 6 is connected with the opening for feed of equipment for separating liquid from solid 8 by pump 7, the residue exit end of equipment for separating liquid from solid 8 is collected e Foerderanlage 9 with residue and is connected, the filtrate outlet end of equipment for separating liquid from solid 8 is connected by the inlet end of pipeline with Filtrate collection device 10, the exit end of Filtrate collection device 10 is connected with the entrance end of primary heater unit 12 by pump 11, the exit end of primary heater unit 12 is connected with the entrance end of evaporation concentration device 13, the storage tank exit end of evaporation concentration device 13 is connected with drying installation 18 by pump 17, the condensation-water drain end of evaporation concentration device 13 is connected with the entrance end of process water retrieving arrangement 19, the exit end of process water retrieving arrangement 19 is connected with the opening for feed of blending device 3 by pump 20, blending device 3, flash distillation plant 6, equipment for separating liquid from solid 8, the top of Filtrate collection device 10 is provided with waste gas collection device 14, and waste gas collection device 14 is connected with exhaust emission device 16 through emission-control equipment 15 again.
Described sludge conveyer 2 is pump, and described equipment for separating liquid from solid 8 is centrifugal separation equipments, and described primary heater unit 12 is tubular heat exchanges, and described evaporation concentration device 13 is the triple effect film-type evaporator, and described drying installation 18 is spray drying device.
Primary sludge with municipal sewage plant's water ratio 80%, be temporarily stored in the sewage sludge storage device 1, together enter blending device 3 by pump and sodium hydroxide, regulating material water ratio is 94%, the pH value is 12, adopt alr mode that material is evenly mixed, send into hydrolysis reaction device 5 by pump 4, simultaneously heating, stir, making temperature of charge is 105 ℃, the residence time is 4 hours, after hydrolysis reaction finishes, material enters flash distillation plant 6 under the reactor pressure effect, realize initial evaporation and the cooling of material, leftover materials are sent into centrifugal separation equipment by pump 7 after the flash distillation, the sludge residue water content is less than 50% after the solid-liquid separation, adopt residue collection e Foerderanlage 9 to be transported to job shop production and become greening soil or greening fertilizer, and finish the packing of product, the filtrate collection that obtains enters Filtrate collection device 10, send into again the triple effect film-type evaporator after at last filtrate being sent into the tubular heat exchange preheating by pump 11, realize the evaporation concentration of filtrate, obtain mass concentration and be 30% microprotein solution, send into spray drying device through pump 17 and carry out drying, get the microprotein power-product, send into blending device 3 by the water that process water retrieving arrangement 19 is collected by pump 20.
Embodiment 3:
The system of sludge hydrolysis extracting microbial-protein, comprise sewage sludge storage device 1, sludge conveyer 2, blending device 3, hydrolysis reaction device 5, flash distillation plant 6, equipment for separating liquid from solid 8, residue collection e Foerderanlage 9, Filtrate collection device 10, primary heater unit 12, evaporation concentration device 13, drying installation 18, waste gas collection device 14, emission-control equipment 15, exhaust emission device 16, process water retrieving arrangement 19.
The exit end of sewage sludge storage device 1 is connected with the opening for feed of blending device 3 by sludge conveyer 2, the discharge port of blending device 3 is connected by pipeline by the opening for feed of pump 4 with hydrolysis reaction device 5, the discharge port of hydrolysis reaction device 5 is connected by pipeline with the opening for feed of flash distillation plant 6, the discharge port of flash distillation plant 6 is connected with the opening for feed of equipment for separating liquid from solid 8 by pump 7, the residue exit end of equipment for separating liquid from solid 8 is collected e Foerderanlage 9 with residue and is connected, the filtrate outlet end of equipment for separating liquid from solid 8 is connected by the inlet end of pipeline with Filtrate collection device 10, the exit end of Filtrate collection device 10 is connected with the entrance end of primary heater unit 12 by pump 11, the exit end of primary heater unit 12 is connected with the entrance end of evaporation concentration device 13, the storage tank exit end of evaporation concentration device 13 is connected with drying installation 18 by pump 17, the condensation-water drain end of evaporation concentration device 13 is connected with the entrance end of process water retrieving arrangement 19, the exit end of process water retrieving arrangement 19 is connected with the opening for feed of blending device 3 by pump 20, blending device 3, flash distillation plant 6, equipment for separating liquid from solid 8, the top of Filtrate collection device 10 is provided with waste gas collection device 14, and waste gas collection device 14 is connected with exhaust emission device 16 through emission-control equipment 15 again.
Described sludge conveyer 2 is spiral conveyer, described equipment for separating liquid from solid 8 is sheet frame expression separation equipment, described primary heater unit 12 is flat plate heat exchangers, the triple-effect evaporator that described evaporation concentration device 13 combines with pump feed evaporator for membrane type.
Primary sludge with municipal sewage plant's water ratio 90%, be temporarily stored in the sewage sludge storage device 1, together enter blending device 3 by spiral conveyer and calcium hydroxide, regulating material water ratio is 96%, the pH value is 13, adopt alr mode that material is evenly mixed, send into hydrolysis reaction device 5 by pump 4, simultaneously heating, stir, making temperature of charge is 110 ℃, the residence time is 1 hour, after hydrolysis reaction finishes, material enters flash distillation plant 6 under the reactor pressure effect, realize initial evaporation and the cooling of material, leftover materials are sent into sheet frame expression separation equipment by pump 7 after the flash distillation, the sludge residue water content is less than 50% after the solid-liquid separation, adopt residue collection e Foerderanlage 9 to be transported to job shop production and become greening soil or greening fertilizer, and finish the packing of product, the filtrate collection that obtains enters Filtrate collection device 10, send into again the triple effect evaporation equipment that membrane type combines with pump feed evaporator after at last filtrate being sent into the flat plate heat exchanger preheating by pump 11, realize the evaporation concentration of filtrate, obtain mass concentration and be 20% microprotein solution product, send into blending device 3 by the water that process water retrieving arrangement 19 is collected by pump 20, recycle.
The above only is preferred embodiment of the present invention, is not technical scheme of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment does.
Claims (9)
1. sludge hydrolysis extracting microbial-protein device, it is characterized in that: comprise sewage sludge storage device (1), sludge conveyer (2), blending device (3), hydrolysis reaction device (5), flash distillation plant (6), equipment for separating liquid from solid (8), residue is collected e Foerderanlage (9), Filtrate collection device (10), primary heater unit (12), evaporation concentration device (13), drying installation (18), waste gas collection device (14), emission-control equipment (15), exhaust emission device (16), process water retrieving arrangement (19);
The exit end of sewage sludge storage device (1) is connected with the opening for feed of blending device (3) by sludge conveyer (2), the discharge port of blending device (3) is connected with the opening for feed of hydrolysis reaction device (5) by pump (4), the discharge port of hydrolysis reaction device (5) is connected by pipeline with the opening for feed of flash distillation plant (6), the discharge port of flash distillation plant (6) is connected with the opening for feed of equipment for separating liquid from solid (8) by pump (7), the residue exit end of equipment for separating liquid from solid (8) is collected e Foerderanlage (9) with residue and is connected, the filtrate outlet end of equipment for separating liquid from solid (8) is connected by the inlet end of pipeline with Filtrate collection device (10), the exit end of Filtrate collection device (10) is connected with the entrance end of primary heater unit (12) by pump (11), the exit end of primary heater unit (12) is connected with the entrance end of evaporation concentration device (13), the storage tank exit end of evaporation concentration device (13) is connected with drying installation (18) by pump (17), the condensation-water drain end of evaporation concentration device (13) is connected with the entrance end of process water retrieving arrangement (19), the exit end of process water retrieving arrangement (19) is connected with the opening for feed of blending device (3) by pump (20), blending device (3), flash distillation plant (6), equipment for separating liquid from solid (8), the top of Filtrate collection device (10) is provided with waste gas collection device (14), and waste gas collection device (14) is connected with exhaust emission device (16) through emission-control equipment (15) again.
2. sludge hydrolysis extracting microbial-protein device according to claim 1, it is characterized in that: described sludge conveyer (2) is at least a in spiral conveyer, the pump, described blending device (3) is furnished with agitator for the cone end or oval bottom structure.
3. sludge hydrolysis extracting microbial-protein device according to claim 1, it is characterized in that: described hydrolysis reaction device (5) is oval bottom structure, be furnished with well heater and agitator, described flash distillation plant (6) is the cone end or oval bottom structure.
4. sludge hydrolysis extracting microbial-protein device according to claim 1, it is characterized in that: described equipment for separating liquid from solid (8) is at least a in whizzer, sheet frame pressing device, the belt filtering device.
5. sludge hydrolysis extracting microbial-protein device according to claim 1 is characterized in that: described Filtrate collection device (10) is the cone end or oval bottom structure.
6. sludge hydrolysis extracting microbial-protein device according to claim 1, it is characterized in that: described primary heater unit (12) is at least a in tubular heat exchange, the flat plate heat exchanger.
7. sludge hydrolysis extracting microbial-protein device according to claim 1, it is characterized in that: described evaporation concentration device (13) is triple-effect evaporator, and vaporizer is at least a in natural-circulation evaporator, pump feed evaporator, the film-type evaporator.
8. sludge hydrolysis extracting microbial-protein device according to claim 1, it is characterized in that: described drying installation (18) is at least a in intermittent stirring drying installation, roller drying device, spray drying unit, fluidized bed drying device, vacuum belt drying device, convection current disc type drying installation, the Pneumatic drying device.
9. one kind is extracted the method for microprotein with the described sludge hydrolysis extracting microbial-protein device of claim 1, it is characterized in that: comprising:
A, with the primary sludge of municipal sewage plant water ratio 70%-90%, be temporarily stored in the sewage sludge storage device (1), together enter blending device (3) by sludge conveyer (2) and medicament, the adjusting material water ratio is that 92%-96%, pH value are 10-13, mixes;
B, the material after mixing are sent into hydrolysis reaction device (5) by pump (4), heat simultaneously, stir, and making temperature of charge is 105 ℃-185 ℃, and the residence time is 1-4 hour;
Material enters flash distillation plant (6) flash distillation cooling after c, the hydrolysis under the reactor pressure effect, leftover materials are sent into equipment for separating liquid from solid (8) by pump (7) after the flash distillation, the sludge residue water content is less than 50% after the solid-liquid separation, adopt residue collection e Foerderanlage (9) to be transported to job shop production and become greening soil or greening fertilizer, and finish the packing of product, the filtrate collection that obtains enters Filtrate collection device (10);
D, filtrate sent into by pump (11) send into again evaporation concentration device (13) after primary heater unit (12) preheating and concentrate, getting mass concentration is the microprotein solution product of 5%-40%, or concentrated solution is sent into drying installation (18) by pump (17) carry out drying, get the microprotein power-product;
E, the water that is reclaimed by process water retrieving arrangement (19) are sent into blending device (3) by pump (20), recycle;
Described medicament is at least a in calcium hydroxide, sodium hydroxide or the potassium hydroxide.
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| CN102775218A (en) * | 2012-08-14 | 2012-11-14 | 天津市裕川微生物制品有限公司 | Method for preparing plant nutrient solution from sludge microproteins |
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| CN105505776B (en) * | 2015-12-28 | 2019-01-22 | 江南大学 | A kind of production method of protein, system and product |
| CN106830589A (en) * | 2017-02-04 | 2017-06-13 | 协赛(上海)生物科技有限公司 | A kind of method that sludge sour water solution extracts microbial amino acid |
| CN108285305B (en) * | 2017-12-03 | 2021-05-04 | 新疆阜丰生物科技有限公司 | Method for preparing building material by using microbial activated sludge |
| CN108294164B (en) * | 2018-03-29 | 2022-02-01 | 江南大学 | Method and system for industrially preparing 7S protein of soybean protein |
| CN109400671B (en) * | 2018-11-12 | 2021-12-07 | 湖北华耀生物科技有限公司 | Method for extracting microbial protein from excess sludge |
| CN212077054U (en) * | 2019-05-10 | 2020-12-04 | 邦泰生物工程(深圳)有限公司 | Enzyme method large-scale production system for Rh2 |
| CN114106081B (en) * | 2021-11-29 | 2023-10-03 | 江南大学 | Method for extracting protein from excess sludge |
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