Method and device for preparing glucose from starch processing wastewater

Abstract

The invention discloses a method and device for preparing glucose from starch processing wastewater, the device comprises a mixing cylinder, a liquid inlet pipe, an adjusting disc and a support, the liquid inlet pipe is fixedly connected to the top of the mixing cylinder, a supporting column is arranged at the bottom of the mixing cylinder, the adjusting disc is fixedly connected to the surface of the supporting column, and the support is fixedly connected to the bottom of the supporting column. The mixing cylinder comprises a driving block arranged in the top plate, a stirring piece arranged at the output end of the driving block, a filtering piece arranged on the surface of the stirring piece and matched with the stirring piece for use, a heating plate arranged on the inner bottom wall of the mixing cylinder, and a sealing cover arranged on the outer wall of the mixing cylinder and detachably connected with the mixing cylinder. According to the method and the device for preparing the glucose from the starch processing wastewater, after starch waste liquid is filtered by the filtering piece, the waste liquid is stored in the lower space in the mixing barrel, filtered particles are stored in the upper space in the mixing barrel, the filtered particles are concentrated together through cooperation with the stirring piece, and the glucose is prepared by opening the sealing cover. Filtered particles can be conveniently collected and treated.

Description

Technical Field

[0001] The invention relates to the technical field of starch wastewater, and in particular to a method and a device for preparing glucose from starch processing wastewater. Background Art

[0002] In the starch production process, washing, soaking, starch refining, saccharification, derivatization and other processes will produce a large amount of wastewater, which contains a large amount of starch, protein, sugar and other organic matter. The content of COD, SS and protein in the wastewater can reach 6000-30000mg / L, 8500-10000mg / L and 2000-8000mg / L respectively. Direct discharge of wastewater will not only affect the eutrophication of water bodies, but also consume a large amount of dissolved oxygen in the water, affect the growth of fish, and also lead to waste of resources.

[0003] The current treatment method for starch wastewater is to first precipitate the wastewater, then use microfiltration membrane or ultrafiltration membrane to filter out the large molecular particles in the wastewater, and then discharge the filtered water. The filtered material is directly dried and buried, resulting in the waste of proteins, sugars, starch and other substances in the filtered large molecular particles. At present, the treated large molecular particles are also recycled to produce by-products such as glucose.

[0004] However, during the filtration process, the filter membrane needs to be constantly replaced, and the filtered starch and other substances have high viscosity and are difficult to fall off the filter membrane, resulting in high processing costs and troublesome replacement. Therefore, further improvements are made to the existing technology. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a method and device for preparing glucose from starch processing wastewater, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented by the following technical scheme: A method for preparing glucose from starch processing wastewater, comprising the following steps: (1) filtering the starch wastewater through a 20-30 μm filter, adding Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis to the filtered wastewater, stirring and heating at 40-50° C. for 1-2 hours to obtain a first fermentation liquid; (2) Then add nano Na to the first fermentation broth 2 CO 3 Stir evenly, heat at 100-150℃ for 30-40min to sterilize and inactivate enzymes, and then use a vacuum device to filter the fermentation liquid through a 50-100nm filter at 100-150Pa; (3) Adding Bacillus cyclosporus and Xerosporus bisporus to the filtrate in step (2), stirring and heating at 35-40° C. for 0.5-1 h to obtain a second fermentation liquid; (4) Add nano Na to the second fermentation broth 2 CO 3 After stirring evenly, heat at 200-250°C for 20-40 minutes, use a vacuum device to filter the fermentation liquid through a 1-5 nm filter at 100-150 Pa, and after the filtrate is dried, grind into powder to obtain glucose powder.

[0007] Furthermore, the wastewater after filtering in the step (1) is mixed with Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis to form bacterial powder, and the mass volume ratio of the wastewater after filtering to Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis is 50-80 ml: 1-2 mg: 0.5-2 mg: 2-5 mg.

[0008] Furthermore, in the step (3), the Bacillus cyclosporus and Xerosporus bisporus are bacterial powders, and the mass volume ratio of the filtrate to the Bacillus cyclosporus and Xerosporus bisporus is: 30-40 ml: 2-5 mg: 0.5-1 mg.

[0009] Furthermore, in step (2), Na 2 CO 3 The mass volume ratio of the first fermentation liquid is 5-10mg:50-100ml; in the step (4), Na 2 CO 3 The mass volume ratio of the second fermentation liquid is 2-5mg:50-100ml.

[0010] A preparation device for preparing glucose from starch processing wastewater, comprising a mixing cylinder, a liquid inlet pipe, an adjusting disk and a support, wherein the liquid inlet pipe is fixedly connected to the top of the mixing cylinder, a support is provided at the bottom of the mixing cylinder, the adjusting disk is fixedly connected to the bottom of the support, and the support is fixedly connected to the bottom of the adjusting disk; The mixing barrel comprises a driving block arranged in the top plate, a stirring member arranged at the output end of the driving block, a filtering member arranged on the surface of the stirring member and used in conjunction with the stirring member, a heating plate arranged on the inner bottom wall of the mixing barrel, a detachably connected sealing cover arranged on the outer wall of the mixing barrel, and a feeding pipe arranged on the outer wall of the mixing barrel; The upper surface of the regulating disk is provided with a first filter cartridge and a second filter cartridge, a vacuum assembly is provided on the horizontal plate of the outer wall of the mixing cylinder, and the output end of the vacuum assembly cooperates with the first filter cartridge and the second filter cartridge to filter impurities in the wastewater, and a liquid pumping assembly is provided inside the support, and the liquid inlet end of the liquid pumping assembly is connected with the first filter cartridge, and the liquid outlet end is connected with the mixing cylinder through a support; A placement plate is fixedly connected to the bottom of the outer wall of the mixing cylinder, and a driving member used in conjunction with the adjusting disk is provided at one end of the placement plate along the first direction, for driving the mixing cylinder to rotate. A pressure assembly is provided inside the adjusting disk, and a control module used in conjunction with the vacuum assembly, the pressure assembly and the driving member is provided at the bottom of the outer wall of the mixing cylinder, and they are electrically connected to each other.

[0011] Furthermore, the stirring member includes a stirring rod fixedly connected to the output end of the driving block, a connecting rod provided on the surface of the stirring rod, and a scraper provided at an end of the connecting rod away from the stirring rod; The filter element includes a filter plate arranged in the mixing barrel and sleeved on the surface of the stirring rod, a baffle fixedly connected to the inner wall of the mixing barrel and abutting against the bottom buckle plate of the filter plate, and a spring 1 fixedly connected to the upper surface of the baffle, and the top end of the spring 1 is fixedly connected to the inner top wall of the buckle plate.

[0012] Furthermore, a discharge trough is provided inside the mixing cylinder, the scraper is provided inside the discharge trough, and a protrusion is fixedly connected to the upper surface of the filter plate, close to the other end of the connecting rod; The liquid pumping assembly comprises a water pump arranged inside the pillar, a T-shaped pipe arranged at the liquid inlet end of the water pump and connected with the first filter cartridge, and a vertical pipe arranged at the liquid outlet end of the water pump and connected with the mixing cartridge.

[0013] Furthermore, a docking cover is threadedly connected to the upper surfaces of the first filter cartridge and the second filter cartridge, a hollow plate is fixedly connected to the interior and inlet ends of the first filter cartridge and the second filter cartridge, a first filter membrane is placed on the upper surfaces of the first filter cartridge and the hollow plate, a second filter membrane is provided on the upper surfaces of the second filter cartridge and the hollow plate, a discharge pipe is provided at the bottom of the second filter cartridge, and a valve is provided on the surface of the discharge pipe.

[0014] Furthermore, the vacuum assembly includes a water ring vacuum pump arranged on a horizontal plate on the outer wall of the mixing cylinder, a curved pipe 1 arranged on the liquid inlet end of the water ring vacuum pump, and a curved pipe 2 fixedly connected to the liquid outlet end of the water ring vacuum pump; an electric telescopic rod is fixedly connected to the bottom of the horizontal plate on the outer wall of the mixing cylinder, the output end of the electric telescopic rod is fixedly connected to a docking pipe, the other end of the curved pipe 2 is fixedly connected to an auxiliary pipe, the bottom end of the auxiliary pipe is fixedly connected to the surface of the docking pipe, and the bottom end of the docking pipe is used in conjunction with a docking cover.

[0015] Furthermore, the driving member includes an auxiliary rod fixedly connected to the placement plate and away from one end of the mixing barrel, a motor arranged inside the auxiliary rod, and a gear rod arranged at the output end of the motor, the bottom end of the auxiliary rod is clamped at the edge of the adjustment disk, the side surface of the edge of the adjustment disk is provided with teeth, and the bottom end of the gear rod is meshed and connected with the teeth; The pressure assembly includes a pressure column inserted into the edge of the adjustment disk, a spring 2 arranged on the surface of one end of the pressure column extending deep into the adjustment disk, and a pressure sensor arranged inside the adjustment disk and below the pressure column. The pressure assembly is used in conjunction with the bottom end of the auxiliary rod.

[0016] The present invention has the following beneficial effects: The starch wastewater of the present invention is filtered through a 20-30 μm filter to remove macromolecular impurities in the starch wastewater, and then mixed fermentation is performed using Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis. The macromolecular amylose or amylose and amylopectin are decomposed into small molecular maltose and part of glucose in the first fermentation, and nano Na is added. 2 CO 3 It absorbs free harmful substances in the fermentation process and prevents the aggregation of small molecular maltose and glucose after decomposition. After sterilization and enzyme inactivation, Bacillus cyclosporus and Xerosaccharomyces bisporus are added for further fermentation to decompose the undecomposed maltose into glucose. At the same time, nano Na 2 CO 3 It absorbs free harmful substances during the fermentation process and prevents aggregation after decomposition.

[0017] The method and device for preparing glucose from starch processing wastewater, after the starch waste liquid is filtered by the filter element, the waste liquid is stored in the lower space of the mixing cylinder, and the filtered particles are stored in the upper space of the mixing cylinder. The filtered particles are concentrated together by cooperating with the stirring element, and the filtered particles can be conveniently collected and processed by opening the sealing cover; when the vacuum component draws the waste liquid into the interior of the first filter cartridge, the waste liquid can be filtered again, and when it is necessary to replace the second filter cartridge, the vacuum component is driven to rotate by the driving component, and is positioned with the cooperation of the pressure component, so that the use position of the vacuum component can be quickly adjusted, which is convenient for replacing the first filter cartridge, and when the driving component rotates again, it is convenient to replace the second filter cartridge; The method and device for preparing glucose from starch processing wastewater can quickly dock the docking pipe and the docking cover through an electric telescopic rod, so that the waste liquid can be processed quickly and conveniently. When the vacuum component draws the liquid into the first filter cartridge and the second filter cartridge, the impurities in the waste liquid can be filtered through the first filter membrane and the second filter membrane arranged on the hollow plate. The first filter membrane and the second filter membrane can be quickly replaced by opening the docking cover, thereby improving the replacement efficiency and being more convenient to use. The method and device for preparing glucose from starch processing wastewater, when the starch waste liquid enters the interior of the mixing barrel, it is filtered through a filter element, and materials can be added through a feed pipe, and a driving block is started to drive a stirring rod to rotate, so that it is convenient to mix it evenly with the starch waste water inside, thereby improving process efficiency, and when the stirring rod rotates, it synchronously drives a connecting rod to rotate, at this time, a scraper at one end of the connecting rod rotates inside a discharge trough, and when the other end of the connecting rod rotates to a convex block, the filter plate vibrates up and down with the cooperation of a spring, thereby further improving the efficiency of waste liquid filtration, and at the same time, particles during vibration slide into the interior of the discharge trough, and are conveniently gathered together by the rotation of the scraper, so as to facilitate processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the mixing cylinder of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the mixing cylinder of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the mixing cylinder of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the mixing barrel of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the support of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the auxiliary rod of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the filter plate of the present invention; Figure 8 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0019] Among them, 1. mixing cylinder; 2. liquid inlet pipe; 3. adjusting disk; 4. support; 5. pillar; 6. first filter cartridge; 7. second filter cartridge; 8. heating plate; 9. stirring rod; 10. connecting rod; 11. scraper; 12. filter plate; 13. baffle; 14. spring one; 15. discharge trough; 16. bump; 17. docking cover; 18. first filter membrane; 19. discharge pipe; 20. valve; 21. water ring vacuum pump; 22. elbow one; 23. elbow two; 24. electric telescopic rod; 25. docking tube; 26. auxiliary pipe; 27. auxiliary rod; 28. motor; 29. ​​gear rod; 30. pressure column; 31. spring two; 32. pressure sensor; 33. sealing cover; 34. feed pipe; 35. tooth pattern; 36. water pump; 37. T-tube; 38. vertical pipe; 39. second filter membrane. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] A method for preparing glucose from starch processing wastewater, comprising the following steps: (1) filtering the starch wastewater through a 20 μm filter, adding Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis to the filtered wastewater, stirring and heating at 40° C. for 1 hour to obtain a first fermentation liquid; (2) Then add nano Na to the first fermentation broth 2 CO 3 After stirring evenly, heat at 100°C for 30 minutes to sterilize and inactivate enzymes, and then use a vacuum device to filter the fermentation liquid through a 50nm filter at 100Pa; (3) Adding Bacillus cyclosporus and Xerosaccharomyces bisporus to the filtrate in step (2), stirring and heating at 35° C. for 0.5 h, to obtain a second fermentation liquid; (4) Add nano Na to the second fermentation broth 2 CO 3 After stirring evenly, heat at 200°C for 20 minutes, use a vacuum device at 100 Pa to filter the fermentation liquid through a 1 nm filter, dry the filtrate, and grind it into powder to obtain glucose powder. 2 CO 3 The particle size is 8-9nm.

[0022] The wastewater filtered in the step (1) is mixed with Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis to form powder, and the mass volume ratio of the wastewater filtered to Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis is 50ml::1mg:0.5mg:2mg.

[0023] In the step (3), the Bacillus cyclosporus and Xerosporus bisporus are bacterial powders, and the mass volume ratio of the filtrate to the Bacillus cyclosporus and Xerosporus bisporus is: 30 ml: 2 mg: 0.5 mg.

[0024] In step (2), Na 2 CO 3 The mass volume ratio of the first fermentation liquid is 5mg:50ml; in the step (4), Na 2 CO 3 The mass volume ratio of the second fermentation broth is 2mg:50ml. Example

[0025] A method for preparing glucose from starch processing wastewater, comprising the following steps: (1) filtering the starch wastewater through a 25 μm filter, adding Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis to the filtered wastewater, stirring and heating at 45° C. for 1.5 h, and obtaining a first fermentation liquid; (2) Then add nano Na to the first fermentation broth 2 CO 3 After stirring evenly, heat at 120℃ for 35min to sterilize and inactivate enzymes, and then use a vacuum device to filter the fermentation liquid through a 70nm filter at 120Pa; (3) Adding Bacillus cyclosporus and Xerosaccharomyces bisporus to the filtrate in step (2), stirring and heating at 37° C. for 0.8 h, to obtain a second fermentation liquid; (4) Add nano Na to the second fermentation broth 2 CO 3 After stirring evenly, the mixture was heated at 230°C for 30 min, and the fermentation liquid was filtered through a 4 nm filter screen using a vacuum device at 120 Pa. After the filtrate was dried, it was ground into powder to obtain glucose powder. 2 CO 3 The particle size is 8-9nm.

[0026] The wastewater filtered in the step (1) is mixed with Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis to form powder, and the mass volume ratio of the wastewater filtered to Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis is 60ml::1.5mg:1mg:3mg.

[0027] In the step (3), the Bacillus cyclosporus and Xerosporus bisporus are bacterial powders, and the mass volume ratio of the filtrate to the Bacillus cyclosporus and Xerosporus bisporus is: 35 ml: 3 mg: 0.8 mg.

[0028] In step (2), Na 2 CO 3 The mass volume ratio of the first fermentation liquid is 8mg:80ml; in the step (4), Na 2 CO 3 The mass volume ratio of the second fermentation broth is 3mg:80ml. Example

[0029] A method for preparing glucose from starch processing wastewater, comprising the following steps: (1) filtering the starch wastewater through a 30 μm filter, adding Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis to the filtered wastewater, stirring and heating at 50° C. for 2 h, to obtain a first fermentation liquid; (2) Then add nano Na to the first fermentation broth 2 CO 3 After stirring evenly, heat at 150°C for 40 minutes to sterilize and inactivate enzymes, and then use a vacuum device to filter the fermentation liquid through a 100nm filter at 150Pa; (3) Adding Bacillus cyclosporus and Xerosaccharomyces bisporus to the filtrate in step (2), stirring and heating at 40° C. for 1 h, to obtain a second fermentation liquid; (4) Add nano Na to the second fermentation broth 2 CO 3 After stirring evenly, the mixture was heated at 250°C for 40 min, and the fermentation liquid was filtered through a 5 nm filter at 150 Pa using a vacuum device. After the filtrate was dried, it was ground into powder to obtain glucose powder.

[0030] The wastewater filtered in the step (1) is mixed with Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis to form powder, and the mass volume ratio of the wastewater filtered to Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis is 80ml::2mg:2mg:5mg.

[0031] In the step (3), the Bacillus cyclosporus and Xerosporus bisporus are bacterial powders, and the mass volume ratio of the filtrate to the Bacillus cyclosporus and Xerosporus bisporus is 40 ml:5 mg:1 mg.

[0032] In step (2), Na 2 CO 3 The mass volume ratio of the first fermentation liquid is 10mg:100ml; in the step (4), Na 2 CO 3 The mass volume ratio of the second fermentation liquid is 5mg:100ml. 2 CO 3 The particle size is 8-9nm.

[0033] See also Figures 1 to 8 The present invention provides a preparation device for preparing glucose using starch processing wastewater; it includes a mixing drum 1, a liquid inlet pipe 2, an adjusting disk 3 and a support 4, the liquid inlet pipe 2 is fixedly connected to the top of the mixing drum 1, the support 5 is arranged at the bottom of the mixing drum 1 in a clamping manner, the adjusting disk 3 is fixedly connected to the surface of the support 5, the support 4 is fixedly connected to the bottom of the support 5, and a fixing hole is opened on the upper surface of the support 4, which is convenient for fixing it to a position where it needs to be used by bolts to maintain the stability of the equipment.

[0034] like Figure 1As shown, the liquid inlet pipe 2 is Y-shaped and arranged at the top of the mixing barrel 1, and is connected to the mixing barrel 1, so as to be conveniently connected to the external waste liquid pipeline, so that the starch waste liquid enters the interior of the mixing barrel 1. An insulation layer is provided on the inner wall of the mixing barrel 1, which can reduce the loss of internal heat and improve the heating efficiency when it is convenient to heat again.

[0035] The mixing barrel 1 comprises a driving block arranged in the top plate, a stirring member arranged at the output end of the driving block, a filter member arranged on the surface of the stirring member and used in conjunction with the stirring member, a heating plate 8 arranged on the inner bottom wall of the mixing barrel 1, a detachably connected sealing cover 33 arranged on the outer wall of the mixing barrel 1, and a feeding pipe 34 arranged on the outer wall of the mixing barrel 1; When the feed pipe 34 is opened, materials can be added therein, and the driving member drives the stirring member to rotate, so as to facilitate uniform mixing of the waste liquid and materials therein, thereby improving the efficiency of the process.

[0036] The upper surface of the regulating disk 3 is provided with a first filter cartridge 6 and a second filter cartridge 7, a vacuum assembly is provided on the horizontal plate of the outer wall of the mixing cylinder 1, and the output end of the vacuum assembly cooperates with the first filter cartridge 6 and the second filter cartridge 7 to filter impurities in the wastewater, a liquid pumping assembly is provided inside the support 4, and the liquid inlet end of the liquid pumping assembly is connected to the first filter cartridge 6, and the liquid outlet end is connected to the mixing cylinder 1 through the support 5; like Figure 3 As shown, a ball (shown in the figure) is provided at the edge of the top end of the support 5 which contacts the inner wall of the mixing barrel 1. The purpose of such arrangement is to reduce the resistance during rotation and reduce the energy consumption.

[0037] like Figure 1 and Figure 2 As shown, there are two first filter cartridges 6 and two second filter cartridges 7, which are equidistantly arranged on the surface of the adjustment disk 3, so as to facilitate and quickly process the impurities in the starch wastewater; the wastewater filtered by the first filter cartridge 6 can be pumped into the interior of the mixing cylinder 1 again through the pumping component, and connected to the second filter cartridge 7 through the vacuum component, so as to facilitate improving the filtering effect of the wastewater.

[0038] A placement plate is fixedly connected to the bottom of the outer wall of the mixing barrel 1, and a driving member used in conjunction with the adjusting disk 3 is provided at one end of the placement plate along the first direction, which is used to drive the mixing barrel 1 to rotate. A pressure component is provided inside the adjusting disk 3, and a control module used in conjunction with the vacuum component, the pressure component and the driving member is provided at the bottom of the outer wall of the mixing barrel 1, and they are electrically connected to each other.

[0039] The stirring element includes a stirring rod 9 fixedly connected to the output end of the driving block, a connecting rod 10 arranged on the surface of the stirring rod 9, and a scraper 11 arranged at the end of the connecting rod 10 away from the stirring rod 9; the filter element includes a filter plate 12 arranged in the mixing barrel 1 and sleeved on the surface of the stirring rod 9, a baffle 13 fixedly connected to the inner wall of the mixing barrel 1 and abutting against the bottom buckle plate of the filter plate 12, and a spring 14 fixedly connected to the upper surface of the baffle 13; The top end of the spring 14 is fixedly connected to the inner top wall of the buckle plate, a discharge groove 15 is provided inside the mixing barrel 1, the scraper 11 is arranged inside the discharge groove 15, and a protrusion 16 is fixedly connected to the upper surface of the filter plate 12, near the other end of the connecting rod 10.

[0040] like Figure 2 and Figure 3 As shown, a limited hole is provided on the placement plate of the outer wall of the mixing cylinder 1 for placing the measuring cylinder, and the interior of the measuring cylinder is used to place Bacillus coagulans, Bacillus amyloliquefaciens, Candida utilis and Na 2 CO 3 , easy to take and use, the filter plate 12 uses a 20-30μm filter screen for filtering; Starting the driving block (with an electric motor as the power source) can drive the stirring rod 9 and the connecting rod 10 to rotate, and the waste starch and waste water inside and the added fungi can be evenly mixed through the stirring rod 9; When the stirring rod 9 rotates, the scraper 11 at one end of the connecting rod 10 rotates inside the discharge trough 15, and the other end of the connecting rod 10 squeezes the protrusion 16 when it contacts it. At this time, the filter plate 12 moves downward under the action of the spring 14, and when it does not contact the protrusion 16, the filter plate 12 automatically resets, and this cycle is repeated. When the wastewater passes through the filter plate 12, the filtration efficiency of the wastewater is improved, and the clogging of the filter plate 12 by impurities in the wastewater can be reduced. At the same time, the filter plate 12 is vibrated up and down to automatically collect the impurities into the discharge trough 15. Through the rotation of the scraper 11, the collected impurities are conveniently concentrated at the sealing cover 33, and then the sealing cover 33 is opened for processing.

[0041] The liquid pumping assembly includes a water pump 36 disposed inside the support 5 , a T-shaped pipe 37 disposed at the liquid inlet end of the water pump 36 and connected to the first filter cartridge 6 , and a vertical pipe 38 disposed at the liquid outlet end of the water pump 36 and connected to the mixing cartridge 1 .

[0042] The upper surfaces of the first filter cartridge 6 and the second filter cartridge 7 are threadedly connected with a docking cover 17, the interior and inlet ends of the first filter cartridge 6 and the second filter cartridge 7 are fixedly connected with a hollow plate, a first filter membrane 18 is placed on the upper surfaces of the first filter cartridge 6 and the hollow plate, a second filter membrane 39 is provided on the upper surfaces of the second filter cartridge 7 and the hollow plate, a discharge pipe 19 is provided at the bottom of the second filter cartridge 7, and a valve 20 is provided on the surface of the discharge pipe 19.

[0043] like Figure 3 and Figure 5 As shown, both ends of the T-tube 37 pass through the pillar (5) and extend to the interior of the first filter cartridge 6, and the top end of the vertical pipe 38 extends along the pillar 5 to the interior of the mixing cartridge 1; an electromagnetic valve (shown in the figure) is provided at one end of the vertical pipe 38 close to the mixing cartridge 1 and at a position of the T-tube 37 close to the water pump 36. Since there are two first filter cartridges 6, when the electromagnetic valves at points a and c are conducting, the electromagnetic valve at point b is in a non-conducting state; and when the electromagnetic valves at points b and c are conducting, the electromagnetic valve at point a is in a non-conducting state; this facilitates switching of the desired filter cartridge; When the liquid is discharged into the interior of the second filter cartridge 7 through the vacuum assembly, the valve 20 at the bottom thereof can be opened to allow the liquid to be discharged from the discharge pipe 19 for easy collection; By arranging the first filter membrane 18 and the second filter membrane 39 in the first filter cartridge 6 and the second filter cartridge 7, it is convenient to filter the wastewater and to quickly replace them; The first filter membrane 18 uses a 50-100 nm filter screen for filtration, and the second filter membrane 39 uses a 1-5 nm filter screen for filtration. The water ring vacuum pump 21 is started. When the first filter membrane 18 and the second filter membrane 39 are used for filtration, the fermentation liquid is filtered from the filter membrane at a pressure of 100-150 Pa.

[0044] The vacuum assembly includes a water ring vacuum pump 21 arranged on the horizontal plate of the outer wall of the mixing cylinder 1, a bend pipe 1 22 arranged at the liquid inlet end of the water ring vacuum pump 21, and a bend pipe 23 fixedly connected to the liquid outlet end of the water ring vacuum pump 21. An electric telescopic rod 24 is fixedly connected to the bottom of the horizontal plate of the outer wall of the mixing cylinder 1, and the output end of the electric telescopic rod 24 is fixedly connected to the butt joint 25. The other end of the bend pipe 23 is fixedly connected to an auxiliary pipe 26, and the bottom end of the auxiliary pipe 26 is fixedly connected to the surface of the butt joint 25. The bottom end of the butt joint 25 is used in conjunction with the docking cover 17.

[0045] like Figure 3 As shown, when the starch wastewater inside the mixing cylinder 1 is treated to obtain fermentation liquid, the water ring vacuum pump 21 (the specification adopts 2BV series) is started, and the fermentation liquid inside enters the inside of the elbow 1 22, passes through the elbow 2 23 and the auxiliary pipe 26, and is discharged to the inside of the first filter cylinder 6; Starting the electric telescopic rod 24 can drive the docking tube 25 at its bottom end to buckle with the docking cover 17, and at the same time facilitate switching to dock with the second filter cartridge 7. Sealing gaskets are provided on the outer wall of the top opening of the docking cover 17 and the edge of the bottom outlet of the docking tube 25, which can increase the sealing performance when the docking cover 17 is connected to the docking tube 25 and reduce liquid leakage.

[0046] The driving member includes an auxiliary rod 27 fixedly connected to the placement plate and away from one end of the mixing barrel 1, a motor 28 arranged inside the auxiliary rod 27, and a gear rod 29 arranged at the output end of the motor 28. The bottom end of the auxiliary rod 27 is clamped on the edge of the adjusting disk 3, and the side of the edge of the adjusting disk 3 is provided with a tooth pattern 35. The bottom end of the gear rod 29 is meshed and connected with the tooth pattern 35.

[0047] The pressure assembly includes a pressure column 30 inserted into the edge of the adjustment disk 3, a spring 31 arranged on the surface of one end of the pressure column 30 that penetrates into the adjustment disk 3, and a pressure sensor 32 arranged inside the adjustment disk 3 and below the pressure column 30. The pressure assembly is used in conjunction with the bottom end of the auxiliary rod 27.

[0048] like Figure 5 and Figure 6 As shown, the motor 28 is started to drive the gear rod 29 to rotate. Since the bottom end of the gear rod 29 is meshed with the tooth pattern 35 on the surface of the adjustment plate 3, the gear rod 29 rotates along the edge of the adjustment plate 3, and the vacuum assembly on the surface of the mixing cylinder 1 is synchronously driven to rotate, so that the first filter cartridge 6 is conveniently switched to the position of the second filter cartridge 7. In order to reduce manual operation, the auxiliary rod 27 rotates along the edge of the adjusting disk 3. When the bottom end of the auxiliary rod 27 is squeezed to the top of the pressure column 30, with the cooperation of the spring 2 31, the bottom end of the pressure column 30 squeezes the pressure sensor 32. When the threshold set by the pressure sensor 32 is reached, the control module controls the motor 28 to stop. At this time, the docking tube 25 at the bottom of the electric telescopic rod 24 is just above the docking cover 17. The control module controls the output end of the electric telescopic rod 24 to move downward, so that the docking tube 25 is connected to the docking cover 17, reducing the manual replacement of the position from the first filter cartridge 6 to the second filter cartridge 7 and improving the efficiency of the process.

[0049] The electrical components appearing in this article are all electrically connected to an external main controller and a 220V AC power supply, and the main controller can be a conventional known device such as a computer for control, and the motor 28, electric telescopic rod 24, water ring vacuum pump 21, pressure sensor 32 and water pump 36 mentioned above are all existing well-known technologies, which are only cited here, and the specific structure is not described in detail.

[0050] In the present invention, the working steps of the device are as follows: S1. When in use, the starch wastewater is discharged into the interior of the mixing drum 1 through the liquid inlet pipe 2, filtered through the filter plate 12, and the driving block is started at the same time. Under the cooperation of the driving member and the filter member, the impurities in the starch wastewater are quickly filtered and collected. At this time, the filtered starch wastewater is collected in the lower space of the mixing drum 1, and Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis are added through the feed pipe 34; the mass volume ratio of the filtered wastewater to Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis is 80ml:: 2mg: 2mg: 5mg; the enzyme hydrolysis method is used to determine that each liter of wastewater contains an average of about 40-50mg of starch.

[0051] S2, the heating plate 8 is powered on to heat the starch wastewater, the temperature of the heating plate 8 is 50°C, and the stirring rod 9 is used to stir and heat for 2 hours, thereby obtaining the first fermentation liquid; S3, then, add Na to the interior of the mixing cylinder 1 2 CO 3 After stirring evenly, the temperature of the heating plate 8 is raised to 150°C and heated for 40 minutes to sterilize and inactivate enzymes. Subsequently, the fermentation liquid is allowed to enter the interior of the first filter cartridge 6 at 150 Pa through the vacuum component. After being filtered by the first filter membrane 18, the fermentation liquid flows to the interior of the first filter cartridge 6. Subsequently, the water pump 36 is started to pump the fermentation liquid inside the first filter cartridge 6 to the interior of the mixing cylinder 1 again. S4. Further, Bacillus cyclosporus and Xerosaccharomyces bisporus are added to the mixing tube 1 in step 3 again, and the mixture is heated at 40° C. with stirring for 1 hour to obtain a second fermentation liquid; Bacillus cyclosporus and Xerosporus bisporus are bacterial powders, and the mass volume ratio of the filtrate (the filtrate in step 3) to Bacillus cyclosporus and Xerosporus bisporus is: 40ml: 5mg: 1mg; S5. Further, Na is added to the fermentation broth in step 4. 2 CO 3 After being stirred evenly, it is heated at 250°C for 40 minutes, and then the driving part is started to move the butt joint pipe 25 to the top of the second filter cartridge 7, and the electric telescopic rod 24 is started to drive the butt joint pipe 25 to connect with the butt joint cover 17, and the fermentation liquid is filtered from the second filter membrane 39 at 150 Pa, and the filtered liquid is collected from the discharge pipe 19 by opening the valve 20, and the filtrate is dried and ground into powder to obtain glucose powder, thereby completing the production of glucose; S6, Na in step 3 2 CO 3 The mass volume ratio of the first fermentation liquid is 10mg: 100ml; the Na 2 CO 3 The mass volume ratio of the second fermentation broth is 5mg:100ml.

[0052] According to tests, the above device and method can extract 35-38 mg of glucose from every liter of wastewater, and can efficiently produce glucose.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing glucose from starch processing wastewater, characterized in that: The method comprises the following steps: (1) filtering the starch wastewater through a 20-30 μm filter, adding Bacillus coagulans, Bacillus amyloliquefaciens, and Candida utilis to the filtered wastewater, stirring and heating at 40-50° C. for 1-2 hours, and obtaining a first fermentation liquid; (2) Then add nano-Na2CO3 to the first fermentation liquid and stir evenly, heat at 100-150°C for 30-40 minutes to sterilize and inactivate the enzyme, and then use a vacuum device to filter the fermentation liquid through a 50-100 nm filter at 100-150 Pa; (3) Adding Bacillus cyclosporus and Xerosporus bisporus to the filtrate in step (2), stirring and heating at 35-40° C. for 0.5-1 h to obtain a second fermentation liquid; (4) Adding nano-Na2CO3 to the second fermentation liquid and stirring evenly, heating at 200-250°C for 20-40 min, filtering the fermentation liquid through a 1-5 nm filter screen at 100-150 Pa using a vacuum device, drying the filtrate, and grinding it into powder to obtain glucose powder.

2. The method for preparing glucose from starch processing wastewater according to claim 1, characterized in that: The wastewater filtered in the step (1) is mixed with Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis to form powder, and the mass volume ratio of the wastewater filtered to Bacillus coagulans, Bacillus amyloliquefaciens and Candida utilis is 50-80 ml: 1-2 mg: 0.5-2 mg: 2-5 mg.

3. The method for preparing glucose from starch processing wastewater according to claim 1, characterized in that: In the step (3), the Bacillus cyclosporus and Xerocyprodeum bisporus are bacterial powders, and the mass volume ratio of the filtrate to the Bacillus cyclosporus and Xerocyprodeum bisporus is: 30-40 ml: 2-5 mg: 0.5-1 mg.

4. The method for preparing glucose from starch processing wastewater according to claim 1, characterized in that: In the step (2), the mass volume ratio of Na2CO3 to the first fermentation liquid is 5-10 mg:50-100 ml; in the step (4), the mass volume ratio of Na2CO3 to the second fermentation liquid is 2-5 mg:50-100 ml.

5. A device for preparing glucose from starch processing wastewater, according to the method for preparing glucose from starch processing wastewater according to any one of claims 1 to 4, characterized in that: The mixing cylinder (1) comprises a mixing cylinder (1), a liquid inlet pipe (2), an adjusting disk (3) and a support (4), wherein the liquid inlet pipe (2) is fixedly connected to the top of the mixing cylinder (1), a support (5) is provided at the bottom of the mixing cylinder (1), the adjusting disk (3) is fixedly connected to the surface of the support (5), and the support (4) is fixedly connected to the bottom of the support (5); The mixing barrel (1) comprises a driving block arranged in the top plate, a stirring member arranged at the output end of the driving block, a filtering member arranged on the surface of the stirring member and used in conjunction with the stirring member, a heating plate (8) arranged on the inner bottom wall of the mixing barrel (1), a detachably connected sealing cover (33) arranged on the outer wall of the mixing barrel (1), and a feeding pipe (34) arranged on the outer wall of the mixing barrel (1); The upper surface of the regulating disk (3) is provided with a first filter cartridge (6) and a second filter cartridge (7); a vacuum assembly is provided on a transverse plate on the outer wall of the mixing cartridge (1); and an output end of the vacuum assembly cooperates with the first filter cartridge (6) and the second filter cartridge (7) to filter impurities in the wastewater; a liquid extraction assembly is provided inside the support (4); and a liquid inlet end of the liquid extraction assembly is connected to the first filter cartridge (6), and a liquid outlet end is connected to the mixing cartridge (1) via a support (5); A placement plate is fixedly connected to the bottom of the outer wall of the mixing cylinder (1), and a driving member used in conjunction with the adjustment disk (3) is provided at one end of the placement plate along the first direction, and is used to drive the mixing cylinder (1) to rotate. A pressure component is provided inside the adjustment disk (3), and a control module used in conjunction with the vacuum component, the pressure component and the driving member is provided at the bottom of the outer wall of the mixing cylinder (1), and the control modules are electrically connected to each other.

6. The device for preparing glucose from starch processing wastewater according to claim 5, characterized in that: The stirring member comprises a stirring rod (9) fixedly connected to the output end of the driving block, a connecting rod (10) arranged on the surface of the stirring rod (9), and a scraper (11) arranged at an end of the connecting rod (10) away from the stirring rod (9); The filter element comprises a filter plate (12) disposed in the mixing barrel (1) and sleeved on the surface of the stirring rod (9), a baffle plate (13) fixedly connected to the inner wall of the mixing barrel (1) and abutting against a bottom buckle plate of the filter plate (12), and a spring (14) fixedly connected to the upper surface of the baffle plate (13), wherein the top end of the spring (14) is fixedly connected to the inner top wall of the buckle plate.

7. The device for preparing glucose from starch processing wastewater according to claim 6, characterized in that: A discharge trough (15) is provided inside the mixing cylinder (1), the scraper (11) is arranged inside the discharge trough (15), and a protrusion (16) is fixedly connected to the upper surface of the filter plate (12) and the other end close to the connecting rod (10); The liquid pumping assembly comprises a water pump (36) disposed inside the support column (5), a T-shaped pipe (37) disposed at the liquid inlet end of the water pump (36) and connected to the first filter cartridge (6), and a vertical pipe (38) disposed at the liquid outlet end of the water pump (36) and connected to the mixing cartridge (1).

8. The device for preparing glucose from starch processing wastewater according to claim 7, characterized in that: A docking cover (17) is threadedly connected to the upper surfaces of the first filter cartridge (6) and the second filter cartridge (7); a hollow plate is fixedly connected to the interior and inlet ends of the first filter cartridge (6) and the second filter cartridge (7); a first filter membrane (18) is placed on the upper surfaces of the first filter cartridge (6) and the hollow plate; a second filter membrane (39) is provided on the upper surfaces of the second filter cartridge (7) and the hollow plate; a discharge pipe (19) is provided at the bottom of the second filter cartridge (7), and a valve (20) is provided on the surface of the discharge pipe (19).

9. The device for preparing glucose from starch processing wastewater according to claim 8, characterized in that: The vacuum assembly comprises a water ring vacuum pump (21) arranged on a horizontal plate on the outer wall of a mixing cylinder (1), a first curved pipe (22) arranged on a liquid inlet end of the water ring vacuum pump (21), and a second curved pipe (23) fixedly connected to a liquid outlet end of the water ring vacuum pump (21); an electric telescopic rod (24) is fixedly connected to the bottom of the horizontal plate on the outer wall of the mixing cylinder (1); the output end of the electric telescopic rod (24) is fixedly connected to a butt joint pipe (25); the other end of the second curved pipe (23) is fixedly connected to an auxiliary pipe (26); the bottom end of the auxiliary pipe (26) is fixedly connected to the surface of the butt joint pipe (25); and the bottom end of the butt joint pipe (25) cooperates with a butt joint cover (17) for use.

10. The device for preparing glucose from starch processing wastewater according to claim 9, characterized in that: The driving member comprises an auxiliary rod (27) fixedly connected to the placement plate and away from one end of the mixing barrel (1), a motor (28) arranged inside the auxiliary rod (27), and a gear rod (29) arranged at the output end of the motor (28), the bottom end of the auxiliary rod (27) being clamped on the edge of the adjustment disk (3), the side surface of the edge of the adjustment disk (3) being provided with tooth patterns (35), and the bottom end of the gear rod (29) being meshedly connected with the tooth patterns (35); The pressure assembly comprises a pressure column (30) inserted into the edge of the adjustment disk (3), a second spring (31) arranged on the surface of one end of the pressure column (30) and extending deep into the adjustment disk (3), and a pressure sensor (32) arranged inside the adjustment disk (3) and below the pressure column (30). The pressure assembly is used in conjunction with the bottom end of the auxiliary rod (27).

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