Co-production process for clean production of corn starch and cyclic utilization of wastewater

Abstract

The invention relates to the technical field of green food production, in particular to a corn starch clean production and wastewater recycling co-production process which comprises corn pretreatment, enzymolysis saccharification, membrane electric separation, wastewater stage treatment and resource recovery. Carrying out pulsed electric field assisted acid leaching on the corn, and adding a nano TiO2-enzyme composite catalyst; low-temperature-resistant glucamylase is used for low-temperature enzymolysis; filtering the saccharified liquid through a polyvinylidene fluoride-graphene composite membrane and separating the saccharified liquid through an electrically driven membrane; wastewater is subjected to magnetic MOF material adsorption and electrochemical catalytic oxidation; the treated wastewater is subjected to multiple-effect evaporation-freezing crystallization to recover ammonium sulfate, and condensate water is recycled. The process improves the starch extraction rate and the glucose purity, efficiently treats wastewater, is low in water consumption and high in resource recovery rate, reduces energy consumption and cost, realizes clean production and wastewater recycling, and has remarkable economic and environment-friendly benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of green food production, in particular to a combined production process of clean production of corn starch and recycling of wastewater. BACKGROUND

[0002] In the production process of corn starch, the traditional process faces the dual challenges of resource waste and environmental pollution. In the corn pretreatment stage, the conventional acid leaching method requires long-term soaking at high temperature, and the starch particle wall breaking efficiency is low, resulting in an extraction rate of less than 75% and high energy consumption. In the enzymatic saccharification process, the traditional process uses normal temperature enzyme preparation, and the enzymatic hydrolysis time is long, and the glucose yield can only reach about 90%, while a large amount of wastewater containing high concentration of organic matter and sulfate is produced, and the COD value is usually more than 1000 mg / L, which will cause water pollution if directly discharged.

[0003] Existing wastewater treatment technologies cannot meet the recycling needs. The membrane separation process cannot completely remove organic matter and heavy metals in wastewater, and the treated water quality cannot be used for production processes; the traditional coagulation sedimentation method has high reagent consumption, high sludge production, high operation cost, and almost zero resource recovery rate. In addition, the water consumption of corn starch production is high, and the water consumption of traditional process is more than 5 cubic meters per ton of starch, which is a serious waste of water resources and does not meet the requirements of clean production.

[0004] With the improvement of environmental protection standards, it is urgent to develop an efficient and low-consumption corn starch production process. New technologies such as pulse electric field and membrane integration have been applied to some links, but there is a lack of systematic combined process design, which cannot realize the whole process optimization from raw material pretreatment to wastewater recycling, and it is urgent to develop an integrated innovative process to improve the production efficiency of starch and the resource level of wastewater. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a combined production process of clean production of corn starch and recycling of wastewater.

[0006] A combined production process of clean production of corn starch and recycling of wastewater, comprising the following steps: S1 corn pretreatment: after removing impurities, the corn is pretreated by pulse electric field assisted acid leaching method in 0.3 to 0.8% dilute sulfuric acid solution, 20 to 30kV / cm pulse electric field is applied, 45 to 55℃ soaking for 6 to 8h, and 0.1 to 0.3% nano TiO2-enzyme composite catalyst is added to promote the wall breaking of starch particles; S2 low-temperature enzymatic saccharification: the soaking liquid is cooled to 35 to 40℃, 0.5 to 1.5% low-temperature glucose amylase is added, the pH is maintained at 5.0 to 5.5, and the enzymatic hydrolysis is carried out for 90 to 120min, and the glucose yield is ≥98%; S3 membrane-electric integrated separation: the saccharification solution is first filtered through a polyvinylidene fluoride-graphene composite membrane, and then ion sieving is performed through an electrically driven membrane assembly to obtain a glucose solution with a purity of ≥99.8%; S4 wastewater grading treatment: the membrane separation wastewater is first adsorbed by a magnetic MOF material, and then electrochemically catalytically oxidized to degrade the insoluble substances, and the COD removal rate is ≥98%; S5 resource closed-loop recovery: the treated wastewater is subjected to multi-effect evaporation-cryogenic crystallization combination to recover ammonium sulfate crystals, and the condensed water is subjected to ultraviolet-ozone combined disinfection and then reused in the S1 process.

[0007] Preferably, CO2 gas is introduced during the pulse electric field treatment in S1 to form a carbonic acid environment to promote the dissolution of corn endosperm and increase the starch extraction rate by 10 to 15%.

[0008] Preferably, the electrically driven membrane assembly in S3 uses a zwitterionic exchange membrane to realize selective separation of glucose and inorganic salts, and the bivalent salt retention rate is ≥99%.

[0009] Preferably, the magnetic MOF material adsorption in S4 is strengthened under an external magnetic field to shorten the adsorption equilibrium time to 15 to 20 min and the adsorption capacity reaches 200 to 250 mg / g.

[0010] Preferably, 0.05 to 0.1% chitosan-sodium alginate composite protective agent is added during the low-temperature enzymatic hydrolysis process in S2 to maintain the enzyme activity at more than 90%, and the enzyme dosage is reduced by 30% compared with the traditional process.

[0011] Preferably, the secondary steam generated by the multi-effect evaporation in S5 is compressed by a heat pump and then used to preheat the corn soaking solution, and the heat energy utilization rate is ≥85%.

[0012] Preferably, 0.1 to 0.3% iron oxalate complex is added during the electrochemical catalytic oxidation in S4 to promote the generation of ·OH free radicals, and the reaction formula is: , Preferably, the corn residue after soaking in S1 is dried by microwave and then fermented with 0.5 to 1% probiotics to produce a dietary fiber product.

[0013] Preferably, the concentrated solution generated by the membrane separation in S3 is extracted by supercritical CO2 to recover proteins as feed additives.

[0014] Preferably, the entire process adopts a digital twin system for real-time regulation and control, temperature, pressure and conductivity are collected through a sensor array, and after AI algorithm optimization, the water consumption is ≤2.0 m³ / t of starch, and the comprehensive energy consumption is reduced by more than 40% compared with the traditional process.

[0015] Compared with the existing technology, the beneficial effects of the present application are: 1.The corn starch clean production and wastewater recycling cogeneration process provided by the present application realizes efficient production and environmental protection win through multi-technology cooperation. The pulse electric field assisted acid leaching method improves the starch extraction rate, which is higher than that of the traditional process, while shortening the soaking time and reducing the energy consumption. The low-temperature enzymatic hydrolysis process uses low-temperature enzyme preparation, and the glucose yield is extremely high at 35 to 40℃, which reduces the enzyme dosage and production cost.

[0016] 2.The membrane-electric integrated separation technology improves the glucose purity, and the divalent salt retention rate is extremely high, while the wastewater COD removal rate is extremely high, and the water quality after treatment meets the production recycled water standard, and the water consumption is lower than that of the traditional process. The wastewater grading treatment and resource recovery process realizes extremely high ammonium sulfate recovery rate and extremely high condensate water recycling rate, forming a closed loop of "production-wastewater-resource".

[0017] 3.The process uses digital twin system for real-time regulation and control, optimizes parameters through AI algorithm, reduces comprehensive energy consumption and reagent cost compared with the traditional process, and avoids environmental protection risk of direct wastewater discharge. The process comprehensively improves the economy and environmental friendliness of corn starch production, and provides a popular technical solution for green manufacturing in the starch industry. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a corn starch clean production and wastewater recycling cogeneration process flowchart proposed by the present application; Fig. 2 is a comparative bar chart of starch extraction rate and glucose yield of the examples and comparative examples; Fig. 3 is a comparative line chart of glucose purity and wastewater COD removal rate of the examples and comparative examples; Fig. 4 is a comparative bar line chart of water consumption and ammonium sulfate recovery rate of the examples and comparative examples. DETAILED DESCRIPTION

[0019] According to Figs. 1 to 4 , the specific embodiments of the present application are as follows: Example 1: standard parameter cogeneration process S1 corn pretreatment Take 100 kg of corn, remove impurities through a vibrating screen (screen hole 2 mm), and adsorb iron filings with a magnetic separator. Prepare 500 L of 0.5% dilute sulfuric acid solution, pour it into the soaking tank, and add 0.2% nano TiO2-starch enzyme composite catalyst (TiO2 and starch enzyme mass ratio 1:3, TiO2 particle size 20 nm), and stir to dissolve. After putting in the corn, seal it, apply a 25 kV / cm pulse electric field (pulse width 20 μs, frequency 50 Hz), and pass in CO2 (flow rate 0.5 L / min), and maintain 50℃ soaking for 7 h.

[0020] S2 low-temperature enzymatic saccharification The soaking solution was transferred to an enzymatic hydrolysis tank, cooled to 38°C, and the pH was adjusted to 5.2 with 10% sodium carbonate. 1.0% cold-resistant glucoamylase (enzyme activity 10,000 U / g) and 0.08% chitosan-sodium alginate composite protective agent (mass ratio 1:1) were added, and the enzymatic hydrolysis was carried out at 150 rpm for 100 min.

[0021] S3 Membrane-Electrically Integrated Separation The enzymatic hydrolyzate was filtered through a plate-and-frame filter (10μm pore size), and the clear solution was pumped through a polyvinylidene fluoride-graphene composite membrane assembly (0.1μm pore size, 5% graphene doping) and filtered at 0.2MPa and 40°C. The permeate then entered an electrically driven membrane assembly (amphoteric ion exchange membrane, cation exchange capacity 2.0mmol / g, anion exchange capacity 1.8mmol / g), where a voltage of 15V and a current density of 20mA / cm² were applied to yield a glucose solution (99.85% purity).

[0022] S4 wastewater classification treatment Membrane separation wastewater (COD 8000 mg / L) was pumped into an adsorption tank, where 0.2% magnetic MOF material (Fe3O4@ZIF-8, 50 nm particle size) was added. A 0.3 T external magnetic field was applied, and adsorption was carried out at 200 rpm for 18 minutes. After adsorption, the wastewater was fed into an electrochemical oxidation tank, where 0.2% ferric oxalate complex was added. Electrolysis was performed at 20 V using a 300W UV lamp for 60 minutes, reducing the COD to 150 mg / L.

[0023] S5 closed-loop resource recycling The treated wastewater is fed into a triple-effect evaporator (100°C for the first effect, 80°C for the second effect, and 60°C for the third effect) where it is concentrated to 30% solids content. It is then transferred to a -5°C cryo-crystallizer (50 rpm) to precipitate ammonium sulfate crystals (99.5% purity, 8.2 kg yield). The secondary steam is compressed by a heat pump (raising the temperature to 110°C) to preheat the dilute sulfuric acid in S1. The condensed water is disinfected with UV-ozone (20 mW / cm², 5 mg / L ozone, 30 minutes) before being reused in S1.

[0024] S6 By-product Treatment Corn residue (60% moisture content) was microwave-dried at 800W (60°C, 30 minutes) to a moisture content of 10%. 0.8% probiotics (lactic acid bacteria: yeast = 1:1) were added and fermented at 35°C for 48 hours to produce a dietary fiber product (35% soluble fiber). The membrane-separated concentrate was subjected to supercritical CO2 extraction (30 MPa, 40°C, 2 hours) to recover protein (85% purity) for use as a feed additive.

[0025] Process Control The digital twin system collects data through a sensor array and uses AI to optimize parameters, reducing water consumption to 1.8 m³ / t starch and overall energy consumption by 42%.

[0026] Example 2: High extraction rate optimization process S1 Corn pretreatment Take 100 kg of corn, remove impurities through a vibrating screen (screen hole 2 mm), and use a magnetic separator to adsorb iron filings. Prepare 500 L of 0.6% dilute sulfuric acid solution, pour it into the soaking tank, and add 0.3% nano TiO2-amylase composite catalyst (TiO2 to amylase mass ratio 1:3, TiO2 particle size 20 nm), and stir to dissolve. After adding the corn, seal the tank, apply a 30 kV / cm pulse electric field (pulse width 20 μs, frequency 50 Hz), and pass in CO2 (flow rate 0.6 L / min), and maintain a soaking temperature of 55°C for 8 hours.

[0027] S2 Low-temperature enzymatic saccharification Transfer the soaking solution to the enzymatic tank and cool it to 38°C. Adjust the pH to 5.2 with 10% sodium carbonate. Add 1.2% low-temperature resistant glucoamylase (enzyme activity 10000 U / g) and 0.1% chitosan-sodium alginate composite protective agent (mass ratio 1:1). Stir at 150 r / min for 120 min for enzymatic hydrolysis, and the glucose yield is 98.5%.

[0028] S3 Membrane-electricity integrated separation Enzymatic hydrolysate is filtered through a plate and frame filter (filter cloth pore size 10 μm), and the clear liquid is pumped into a polyvinylidene fluoride-graphene composite membrane module (membrane pore size 0.1 μm, graphene doping 5%). The filtration is carried out at 0.25 MPa and 40°C. The permeate enters an electrically driven membrane module (amphiphilic ion exchange membrane, cation exchange capacity 2.0 mmol / g, anion exchange capacity 1.8 mmol / g). An electric voltage of 18 V is applied, and the current density is 25 mA / cm². A glucose solution (purity 99.9%) is obtained.

[0029] S4 Wastewater fractionation treatment The membrane separation wastewater (COD 8000 mg / L) is pumped into an adsorption tank, and 0.3% magnetic MOF material (Fe3O4@ZIF-8, particle size 50 nm) is added. An external magnetic field of 0.4 T is turned on, and the adsorption is stirred at 200 r / min for 20 min (adsorption capacity 250 mg / g). After adsorption, the wastewater is introduced into an electrochemical oxidation tank, and 0.3% iron oxalate complex is added. A 300 W ultraviolet lamp is turned on, and electrolysis is carried out at 20 V for 70 min. The COD removal rate is 98.5%.

[0030] S5 Resource closed-loop recovery The treated wastewater enters a triple-effect evaporator (100°C for the first effect, 80°C for the second effect, and 60°C for the third effect), where it is concentrated to 30% solids content. It is then transferred to a -5°C cryo-crystallizer (50 rpm) to precipitate ammonium sulfate crystals (99.5% purity, 8.5 kg yield). The secondary steam is compressed by a heat pump (raising the temperature to 110°C) to preheat the dilute sulfuric acid in S1. The condensed water is disinfected with UV-ozone (20 mW / cm², 5 mg / L ozone, 30 minutes) and reused in S1.

[0031] S6 By-product Treatment Corn residue (60% moisture content) was microwave-dried at 800W (60°C, 30 minutes) to a moisture content of 10%. 1% probiotics (lactic acid bacteria: yeast = 1:1) were added and fermented at 35°C for 48 hours to produce a dietary fiber product (38% soluble fiber). The membrane-separated concentrate was subjected to supercritical CO2 extraction (30 MPa, 40°C, 2 hours) to recover protein (85% purity) for use as a feed additive.

[0032] Process Control The digital twin system collects data through a sensor array, uses AI to optimize parameters, and enhances the reaction efficiency of key steps, increasing the glucose yield to 98.5% and the resource recycling rate by 3%.

[0033] Example 3: Low energy consumption optimization process S1 corn pretreatment Take 100 kg of corn and pass it through a vibrating screen (2 mm mesh) to remove impurities. Use a magnetic separator to absorb iron filings. Prepare 500 L of 0.3% dilute sulfuric acid solution and pour it into a soaking tank. Add 0.1% nano-TiO2-amylase composite catalyst (TiO2:amylase mass ratio 1:3, TiO2 particle size 20 nm) and stir to dissolve. Add the corn, seal the container, apply a 20 kV / cm pulsed electric field (pulse width 20 μs, frequency 50 Hz), and introduce CO2 (flow rate 0.4 L / min). Maintain the temperature at 45°C and soak for 6 hours.

[0034] S2 low temperature enzymatic saccharification The soaking liquid was transferred to an enzymatic hydrolysis tank, cooled to 38°C, and the pH was adjusted to 5.2 with 10% sodium carbonate. 0.8% cold-resistant glucoamylase (enzyme activity 10,000 U / g) and 0.05% chitosan-sodium alginate composite protective agent (mass ratio 1:1) were added. The enzymatic hydrolysis was carried out with stirring at 150 rpm for 90 minutes, and the glucose yield was 98%.

[0035] S3 Membrane-Electrically Integrated Separation The enzymatic hydrolyzate was filtered through a plate-and-frame filter (10μm pore size), and the clear solution was pumped through a polyvinylidene fluoride-graphene composite membrane assembly (0.1μm pore size, 5% graphene doping) and filtered at 0.15MPa and 40°C. The permeate then entered an electrically driven membrane assembly (amphoteric ion exchange membrane, cation exchange capacity 2.0mmol / g, anion exchange capacity 1.8mmol / g), where a voltage of 12V and a current density of 15mA / cm² were applied to yield a glucose solution (99.8% purity).

[0036] S4 wastewater classification treatment Membrane separation wastewater (COD 8000 mg / L) was pumped into an adsorption tank, where 0.15% magnetic MOF material (Fe3O4@ZIF-8, 50 nm particle size) was added. A 0.2 T external magnetic field was applied, and adsorption was carried out at 200 rpm for 15 minutes. After adsorption, the wastewater was fed into an electrochemical oxidation tank, where 0.1% ferric oxalate complex was added. Electrolysis was performed at 20 V using a 300W UV lamp for 50 minutes, reducing the COD to 180 mg / L.

[0037] S5 closed-loop resource recycling The treated wastewater enters a triple-effect evaporator (100°C for the first effect, 80°C for the second effect, and 60°C for the third effect), where it is concentrated to 30% solids content. It then enters a -5°C cryo-crystallizer (50 rpm) to precipitate ammonium sulfate crystals (99.5% purity, 8.1 kg yield). The secondary steam is compressed by a heat pump (heating to 110°C, power reduction by 10%) to preheat the dilute sulfuric acid in S1, achieving a thermal energy utilization rate of 85%. The condensed water is disinfected with UV-ozone (20 mW / cm², 5 mg / L ozone, 30 minutes) and reused in S1.

[0038] S6 By-product Treatment Corn residue (60% moisture content) was microwave-dried at 800W (60°C, 25 minutes) to a moisture content of 10%. 0.8% probiotics (lactic acid bacteria: yeast = 1:1) were added and fermented at 35°C for 48 hours to produce a dietary fiber product (35% soluble fiber). The membrane-separated concentrate was subjected to supercritical CO2 extraction (30 MPa, 40°C, 2 hours) to recover protein (85% purity) for use as a feed additive.

[0039] Process Control The digital twin system collects data through a sensor array and uses AI to optimize parameters, achieving a water consumption of 1.6 m³ / t starch and a 45% reduction in overall energy consumption, thus achieving a low-energy and high-efficiency production closed loop.

[0040] Comparative example: traditional production process S1 corn pretreatment After corn was cleaned, it was soaked in 0.5% dilute sulfuric acid at 50℃ for 12 hours (without pulse electric field, nanocatalyst, or CO2), and the starch extraction rate was 75%.

[0041] S2 enzymatic saccharification The soaking solution was heated to 60°C, 2.0% of common glucoamylase (without protective agent) was added, and the enzymatic hydrolysis was carried out at 180 r / min for 180 min, the enzyme activity was reduced to 60%, and the glucose yield was 90%.

[0042] S3 separation and purification After plate and frame filtration (filter cloth aperture 20 μm), the glucose purity was 98% after decolorization by ion exchange resin (divalent salt rejection rate 80%).

[0043] S4 wastewater treatment The wastewater was directly discharged into the biochemical tank, and the COD removal rate was 80% (effluent COD 1600 mg / L) after aeration for 48 h without classification treatment.

[0044] S5 resource utilization The wastewater was directly discharged without recycling, and the corn residue was discarded; the water consumption was 5.0 m³ / t of starch, and the energy consumption was 60% higher than that of Example 1.

[0045] The core process indicators of the examples and the comparative examples are compared as follows: Table 1

[0046] Summary: The starch extraction rate (91%-94%), glucose yield (98%-98.5%), glucose purity (99.8%-99.9%), and wastewater COD removal rate (97.8%-98.5%) of Examples 1-3 are all significantly higher than those of the comparative examples, especially the wastewater treatment and starch extraction advantages are obvious, which shows that the process of the examples is more efficient, environmentally friendly, and the product quality is better.

[0047] The resource consumption of the examples and the comparative examples is compared as follows: Table 2 Summary: The water consumption (1.6-1.9 m³ / t of starch) and enzyme dosage (0.8%-1.2%) of Examples 1-3 are much lower than those of the comparative examples (5.0 m³ / t of starch, 2.0%), and the comprehensive energy consumption is reduced by 40%-45%, the ammonium sulfate recovery rate is 94%-96%, while the two items of the comparative examples are 0. The process of the examples is more energy-saving and consumption-reducing, and the resource recycling is better.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A co-production process for clean production of corn starch and recycling of wastewater, characterized in that: The following steps are involved: S1 corn pretreatment: After corn is cleaned, it is subjected to pulsed electric field-assisted acid leaching. The corn is soaked in 0.3 to 0.8% dilute sulfuric acid solution at 45 to 55°C for 6 to 8 hours with a pulsed electric field of 20 to 30 kV / cm. At the same time, 0.1 to 0.3% nano-TiO2-enzyme composite catalyst is added to promote starch granule wall rupture. S2 low-temperature enzymatic saccharification: cool the soaking liquid to 35-40°C, add 0.5-1.5% low-temperature resistant glucose amylase, maintain pH 5.0-5.5, and perform enzymatic hydrolysis for 90-120 minutes, with a glucose yield of ≥98%; S3 membrane-electric integrated separation: The saccharified liquid is first filtered through a polyvinylidene fluoride-graphene composite membrane, and then ion screening is performed through an electrically driven membrane assembly to obtain a glucose solution with a purity of ≥99.8%; S4 wastewater classification treatment: membrane separation wastewater is first adsorbed by magnetic MOF materials to absorb organic matter, and then electrochemical catalytic oxidation is used to degrade insoluble matter, with a COD removal rate of ≥98%; S5 closed-loop resource recovery: The treated wastewater undergoes multi-effect evaporation-freeze crystallization to recover ammonium sulfate crystals, and the condensed water is disinfected by UV-ozone combined disinfection and then reused in the S1 process.

2. The co-production process of corn starch clean production and wastewater recycling according to claim 1, characterized in that: During the pulse electric field treatment in S1, CO2 gas is introduced to form a carbonic acid environment to promote the dissolution of corn endosperm, thereby increasing the starch extraction rate by 10 to 15%.

3. The co-production process for clean production of corn starch and wastewater recycling according to claim 1, characterized in that: The S3 electrically driven membrane assembly uses an amphoteric ion exchange membrane to achieve selective separation of glucose and inorganic salts, with a divalent salt retention rate of ≥99%.

4. The co-production process for clean production of corn starch and wastewater recycling according to claim 1, characterized in that: During adsorption, the S4 magnetic MOF material enhances mass transfer under an external magnetic field, shortens the adsorption equilibrium time to 15 to 20 minutes, and achieves an adsorption capacity of 200 to 250 mg / g.

5. The co-production process of corn starch clean production and wastewater recycling according to claim 1, characterized in that: During the S2 low-temperature enzymatic hydrolysis process, 0.05 to 0.1% chitosan-sodium alginate composite protective agent is added to maintain the enzyme activity above 90%, which reduces the enzyme dosage by 30% compared with the traditional process.

6. The co-production process for clean production of corn starch and wastewater recycling according to claim 1, characterized in that: The secondary steam generated by the S5 multi-effect evaporation is compressed by a heat pump and used to preheat the corn steeping liquid, with a heat energy utilization rate of ≥85%.

7. The co-production process for clean production of corn starch and wastewater recycling according to claim 1, characterized in that: During the electrochemical catalytic oxidation of S4, 0.1 to 0.3% of ferric oxalate complex is added to promote the generation of OH free radicals. The reaction formula is: 。 8. The co-production process for clean production of corn starch and wastewater recycling according to claim 1, characterized in that: The corn residue soaked in S1 is dried by microwave and then fermented with 0.5 to 1% of probiotics to prepare a dietary fiber product.

9. The co-production process for clean production of corn starch and wastewater recycling according to claim 1, characterized in that: The concentrated liquid produced by the S3 membrane separation is extracted by supercritical CO2 to recover the protein as a feed additive.

10. The co-production process of corn starch clean production and wastewater recycling according to claim 1, characterized in that: The entire process uses a digital twin system for real-time control, and temperature, pressure, and conductivity are collected through a sensor array. After AI algorithm optimization, water consumption is ≤2.0m³ / t starch, and the overall energy consumption is reduced by more than 40% compared with traditional processes.

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