Production method for preparing starch sugar
A production method and technology of starch sugar, applied in the field of deep processing of grain, can solve the problems of ineffective treatment of production wastewater and achieve the effect of promoting nitrification and denitrification, uniform distribution, and reducing sludge production
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Embodiment 1
[0026] A kind of production method preparing starch sugar, it comprises the steps:
[0027] 1) Soak the corn in an aqueous solution of sulfurous acid with a pH value of 3.58 for 40 hours, then filter, separate the corn and waste liquid A, crush the corn, remove the germ, finely grind, remove the corn husk, and dry to obtain corn starch;
[0028] 2) Add twice the weight of water to the cornstarch, stir well, adjust the pH to 6.0, add high temperature resistant α-amylase, the dosage is 50U / g starch, keep warm at 110°C for 10min, then lower the temperature to 90°C, and keep it for 2h , to obtain the enzymatic solution;
[0029] 3) Adjustment step 2) The pH of the enzymolysis solution is 5.0, and the temperature is controlled at 55°C, then add glucoamylase and pullulanase at the same time, the dosage of glucoamylase is 200U / g starch, and the dosage of pullulanase is 0.2U / g Starch, enzymatically hydrolyzed for 50 hours, to obtain sugar liquid; plate and frame filter press to filte...
Embodiment 2
[0038] A kind of production method preparing starch sugar, it comprises the steps:
[0039] 1) Soak the corn in an aqueous solution of sulfurous acid with a pH value of 3.8 for 40 hours, then filter, separate the corn and waste liquid A, crush the corn, remove the germ, finely grind, remove the corn hulls, and dry to obtain corn starch;
[0040] 2) Add twice the weight of water to the cornstarch, stir well, adjust the pH to 6.0, add high temperature resistant α-amylase, the dosage is 50U / g starch, keep warm at 110°C for 10min, then lower the temperature to 90°C, and keep it for 2h , to obtain the enzymatic solution;
[0041] 3) Adjust the pH of the enzymolysis solution to 5.0, control the temperature at 55°C, then add glucoamylase and pullulanase at the same time, the dosage of glucoamylase is 200U / g starch, the dosage of pullulanase is 0.2U / g starch, enzyme The solution time is 50 hours to obtain the sugar solution; the plate and frame filter press filters to remove the enzy...
Embodiment 3
[0050] The sewage treatment test of starch sugar waste liquid of the present invention:
[0051] Control group 1: use diatomaceous earth carrier; the type of microorganisms is the same as the test group; treatment method: after three days of continuous dosing, 5g / m3 per day, and then stand for six days, the detection and treatment results are shown in Table 1.
[0052] Control group 2: The carrier is the same as in Example 2, the difference is that only four kinds of bacteria are added, but no algae is added; treatment method: add 5g / cubic meter on the first day, and then let it stand for six days. See the test results in Table 1.
[0053] Test group: according to the process of Example 2 of the present invention.
[0054] Table 1
[0055] index Before treatment (mg / L) After treatment (control group 1) (mg / L) After treatment (control group 2) (mg / L) After treatment (test group) (mg / L) COD 3215 39.2 81.9 7.7 SS 573 28.2 ...
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