A kind of method that utilizes old newsprint to prepare recycled newsprint
A newsprint and re-adding technology, which is applied in the field of papermaking, can solve problems such as environmental pollution and poor quality of newsprint, and achieve the effects of reducing impurity components, improving deinking effect, and reducing environmental pollution
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[0023] The preparation method of deinking bacteria liquid:
[0024] A. According to the mass ratio of 1:5~7, mix paper mill wastewater sludge and sterile water, and stir evenly at 100~200r / min, let it stand for 1~2h, take the supernatant, and In total, take 70~80 parts of water, 10~15 parts of hydroxymethylcellulose sodium, 5~8 parts of ammonium sulfate, 1~2 parts of yeast extract, 1~2 parts of potassium dihydrogen phosphate, 1~2 parts of dihydrogen phosphate Sodium, 0.5~1 part of sodium chloride, 0.2~0.4 part of magnesium sulfate are mixed evenly, and then sterilized at high temperature to obtain a liquid medium. According to the mass ratio of 0.1:20~30, the supernatant and the liquid medium are mixed, and the Shake culture at 28-30°C and 150-180r / min for 2-3 days to obtain culture solution;
[0025] B. In parts by weight, take 70~80 parts of water, 10~15 parts of soluble starch, 5~8 parts of ammonium sulfate, 1~2 parts of yeast extract, 1~2 parts of potassium dihydrogen pho...
Embodiment 1
[0038] The preparation method of deinking bacteria liquid:
[0039] A. According to the mass ratio of 1:5, mix paper mill wastewater sludge and sterile water, and stir evenly at 100r / min, let it stand for 1h, take the supernatant, and take 70 parts of water by weight , 10 parts of sodium hydroxymethyl cellulose, 5 parts of ammonium sulfate, 1 part of yeast extract, 1 part of potassium dihydrogen phosphate, 1 part of disodium hydrogen phosphate, 0.5 parts of sodium chloride, 0.2 parts of magnesium sulfate, mix well, and extinguish at high temperature Bacteria, to obtain a liquid medium, according to the mass ratio of 0.1:20, the supernatant and the liquid medium were mixed, and the temperature was 28°C, 150r / min. Shaking culture was carried out for 2 days to obtain a culture medium;
[0040] B. In parts by weight, take 70 parts of water, 10 parts of soluble starch, 5 parts of ammonium sulfate, 1 part of yeast extract, 1 part of potassium dihydrogen phosphate, 1 part of disodium...
Embodiment 2
[0053] The preparation method of deinking bacteria liquid:
[0054] A. According to the mass ratio of 1:7, mix paper mill wastewater sludge and sterile water, and stir evenly at 200r / min, let it stand for 2 hours, take the supernatant, and take 80 parts of water by weight , 15 parts of sodium hydroxymethyl cellulose, 8 parts of ammonium sulfate, 2 parts of yeast extract, 2 parts of potassium dihydrogen phosphate, 2 parts of disodium hydrogen phosphate, 1 part of sodium chloride, 0.4 parts of magnesium sulfate, mix well, and extinguish at high temperature Bacteria, to obtain a liquid medium, according to the mass ratio of 0.1:30, the supernatant and the liquid medium were mixed, and the temperature was 30°C, 180r / min. Shaking culture was carried out for 3 days to obtain a culture medium;
[0055] B. In parts by weight, take 80 parts of water, 15 parts of soluble starch, 8 parts of ammonium sulfate, 2 parts of yeast extract, 2 parts of potassium dihydrogen phosphate, 2 parts of ...
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