Paper pulping bleaching and waste water purification integration technology
A technology for wastewater purification and pulping, which is applied in pulp bleaching, papermaking, textiles and papermaking, etc., can solve the problems of low investment, high treatment cost and high cost, and achieves reduction of pulp washing water consumption, production cost reduction, and short production process. Effect
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Embodiment 1
[0031] Embodiment 1, an integrated papermaking pulping bleaching and wastewater purification process, the process steps include a papermaking pulping bleaching process section and a wastewater purification process section;
[0032] The pulping and bleaching process section of papermaking includes the following steps:
[0033] 1) Cut the prepared 1000 kg of wheat straw or straw into 3-4cm pieces or shreds for later use;
[0034] 2) According to the liquid-to-material ratio of 5:1, calculate the required amount of water as 5000 kg for standby, then add these amounts of water into the mixing tank and start heating;
[0035] 3) under normal pressure, when the heating temperature reaches 40°C, add papain in the stirring tank, the amount of addition is 0.001umol / L, add pulping bleaching agent NaOH, its consumption is 0.05% based on dry pulp weight, and then Add the above-mentioned spare wheat straw or straw into the mixing tank and start stirring;
[0036] 4) Continue heating, and...
Embodiment 2
[0042] Embodiment 2, an integrated papermaking pulping bleaching and wastewater purification process, the process steps include a papermaking pulping bleaching process section and a wastewater purification process section;
[0043] The pulping and bleaching process section of papermaking includes the following steps:
[0044] 1) Cut the prepared 1000 kg of wheat straw or bagasse raw materials into 3-4cm pieces or shreds for later use;
[0045] 2) According to the liquid-to-material ratio of 6:1, calculate the required amount of water as 6000 kg for standby, then add this amount of water into the mixing tank and start heating;
[0046] 3) When the heating temperature reaches 40°C under normal pressure, add lignin peroxidase to the stirring tank in an amount of 0.03umol / L, add pulping bleaching agent NaOH, dodecyl penetrant, the amount 0.09% based on dry pulp weight, then add the above-mentioned standby wheat straw or bagasse into the mixing tank and start stirring;
[0047] 4...
Embodiment 3
[0053] Embodiment 3, an integrated papermaking pulping bleaching and wastewater purification process, the process steps include a papermaking pulping bleaching process section and a wastewater purification process section;
[0054] The pulping and bleaching process section of papermaking includes the following steps:
[0055] 1) Cut the prepared 1000 kg reed or / and grass reed into 3-4cm pieces or shreds for later use;
[0056] 2) According to the liquid-material ratio of 7:1, calculate the required water volume as 7000 kg for standby, then add the water into the mixing tank and start heating;
[0057] 3) When the heating temperature reaches 40°C under normal pressure, add ligninase and hydrogen peroxide generating enzyme to the stirring tank, the amount added is 10.00umol / L, add pulping bleaching agent NaOH, absolute ethanol, anthraquinone , and its consumption is 1.0% based on dry pulp weight, then above-mentioned spare reed or / and grass reed are added in the mixing tank and...
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