Hydrophilic/hydrophobic sewage dephosphorization coagulant and preparation method thereof
A coagulant, water and sewage technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of large sludge, difficult treatment, increased water treatment costs, etc., to achieve less residual pollutants, less environmental load, clear water effect
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[0035] Example 1:
[0036] A hydrophilic / hydrophobic sewage phosphorus removal coagulant, which is prepared according to the following steps:
[0037] (1) Pretreatment of raw materials: use industrial waste as raw material and grind into powder with less than 100 mesh. The industrial waste comes from an aluminum factory in Shandong, and its main ingredient is: Al 2 O 3 The content is 23.82wt%, Fe 2 O 3 The content is 23.05wt%, SiO 2 The content is 21.65wt%, Na 2 The O content is 17.36wt%, the CaO content is 1.34wt%, the ignition loss is 12.75wt%, and the balance is a very small amount of impurities;
[0038] (2) Preparation of active solution: mix concentrated sulfuric acid into dilute sulfuric acid with a volume fraction of 10%, add the surfactant sodium dodecylbenzene sulfonate and mix well, that is, the active solution, and the surface active agent accounts for the volume fraction of the solution Is 0.30%;
[0039] (3) Activation of raw materials: mix the pretreated raw material p...
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[0043] Example 2:
[0044] A hydrophilic / hydrophobic sewage phosphorus removal coagulant, which is prepared according to the following steps:
[0045] (1) Pretreatment of raw materials: use industrial waste residue as raw material and grind into powder with less than 100 mesh; waste residue comes from a smelter in Hubei, and its main component is: Al 2 O 3 The content is 19.45wt%, Fe 2 O 3 The content is 24.03wt%, SiO 2 The content is 29.51wt%, Na 2 The O content is 1.54wt%, the CaO content is 2.31wt%, the ignition loss is 23.14wt%, and the balance is impurities;
[0046] (2) Preparation of active solution: mix concentrated sulfuric acid into dilute sulfuric acid with a volume fraction of 15%, add surfactant sodium lauryl sulfate, and the volume fraction of the surfactant in the solution is 0.23%;
[0047] (3) Activation of raw materials: mix the pretreated raw materials and the active solution according to a weight ratio of 1:2, then add them to the reactor, stir and react at 100°C f...
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[0049] Example 3:
[0050] A hydrophilic / hydrophobic sewage phosphorus removal coagulant, which is prepared according to the following steps:
[0051] (1) Raw material pretreatment: use industrial waste as raw material and grind into powder with less than 100 mesh; use industrial waste as raw material and grind into powder with less than 100 mesh; waste slag comes from Hubei smelter and its main ingredient is: Al 2 O 3 The content is 19.45wt%, Fe 2 O 3 The content is 24.03wt%, SiO 2 The content is 29.51wt%, Na 2 The O content is 1.54wt%, the CaO content is 2.31wt%, the ignition loss is 22.16wt%, and the balance is impurities;
[0052] (2) Preparation of active solution: mix concentrated sulfuric acid into dilute sulfuric acid with a volume fraction of 15%, add surfactant sodium dodecylbenzene sulfonate, and the volume fraction of the surfactant in the solution is 0.12%;
[0053] (3) Activation of raw materials: mix the pretreated raw materials and the active solution according to a we...
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