Sewage disinfection device and disinfection method
A technology of disinfection device and disinfection method, applied in water/sewage treatment, chemical instruments and methods, light water/sewage treatment, etc., can solve problems such as difficulty in meeting practical application requirements and small treatment capacity
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Embodiment 1
[0044] A method for preparing a photocatalyst for a sewage disinfection device, comprising:
[0045] S1: take SnCl respectively 4 ·5H 2 O and La(NO 3 ) 3 ·6H 2 O and transition metal nitrates (Os, Hf, Eu, the molar ratio of metal cation species is 0.2:0.4:1) dissolved in deionized water (SnCl 4 ·5H 2 O, La(NO 3 ) 3 ·6H 2 The ratio of the amount of O to the transition metal is 1:0.9:0.2), heated to 80°C, added 1M NaOH solution, and kept stirring to obtain white precipitate mixed solutions A and B;
[0046] S2: Mix the above-mentioned precipitation mixture A and B, add citric acid, ethylene glycol (the amount of substances added by citric acid, ethylene glycol and SnCl 4 ·5H2 O, La(NO 3 ) 3 ·6H 2 The ratio of O is 1.2:2.4:1:0.9), after stirring, add ammonia water dropwise to adjust the pH value of the solution to 2.8, and heat in a water bath at 70°C for 4 hours to form a sol;
[0047] S3: add graphene oxide (the quality of graphene oxide and SnCl 4 ·5H 2 The mass...
Embodiment 2
[0049] The difference between the preparation of a photocatalyst for a sewage disinfection device and Example 1 is:
[0050] S1: Among transition metals Os, Hf, Eu, the molar ratio of metal cations is 0.3:0.5:1; SnCl 4 ·5H 2 O, La(NO 3 ) 3 ·6H 2 The ratio of the amount of O to the transition metal is 1:0.8:0.1;
[0051] S2: The amount of substances added by citric acid and ethylene glycol and SnCl 4 ·5H 2 O, La(NO 3 ) 3 ·6H 2 The ratio of O is 1.2:2.4:1:0.8;
[0052] S3: Quality of graphene oxide vs. SnCl 4 ·5H 2 The ratio of the amount of substance of O is 0.6:1g / mol.
Embodiment 3
[0054] The difference between the preparation of a photocatalyst for a sewage disinfection device and Example 1 is:
[0055] S1: Among transition metals Os, Hf, Eu, the molar ratio of metal cations is 0.2:0.7:1; SnCl 4 ·5H 2 O, La(NO 3 ) 3 ·6H 2 The ratio of the amount of O to the transition metal is 1:0.8:0.2;
[0056] S2: The amount of substances added by citric acid and ethylene glycol and SnCl 4 ·5H 2 O, La(NO 3 ) 3 ·6H 2 The ratio of O is 1.2:2.4:1:0.85;
[0057] S3: Quality of graphene oxide vs. SnCl 4 ·5H 2 The ratio of the amount of O to the substance is 1:1g / mol.
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