Multiphase Wet Oxidation Method for Industrial Wastewater Treatment
A technology for industrial wastewater and wet oxidation, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low COD removal rate and poor stability, and achieve COD removal rate improvement, good technology effect of effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] Catalyst preparation
[0036] Prepare 0.8mol / l Ti(SO 4 ) 2 , 0.4mol / l ZrOCl 2 ·8H 2 O and 0.2mol / l Ce(NO 3 ) 3 ·6H 2 O mixed solution 1000ml and 0.6mol / l ammonia water 500mL. The mixed solution of cerium salt, zirconium salt and titanium salt is co-precipitated with ammonia water to form a gel substance, which is vacuum filtered, washed, dried, and roasted at 800°C for 4 hours to make TiO 2 -ZrO 2 -CeO 2 carrier.
[0037] 19.8g TiO 2 -ZrO 2 -CeO 2 The support was impregnated with 0.526g RuCl 3 in aqueous solution. Impregnated at room temperature for 15 h, then dried in an oven at 110 °C for 8 h, then calcined in a muffle furnace at 450 °C for 5 h to obtain a catalyst precursor, and finally reduced with hydrogen at 400 °C for 3.5 h to obtain catalyst C1. The catalyst composition is shown in Table 1, and the preparation conditions are shown in Table 2.
[0038] evaluation test
[0039] The bed volume is 120 milliliters, the lower layer is a ring-shaped cera...
Embodiment 2
[0041] Catalyst preparation
[0042] Prepare 0.8mol / l Ti(SO 4 ) 2 , 0.4mol / l ZrOCl 2 ·8H 2 O and 0.2mol / l Ce(NO 3 ) 3 ·6H 2 O mixed solution 1000ml and 0.6mol / l ammonia water 500mL. The mixed solution of cerium salt, zirconium salt and titanium salt is co-precipitated with ammonia water to form a gel substance, which is vacuum filtered, washed, dried, and roasted at 800°C for 4 hours to make TiO 2 -ZrO 2 -CeO 2 carrier.
[0043] 19.8g TiO 2 -ZrO 2 -CeO 2 The carrier was impregnated with 0.333g PdCl 2 in aqueous solution. Impregnated at room temperature for 15 h, then dried in an oven at 110 °C for 8 h, then calcined in a muffle furnace at 420 °C for 6 h to obtain a catalyst precursor, and finally reduced with hydrogen at 450 °C for 3 h to obtain catalyst C2. The catalyst composition is shown in Table 1, and the preparation conditions are shown in Table 2.
[0044] evaluation test
[0045] The bed volume is 120 milliliters, the lower layer is a ring-shaped cera...
Embodiment 3
[0047] Catalyst preparation
[0048] Prepare 0.8mol / l Ti(SO 4 ) 2 , 0.4mol / l ZrOCl 2 ·8H 2 O and 0.2mol / l Ce(NO 3 ) 3 ·6H 2 O mixed solution 1000ml and 0.6mol / l ammonia water 500mL. The mixed solution of cerium salt, zirconium salt and titanium salt is co-precipitated with ammonia water to form a gel substance, which is vacuum filtered, washed, dried, and roasted at 800°C for 4 hours to make TiO 2 -ZrO 2 -CeO 2 carrier.
[0049] 19.8g activated carbon was impregnated with 0.513g H 2 PtCl 6 ·6H 2 O solution. Impregnated at room temperature for 15 h, then dried in an oven at 110 °C for 8 h, then calcined in a muffle furnace at 500 °C for 4 h to obtain a catalyst precursor, and finally reduced with hydrogen at 350 °C for 4 h to obtain catalyst C3. The catalyst composition is shown in Table 1, and the preparation conditions are shown in Table 2.
[0050] evaluation test
[0051] The bed volume is 120 milliliters, the lower layer is a ring-shaped ceramic packing, th...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More