Method for removing sulfate and Cd (II) wastewater through sponge iron and microorganism synergism
A sponge iron, sulfate technology, applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problems of low unit microbial content, poor sedimentation performance, low activity, etc. Good removal performance, strong electrochemical enrichment effect
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Embodiment 1
[0040] A method for removing sulfate and Cd(II) wastewater in cooperation with sponge iron and microorganisms, comprising the following steps:
[0041] (1) Preparation of sponge iron
[0042] Under the conditions of carbon content (mass ratio of simple carbon powder to iron slime) 1:2, reaction temperature 1200°C, and reaction time 25 minutes, iron slime was used as raw material to calcinate to prepare conventional sponge iron solid. Activate with dilute hydrochloric acid to prepare a sponge iron solution with a concentration of 0.6 g / L, which is designated as reaction solution A.
[0043] (2) Preparation of sulfate reducing bacteria SRB
[0044] A kind of sulfate-reducing bacterium—Desulfovibrio (Desulfovibrio; Desulfovibrio desulfurization subspecies) purchased from China General Microorganism Culture Collection Management Center (Chaoyang District, Beijing, China, zip code 100101, number 1.3469) was selected for 2 rings, and the It was transferred to 40ml of Desulfovibrio...
Embodiment 2
[0056] A method for removing sulfate and Cd(II) wastewater in cooperation with sponge iron and microorganisms, comprising the following steps:
[0057] (1) Preparation of sponge iron
[0058] Under the conditions of carbon content (mass ratio of simple carbon powder to iron slime) 1:2, reaction temperature 1200°C, and reaction time 25 minutes, iron slime was used as raw material to calcinate to prepare conventional sponge iron solid. Activate with dilute hydrochloric acid to prepare a sponge iron solution with a concentration of 0.4 g / L, which is designated as reaction solution A.
[0059] (2) Preparation of sulfate reducing bacteria SRB
[0060] A kind of sulfate-reducing bacterium---Desulfovibrio (Desulfovibrio) purchased from China Common Microorganism Culture Collection Management Center (Chaoyang District, Beijing, China, Zip Code 100101, No. 1.3469) picks 2 rings, transfers it in 40ml nutrient solution, Cultivate in the dark at 35°C for 5 days, use the proliferation medi...
Embodiment 3
[0072] A method for removing sulfate and Cd(II) wastewater in cooperation with sponge iron and microorganisms, comprising the following steps:
[0073] (1) Preparation of sponge iron
[0074] Under the conditions of carbon content (mass ratio of simple carbon powder to iron slime) 1:2, reaction temperature 1200°C, and reaction time 25 minutes, iron slime was used as raw material to calcinate to prepare conventional sponge iron solid. Activate with dilute hydrochloric acid to prepare a sponge iron solution with a concentration of 0.3 g / L, which is designated as reaction solution A.
[0075] (2) Preparation of sulfate reducing bacteria SRB
[0076] A sulfate-reducing bacterium—Desulfovibrio bacilli purchased from the China General Microorganism Culture Collection Management Center (Chaoyang District, Beijing, China, Zip Code 100101, No. 1.3469) was selected for 2 rings, transferred to 30ml of nutrient solution, and incubated at 35°C Cultivate in the dark for 3 days, use prolif...
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