Method for treating silicate slag from wastewater treatment
A wastewater treatment and disposal method technology, applied in the direction of solid waste removal, etc., can solve the problems of high safety landfill cost, high landfill cost, and ecological risks, so as to eliminate instability, reduce content, and facilitate subsequent utilization Effect
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Embodiment 1
[0029] Such as figure 1 As shown, a certain active purple printing and dyeing industrial wastewater, raw water COD1650mg / l, chroma 480, pretreatment with molten iron desiliconization slag (120 mesh) as adsorbent, dosage 100kg per ton of water, adsorption reaction time 30min, precipitation 30min , effluent COD476mg / l, chromaticity 120; the desiliconization slag sludge in the sedimentation tank is concentrated, dehydrated, air-dried and crushed (particle size is less than 3cm), and then transported to the converter steelmaking slagging process, and the desiliconization slag sludge is added to the molten converter Steel slag is processed in the slag ladle at the end of tapping. As a conditioner for steel slag, it is added to the high-temperature molten converter steel slag after tapping at a ratio of 10%. After a period of fusion reaction, the water in the drum slag treatment process After quenching and granulation treatment, it becomes granular steel slag material, and the free ...
Embodiment 2
[0034] Such as figure 1As shown, a certain chromium-containing wastewater, the main pollutant Cr(III) in raw water is 245mg / L, is treated with ironworks blast furnace slag as an adsorbent, the dosage is 8.5kg per ton of water, the adsorption reaction time is 30min, the precipitation is 30min, and the effluent Cr(III) is 0.46mg / L, and the treated wastewater meets the requirements of relevant discharge standards; the blast furnace slag sludge in the sedimentation tank is concentrated, dehydrated, air-dried and crushed (particle size is less than 3cm), and then transported to the converter steelmaking slag removal process, high The slag slag is added to the molten converter steel slag in the slag ladle at the end of tapping. As a conditioner for steel slag, it is added to the high-temperature molten converter steel slag after tapping at a ratio of 1%. After a period of fusion reaction , through the water quenching and granulation treatment of the drum slag treatment process, it b...
Embodiment 3
[0038] Such as figure 1 As shown, in the first step, a sintering desulfurization wastewater is neutralized with milk of lime to pH 9.0 to remove heavy metals such as Zn, Cu, Cr, Ni, etc., and in the second step, the fly ash discharged from the power plant is used to treat the organic matter, ammonia nitrogen, and Pb in the wastewater. , Cd and adsorption treatment, raw water TOC21.6mg / L, NH 3 -N64mg / L, Pb18mg / L, Cd3.47mg / L, add fly ash at a rate of 15g per liter of wastewater, adsorption reaction for 30min, effluent TOC5.8mg / L, NH 3 -N17mg / L Pb0.35mg / L, Cd0.12mg / L, the fly ash sludge in the sedimentation tank is concentrated, dehydrated, air-dried and crushed (particle size is less than 3cm), and then transported to the converter steelmaking slag process, the fly ash slag The mud is added to the molten converter steel slag and carried out in the slag ladle at the end of tapping. As a conditioner for steel slag, it is added to the high-temperature molten converter steel slag a...
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