Steel mil high-hardness waste water scaling inhibitor and rapid treatment method
A scale inhibitor, high hardness technology, applied in metallurgical wastewater treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of poor corrosion inhibition effect of carbon steel and can not meet the national standard of carbon steel corrosion rate Requirements and other issues, to achieve the effect of low cost, wide range of pH application, and increase environmental protection benefits
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Embodiment 1
[0019] A rapid anti-scaling treatment method for high-hardness wastewater from steel mills. The water in the collection tank is transported to the chelation reaction tank, and a hardness reducer, a chelating agent and a stabilizing agent are added to the chelation reaction tank during the treatment process. The weight ratio of dosing is 88% (sodium carbonate): 4% (EDTA): 8% (borax); the reaction time is 15 minutes; the water is lifted to the sloping plate sedimentation tank through the lifting pump, and natural precipitation, the sloping plate sedimentation tank Under the action of sodium carbonate, EDTA and borax, the water in the water forms larger flocs or colloids. At the same time, its high-molecular-weight inorganic acid radicals and metal ions form a multi-nuclear complex state in water, which can achieve rapid sedimentation. The mud generated by the settlement is pumped to the dehydration device for dehydration, and the resulting mud cake is discharged, and at the same ...
Embodiment 2
[0021] A rapid anti-scaling treatment method for high-hardness wastewater from steel mills. The water in the collection tank is transported to the chelation reaction tank, and a hardness reducer, a chelating agent and a stabilizing agent are added to the chelation reaction tank during the treatment process. The weight ratio of dosing is 90 (sodium carbonate): 3 (citric acid): 7 (baking soda); the reaction time is 10 minutes; the water is lifted to the sloping plate sedimentation tank through the lifting pump, and naturally precipitates, and the sloping plate sedimentation tank Under the action of sodium carbonate, citric acid and baking soda, the water forms larger flocs or colloids. At the same time, its high-molecular-weight inorganic acid radicals and metal ions form a multi-nuclear complex state in water, which can achieve rapid sedimentation. The mud generated by the bottom settlement is sent to the dehydration device by the mud pump for dehydration, and the obtained mud c...
Embodiment 3
[0023] A rapid anti-scaling treatment method for high-hardness wastewater from steel mills. The water in the collection tank is transported to the chelation reaction tank, and a hardness reducer, a chelating agent and a stabilizing agent are added to the chelation reaction tank during the treatment process. The weight ratio of dosing is 92% (sodium hydroxide): 2% (sodium EDTA): 6% (baking soda); the reaction time is 12 minutes; the water is lifted to the sloping plate sedimentation tank by the lifting pump, and it settles naturally. The water in the inclined plate sedimentation tank forms larger flocs or colloids under the action of sodium hydroxide, EDTA sodium salt and baking soda. At the same time, its high molecular weight inorganic acid radicals and metal ions form a multinuclear complex state in the water It can achieve rapid settlement effect. The mud generated by the bottom settlement is pumped to the dehydration device for dehydration through the mud pump, and the obta...
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