Method for treating sewage by blast furnace heavy slag and blast furnace gas ash
A blast furnace gas ash, blast furnace heavy slag technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. The effect of a large potential difference
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Embodiment 1
[0017] The high-concentration printing and dyeing sewage of Shandong Lanyan Co., Ltd., COD3500mg / l, chroma 10200 times, and pH greater than 12, take 2.5m3 of printing and dyeing sewage and adjust the pH to less than 3 with 20% H2SO4, from the bottom of the micro-electrolytic pool, through the blast furnace heavy slag into the The sewage treatment layer composed of coke and blast furnace gas ash is left to stand for more than 2 hours. The COD degradation rate is 40.1%, the color degradation rate is 40%, and the pH is greater than 5.5.
Embodiment 2
[0019] Shandong Xinhua Pharmaceutical Co., Ltd. produced nitrosation mother liquid sewage produced by caffeine, COD37500mg / l, NH3-N1890mg / l, pH less than 5, took 25m3 of sewage and adjusted the pH to less than 3 with 20% H2SO4, and treated the bottom of the pool with micro-electrolysis, and then Blast furnace heavy slag is put into the three-layer sewage treatment layer consisting of coke and blast furnace gas ash, and left to stand for more than 3 hours. The COD degradation rate is 40%, the NH3-N degradation rate is 30%, and the pH is greater than 5.
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