A kind of epoxy plasticizer wastewater treatment method that can improve the performance of biochemical sludge
A technology of epoxy plasticizer and biochemical sludge, applied in water/sludge/sewage treatment, water/sewage multi-stage treatment, oxidation treatment of sludge, etc. Reduce the trouble of sludge incineration and other problems, and achieve the effect of reducing the amount of ferrous sulfate and generating less sludge
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Embodiment 1
[0022] The mass percentage content of hydrogen peroxide in the epoxy plasticizer production wastewater is about 2.5%, and the pH value is 3 to 4. The above-mentioned epoxy plasticizer wastewater is pumped up to an effective use volume of 15m 3 The reactor was added with 0.06% ferrous sulfate heptahydrate in the mass ratio of waste water, the reactor was heated with steam, and the reactor was started to stir at the same time. Heating to about 75°C, the liquid surface in the reaction kettle began to appear obvious bubbles and tumbling, stop heating, and at the same time add biochemical sludge with a volume ratio of wastewater of 20%, and the water content of biochemical sludge is about 99%. After 2.5 hours of reaction, if the hydrogen peroxide content in the wastewater is ≤0.05% (monitored by the potassium permanganate method), it can be considered that the Fenton reaction is over, and the reactor is cooled by the condensate coil. When the temperature in the reactor drops to 50°C...
Embodiment 2
[0025] The mass percentage content of hydrogen peroxide in the epoxy plasticizer production wastewater is about 2.5%, and the pH value is 3 to 4. The above-mentioned epoxy plasticizer wastewater is pumped up to an effective use volume of 15m 3 The reactor was added with 0.08% ferrous sulfate heptahydrate in the mass ratio of waste water, the reactor was heated with steam, and the reactor was started to stir simultaneously. Heating to about 70°C, the liquid surface in the reaction kettle began to appear obvious bubbles and rolling, stop heating, and add biochemical sludge with a volume ratio of 20% of wastewater at the same time, and the water content of biochemical sludge is about 99%. After 2.5 hours of reaction, if the hydrogen peroxide content in the wastewater is ≤0.05% (monitored by the potassium permanganate method), it can be considered that the Fenton reaction is over, and the reactor is cooled by the condensate coil. When the temperature in the reactor drops to 50°C N...
Embodiment 3
[0028] The mass percentage content of hydrogen peroxide in the epoxy plasticizer production wastewater is about 2.5%, and the pH value is 3 to 4. The above-mentioned epoxy plasticizer wastewater is pumped up to an effective use volume of 15m 3 The reactor was added with 0.06% ferrous sulfate heptahydrate in the mass ratio of waste water, the reactor was heated with steam, and the reactor was started to stir at the same time. Heating to about 80°C, the liquid surface in the reaction kettle began to appear obvious bubbles rolling, stop heating, and at the same time add biochemical sludge with a volume ratio of 20% of wastewater, the water content of biochemical sludge is about 99%. After 2 hours of reaction, if the hydrogen peroxide content in the wastewater is ≤0.05% (monitored by the potassium permanganate method), it can be considered that the Fenton reaction is over, and the reactor is cooled by the condensate coil. When the temperature in the reactor drops to 50°C Next, pre...
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