Emulsified liquid waste water treatment method
A technology for wastewater treatment and emulsification, applied in chemical instruments and methods, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc. Achieve the effect of good solid-liquid separation, less sludge and low oil content
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Embodiment 1
[0026] The workshop of a mechanical parts manufacturer in Wuxi City produces emulsion wastewater during the production process. The emulsion wastewater COD15780mg / l, pH6.7, mineral oil content is 1200mg / l, and the water volume is 0.8 tons / day. In order to treat the emulsion wastewater, another The domestic sewage of this enterprise is 1.6 tons / day, and the water quality of domestic sewage is COD326mg / l, pH6.9, of which domestic sewage enters 0.8 tons / day of domestic sewage treatment unit 2 of aerobic biochemical method, and enters 0.8 tons / day of anaerobic biological treatment unit 8. tons / day. After the emulsion is separated from oil and water, the water quality is COD7636mg / l, and the dosage of calcium hydroxide in the demulsification and solid-liquid separation unit is 1000mg / l, heated to 50°C, stirred for 10 minutes, and when it reaches normal temperature, add PAM10mg / l , the stirring reaction time is 10 minutes, after precipitation for 1 hour, the COD of the supernatant i...
Embodiment 2
[0028]The workshop of a mechanical parts manufacturer in Wuxi City produces emulsion wastewater during the production process. The emulsion wastewater COD15780mg / l, pH6.7, mineral oil content is 1200mg / l, and the water volume is 0.8 tons / day. In order to treat the emulsion wastewater, another The daily sewage of this enterprise is 3.2 tons / day, and the water quality of domestic sewage is COD326mg / l, pH6.9, of which domestic sewage enters 1.6 tons / day of domestic sewage treatment unit 2 of aerobic biochemical method, and enters 1.6 tons / day of anaerobic biological treatment unit 8. tons / day. The water quality of the emulsion after oil-water separation is COD7636mg / l, the dosage of calcium hydroxide in the demulsification and solid-liquid separation unit is 1000mg / l, heated to 50°C, stirred for 10 minutes, and when the temperature reaches normal temperature, add PAM5mg / l , the stirring reaction time is 10 minutes, after precipitation for 1 hour, the COD of the supernatant is red...
Embodiment 3
[0030] The workshop of a mechanical parts manufacturer in Wuxi City produces emulsion wastewater during the production process. The emulsion wastewater COD15780mg / l, pH6.7, mineral oil content is 1200mg / l, and the water volume is 0.8 tons / day. In order to treat the emulsion wastewater, another The daily sewage of this enterprise is 3.2 tons / day, and the water quality of domestic sewage is COD326mg / l, pH6.9, of which domestic sewage enters 1.6 tons / day of domestic sewage treatment unit 2 of aerobic biochemical method, and enters 1.6 tons / day of anaerobic biological treatment unit 8. tons / day. The water quality of the emulsion after oil-water separation is COD7636mg / l, the dosage of calcium hydroxide in the demulsification and solid-liquid separation unit is 1000mg / l, and the stirring reaction time is 30 minutes. Minutes, after 2 hours of static precipitation, the COD of the supernatant was reduced to 2971mg / l, the supernatant entered the pH adjustment unit 6, and the pH was adj...
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