Method for recycling epoxy chloropropane in epoxy chloropropane wastewater and treating wastewater
A technology for epichlorohydrin and wastewater treatment, which is applied in water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of high recovery cost and high energy consumption of epichlorohydrin problems, to achieve the effect of solving the problem of standard discharge or even zero discharge, improving economic benefits and shortening the service life
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Embodiment 1
[0021] A kind of epichlorohydrin recovery in epichlorohydrin waste water and its waste water treatment method comprise the following steps:
[0022] (1), Weigh 100 parts of bamboo charcoal, 36 parts of urea oxalate, 7 parts of water, 16 parts of polyurethane resin, 125 parts of ethanol, 75 parts of N,N-dimethylformamide and add them to the reactor, the stirring speed is 110r / Min, keep the system temperature at 60°C for 1h, distill the material under reduced pressure at 80°C and vacuum -0.07MPa for 2h, roast the material in a muffle furnace at 200°C for 2h, at 300°C for 2h, and at 450°C 2h, the material was naturally cooled to room temperature to obtain activated carbon;
[0023] (2) Weigh 100 parts of sodium chloride and 240 parts of epichlorohydrin wastewater into the reactor, and react for 0.6 h at a temperature of 25 ° C and a stirring speed of 140 r / min to obtain a pretreatment solution;
[0024] (3), after the pretreatment liquid was left standing at normal temperature ...
Embodiment 2
[0026] A kind of epichlorohydrin recovery in epichlorohydrin waste water and its waste water treatment method comprise the following steps:
[0027] (1) Weigh 100 parts of bamboo charcoal, 27 parts of urea oxalate, 5 parts of water, 13 parts of polyurethane resin, 90 parts of ethanol, and 60 parts of N,N-dimethylformamide and add them to the reactor, and the stirring speed is 80r / Min, keep the system temperature at 30°C for 0.3h, distill the material at 80°C and vacuum -0.05MPa for 2h, roast the material in a muffle furnace at 200°C for 2h, at 300°C for 2h, at 400°C Roasting for 2h, the material is naturally cooled to room temperature to obtain activated carbon;
[0028] (2) Weigh 100 parts of sodium chloride and 200 parts of epichlorohydrin waste water into the reactor, and react for 0.2 h at a temperature of 10 °C and a stirring speed of 120 r / min to obtain a pretreatment solution;
[0029] (3) After the pretreatment liquid is left standing at normal temperature and pressu...
Embodiment 3
[0031] A kind of epichlorohydrin recovery in epichlorohydrin waste water and its waste water treatment method comprise the following steps:
[0032](1) Weigh 100 parts of bamboo charcoal, 45 parts of urea oxalate, 12 parts of water, 20 parts of polyurethane resin, 150 parts of ethanol, and 90 parts of N,N-dimethylformamide and add them to the reactor at a stirring speed of 150r / min, keep the system temperature at 70°C for 2h, distill the material under reduced pressure at 80°C and vacuum -0.1MPa for 2h, roast the material in a muffle furnace at 200°C for 2h, at 300°C for 2h, and at 500°C 2h, the material was naturally cooled to room temperature to obtain activated carbon;
[0033] (2) Weigh 100 parts of sodium chloride and 300 parts of epichlorohydrin wastewater into the reactor, and react for 1 h at a temperature of 50 °C and a stirring speed of 180 r / min to obtain a pretreatment solution;
[0034] (3), after the pretreatment liquid is left standing at normal temperature an...
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