Device and method for removing heavy metal ions in industrial sewage
A technology for heavy metal ions and industrial sewage, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of expensive adsorbent, high treatment cost, long process flow, etc. The device structure design is reasonable and compact, the removal rate of heavy metals is high, and the effect of significant improvement is achieved.
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[0062] Example 1
[0063] The biofilter column 3-3-1 of the present invention is manufactured according to the following steps, and calculated by weight fraction:
[0064] Step 1: Add 1100 parts of ultrapure water with a conductivity of 0.65μS / cm to the reactor, start the stirrer in the reactor, rotate at 195rpm, start the heat pump, and increase the temperature in the reactor to 75℃; add sequentially 36 parts of polypentylene terephthalate, 17 parts of diethyl p-nitrophenyl phosphate, 40 parts of ethyl 2-(2,4-dichloro-5-fluorobenzoyl)acetate, stir until completely dissolved , Adjust the pH to 4.0, adjust the speed of the stirrer to 210rpm, the temperature is 95°C, and the esterification reaction is 25 hours;
[0065] Step 2: Take 30 parts of N-(1-nitrile-1,2-dimethylpropyl)-2-(2,4-dichlorophenoxy)propionamide, 5-chloro-2-(3 , 4-Dimethoxyphenyl)-2-isopropylpentane, 5 parts, crushed, the powder particle size is 900 mesh; add 10 parts of tetrachlorophthalic acid and mix evenly, sprea...
Example Embodiment
[0069] Example 2
[0070] The biofilter column 3-3-1 of the present invention is manufactured according to the following steps, and calculated by weight fraction:
[0071] Step 1: Add 1800 parts of ultrapure water with conductivity of 0.95μS / cm to the reactor, start the stirrer in the reactor, rotate at 270rpm, start the heat pump, and increase the temperature in the reactor to 90℃; add sequentially 78 parts of polypentylene terephthalate, 65 parts of diethyl p-nitrophenyl phosphate, 115 parts of ethyl 2-(2,4-dichloro-5-fluorobenzoyl) ethyl acetate, stir until completely dissolved , Adjust the pH value to 8.5, adjust the stirrer speed to 355rpm, the temperature to 160℃, and the esterification reaction for 50 hours;
[0072] Step 2: Take 75 parts of N-(1-nitrile-1,2-dimethylpropyl)-2-(2,4-dichlorophenoxy)propionamide, 5-chloro-2-(3 , 4-Dimethoxyphenyl)-2-isopropylpentane, 60 parts, pulverized, the powder particle size is 1600 mesh; add 90 parts of tetrachlorophthalic acid, mix evenl...
Example Embodiment
[0076] Example 3
[0077] The biofilter column 3-3-1 of the present invention is manufactured according to the following steps, and calculated by weight fraction:
[0078] Step 1: Add 1145 parts of ultrapure water with a conductivity of 0.6595μS / cm to the reactor, start the stirrer in the reactor, rotate at 211rpm, start the heat pump, and increase the temperature in the reactor to 79℃; add sequentially 66 parts of polypentylene terephthalate, 59 parts of diethyl p-nitrophenyl phosphate, 112 parts of ethyl 2-(2,4-dichloro-5-fluorobenzoyl)acetate, stir until completely dissolved , Adjust the pH to 4.85, adjust the speed of the stirrer to 219 rpm, the temperature is 95.16°C, and the esterification reaction is 45 hours;
[0079] Step 2: Take 56 parts of N-(1-nitrile-1,2-dimethylpropyl)-2-(2,4-dichlorophenoxy)propionamide, 5-chloro-2-(3 , 4-Dimethoxyphenyl)-2-isopropylpentane, 55 parts, pulverized, the powder particle size is 978 mesh; add 75 parts of tetrachlorophthalic acid to mix ev...
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