Disperse blue 56 production wastewater treatment method
A technology of production wastewater and treatment method, which is applied in the treatment field of disperse blue 56 production wastewater, can solve the problems of difficult eradication of macromolecular pollutants, and achieve the effects of stable removal effect, saving treatment cost and obvious economic benefits.
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Embodiment 1
[0032] The waste water is taken from the disperse blue 56 production workshop of a dye factory in Heilongjiang. The water quality is as follows: pH=13-14, COD: 277586mg / L, black.
[0033] Acid adjustment, degassing and sedimentation: Take 1L of wastewater to adjust pH=2, degas for 0.5 hours, settle for 1 hour and filter;
[0034] Specifically, the precipitated organic matter settles during acid adjustment and degassing. The principle of degassing is as follows:
[0035]
[0036] After acid adjustment, degassing and sedimentation steps, the COD removal rate can reach 65%-75%;
[0037] Catalytic decomposition: add alkaline solution to the filtrate to adjust the filtrate to pH = 13, then send it to a closed reactor for decomposition reaction, raise the temperature to 120°C, keep it warm for 2 hours, and drop to room temperature after the reaction is completed;
[0038] Specifically, in the catalytic decomposition step, macromolecular anthraquinone polycyclic pollutants are he...
Embodiment 2
[0045] The waste water is taken from the disperse blue 56 production workshop of a dye factory in Jilin. The water quality is as follows: pH=12, COD: 85962mg / L, deep red.
[0046] Acid adjustment, degassing and sedimentation: Take 1L of wastewater to adjust pH=1, degas for 1 hour, settle for 1.5 hours and then filter;
[0047] Catalytic decomposition: add alkaline solution to the filtrate to adjust the filtrate to pH = 12, then send it to a closed reactor for decomposition reaction, raise the temperature to 150°C, keep it warm for 2.5 hours, and drop to room temperature after the reaction is completed;
[0048] Preparation of complex extractant: Take 520mL N-lauryl (trialkylmethyl) amine, 30mL isomeric 14 alcohol and 450mL aviation kerosene and mix them evenly to prepare complex extractant;
[0049] Complexation extraction treatment: Take 500ml of decomposed water to adjust pH=1-2, add 150mL complexation extractant, mix and transfer mass for 45 minutes, stand and separate to obt...
Embodiment 3
[0053] The waste water is taken from the disperse blue 56 production workshop of a dye factory in Jiangxi. The water quality is as follows: pH=12, COD: 37825mg / L, black.
[0054] Acid adjustment, degassing and sedimentation: Take 1L of wastewater to adjust pH=2.5, degas for 10 minutes, settle for 1 hour and filter;
[0055] Catalytic decomposition: Add alkaline solution to the filtrate to adjust the filtrate to pH = 9, then send it to a closed reactor for decomposition reaction, raise the temperature to 105°C, keep it warm for 1 hour, and drop to room temperature after the reaction is completed;
[0056] Preparation of complex extractant: Take 600mL trioctylphosphine oxide, 40mL isomerized 18 alcohol and 360mL aviation kerosene and mix them evenly to prepare complex extractant;
[0057] Complexation extraction treatment: Take 500ml of decomposed water to adjust pH=1-2, add 500mL complexation extractant, mix and transfer mass for 60 minutes, stand and separate to obtain the ext...
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