Method for removing refractory organic matters from concentrate of leachate membrane of incineration power plant
A technology for refractory organic matter and leachate, applied in the field of organic matter degradation, can solve the problems of poor removal rate of refractory organic matter, lack of systematic research on leachate membrane concentrate treatment, low biochemical properties, etc., and achieve great practicality Value, low technical operation difficulty, and low processing cost
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Embodiment 1
[0029] A method for removing refractory organic matter in the leachate membrane concentrate of an incineration power plant, comprising the following steps:
[0030] A. After adjusting the pH value of the leachate membrane concentrate, put it into the reaction coagulation tank;
[0031] B. Control the stirring speed to 310r / min~500r / min, add polyaluminum iron silicate to the reaction coagulation tank, add coagulant after 20s~40s, and adjust the stirring speed to 60r / min~100r after stirring for 30s~40s / min, continue to stir for 25min~35min, then send it to the air flotation tank or sedimentation tank for mud-water separation;
[0032] C. Dehydrate the separated sludge and transfer it to the incinerator for incineration; the separated sewage flows into the regulating tank to adjust the pH value and then flows into the electrochemical oxidation + photocatalytic reactor for advanced oxidation. After the electrolysis is completed, remove Precipitation; specifically, various method...
Embodiment 2
[0036] According to the principles of the foregoing embodiments, this embodiment discloses a set of specific implementation manners.
[0037] Taking the 100mL nanofiltration membrane concentrate produced by a municipal solid waste incineration power plant as an example, the nanofiltration membrane concentrates COD Cr 5000±700mg / L, BOD5 25.33 mg / L, UV 254 It is 48.10, the color is 1800 degrees, and the pH is 6.88.
[0038] A, the concentrated solution of the nanofiltration membrane is sent into the adjustment tank, and the pH value is adjusted to 3 in the adjustment tank and then put into the reaction coagulation tank;
[0039] B. Control the stirring speed to 310r / min; after starting stirring, immediately add polyaluminum ferric silicate PSAF into the reaction coagulation tank according to the concentration of 35g / L; add 7mg coagulant polyacrylamide PAM after 30s; stir for 30s Finally, adjust the stirring speed to 60r / min; continue to stir for 30min; stand still for 30min af...
Embodiment 3
[0042] Based on the principle of Embodiment 1, this embodiment takes the 100mL reverse osmosis membrane concentrate produced by a municipal solid waste incineration power plant as an example. The reverse osmosis membrane concentrate COD Cr 2000±500mg / L, BOD 5 120.90mg / L, UV 254 It is 39.95, the color is 1200 degrees, and the pH is 8.53.
[0043] A, the nanofiltration membrane concentrate is sent into the adjustment tank, and the pH value is adjusted to 6 in the adjustment tank and then put into the reaction coagulation tank;
[0044] B. Control the stirring speed to 400r / min; add 5g polyaluminum iron silicate PSAF to the reaction coagulation tank immediately after starting stirring; add 6mg coagulant polyacrylamide PAM after 60s; adjust the stirring speed to 60r / min after stirring for 30s min; continue to stir for 30 min; after the stirring is completed, let it stand for 30 min, and the sludge volume is 27-35 mL; BOD / COD is significantly increased;
[0045] C. Separation of...
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