1,4-Butanediol Chemical Wastewater Treatment Process
A chemical wastewater and treatment process technology, applied in the field of environmental engineering, can solve problems affecting continuous production, etc., and achieve stable operation performance, low effluent COD, and good treatment effect
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[0024] Example 1
[0025] The 1,4-butanediol chemical wastewater first enters the homogeneous distribution pool. The wastewater from the distribution pool is fed into a first-stage aerobic biological carrier fluidized bed reaction tank + second-stage activated sludge biological oxidation tank + sedimentation tank through a lift pump, with a reaction tank volume of 26L. The outlet flow rate of the waste water of the homogenization tank is 5L / d, and the COD is 20,231mg / L. The nutrient urea and sodium dihydrogen phosphate are added to the homogenization tank to adjust; and the pH value of the homogenization tank is adjusted to 7. One-stage aerobic biological carrier fluidized bed reaction tank with biological carrier (Boride (Nanjing) Purification Technology Co., Ltd. Composite Modified Carrier Type P15) is added 50%, one-stage microbial sludge concentration is 10g / L, DO3.5mg / L, hydraulic The stay time is 5 days. The sludge concentration of the second stage activated sludge tank ...
Example Embodiment
[0027] Example 2
[0028] The 1,4-butanediol chemical wastewater first enters the homogenization tank. The wastewater from the homogenization tank is fed into the first-stage carrier biofilm aerobic tank through the lifting pump, and the outlet flow of the wastewater from the homogenization tank is 60m 3 / d, COD 21,890mg / L, add nutrient urea and disodium hydrogen phosphate to the homogenization pool to adjust, and adjust the pH to 5-7 with alkali. One stage of aerobic tank carrier filler (Boride (Nanjing) Purification Technology Co., Ltd. composite modified packing P15 type) is added 40%, one stage of carrier biofilm reaction tank sludge concentration is 12g / L, DO2.0mg / L, hydraulic retention Time 2 days. The second-stage activated sludge tank has a sludge concentration of 4g / L, a DO of 2.5mg / L, and a hydraulic retention time of 3.5 days. The second-stage aerobic effluent enters the second settling tank for solid-liquid separation, the wastewater is discharged to the discharge ...
Example Embodiment
[0030] Example 3
[0031] The 1,4-butanediol process wastewater is first filtered by a grid and placed in a homogenization tank. The wastewater from the homogenization tank is fed into the first-stage carrier biofilm aerobic tank through the lift pump, and the outlet flow of the wastewater from the homogenization tank is 50m 3 / d, COD 23,538mg / L, add nutrient ammonia water and sodium dihydrogen phosphate to the homogenization pool to adjust; and use inorganic acid or alkali to adjust the pH value of the homogenization pool to 5.0-6.0. One stage of aerobic tank carrier filler (Boride (Nanjing) Purification Technology Co., Ltd. composite modified packing P15 type) is added 65%, one stage carrier biofilm reaction tank sludge concentration 9g / L, DO3.0mg / L, hydraulic retention Time 5 days. The sludge concentration of the second stage activated sludge tank is 3g / L, DO4.0mg / L, and hydraulic retention time is 5 days. The second-stage aerobic effluent enters the second settling tank f...
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