A method for self-cultivation of salt-tolerant activated sludge using sebacic acid wastewater
A technology of activated sludge and sebacic acid, applied in water/sludge/sewage treatment, water pollutants, chemical instruments and methods, etc. Eliminate the problems of bacterial screening, isolation and cultivation, and achieve the effect of shortening the start-up time and simple operation
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Embodiment 1
[0031] Embodiment 1, a kind of method utilizing sebacic acid waste water to carry out salt-tolerant activated sludge self-cultivation, its step comprises:
[0032] (1) Dilute the aged sebacic acid wastewater with an aqueous solution with a concentration of 5% sodium sulfate to COD<500mg / L, volatile phenol<50mg / L, and supplement nitrogen and phosphorus as needed for shaking or aeration culture, to the resistant Saline microorganisms are enriched;
[0033] The aged sebacic acid wastewater refers to sebacic acid wastewater stored at room temperature for at least 1 month;
[0034] (2) After the degradation rate of COD or volatile phenol > 80%, let it settle down, discharge 1 / 6 volume of the culture solution, then supplement the corresponding volume of sebacic acid waste water and an appropriate amount of nitrogen and phosphorus, and continue the cultivation; repeat this operation , until the culture of salt-tolerant activated sludge flocs;
[0035] (3) Maintain F / M=0.05, supplem...
Embodiment 2
[0036] Embodiment 2, a kind of method utilizing sebacic acid wastewater to carry out salt-tolerant activated sludge self-cultivation, its steps include:
[0037] (1) Dilute the aged sebacic acid wastewater with an aqueous solution with a sodium sulfate concentration of 15% to COD<500mg / L, volatile phenol<50mg / L, and supplement nitrogen and phosphorus as needed for shaking or aeration culture, to the resistant Saline microorganisms are enriched;
[0038] The aged sebacic acid wastewater refers to sebacic acid wastewater stored at room temperature for at least 1 month;
[0039] (2) After the degradation rate of COD or volatile phenol > 80%, let it settle down, discharge 1 / 2 volume of the culture solution, then supplement the corresponding volume of sebacic acid wastewater and appropriate amount of nitrogen and phosphorus, and continue the cultivation; repeat this operation , until the culture of salt-tolerant activated sludge flocs;
[0040] (3) Maintain F / M=0.80, supplement n...
Embodiment 3
[0041] Embodiment 3, a kind of method utilizing sebacic acid wastewater to carry out salt-tolerant activated sludge self-cultivation, its steps include:
[0042](1) Dilute the aged sebacic acid wastewater with an aqueous solution with a concentration of 10% sodium sulfate to COD<500mg / L, volatile phenol<50mg / L, and supplement nitrogen and phosphorus as needed for shaking or aeration culture, to the resistant Saline microorganisms are enriched;
[0043] The aged sebacic acid wastewater refers to sebacic acid wastewater stored at room temperature for at least 1 month;
[0044] (2) After the degradation rate of COD or volatile phenol > 80%, let it settle down, discharge 1 / 4 volume of the culture solution, then supplement the corresponding volume of sebacic acid wastewater and appropriate amount of nitrogen and phosphorus, and continue to cultivate; repeat this operation , until the culture of salt-tolerant activated sludge flocs;
[0045] (3) Maintain F / M=0.30, supplement nitro...
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