Treatment method for difficultly-degraded organic wastewater
A technology for organic wastewater and treatment methods, which is applied in special compound water treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problems of low biotransformation rate, limited tolerance, and long treatment process. , to achieve the effect of high processing efficiency, reduced reflux ratio and low operating cost
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Embodiment 1
[0032] A certain wastewater contains a small amount of hydrocarbon refractory substances, the average COD concentration is 6500mg / L, the average BOD concentration is 150mg / L, the average total nitrogen concentration is 500mg / L, and the pH is 7.5. The anoxic unit-aerobic unit-denitrification unit combination process of the present invention is used for treatment, wherein the aerobic unit is inoculated with YX flora according to the concentration of nitrosifying dominant flora in the sewage treatment system as 600mg / L, and simultaneously according to the sewage treatment system Add microbial growth promoter D1 at a medium accelerator concentration of 20mg / L to control the nitrification rate between 75% and 80%. The denitrification unit is inoculated with denitrification granular sludge FX-1 according to the sludge concentration of 500mg / L. Add microbial growth promoter E1 according to the accelerator concentration of 20mg / L in the sewage treatment system. The ratio of effluent f...
Embodiment 2
[0034] A certain wastewater contains a small amount of hydrocarbon refractory substances, the average COD concentration is 6500mg / L, the average BOD concentration is 150mg / L, the average total nitrogen concentration is 500mg / L, and the pH is 7.5. The anoxic unit-aerobic unit-denitrification unit combination process of the present invention is used for treatment, wherein the YX flora is inoculated in the aerobic unit according to the concentration of nitrosifying dominant bacteria in the sewage treatment system at 500 mg / L, and simultaneously according to the concentration of nitrosative bacteria in the sewage treatment system The accelerator concentration is 20mg / L and microbial growth accelerator D1 is added to control the nitrification rate between 75% and 80%. The denitrification unit first inoculates the activated sludge according to the sludge concentration of 1200mg / L, and then injects it according to 500mg / L Add denitrification granular sludge FX-2, and at the same time ...
Embodiment 3
[0036] A wastewater contains a small amount of nitrogen-containing heterocyclic compounds, with an average COD concentration of 4500mg / L, an average BOD concentration of 120mg / L, an average total nitrogen concentration of 200mg / L, and a pH of 7.8. The anoxic unit-aerobic unit-denitrification unit combination process of the present invention is used for treatment, wherein the sludge concentration of the aerobic unit is controlled at 1500mg / L, and then YX is added according to the concentration of nitrosifying dominant bacteria in the sewage treatment system as 400mg / L At the same time, add microbial growth promoter D2 according to the accelerator concentration of 15mg / L in the sewage treatment system, control the nitrification rate between 70% and 75%, and control the sludge concentration at 1000mg / L in the denitrification unit, and then Add denitrification and denitrification granular sludge FX-1 at 400mg / L, and at the same time add microbial growth accelerator E2 at the accele...
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