Waste water biological treatment method for realizing anaerobic ammoxidation and methanation denitrification coupling
A technology of anaerobic ammonium oxidation and biological treatment, applied in the field of biological treatment of wastewater, can solve the problems of complex process, not coupled together to treat wastewater, and inability to couple
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Embodiment 1
[0020] Embodiment 1EGSB reactor and secondary reactor BAF joint process, its steps are as follows:
[0021] (1) Enrich the sludge with methanating bacteria, denitrifying bacteria and anaerobic ammonia oxidation activity in the expanded granular sludge bed reactor;
[0022] Wastewater components: COD concentration, 500mg / L; (NH 4 ) 2 SO 4 , 7.6mg / L; KH 2 PO 4 , 3.04mg / L; K 2 HPO 4 , 3.96mg / L; NaHCO 3 , 2000mg / L; NH 4 Cl, 148.6mg / L; NaNO 2 , 187.5mg / L; solution containing trace elements, 2.0mL / L. Composition of trace element solution: EDTA, 5.0g / L; FeSO 4 ·7H 2 O, 5.0mg / L; ZnSO 4 .7H 2 O, 2.2g / L; CoCl 2 .6H 2 O, 1.6g / L; CaCl 2 .2H 2 O, 5.5g / L; MnCl 2 .4H 2 O, 5.0g / L; CuSO 4 .5H 2 O, 1.6g / L; MgSO 4 .7H 2 O, 5.0g / L; (NH 4 ) 6 Mo7 o 24 .4H 2 O, 1.1g / L; NiSO 4 .6H 2 O, 0.42g / L.
[0023] Inoculate 22g of anaerobic granular sludge into an EGSB reactor with a volume of 1.5L in the reaction zone, and the volume loading rate is 4.8kg COD / (m 3 .d) and 0.768k...
Embodiment 3E
[0032] Embodiment 3EGSB+SBR combined process
[0033] Enrich and inoculate granular sludge with methanation, denitrification and anaerobic ammonium oxidation activities in the expanded granular sludge bed reactor, enrich and inoculate 1200mg COD / L aerobic ammonia oxidizing bacteria in the SBR reactor Specific operation Same as Example 1. The raw wastewater influent enters from the bottom of the EGSB reactor, and the return flow is adjusted so that the rising flow rate of the EGSB reactor is 4.86m / h; the top of the EGSB exits the water, and the EGSB effluent enters from the bottom of the SBR, and four SBR reactors are connected in parallel. The effective volume of the reactor is 4.7L, and the operation cycle of each reactor is 8h: water inflow for 2h, aeration for 3h, sedimentation for 1h, drainage for 2h; 4 reactors operate alternately. The probes of the DO and pH online control instruments were placed in the SBR reactor, and sodium bicarbonate (NaHCO 3 ) to adjust the pH ra...
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