A kind of device and method for deep denitrification by anaerobic ammonia oxidation of industrial wastewater
An anaerobic ammonium oxidation and industrial wastewater technology is applied in the field of anaerobic ammonium oxidation deep denitrification devices for industrial wastewater, which can solve the problems of reducing technical advantages, increasing investment and operating costs, increasing process complexity, etc., and improving system stability. The effect of saving aeration energy, saving carbon source
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[0067] A coal-to-ethylene glycol wastewater with a water volume of 4000m 3 / d, the ammonia nitrogen concentration is 500-1000mg / L, and the COD concentration is 500-1500mg / L, which is a typical low C / N process wastewater.
[0068] The coal chemical wastewater first enters the high-load aeration tank, and the refractory organic matter is removed in the high-load aeration tank. The high-load aeration tank effluent adopts the figure 2 The device shown performs deep denitrification anammox, the process is as follows:
[0069] The influent water (ie high-load aeration tank effluent) and the return sludge flowing out of the sedimentation tank 4.1 enter the pre-inhibition zone 1 and are mixed under the action of the first aeration system 1.1, and the sludge return is 4000-8000 m 3 / d, the ammonia nitrogen concentration in the pre-suppression zone 1 is controlled to 200mg / L, the nitrifying solution return system is not set up (that is, the ammonia nitrogen concentration in the pre-su...
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