Method for starting salt tolerant anammox reactor

Abstract

The invention discloses a method for starting salt tolerant anammox reactor applied to biological nitrogen removal of high salinity waste water (such as mariculture waste water and aquatic product processing waste water). Inoculated sludge is placed into an anammox reactor, the inoculated sludge comprises 1.65-69.12g / L of MLSS and 0.687-21.33g / L of MLVSS, operational conditions include that anaerobic environment is provided, temperature is 32.5-33.5 DEG C, HRT is two days, the concentrations of NH4+-N and NO2--N in inlet water are all 60-70mg / L and continuous culture is carried out until the concentrates of NH4+-N and NO2--N in effluent are all lower than 10mg / L; the concentrates of NH4+-N and NO2--N in inlet water are improved to be 70-160mg / L, HRT is 1-1.5 days, continuous culture is carried out for 20-50 days, the salinity of inlet water is regulated to be 5g / kg, 10g / kg, 15g / kg, 20g / kg, 25g / kg and 30g / kg respectively by virtue of sea water (the salinity of full sea water is 32g / kg), and continuous culture is respectively carried out on inlet water at each salinity until the concentrations of the NH4+-N and NO2--N in effluent are all lower than 20mg / L.

Description

Technical field: [0001] The invention relates to a method for starting an anammox reactor, in particular to a salt-tolerant anaerobic ammonium oxidation reaction that can be applied to biological denitrification of high-salinity wastewater (such as marine aquaculture wastewater, aquatic product processing wastewater, etc.) How to start the device. Background technique: [0002] In recent years, the biological denitrification process of anaerobic ammonium oxidation wastewater has attracted widespread attention in the field of sewage treatment at home and abroad because of its high efficiency, economy, and less secondary pollution. At present, the applied anammox reactor is generally cylindrical, with built-in non-woven fabric strip packing, and a sampling port on the side, with an effective volume of 5L to 6L. The reactor is kept insulated by a constant temperature water bath jacket, and the water is continuously pumped by a BT-200 constant flow pump. During the reaction pr...

AI Technical Summary

Problems solved by technology

However, seawater is a kind of natural high salt water, its salinity is generally 30-35‰, not only contains K + 、Na + , Cl - ions, also contains Ca 2+ , Mg 2+ 、Sr 2+ 、Br - , CO 3 2- (HCO 3 - ), F - , SO 4 2- A variety of ions and HBO greater than 0.05mmol / kg 3 Molecules and components are complex, so the existing investigations on salt tolerance are difficult to put into actual production