A rapid start-up device for anaerobic ammonium oxidation based on acid-base regulation

Abstract

The invention discloses an anaerobic ammonia oxidation quick start device based on acid-base regulation. The anaerobic ammonia oxidation quick start device comprises a reactor body, wherein a water inlet pipe and an up-flow reaction chamber are arranged at the lower end of the reactor body; an alkali guide pipe is arranged at the bottom of the up-flow reaction chamber, and an acid guide pipe is arranged at the middle part of the up-flow reaction chamber; the up-flow reaction chamber is connected with a settling chamber through an increasing coupling; a three-phase separator and an overflow dam are arranged in the settling chamber; the overflow dam is connected with a water outlet pipe; a gas collection chamber is positioned at the upper part of the settling chamber and is communicated with the settling chamber through a gas guide pipe; an exhaust pipe and a sealing pipe are arranged at the top of the gas collection chamber. The anaerobic ammonia oxidation quick start device disclosed by the invention can strengthen hydrolysis autocytolysis of heterotrophic bacteria in inoculated sludge, and reduce the density of the heterotrophic bacteria in the sludge; the pH value of a reaction solution can be controlled to be in the optimum range of anaerobic ammonium oxidation bacteria to guarantee the growth and propagation of the anaerobic ammonium oxidation bacteria; flocculent sludge generated through hydrolysis demise of granular sludge can be quickly washed out, the density of the anaerobic ammonium oxidation bacteria in the device can be increased, and the quick start of anaerobic ammonium oxidation is realized at last.

Description

technical field [0001] The invention relates to the field of wastewater biological denitrification, in particular to an anaerobic ammonia oxidation quick start device based on acid-base regulation. Background technique [0002] During the "Eleventh Five-Year Plan" period, the discharge of chemical oxygen demand was effectively controlled, and ammonia nitrogen rose as the main pollutant in surface water. The phenomenon of ammonia nitrogen exceeding the standard in surface water was widespread in the country, resulting in serious eutrophication of water bodies, which seriously endangered the physical and mental health of residents. health and social stability. my country has incorporated ammonia nitrogen into the "Twelfth Five-Year Plan" total pollutant control system. Water nitrogen pollution control has become a major environmental protection issue to be solved urgently. [0003] Anaerobic ammonium oxidation is a new nitrogen conversion pathway discovered in the 1990s. It ...

AI Technical Summary

Problems solved by technology

However, anaerobic granular sludge contains a large number of heterotrophic bacteria, which will have a competitive impact on the enrichment and cultivation of anammox bacteria; during the start-up process, it also involves heterotrophic reactions such as bacterial autolysis and denitrification , leading to constant changes in the pH of the reaction solution during the start-up process, further leading to a long start-up time of the anammox reactor, which limits the engineering application of the process

Images