Apparatus and method for microbial treatment of high-concentration ammonia-nitrogen wastewater

Abstract

The invention discloses an apparatus and a method for microbial treatment of high-concentration ammonia-nitrogen wastewater. The apparatus is composed of a reactor main body, a temperature controller, a pump, etc. The reactor main body is a cuboid structure and prepared by transparent synthetic glass or phenoplasts. The reactor main body is divided into 3-6 same compartments, and each compartment is divided into two regions of different sizes and is filled with zeolite, maifan stone and other natural minerals. One end of the reactor is provided with a liquid inlet while the other end is provided with a liquid outlet and a water collecting groove which is provided with two outlets: a water outlet and a backflow port. The reactor main body is nested in a water bath. A to-be-processed liquid is introduced into the reactor main body through a water pump, separated and degraded by microorganism, and then introduced into the water collecting groove through a drain outlet, wherein supernatant in the water collecting groove enters a liquid collecting barrel through the water outlet, and a sinking liquid flows back to the reactor main body through a reflux pump. A degradation process of the high-concentration ammonia-nitrogen wastewater can be realized under a temperature of 30-40 DEG C, a reflux ratio of 2-5 : 1 and a pH of 7.0-8.5.

Description

Technical field [0001] The invention belongs to the technical field of environmental protection, and particularly relates to a device for microbial treatment of high-concentration ammonia nitrogen wastewater. Background technique [0002] With the rapid development of my country's economic construction, the problem of water pollution has become increasingly prominent, the discharge of nitrogen pollutants has also increased, and the concentration of ammonia nitrogen in wastewater has become higher and higher, which has caused eutrophication of water bodies and disrupted aquatic ecosystems. The dual pressures of water pollution and water shortage have severely restricted China's economic and social development. [0003] There are physical, chemical, and biological methods for denitrification of wastewater. Among them, biological methods have the advantages of less energy consumption, lower cost, fewer by-products, and no secondary pollution to the environment, so they are used in act...

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Problems solved by technology

However, most of these methods are in the form of upflow reactors, which have disadvantages such as easy discharge of activated sludge with water, long start-up time, short process, and low treatment effect.

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