Shortcut nitrification-anaerobic ammonia oxidation equipment

Abstract

The embodiment of the invention provides shortcut nitrification-anaerobic ammonia oxidation equipment. The equipment comprises a shell, a water inlet pipeline, a guide cylinder, a three-phase separator and an aeration device, wherein the water inlet pipeline is arranged at the first end in the shell; the guide cylinder is arranged along the axial direction of the shell; the first end of the guide cylinder is communicated with the water inlet pipeline, and the second end of the guide cylinder is communicated with the first end of the three-phase separator; a cavity between the outer wall of the guide cylinder and the inner wall of the shell is filled with a carrier; and the aeration device is arranged in the guide cylinder. According to the embodiment of the invention, the aeration device is arranged in the middle guide cylinder, and double circulation flows at the bottom and the top of the equipment are formed by utilizing a gas stripping effect. The bottom circulation creates an oxygen limiting environment suitable for survival of ammonia oxidizing bacteria and anaerobic ammonia oxidizing bacteria, meanwhile, complete mixing of a matrix and microorganisms is achieved, and the mass transfer efficiency is improved. The top circulation realizes the effective separation of sludge, water and gas, avoids the loss of biomass, and keeps higher sludge concentration in the equipment.

Description

Technical field [0001] The present application relates to the field of sewage treatment, and in particular, the present application relates to a short-range nitrification-anaerobic ammonia oxidation apparatus. Background technique [0002] As the second largest economy in the world, China's urban domestic garbage has been ranked first in the world, reaching 170 million tons, increment at a rate of 8% to 10% per year. At the same time, China's main garbage disposal methods are hygienic landfills and waste incineration, and garbage will produce a large amount of garbage perfiltration in the stack, and its output can reach 5% to 28% of the gross waste. The rubbish leachate has the characteristics of high concentration of organic pollutants, high ammonia nitrogen, salinity, after anaerobic biological treatment, the organic matter concentration is lowered, but still contains some difficult to degrade organics, the ammonia nitrogen concentration is increased, which belongs to a typical...

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Problems solved by technology

[0004] In view of the shortcomings of the existing methods, the embodiment of the present application proposes a short-range nitrification-anammox equipment to solve the problems of low mass transfer efficiency and poor stability usually existing in the short-range nitrification-anammox process

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