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Sewage treatment method for room temperature nitrosation-anaerobic ammoxidation coupling symbiotic denitrification device for municipal sewage

An anammox and urban sewage technology, which is applied in the field of sewage treatment of urban sewage nitrification-anammox coupled symbiotic denitrification device at room temperature, can solve the problem of nitrification-anammox process covering a large area and operating costs Advanced problems, to achieve the effect of reducing oxygen consumption, reducing operating costs, and huge energy-saving benefits

Inactive Publication Date: 2013-05-29
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the technical problems of the existing nitrification-ANAMMOX process, which has a large area and high operating costs; and provides a sewage treatment method for urban sewage at room temperature nitrosation-ANAMMOX coupled symbiotic denitrification device

Method used

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  • Sewage treatment method for room temperature nitrosation-anaerobic ammoxidation coupling symbiotic denitrification device for municipal sewage

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Experimental program
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specific Embodiment approach 1

[0026] Specific implementation mode one: combine figure 1To illustrate, in this embodiment, the urban sewage room temperature nitrosation-anammox coupled symbiotic denitrification device includes a water inlet tank 1, a water inlet pump 2, a gas flow meter 3, a blower 4, a top cover 5, an inner cylinder 6, and an outer cylinder 7. Guide cover 8, annular water distributor 9, annular microporous aeration pipe 10, mud discharge pipe 11, stopper 12, exhaust pipe 13, water outlet tank 14, sampling port 15, suspended filler 16 and tie bars 17 , the main body of the reaction device is provided with an outer cylinder 7, an inner cylinder 6 and a shroud 8, the inner cylinder is detachably installed on the bottom plate of the outer cylinder, the shroud 8 covers the outside of the inner cylinder 6, the top surface of the shroud 8 is in contact with The top cover 5 is fixedly connected, and an exhaust pipe 13 is installed on the top cover 5. The top cover 5 and the outer cylinder 7 are fi...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that: the inner tube 6 and the shroud 8 are both in the shape of an inverted funnel. Others are the same as in the first embodiment.

[0028] The design of the shroud makes the water flow in the anoxic zone diffuse and rise in a curved shape, so that the mud and water in the outer cylinder can be fully mixed.

specific Embodiment approach 3

[0029] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the filling degree of the suspended filler is 60% to 70% by volume. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a room temperature nitrosation-anaerobic ammoxidation coupling symbiotic denitrification device for municipal sewage and a sewage treatment method and relates to a sewage treatment method, solving the technical problems that in the existing nitration-anaerobic ammoxidation process, occupied area is large and operation cost is high. The method comprises the following steps of: carrying out film formation with an intermittent film formation mode; introducing municipal sewage; completing the removal of COD (chemical oxygen demand) in the outer barrel and generating a small amount of NO2<-1>-N; and introducing mixed sludge subjected to nitrosation and anaerobic ammoxidation into the outer barrel so as to realize nitrosation-anaerobic ammoxidation coupling symbiotic denitrification. According to the invention, a continuous operation mode is adopted for the device; the device is small in occupied area, and the effective volume of a structure is reduced; and the device is simple and convenient in management, high in treatment efficiency, low in operation cost and the like, and specifically aims at domestic sewage having the characteristics of low substrate concentration and large water yield.

Description

technical field [0001] The invention relates to a sewage treatment method; in particular, it relates to a sewage treatment method of an urban sewage normal temperature nitrosation-anaerobic ammonium oxidation coupled symbiotic denitrification device. Background technique [0002] At present, the treatment methods of urban domestic sewage in my country and other countries in the world mainly adopt aerobic treatment (such as activated sludge method, etc.) and anaerobic treatment (such as USAB, etc.). Although they can achieve better treatment effects, there are still many problems. , Problems in aerobic treatment: (1) high energy consumption; (2) high sludge output; (3) need to add organic carbon source; (4) inconvenient management. Problems in anaerobic treatment: (1) The COD and BOD values ​​of the effluent after treatment are high; (2) The hydraulic retention time is long and produces foul odor. [0003] Compared with the traditional whole-process nitrification-denitrificat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 高大文卢健聪
Owner NORTHEAST FORESTRY UNIVERSITY
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