Nitrogen and phosphorus removal technology and device for sewage with low-carbon-nitrogen-ratio sewage

A technology for nitrogen and phosphorus removal and low carbon-to-nitrogen ratio, applied in water/sewage treatment, water/sewage treatment equipment, multi-stage water/sewage treatment, etc., can solve the problems of old process, large land occupation, high treatment cost, etc.

CN111825227AInactive Publication Date: 2020-10-27XUZHOU TENGRUI INTELLIGENT EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-10-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a nitrogen and phosphorus removal technology and device for sewage with a low carbon-nitrogen ratio. The device comprises a water inlet end, aeration equipment, air injection equipment, oxygenation equipment, a vertical bracket, precipitation slag treatment equipment, a return water distributor, a lifting arm and a water jet device, water to be treated enters the box body from the water inlet end on the left side and is communicated with the water outlet end at the right end of the box body; the water tank is sequentially divided into an aeration area, an air injectionarea, an oxygenation area and a sediment area by partition plates from left to right and communicated with one another, a return water distributor is arranged on the right side of the tank body, partof water flows back to enter the water inlet end through the return water distributor, enters the tank body from the left end again, and the other part rises to enter the upper spraying pipe. The return water distributor takes water from the 1 / 3 position of the upper portion of the box body, and the spraying pipe is communicated with a water jet device hose. The aeration equipment is arranged in the aeration area. The nitrogen and phosphorus removal technology and device for sewage with the low carbon-nitrogen ratio are novel and reasonable in structure, high in working efficiency and wide inequipment application range.
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Description

technical field

[0001] The invention belongs to the technical field of sewage facility treatment, and in particular relates to a technology and device for denitrification and dephosphorization of sewage with a low carbon-to-nitrogen ratio. Background technique

[0002] Among the methods currently used for biological nitrogen and phosphorus removal, the relatively mature process principle is the nitrification and denitrification process commonly used in engineering, including A2O, multi-stage AO, various types of oxidation ditch, SBR and its deformation process, MUCT process and pre-process The JHB process of internal carbon source denitrification, etc., these processes have a common advantage that the principle is clear, the operation is easy to control, and the water quality is stable. The theoretical basis is the nitrification and denitrification of microorganisms. However, in the case of a low carbon-to-nitrogen ratio, generally referring to a situation where the carbon-t...

Examples

Embodiment

[0036] The technology and device for denitrification and dephosphorization of sewage with a low carbon-to-nitrogen ratio provided by the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0037] figure 1 It is a low-carbon-to-nitrogen ratio sewage denitrification and dephosphorization technology and device diagram in the present invention. Including: water inlet 1, aeration equipment 2, air injection equipment 3, aeration equipment 4, vertical support 5, sedimentation slag treatment equipment 6, return water distributor 7, lifting arm 8, water jet 9; located on the left The water inlet 1, the water to be treated enters the tank from the water inlet 1, which is connected to the water outlet at the right end of the tank; the water tank is divided into aeration area, air injection area, oxygenation area, The sediment area is interconnected with each other. There is a return water distributor 7 on the right side of the ...