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Method and device for electroadsorption-anammox treatment of inorganic ammonia nitrogen wastewater

An anaerobic ammonium oxidation and electro-adsorption technology, applied in aerobic and anaerobic process treatment, chemical instruments and methods, special compound water treatment, etc. Inorganic low ammonia nitrogen wastewater, easy operation and overcoming unstable operation effect

Active Publication Date: 2022-05-27
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
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  • Application Information

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Problems solved by technology

[0002] At present, for the treatment of inorganic low-ammonia nitrogen sewage, the traditional biological denitrification methods, whether biological or physical and chemical, have no efficient and economical treatment methods.

Method used

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  • Method and device for electroadsorption-anammox treatment of inorganic ammonia nitrogen wastewater
  • Method and device for electroadsorption-anammox treatment of inorganic ammonia nitrogen wastewater

Examples

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Effect test

Embodiment 1

[0046] In the present embodiment, such as Figure 1 As shown, a kind of electrical adsorption - anaerobic ammonia oxidation treatment of inorganic ammonia nitrogen wastewater device, mainly by the pretreatment unit, electrosorption treatment unit, SNAD concentrated water treatment unit three parts, including inlet water tank 1, inlet valve 2, inlet water pump 3, pressure gauge 4, pretreatment reactor 5, flow meter 6, thyristor power supply 7, electrosorption reactor 8, electrosorption reactor water outlet 9, electrosorption reactor concentrated water outlet 10, intermediate pool 11, concentrated water inlet pump 12, carbon source dosing component 13, aeration pump 14, Sponge packing reaction assembly 15, combined packing reaction assembly 16, 1 sponge packing plus three-phase separator assembly 17, SNAD reactor outlet 18.

[0047] Among them, the inlet water tank 1 is connected to the pretreatment reactor 5 through the inlet pump 3, and is equipped with a pressure gauge 4 to detect...

Embodiment 2

[0059] The apparatus and method of Example 1 were used to sample the chemical contaminated water source of a beijing plant to detect the ammonia nitrogen concentration of 26mg / L, and the low ammonia nitrogen wastewater was treated as follows:

[0060] Pretreatment unit: take 100L of wastewater that has been pretreated with high efficiency air flotation, and further remove the suspended solids and part of the organic matter of raw water into the quartz sand pretreatment reactor to ensure the normal operation of the subsequent electrosorption reactor treatment unit.

[0061]Electroadorption treatment unit: The pretreated raw water enters the electrosorption treatment unit, desalinates the raw water, and can further electrolyze the organic matter in the oxidized water, with a water yield of 72% and a desalination rate of 93%. When the output conductivity rises beyond the set upper limit, the PLC device automatically shorts the circuit, and the concentrated water generated by the raw ...

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Abstract

A method and device for treating inorganic ammonia-nitrogen wastewater by electro-adsorption-anammox oxidation, the method includes concentrating the wastewater to be treated in an electro-adsorption treatment unit to produce fresh water and concentrated water; the discharged concentrated water enters the SNAD concentrated water The treatment unit performs biological denitrification, and the water quality is discharged after reaching the standard. Compared with the traditional biological method for the treatment of inorganic low-ammonia nitrogen wastewater, this method can reduce the amount of carbon source added by about 80%; and the amount of water concentrated by electro-adsorption only accounts for 25% of the total water amount, greatly reducing the area occupied; This method does not require a large amount of reagent addition, and the operating cost is greatly reduced; the process has the advantages of simple operation, small footprint, low operating cost, continuous and stable removal of ammonia nitrogen, and is suitable for a variety of inorganic ammonia nitrogen wastewater and carbon source limited. Treatment of ammonia nitrogen wastewater.

Description

Technical field [0001] The present invention relates to the field of sewage treatment technology for treating various inorganic ammonia nitrogen wastewater, in particular to an electrical adsorption - anaerobic ammonia oxidation treatment of inorganic ammonia nitrogen wastewater method and apparatus. Background [0002] At present, for the treatment of inorganic low-ammonia nitrogen sewage, the traditional biological denitrification methods, whether biological methods or physicochemical methods, have no efficient and economical treatment methods. Compared with the traditional process of nitrogen removal, anaerobic ammonia oxidation has a smaller sludge production, which can solve the problem of sludge treatment, and does not require an organic carbon source, and concentrates on inorganic low ammonia nitrogen wastewater through electrical adsorption, and the application of anaerobic ammonia oxidation technology to inorganic low-ammonia nitrogen wastewater treatment has broad prosp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/16
CPCC02F9/00C02F1/469C02F1/001C02F1/444C02F3/30C02F2305/06C02F2101/16
Inventor 魏源送左富民隋倩雯
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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