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Improved UCT step-feed efficient biological denitrification and dephosphorization device based on DEAMOX technology and application method

A technology for staged water inflow and biological denitrification, which is applied in the fields of water pollutants, multi-stage water treatment, chemical instruments and methods, and can solve the problems of high carbon source, high energy consumption, dosing and other problems

Active Publication Date: 2016-07-27
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of high energy consumption and high carbon source dosing in ordinary low-carbon source urban sewage treatment process, and to provide an improved UCT segmented water-influent high-efficiency biological denitrification and phosphorus removal device and application method based on DEAMOX technology

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  • Improved UCT step-feed efficient biological denitrification and dephosphorization device based on DEAMOX technology and application method

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specific Embodiment approach 1

[0033] Specific Embodiment 1: This embodiment is based on the DEAMOX technology-based improved UCT staged influent high-efficiency biological denitrification and phosphorus removal device, including urban sewage raw water tank 1, anaerobic reactor 2, first stage anoxic reactor 3, and second stage connected in sequence. One-stage aerobic reactor 4, second-stage anoxic reactor 5, second-stage aerobic reactor 6, third-stage anoxic reactor 7, third-stage aerobic reactor 8, sedimentation tank 9 and outlet pipe 10, and return the sludge external return line from the bottom of the sedimentation tank 9 to the first section anoxic reactor 3 and return the sludge internal return line from the first section anoxic reactor 3 to the anaerobic reactor 2;

[0034] The anaerobic reactor 2, the first section anoxic reactor 3, the first section aerobic reactor 4, the second section anoxic reactor 5, the second section aerobic reactor 6, the third section anoxic Both the reactor 7 and the third ...

specific Embodiment approach 2

[0042] Specific implementation mode 2: This implementation mode is based on the application method of DEAMOX's improved UCT segmented water-influent high-efficiency biological nitrogen and phosphorus removal device, which is carried out in accordance with the following steps:

[0043] 1. Start-up phase - inoculation of activated sludge

[0044] Inoculate the activated sludge from the secondary sedimentation tank of the ordinary urban sewage treatment plant in the improved UCT subsection water inlet reactor. The rotameter 15 aerates the first-stage aerobic reactor 4, the second-stage aerobic reactor 6 and the third-stage aerobic reactor 8 to maintain the dissolved oxygen concentration DO=3~5mg / L, and open at the same time The agitator 13 of the anaerobic reactor 2, the first section anoxic reactor 3, the second section anoxic reactor 5 and the third section anoxic reactor 7 is mixed and vexed for several hours; when the mixed liquid ammonia nitrogen concentration NH 4 + When ...

specific Embodiment approach 3

[0057] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step one, inoculate the activated sludge of the secondary settling tank of the urban sewage plant in the improved UCT subsection water inlet reactor, so that the sludge concentration is 3500mg / L. Others are the same as in the first embodiment.

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Abstract

The invention relates to an improved UCT step-feed efficient biological denitrification and dephosphorization device based on the DEAMOX technology and an application method and belongs to the technical field of biological sewage treatment.The technical problems of high energy consumption and high carbon source adding in a common low-carbon-source urban sewage treatment process are solved through the organic matter type denitrification ammoxidation technology.The device mainly comprises an urban sewage raw water tank, an improved UCT step-feed device and a settling pond.After inoculation of activated sludge is carried out to start the improved UCT step-feed process of an activated sludge system, a second-segment anoxic reactor and a third-segment anoxic reactor are inoculated with Anammox sponge filler, and efficient denitrification and dephosphorization of low-carbon-source urban sewage are achieved by adjusting the water intake ratios of all segments, inflow water C / N and the actual anoxic zone hydraulic retention time and enhancing the denitrification ammoxidation technology of the system.The dosage of an organic carbon source is greatly reduced while aeration energy consumption is saved, and the disposal cost of residual sludge is reduced.

Description

technical field [0001] The invention relates to an improved UCT segmented water inlet high-efficiency biological nitrogen and phosphorus removal device based on DEAMOX technology and an application method. Background technique [0002] The principle of traditional biological denitrification is mainly based on the conversion of ammonia nitrogen (NH 4 + ) to nitrite nitrogen (NO 2 - ), which is then oxidized to nitrate nitrogen (NO 3 - ), while denitrifying bacteria use organic matter as a carbon source to convert NO 3 - reduced to nitrogen (N 2 ) process; the principle of traditional biological phosphorus removal is mainly to use phosphorus accumulating bacteria to absorb organic matter in the anaerobic zone to release phosphorus in the body, and then excessive phosphorus absorption occurs in the aerobic zone to absorb phosphorus in the water into the body, so as to achieve phosphorus from The purpose of water removal. From the analysis of the mechanism of biological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/34C02F101/16
CPCC02F3/30C02F3/308C02F3/34C02F2101/16C02F2209/03C02F2209/14C02F2209/15C02F2209/18C02F2209/22C02F2301/08
Inventor 彭永臻刘文龙马斌王淑莹马琳娜
Owner HARBIN INST OF TECH
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