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An anaerobic-oxidation ditch-sacr combined deep denitrification system and process for high ammonia nitrogen sewage

A deep denitrification and oxidation ditch technology, applied in aerobic and anaerobic process treatment, anaerobic digestion treatment, aerobic process treatment and other directions, can solve the problem of limited effect of nitrogen removal, volume and dissolved oxygen concentration difficult to accurately control and other problems, to achieve the effect of low upgrading and transformation cost and reducing process cost

Active Publication Date: 2021-09-07
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional oxidation ditch process mainly uses the inhomogeneity of dissolved oxygen distribution in the ditch, and through reasonable design, it can generate alternate cycles of aerobic zone and anoxic zone in the ditch, so as to achieve the purpose of denitrification. Its biggest advantage is The removal of organic matter and total nitrogen can be achieved in the same ditch without the need for an external carbon source, but the disadvantages are also obvious. It is difficult to accurately control the respective volumes and dissolved oxygen concentrations of the aerobic zone and the anoxic zone in the same ditch. Therefore, the effect on nitrogen removal is limited

Method used

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  • An anaerobic-oxidation ditch-sacr combined deep denitrification system and process for high ammonia nitrogen sewage
  • An anaerobic-oxidation ditch-sacr combined deep denitrification system and process for high ammonia nitrogen sewage
  • An anaerobic-oxidation ditch-sacr combined deep denitrification system and process for high ammonia nitrogen sewage

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Embodiment 1

[0031] Example 1: An anaerobic-oxidation ditch-SACR combined deep denitrification system for high ammonia nitrogen sewage

[0032] Such as figure 1 As shown, an anaerobic-oxidation ditch-SACR combined deep denitrification system for high-ammonia nitrogen sewage, including a regulating tank, anaerobic reactor, oxidation ditch reactor, sedimentation tank, intermediate tank and SACR reaction connected in sequence through pipelines device; the outlet end of the regulating pool is connected with the inlet end of the intermediate pool through a pipeline; the pipeline is provided with a water pump for regulating the flow rate; the intermediate pool is provided with water quality detection equipment; the SACR reactor is provided with a pH detection device Instrument, DO detector, ORP detector, aeration equipment and agitator; also includes PLC controller, the PLC controller is respectively connected with water quality testing equipment, PH detector, DO detector, ORP detector, aeration...

Embodiment 2

[0036] Example 2: An anaerobic-oxidation ditch-SACR combined deep denitrification process for high-ammonia nitrogen sewage

[0037] The technology in this embodiment is based on the system in embodiment 1, and the anaerobic reactor is a UASB reactor; the volume of the oxidation ditch reactor=(high ammonia nitrogen sewage raw water total nitrogen concentration value / 50 * 30 * sewage per hour output value) m3; the unit of total nitrogen concentration in high ammonia nitrogen sewage raw water is mg / L, and the unit of sewage output per hour is m 3 ;SACR volume = (total nitrogen concentration value of high ammonia nitrogen sewage raw water / 50×20×hourly sewage production value) m 3 ; The unit of total nitrogen concentration in high ammonia nitrogen sewage raw water is mg / L, and the unit of sewage output per hour is m 3 .

[0038] An anaerobic-oxidation ditch-SACR combined high ammonia nitrogen sewage deep denitrification process, comprising the following steps:

[0039] (1) High ...

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Abstract

The invention provides an anaerobic-oxidation ditch-SACR combined high-ammonia nitrogen sewage deep denitrification system and process. The high-ammonia nitrogen sewage first enters the anaerobic reactor to remove most of the organic matter. The biochemical organic matter, ammonia nitrogen and part of the total nitrogen in the sewage are removed in the ditch, and the water enters the intermediate pool after effluent. At the same time, through the control of water quality testing equipment and PLC controller, some raw water is introduced into the intermediate pool to adjust the carbon-nitrogen ratio of the sewage. Then, The effluent enters the SACR reactor, using the characteristics of denitrifying bacteria, and through the regulation of the SACR reactor by the PH / DO / ORP detector and PLC controller, the sewage can be accurately denitrified-nitrified-endogenous denitrification, Therefore, deep denitrification, at the same time, no additional carbon source is required, and the process treatment cost is low. Moreover, for the established sewage treatment facilities using the oxidation ditch process, the process of this technical scheme can be implemented only by adding intermediate pools and SACR reactors , The cost of upgrading and transformation is low.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic-oxidation ditch-SACR combined deep denitrification system and process for high ammonia nitrogen sewage. Background technique [0002] At present, with the strengthening of environmental protection awareness, the strengthening of environmental pollution control and the development of environmental protection technology, water pollution has been relatively effectively controlled initially. However, the standard discharge of high-ammonia-nitrogen wastewater common in industrial production is still an urgent problem. The problem. High ammonia nitrogen wastewater mainly comes from chemical fertilizer, petrochemical, aquaculture, garbage treatment and other industries. In terms of high ammonia nitrogen wastewater treatment, it is not only necessary to pursue the technical indicators of efficient denitrification, but also to consider reducing energy consumption, sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/16
CPCC02F3/02C02F3/28C02F3/30C02F3/302C02F2001/007C02F2101/16C02F2209/005C02F2209/04C02F2209/06C02F2209/22
Inventor 王凯武道吉谭凤训罗从伟成小翔李宏业田宇
Owner SHANDONG JIANZHU UNIV