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a2/o-uasb continuous flow integrated anaerobic ammonium oxidation coupled denitrification phosphorus removal device and real-time control method

A technology of coupling anaerobic ammonium oxidation and denitrification to remove phosphorus, which is applied in the field of enhanced biological nitrogen and phosphorus removal to achieve the effect of reducing sludge production, realizing carbon source and aeration, and saving aeration

Active Publication Date: 2018-10-19
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this process, denitrification and phosphorus removal are divided into two systems, A 2 Biological phosphorus removal is carried out in the / O reactor, and biological nitrogen removal is carried out in the integrated anaerobic ammonium oxidation UASB reactor, thus solving the contradiction between denitrification bacteria and phosphorus removal bacteria in terms of sludge age

Method used

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  • a2/o-uasb continuous flow integrated anaerobic ammonium oxidation coupled denitrification phosphorus removal device and real-time control method

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Effect test

specific Embodiment approach 1

[0038] The TP sensor collects the total phosphorus concentration in the intermediate water tank (18) online, and obtains real-time control variables through the calculation and output of the computer (41): when the TP concentration is greater than or equal to 1mg / L, the frequency conversion control box (40) controls the frequency conversion speed regulator IV (35), increase the reflux ratio of nitrification liquid to 300%~400%; when the TP concentration is ≤0.2mg / L, the frequency conversion control box (40) controls the frequency conversion speed governor IV (35) to reduce the reflux ratio of nitrification liquid to 100 %~200%;

specific Embodiment approach 2

[0039] DO sensor II (38) collects DO concentration in UASB reactor online, NH 4 + -N sensor (30) collects the ammonia nitrogen concentration in the water tank (25) online, and obtains real-time control variables through the calculation and output of the computer (41): when NH 4 + -N concentration ≥5mg / L, the frequency conversion control box (40) controls the frequency conversion speed regulator Ⅵ (27) to increase the aeration rate, so that the DO concentration in the UASB reactor is maintained at 0.5~0.8mg / L; when NH 4 + -N concentration ≤0.5mg / L, the frequency conversion control box (40) controls the frequency conversion speed regulator Ⅵ (27) to reduce the aeration volume, so that the DO concentration in the UASB reactor is maintained at 0.3 ~ 0.5 mg / L;

[0040] Using this device, in the above two implementation modes, through the on-line monitoring real-time control system and reasonable adjustment of operating parameters, the purpose of deep nitrogen and phosphorus removal from ...

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Abstract

The invention discloses an A2 / O-UASB continuous flow integrated anaerobic ammonia oxidation coupling denitrifying phosphorus removal device and a real-time control method. A DO sensor collects the dissolved oxygen concentrations in an A2 / O reactor aerobic zone and an integrated anaerobic ammonia oxidation USAB reactor on line, the concentrations are transmitted into a PLC control cabinet in a signal mode and output through a computer, and therefore the dissolved oxygen concentration in the A2 / O reactor aerobic zone and the denitrification effect in the integrated anaerobic ammonia oxidation USAB reactor can be controlled; the concentrations of ammonia nitrogen, nitrite, nitrate and phosphorus in a middle water tank and a water drainage tank, the concentrates are output by a computer to a frequency converting control box, and therefore the aeration rate, the nitrification liquid reflux ratio, the sludge return ratio and the like are adjusted. By controlling the system in real time, the concentrations of all water effluent parameters are monitored on line, system operation is optimized, low-carbon-nitrogen-ratio urban sewage deep nitrogen and phosphorus removal is achieved, meanwhile, external carbon sources and the aeration rate are saved, and the discharge amount of residual sludge is reduced.

Description

Technical field [0001] A involved in the present invention 2 / O-UASB continuous flow integrated anaerobic ammonia oxidation coupled denitrification and phosphorus removal device real-time control and method, belonging to the field of sewage biological treatment technology, is a real-time control device for energy saving and consumption reduction of low C / N municipal sewage and Based on this, a method for enhanced biological nitrogen and phosphorus removal is formed. Background technique [0002] With the continuous improvement of the sewage treatment rate in my country, the problem of organic pollution has been gradually solved, and the organic pollution that caused the black and odor of water has been basically solved. However, the problem of eutrophication caused by ammonia nitrogen and phosphorus pollution has not only been unsolved, but has become increasingly serious. the trend of. The most fundamental way to control water eutrophication and prevent book body pollution is to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F3/30C02F3/00
CPCC02F3/006C02F3/28C02F3/2846C02F3/30
Inventor 彭永臻张健伟王杰张婷王淑莹
Owner BEIJING UNIV OF TECH
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