A2/O-UASB continuous flow integrated anaerobic ammonia oxidation coupling denitrifying phosphorus removal device and real-time control method

A technology of anaerobic ammonium oxidation coupling and denitrification phosphorus removal, which is applied in anaerobic digestion treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., to achieve optimal operation effect, realize carbon source and aeration volume, The effect of improving controllability

Active Publication Date: 2016-10-26
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 ammonia oxidation coupling denitrifying phosphorus removal device and real-time control method

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Experimental program
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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 through the calculation and output of the computer (41), a real-time control variable is obtained: when the TP concentration is greater than or equal to 1mg / L, the frequency conversion control box (40) controls the frequency conversion governor IV (35), increasing the nitrifying liquid reflux ratio is 300%~400%; When TP concentration≤0.2mg / L, the frequency conversion control box (40) controls the frequency conversion speed governor IV (35), reduces the nitrifying liquid reflux ratio and is 100 %~200%;

specific Embodiment approach 2

[0039] The DO sensor II (38) collects the DO concentration in the UASB reactor online, and the NH 4 + The -N sensor (30) collects the ammonia nitrogen concentration in the outlet water tank (25) online, and obtains the real-time control variable 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 governor VI (27) to increase the aeration rate, so that the DO concentration in the UASB reactor is maintained at 0.5-0.8 mg / L; when NH 4 + -N concentration≤0.5mg / L, the frequency conversion control box (40) controls the frequency conversion speed governor VI (27) to reduce the aeration rate, so that the DO concentration in the UASB reactor is maintained at 0.3~0.5mg / L;

[0040] Using this device, in the above two implementation modes, through the real-time control system of online monitoring and reasonable adjustment of operating parameters, the purpose of deep de...

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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 The real-time control and method of O-UASB continuous flow integrated anaerobic ammonium oxidation coupling denitrification phosphorus removal device belongs to the technical field of sewage biological treatment, and is a real-time control device and method for energy saving and consumption reduction of low C / N urban domestic sewage. A method for strengthening biological nitrogen and phosphorus removal based on this. Background technique [0002] With the continuous improvement of my country's sewage treatment rate, the problem of organic pollution has been gradually solved, and the organic pollution that caused black and odorous water bodies has been basically solved. However, the problem of eutrophication caused by ammonia nitrogen and phosphorus pollution has not only not been solved, but has become increasingly serious. the trend of. The most fundamental way to control water eutrophication and prevent book pol...

Claims

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Application Information

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Patent Type & Authority Applications(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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