Method for using SBR for quick start of continuous flow double sludge denitrification dephosphorization process

A technology of denitrification phosphorus removal and quick start, which is applied in the direction of aerobic and anaerobic process treatment, and can solve problems such as slow start of operation

Active Publication Date: 2009-02-25
BEIJING UNIV OF TECH +2
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Problems solved by technology

The traditional denitrification and phosphorus removal process generally adopts the method of directly cultivating sludge or biofilm in the process system, but if the continuous flow double sludge denitrification dephosphorization process adopts the method of direct cultivation, the two systems will affect each other and limit their respective growth, resulting in slow start-up

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  • Method for using SBR for quick start of continuous flow double sludge denitrification dephosphorization process

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specific Embodiment approach

[0028] The method of SBR for rapid start-up of continuous-flow double-sludge denitrification and phosphorus removal process can be used to prepare the start-up process of a sewage treatment plant adopting double-sludge denitrification and phosphorus removal process or to study a test device for double-sludge denitrification and phosphorus removal process. Its specific implementation method is:

[0029] First, inoculation of phosphorus removal sludge from a sewage treatment plant is carried out in two stages in an SBR reactor with a suitable volume. In the first stage, A / O (anaerobic / aerobic) mode is adopted for intermittent operation. In the SBR reactor, add seed mud and domestic sewage, anaerobically stir for 4 hours, then aerate for 3 hours, settle and drain for 30 minutes, run 3 cycles a day, and control the DO (dissolved oxygen) of the mixed solution at: 2-5mg / L. When the removal rate of phosphorus reaches more than 85%, it proves that the aerobic phosphorus accumulating ...

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Abstract

A quick start method that can be applied on continuous flow double filthy mud denitrification dephosphorization process belongs to the field of activated sludge and sewage water treatment. The denitrifying phosphate accumulating sludge of the continuous flow two-sludge denitrifying phosphorus removal process and the biomembrane in a continuous flow two-sludge process biofilm nitrification tank are cultivated independently at intervals, then the denitrifying phosphate accumulating sludge and aerobic biofilm nitrification are put into a continuous flow two-sludge system. The traditional direct continuous cultivation start model needs to spend a plurality of months to achieve stability, but the method needs no more than two months to start successfully and achieve stability with high efficiency.

Description

technical field [0001] The technical field to which the invention belongs is the field of activated sludge wastewater treatment. Background technique [0002] Continuous-flow double-sludge denitrification and phosphorus removal process and the growth characteristics of microorganisms [0003] The continuous-flow double-sludge denitrification phosphorus removal process uses denitrifying phosphorus-accumulating bacteria (DPB), which releases phosphorus under anaerobic conditions, and can be used in anoxic environments. -N is a microorganism that absorbs phosphorus excessively for the electron acceptor to realize the removal of phosphorus in sewage. The difference between it and the traditional phosphorus removal process is that it can save energy and carbon sources, and produce less residual sludge, which is especially suitable for treating sewage with a low COD / TN ratio such as urban domestic sewage. The process uses two independent sludge systems: the activated sludge sys...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 王淑莹杨庆娟甘一萍李勇智刘莹彭永臻
Owner BEIJING UNIV OF TECH
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