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Multistage A/O (anoxic/oxic) biomembrane-sludge activation coupled denitrification and dephosphorization device and application thereof

A sludge activation and coupling denitrification technology, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc. It can solve the difficulty of TN compliance, easy loosening and swelling, and low sludge concentration. problems, to achieve the effect of reducing direct carbonation, load balancing, and increasing sludge concentration

Inactive Publication Date: 2016-09-21
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Description
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  • Application Information

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Problems solved by technology

[0002] At present, there is a serious problem of insufficient carbon sources in my country's urban sewage treatment plants. Insufficient carbon sources not only make it difficult to meet TN standards, but also cause problems such as low sludge concentration and easy loosening and swelling.

Method used

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  • Multistage A/O (anoxic/oxic) biomembrane-sludge activation coupled denitrification and dephosphorization device and application thereof

Examples

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Embodiment 1

[0039] Example 1: A multi-stage A / O biofilm and sludge activation coupling denitrification and phosphorus removal device and its method for treating sewage

[0040] Such as figure 1 As shown, a multi-stage A / O biofilm and sludge activation coupling denitrification and phosphorus sewage treatment system includes a raw water tank 1, a biofilm area, a sedimentation tank 9 and a sludge activation reactor 12;

[0041] The raw water tank 1 is connected with the biofilm area through the water inlet pump 2 and the water inlet pipe 18;

[0042] The biofilm area is connected with the sedimentation tank 9 through an outlet pipe 19;

[0043] A sludge return pump 11 is connected between the sedimentation tank 9 and the sludge activation reactor 12;

[0044] The sludge in the sludge activation reactor 12 enters the biofilm area through the activated sludge return pump 13;

[0045] The biofilm area includes two A / O biofilm units, forming a connection form of primary anoxic zone 5-first aero...

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Abstract

The invention discloses a multistage A / O (anoxic / oxic) biomembrane-sludge activation coupled denitrification and dephosphorization device and a sewage treatment method by using the device. The device comprises a raw water tank, a biomembrane region, a sedimentation tank and a sludge activation reactor. By combining a continuous-flow sectionalized water inlet biomembrane technique with a sludge activation technique, the synchronous nitrification-denitrification process is reinforced to obtain the low-carbon / nitrogen-ratio domestic sewage, thereby implementing the coupled technique with the optimized treatment effects. The speed-separation ball filler is arranged in the biomembrane region to increase the system stability, lower the sludge load, reduce the surplus sludge and enhance the treatment efficiency of the system.

Description

Technical field: [0001] The invention belongs to the technical field of water treatment, and in particular relates to a multi-stage anoxic-aerobic biofilm and sludge activation coupling denitrification and dephosphorization device and an application thereof. Background technique: [0002] At present, there is a serious problem of insufficient carbon sources in my country's urban sewage treatment plants. Insufficient carbon sources not only make it difficult to meet TN standards, but also cause problems such as low sludge concentration and easy loosening and swelling. [0003] Beijing local standard level B standard, the emission limit is COD<30mg / L, NH 4 + -N<2mg / L, TN<15mg / l, TP<1.5mg / l, TSS<8mg / l. The new standard is more stringent than the first-class A discharge standard in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002). A single process is far from meeting the needs of the times. The series and coordination of coupl...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/30C02F101/16
CPCC02F3/302C02F2101/105C02F2101/16C02F2101/30
Inventor 郭雪松孙聚龙肖本益刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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