Denitrifying-based phosphorus and nitrogen removal process for sequencing batch type two-sludge system

A denitrification phosphorus removal and mud system technology, which is applied in the double mud system denitrification phosphorus removal process and the sequencing batch double mud system denitrification phosphorus removal and nitrogen removal technology field, can solve the problems of complexity and difficulty in wide application, and achieve the system Simple, solve the lack of carbon source, reduce the effect of aeration

Inactive Publication Date: 2014-05-14
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing double-sludge system denitrification phosphorus removal process is more complicated, which makes it difficult to be widely used.

Method used

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  • Denitrifying-based phosphorus and nitrogen removal process for sequencing batch type two-sludge system
  • Denitrifying-based phosphorus and nitrogen removal process for sequencing batch type two-sludge system
  • Denitrifying-based phosphorus and nitrogen removal process for sequencing batch type two-sludge system

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Embodiment Construction

[0024] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0025] The denitrification dephosphorization and nitrogen removal process of the double-sludge system of the present invention includes setting a nitrification liquid storage tank, a non-aeration tank and an aeration tank, and any two of the tanks are connected, and the nitrification liquid storage tank, aeration tank Any two pools in the aeration pool and the non-aeration pool are built together or separately, and the nitrifying liquid storage tank, the aeration pool and the non-aeration pool are jointly built or the three pools are built separately; In the tank, the non-aeration tank and the aeration tank or in any one of the tanks, the filler that provides the attachment medium for the growth of the biofilm is added; the sludge is regularly discharged from the nitrifying liquid storage tank, the non-aeration tank, or the aeration tank ;Specific steps ...

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Abstract

The invention discloses a denitrifying-based phosphorus and nitrogen removal process for a sequencing batch type two-sludge system, belongs to the technical field of biological treatment of wastewater and is particularly suitable for phosphorus and nitrogen removal treatment of low-carbon source wastewater. The denitrifying-based phosphorus and nitrogen removal process comprises a water inlet and outlet as well as aeration step, a double-precipitation step, a circulation step, a mixing step as well as a precipitation and aeration step; and the water inlet and outlet as well as aeration step, the double-precipitation step, the circulation step, the mixing and aeration step as well as the precipitation and aeration step are carried out in sequence repeatedly according to an operating period. With the adoption of the denitrifying-based phosphorus and nitrogen removal process, as limited carbon sources are fully utilized for denitrifying-based phosphorus removal, the aeration rate is reduced, the utilization ratio of the carbon sources in the wastewater treatment is increased, and the problems of insufficient carbon sources and high aeration energy consumption in the biological phosphorus removal of wastewater are effectively solved; and the denitrifying-based phosphorus and nitrogen removal process has the advantages of saving in the aeration rate, need few carbon sources, low construction and running costs, small occupied area and the like.

Description

technical field [0001] The invention relates to a double-sludge system denitrification dephosphorization process, in particular to a sequence-batch double-sludge system denitrification dephosphorization and denitrification process suitable for low-carbon source sewage. It belongs to the technical field of sewage biological treatment. Background technique [0002] In recent years, the problems of water environment pollution and water eutrophication have become increasingly serious. Nitrogen and phosphorus are the main factors causing water eutrophication. With the improvement of public environmental awareness and stricter and stricter restrictions on nitrogen and phosphorus discharge at home and abroad, the construction land is becoming more and more scarce. Research and development of small-area, economical and efficient sewage treatment technologies for nitrogen and phosphorus removal , especially denitrification phosphorus removal technology has been a hot spot in the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 张雁秋李燕张舒阳
Owner CHINA UNIV OF MINING & TECH
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