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Method for quickly culturing aerobic granular sludge and sequencing batch reaction device

An aerobic granular sludge, rapid technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve problems such as aerobic granular sludge limitation, achieve low cost, Solve the effects that are not easy to form and take too long to form

Inactive Publication Date: 2017-11-21
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

Up to now, the ability to quickly form aerobic granular sludge with good stability is still an important factor limiting the application of this technology in engineering

Method used

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  • Method for quickly culturing aerobic granular sludge and sequencing batch reaction device
  • Method for quickly culturing aerobic granular sludge and sequencing batch reaction device
  • Method for quickly culturing aerobic granular sludge and sequencing batch reaction device

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, a method for rapidly cultivating aerobic granular sludge and a sequencing batch reaction device provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0024] A method for rapidly cultivating aerobic granular sludge, comprising the following steps:

[0025] (1) Inoculation of activated sludge and pilot plant

[0026] The anaerobic digestion sludge and aerobic sludge (1:1) from the municipal sewage treatment plant were used as the seed sludge, which was inoculated in the AAASBR reaction device ( figure 1 ), the reactor is cylindrical, with an inner diameter of 0.25m, a height of 2m, and an effective working volume of 85L. The process is carried out at room temperature.

[0027] (2) Water intake method

[0028] In the process of aerobic granular sludge cultivation, the sewage with typical characteris...

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Abstract

The invention discloses a method for quickly culturing aerobic granular sludge and a sequencing batch reaction device. The method includes that in an alternate anaerobic / aerobic sequencing batch reactor, municipal sewage is used as incoming water, and anaerobic digestion sludge and aerobic sludge (mixing ratio being 1:1) are used as inoculating sludge; at the early stage of starting, enhancing of sludge settling performance improvement and initial aerobic granular crystal nucleus formation and accelerating and optimizing of aerobic granular sludge formation and thorough granulation are realized by inoculating high-concentration sludge (20g / L) and adopting a low sludge load (0.056kgCOD / kgSS d) running mode. The method has the advantages that granules are formed quickly, so that the problem that aerobic sludge granules are difficult to form and too long in forming time is solved; an aerobic granular sludge 'crystal nucleus hypothesis' quick mode is realized; cultured aerobic granular sludge is compact in structure, high in stability and faint yellow in appearance, average grain diameter is 750um, sludge volume index (SVI) is 20-35mL / g, and removal rates of COD, TN and TP can reach 92%, 81% and 85% respectively; the method is simple in process, convenient in operation and low in cost.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular, it provides a method for quickly cultivating aerobic granular sludge and a sequencing batch reaction device, which promotes the aerobic granular sludge by inoculating high-concentration sludge and operating with low sludge load. Sludge rapid cultivation of aerobic granular sludge in the AAASBR reactor. Background technique [0002] Aerobic granular sludge is a new type of high-efficiency biological treatment technology for sewage that has emerged in recent years. Compared with the traditional activated sludge method, it has many advantages: compact structure, good settling performance, high microbial concentration, and denitrification. Phosphorus capacity, simple process flow, small volume and footprint of the sewage treatment system, thereby reducing investment and operating costs. Therefore, aerobic granular sludge has broad prospects and has attracted the attention of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/1263Y02W10/10
Inventor 苏本生张原洁韩黎明马欣欣王雯刘广青
Owner BEIJING UNIV OF CHEM TECH
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