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Biofilm culturing method for treating domestic wastewater

A film-hanging method and domestic sewage technology, which is applied in the field of film-hanging fillers, can solve the problems of slow film-hanging and shorten the start-up time of equipment, and achieve the effects of fast film-hanging speed, shortening start-up time, and improving film-hanging efficiency

Active Publication Date: 2017-11-21
JIANGSU CRRC ENVIRONMENT CO LTD
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Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a film-hanging method for fillers used to treat domestic sewage, which solves the problem of slow film-hanging in domestic sewage treatment equipment, and has the advantages of improving the film-hanging effect of nitrifying bacteria and shortening the length of equipment. The effect of startup time

Method used

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Embodiment Construction

[0026] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0027] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0028] As introduced in the background technology, there is a shortcoming of slow film formation in domestic sew...

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Abstract

The invention discloses a biofilm culturing method for treating domestic wastewater, and solves the problem of low biofilm culturing speed of domestic wastewater treatment equipment. The biofilm culturing method for treating domestic wastewater has effects of improving a biofilm culturing effect of nitrifying bacteria and shortening starting time of equipment. According to the technical scheme, the biofilm culturing method for treating domestic wastewater comprises the following steps: firstly, inoculating activated sludge in a sequencing batch reactor with a filler, and aerating for 2 days; secondly, adding a nutrient, taking 1-hour static settling, 0.5-hour water draining, 0.5-hour water feeding and 10-hour aerating as a running period, and running two periods every day so that an irreversible biofilm culturing stage is changed into a reversible biofilm culturing stage; and changing running conditions and sludge concentration, taking 1-hour static settling, 0.5-hour water draining, 0.5-hour water feeding and 22-hour aerating as a running period, running a period every day, and continuously culturing for several days to finish a biofilm culturing process.

Description

technical field [0001] The invention belongs to the technical field of domestic sewage treatment, in particular to a film-hanging method for fillers used to treat domestic sewage. Background technique [0002] Biological treatment of sewage is mainly divided into activated sludge method, biofilm method and natural biological treatment. [0003] The activated sludge process is unstable, requires regular sludge discharge, and is prone to sludge swelling. The treatment effect on low-concentration sewage is poor, and it is not suitable for household sewage treatment equipment; natural biological treatment mainly includes stabilizing ponds, slow infiltration system, rapid infiltration system, surface overflow treatment system, wetland treatment system and underground infiltration treatment system, etc., which have the disadvantages of large footprint and small load, are not suitable for the treatment of distributed domestic sewage alone; Membrane technology mainly includes biolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/1268Y02W10/10
Inventor 李新琦张浩唐晶刘华刘芳芳
Owner JIANGSU CRRC ENVIRONMENT CO LTD
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