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Composite material for accelerating formation of aerobic granular sludge as well as preparation method and application of composite material

A technology of aerobic granular sludge and composite materials, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve problems such as poor structural stability and slow formation, and achieve large impact Effects of loading, accelerating formation, lifting effect

Pending Publication Date: 2022-04-19
SHIHEZI UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The present invention aims at the problem of poor structural stability and slow formation of particles due to excessive proliferation of filamentous bacteria and endogenous respiration of microorganisms during the cultivation of aerobic granular sludge

Method used

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Embodiment

[0029] This embodiment relates to a composite material for accelerating the formation of aerobic granular sludge, a composite material formed of porous carbon materials and nano-iron-based materials; the nano-iron-based materials are loaded on the surface of the porous carbon material and / or in its pores ; The content ratio of the nano-iron-based material to the porous carbon material is 0.5-1.0:1.0; the nano-iron-based material includes zero-valent iron and / or iron oxidation products.

[0030] This embodiment uses activated carbon as a carrier. After the porous structure of activated carbon is loaded with iron-based materials, the pores are filled with iron-based materials, and the porosity decreases by 20%-80%; the specific surface area of ​​nano-iron-based materials is 20-80m 2 / g, the specific surface area of ​​activated carbon is 200-300m 2 / g, the specific surface area of ​​activated carbon and iron-based materials composite nanostructure conductive material is 50-100m ...

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Abstract

The invention provides a composite material for accelerating formation of aerobic granular sludge as well as a preparation method and application of the composite material. According to the invention, an aerobic granular sludge rapid construction system based on the porous carbon and iron-based material composite nanomaterial is constructed, and the porous carbon and the iron-based material are added to prepare the composite nanomaterial, so that the forming speed of the aerobic granular sludge is remarkably increased; compared with the composite nano material which is added with an inert material and is not added with the material, the time of the composite nano material prepared by the invention is shortened by 30-50%. The prepared aerobic granular sludge is good in stability after being mature and can resist large impact loads, the quality of treated sewage reaches the first-grade A standard, the treatment capacity on conventional pollutants is improved by 10%-30%, and compared with a conventional aerobic granular sludge technology, the aeration rate and occupied land are saved, and energy consumption is reduced by 10%-30%.

Description

technical field [0001] The invention relates to the technical field of sewage biochemical treatment, in particular to a composite material for accelerating the formation of aerobic granular sludge, a preparation method and an application. Background technique [0002] Biochemical process is the main process in sewage treatment, including: activated sludge method and biofilm method. The specific process of the traditional activated sludge method includes CASS, oxidation ditch, A / O and A2 / O, etc. In 1991, Mishima et al. first discovered Aerobic Granular Sludge (AGS), and reported for the first time the cultivation of AGS using a continuous flow Aerobic Upflow Sludge Blanket (AUSB). Aerobic granular sludge is a kind of biological flocs with self-immobilization of cells. It has the advantages of compact structure, good settling performance, and strong impact resistance. ability, greatly shortening the process of decarbonization, denitrification and dephosphorization of sewage,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/12Y02W10/10
Inventor 李俊峰赫睿宁王健康张虎跃
Owner SHIHEZI UNIVERSITY
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