Filter material for sewage treatment and preparation method for filter material for sewage treatment

A technology of sewage treatment and filter material, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of poor nutrient element removal, poor biofilm adhesion, single function, etc. problems, to achieve the effect of simple and convenient operation, increase the mass transfer rate, and shorten the sewage treatment process

Active Publication Date: 2015-04-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
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Problems solved by technology

The surface of quartz sand and gravel is smooth, and the adhesion of biofilm is poor. It mainly relies on mechanical interception to remove suspended solids in sewage, and its function is relatively simple.
The biological activated carbon filter represented by anthracite not only ensures the turbidity removal effect, but also strengthens the biodegradation function of the filtration process on organic matter, but the removal effect on nutrients is still poor

Method used

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  • Filter material for sewage treatment and preparation method for filter material for sewage treatment
  • Filter material for sewage treatment and preparation method for filter material for sewage treatment
  • Filter material for sewage treatment and preparation method for filter material for sewage treatment

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Embodiment Construction

[0031] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0032] In the research on the preparation method of the filter material of the present invention, the inventors carried out the following test process to determine the optimal control parameters in the filter material preparation method.

[0033] (1) Raw material selection and preparation

[0034] The applicant found through research that deer marsh soil is a rare substance, which is produced in volcanic areas and is formed from the lower volcanic soil. It has high permeability, water storage capacity and air permeability. Kanuma soil is not very uniform in size and has many holes. Therefore, deer marsh soil is selected as one of the raw materials for the preparation of filter media. In the firing process, an appropriate amount of clay is introduced to improve the mechanical strength and relative specific gravity of the filter material. At t...

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Abstract

The invention discloses a filter material for sewage treatment. The filter material is formed by mixing and sintering humic acid, clay and kanuma soil, and sodium hydroxide is further added as a regulator during sintering. The kanuma soil is taken as a main raw material, so that synchronous reinforcement removal of suspended solids and phosphor element can be realized; the filter material has the characteristics of a great specific surface area and strong adsorption removal capacity on phosphor element, and has significance in synchronously removing the suspended solids and the phosphor element in the sewage. The preparation method disclosed by the invention is simple and convenient to operate. According to a service test, the prepared filter material has good total phosphor removal performance while guaranteeing turbidity removal effects of outlet water in secondary treatment of a sewage plant, so that the water quality of the outlet water meets the A-standard requests of primary standards in Chinese Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant GB18918-2002.

Description

technical field [0001] The invention belongs to the technical field of advanced sewage treatment, in particular to a filter material for sewage treatment and a preparation method thereof. Background technique [0002] With the increasing shortage of water resources and the continuous development of sewage recycling technology, the application of filtration in advanced treatment and reuse of sewage is also becoming more and more extensive. The commonly used filter materials in China mainly include quartz sand, gravel and anthracite. The surface of quartz sand and gravel is smooth, and the adhesion of biofilm is poor. It mainly relies on mechanical interception to remove suspended solids in sewage, and its function is relatively simple. The biological activated carbon filter represented by anthracite not only guarantees the turbidity removal effect, but also strengthens the biodegradation function of the filtration process on organic matter, but the removal effect on nutrient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01J20/24B01J20/28B01J20/30C02F1/28C02F1/58
Inventor 王文东张银婷范庆海宋珊卜龙利杨琴
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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