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Preparation method of modified suspended filler for MBBR (moving bed biofilm reactor)

A technology of moving bed biofilm and suspended packing, which is applied in the field of preparation of moving bed biofilm reaction modified suspended packing, and can solve problems such as difficult treatment, secondary pollution, iron-containing sludge, etc.

Inactive Publication Date: 2019-06-21
SOUTH VENTURE TIANJIN TECH DEV CO LTD
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Problems solved by technology

However, due to the addition of excessive iron in the reaction, iron-containing sludge will be produced after the reaction, and improper treatment will cause secondary pollution, and the sludge contains a large amount of iron. It is difficult to treat, and the treatment cost accounts for 60% of the total cost of Fenton's treatment. %above

Method used

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Embodiment Construction

[0018] In the following preferred embodiments, the specific implementation, structure, features and effects provided by the present invention are described in detail below.

[0019] The preparation method for the modified suspension packing of the moving bed biofilm reaction comprises the following steps:

[0020] Step (1), dehydration: put the naturally precipitated Fenton iron oxide sludge into the sludge dewatering equipment for further dehydration, and return the supernatant to the Fenton oxidation reaction tower to obtain iron sludge with a certain solid content;

[0021] Step (2), drying: Put the iron slime with a certain solid content obtained in step (1) into a muffle furnace at 100-110°C for 3-6 hours, and the flow rate during the drying process is 0.1-0.5 The air of L / min, obtains the iron slime of drying, is placed in the desiccator for subsequent use;

[0022] Step (3), roasting: Put the dried iron slime obtained in step (2) into a muffle furnace at 400-700°C for ...

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Abstract

The invention discloses a preparation method of modified suspended filler for an MBBR (moving bed biofilm reactor), which realizes recycling of Fenton iron mud and reduces the sewage treatment cost. The preparation method of the modified suspended filler for the MBBR comprises steps of dewatering, drying, roasting, crushing and injection molding. The invention aims to provide the preparation method of the modified suspended filler for the MBBR and a product prepared with the preparation method. The iron mud is taken as a raw material of the modified biological filler, so that the modified filler has certain magnesium and charge property, accordingly, the microbial biofilm formation speed, the hydrophilcity and the biological affinity are greatly improved, iron in the iron mud can be recycled, and the purpose of treating waste with waste is achieved.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a preparation method for a moving bed biofilm reaction modified suspension filler. Background technique [0002] With the continuous development of industry, more and more national attention has been paid to the problem of water pollution, which has led to stricter and stricter sewage discharge standards. Therefore, the Moving Bed Biofilm Reactor (MBBR for short) is widely concerned as a new type of biofilm reactor with many significant advantages. However, there is one material that is very important in this process and that is the suspended biofiller. As the carrier of microbial attachment and growth—biological filler is the core of membrane reactor water treatment technology, and its performance directly affects the growth, reproduction and activity of microorganisms, which in turn affects the efficiency of sewage treatment. The commonly used filler materials are mainly ordin...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F1/48
Inventor 曹海燕李光宇沈楠
Owner SOUTH VENTURE TIANJIN TECH DEV CO LTD
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