Aerobic biological membrane material, preparation method and application of aerobic biological membrane material in sewage treatment technology

An aerobic biological and membrane material technology, applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc. Problems such as slow film hanging speed, to achieve the effect of good microbial adhesion, accelerated film hanging speed, and fast film hanging speed

Active Publication Date: 2021-06-15
HANGZHOU NAXI ECOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, simple polymer biocarrier materials have poor hydrophilicity and bioadhesion, resulting in slow microbial film formation, reduced sewage treatment efficiency, short service life, and relatively high cost of use.

Method used

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  • Aerobic biological membrane material, preparation method and application of aerobic biological membrane material in sewage treatment technology
  • Aerobic biological membrane material, preparation method and application of aerobic biological membrane material in sewage treatment technology
  • Aerobic biological membrane material, preparation method and application of aerobic biological membrane material in sewage treatment technology

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preparation example Construction

[0035] In a specific implementation scenario, the preparation method of an aerobic biofilm, the specific steps are as follows:

[0036] 1) Reinforcing material preparation: Add 10-50 parts by weight and a concentration of 8-15wt% sodium periodate solution to 5-15 parts by weight of sodium alginate at a rate of 5-8mL / min, and then 200-350r / min speed stirring reaction for 16-24h, then add 5-10 parts by weight of ethylene glycol to the reaction system to terminate the reaction, after 0.5-1h, send it into the freeze dryer. Freeze-dry at -20°C for 30-60 minutes, then grind the dried white product to obtain oxidized sodium alginate powder;

[0037] 2) Preparation of flexible polyurethane foam: 20-30 parts by weight of vinyl polyether polyol, 80-200 parts by weight of polyether polyol, 5-10 parts by weight of silicone oil, 0.5-3 parts by weight of catalyst, 1-30 parts by weight of oxidation Add sodium alginate powder and 0.01-0.35 parts by weight of sulfasuccinic acid into the react...

Embodiment 1

[0049] The preparation method of aerobic biofilm material, concrete steps are as follows:

[0050] 1) Preparation of reinforcing material: Add 36 parts by weight of sodium periodate solution with a concentration of 12.5wt% to 12 parts by weight of sodium alginate at a rate of 7.5mL / min. Stir the reaction at a high speed for 18 hours, then add 10 parts by weight of ethylene glycol to the reaction system to terminate the reaction, put it into a freeze dryer after 0.5 hours, and freeze dry it at -30°C for 45 minutes, and then dry the obtained white The product is ground to obtain oxidized sodium alginate powder;

[0051] 2) Prepare polyurethane flexible foam: 25 parts by weight of vinyl polyoxypropylene polyol, 135 parts by weight of ethylene glycol polyether polyol, 10 parts by weight of silicone oil, 1 part by weight of dibutyltin dilaurate, 1 part by weight of triethylene glycol Base diamine, 15 parts by weight of oxidized sodium alginate powder and 0.25 parts by weight of su...

Embodiment 2

[0055] The preparation method of the aerobic biofilm material, when working, only differs from Example 1 in that: step 3) the reticulation solution used for reticulation treatment is composed as follows: 45wt% NaOH aqueous solution, isopropanol, propylene glycol, di Ethyl pyrophosphamide and fluorenyl moxycarbonyl-lysine are obtained by mixing in a weight ratio of 5.5:3.5:1:0.65:0.25.

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Abstract

The invention provides an aerobic biological membrane material, a preparation method and application of the aerobic biological membrane material in a sewage treatment technology, and relates to the technical field of sewage treatment. The biological membrane material comprises a biological carrier material and a microbial agent or activated sludge fixed inside or on the surface of the carrier material; the biological carrier material comprises a polyurethane foam filler and porous spheres; and microorganisms fixed on the biological carrier material are aerobic bacteria. The biological membrane material provided by the invention has the advantages of high membrane forming speed, high efficiency, short time consumption, large microorganism loading capacity and adsorption capacity, good microorganism adhesive force, short starting time of a biological membrane reactor, high sewage biochemical treatment efficiency and good decontamination and decontamination effects, and can be applied to biochemical treatment technologies of garbage treatment sewage, high-ammonia-nitrogen sewage, high-phosphorus sewage and breeding sewage; and the preparation method can accelerate the biofilm formation speed of the biofilm, prolong the service life of the biofilm, realize sewage reduction and reduce the operation cost of a biological reaction system.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an aerobic biofilm material, a preparation method and its application in sewage treatment technology. Background technique [0002] With the rapid development of my country's social economy and the acceleration of urbanization, the output of urban domestic waste continues to increase, and perishable waste accounts for about half of domestic waste. Perishable garbage, also known as wet garbage or kitchen waste, generally refers to food and kitchen waste produced in the production process of catering operators and unit canteens, as well as perishable garbage produced in family life, mainly including: leftovers Leftovers, vegetable stems and leaves, meat offal, fruit shells and melon skins, etc. Perishable garbage contains a large amount of starch, protein, oil, plant fiber, etc., which are extremely rich in nutrients, which can easily lead to the proliferation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F101/16
CPCC02F3/108C02F3/109C02F2101/16Y02W10/10
Inventor 徐坚麟付源艾亮建
Owner HANGZHOU NAXI ECOLOGICAL TECH CO LTD
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