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A bionic fluidized carrier for wastewater treatment biological fluidized bed and its preparation method and application

A biological fluidized bed, wastewater treatment technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of poor hydrophilicity and biological affinity, anaerobic fluidized bed Problems such as difficulty in start-up and small amount of microorganisms loaded on the carrier can shorten the film hanging time, improve rigidity and high biological affinity.

Active Publication Date: 2018-06-08
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved: the present invention aims at the long start-up time of the traditional biological fluidized bed, especially the difficult start-up of the anaerobic fluidized bed, the poor biocompatibility of the carrier, the poor hydrophilicity and biological affinity, the long film-hanging time, and the microbial load of the carrier Few and other disadvantages, a bionic fluidized carrier for wastewater treatment biological fluidized bed and its preparation method and application are provided

Method used

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  • A bionic fluidized carrier for wastewater treatment biological fluidized bed and its preparation method and application
  • A bionic fluidized carrier for wastewater treatment biological fluidized bed and its preparation method and application
  • A bionic fluidized carrier for wastewater treatment biological fluidized bed and its preparation method and application

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Embodiment 1

[0024] Such as figure 1 Shown is a schematic structural view of a biological fluidized bed according to the present invention, which includes a three-phase separator 2, an inner cylinder 3, an outer cylinder 5, a water distributor 13 and a raw water tank 9; wherein the three-phase The separator 2 is arranged above the outer cylinder 5, the inner cylinder 3 is arranged inside the outer cylinder 5, the water distributor 13 is arranged under the outer cylinder 5, and is connected with the outer cylinder 5 through the flange 6; the three-phase separation The top of the device 2 is provided with a biogas outlet 7, and the upper part of the side wall of the three-phase separator 2 is respectively provided with a sample outlet 1 and a water outlet 11, wherein the height of the water outlet 11 is lower than that of the sample outlet 1; There is a sample inlet 4, which communicates with the raw water tank 9 through a sample pump 8; a water inlet 12 is provided below the water distribut...

Embodiment 2

[0027] A bionic fluidized carrier for a biological fluidized bed for wastewater treatment, which is composed of the following components according to the mass fraction ratio: high molecular polymer 85%, animal waste 11%, trace elements 3%, inorganic filler 1%; bionic carrier The added amount is 50% of the effective volume of the biological fluidized bed. Among them, the high molecular polymer is polypropylene, the animal waste is bone glue and bone meal, and the weight ratio of bone glue and bone meal is 1:1; trace elements are zinc sulfate, manganese chloride, ferrous sulfate, copper chloride, cobalt chloride, Nickel sulfate; the inorganic filler is calcium carbonate.

[0028] The preparation method is as follows:

[0029] (1) Raw materials are batched according to the mass fraction ratio, premixed and coarsely dispersed in a mixer, the stirring speed is 100 rpm, and the stirring time is 60 minutes;

[0030] (2) Add the premixed raw materials in step (1) into a ball mill fo...

Embodiment 3

[0037] A bionic fluidized carrier for a biological fluidized bed for wastewater treatment, which is composed of the following components according to the mass fraction ratio: high molecular polymer 90%, animal waste 6%, trace elements 3%, inorganic filler 1%; bionic carrier The added amount is 60% of the effective volume of the biological fluidized bed. Among them, the high molecular polymer is polyethylene, the animal waste is bone glue, the trace elements are zinc sulfate, manganese chloride, ferrous sulfate, copper chloride, cobalt chloride, nickel sulfate; the inorganic filler is wollastonite.

[0038] The preparation method is as follows:

[0039] (1) The raw materials are batched according to the mass fraction ratio, and they are premixed and coarsely dispersed in a mixer, the stirring speed is 120 rpm, and the stirring time is 45 minutes;

[0040] (2) adding the premixed raw materials in step (1) into a ball mill for fine dispersion, the ball mill rotating speed is 60 ...

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Abstract

The invention discloses a biomimetic fluidized carrier used for a biological fluidized bed for wastewater treatment, a preparing method of the carrier and applications of the carrier. The carrier comprises 45-90% by mass of polymer, 5-50% by mass of animal offcuts, 1-10% by mass of trace elements and 1-10% by mass of an inorganic filler. The carrier is high in hydrophilicity and biological affinity, high in surface mass transfer efficiency, convenient for microbe biofilm formation and growth and high in biofilm formation amount. The biofilm formation time of microbe is shortened. The biological sewage treatment efficiency is increased. Density of the carrier is adjustable, so that the carrier is easier in fluidization and energy consumption is saved. By addition of the inorganic filler, the cost is lowered, rigidity of the carrier is improved and the overall performance of the carrier is improved.

Description

technical field [0001] The invention relates to the field of organic chemical industrial wastewater treatment, in particular to a bionic fluidized carrier for a biological fluidized bed for wastewater treatment and a preparation method and application thereof. Background technique [0002] With the rapid development of my country's society and economy, the problem of environmental pollution is becoming more and more serious, the amount of sewage discharge is increasing year by year, and the composition of harmful substances in sewage is becoming more and more complex. Traditional sewage bioreactors have slow mass transfer, low efficiency, and poor effluent quality. Good, low load, poor impact load and other shortcomings. The biological fluidized bed reactor (biological fluidized bedreactor, FBBR) is a high-efficiency biological treatment process for organic sewage. technology. The most prominent features of the biological fluidized bed reactor are fast mass transfer, short ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F101/30
CPCC02F3/2806C02F3/2833C02F2101/30Y02E50/30
Inventor 陈英文赵金龙李凯李林沈树宝
Owner NANJING TECH UNIV
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