Application of hollow glass bead biological membrane carrier in wastewater treatment

A biofilm carrier, glass microbead technology, applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc. problems, to achieve the effect of easy microbial adhesion, stable chemical properties, and high mechanical strength

Active Publication Date: 2012-08-22
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these materials have their own characteristics, they have many disadvantages when used as waste water treatment carriers, such as high cost, complicated processing technology, difficult disposal of solid waste formed after waste fillers are used, and some are prone to secondary pollution, which endangers the environment.

Method used

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  • Application of hollow glass bead biological membrane carrier in wastewater treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Hanging film of biofilm reactor

[0031] The activated sludge in the airlift reactor operated stably in the laboratory was respectively inoculated into two aerobic biofilm reactors R with the same configuration and reactor size. 1 , R 2 ( figure 1 shown), where R 1 , R 2 The same amount of activated sludge inoculated in the same, the inoculated sludge volume is 1.5L, where R 1 The polyethersulfone hollow fiber membrane is added to the aerobic biofilm reactor as a biofilm carrier (it is fibrous in shape and is a supporting membrane, and its physical parameters are: inner diameter 0.4mm, outer diameter 0.8mm, membrane pore diameter 0.2×10 -3 mm, porosity 80%, total membrane area 0.36m 2 , manufacturer: provided by Shanghai Bingqi Chemical Technology Co., Ltd.); R 2 The carrier added in the reactor is the hollow glass microsphere (the parameter conditions are: a single mass of about 0.001g, a particle diameter of 0.01-0.075mm, and a density of 180-190Kg·m -3 , M...

Embodiment 2

[0037] The actual domestic sewage is used as the feed water of the biofilm reactor, and the parameters of the feed water are: (COD600mg / L, SS 150mg / L, pH 6-8), and the hollow glass microspheres are added to the biofilm reactor, and the biofilm The configuration of the reactor and the operation of the film-hanging process are the same as in Example 1. After the film-hanging is successful, the aeration rate is 0.8-1.0m 3 / h, (can also be adjusted according to actual needs, the adjustment range is based on the relationship between the influent flow rate of 1: (7.7 ~ 8.5) m 3 / h, the hydraulic retention time is 5h, and the biofilm reactor is operated, because the biofilm is easy to attach to the hollow glass beads, and because the hollow glass beads are light and easy to form a turbulent fluidization state with the downward flow and rising gas, The formation speed of the biofilm and the start-up time of the reactor are accelerated, so that the biomass retained in the reactor is la...

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Abstract

The invention discloses application of a hollow glass bead biological membrane carrier in wastewater treatment, which includes that a hollow glass bead is added in a biological membrane reactor for inoculating active sludge, the biological membrane reactor is started to intake water and aerate so as to enable the hollow glass bead to contact with microorganisms in the biological membrane reactor fully, a biological membrane is generated on the surface of the hollow glass bead, and the biological membrane is used for perform wastewater treatment. The weight of a single hollow glass bead is less than 0.001g, grain size of the single hollow glass bead is 0.01-0.075mm, and density of the single hollow glass bead is 180-190Kg.m-3. The hollow glass bead biological membrane carrier is light in weight, small in grain size and density, stable in chemical property and high in mechanical strength, has good sealing performance, wind pressure resistance and corrosion resistance, is not easy to break and good in mobility, can form a turbulence state with the microorganisms, simultaneously can resist strong hydraulic shear action, facilitates the wastewater treatment, and accelerates forming speed of the biological membrane and starting time of the reactor.

Description

(1) Technical field [0001] The invention relates to the application of a hollow glass microsphere, in particular to the application of a hollow glass microsphere biofilm carrier in wastewater treatment. (2) Background technology [0002] With the gradual maturity of wastewater biological treatment technology, biofilm treatment method, activated sludge method and other treatment methods are widely used in wastewater treatment. Among them, the biofilm wastewater treatment method is a kind of sewage aerobic biological treatment technology juxtaposed with the activated sludge method. The essence of this treatment method is to make microorganisms such as bacteria and fungi, micro-animals such as protozoa and metazoans attach to fillers or some carriers to grow and breed, and form a film-like biological sludge-biofilm on it. The most important thing in biofilm wastewater treatment is the formation and renewal of biofilm. [0003] With the continuous development of biofilm techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 金仁村张倩倩俞津津邢保山
Owner HANGZHOU NORMAL UNIVERSITY
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