A mnbr biological filler for nitrogen and phosphorus removal

A bio-filler, nitrogen and phosphorus removal technology, applied in sustainable biological treatment, biological water/sewage treatment, water pollutants, etc. , to achieve the effect of accelerating the formation and adhesion, fast film hanging, and strong impact resistance

Active Publication Date: 2020-06-16
河南海天环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing problems in the prior art, such as clogging of filter material, agglomeration, uneven distribution of water and air, local accumulation of dispersed fillers and blockage of outlet grids, and a kind of MNBR denitrification and phosphorus removal is proposed. biological filler

Method used

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  • A mnbr biological filler for nitrogen and phosphorus removal
  • A mnbr biological filler for nitrogen and phosphorus removal
  • A mnbr biological filler for nitrogen and phosphorus removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-2 As shown, the present invention provides a MNBR biological filler for denitrification and phosphorus removal. The biological filler is cylindrical as a whole; the biological filler includes: an inner ring layer 1, a middle ring layer 2, an outer ring layer 3, and a filler matrix; the filler matrix includes a membrane shell Skeleton 4, tie bars 5, central axis 6; outer ring layer 3 is set on the periphery of the packing matrix; central axis 6 runs through the entire packing matrix up and down; tie bars 5 are supported between the central axis 6 and middle ring layer 2; inner ring layer 1 It is arranged in the middle of the membrane shell skeleton 4; the middle ring layer 2 is arranged on the periphery of the inner ring layer 1;

[0027] The middle ring layer 2 is filled with three-dimensional porous fibers; the outer ring layer 3 is radially distributed filamentary fibers 7; the outer ring layer 3 is provided with 8 groups of filamentary fibers 7; eac...

Embodiment 2

[0041] Biological filler structure is the same as embodiment one

[0042] The filler matrix includes the following raw materials in parts by weight: 45 parts of polypropylene, 32 parts of polyvinyl chloride, 14 parts of polyvinyl alcohol, 5 parts of polyacrylamide, 2 parts of antioxidant, and the antioxidant is 1:0.03:0.6 in mass ratio A composition of molecular sieves, 2,6-di-tert-butyl-p-cresol and boron nitride;

[0043] The preparation method of filler matrix comprises the following steps:

[0044] S1. Molecular sieves, 2,6-di-tert-butyl-p-cresol and boron nitride are jointly added to a fine grinder according to the mass ratio, and fully ground for 0.4h to obtain an antioxidant;

[0045] S2. Add the polypropylene, polyvinyl chloride, polyvinyl alcohol, polyacrylamide and antioxidant of the specific gravity into the high mixer, and mix thoroughly to obtain a mixture;

[0046] S3, adding the mixture into a twin-screw extruder, and extruding it at a temperature of 200°C to ...

Embodiment 3

[0049] Biological filler structure is the same as embodiment one

[0050] The filler matrix includes the following raw materials in parts by weight: 50 parts of polypropylene, 40 parts of polyvinyl chloride, 18 parts of polyvinyl alcohol, 8 parts of polyacrylamide, 3 parts of antioxidant, and the antioxidant is a mass ratio of 1:0.05:0.8 A composition of molecular sieves, 2,6-di-tert-butyl-p-cresol and boron nitride;

[0051] The preparation method of filler matrix comprises the following steps:

[0052] S1. Molecular sieves, 2,6-di-tert-butyl-p-cresol and boron nitride are added to a fine grinder according to the mass ratio, and fully ground for 0.5h to obtain an antioxidant;

[0053] S2. Add the polypropylene, polyvinyl chloride, polyvinyl alcohol, polyacrylamide and antioxidant of the specific gravity into the high mixer, and mix thoroughly to obtain a mixture;

[0054] S3, adding the mixture into a twin-screw extruder, and extruding it at a temperature of 220° C. to form...

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Abstract

The invention belongs to the technical field of nitrogen and phosphorus removing biofillers for sewage treatment, particularly discloses nitrogen and phosphorus removing MNBR biofiller, and solves theproblems of blockage and agglomeration of a filter material, nonuniform water distribution and gas distribution, partial accumulation of a dispersed filler, blockage of a water outlet grille and thelike in the prior art. The nitrogen and phosphorus removing MNBR biofiller adopts an overall cylindrical structure, and comprises an inner ring layer, a middle ring layer, an outer ring layer and a filler matrix, wherein the filler matrix comprises the following raw materials: polypropylene, polyvinyl chloride, polyvinyl alcohol, polyacrylamide and an antioxidant. Due to a special production technology and the special structure, the biofiller provided by the invention gives full play to the advantages of an attached phase and a biological phase, has the advantages of large specific surface area, good hydrophilicity and bioaffinity, high bioactivity, fast film formation, good treatment effect, strong impact resistance, a long service life and the like, and is especially applicable to high-concentration sewage which is difficult to degrade.

Description

technical field [0001] The invention relates to the technical field of nitrogen and phosphorus removal biological filler for sewage treatment, in particular to an MNBR biological filler for nitrogen and phosphorus removal. Background technique [0002] In the wastewater biological treatment process, the number of microbial species, the size of the biomass, and the activity of the microorganisms determine the treatment load and treatment effect, and the biological filler is the core part and plays a key role. The filler is the place where the biofilm lives and the carrier of the biofilm, which affects the growth, reproduction, shedding, shape and spatial structure of microorganisms. main factor. The fillers currently used in biological treatment processes mainly include: fixed fillers (inclined plates, inclined tubes, etc.), suspended fillers (soft, semi-soft, combined, elastic three-dimensional, etc.), dispersed fillers (suspended fillers, MBBR, etc.) Fillers, porous balls...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F3/00C02F3/34C02F101/10C02F101/16
CPCC02F3/00C02F3/107C02F3/108C02F3/109C02F3/34C02F2101/105C02F2101/16Y02W10/10
Inventor 罗运柏管素敏刘利民张奎亮韩韶江王水生何焕杰张付杰郭志刚李润宇郭宝申
Owner 河南海天环境科技有限公司
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