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MBBR slow release carbon filler and preparation method thereof

A slow-release carbon and light calcium carbonate technology, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problem of increasing the hydraulic retention time of nitrification and denitrification treatment units and reducing sewage treatment. Factory automation, intelligence level, MBBR process loses the effect of sewage treatment, etc., to achieve the effect of shortening the film hanging time, strong biological adhesion, and fast film hanging speed

Inactive Publication Date: 2018-09-14
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] MBBR is a newly developed sewage treatment process in recent years. This process can purify sewage through the metabolism of anaerobic microorganisms and aerobic microorganisms. It is a relatively cost-effective treatment method. To achieve the effect of denitrification and phosphorus removal, it is necessary to increase the hydraulic retention time of the nitrification and denitrification treatment units. Long-term retention will lead to a serious shortage of biologically usable carbon required for microbial metabolism, which often leads to sludge bulking and the loss of sewage treatment in the MBBR process. Effect
At present, the microbial fillers used in MBBR usually do not have the function of slow release of carbon, and additional methanol or natural biomass materials are required to provide carbon sources for microbial metabolism. The continuous addition of carbon sources not only increases the treatment cost of sewage treatment, but also requires special personnel. maintenance, reducing the degree of automation and intelligence of the sewage treatment plant

Method used

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  • MBBR slow release carbon filler and preparation method thereof
  • MBBR slow release carbon filler and preparation method thereof
  • MBBR slow release carbon filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: MBBR slow-release carbon filler, calculated in parts by mass, includes 40 parts of polyhydroxyalkanoate, 30 parts of polylactic acid, 6 parts of light calcium carbonate, 15 parts of natural biomass walnut sand, and 4 parts of maleic anhydride , 0.5 parts of ferrous sulfate, 0.3 parts of magnesium chloride, 0.8 parts of composite coupling agent, 0.8 parts of white oil, 2.5 parts of polyvinyl alcohol, 1 part of stearic acid and 1 part of calcium chloride are the raw materials for preparation; natural biomass material walnut sand It needs to be pulverized with an ultra-fine pulverizer in advance, and the mesh size after pulverization is greater than 320 mesh.

[0016] The preparation method of MBBR slow-release carbon filler, each component is taken by above-mentioned mass parts, comprises the steps:

[0017] 1) Dissolve the above components in 2000ml of tetrahydrofuran and ethanol mixed solution (the mixed solution is composed of 99.9% tetrahydrofuran and absol...

Embodiment 2

[0020] Embodiment 2: MBBR slow-release carbon filler, calculated in parts by mass, includes 39 parts of polyhydroxyalkanoate, 29 parts of polylactic acid, 12 parts of light calcium carbonate, 12 parts of natural biomass walnut sand, and 4 parts of maleic anhydride , 0.4 parts of ferrous sulfate, 0.25 parts of magnesium chloride, 0.65 parts of composite coupling agent, 0.6 parts of white oil, 2.5 parts of polyvinyl alcohol, 1 part of stearic acid and 1 part of calcium chloride are the raw materials for preparation; natural biomass material walnut sand It needs to be pulverized with an ultra-fine pulverizer in advance, and the mesh size after pulverization is greater than 320 mesh.

[0021] The preparation method is the same as in Example 1.

Embodiment 3

[0022] Embodiment 3: MBBR slow-release carbon filler, calculated in parts by mass, includes 37 parts of polyhydroxyalkanoate, 28 parts of polylactic acid, 10 parts of light calcium carbonate, 18 parts of natural biomass walnut sand, and 3 parts of maleic anhydride , 0.3 parts of ferrous sulfate, 0.2 parts of magnesium chloride, 0.5 parts of composite coupling agent, 0.5 parts of white oil, 1.5 parts of polyvinyl alcohol, 0.5 parts of stearic acid and 0.5 parts of calcium chloride are the raw materials for preparation; natural biomass material walnut sand It needs to be pulverized with an ultra-fine pulverizer in advance, and the mesh size after pulverization is greater than 320 mesh.

[0023] The preparation method is the same as in Example 1.

[0024] Embodiment 3: MBBR slow-release carbon filler, calculated in parts by mass, includes 44 parts of polyhydroxyalkanoate, 30 parts of polylactic acid, 8 parts of light calcium carbonate, 6 parts of natural biomass walnut sand, and ...

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Abstract

The invention discloses an MBBR slow release carbon filler and a preparation method thereof. The product provided by the invention has the advantages of fast biofilm formation speed, strong biologicaladhesion, difficult falling and high treatment efficiency, and is especially used for treatment of domestic sewage and industrial wastewater with high BOD5 content. The biological filler provided bythe invention has strong hydrophilicity and biological affinity, and the filler itself contains a slow-release carbon source, can provide the carbon source needed for biological metabolism, and the porous walnut sand material is beneficial to microbial growth, shortening of the biofilm formation time and improvement of the microbial treatment efficiency. With an ammonia nitrogen removal rate of greater than 92% and COD removal efficiency all exceeding 83%, compared with the existing filler, the MBBR slow release carbon filler provided by the invention can better treat biodegradable sewage.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an MBBR slow-release carbon filler and a preparation method thereof. Background technique [0002] MBBR is a newly developed sewage treatment process in recent years. This process can purify sewage through the metabolism of anaerobic microorganisms and aerobic microorganisms. It is a relatively cost-effective treatment method. To achieve the effect of nitrogen and phosphorus removal, it is necessary to increase the hydraulic retention time of the nitrification and denitrification treatment units. Long-term retention will lead to a serious shortage of biologically usable carbon required for microbial metabolism, which often leads to sludge bulking and the loss of sewage treatment in the MBBR process. Effect. At present, the microbial fillers used in MBBR usually do not have the function of slow release of carbon, and additional methanol or natural biomass materials are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/16
CPCC02F3/34C02F2101/16
Inventor 高成涛段明宇秦舒浩张凯舟张敏敏
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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