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Manufacturing method of biological stuffing for processing degradation-resistant wastewater

A technology of biological filler and production method, which is applied in the fields of chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem that the growth rate of the film is limited and the microbial biomass cannot be quickly and effectively enriched , affect the processing capacity of the biological reaction tank, etc., to achieve the effect of good effluent water quality, good biocompatibility, and high impact load resistance

Inactive Publication Date: 2013-04-24
SHANGHAI HONESS ENVIRONMENTAL PROTECTION EQUIP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the biological fillers currently used in the market are plastic injection molded parts or pendants woven from chemical fiber yarns. Although these fillers can hang films on the surface (attach microorganisms), due to the lack of affinity of the materials themselves for combining with microorganisms, these fillers The film-hanging speed and the amount of microorganisms (film-hanging) that can be tolerated are limited, and when treating refractory wastewater, the microorganisms cannot be effectively trapped in the bioreaction tank, and the microorganisms are taken out of the bioreaction tank during the wastewater separation process, making the bioreaction tank The proliferation rate of microorganisms is lower than the loss rate, so that the rapid and effective enrichment of microorganisms cannot be achieved in the process of refractory wastewater treatment, which affects the processing capacity of the biological reaction tank

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 100 kg of polypropylene slices HP563S (product of LyondellBasell Industries, Netherlands, with a melt index of 38 g / 10 min), add them to a TCTQ166 spunbonded nonwoven machine, and then add 0.3 kg of γ-polypropylene with a fineness of 200 nm. Calcium glutamate (provided by the School of Life Sciences, East China Normal University), the temperature of the TCTQ166 spunbonded nonwoven combined machine was raised to 130 °C, and the silo of the TCTQ166 spunbonded nonwoven combined machine was mixed and screw melt extruded (screw pressure 85bar, The screw speed is 700rpm) to obtain the melt melt, the melt melt is filtered, metered by the metering pump and extruded through the spinneret hole (3.0cc / rev) to form a melt stream; the melt stream is blown to cool and solidify (into The wind temperature is 20°C and the air inlet pressure is 200Pa) to form as-spun fibers; the as-spun fibers are oiled, wound and air-stretched to form continuous filament fibers; Woven fabric (non-...

Embodiment 2

[0018] Weigh 100 kg of polypropylene chip Z30S (product of Dalian Petrochemical Company, melt index: 34 g / 10 min) and 0.5 kg of γ-polycalcium polyglutamate (provided by Life Science College of East China Normal University) with a fineness of 100 nm, and melt them with Accurate Company of the United States. Spraying production line processing, the mixture passes through the melt blowing (maximum temperature 310°C) die assembly to extrude the molten mixture into a thin stream of melt (output 50g / min, air pressure 14.7Pa), after stretching and cooling, it passes through the roller Type receiving device (receiving distance 10.0cm) forms a net self-adhesive, obtains melt-blown method non-woven fabric, is the biofiller (non-woven fabric weight 100g / m 2 ).

Embodiment 3

[0020] Applications:

[0021] Taking a slurry wastewater treatment project in the photovoltaic industry as an example, the main pollutant in the slurry wastewater in the photovoltaic industry is PEG (polyethylene glycol). PEG is a refractory organic matter. After pretreatment, the CODcr in the influent water is 900mg / L. Under the same conditions such as influent flow rate and total hydraulic retention time, after conventional activated sludge treatment, the effluent CODcr is about 530mg / L, and the removal efficiency is about 40%. If plastic injection molded parts or chemical fiber yarn are added For the biological filler made of thread, the effluent CODcr is about 350mg / L, and the removal efficiency is 60%. If the biological filler of Example 1 or 2 of the present invention is added, the effluent CODcr is about 70mg / L, and the removal efficiency is 92%.

[0022] The actual operation results show that: compared with the existing biological filler, the biological filler of the p...

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PUM

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Abstract

The invention relates to a manufacturing method of biological stuffing for processing degradation-resistant wastewater; the method comprises the following steps of: mixing gamma-calcium glutamate polymer with polypropylene with the dose of 0.3% to 0.5% and then spinning, after non-woven fabric through a spinning-binding method is obtained, hot rolling at 150 DEG C to 160 DEG C or sizing by acupuncture or spunlace technology, so as to obtain the biological stuffing for processing degradation-resistant wastewater; or mixing gamma-calcium glutamate polymer with polypropylene with the dose of 0.3% to 0.5%, then extruding to be melt trickle by using a melt-blow die head assembly, stretching and cooling, forming net and binding automatically by using a cylinder type or plain net type receiving device, so as to obtain melt-blow method non-woven fabric, namely the biological stuffing for processing degradation-resistant wastewater is obtained. The biological stuffing prepared by the manufacturing method for processing degradation-resistant wastewater has the following characteristics of biodegradability, excellent biocompatibility, high water-retaining property, no toxicity and harm to human body, high microorganism bio-film culturing amount, high impact resistance, high purifying efficiency, and the like; can be widely used for processing degradation-resistant wastewater; and compared with the biological stuffing made of plastic injection molded parts or chemical fiber yarns, the purifying efficiency is improved by 30%.

Description

technical field [0001] The invention relates to a method for preparing a biological filler for treating refractory wastewater, in particular to a method for preparing a biological filler with a large film-hanging amount for treating refractory wastewater, and belongs to the technical field of wastewater treatment. Background technique [0002] In the refractory wastewater biological treatment device, the proliferation and domestication speed of microorganisms are relatively slow. In order to provide microorganisms with a large inhabitable surface area and a favorable environment to rapidly increase the microbial population in the bioreactor, the water treatment process is generally implemented by adding biological fillers (microbial carriers) to the bioreactor. Adding biological filler can change the microbial species, biological chain, microbial existence mode and matrix distribution and mass transfer mode in the biological reaction system, and can double the impact load re...

Claims

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Application Information

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IPC IPC(8): C02F3/00
CPCY02W10/40
Inventor 王文标王浩张中桢毛勇先肖霄
Owner SHANGHAI HONESS ENVIRONMENTAL PROTECTION EQUIP TECH CO LTD
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