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Nutrition slow-release type biofiller for water treatment and its preparation method

A biological filler, slow-release technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, added substance water/sewage treatment, etc. Microbial nutritional imbalance and other problems, to achieve the effect of promoting adhesion and film formation, easy and tight adhesion growth, and promoting degradation

Inactive Publication Date: 2007-07-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a nutrient slow-release biological filler for strengthening the biological treatment of toxic wastewater. The filler not only has a rough surface, a large specific surface area, and strong hydrophilicity, but also can attach a high number of highly active microorganisms. It has the function of slow release of nutrients, which can supplement and balance the nutrients required by the microorganisms on the surface of the filler, improve the activity of microorganisms, and solve the problem of slow start-up rate of film formation and recovery performance after being affected by external factors in the process of aerobic biodegradation of toxic wastewater biofilms Difficulties and shortcomings such as poor, unstable microbial treatment effect, and microbial nutritional imbalance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take by weighing 15 grams of white mineral oil, make it wet the mixture of 30 gram gac and 15 gram bagasse, then mix the wetted gac and bagasse with 20 gram starch in a blender, then weigh 20 gram white mineral oil 3100 grams of polyethylene particles as a polymer base material are wetted, added to a mixer and stirred evenly with the aforementioned mixture, and then the mixed mixture is moved into the mixing hopper of the injection molding machine for injection molding. 60 nutrient slow-release biological fillers for water treatment were prepared, and the specific gravity of the filler was 0.94g / cm after testing 3 . The nutrient slow-release biological filler for water treatment and the traditional polyethylene filler prepared in this example were tested for contact angle and water content respectively. The test results showed that the contact angle of the traditional polyethylene filler was 86°, while that of the present embodiment The contact angle of the prepared nu...

Embodiment 2

[0031] Take by weighing 25 grams of white mineral oil, 20 grams of vegetable oil, make it moisten the mixture of 120 grams of activated carbon and 80 grams of sawdust, then mix the moistened activated carbon and sawdust with 50 grams of hydroxyapatite, 50 grams of starch, Mix 20 grams of polyvinyl alcohol, then weigh 30 grams of white mineral oil and 30 grams of vegetable oil to wet 3100 grams of polyethylene particles as a polymer base material, add them to a mixer and stir them evenly with the aforementioned mixture, and then put the mixed The mixture is moved into the mixing hopper of the injection molding machine and injection molded. 65 nutrient slow-release biological fillers for water treatment were prepared, and the specific gravity of the filler was 0.93g / cm after testing 3 . The water treatment nutrient slow-release biological filler and the traditional polyethylene filler prepared in this example were tested for contact angle and water content respectively. The tes...

Embodiment 3

[0033] Weigh 50 grams of white mineral oil, make it wet with a mixture of 80 grams of bagasse and 30 grams of diatomaceous earth, and then mix it with 60 grams of magnetic powder, 60 grams of starch, 50 grams of hydroxyapatite, 5 grams of chlorine Mix ferric iron and 10 grams of dipotassium hydrogen phosphate; then weigh 50 grams of white mineral oil, moisten 3400 grams of polypropylene particle base material, add it to the mixer and stir it with the aforementioned mixture, and then mix the mixed mixture Move it into the mixing hopper of the injection molding machine for injection molding. The specific gravity of the prepared filler (70) is about 0.95g / cm 3 , put a plurality of nutrient slow-release fillers of the same shape and specifications and traditional polypropylene fillers in the aerobic biological treatment system of phenol wastewater under the same conditions, and carry out a film-hanging comparison test (rapid sludge discharge method), every 24 hours Change the wat...

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Abstract

This invention discloses a nourishing slow-released type organic bulking agent for processing water and its preparation. This bulking agent includes 60-100 parts of high polymer basis material, 1-15 parts of nutrient substance, 1-10 parts of slow-releasing control substance, and 1-10 parts of dispersing lubricant. When prepare, lubricate slow-releasing control substance with 0.5-3 parts of dispersing lubricant; lubricate high polymer basis material with remaining dispersing lubricant, add in stirring machine, mix with above mixture, mix uniformly, transfer mixture into stirring dipper of plastic injection molding machine, extrude and form by bulking agent tooting. Organic bulking agent prepared by this invention slow-releases nutrient substance that is required for microbes forming biofilm. It has characteristics of fast forming biofilm, more microbial biomass, and activity. It is especially suitable for oxygen degrading process of waste water that contains difficult degraded toxic pollutant.

Description

technical field [0001] The invention relates to a biological filler for industrial wastewater or domestic sewage, in particular to a nutrient slow-release biological filler for water treatment and a preparation method thereof. Background technique [0002] The enhanced biological treatment of refractory toxic pollutants has always been a hot and difficult point in the field of environmental protection. An effective method to strengthen the biological treatment of toxic and refractory substances is co-metabolism, that is, adding substances that are easily degraded by microorganisms (primary substrate) to toxic and refractory wastewater to promote or initiate the degradation of refractory substances (secondary substrates). degraded and introduced into the metabolic cycle. However, this co-metabolic enhancement also has certain limitations. The performance is that since the primary matrix is ​​directly added to the water body, most of the microorganisms in the biofilm water t...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F1/68
CPCY02W10/10
Inventor 程江孔丝纺肖立军文秀芳皮丕辉杨卓如戴松林海景
Owner SOUTH CHINA UNIV OF TECH
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