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134 results about "Biological media" patented technology

Biological media, or bio media, is any inert material that houses beneficial bacteria colonies that break down ammonia. Commercial biological media is available in porous rock or pebble-like material, ceramic cylinders, plastic balls, coarse mesh-like material, or even in slab form.

Multi-stage rainwater biological treatment device

The invention discloses a multi-stage rainwater biological treatment device which comprises a presedimentation pool and a filter pool. A water inlet is formed in the presedimentation pool, a drainage opening is formed in the filter pool, and an overflow baffle structure is arranged between the presedimentation pool and the filter pool. A porous medium filter layer is arranged at the bottom of the filter pool, a biomedium layer is arranged at the top of the porous filter medium layer, a rainwater collecting pipe is buried in the porous filter medium layer, a plurality of rainwater inlets are formed in the pipe wall of the rainwater collecting pipe, one end of the rainwater collecting pipe is connected with a cleaning pipe, the other end of the rainwater collecting pipe is connected with a drainage pipe, and the drainage pipe is connected with the drainage opening. A cover plate is arranged at the top of a multi-stage treatment pool, and provided with a biomedium layer plant seed inlet. The multi-stage rainwater biological treatment device integrates gravity settling, screening, filtering and biological treatment functions to carry out multi-stage treatment on rainwater, after sediment of the rainwater is removed through the presedimentation pool, preliminary purification is carried out on the rainwater through the overflow baffle structure, further filtering and biological treatment are carried out on the rainwater through the biomedium layer, plants and the porous medium filter layer, and therefore pollutants are effectively removed.
Owner:WUHAN MEIHUA YUSHUI ENVIRONMENT CO LTD

Active carbon ceramic with selectivity and preparation method thereof

The invention discloses active carbon ceramic with selectivity. The active carbon ceramic is mainly prepared from the following raw materials in parts by weight: 30-70 parts of sludge, 2-15 parts of kaolin and 1-5 parts of a metal M or an oxide of the metal M. The active carbon ceramic with selectivity has an amorphous Si-C-M structure, and the specific surface area is 400-500 m<2>/g. In the invention, a formula for adding crop hull waste and the like into waste water of the papermaking industry and residual sludge and kaolin of the food industry and a sewage treatment plant is adopted, oxygen-free heating and burning are performed, and porous ceramic carbon particles or powder is activated with microwaves, so that active carbon ceramic with biological selectivity is formed. An obtained ceramic material has the functions of selectively adsorbing benzene, phenol, hydrocarbons, dimethyl sulfide and thioether malodorous substances, and is used for filtering air; ceramic carbon contains a biological medium filter material for providing effective carbon sources and minerals for air filtering and waste water treatment for microorganisms; and the material has the functions of adsorbing phosphate radical ions in water and removing oxygen-enriched components from water.
Owner:漯河微陶净化材料有限公司

Preparation method of adsorbing material used for hexavalent chromium waste water treatment

InactiveCN102500325AStabilization and reuseStabilization governanceOther chemical processesSolid waste disposalCation-exchange capacityPorosity
The invention relates to a preparation method of adsorbing material used for hexavalent chromium waste water treatment. according to the preparation method, household garbage is exploited and utilized to prepare a hexavalent chromium waste water adsorbent, namely the household garbage buried for more than 10 or 15 years in a landfill is excavated and is made into mineralized garbage adsorbing material which is used as adsorbing material used for heavy metal waste water treatment. The stabilized garbage, namely the mineralized garbage, is formed by the household garbage in a landfill, humified and stabilized for a long time, 50-60% of organic fine material can be obtained perform each ton of garbage after being screened, and the mineralized garbage is a biomedium and adsorbing material with good degradation capability and has the characteristics of lower volume weight, high porosity, high organic matter content, high cationic exchange content, various microorganism varieties and the like. The mineralized garbage has good treatment effect in a hexavalent chromium waste water removing process, has the advantages of low cost, simpleness in preparation, high yield and the like, is an environmentally friendly adsorbing material and can achieve double effects of removing hexavalent chromium and recycling garbage.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Transgenic cultivation method of rice dedicated for starch medium

The invention relates to a transgenic cultivation method of rice dedicated for a starch medium. The method comprises the following steps: a mature embro of a rice species with a low content of alpha amylose is taken as an explant and is induced to form calluses; the calluses are subcultured to enter a proliferation period and are preculutured under a dark condition; the calluses are co-cultivated with agrobacterium tumefaciens for transformation and then transferred into a screening culture medium for being screened for three tims; resistant calluses are taken to be induced and differentiated into seedlings, and histochemical stain and molecular identification are performed to resistant plants to identify the differentiated plants containing target genes; the starch gelanitization property of selected transgenic plants is identified, and the transgenic plants which have the starch gelatinized and can form semi-solid gel after being cooled are selected and reserved; and expression stability of the starch gelatinization property of the plants is further evaluated, seed propagation is performed to the excellent plants with a stable starch gelatinization property, and finally dedicated rice for the starch medium is cultivated. The dedicated rice for the starch medium can be taken as a novel biological medium and be widely applied to scientific researches, food, medicine and chemical engineering.
Owner:ZHEJIANG UNIV

Cytomembrane targeting H2S fluorescence probe as well as preparation method and application thereof

The invention discloses a fluorescence probe for hydrogen sulfide detection and a preparation method thereof. The preparation method comprises the following steps: firstly, enabling fuming sulfuric acid to react with 4-amino-1,8-naphthalic anhydride, and enabling an obtained product to be subjected to reflux with cetylamine in a turbid liquid manner in ethyl alcohol as a solvent which hardly dissolves the obtained product, wherein the obtained product is still a turbid liquid; collecting and dissolving solid in water, enabling the solid to react with sodium nitrite in ice-batch, enabling solid, which is separated out, to suspend in methanol, dropwise adding the methanol solution of sodium azide at about a low temperature of 40 DEG C, reacting for hours at the low temperature to obtain 3-(sodium) sulfonate-5-nitrine-1,8-naphthalimide. The probe has a property of being able to carrying out target marking on a cytomembrane surface and characteristic solubility, can enable the probe to be only embedded in cytomembrane instead of striding over the cytomembrane to enter a cell, and can be used for detecting endogenous H2S. The probe per se has relatively weak fluorescence, can selectively react with the H2S in a physiological condition to generate a derivative with relatively strong fluorescence, and is not interfered by a living organism, common matter in the environment and a biological medium background.
Owner:WUHAN UNIV +1

Methods And Compositions For Cellular Imaging And Cancer Cell Detection Using Light Harvesting Conjugated Polymer-Biomolecular Conjugates

The present invention relates to conjugated polyelectrolyte (CPE) or oligoelectrolyte (COE) compounds represented by general structural formulae (I)-(IV), or a salt thereof and methods of using these compounds to detect targets in samples. In particular, the methods include: (1) exposing a sample to a compound of structural formula (I), (II) or (IV) or a salt thereof, allowing the compound to bind to a target and detecting a signal produced by the compound; (2) functionalizing a solid support with a ligand, incubating the sample with a charged CPE or COE and detecting the fluorescence of the solid support and thereby detecting the target or (3) functionalizing a surface of a solid support with a charged ligand, thereby creating a charge on the surface of the solid support; incubating the ligand-functionalized solid support with a sample, whereupon binding of the target, the charge on the surface of the solid support switches; incubating the sample with CPE or COE that has a complementary charge to the charge of the target-bound surface; and detecting the fluorescence of the solid support and thereby detecting the target. The compounds of the present invention possess high photoluminescence quantum yields in biological media, low cytotoxicity, and excellent environmental stability and photostability and can be used in biosensor and bioimaging applications.
Owner:NAT UNIV OF SINGAPORE

Production method of rice seedling dry raising and strengthening biological medium and application thereof

InactiveCN105175159ASolve the transportation of concentrated sulfuric acidFix security issuesCultivating equipmentsSoilless cultivationPotassiumPollution
The invention relates to a production method of rice seedling dry raising and strengthening biological medium and application thereof and belongs to the technical field of rice seedling dry raising. The invention aims at solving the technical problems that a large area of high-quality farmland is destroyed for a reason that a great amount of seedling raising bed soil is grabbed from a farmland during rice seedling dry raising; environmental pollution is caused for a reason that chemical bactericide, herbicide and industrial concentrated sulfuric acid are greatly applied during rice seedling raising. The method provided by the invention comprises the following steps: 1. mixing rice husks with cow dung, adding mixed bacteria liquid, performing outdoor stacking and composting, then adding lactic acid bacteria liquid, performing uniform mixing, and then stacking for 7 to 10 days; 2. adding pure nitrogen, pure phosphorus, pure potassium and pure zinc, and then performing uniform mixing; 3. adding a binding agent, compressing into thin sheet and drying. The application of the rice seedling dry raising and strengthening biological medium comprises the steps of flatly laying each piece of biological medium in a rice seedling raising tray, thoroughly watering the biological medium, then uniformly spreading germinated rice seeds and putting the tray in a plastic greenhouse for rice seedling raising. The biological medium can achieve the same rice seedling strengthening effect as the existing rice seedling strengthening agent, and is safe to the environment and pollution-free.
Owner:HEILONGJIANG ZHONGNONG XINXIN AGRI TECH DEV CO LTD +1
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