9 results about "Biofilm" patented technology

The invention provides a high-adsorption polylactic acid composite biofilm carrier material, which is prepared from the following raw materials by weight: 8-10 parts of diatomaceous earth, 14-18 partsof polylactic acid, 0.3-0.4 part of graphene oxide, 4-6 parts of cassava starch, 2-3 parts of gum arabic, 40-50 parts of polypropylene, 8-12 parts of chitosan, 2-4 parts of nanometer carbon sol, 3-5parts of lignocellulose, 1-2 parts of bentonite, 1-2 parts of hexadecyl trimethyl ammonium bromide, 0.5-1.5 parts of silica sol, 0.3-0.5 part of sodium humate, and 15-20 parts of water. The inventionfurther provides a preparation method of the high-adsorption polylactic acid composite biofilm carrier material. According to the present invention, the high-adsorption polylactic acid composite biofilm carrier material has advantages of light weight, large surface activation area, rich carbon source and low influence of environmental temperature change on adsorption performance; and the filler prepared from the high-adsorption polylactic acid composite biofilm carrier material has advantages of good fluidity, less agglomeration, good adsorption performance, corrosion resistance, duration, high efficiency and the like so as to further improve the water purification effect.

The invention discloses a treatment method of a contaminated water body by promoting degrading bacteria to be fixedly planted at a biological film. The method comprises the following steps of: screening bridging bacteria and degrading bacteria with wide conglutination capability, and respectively collecting bacteria bodies; preparing bacterium suspension in which OD660=1 by a liquid which contains CaCl2.2H2O and MgSO4.7H2O and is used for promoting the conglutination; and adding the mixed bacterium suspension of the bridging bacteria and the degrading bacteria into a biofilm process waste water treatment pond containing toxic and difficult-degradable organic matters, or a water area polluted by the toxic and difficult-degradable organic matters. Aiming at the phenomenon that the waster water or the contaminated water body normally contains various difficult-degradable organic matters, the bacteria which are wide in conglutination capability are adopted to be mixed with various high-efficiency degrading bacteria, so that the conglutination function among various functional bacteria can be further enhanced due to the improvement of a bacteria cultivating condition or a conglutination condition, various degrading bacteria can be promoted to be immobilized at the biological film, the loss of the degrading bacteria can be reduced, the stability can be remained, and the treatment effect of the contaminated water body can be effectively improved.

The invention relates to a method for eliminating a biofilm of microorganism preexisting on an inert surface, characterized in that one subjects said biofilm to a cocktail of microorganisms comprising at least strains said to be “swimming” able to cross said biofilm in the plane and in the thickness, and one subjects said biofilm to at least one antimicrobial product directed against at least one microorganism of the biofilm to be eliminated.

The invention provides a novel method for controlling and/or treating the growth of biofilms by promoting growth of the periphery cells and/or increasing nutrient consumption by the periphery cells so that the growth of peripheral cells is not only independent from nutrients (e.g., ammonium) provided by the interior cells of the biofilms, but also causes interior cells starved to death. The accessible peripheral cells are then treated and/or eliminated by biofilm control substance of antibiotics or toxic chemicals. Therefore, the invention method controls and eliminates both peripheral and interior cells within biofilms. The invention method can be used in various industries, such as clinical and dental medicine and medical equipment, food and oil industry, and water supply systems.

The invention provides distributed sewage treatment equipment applying biological agent and a treatment process thereof. The distributed sewage treatment equipment comprises a septic tank, a grating tank, a hydrolysis regulating tank, a biofilm reactor and a disinfection tank, domestic sewage enters the septic tank firstly, and the sewage in the septic tank is conveyed into the grating tank through a pipeline, wherein the grating tank is connected with a hydrolysis regulating tank through a pipeline, the hydrolysis regulating tank is connected with a bio-membrane reactor, the sewage treated bythe bio-membrane reactor is sent into a disinfection tank, and then the treated sewage is sent out through the discharge of the disinfection tank. Various fungus products are added in the domestic sewage treatment process, so that the biodegradability of water quality is improved, and the growth environment of microorganisms is improved,microbial species and biomass of the system are increased, and biochemical efficiency is improved,and the nitrification and denitrification capabilities of the system can be improved, and the ammonia nitrogen and total nitrogen removal efficiency is improved.

The invention herein describes a novel photobioreactor (PBR) system for culturing algae. The PBR system utilizes vertical transparent tubes that can be cyclically filled with an algae culture. The vertical tubes further feature pipe pigs deployed therein to disrupt formation of biofilm on the inner walls during the cyclic filling and emptying of the cultures.

The invention provides ceramic membrane sewage treatment equipment and method based on domestication of active microorganisms. The equipment comprises a reaction tank which comprises a water inlet anda water outlet; a first membrane assembly, of which a ceramic membrane is communicated with a gas storage tank through a gas pipeline and is filled with microorganism culture gas in the gas storage tank, wherein a biological membrane layer is formed in an activated sludge environment, and the surface of the ceramic membrane of the first membrane assembly is covered with the biological membrane layer; and a second membrane assembly which is located at the downstream of the first membrane assembly, and the second membrane assembly is communicated with the water outlet through a water outlet pipeline. According to the invention, the problem of uncontrollable microbial population in the existing MBR technology is solved, and the problems of low water production rate and frequent replacement of the membrane assembly caused by easy pollution of suspended activated sludge to the membrane assembly in the existing MBR can be solved as the immobilized microorganisms are adopted to treat wastewater and have low sludge yield and good settling performance.

The invention discloses a composite ecological floating bed suspended with a biofilm carrier, the composite ecological floating bed comprises a floating bed frame and the biofilm carrier suspended below the floating bed frame, the floating bed frame is formed by splicing a rectangular floating plate and a plurality of plant floating plates arranged in the rectangular floating plate, plant groovesare arranged on the plant floating plates, and aquatic plants are placed in the plant grooves; the biofilm carrier is distributed in the circumferential direction of the plant floating plates, and root systems of the aquatic plants extend downwards to the biofilm carrier. Plant root system purification and microorganism purification are carried out synchronously, plant root systems can extend downwards to the upper portion of the biofilm carrier to form a purification section with the plant root systems and a biofilm acting together, a better purification effect is achieved, all the componentsare detachably connected, and materials are greatly saved through the arrangement of hanging buckles and pin shafts. The risk resistance of the floating bed is improved, and the economic cost is reduced.