105 results about "Zoogloea" patented technology

The invention relates to a PACT (powdered activated carbon treatment) process and an PACT process device. The activated carbon-microbial zoogloea culture method comprises the following steps: selecting activated sludge, and culturing until the activated sludge is mature; and adding powdered activated carbon to ensure that the powdered activated carbon serving as a core is wrapped by microorganisms to form activated carbon-microbial zoogloea floccules, and acclimating, thus increasing the specific gravity of the powdered activated carbon and enhancing the precipitability. In the PACT process device, a sludge return tank is added, and the powdered activated carbon is added into the sludge return tank, so that the powdered activated carbon and the microorganisms can form activated carbon-microbial zoogloeae in the sludge return tank, thereby prolonging the retention time of the powdered activated carbon in a water treatment system; and sludge in the sludge return tank is lifted into a sewage inlet at the front end of an aerobic tank through a lifting pump, so that the sludge and sewage can be better mixed, thereby prolonging the retention time of the powdered activated carbon in the aerobic tank and enhancing the treatment effect. On the basis of prolonging the water retention time of the aerobic tank, the invention does not need to increase the volume of the original aerobic tank, and is small in occupied area and easy to implement.

The invention relates to a microbialactivity enhancing liquid agent for sewage treatment. In the liquid agent, on one hand, a carrier, enzyme and a nutrient substance capable of promoting a catalytic function of sludge zoogloea are combined with one another, so activity of beneficial microorganism in sludge is enhanced and organic pollutants and the like are catalytically decomposed quickly; and on the other hand, the carrier enhances sewage biological treatment capacity by improving a structure of the sludge zoogloea. The liquid agent has the characteristics of convenience of use, small using amount, high-efficient and quick reinforcing ability and can be applied to biological treatment units for domestic sewage and industrial wastewater treatment.

The invention relates to in-situ restoration of pesticide contaminated soil, in particular to a preparation method of microbe immobilized particles for restoring pesticide contaminated soil. Porous carbon is used as a main carrier material, and cellulose, chitosan and sodium alginate are used as auxiliary carriers to realize the purpose of immobilizing the microbes; and the obtained microbe immobilized particles are used for in-situ restoration of the pesticide contaminated soil. The carrier material used in the invention has cheap price, low cost, wide sources, good air permeability and no toxicity to organisms, and can not cause secondary pollution to the soil. The carrier and the immobilizing process thereof can be used for immobilizing multi-bacterium microbes, such as pseudomonas, bacillus, zoogloea, micrococcus and the like, and have certain broad-spectrum applicability; and the bacillus can reach more than 10 billions/gram. Compared with the prior immobilizing method, the invention is characterized by directly sowing the immobilized cell particles into the soil without destroying the original soil structure.

An activated sludge floc analysis method based on an MATLAB comprises the following steps that 1, images are collected; 2, the images are processed, wherein the collected images are read in, the RGB images are converted into gray level images, noise is removed, image binaryzation is carried out, open operation and closed operation are carried out, edge smoothing treatment is carried out, a target zoogloea is determined and marked, filling is carried out, target area grey-scale maps are drawn, the sum of the grey levels of the target area grey-scale maps is calculated, the area of a target area is calculated, the density of the target area is calculated, and the boundary of the target area is acquired; 3, feature information is extracted, wherein the dimensional index of the zoogloea is calculated, the morphological index of the zoogloea is calculated, and the filamentous bacterium index is calculated. According to the method, MATLAB analysis software is adopted as a platform, the image analysis technology is applied to quantitative analysis of activated sludge floc, and the objectivity, reliability and high efficiency of the analysis result are guaranteed.

The invention discloses a method for processing breeding wastewater through multi-biological-phase zoogloea packing. The method includes the following steps of firstly, culturing and domesticating multi-biological-phase zoogloea; secondly, processing livestock breeding wastewater. Through the extra-large cation exchange capacity and microbial affinity of the multi-biological-phase zoogloea packing, the perfect combination of physical adsorption removal and biological degradation removal is achieved, and the method has outstanding denitrification capacity; a stable microbial system is formed, the microorganism concentration is tens times higher than that of an activated sludge process, impact load resistant capacity is strong, and basically no residual sludge exists. Running and operating are quite simple and reliable; compared with a conventional biochemical technology, investment is basically equal to or slightly higher than that of other processes, and running cost is reduced by about 90%.

The invention discloses an activated sludge characteristic determination method based on zoogloea microscopical image analysis and belongs to the technical field of sewage treatment. The activated sludge characteristic determination method comprises the following steps of 1, activated sludge zoogloea image information acquisition, 2, zoogloea image analysis: measuring the diameter of zoogloea in an activated sludge sample, dividing the zoogloea in the activated sludge into microstructure zoogloea, medium structure zoogloea and large structure zoogloea, counting the three types of the zoogloea, calculating a zoogloea volume and calculating a zoogloea characteristic value Z, 3, zoogloea-activated sludge characteristic correlation analysis and construction of relationship functions of the zoogloea characteristic value Z, and SV, SVI, MLSS and MLVSS, and 4, calculation of characteristic parameters of the activated sludge sample to be analyzed. The activated sludge characteristic determination method improves accuracy and instantaneity of activated sludge analysis monitoring, and provides a strong technical support for realizing effective technological parameter adjustment and management in sewage treatment.

The invention provides a sewage disposal agent. A preparation method of the sewage disposal agent comprise the following steps: at first, preparing a solution through hybrid heating of FeSO4.7H2O and a polyvinyl chloride hollow sphere, hydrolysis of ferric salt and adding of deionized water, adding strong base in the solution, regulating the pH value to be 7-9, loading on the polyvinyl chloride hollow sphere to form a ferric oxide hydrate, and drying to obtain the sewage disposal agent. The sewage disposal agent can be preferentially combined with filamentous bacteria in sewage and coat the filamentous bacteria to form a reticular structure floc which is not easy to break; rising water flow during the precipitation process has a filtering effect to adsorb small particles and free bacteria which are intercepted in sewage to make sewage clear. Since the sewage disposal agent can preferentially coat the filamentous bacteria, zoogloea is always at an advantage in the substrate competition, which can improve the sewage disposal efficiency and effectively prevent filamentous bacteria sludge bulking.

The invention provides a method for efficiently extracting an extracellular polymeric substance of activated sludge. The method comprises cleaning, extracting a slime layer by a centrifugal method, extracting a loosely bound extracellular polymeric substance (LB-EPS) by a high-speed centrifugal method and extracting a tightly bound extracellular polymeric substance (TB-EPS) by a formaldehyde-acetic acid potassium acetate heating method. The method has the beneficial effects that the method provided by the invention can be used for simply, conveniently and quickly extracting the extracellular polymeric substance of the activated sludge, moreover, can be used for avoiding the decomposition of protein and polysaccharide, which is caused when a cellular content is dissolved out into an extracting solution and is extracted, and the purity of an extract is furthest guaranteed.

The invention relates to a method for treating sewage by utilizing a grid aeration tank, and relates to a method for the purification treatment of sewage, which aims to solve the problems of low utilization rate of activated sludge on dissolved oxygen and high energy consumption of aeration during running due to lack of grid aeration in sewage treatment by the conventional plug flow activated sludge method. The method comprises the following steps of: 1, allowing sewage to flow in, wherein the flow rate that the sewage flows through holes is 0.1 m/s; 2, performing aeration, namely allowing the sewage to flow through a multi-layer grid arranged in a vortex biochemical pond vertically to form horizontal flow, wherein the retention time of the sewage in the vortex biochemical pond is 2 hours, and air amount blasted from an aerator is in an amount which is 4 times treated water volume; 3, performing the flocculation process for 6 minutes by taking zoogloea as a flocculating agent and the multi-layer grid arranged horizontally as flocculation equipment, wherein the flow rate that mixed solution flows in the multi-layer grid is 0.08 m/s; 4, performing secondary flocculation process for 9 minutes; and 5, separating mud from water, and precipitating for 1.2 hours. The method is used for the sewage treatment.

The aerobic biochemical water purifying agent consists of aluminum sulfate 70-80 wt%, lignin 10-15 wt% and Chinese medicinal stone 10-15 wt%. It has added RE biological additive, no bacteria seed and no enzyme. After being thrown into aerobic biochemical tank, it can culture great amount of robust indigenous zoogloea and result in magic biochemical effect. The present invention has the advantages of small thrown amount, high economic benefit, convenient use, high outgoing water quality, etc.

The invention provides a sewage plant dewatered sludge continuous rapid zero-emission resourceful treatment process which comprises the following steps: transporting dewatered sludge by a stirring tank vehicle; adding biological strains and chemical additives; completely stirring and reacting in the transportation process so as to completely mix composite biological enzyme and the sludge, eliminate protozoa and filamentous bacteria in the sludge, break sludge zoogloea, organic matter particles and microbial cell walls and perform complexing on heavy metal ions; performing hydrolysis and sterilization treatment by a horizontal cylindrical reaction kettle; performing filter-pressing dehydration on the treated sludge to separate mud from water and finally obtaining protein-enriched nutrient soil and amino acid nutrient solution, wherein pathogenic bacteria are inactivated, heavy metal is stabilized, and macromolecular organic matter with high content can be directly prepared into or further processed into safe and high-efficiency solid or liquid organic fertilizer.

The existing PAM (polyacrylamide) dewatered sludge has poor digestion efficiency due to oversize flocs in the anaerobic digestion process, thereby inhibiting the high-molecular organic matrix in the sludge from leaching, prolonging the retention time of the sludge, and providing possibility for degradation of PAM into the monomer acrylamide. The invention provides a recycling harmless system and method for promoting hydrolysis of residual PAM in dewatered sludge and simultaneously producing short-chain fatty acids, belonging to the field of sludge treatment and disposition. The method comprises the following steps: PAM dewatered sludge is subjected to pyrohydrolysis treatment to promote PAM flocs in dewatered sludge to dissociate; alkaline conditioning is carried out to sufficiently destroy the pyrohydrolysis sludge zoogloea floc structure; and the sludge is sent into an anaerobic fermentation tank to produce short-chain fatty acids. The method enhances the PAM hydrolysis rate, lowers the PAM potential toxicity, and implements recycling harmless utilization of PAM dewatered sludge.

Relating to the technical field of surface degreasing of metallic materials, the invention provides a preparation method for a biological component of a biological compound degreaser. The method comprises the steps of: conducting screening, enriching, domestication and culturing respectively to zoogloea, Bacillus mojavensis, bacillus subtilis, Serratia marcescens, then taking each cultured bacterium in proportion so as to prepare the biological component of a biological compound degreaser. The biological component prepared by the selected 4 bacteria in the invention can degrade mixed oil stains of punching oil, cutting oil, lubricating oil, animal oil and a plurality of oil, and can realize rapid and comprehensive degradation as well as excellent degrading effects.

The invention provides a microbial agent. The microbial agent is prepared from the following strain fermentation liquor in parts by weight: 10-50 parts of flavobacterium, 30-60 parts of nitrogen-fixing bacteria and 10-30 parts of zoogloea. The microbial composite inoculant has the advantages that the microbial composite inoculant can replace pesticides to prevent and control soil-borne diseases inthe dry rice growth process and reduce the chemical residues in grains, the toughness and strength of stalk bases can be improved, and the lodging resistance of rice is improved; root system development can be stimulated, root system development is promoted, and root system vitality and ground gripping capacity are improved; automatic nitrogen fixation can be achieved, continuous nitrogen is provided for the whole rice growth period, and abuse of chemical fertilizer is avoided; the yield of drought (water) rice can be increased; and finally, the maturation of dry rice can be advanced by abouttwo weeks, so that the growth period is shortened, and rice enters the market in advance.

A current method for breaking excess sludge has the problems of being high in energy consumption, high in cost and low in breaking rate. The invention provides a device using high-voltage pulsed discharge to break the excess sludge and an application method thereof, or provides a novel device and a technology using a shock wave formed by the instantaneous ultra high temperature and high pressure generated by the high-voltage pulsed discharge to achieve efficient breaking of the excess sludge, and belongs to the technical field of animal vegetable tissue and microorganism crushing. The device is capable of efficiently dispersing zoogloeas in the excess sludge, and ablating and breaking cell walls of germs and macro molecular substances, so that intracellular organic matters in the germs are prompted to flow out, the biodegradability of the excess sludge is greatly improved, and an approach for large-scale efficient treating of the excess sludge is provided. In addition, by changing different technological parameters, the device is applicable to processes such as sterilization and tissue breaking of various industries, and the excellent effect can be delivered by the device.

The invention relates to compound liquid for enhancing sewage biological treatment. The compound liquid mainly strengthens the effect of a coenzyme through a carrier, thereby enhancing the microbial activity of sludge zoogloea and improving the structure of the zoogloea for enhancing the sewage biological treatment capacity at the same time of catalytically decomposing organic pollutants. The compound liquid is characterized by convenient use, small using amount and high efficient and rapid enhancing capacity, thereby being applicable to a biological treatment unit of a sewage treatment plant.

The invention discloses an OUR-based activated sludge bulking early-warning and analyzing system. The OUR-based activated sludge bulking early-warning and analyzing system comprises a sewage filter, asewage pump, an aeration tank, an aeration device, a sealed reaction tank, a separating plate, various biogels, DO electrode probes, a PLC early-warning system and a water outlet, wherein the numberof the DO electrode probes corresponds to the number of the biogels; a water inlet of the sewage filter is connected with a water intake in a connecting pipeline of a pretreatment system and a biochemical pool; the sewage pump is connected with the sewage filter and the aeration tank; a water outlet of the aeration tank is connected with the sealed reaction tank; the biogels include filamentous bacteria biogel, zoogloea biogel, low-temperature biogel, low-pH biogel, low-N biogel, low-P biogel, high-H2S biogel and multi-soluble organic biogel, and the biogels are placed in different separationareas respectively and are detected by means of the DO electrode probes; a water outlet of the sealed reaction tank is connected with the pretreatment system. The OUR-based activated sludge bulking early-warning and analyzing system has the functions of real-time and multi-level warning of sewage and real-time analysis of the causes of sludge bulking.

The invention discloses a premodulation technology for concentrated advanced treatment of sludge. The premodulation technology comprises the following steps that Step1, polyaluminium sulfate is added to the sludge which is dehydrated in advance to allow a water content to be 78-83%; a weight ratio of the polyaluminium sulfate to absolute dry sludge is 0.5-5.0%; the sludge is diluted with water till the water content is 96-99%; and Step 2, a high-speed cutting and crushing agitator is started to operate for 5-15 minutes for agitating and mixing the sludge to accomplish a premodulation task. According to the premodulation technology, when the sludge is diluted, polyaluminium sulfate and sodium tripolyphosphate are used to perform cutting, emulsification, dispersing and flocculation on electriferous sludge zoogloea, fat type substances, protein and the like, and the high-speed cutting and crushing agitator is used for mechanical crushing, so that micelles and floccules are broken; a mixing effect of a supported TiO2 photoelectric catalyst is improved; and subsequent concentrated advanced treatment on the supported TiO2 photoelectric catalyst is facilitated.

The invention discloses a biochemical device for integrally treating exhaust gas and sewage. The biochemical device comprises a reactor tower body, an exhaust gas outlet, an exhaust gas inlet, a spraying device, a circulation liquid inlet, a manhole, structured enzymes floating filler, a settling zone, a circulation liquid outlet, a circulation water pump, a sewage inlet, a water collection zone, a water outlet and a valve. The filler is structured, the upper layer and the lower layer are arranged and installed in a crossed mode, liquid is secondarily and uniformly distributed in the downstream process, and due to the fact that the novel enzyme floating filler is very good in a hydrophilia and adsorbs zoogloea in muddy water very easily, sludge grows easily; due to the fact that intervals among the structured filler are uniform, no large difference exists between gas resistance and liquid resistance, and when reaching a certain thickness, a filler biological film can naturally disengage, and a dynamic balance is reached; the filler blockage problem is eliminated.

The invention discloses a treatment process for domestic sewage. After being pretreated, the sewage is sequentially treated by a primary sedimentation tank, a biological tank and a secondary sedimentation tank, wherein the biological tank comprises an anoxic zone, an anaerobic zone, a second anoxic zone, a second anaerobic zone, a third anoxic zone and an aerobic zone. As low DO, the anaerobic zones and the anoxic zones are arranged alternately, competitive equilibrium of filamentous bacteria and zoogloea is facilitated, the sewage treatment effect is improved, expansion of filamentous bacterium sludge can be prevented, and the cost of sewage treatment is greatly reduced.

The invention discloses a biostimulant used for papermaking wastewater and a preparation method thereof and belongs to the field of papermaking wastewater biochemical treatment. In the invention, ricestraw and filter sludge from sugar refinery are used as raw materials for being decomposed to generate active components, that can promote microorganisms to grow in a relatively bad environment quickly to a large amount and form excellent zoogloea, thereby increasing the degradation efficiency on organic pollutants by the microorganisms; with nickel chloride hexahydrate water solution being a rawmaterial, pollutant degradation is directly carried out to increase efficiency; by compounding xylanase and pectase, during the treatment process, some refractory macromolecular organics can be degraded, thus increasing the treatment effectively of the biochemical system; by adding Ruminococcus flavefaciens and Rhodopseudomonas palustris to the biostimulant, activity competition among bacteria floras in the papermaking wastewater is enhanced, so that a more advantageous papermaking wastewater treatment bacteria can be formed during the growth of the bacteria floras. The biostimulant solves the problem of low efficiency of the papermaking wastewater treatment with biostimulants in the prior art.

The invention discloses a method for preparing a mineral processing agent by using a stirring mill and base coupling, and belongs to the field of resource utilization of municipal sludge. The stirringmill and alkali coupling are adopted to crush residual sludge, centrifugal filtration is performed on the crushed sludge, and causticizing and concentrating are performed so as to obtain a product which is adopted as a flotation agent; a rotary ball milling method is adopted to break walls, on the one hand, a huge fluid shearing force, instantaneous high pressure and an instantaneous impact forcegenerated during operation of a mechanical device are utilized to break the cell walls of every individual bacterium and zoogloea in the residual sludge so as to force organic matter in the cells toflow out and obtain a high wall-breaking rate of the sludge; on the other hand, the technology has low production cost and stable operation, so that the industrial production of the technology is facilitated; through addition of a part of base during the ball milling, on the one hand, the wall-breaking effect of the sludge is increased further through the ball-milling function so that the averagewall-breaking rate of the sludge in the technology can reach 80% or above, on the other hand, the addition amount of base in the subsequent causticizing process can be reduced, so that the operation cost is reduced.

The invention relates to a method for inhibiting sludge bulking in a secondary sedimentation tank. Water flows in from the bottom of the secondary sedimentation tank along a direction from bottom to top and flows out from the periphery of the secondary sedimentation tank; a hollow cylindrical sleeve is arranged around a water inlet pipe; and the bottom end of the sleeve is a bell mouth. Sewage tobe discharged into the secondary sedimentation tank enters from the bottom of the secondary sedimentation tank, flows out from the periphery of the top of the water inlet pipe, then downwardly passesthrough the bell mouth of the sleeve, diffuses towards the outer upper part and the periphery of the sleeve, and is finally discharged from a water outlet in the top of the secondary sedimentation tank; when sludge swells, the sleeve is used for preventing the expanded sludge from floating towards the top and the edges of the secondary sedimentation tank; an inclined bracing frame is arranged at the periphery of the bottom end of the water inlet pipe and provided with an aeration system which is used for alternate exposure to air and chlorine and suppression of sludge bulking; and after aeration is stopped, settled sludge flows out from the bell mouth and is discharged from a sludge discharging pipe. The method provided by the invention employs the secondary sedimentation tank with an improvement structure, eliminates non-filamentous bacteria and toxic substances, utilizes filamentous bacteria as a skeleton to promote the growth of zoogloea on the filamentous bacteria, effectively suppresses sludge bulking and floating and guarantees the clarity of yielding water.