80results about How to "Improve biodegradation efficiency" patented technology

The invention relates to a repair system and a repair method for underground water polluted by trichloroethylene. The repair system for the underground water polluted by the trichloroethylene consists of an anaerobe reaction wall, an oxygen release reaction wall and an aerobe reaction wall, and is built and assembled according to the order of the anaerobe reaction wall, the oxygen release reaction wall and the aerobe reaction wall. The invention establishes the multifunctional biological permeable reaction wall system for in situ repair of the underground water polluted by the trichloroethylene, wherein an oxygen release agent provides sufficient oxygen for indigenous microorganisms, and three substances, namely residual activated sludge, immobilized trichloroethylene aerobic degrading bacteria and biological enzyme preparation related to trichloroethylene metabolism, are added respectively, so that the microorganism action is strengthened and the trichloroethylene biodegradation efficiency is improved. The invention provides an ideal and high-efficiency biological repair system which has wide application prospect for the underground water polluted by the trichloroethylene through stepped combination of the anaerobe action, the oxygen release action and the aerobe action.

The invention discloses a sodium alginate compound immobilized microbial agent and a preparation method thereof, and the sodium alginate compound immobilized microbial agent solves the problem that an immobilization way of pseudomonas suitable for di-chlorine quinoline acid degradation in the prior art is absent. A carrier culture medium with the pseudomonas and sodium alginate are mixed to obtain a mixture, and the mixture is dropwise added into calcium chloride with concentration being 1-4% to stand for 2-4 hours to prepare a granule; the mass concentration of the sodium alginate is 2-6%; the carrier culture medium comprises an adsorption carrier and an inorganic salt liquid culture medium; a weight ratio of the adsorption carrier to the sodium alginate is (1-3) to 1; and the adsorption carrier consists of corn cob, bamboo charcoal and oil cake in a weight ratio being 1:(1-2):1. According to the invention, the degradation efficiency of bacteria is effectively improved, and the degradation rate of the immobilized microbial agent is much higher than the sum of the physical absorption efficiency of blank spheres and biological degradation efficiency of a free bacterial strain, so that the effect of mutual promotion can be achieved.

The invention discloses a purified terephthalic acid wastewater treatment method, which treats the purified terephthalic acid wastewater through highly efficient catalytic oxidation and dual-membrane bio-reaction tank combined technology to enable the COD of the wastewater to be reduced from 4,000-6,000 mg/L to 100 mg/L below, and enable the terephthalic acid to be reduced from 1,000-2,000 mg/L to 10 mg/L below. The catalytic oxidation takes air and chlorine dioxide as an oxidant, and takes activated carbon as a catalyst; the organic volumetric load of a primary membrane bio-reaction tank reaches 2.85-4.5kg COD/m3.d, while the organic volumetric load of a secondary membrane bio-reaction tank reaches 0.4-0.8kg COD/m3.d.

The invention provides a preparation method of a magnetic microbial carrier. The magnetic microbial carrier has a magnetic crosslinked-structure high-molecular polymer and silicon coating magnetic powder, wherein the high-molecular polymer is polyvinyl formal which is foamed and modified by a composite reinforcing component; and the composite reinforcing component is composed of at least one of activated carbon particle, kieselguhr, kaolin, fly ash and hydrophilic silicon dioxide. The preparation process is simple and easy to operate; and the prepared magnetic microbial carrier can solve the problems that the existing porous carrier can not effectively fix the microbes and a diversified environment can not be easily formed in the carrier.

The invention discloses a hermetia illucens breeding method and a hermetia illucens puparium powder preparation method. The hermetia illucens puparium powder preparation method includes the steps of S1, drying hermetia illucens puparium and then grinding the same into powder; S2, adding powdered hermetia illucens puparium in a sodium hydroxide solution, stirring, separating and filtering; S3, adding the powdered hermetia illucens puparium in a hydrochloric acid solution, stirring, separating and filtering; S4, adding the powdered hermetia illucens puparium in another sodium hydroxide solution,stirring, separating and filtering; S5, drying the powdered hermetia illucens puparium, and then screening particles of pre-treated powder of hermetia illucens puparium. The invention further discloses a hermetia illucens puparium composite material and thin film preparation method, and an antibacterial and anti-mould additive. According to the invention, productivity of chitosan of hermetia illucens puparium can be increased effectively, prepared powdered hermetia illucens puparium can be used for preparation of hermetia illucens puparium high-polymer composite fiber, thin film and the like,and antibacterial effect is improved greatly. Further, a mixture of the powdered hermetia illucens puparium and oyster shell powder can be used as the novel antibacterial anti-mould additive.

The invention discloses a quasi-earth-surface IV-type water standard deep treatment catalyst system, a treatment method and device, and belongs to the field of the environmental protection. The systemcomprises serially connected front end pre-reduction catalyst and secondary deep purification catalyst containing zero-valent iron/zero-valent copper/active carbon compositions. A mass ratio of iron/carbon in the front end pre-reduction catalyst is (2.5-7):1, and a mass ratio of iron/carbon in the secondary deep purification catalyst is (0.8-1.25):1. The method for treating biochemical tail waterby using the above catalyst system is performed through the following treatment units successively: 1) a front end pre-reduction unit; 2) a biological deep oxidation unit: further reducing COD, ammonia nitrogen and phosphorus of the system; 3) a deep sedimentation unit: removing suspended solids SS; and 4) a secondary deep purification unit. The secondary sedimentation tail water treated by the method is capable of removing toxicity of toxic and harmful organic pollutants, and deeply degrading and removing organic matters. The method is an efficient feasible quasi-earth-surface IV-type waterdeep treatment method.

The invention discloses distributed sewage regeneration method, an apparatus and a control system. The distributed sewage regeneration apparatus comprises a tank body, wherein the tank body is provided with a water inlet pipeline and a water production pipeline, the tank body is divided into a hydrolysis acidifying pool, a denitrification pool, an aeration tank, a membrane filter pool, a denitrification dephosphorization region and a regeneration water pool. A partition board is respectively arranged in the hydrolysis acidifying pool and the aeration tank as well as the aeration tank and the membrane filter pool; the water flows to the next water pool through a flowing-guide pipe; and the denitrification dephosphorization region is arranged in the regeneration water pool and partitioned from the middle of the regeneration water pool by a screen with fine hole separating screen. The control system comprises an integrated sewage regenerator, and a water quality testing apparatus and an PLC controller matched with the integrated sewage regenerator, wherein a data signal acquired by the PLC controller realizes remote data acquisition, monitoring and control by means of wireless broadcasting station or an optical communication Ethernet technology or a GPRS technology, thereby the invention has the advantages of compact integral body, convenient installation, easy implementation of remote control, favorable yielding water quality and the like.

The invention relates to a biological integrated treatment device of domestic sewage, comprising a main body container, a sewage intake conduit, an aeration machine and a mud drainage conduit. The inner space of the main body container of the device is fully utilized and separated into two aeration reaction chambers as well as a clarifying chamber, and sewage is led in along the flowing directionof a stream and sequentially treated through the aeration reaction chamber and the clarifying chamber. In addition, the invention also preferably fills the aeration reaction chamber of the equipment with a biological cube vector for improving the biodegradation efficiency of the aeration reaction chamber.

The invention discloses a multi-stage coupled zero-discharge water treatment system for BDP wastewater. The multi-stage coupled zero-discharge water treatment system comprises (1) an air floatation tank, (2) a visible-light catalytic reaction tank, (3) an MBR reaction tank, (4) an ultraviolet photocatalytic reaction tank and (5) an MVR concentration device; the BDP wastewater passes through the air floatation tank to achieve air flotation and separation of unreacted solvent toluene, and suspended solid particles are removed; the wastewater passes through the visible-light catalytic reaction tank, a nano Au/TiO2 catalyst is laid at the bottom of the reaction tank; the wastewater follows through an anaerobic zone and an aerobic zone of the MBR reaction tank; the wastewater passes through theultraviolet photocatalytic reaction tank, and ultraviolet photocatalysts are molecular sieve balls loaded with nanometer TiO2; high-salinity water is concentrated by the MVR concentration device toobtain sodium chloride concentrate and pure water. The multi-process-coupled near-zero-discharge water treatment system developed for the BDP wastewater has the advantages that the advantages of eachmodule are fully developed and the optimal water treatment effect is achieved.

The invention discloses a method for extracting a microbial degradation hydrophobic organic compound from a cloud point system and belongs to the technical field of environmental protection. The method comprises the following steps that A, a nonionic surfactant is adopted for forming the cloud point system at the temperature lower than the temperature of the microbial degradation hydrophobic organic compound; and B, the cloud point system is used as a medium of the microbial degradation hydrophobic organic compound, and the hydrophobic organic compound in the environment is extracted and solubilized into the degradation culture medium so as to degrade the hydrophobic organic compound. The method is applied to the aspect of degrading hydrophobic organic contaminants of the cloud point system, and no negative effects are caused to microbial survival and degradation vitality; and meanwhile, the bioavailability of the hydrophobic organic compound is improved, and environment pollution treatment is facilitated.

The invention discloses a method for acquiring an in-situ bottom mud sample from a bottom mud type fuel cell. A box with an opening at the upper end is fixed on the surface of a hard electrode plate;one surface, close to the electrode plate, of the box uses the electrode plate as a side surface; the hard electrode plate with the box is inserted into the bottom mud, so that the bottom mud immersesthe box; one end of an electrode wire A is connected with the hard electrode plate, the other end of the electrode wire A is connected with a resistor; one end of an electrode wire B is connected with the resistor, and the other end of the electrode wire B is arranged in upper-layer water, and a bottom mud fuel cell is successfully constructed. After the bottom mud fuel cell runs for set time, the hard electrode plate is pulled out, and an in-situ bottom mud sample immersed in the box is obtained. According to the invention, a bottom mud sample recovery device is fixed on the electrode, can be arranged into mud along with the electrode, and collects bottom mud samples around the electrode. The method provided by the invention is used for realize convenient, effective and low-cost acquisition of the bottom mud sample near the electrode of the bottom mud fuel cell, and a method for researching the performance and the ecological environment effect of the bottom mud fuel cell is provided.

The invention discloses a sustained-release composite remediation agent for treating persistent halogenated hydrocarbon in groundwater and a preparation method thereof. The preparation method comprises the following steps: 1) preparing bacterial liquid saturated black carbon; 2) preparing a colloidal solution A containing locust bean gum and an organic carbon source; 3) preparing a colloidal suspension B containing locust bean gum, an organic carbon source, a nano-scale zero-valent metal and the bacterial liquid saturated black carbon; 4) carrying out a crosslinking reaction for 2-6h; and 5) carrying out a delayed crosslinking reaction for 2-6h to obtain a sustained-release composite remediation agent for treating persistent halogenated hydrocarbon in groundwater. The sustained-release composite remediation agent prepared by the method provided by the invention can utilize the good adsorption performance of black carbon, the high-efficiency chemical reducibility of the nano-scale zero-valent metal and the dissimilation iron reduction dehalogenation capability of functional microorganisms to achieve the physical, chemical and biological synergistic remediation effect of persistent halogenated hydrocarbon polluted groundwater, and has the advantages of long action period, stable structure, low cost, environmental friendliness and the like.

The invention discloses a coal chemical industrial wastewater treatment system and a treatment process thereof. The coal chemical industrial wastewater treatment system comprises a raw water tank, an anaerobic tank, an aerobic tank and a membrane tank, which are sequentially connected, wherein coal chemical industrial wastewater sequentially passes through the anaerobic tank, the aerobic tank and the membrane tank after reaching the raw water tank through a lifting pump; an aeration device is arranged in the aerobic tank; a reflux circulation pipeline is arranged between the lower part of the membrane cell and the anaerobic tank; an activated coke addition system is arranged on the anaerobic tank, and a certain amount of activated coke is added into the anaerobic tank. The characteristic of developed mesopores of the activated coke in the wastewater treatment system can be fully utilized to achieve good adsorption effects on difficult-to-degrade organic matters, macromolecular organic matters and the like in the wastewater, and in addition, the activated coke can serve as a colloidal nucleus of activated sludge to improve the performance and water-bearing feature of the sludge and form a good water passage in the surface of a membrane to ensure membrane flux and prevent membrane pollution and plugging; moreover, the activated coke can be regenerated or mixed and hydrated with the sludge for blending combustion, so that the using cost is low.

The invention provides a combined treatment method of high-concentration industrial wastewater. The method can maximally maintain the high-activity sludge, has the advantages of high biodegradation efficiency and higher biodegradability, and achieves the goal of simultaneously decomposing organic matters and sludge. The method can implement synchronous treatment on malodorous gas and wastewater and sufficiently degrade pollutants in the malodorous gas; and the suspended filler greatly enhances the treatment load and the degradability for pollutants. The staggered micro-expansive biological filler bed can thoroughly discharge the waste on the bottom of the filler bed box and ensure no foreign matters to block the pipeline of the equipment in the operation process. The method has the advantages of simple technological conditions, small occupied area and low operation energy consumption. By adopting the higher automation level, the method is convenient for management, has high adaptability, and reduces the environmental pollution.

The invention discloses sewage recycling and regenerating combined equipment which comprises a biochemical reactor, a cylindrical base, a platy base, a crypt machine room, an outer crypt machine room, an annular tank wall, a biological sand filter box, a semicircular partition, a biological activated carbon expanded bed, a water collection tank, SBRs, BAFs and a sludge concentration tank. Biochemical reaction, biological sand filtration and biological activated carbon biochemical degrading processes can be integrated in a combined pressure bearing tower, the combined pressure bearing tower can be assembled with the water collection tank, a jet-driven sequence batch biochemical reactor, a jet oxygenation biological contact filter and the sludge concentration tank to form the combined equipment, and the crypt machine room is arranged below the biochemical reactor, a biological sand filtration box and the biological activated carbon expanded bed. Flow pipelines and pipe fittings are reduced substantially, flow resistance is lowered, biochemical reaction efficiency is improved, land occupation area is compressed, construction cost is lowered, recycling and harmless sewage treatment is realized, recycling of water resources is promoted, and the water resources are saved.

The invention discloses a device and a method for coupling efficient biological treatment and sludge reduction of trademark fabric production wastewater. The device comprises a neutralization tank, an adjusting tank connected with an outlet of the neutralization tank, a facultative tank connected with an outlet of the adjusting tank, a first-stage sedimentation tank connected with an outlet of the facultative tank, an aerobic tank connected with an outlet of the first-stage sedimentation tank, and a second-stage sedimentation tank connected with an outlet of the aerobic tank, and an outlet of the first-stage sedimentation tank and an outlet of the second-stage sedimentation tank are respectively connected with an inlet of the adjusting tank. According to the method disclosed by the invention, FeCl2 is added into inlet water of the adjusting tank, so that the pH of the alkaline wastewater is reduced, trace elements for growth of activated sludge microorganisms are provided, the activity of the microorganisms and the flocculation precipitability of the sludge are improved, and the biodegradation efficiency of the wastewater and the adsorption removal of antimony are improved. According to the method, the biological treatment efficiency of the wastewater can be improved while sludge reduction is realized, the operation is simple, the cost is relatively low, and engineering is easy.

The present invention relates to a safe medicine bottle capable of preventing children from eating by mistake and belongs to the technical field of medicine packaging. The safe medicine bottle capableof preventing children from eating by mistake comprises an outer bottle body, an inner bottle body and an upper cover, wherein the inner bottle body is provided with elasticity regulation holes, a distance between a bottom part of a clamping block locking groove and a bottom part of the inner bottle body is greater than a distance between a bottom part of a clamping block and a bottle part of theouter bottle body, so that when the inner bottle body and the outer bottle body are tightly clamped together, the elasticity regulation holes are in elastic deformation compression state, so that relative shaking between the inner bottle body and the outer bottle body can be effectively prevented, when the inner bottle body and outer bottle body are needed to be opened, single rotation cannot conduct opening, pressing of the inner bottle body is needed, so that the clamping block is separated from the clamping block locking groove, the inner bottle body is pressed and at the same time the inner bottle body and outer bottle body are rotated, so that the medicine bottle can be opened, and children are prevented from opening the medicine bottle and eating medicines in the medicine bottle bymistake. In a word, the safe medicine bottle capable of preventing children from eating by mistake is simple and reasonable in structure, and can effectually prevent the children from eating the medicines in the bottle by mistake.

The invention discloses a method for degrading red tide/water bloom algae by in-situ driving electro-Fenton through a sedimentary microbial fuel cell based on water body bottom mud, and belongs to the technical field of water body pollution treatment. The method comprises the following steps: introducing a carbon felt electrode as an anode into bottom mud of a water body, oxidizing organic matter resources contained in the bottom mud to generate electrons by virtue of an extracellular electron transfer mechanism by virtue of electricigens under a natural anaerobic environment condition, transferring the electrons to a gamma-FeOOH-loaded cathode fixed on the upper surface of the liquid surface of a cathode region through the anode, dissolving ferric iron in water to promote the reaction of dissolved oxygen and ferric iron to generate Fenton reagents H2O2 and Fe<2+>, and decomposing hydrogen peroxide under the catalytic action of ferrous ions to generate hydroxyl free radicals with strong oxidizing property; wherein energy and hydrogen peroxide are not required to be added in the process, and the purpose of removing red tide/water bloom algae in situ can be achieved. Meanwhile, the effect of reducing organic matters in the water body bottom mud can be realized by utilizing anodic reaction.