66results about How to "Improve the effect of biological treatment" patented technology

The invention discloses a biological sewage reaction system and an upgrading and expanding method. The biological sewage reaction system comprises a biological sewage reaction tank; an anoxic activated sludge region, an anoxic/anaerobic activated sludge region and an anoxic/aerobic transition region are sequentially communicated, an MBBR (Moving Bed Biofilm Reactor) treatment region is communicated with an aerobic activated sludge region through a perforation in the bottom of a partition wall, and the MBBR treatment region is communicated with a pure aerobic activated sludge region through an effluent screen mesh; the anoxic/aerobic transition region is communicated with the aerobic activated sludge region, and the pure aerobic activated sludge region is communicated with the anoxic activated sludge region through an internal reflux submersible sewage pump; the pure aerobic activated sludge region is communicated with a secondary sedimentation tank through a pipeline, and the secondary sedimentation tank is communicated with the anoxic activated sludge region through a return pipeline. The traditional CAST (Cyclic Activated Sludge Technology)/CASS (Cyclic Activated Sludge System) biological tank is modified, and therefore, on the premise that the modifying cost is reduced, the capacity for removing total nitrogen (TN) and total phosphorus (TP) organisms in the tank is effectively improved, the pollution load (expanding) treatment capacity is improved, and the sewage treatment efficiency is increased.

The invention relates to a technology for processing comprehensive chemical waste water from acrylonitrile and acrylic fibers production and is directed to the field of environment engineering technology. According to the invention, an aeration reaction, a biology hydrolysis acidification, a denitrification nitrogen removal and an aerobic biological treatment are adopted. The waste water is classified into C, N and S grade. The toxicity problem for microbes caused by the waste water is solved; the biological treatment capability and waste water processing effect are improved. The technology is characterized by simple and reasonable process flow. The operation cost is reduced. The technology is suited for industrial application and biology processing of high sulfur high nitrogen organic waste water of the same kind.

The invention discloses a method for simultaneously obtaining organic fertilizers and biological proteins by biologically treating inapplicable fresh tobacco leaves by utilizing lucilia sericata larvae. The method is characterized by comprising the following steps: stirring chips of the inapplicable fresh tobacco leaves and auxiliary materials such as fish meal uniformly to prepare culture materials, inoculating lucilia sericata eggs onto the surfaces of the culture materials, biologically transforming the culture materials by the hatched lucilia sericata larvae, simultaneously transforming the inapplicable fresh tobacco leaves to bio-organic fertilizers, and thus obtaining lucilia sericata maggot biological proteins. The method has the beneficial effects that the inapplicable fresh tobacco leaves are biologically transformed by utilizing the lucilia sericata larvae and the lucilia sericata maggot biological proteins and the high-quality bio-organic fertilizers are generated while the inapplicable tobacco leaves are disposed; about 3-4 tons of commercial bio-organic fertilizers and about 0.8-1.2 tons of fresh lucilia sericata maggots can be produced in the process of treating 10 tons of inapplicable fresh tobacco leaves each time, and thus efficient resource utilization of the inapplicable fresh tobacco leaves is achieved and wastes are turned into useful things; the occupied site is small and can be reused, so that the land usage is not changed; the tobacco leaves only need to be cut up or ground into 2-3cm powder, and thus the grinding cost is remarkably reduced; the energy consumption is low and discharge is less in the treatment process; the returns can be increased as the bio-organic fertilizers and the biological proteins are simultaneously generated.

The invention discloses a paint mist coagulant and a preparation method thereof. The paint mist coagulant comprises an agent A and an agent B, wherein the agent A is an aqueous solution which is prepared by taking a macromolecular polymeric metal salt as a main component; the macromolecular polymeric metal salt is aluminum salt or ferric salt; and the agent B is an aqueous solution which is prepared from a polyamide substance with the molecular weight of 9000000-12000000. In the application, paint wastewater, the agent A and the agent B are mixed according to a volume ratio of 500: 2: 1, paint in the paint wastewater agglomerates and floats upwards, the paint is separated from water to obtain clear water, and the clear water is reused; the application method is that the agent A is added and uniformly mixed firstly and then the agent B is added; and the treated paint wastewater is fat-soluble treated paint wastewater and water-soluble treated paint wastewater. The chemicals used in the invention are wide in source; the defects that the conventional process of preparing the paint mist coagulant is complicated and many complicated and expensive chemicals are added are overcome; the treatment cost of the ordinary paint wastewater can be reduced to 0.25 Yuan per ton; and the paint mist coagulant can be widely applied to circulating water treatment of a wet-type paint mist removing system.

The invention discloses a preparation method of long raw bamboo fiber, which belongs to the technical field of vegetable fiber production, and solves the problems of low production efficiency, low yield and serious waste water pollution of the current preparation methods. The method comprises the following steps: bamboo wood slicing, high-temperature high-pressure treatment, tearing processing, enzyme processing, chemical treatment, drying, and carding processing. The obtained long raw bamboo fiber has the following characteristics that an average fiber length is 4-5 cm, fineness is no less than 100 Nm, and the yield is no less than 60%. In addition, the long raw bamboo fiber has the beneficial effects that high production efficiency (annual output of a production line is no less than 50,000 tons), waste water pollution is light, and fiber is soft.

The invention belongs to a biofiltration bed-ecological floating bed eutrophication landscape water system and especially relates to a biofiltration bed-ecological floating bed eutrophication landscape water treatment system. The biofiltration bed-ecological floating bed eutrophication landscape water treatment system comprises a water gathering zone, a biofiltration reaction zone, an ecological floating bed zone and a reoxygenation zone. The upper part of the water gathering zone is provided with a water inlet, a fine grating net is arranged at the water inlet, the bottom of the water gathering zone is provided with a sand settling bucket, the upper part of the outer side wall of the water gathering zone is provided with multiple diversion apertures side by side, the water gathering zone is communicated with the biofiltration reaction zone by the diversion apertures, the biofiltration reaction zone is filled with a filler, the bottom of the biofiltration reaction zone is provided with an aeration device, the middle of the outer side wall is provided with liquid diversion trenches, the liquid diversion trenches are communicated with the ecological floating bed zone, the ecological floating bed zone is provided with a constructed wetland filter layer, the upper part of the ecological floating bed zone is provided with a water distribution system, and a water outlet pipe is arranged in the reoxygenation zone. The biofiltration bed-ecological floating bed eutrophication landscape water treatment system realizes combination of advantages of biofiltration reaction and ecological floating bed, utilizes reoxygenation, realizes thorough treatment on eutrophication landscape water, has a simple structure, is simple in operation and maintenance, has a low investment and operation cost and has no secondary pollution.

The invention discloses a vertical subsurface flow constructed wetland sewage purification device which is mainly composed of a cavitation air flotation device, a biological rotating disc-biological filter composite device, a vertical subsurface flow constructed wetland and a cyclone sand removal device. The invention also discloses a method for treating phosphorus-containing organic wastewater by utilizing the vertical subsurface flow constructed wetland sewage purification device. According to the invention, residual ammonia nitrogen and other polluted substances in the sewage can be efficiently removed, the quality of the sewage is improved, and secondary pollution in the treatment process is avoided. Meanwhile, a power-free transfer technology is adopted, a sewage treatment method is expanded by virtue of a mechanical method, and the construction cost and expense of advanced sewage treatment can be greatly reduced.

The invention discloses a method for obtaining organic fertilizer and bioprotein simultaneously by biologically treating inapplicable fresh tobacco leaves with chrysomya megacephala larva. The method mixes the inapplicable fresh tobacco leaves with auxiliary materials such as fish meal, guarantees the growth effect of the chrysomya megacephala on basis of scientifically treating the inapplicable tobacco leaves; and finally collects pure larva and breeding residues respectively, thus obtaining two products of nicotine-free bioprotein and organic fertilizer. About 3-4 tons of commercially bio-organic fertilizer and about 0.8-1.2 tons of the nicotine-free bioprotein can be produced by treating 10 tons of the inapplicable fresh tobacco leaves, so that efficient resource utilization of the inapplicable fresh tobacco leaves can be realized and wastes are changed into wealth. The place occupied by the method is small, and can be used repeatedly, without changing land usage. According to the method, the tobacco leaves only need to be cut or chopped into 2-3 cm, so that smashing cost is significantly reduced; a processing process has low energy consumption and few emissions; and the produced bio-organic fertilizer and bioprotein can increase profits.

The invention relates to the technical field of environmental protection, in particular to a biological treatment method of copper polluted seawater. The biological treatment method of the copper polluted seawater is characterized by comprising the following steps: inoculating microorganisms into a culture medium, performing cultivation, adding the microorganisms into the heavy metal polluted seawater and performing heavy metal polluted repair, wherein the microorganisms are one or a combination of more of bacillus, aspergillus flavus, Chinese chlorella, prorocentrum donghaiense and candida catenulata. The biological treatment method of the copper polluted seawater has the characteristics of large adsorption capacity, high selectivity, high efficiency and low cost; furthermore, a method for embedding the microorganisms is adopted, the treatment capability on the copper heavy metal in the seawater is improved, and the stability is improved.

The invention discloses an efficient and automatic control sewage treatment system. The system comprises a first treatment tank, a second treatment tank, a third treatment tank, a collection device, an analysis device and a control device, wherein the control device is in communication connection with the collection device, the analysis device, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a detection device and a chemical falling valve; a first similarity S1 is pre-set in the control device; the control device is used for obtaining a similarity comparing result S through the analysis device; the S is compared with the S1; the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are controlled to move according to a comparing result instruction; a first organic matter content value Y1 and a second organic matter content value Y2 are pre-set in the control device; and the control device is used for obtaining third treatment tank organic matter content Y through the detection device, comparing Y with the Y1 and the Y2, and controlling the chemical falling valve and a fifth solenoid valve to move according to a comparing result.

The invention discloses a biological rotating disc for sewage treatment. The biological rotating disc comprises a water collecting tank, an aeration mechanism arranged inside the water collecting tank, an aerobiotic rotating disc mechanism formed by connecting multiple aerobiotic rotating discs in order, and an anaerobic rotating disc mechanism formed by connecting multiple anaerobic rotating discs in order. The aerobiotic rotating disc is a circular ring structure such that a cavity which is coaxial with the aerobiotic rotating disc mechanism is formed inside the aerobiotic rotating disc mechanism. The biological rotating disc comprises a shield shell positioned inside the cavity. The anaerobic rotating disc mechanism is positioned inside the shield shell. The shield shell positioned outside the cavity is fixed on the water collecting tank. A motor is fixed inside the shield shell. The motor is connected to a rotating shaft. The aerobiotic rotating disc mechanism and the anaerobic rotating disc mechanism are respectively coaxially fixed on the rotating shaft such that the rotating shaft can simultaneously drive the aerobiotic rotating disc mechanism and the anaerobic rotating discmechanism to coaxially rotate. The problem that an aerobiotic biomembrane outside the biological rotating disc is easy to fall off after scoured by current such that oxygen enters an internal anaerobic biomembrane and then anaerobic treatment effect becomes worse is solved.

The invention discloses a method for treating lignite upgrading wastewater by virtue of micro-aerobic co-metabolism and relates to a method for treating coal chemical engineering wastewater. The method is used for solving the problems of difficulties in starting and proliferation of microbes in the conventional micro-aerobic process for treating lignite upgrading wastewater. The method comprises the following main steps: selecting lignite upgrading wastewater; by adopting returned sludge from a secondary sedimentation tank of an urban sewage treatment plant as inoculation sludge and using trehalose as a first substrate for co-metabolism, controlling the ratio of the concentration (COD equivalent weight) of added trehalose to the COD concentration of to-be-treated lignite upgrading wastewater at 0.1-1.0; maintaining the COD sludge load at 0.3-1.0kgCOD/(kgMLSS.d) at the hydraulic retention time of 6-24 hours and the superficial gas velocity of 0.09-0.15cm/s; and controlling stable industry and mining. According to the method, by adopting trehalose as the first substrate for treating lignite upgrading wastewater by virtue of micro-aerobic co-metabolism, the biodegradability of the lignite upgrading wastewater is greatly improved and the starting time of a reactor is shortened. After the reactor stably operates, the removal rate of COD in the lignite upgrading wastewater treated by micro-aerobic co-metabolism can reach above 70% and the removal rate of the total phenol can reach 80-90%.

The invention discloses a method and system for removing phosphorus and nitrogen from sewage, belonging to the field of sewage treatment. The method includes: pretreatment: making the sewage enter the pretreatment unit for pretreatment, removing large suspended solids in the sewage, and adjusting the sewage from which the suspended solids have been removed; biological phosphorus removal treatment: making the effluent after the above pretreatment enter the Biological phosphorus removal and organic matter removal are carried out in the biological phosphorus removal unit; biological autotrophic denitrification treatment: the effluent after the above biological phosphorus removal treatment enters the biological autotrophic denitrification unit, and passes through the The autotrophic metabolism of anammox bacteria in the bioautotrophic denitrification unit removes nitrogen in sewage, and the effluent from the bioautotrophic denitrification unit is used as regenerated water for phosphorus and nitrogen removal. The method has short technological process, good phosphorus and nitrogen removal effects, and low cost.

The invention relates to a method for treating lignite quality-improving waste water through aerobic cometabolism, relating to a method for treating coal chemical industry waste water and solving the problems of poor removal effect of an aerobic reactor on a pollutant component which can not be directly used as a microbe nutrient substance or smaller quantity and poorer flora function of microbe florae capable of degrading the substance. The method comprises the following main steps of selecting the lignite quality-improving waste water; selecting trehalose as a first substrate used for the cometabolism, wherein the addition amount of the trehalose is regulated and controlled by an automatic addition system; and by taking return sludge of a secondary sedimentation tank of an urban sewage plant as inoculated sludge, keeping the hydraulic retention time of the aerobic reactor at 18-24 hours, and controlling a stable working condition. According to the method, the trehalose is taken as the first substrate, so that an organic substance which can not be taken as an aerobic microbe direct substrate can be degraded or the growth and propagation of an aerobic microbe which takes the substance as the substrate are intensified; after the operation is stable, the COD removal ratio of the lignite quality-improving waste water subjected to aerobic treatment can achieve more than 85%, and the total phenol removal ratio can achieve more than 80%.

The invention relates to a biomass-emission-free method for enhancing a biological wastewater nitrogen and phosphorus removal effect. Two parts including a biological wastewater treatment system (short for BWT system) and a biomass circulating carbon source production system (short for BCPC system) are provided in the method. The method comprises the concrete steps of carrying out sludge-water separation in a secondary sedimentation tank after biologically removing nitrogen and phosphorus in the wastewater; enabling a part of separated sludge to flow back to a biological wastewater nitrogen and phosphorus removal reactor and the other part of sludge to enter an anaerobic biomass converter; then, carrying out solid-liquid separation, wherein the liquid (a carbon source required for wastewater phosphorus and nitrogen removal) is delivered to a liquid carbon source storage pool (for replenishing the concentration of the carbon source in feed water), and solid substances circularly enter the anaerobic biomass converter many times after being subjected to first-stage and second-stage treatments, so that no biomasses are discharged finally, and the wastewater nitrogen and phosphorus removal effect is remarkably enhanced.

The invention relates to a multistage baffled rainwater garden system used for processing initial rainwater and application of the multistage baffled rainwater garden system.The system comprises a filter area, multiple stages of baffled areas and an infiltration and reuse area which are sequentially connected in series.A non-overflow partition is arranged between the filter area and the first baffled area.The bottom of the filter area is communicated with the bottom of the first-stage baffled area.Overflow partitions are arranged between the odd-number baffled areas and the even-number baffled areas which are adjacent to the rear ends of the odd-number baffled areas.Non-overflow partitions are arranged between the even-number baffled areas and the odd-number baffled areas adjacent to the rear ends of the even-number baffled areas.The bottoms of the even-number baffled areas are communicated with the bottoms of the even-number baffled areas adjacent to the rear ends of the even-number baffled areas.An overflow partition is arranged between the last stage of baffled area and the infiltration and reuse area.The system can be suitable for gardens, communities, schools, urban green lands and the like, and pollutant in initial rainwater can be effectively processed; meanwhile, processed clean rainwater can infiltrate underground or be collected to be reused, and therefore the runoff volume and the runoff peak value are decreased, and the aims of environment protection and landscape improvements are achieved.

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.