154results about "Water treatment temperature conditions" patented technology

The invention belongs to the technical field of ecological engineering, and particularly relates to a device for simulating an in-situ river course sediment anaerobic ammoxidation process, and a use method and application thereof. The device is composed of an organic glass column, a gas collection box on the top of a test column, a water body temperature control system on the surface of the double-layer organic glass column, a computer monitoring unit and an in-situ water body water storage unit. The inside of the simulation test column is provided with a submerged plant (waterweed), an in-situ sediment deposit, a temperature probe, a pH probe and a dissolved oxygen probe. The device can implement real-time monitoring on the temperature, pH and dissolved oxygen in the whole simulation culture process, and can regularly complete determination of gas production condition in the device, determination of the concentration of water body nutritive salts and determination of the anaerobic ammoxidation bacteria related function gene copy number in the sediment deposit. The device is simple in structure, can be operated indoors and outdoors, has favorable effect on simulating the river course anaerobic ammoxidation process, and is convenient to manufacture and low in cost.

The invention provides a method and a device applied to heating influent by virtue of an efficient anaerobic reactor. The device mainly comprises a material inlet pool, the efficient anaerobic reactor and a heat pump unit, wherein the material inlet pool, the efficient anaerobic reactor and the heat pump unit are connected with one another sequentially; the heat pump unit consists of an evaporator, a compressor, a condenser and an expansion valve, and the evaporator, the compressor, the condenser and the expansion valve are connected with one another by virtue of a refrigerant pipeline to form a closed circulation system; a water inlet pipe of the material inlet pool is connected with a water inlet of the condenser, a water outlet of the condenser is connected with the material inlet pool by virtue of a pipeline, and a water outlet system of the efficient anaerobic reactor is connected with the evaporator by virtue of a pipeline. The method and the device have the beneficial effects of 1, remarkable environmental protection benefit; 2, energy saving, and consumption lowering; 3, economy and reliability in running; and 4, good social benefit.

A process for converting ammonium (NH₄⁺) of a mainstream of a wastewater plant to dinitrogen gas (N₂), including the consecutive steps of i.) removing biodegradable carbon compounds in the mainstream, ii.) converting ammonium (NH₄⁺) in the mainstream to nitrite (NO₂⁻) in an aerated biological process containing ammonium oxidizing bacteria (AOB) in a nitration vessel (133a-133d); and iii.) denitrifying the resulting stream from step ii.) to dinitrogen gas in an anammox vessel (200). Growth of nitrite oxidizing bacteria (NOB) in step ii.) is prevented by periodically subjecting the bacteria in said nitration vessel (133a-133d) to water suppressing growth of nitrite oxidizing bacteria (NOB).

The invention discloses an oxygenation and aeration device for sewage purification. The oxygenation and aeration device comprises a sewage aeration tank; a fixed cross beam is arranged above the sewage aeration tank; the lower side of the fixed cross beam is fixedly connected with a cylinder support; the oxygenation and aeration device further comprises a vertical cylinder body; the outer wall ofthe vertical cylinder is fixedly supported and connected to the lower end of the cylinder support; a gas supply channel is coaxially arranged in the vertical cylinder body; a horizontal air supply platform is fixedly connected to the upper end of the vertical cylinder body; and the air supply platform is provided with a centrifugal booster fan, an air heater and an air inlet shell. The oxygenationand aeration device is simple in structure, and is used for continuously aerating hot air into sewage, so that aeration and oxygenation are carried out on the sewage, a certain heating effect is achieved, and reaction activity of the sewage is maintained.

The invention discloses a leachate treatment method of a waste incineration power station. The leachate treatment method comprises the following steps: 1) introducing the waste incineration leachate into a sand settling pond, and preprocessing the waste incineration leachate to remove a great amount of settled sand in sewage; 2) introducing the leachate into a regulating pond, tempering the leachate, so that the PH of the inlet water of the sewage is kept at 5 to 6 in 2 days; 3) enabling the leachate to enter an intermediate temperature pond, introducing steam to adjust the temperature to be between 35 DEG C and 39 DEG C, and homogenizing the sewage temperature by virtue of a stirrer in the intermediate temperature pond; 4) introducing the incineration waste leachate after being processed in the intermediate temperature pond to have anaerobic decomposition, decomposing and converting various complex organic matters into marsh gas, so that the incineration waste leachate is primarily purified; 5) carrying out the denitrification/nitrification treatment; and 6) filtering. By adopting the leachate treatment method, the water yield of a leachate treatment system in the waste incineration power station, the residual concentrated liquid can be ensured to be completely consumed in the waste incineration power station, and the emission of the concentrated liquid can be prevented from severely polluting the environment.

A method for directly and deeply purifying high concentration organic wastewater, specifically includes following steps of: (1) fortified precipitation treatment; (2) rapid filtration of sediment of suspended solids; (3) pH value adjustment; (4) hydrolysis acidification: pH value adjusted waste water enters a water distribution unit in which biological hanging film filter is arranged to fortify an anaerobic hydrolysis acidification function of the waste water; and (5) bio-filter treatment. A rapid and low cost treatment method for high concentration, high ammonia and high nitrogen organic waste water is provided by means of water and air distribution by the biological filtering bed, an air-water backwashing bed layer structure, setting of a temperature regulation system for the biological filtering bed, and a combined process of the biological filtering bed with a fortified sedimentation unit, a suspension object sediment rapid filtration unit, and like unit structures.

The invention relates to a microorganism feeding device for water ecological management, and aims to solve the problem of high labor intensity of operators in a mode of manually feeding microorganisms. The device comprises a floating body, a supporting plate is arranged on the upper surface of the floating body, an equipment shell is arranged above the supporting plate, a microbial agent storage box, a microbial strain culture tank and a storage battery are arranged on the left side in the equipment shell, the microbial agent storage box is located above the microbial strain culture tank, a connecting pipe at the lower end of the microbial agent storage box extends into the microbial strain culture tank, a pipeline outlet formed in the lower end of the microbial strain culture tank extendsto the lower end of the floating body, electromagnetic valves are arranged on the pipeline and the connecting pipe, a control box is arranged on the right side in the equipment shell, a GPS positioning module, a central processing module, a wireless transmission module and a storage module are arranged in the control box, and the storage battery, the electromagnetic valve, the GPS positioning module, the wireless transmission module and the storage module are all electrically connected with the central processing module.

The invention discloses an ammonia-nitrogen wastewater treatment system and process based on a PTFE (polytetrafluoroethylene) deamination membrane component. The system comprises a microfiltration system, an agent adding box, a membrane deamination system device, an ammonium recycling system device and a heat exchange component. The process includes: removing suspended matter in ammonia-nitrogen wastewater through the microfiltration system; utilizing a sodium hydroxide solution to adjust pH value of the wastewater; utilizing a sealed heating circulating water tank to heat the wastewater to separate ammonium; utilizing the PTFE deamination membrane component to deaminate the wastewater, and discharging the wastewater; converting collected ammonium into an ammonium sulfate solution by the ammonium recycling system device to realize recycling conversion of ammonia-nitrogen. By using the system and the process, capability of treating industrial wastewater and domestic wastewater is improved greatly; the system and the process have efficient deamination purification effect on high-concentration ammonia-nitrogen wastewater, and has extremely high recycling conversion rate to ammonia-nitrogen waste, thereby being capable of promoting comprehensive development of petroleum chemical industry of China and of great significance in treating water pollution and environment pollution caused by wastewater discharging in China.

This wastewater treatment system is constituted by being provided with a solid-liquid separator 2 that separates the liquid portion and the solid portion from organic wastewater, a first anaerobic treatment tank 4 that carries out anaerobic treatment of the liquid portion separated by the solid-liquid separator 2 and obtains processed water that has passed through a filter mechanism 3 from sludge, a second anaerobic treatment tank 5 that carries out anaerobic treatment of the solid portion separated by the solid-liquid separator 2, and a sludge supply mechanism 6 that supplies the sludge in the second anaerobic treatment tank 5 to the first anaerobic treatment tank 4, and the filter mechanism functions stably without increasing the size of the anaerobic treatment tanks.

The invention provides a baffling in-situ treatment system for a black and odorous water body and a method for treating the black and odorous water body by use of the system. The baffling in-situ treatment system for a black and odorous water body comprises a pretreatment area, an aerobic biological treatment area and a settling area. By transforming a river structure and increasing the water flow baffling, the time of a water body staying in a unit area is increased, and the surrounding land is basically not occupied. In-situ remediation is performed mainly by a biological process, and an aim of improving the water quality of the black and odorous water body is achieved finally. Moreover, residual sludge generated at the tail end can be subjected to baffling or discharge treatment; the sludge backflow is controlled to increase the regional microorganism concentration and improve the treatment efficiency; the sludge discharge is controlled to realize an effect of removing phosphorous of the water body; according to the method, since the in-situ remediation of the black and odorous water body is limited in a smaller area, sufficient time is provided for degrading pollutants in water, and the treatment cost is reduced; moreover, the treatment is quick and efficient, and secondary pollution is avoided.

The invention discloses a novel method for synchronously removing paracresol, ammonia nitrogen and nitrate in waste water. According to the method, intermediate phenol-containing metabolite in denitrification and degradation of paracresol is accumulated through adjustment of redox potentials, accumulation of nitrite is further promoted, on the basis, under the action of anaerobic ammonia-oxidizing microorganisms and other microorganisms within a system, paracresol, ammonia nitrogen and nitrate can be removed synchronously, and products are carbon dioxide and nitrogen which are free of secondary pollution. The method can be operated continuously or intermittently and has the advantages of being high in processing efficiency, free of secondary pollution, small in occupied area, low in operating cost and the like.

The invention discloses a method for high-temperature anaerobic treatment on cassava alcohol waste liquor by different inocula, and belongs to the technical fields of high-concentration organic wastewater treatment control and environment-friendly purification treatment. The method is characterized in that the high-concentration organic wastewater is treated by different inocula through anaerobic fermentation, the fermenting characteristics are analyzed to understand the relationship between the anaerobic fermenting metabolite of the different inocula and key enzyme activity, the reliable guidance is provided for the actual cassava alcohol waste liquor treatment process, and a new concept is provided to find the proper inoculated sludge; a large amount of marsh gas can be produced in the anaerobic fermentation process, the cassava alcohol waste liquor is effectively treated, and the harmless, reduction and resource effects of the high-concentration organic wastewater are realized. The method has the advantages that the method is simple, the operation is easy, the stability is high, and the fermenting characteristics of different inoculated sludge on the cassava alcohol waste liquor treatment can be effectively evaluated.

The invention relates to a floating island monomer which comprises floating island plants and a packing substrate layer which is used for bearing the floating island plants and providing root spreading of the floating island plants. The packing substrate layer is a palm fiber board formed by pressing of palm fiber. The invention further relates to an ecological floating island applying the floating island monomer. Compared with the prior art, the floating island monomer is good in buoyancy and favorable for establishment of a micro environment ecosystem, and meanwhile, good anti-storm resistance can be achieved by the floating island monomer. In addition, heat preservation effect can be achieved for roots of the floating island plants, freeze resistance capability of the floating island plants is improved, and security for the winter is achieved; the ecological floating island composed of the floating island monomer is simple and stable in structure, convenient in processing and installation and good in anti-storm resistance of the total buoyancy clutch.

The invention discloses a microbial flocculant, a compound flocculation system and a preparation and application methods thereof. The method comprises the steps that crop straw is used as raw materials, the microbial flocculant is prepared in a fermentation mode, and the compound flocculation system is constructed; during waste leachate treatment, polymerized ferric sulfate and the microbial flocculant are adopted to be added in a staged mode; advanced treatment is performed on the treated waste leachate by adopting a baffling overflowing type filler biological denitrification reactor. The waste leachate is pretreated through the compound flocculation system constructed by the microbial flocculant and the polymerized ferric sulfate, the problems that the waste leachate is poor in biochemicalization performance and high in pollutant concentration are solved, the microorganism toxic action and the physical and chemical treatment technology cost are further optimized; a follow-up biological denitrification system is low in load, and the biochemicalization performance of the waste leachate is improved; the removal rate of matter hard to degrade in the waste leachate is greatly improved, the problem that the waste leachate with the high COD content is hard to treat is solved, and waste is comprehensively utilized.

Provided is a wastewater treatment apparatus and a wastewater treatment method, in which denitrification process by anaerobic ammonium oxidation method can be stably performed at low cost. The wastewater treatment apparatus includes an ammonium oxidation tank and a heating tank in which the microbial sludge withdrawn from the ammonium oxidation tank is subjected to heat treatment. A wastewater treatment method is to heat the microbial sludge withdrawn from the ammonium oxidation tank by using heat supplied from a digestion tank in which waste sludge is digested by anaerobic microorganisms or from a heat source for heating the waste sludge to be digested in the digestion tank, and to return the microbial sludge, in which activity of nitrite oxidizing bacteria is reduced by the heat treatment, to the ammonium oxidation tank, so that the ammonium nitrogen contained in the wastewater is oxidized to nitrite nitrogen.

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment method which comprises the following steps: 1) sewage pretreatment, 2) softening treatment, 3) flocculation treatment, 4) heavy metal removal treatment, 5) heavy metal content detection, 6) biochemical treatment, 7) organic matter content detection, 8) secondary precipitation treatment and 9) disinfection treatment. According to the sewage treatment method, insoluble substances in sewage are sequentially removed through step 1) sewage pretreatment, step 2) softening treatment and step 3) flocculation treatment, then heavy metal ions in the sewage are removed through step 4) heavy metal removal treatment, and BOD and COD contents in the sewage are reduced through step 3) flocculation treatment. Organic matters in the sewage are degraded through biochemical treatment in the step (6), so that the problems that the existing industrial sewage mainly adopts a biological treatment method matchedwith a physical treatment method and a chemical treatment method, but the treatment method is still complex and the cost is relatively high are solved.

A reaction zone-adjustable two-stage anoxic/aerobic biofilm sewage treatment system is disclosed and comprises a first-stage A/O unit and a second-stage A/O unit which are connected in sequence, wherein the first-stage A/O unit comprises a first anoxic reactor, a second anoxic/aerobic reactor, a third aerobic reactor, a fourth aerobic reactor and a fifth aerobic reactor which are connected in sequence, and the second-stage A/O unit comprises a sixth anoxic reactor, a seventh anoxic reactor and an eighth aerobic reactor which are connected in sequence. The system is provided with the front denitrification device and the rear denitrification device, the high-efficiency utilization and denitrification efficiency of a carbon source in the raw water is improved, the denitrification capacity ofthe system is effectively controlled according to treatment target requirements through accurate control over addition of an exogenous carbon source in post denitrification, the most economical efficiency and stability of sewage denitrification treatment are achieved, and the system is suitable for sewage treatment with high emission standards and can be automatically controlled and adjusted through a reaction space and reaction conditions.

A method for desalinating a brine includes the use of a cooled intermediate-cold-liquid (ICL), which combines with the brine in a crystallization or freezing tank to produce a slurry of ice, brine, and ICL. The method includes steps for separating the ICL, ice and brine, and returning the separated ICL to the source of cooled ICL tank. The method concludes with the steps of passing the separated brine to the crystallization tank, and melting the separated ice to form desalinated water. The method is significant in that it produces desalinated liquid water and solid salts. The combination of superior heat transfer with high quality purified water and competitive desalination economy makes the disclosed freeze desalination technology an attractive solution for desalination of highly concentrated brines produced in a variety of industries, including but not limited to the oil and gas industry and reject brine management.

The invention discloses an aquatic plant in-situ restoration method of a eutrophicated water body. In the subtropical monsoon moist climate region, when the ambient temperature exceeds 10 DEG C, the restoration plant Pistia is put into the eutrophicated water body and subjected to float planting; by the aid of the riverbank or existing dike of the water body, a bamboo pole fence is adopted to prevent the Pistia from diffuse randomly; the Pistia enriches nitrogen and phosphorus in the water body in the growth process; and the Pistia is periodically salved to indirectly remove the nitrogen and phosphorus eutrophicated substances in the water body, and the salved Pistia plant is recycled. The method has the advantages of obvious nitrogen and phosphorus removal effects; and the salved Pistia plant can be recycled and used as a biomass energy material for biogas fermentation, a raw material for rotting farmyard manure and a raw material for livestock/poultry cultivation feed.

The invention discloses a kitchen cleaning wastewater and kitchen garbage comprehensive treatment method. The method comprises the following steps of: collecting kitchen garbage and kitchen cleaning wastewater by using an indoor kitchen cleaning wastewater and kitchen garbage rapid treatment system, and crushing, heating and fermenting the kitchen garbage and kitchen cleaning wastewater; and carrying out solid-liquid separation on the crushed, heated and fermented kitchen garbage and the kitchen clean wastewater by using an outdoor kitchen cleaning wastewater and kitchen garbage collection system, wherein the separated solid is used as an organic fertilizer, and the liquid is used for greening and watering or is discharged into an urban recycled water pipe network. According to the invention, the kitchen garbage can be changed into organic fertilizer after meal on the same day in resident households or dining places, the weight of the kitchen garbage can be reduced by more than half, and the kitchen garbage is directly transported to a designated place for comprehensive utilization by an urban environmental sanitation facility engineering system. An existing large-scale kitchen garbage disposal mode is changed into a household disposal and comprehensive utilization mode, kitchen garbage is changed into recyclable garbage, time and labor are saved, land is not occupied, pollution is avoided, the mode in which the kitchen garbage is conveyed into a garbage landfill, a garbage incineration plant, a kitchen garbage treatment plant and the like for disposal is ended, and the ecological environment is changed.

A method for treating high-concentration cassava alcohol wastewater by continuous full-mixing anaerobic reaction employs effluent from an alcohol distilling column as water to be treated and anaerobic sludge as inoculated sludge; the method comprises the steps of starting the system at 50-60 DEG C; adding sludge proportionally into a system reactor, and domesticating by air culture; adding the cassava alcohol wastewater into a full-mixing anaerobic reactor, hydraulically stirring, adjusting initial load, increasing the load gradually, increasing quantity so that volumetric load reaches 7-9 kg COD/(m<3>.d), allowing full contact between the sludge and the wastewater, anaerobically digesting to convert organic matters in the wastewater into biogas and water into standard water; collecting a sample from the full-mixing anaerobic reactor each day, and measuring COD (chemical oxygen demand) by a potassium dichromate method; precisely measuring biogas yield with a gas flowmeter; analyzing biogas composition with a gas chromatograph. The problem that high-concentration suspended solid wastewater is difficult to treat is solved, and the gas yield and utilization value of waste are increased.

The invention discloses an efficient anaerobic baffled reactor for treating domestic black water. The efficient anaerobic baffled reactor comprises a water inlet tank, an anaerobic baffled reactor body, a thermostatic water bath, a gas collecting pipe, a mud discharging pipe and a water outlet tank; the water inlet tank is connected to the front end of the efficient anaerobic baffled reactor body;a compartment is arranged in the anaerobic baffled reactor body; the thermostatic water bath is arranged outside the anaerobic baffled reactor body; and the tail end of the efficient anaerobic baffled reactor body is connected with the water outlet tank. Biogases generated in an efficient anaerobic fermentation process is used as domestic energy after being subjected to treatment such as dehydration; pathogenic bacteria and parasitic ovum in the black water are greatly removed by efficient anaerobic treatment, so that the black water reaches the harmless sanitary standard; the ammonization rate of the black water is increased, and the ammonia nitrogen concentration of bioavailable effective nitrogen converted from organic nitrogen is increased; and organic matters are greatly removed by an efficient anaerobic reaction, nitrogen and phosphorus nutrients are completely retained, and the harmless black water containing high-concentration nitrogen and phosphorus can be used as an organicfertilizer to be directly returned to the field after being collected by the water outlet tank.

The invention relates to a method for enhancing formation speed of anaerobic ammoxidation granular sludge by controlling reflux ratio. The method comprises the following steps: arranging a sludge reaction region of a UASB (upflow anaerobic sludge blanket) reactor tank body into an inverted cone cylinder; carrying out inoculation and domestication on the UASB reactor by using a refuse leachate-sewage plant anaerobic sludge mixture as inoculation sludge, and adding a high-polymer flocculant with the molecular weight of 4-8 million; adding a sewage plant sludge solution as an anaerobic ammoxidation granular sludge culture nutrient source; adding an inorganic mixed buffer solution to regulate the pH value to 7.85-8, and controlling the temperature of the tank body at 35+/-1 DEG C; controlling the influent water nitrogen load at 0.4-0.5 kgN/m<3>.d, and enhancing the reflux ratio according to the 0%-50%-100%-150%-200% gradient; and while keeping the reflux ratio at 200%, enhancing influent water nitrogen load to 0.65-0.7 kgN/m<3>.d, and after the reactor reaches the stable state, forming the anaerobic ammoxidation granular sludge.

The invention discloses a farming wastewater anaerobic treatment process. The farming wastewater anaerobic treatment process comprises the following steps of 1) transforming a USR (upflow anaerobic sludge reactor), feeding in farming wastewater for anaerobic treatment and collecting the produced biogas inside a biogas tank; 2) discharging the effluent of the USR into a precipitation system for natural precipitation, discharging produced sludge, and collecting the produced biogas into the biogas tank; (3) discharging the supernatant of the precipitation system into a UASB (upflow anaerobic sludge bed) for anaerobic treatment, and collecting the produced biogas into the biogas tank; 4) discharging the effluent of the UASB into a biochemical system for subsequent treatment; 5) desulfurizing,dewatering and then feeding the biogas in the biogas tank into a boiler system for combustion, of which produced heat energy is applied to ensuring normal operation of the USR and the UASB at low temperature, and collecting and storing superfluous biogas. The farming wastewater anaerobic treatment process can be directly applied to processing manure-submerged farming wastewater and meanwhile ensure that processed wastewater can completely meet the requirements of the UASA on low solid content and the UASB can work normally in winter in northern cold regions.

The invention provides paracoccus denitrificans and method for biological denitrification with combination of mineralized bed and paracoccus denitrificans. The paracoccus denitrificans is autotrophicdenitrification paracoccus denitrificans TNS-1, mineralized garbage is selected as a main ingredient of a packed bed, waste is recycled, the biologic enhancement effect is adopted for total nitrogen removal, and the wastewater nitrogen removal method is environmentally friendly, free of secondary contamination, low in treatment cost, low in energy consumption and low in carbon.