75results about How to "Long mud age" patented technology

The invention discloses a method and a device for treating garbage percolate, wherein the method comprises the steps of pretreatment, anaerobic treatment, membrane biochemical treatment, nanofiltration treatment, sludge treatment and the like; the device comprises a primary sedimentation tank (1) and an adjusting tank (2), the adjusting tank (2) is connected with an anaerobic reactor (3), the anaerobic reactor (3) is connected with a denitrification tank (4), and the denitrification tank (4) is communicated with a nitrification tank (5); and the nitrification tank (5) is connected with an ultrafiltration apparatus (6), and the ultrafiltration apparatus (6) is connected with a nanofiltration device (7). The method and the device achieve COD degradation of high-concentration wastewater so that the COD of high-concentration COD of 50,000 reaches about 50 after treatment and reaches the standard of industrial reuse water, thus the method and the device achieve zero discharge of the percolate, initiate a new attempt to treat high-concentration percolate, and fill up the domestic blank.

The invention discloses a sludge reflow-free device with a simultaneous nitrification and denitrification (SND) function. The device comprises a pool body; the sidewall of the pool body is provided with a main water inlet; the interior of the pool body is divided by a clapboard into a diversion area, an aeration area and a sludge precipitation area in sequence; the aeration area is internally provided with an overflow groove; the bottom of the aeration area is provided with microporous aeration devices distributed uniformly; and the sludge precipitation area is internally provided with a membrane element. The invention also discloses an operation control method of the device. By skillful arrangement of aeration pipes and combined use with a biological membrane, the power cost and the operating cost of sludge reflow are saved, and the purpose of reducing energy consumption is achieved. The biological environment to be achieved by the simultaneous nitrification and denitrification is adjusted indirectly through adjusting parameters such as active sludge concentration, sludge age, unit sludge load and the like; the operation is strong in human controllability, and the problem that the microbial metabolic environment in the SND technology is not easy to control is solved.

A process for treating the water recovered from oil field in order to inject the treated water back to oil field features the combination of biologic treating with membrane separation. The special bacillus and extreme bacillus are screened, inoculated and purified for using them in biologic treatment. Its advantage is high treating effect.

The invention provides a folded plate anaerobic moving biofilm online sewage treatment system and relates to the technical field of sewage treatment systems. The folded plate anaerobic moving biofilm online sewage treatment system comprises a folded plate anaerobic reactor; the output end of the folded plate anaerobic reactor is connected with a moving bed biofilm reactor; and the first output end of the moving bed biofilm reactor is connected with a first water pipe. The invention designs an efficient energy-saving treatment method which is small in size, low in infrastructure expenditure and running expense, and more economical than a contact oxidation method and is an upgrade and an improvement or a substitute of a traditional activated sludge process, a fixed bed contact oxidation method and other treatment methods. The folded plate anaerobic moving biofilm online sewage treatment system is widely applied to newly building or upgrading and improving all the existing industrial and domestic sewage treatment systems and particularly greatly improving the system effluent quality and the phosphorus and nitrogen removal effect in the upgrading and improvement project on the premise that the improvement on the existing building is small, and the investment is reduced.

The invention discloses a dual-reflux efficient anaerobic reaction device and a wastewater treatment method. The dual-reflux efficient anaerobic reaction device comprises a wastewater allocation tank, an anaerobic reactor, a gas-liquid separator and a selective precipitator, wherein facilities for adjusting the temperature, the pH value and the like are arranged in the wastewater allocation tank, and an anaerobic water inlet pipe is connected with the anaerobic reactor; a water distributor, a first-stage three-phase separator and a second-state three-phase separator are arranged at the bottom in the anaerobic reactor; the upper part of the gas-liquid separator is connected with the first-stage three-phase separator and the second-state three-phase separator by virtue of a marsh gas riser pipe respectively, and the bottom of the gas-liquid separator is connected with the water distributor by virtue of an internal reflux pipe; and the upper part of the selective precipitator is connected with an anaerobic water outlet pipe of the anaerobic reactor, the bottom of the selective precipitator is connected with the wastewater allocation tank by virtue of an external reflux pipe, and the external reflux pipe is provided with an adaptive flow control device. The dual-reflux efficient anaerobic reaction device disclosed by the invention is strong in impact resistance, high in anaerobic biochemical removal rate, and beneficial for maintenance of efficient and stable running of the system.

The invention discloses a self-aerated biological runner and small-town wastewater treatment equipment and process. A fiber bundle bionic filler screen is hung in the cavity of the self-aerated biological runner in an overlapping way; two ends of the fiber bundle bionic filler screen are hung on two adjacent runners respectively; the self-aerated biological runner has high aeration efficiency; aeration equipment in the sewage treatment equipment is used for aerating by using the self-aerated biological runner; an up-flow honeycomb duct is adopted for stirring instead of a stirrer; mud-water separation is performed with a three-phase separator and a tilted plate separator. In the wastewater treatment process, a biological contact oxidizing process combining an active sludge method and a biological membrane method is adopted, a gas stripping technology is adopted for sewage reflow in order to omit an inner circulation pump, and a three-phase separation technology and inclined plate settlement are adopted for mud-water separation. The process is simple, is safe, is easy to operate, and has high treatment efficiency.

The invention relates to a biochemical pool MBBR process and denitrification deep-bed filter tank coupled nitrogen and phosphorus removal system and a method thereof. The system comprises a biochemical pool and a secondary sedimentation tank. The biochemical pool is divided into at least two chambers. In the chamber close to the outlet are arranged several suspended fillers. The denitrification deep-bed filter tank is located downstream the secondary sedimentation tank. The denitrification deep-bed filter tank comprises a flocculation basin, inside which a stirring mechanism is arranged and the top of which is provided with a carbon source dosing mechanism and a flocculating agent dosing mechanism. A water inlet main canal is connected downstream, and an intake gate is arranged in the water inlet main canal. A filter grid is arranged downstream. An intake canal is connected under the filter grid. A filter tank is arranged under the intake canal. Inside the filter tank, a filter layer,a supporting layer, a filter board and a filter head disposed on the filter board are successively arranged from top to bottom. The denitrification deep-bed filter tank also comprises a backwashing fan and a backwashing water pump. The outlet of the backwashing fan extends through a pipeline to the supporting layer, and the outlet of the backwashing water pump extends through a pipeline into the filter tank below the filter board. The pipelines are all provided with a control valve. The system of the invention can perform denitrification and physical interception to remove phosphorus.

The invention discloses a method for biochemically treating coking wastewater. The method comprises the following steps of: pretreating coking wastewater; feeding pretreated coking wastewater into an anaerobic tank for anaerobic treatment; and feeding the treated wastewater into an aerobic three-phase fluidized bed for anaerobic treatment, wherein the pH of the anaerobic tank is between 6.0 and 7.5; the hydraulic retention time is between 8 and 30 hours; the pH of the aerobic three-phase fluidized bed is between 7.5 and 8.5; the hydraulic retention time is between 8 and 24 hours; the dissolved oxygen content is between 2 and 4mg/L; and effluent COD, ammonia nitrogen, volatile phenol and cyanide meet the steel industrial water pollutant effluent standard (GB13456-92) and the primary standard of the integrated wastewater effluent standard (GB 8978-1996). The method can effectively solve the problems of bad treatment effect, large amount of sludge, complicated process, high cost and the like caused by biochemically treating the coking wastewater by ammonia nitrogen and has the advantages of simple operation, low cost, economic feasibility, contribution to popularization, and capability of effectively improving and solving the problem of environment pollution caused by the coking wastewater.

The invention relates to an industrial sewage deep denitrifying and recycling process. Aiming at the problems of the existing prepositioned denitrification or synchronous denitrification denitrifying process that the denitrification is not complete and total nitrogen content of output water is higher, the invention provides an O/A/O (Oxic/Anoxic/Oxic) process and a first-grade aerobic tank and ananaerobic tank are respectively controlled to optimal conditions needed by nitrification and denitrification, so that nitrification, carbonization and denitrification processes can be completely finished; a residual carbon source of denitrification is decomposed in a second-grade aerobic tank; and the tank is internally provided with an ultra-filtration membrane to replace a sedimentation basin. The industrial sewage deep denitrifying and recycling process disclosed by the invention has the characteristics of high total nitrogen content and COD (Chemical Oxygen Demand) removing rate, simple flow and convenience for controlling, is applicable to modifying the existing sewage treatment system with a total nitrogen index which does not reach to the standard, or deep denitrification treatmentof industrial sewage which has high total nitrogen and insufficient carbon source, and is difficult to biologically degrade; and the output water can be used as a water resource of supplement water of circulating cooling water, and supplement water of a boiler, and has other usages.

The biological sewage treating process by means of fiber membrane fixed organism includes the following steps: 1. weaving fibrous biological membrane carrier with Dacron filament and attaching active microbial sludge for sewage treatment to the surface of the fiber; and 2. setting the fibrous biological membrane carrier in anaerobic or aerobic reactor, and soaking the carrier in industrial sewage over aerator and basic device so that the ascending bubble can provide organism with sufficient oxygen. The present invention has high sewage treating efficiency, stable performance, low power consumption, long service life and other advantages.

The invention discloses a deep-bed multiplication MBBR reactor for rural sewage treatment. The deep-bed multiplication MBBR reactor comprises an anaerobic tank, an anoxic tank, an MBBR tank, a secondary sedimentation tank and a micro-ecology filter bed and is characterized in that the anaerobic tank is connected with a water inlet pipe, the anaerobic tank is communicated with the anoxic tank through a pipeline I, the anoxic tank is communicated with the MBBR tank through a pipeline II, the MBBR tank is communicated with the secondary sedimentation tank through a pipeline III, the secondary sedimentation tank is communicated with the micro-ecology filter bed through a secondary sedimentation tank water outlet pipe, and plants are planted on the micro-ecology filter bed; sewage enters the water inlet pipe, flows into the anaerobic tank, is sequentially treated by the anaerobic tank, the anoxic tank, the MBBR tank and the secondary sedimentation tank and then enters the micro-ecology filter bed. The deep-bed multiplication MBBR reactor has the advantages that an aerobic zone is small in floor space, and civil engineering investment is saved; under conditions that same filler is addedand pollution load is identical, the MBBR tank about accounts for 70% of the capacity of a conventional aerobic tank; meanwhile, the MBBR tank is short in starting time, low in operation energy consumption, resistant to impact load, prolonged in sludge age, free of sludge bulking and resistant to toxic compounds.

The invention belongs to the technical field of sewage treatment equipment, and particularly relates to a device and process of distributed domestic sewage treatment. The device comprises a cylindrical pool body, wherein the cylindrical pool body is internally provided with an anoxic tank, an aerobic tank and an inverted truncated conical tank, an air inlet pipe box is connected with an air inletpipe and a blower, and a water inlet pipe is arranged at the top of the left side of the anoxic tank, a water outlet is formed in the bottom of the right side of the anoxic tank, and a perforated aeration pipe is arranged in the anoxic tank; the aerobic tank communicates with the water outlet of the anoxic tank, a microporous aeration disc and a third gas stripping pump are arranged at the bottomof the aerobic tank, and a gap is formed in the side wall of the bottom of the inverted truncated conical tank; and a first gas stripping pump is also arranged at the bottom of the inverted truncatedconical tank, the outlet end of the first gas stripping pump is connected with a sludge returning pipe, the free end of the sludge returning pipe communicates with the anoxic tank, and a water outletpipe is arranged at the center of the top of the inverted truncated conical tank. The invention aims to solve the problems, which are caused by the structural defects of an existing sewage treatment device, of a poor effect of biological removal of nitrogen and phosphorus, poor quality of effluent, large floor space and no benefits for promotion of a distributed sewage treatment technology.

The invention discloses an integrated toxic degradation-resistant wastewater treatment device and treatment method. The device comprises an adjusting tank, a first-stage reactor, a second-stage reactor, a third-stage reactor, a coagulative precipitation tank and a biochemical reaction tank which are sequentially connected in series, and further comprises an aeration blower, wherein the first-stagereactor and the third-stage reactor are advanced oxidation reactors, the second-stage reactor is a Fenton reactor, the coagulative precipitation tank comprises 2-4 stages, each stage of coagulative precipitation tank is formed by connecting a coagulative reaction tank, a primary precipitation tank and a secondary precipitation tank in series, and the biochemical reaction tank is formed by connecting an anoxic tank, an aerobic tank, a precipitation tank and a clean water tank in series. According to the wastewater treatment method provided by the invention, a toxic degradation-resistant wastewater treatment device is combined with reasonable process parameters, a Fenton-like reaction and a Fenton reaction are effectively coupled and cooperate with each other, and proper coagulating sedimentation and biochemical reaction processes are matched, so that the wastewater treatment effect can be enhanced, the wastewater treatment efficiency is improved, and the wastewater treatment cost is reduced.

The invention belongs to the field of wastewater treatment, and particularly relates to an automatic aeration-type biological membrane transfer device. The automatic aeration-type biological membrane transfer device disclosed by the invention comprises a water channel, a water inlet, a sludge outlet, and a water outlet, wherein the water inlet and the water outlet are located at the lower side of the center line of a spindle, and distributed in a diagonal line on the water channel; the water inlet, the sludge outlet and the water outlet are arranged at different sides of the water channel; the device also comprises a rotating ring; the rotating ring is arranged inside the water channel through a rotating shaft; and the rotating ring is connected with a drive device. The automatic aeration-type biological membrane transfer device adopts a form of the rotating ring, drives the rotating ring to rotate by virtue of rotation of the rotating shaft, alternatively and fully contacts the air and sewage, and carries out oxygen transfer and mass transfer movement. The automatic aeration-type biological membrane transfer device is integrated with the characteristics of large hang membrane area of an elastic solid filler, high processing load, strong impact resistance and the like, and has the advantages of being simple in structure of a biological turntable, low in construction cost, simple to run and maintain, and the like.

The invention discloses a continuous flow SBR domestic sewage treatment method and a device. The device comprises a reaction container, partition plates, a drainage mechanism, a water inlet pipe, an aeration device and a control mechanism; the interior of the reaction container is divided into at least four reaction areas by the partition plates, and the four reaction areas comprise a first reaction area, a second reaction area, a third reaction area and a fourth reaction area; the bottoms of the reaction areas are communicated with each other, the water inlet pipe is longitudinally mounted inthe middle in the reaction container, and the lower end of the water inlet pipe is communicated with the lower ends of the reaction areas. The method comprises the following steps: water introductionstage, aeration stage, precipitation stage, continuous water introduction stage, and continuous water discharge stage. According to the method, the traditional SBR reaction container is subjected tospace division, the continuous flow process design is achieved through the water level pressure difference, the water inlet pipe is arranged in the middle of the reaction container for unified water inflow, the automatic control procedure is simplified, meanwhile, an anoxic stirring link is omitted, and the treatment period is shortened on the premise that it is guaranteed that effluent reaches the fifth type of water on the earth surface.