57results about How to "Strong impact load resistance" patented technology

The invention relates to a real-time automatically back-flushing control system of a denitrification filter pool and a running method. The system comprises an online water turbidity sensor, a nitrate sensor, a turbidity tester and a nitrate tester, and further comprises a process controller and an industrial personal computer. The online water turbidity sensor, the nitrate sensor, the turbidity tester and the nitrate tester are arranged in the denitrification filter pool. The process controller is provided with a plurality of relays of a water feeding pump relay, an intake valve relay and the like, and the relays are sequentially and respectively connected with corresponding pumps and valves in a control manner. A clean water tank is further provided with a water discharging pipe and a mud storage tank, the water discharging pipe is communicated with the upper part of a filter material layer of the denitrification filter pool, and the mud storage tank is communicated with the upper part of the denitrification filter pool. The running method of the back-flushing control system comprises the following steps of: 1, control system starting; 2, parameter treatment judgment; 3, drainage process; 4, single gas back-flushing; 5, gas-water combined back-flushing; and 6, single water back-flushing. The invention is suitable for the urban sewage advanced treatment and the nitrogenous industrial wastewater treatment, and has the advantages of perfected structure, convenience of operation, high efficiency and good effect.

The invention discloses a real-time control method for denitrification by an enhanced circulating activated sludge method, which belongs to the field of biological denitrification of sewage and is suitable for advanced treatment of urban sewage. The effect of circulating activated sludge method on nitrogen and phosphorus removal is not ideal. The steps of the present invention: open the agitator in the main reaction zone at the same time as entering the water, and carry out the denitrification process under the anoxic condition, and stop stirring when a maximum value appears on the pH value curve and an inflection point appears on the ORP curve; Oxygen is supplied to the mixed solution to degrade organic matter and nitrify nitrogenous compounds, and stop aeration when a minimum value appears on the pH curve; repeat the above steps until the end of the water inflow stage, and react with the aerobic aeration stage end of period. The following process is similar to the traditional CAST method. It enters the sedimentation, drainage, and idle stages in turn, repeating all steps in turn and discharging sludge regularly. The whole process is completed by a real-time control system, which is easy to operate, low in cost, strong in impact load resistance, and not prone to sludge bulking.

The invention relates to a method for realizing nitrogenous wastewater biological treatment process, particularly to a method for realizing short distance deep denitrogenation. The inventive method includes a short distance deep denitrogenation starting-up stage, a stabilizing stage and a cooling stage; and comprises the steps of feeding water, aerating, denitrifying, settling, draining, sludge discharging, and idle running. In the short distance deep denitrogenation starting-up stage, the system temperature is 25 DEG C, the mean sludge retention time is 15 days, and the number of operating periods is 90-95; in the stabilizing stage, the system temperature is 25 DEG C, the sludge retention time is 15 days, and the number of operating periods is 60-65; and in the cooling stage, the system temperature is adjusted to 18 DEG C, the sludge retention time is 15 days, and after 30-35 operating periods, the temperature is adjusted to 11 DEG C, and the sludge retention time is 20 days. The inventive method has the advantages of good denitrogenation effect, high degree of automation, low energy consumption, and capability of stable operation under low temperature conditions.

The invention relates to a landfill leachate high-performance denitrification system and denitrification process thereof. A movable bed membrane bio-reactor is combined with a denitrification pool ofthe active sludge membrane bio-reactor. For the landfill leachate with sufficient carbon source on the front end, the landfill leachate high-performance denitrification system comprises a core structure of the denitrification pool combined with the movable bed membrane bio-reactor, the denitrification pool and a hyperfiltration membrane; for the landfill leachate with insufficient carbon source onthe front end, the landfill leachate high-performance denitrification system comprises a primary denitrification pool, the denitrification pool combined with the movable bed membrane bio-reactor, a secondary dentrification pool and a hyperfiltration membrane; and for the landfill leachate with high denitrification requirement, the landfill leachate high-performance denitrification system comprises a core structure of a front-mounted denitrification pool, a primary denitrification pool, a rear-mounted denitrification pool combined with the movable bed membrane bio-reactor, a secondary denitrification pool and a hyperfiltration membrane. By sufficiently utilizing the existing carbon source, the ammonium nitrogen and total nitrogen can be significantly removed, the operation expense can be reduced, an effect of continuity, stability, high performance and low operation cost can be achieved, and the landfill leachate high-performance denitrification system and denitrification process thereof are suitable for treating high-ammonium-nitrogen waste water of the landfill leachate.

The invention relates to a method and a device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles, and belongs to the field of sewage. The method comprises the following steps of respectively embedding a WPU (water-borne polyurethane) material by separated denitrification bacteria and anaerobic ammonia oxidation bacteria, putting the denitrification embedding particles into a flow-separated ball, putting anaerobic ammonia oxidation embedding particles into a Pall ring or into water in a floating state, and setting the denitrification embedding particles and the anaerobic ammonia oxidation embedding particles into an incomplete mixing state. The device comprises a water bath constant-temperature system, a sealing device, the flow-separated ball, the Pall ring and the like. The method and the device have the advantages that after embedding of the denitrification bacteria and anaerobic ammonia oxidation bacteria, the influence to the activity is avoided, the amounts of the denitrification bacteria and the anaerobic ammonia oxidation bacteria in the system are increased, the loss of bacteria amounts is reduced, the problems of slow growth of the anaerobic ammonia oxidation bacteria and stricter growth environment requirement in an anaerobic ammonia oxidation technology are solved, and the denitrifying efficiency of the system is improved by combining a nitrifying mode; the two types of embedding are set into the incomplete mixing state in the device, and respective feeding ratios can be flexibly adjusted according to the water quality.

The invention discloses a step-feed CAST nitrite denitrifying phosphorus removal method and a process control device thereof and belongs to the technical field of SBR and modified process sewage biologic denitrification thereof. The device comprises a selector, a main reaction area, a water inlet pump, a stirrer, a submersible mixer, a return sludge pump, an aerator, an air compressor, a water decanter, a drain valve, a mud valve and a real-time control system. By adopting integration of a multiple-water inlet running mode and a real-time control system, an organic carbon source in the original sewage is furthest utilized and furthermore, the ammoxidation, denitrifying dephosphatation and phosphorus release time in each stage is scientifically and reasonably distributed. The anaerobic stirring time is increased and operation based on a variable-duration anoxic/aerobic mode is adopted, the anoxic phosphorus uptake effect of the selector in the aerobiotic time and the anoxic phosphorus uptake effect of the main reaction area in the anoxic time are reinforced, and the anaerobic stirring time and the aerobic aerating time are controlled by a real-time process control strategy.

The invention provides a comprehensive deep treatment method for wastewater. The method comprises steps of: (1) feeding mixed wastewater into a regulating tank and performing aeration and stirring to make the water quality and the water mount of the mixed waste water uniform; (2) piping the wastewater in the step (1) into a hydrolytic acidification-anaerobic-aerobic biological treatment system and performing biochemical treatment; and (3) subjecting discharged water of an oxidation ditch to a biochar reaction to perform deep treatment, and discharging after filtration by a biochar filtering tank. Organic matters, ammonia nitrogen, and the like which are difficult to biodegrade are absorbed by the biochar filtering tank and degraded slowly. According to the method, a sulfate reducing bacteria and a hydrolytic acidification bacteria are successfully cultured in a primary anaerobic reactor under a condition that COD/SO<4><2-> is smaller than 0.5, thus achieving partial removal of the SO<4><2-> and degradation of the macro-molecule organic matters and reducing the COD.

The invention discloses a pesticide wastewater treatment process and a treatment device thereof. A process system comprises a Fenton oxidation tank, a regulating tank, a hydrolysis acidification tank,a pre-anoxic tank, a CASS tank, an efficient sedimentation tank, an ozone catalytic oxidation treatment unit, a biological aerated filter and a disinfection tank. The invention aims at the characteristics of high organic matter concentration, complex components, high chromaticity, strong toxicity, extremely poor biodegradability and the like of pesticide wastewater. A combined process combining anovel advanced oxidation technology, a traditional physical and chemical process and a biological technology is adopted, the removal effect on refractory organics is good, the deodorization and decoloration capacity is high, and effluent can meet the first-grade A emission standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant GB18918-2002 and is discharged into a receiving water body.

The invention discloses a refuse leachate treatment method. The refuse leachate is pretreated preliminarily by using an adsorption column filled with fillers of natural zeolite and boron mud so that the concentration of ammonia nitrogen in the refuse leachate is reduced, then the treated refuse leachate is subjected to two-stage aerobic aeration and anoxia stirring by using a water injecting delaying sequencing batch reactor, and finally the treated refuse leachate is treated deeply by using constructed wetland to reach the standard before being discharged. The refuse leachate treatment method disclosed by the invention has the advantages of high removal efficiency of ammonia nitrogen and organic matters, low treatment cost, stable quality of treated refuse leachate and strong impact load resisting capacity. In addition, the generated surplus sludge can be recovered and used as a feed or compost, the harm of the refuse leachate to the human health can be prevented effectively, the problems that the existing refuse leachate treatment process is low in nitrogen removal efficiency, high in treatment cost and poor in stability and can not adapt to the quality change of the refuse leachate flexibly can be solved. The refuse leachate treatment method disclosed by the invention can be widely popularized and applied to the treatment of refuse leachate in the refuse landfill.

The invention discloses an oily sewage treatment method which is characterized by comprising the following steps: treating oily sewage by using activated sludge; treating the treated oily sewage by using a biological membrane. The invention also discloses an oily sewage treatment system which is characterized by comprising a biochemical pool which is filled with activated sludge and is used for carrying out activated sludge treatment on oily sewage; a biological filter tank which contains a biological membrane and is used for carrying out biological membrane treatment on the oily sewage; a biochemical tank which is communicated with the biological filter tank. The invention also discloses a construction method of the oily sewage treatment system, which is characterized by comprising the following steps: domesticating activated sludge; preparation of biofilms. According to the treatment method, the yield of the sludge is greatly reduced while efficient and advanced treatment of the oily sewage is guaranteed, the water quality is stable, and the method belongs to a green and environment-friendly treatment method.

The invention relates to a printing and dyeing wastewater treatment technique. The printing and dyeing wastewater treatment technique includes: feeding desizing wastewater into an adjusting pool prior to lifting to an anaerobic reactor through a pump, and allowing supernatant to flow into a settling pool after the desizing wastewater is treated in the anaerobic reactor; allowing comprehensive wastewater to enter the adjusting pool for settling via a pipeline, lifting the supernatant to the anaerobic reactor via the pump, and allowing the wastewater subjected to treatment of the anaerobic reactor to flow into an A/O pool via a primary settling pool; allowing the wastewater to flow into a secondary settling pool via the A/O pool, arranging a micro-electrolytic reactor in a water outlet of the secondary settling pool, allowing the treated wastewater to flow into a dosing pool and then into a tertiary pool via the dosing pool, sending sludge in the tertiary pool into the adjusting settling pool, and allowing the supernatant to enter an integrated XHOC pool, then a wastewater end settling pool prior to a sand filter tank via an oxidation pond, wherein treated water flowing from the sand filter tank is standard discharge water. The printing and dyeing wastewater treatment technique has the advantages of low energy consumption, high efficiency and stable effluent quality, and the technique is suitable for treatment of organic pollutants with various concentrations, simple in operation and convenient in running.

The invention discloses a power supply circuit based on multiple parallel input power supplies and a power supply control method. The power supply circuit comprises multiple parallel input power supplies and a control circuit, wherein each input power supply is connected to a low-voltage power supply capacitor decoupling circuit through a one-to-one corresponding BOOST circuit, the low-voltage power supply capacitor decoupling circuit is connected to a push-pull boost circuit, the push-pull boost circuit is connected to an output support circuit, and the output support circuit is used for supplying power to a load; and the control circuit is respectively connected with each BOOST circuit and the push-pull boost circuit. According to the invention, multiple different types of input power supplies are allowed to work simultaneously and support dynamic adjustment, that is, different input power supplies adopt corresponding closed-loop control modes, and bus voltage parameters are automatically adjusted. The power supply circuit has the advantages of being capable of adapting to input power supplies with different voltage parameters, optimizing the energy conversion efficiency, and being compatible with common household power storage and generation devices.

The invention discloses an integral efficient sewage treatment system. The integral efficient sewage treatment system comprises a residual separation lifting tank, an efficient denitrification reactor, a high-load bioreactor, a dephosphorization tank and a filtering and disinfection tank. The integral efficient sewage treatment system is low in construction cost, low in operating cost, high in domestic sewage treatment efficiency and small in floor space, effluent quality stably reaches the first level A standard or above, and problems of high investment cost, high operating cost, large floorspace, low domestic sewage treatment efficiency and quality instability of treated wastewater in the prior art are solved.

The invention discloses a stripping tower, which comprises a reaction column, wherein a filler is filled in the middle of the reaction column; a sprayer is arranged at the top of the reaction column and is connected with a submersible pump inside a water tank; a gas inlet is additionally arranged in the middle of the reaction column and is connected with a gas pump through a gas flowmeter; and a water outlet is arranged at the bottom of the reaction column. According to the invention, the stripping tower is small in occupied area, simple in structure, strong in resistance to compact load and convenient in assembly; and high-concentration ammonia nitrogen in toxic wastewater of garbage leachate can be effectively removed in a short time, so as to provide a reliable technology for a standard treatment for the ammonia nitrogen of the wastewater.

The invention discloses a waste transfer station leachate treatment integral facility which comprises a treatment zone and an equipment room, wherein the treatment zone comprises a multi-stage anaerobic pool, an anoxic pond, an aerobiotic pond, a membrane biological reaction tank and a settling pond which are sequentially arranged in a communicated manner according to treatment procedures; a membrane biological reactor is arranged in the membrane biological reaction tank; a lifting pump, a backflow pump, a water generation tank, a water generation pump, an electric control cabinet, a cleaningfilter, a chemical tank, a dosing pump, a backwash pump, a fan for aerating the aerobiotic pond and the membrane biological reaction tank, and a temperature adjusting device for controlling temperatures in the treatment zone are arranged in the equipment room. By adopting the facility, the problems of insufficient floor spaces in a residual community and unstable water amounts can be avoided; dueto adoption an integral treatment process, leachate can be deeply treated, requirements of up-to-standard emission of effluents can be met, and the facility has the advantages of being low in operation energy consumption and high in treatment efficiency.

The invention discloses an industrial wastewater treatment system for a thermal power plant, which is characterized in that it comprises a wastewater storage tank, a wastewater delivery pump, a pH adjustment tank, a reaction tank, a solid contact clarifier, a high-efficiency quicksand filter, and a neutralization tank connected in sequence And the drainage tank, the bottom of the solid contact clarifier is connected with the sludge treatment system. The advanced solid contact clarifier and high-efficiency quicksand filter are used to double remove suspended matter, so that the suspended matter in the treated wastewater is as low as 10ppm and can be reused. At the same time, the high-efficiency quicksand filter used in this system is a uniquely designed high Technology and environmental protection products, it adopts the principle of upflow fluidized bed filtration and a single homogeneous filter material, filtration and sand washing are carried out at the same time, without shutting down for flushing or backwashing, and the ingenious sand lifting and sand washing structure replaces the traditional high-power backwashing system , not only greatly reduces energy consumption, but also greatly reduces the auxiliary valves and piping systems of the system, making operation, operation and maintenance easier.

The invention relates to urea-containing printing and dyeing wastewater processing equipment and its processing method. The equipment comprises a regulating tank, an oxidation reaction tank, a primary sedimentation tank, a hydrolysis acidification tank, an oxidation ditch and a secondary sedimentation tank. The regulating tank, the oxidation reaction tank, the primary sedimentation tank, the hydrolysis acidification tank, the oxidation ditch and the secondary sedimentation tank are successively connected to form integrated processing equipment. The urea-containing printing and dyeing wastewater processing equipment and its processing method combine advantages of coagulation, decoloration and nitrogen removal processing. After printing and dyeing mother liquor wastewater is treated by the processing method, ammonia nitrogen, chroma and COD can be effectively degraded. Processing can meet the requirement of discharging into a pipe network. The equipment and the method have low processing cost and are simple to operate and easy to control.

In the invention, dissolved oxygen DO, redox potential ORP and pH value is used as fuzzy parameters to keep realized short range nitrofy denitrify processing, not only the phenomenon that short range nitrofy transfers to total range nitrofy produced by long time aeration is avoided, but also has advantages of complete nitrofy and denitrofy. The other characteristic is to combine short range nitrofy denitrofy processing and SBR together.

The invention discloses a high-ammonia-nitrogen waste liquid purification process. A purification system for the process mainly comprises a grating, a sedimentation tank, a heat exchanger, a stripping tower and an absorption tower. The purification method comprises the following steps of: (1) pretreating the high-ammonia-nitrogen waste liquid through the grating and the sedimentation tank to separate impurities in the waste liquid, and then adding alkali to adjust the pH value; (2) heating the waste liquid in the step (1) in the heat exchanger; (3) enabling the waste liquid heated in the step (2) to enter the stripping tower to be in contact with circulating gas for mass transfer, efficiently stripping NH3 under a high-temperature condition, enabling the stripped waste liquid to enter the bottom of the tower to be discharged, or recycling the waste liquid after deep treatment; (4) enabling the circulating gas rich in ammonia nitrogen in the step (3) to enter the lower part of an absorption tower, transferring NH3 in the gas from a gas phase into sprayed absorption liquid under a gas-liquid phase balance condition, and reacting with acid in the absorption liquid to generate ammonium salt; and meanwhile, enabling the circulating gas becoming clean again to enter the stripping tower to be recycled; and (5) discharging the absorption liquid from the bottom of the tower, crystallizing, dehydrating and drying to obtain a solid product, thereby completing the recovery of ammonia nitrogen resources.

The invention discloses a small and medium-sized continuously-enhanced short-process low-energy-consumption decontamination system comprising processes of first-stage A/O, second-stage A/O, disinfection and sludge drying. Compared with an existing decontamination system, the decontamination system disclosed by the invention has relative large changes in structures, processes, application and utility range. The decontamination system comprises the following processes: performing pre-treatment (grille tank-adjustment grit chamber) on sewage to remove scums, performing dephosphorization, nitrification and bio-film reaction on a first-stage A/O part (anaerobic tank-first-stage biological contact oxidation tank), performing denitrification and bio-film reaction on a second-stage A/O part (anoxic tank-second-stage biological contact oxidation tank), and finally precipitating, disinfecting and discharging on standards, wherein sludge is discharged by virtue of unpowered hydrostatic pressure. The system disclosed by the invention is small in floor area, low in investment, less in running management cost, simple in maintenance and strong in impact load bearing capacity, can adopt modular construction, is short in construction period, and reliable in engineering quality; and the effluent is stable, and can exceed the first-grade standard B of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).