31results about How to "Stable water quality up to standard" patented technology

The invention discloses a treatment method for a garbage leachate membrane concentrated solution. The treatment method comprises the following steps: feeding the garbage leachate membrane concentrated solution into a membrane separating device to remove degradation-resistant organic substances such as humic acid in the concentrated solution, mixing the outlet water of the concentrated solution with a reverse osmosis concentrated solution, then removing scaling ions such as Ca<2+> and Mg<2+> and other inorganic substances in the concentrated solution by softening, precipitating and filtering, introducing the outlet water into the reverse osmosis membrane to further concentrate, and realizing up-to-standard release of produced water; and finally, spraying back the concentrated water back to an incinerator for incineration, evaporative crystallization or outward processing. The treatment method can be used for realizing efficient treatment of the garbage leachate membrane concentrated solution, and has the advantages of being stable in operation, high in treatment efficiency, low in operation cost, convenient to maintain and manage, and the like in comparison with the existing treatment method for the garbage leachate membrane concentrated solution.

The invention relates to the technical field of sewage treatment process control, and provides to an adaptive predictive control method for a sewage treatment process based on integrated instant learning. The method comprises the following steps of firstly determining the controlled quantity and control quantity, and collecting historical data of the sewage treatment process and constructing a historical database; then constructing a query regression vector, selecting an optimal similar learning subset under different similarity indexes, processing abnormal data, training to obtain a pluralityof groups of prediction models, and obtaining an integrated prediction model through integrated weighting; and calculating the reference trajectory, constructing an optimized control performance index, and obtaining the optimal control quantity; and finally, sending the optimal control quantity to a PLC system by a host computer to adjust a fifth zone oxygen volume regulating valve, collecting the latest group of measurement data, and updating the historical database. According to the adaptive predictive control method for the sewage treatment process based on the integrated instant learningprovided by the invention, adaptive stable and accurate control can be carried out on the sewage treatment process, the utilization rate of off-line and on-line input/output measurement data is improved, and the influence of input and output interferences and the abnormal data on control is effectively inhibited.

The invention provides spherical hydroxyapatite fluoride-removing material regenerated powder comprising natural particles and inorganic aluminum salt. The invention also provides a method for removing fluoride from underground water by using the regenerated powder. The spherical hydroxyapatite fluoride-removing material regenerated powder provided by the invention has the advantages of scientific formula, wide raw material source, and low cost. An underground water fluoride-removing method provided by the invention has the advantages of simple technology, convenient application, low cost, good fluoride-removing effect, high outlet water quality, no need of periodic regeneration, low wastewater production, low processing cost, and good popularization and application prospect.

The invention provides a high-efficiency oily sewage treatment method, comprising the following steps: pressurizing to-be-treated oily sewage, and then delivering the pressurized oily sewage into an electric flocculation tank so as to generate a polynuclear hydroxy complex, hydroxide floccules and hydrogen gas bubbles; adding gas-dissolved water into the oily sewage after electrolysis to enable the polynuclear hydroxy complex to adsorb the floccules, sediment grains and large-particle oil drops in the sewage; wrapping the oil drops and the sediment grains with micro-bubbles and hydrogen gas bubbles in the gas-dissolved water; performing cyclone separation to remove the floccules, the large sediment grains and the oil drops; and performing flotation separation on the treated sewage in a full-water low-pressure state to remove the remaining polynuclear hydroxy complex-oil drops, hydroxide floccules-suspended particles, micro-bubbles-oil drops and sediment impurities, so as to obtain purified water. The device and the method provided by the invention can be used for removing oil drops, sediments, colloids, dissolved organic matters and heavy metal ions in sewage at the same time, bacteria and viruses in water can also be killed without adding chemical reagents, and the water quality after treatment is stable and reaches the standards.

The invention provides a MANWMB (micro nano aeration wastewater microbial bioremediation) system for black and odorous river control and a control method thereof. The MANWMB system mainly comprises a river, a first reaction area, a second reaction area, a third reaction area, a fourth reaction area, a micro nano plug-flow aerator, a microbial carrier, a microbial carrier fixing rope, a microbial carrier fixing column, a stirrer, a microorganism adding device, an online monitoring system, photovoltaic power generation equipment and the like. By establishing different reaction areas, installing filler and adding microbial strains in the river, enough dissolved oxygen is provided for the river under the action of the micro nano plug-flow aerator, and the water quality is monitored in real time through the online monitoring system to finally guarantee the purification and remediation of the black and odorous river. Compared with the existing river control technology, the system provided by the invention is compact in structure and reasonable in layout, and related technological parameters can be adjusted according to the water quality so as to guarantee up-to-standard water quality. Meanwhile, since no chemical agent is used in the whole control process, the MANWMB system is an environment-friendly and efficient novel black and odorous river remediation technology.

The invention relates to an aerobic treatment method of deep-pool and shallow artificial wetland wastewater. According to the method, oxygenation is realized in a wastewater falling process; reoxygenation is carried out by converting potential energy into kinetic energy; degradation of aerobic microorganisms is carried out by utilizing a microorganism growth environment of bottom substrates of a deep pool; adsorption removal is carried out by utilizing actions of substrates in different layers of an artificial wetland; and wastewater deep treatment is realized by utilizing the absorption action of large-biomass plants. A deep-pool and shallow artificial wetland disclosed by the invention comprises the deep pool, a shallow, an S-shaped waterproof wall body and the substrates; the S-shaped waterproof wall body is positioned between the deep pool and the shallow; biological ceramsite, which is hard in substrate, large in particle diameter and high in porosity, is adopted as the substrates at the bottom of the deep pool; and the shallow is constructed by different substrates and plants at the front end of the deep pool. By means of aerobic treatment of the deep-pool and shallow artificial wetland wastewater, the wastewater treatment operation cost can be obviously reduced; the wastewater treatment efficiency and the wastewater treatment effect are increased; and organic unification of aerobic treatment and ecological treatment is realized.

The invention discloses an intelligent water purification system and anapplication method thereof. The intelligent water purification system comprises at least one level of intelligent water purification device, wherein the intelligent water purification device comprises a first detection unit, a photooxidation reactor, a filter column, a second detection unit, an intermediate valve, a purification coil pipe, a third detection unit and a tail valve through which inlet water flows in sequence. The first detection unit sends a power adjustment signal to aultraviolet lamp after detecting the inletwater and the power of the ultraviolet lamp in the photooxidation reactor is adjusted, and the second detection unit sends a gating signal to the intermediate valve after detecting the effluent of the filter column to select whether to communicate with afirst up-to-standard discharge port or apurification coil pipe inlet; the third detection unit sends a gating signal to the tail valve after detecting the effluent of the purification coil pipetoselect whether to communicate with asecond up-to-standard discharge port or anaccident discharge port. To sum up, the system adjusts the operation parameters and treatment steps according to the detected water quality, which is flexible in operation, environmentally friendly and energy-saving.

The invention discloses a denitrification and energy self-integration system for high-carbon-nitrogen-ratio wastewater. The system comprises a water inflow pump, a synchronous denitrification methanation device, an integrated anaerobic ammonia oxidation device and a composite ozone catalytic device which are sequentially connected through a pipeline; the synchronous denitrification methanation device is an upflow anaerobic sludge bed; the integrated anaerobic ammonia oxidation device comprises a homogenizing compartment, a plurality of reaction compartments and a precipitation compartment which are sequentially arranged and communicated with one another from one end to the other end; the synchronous denitrification methanation device is communicated with the homogenizing compartment through a first water outflow pipe; the composite ozone catalytic device comprises a plurality of electrocatalytic tubes which are connected in parallel; each electrocatalytic tube is communicated with an outlet in the top end of the precipitation compartment; an annular carbon cathode plate and an anode aerator arranged in the annular carbon cathode plate in a penetrating manner are arranged in each electrocatalytic tube; each anode aerator is connected with a second air compressor through an air inflow pipe; and the second air compressor is communicated with an air source. According to the systemof the invention, the treatment efficiency of the high-carbon-nitrogen-ratio wastewater is improved.

The invention designs an improved sewage treatment system. The improved sewage treatment system comprises a biological contact oxidation pond, a sedimentation pond, a multi-stage baffling bent pipe and a disinfection pond; a gill-type aerator for decomposing sewage and providing oxygen is arranged in the biological contact oxidation pond; the sedimentation pond is used for removing suspended matters; the multi-stage baffling bent pipe is used for ensuring that a liquid chemical and sewage are fully mixed; and the disinfection pond is used for carrying out plug flow and sterilization on the liquid chemical and the sewage. In the improved sewage treatment system disclosed by the invention, the biological contact oxidation pond is high in oxygenation efficiency and strong in impact load resistance; the multi-stage baffling bent pipe is additionally arranged on a water inlet pipeline of the disinfection pond; a dosing point is arranged at the front end of the bent pipe; the disinfectant and sewage are uniformly mixed under the baffling collision effect of the 10-15-stage right-angle bent pipe, and therefore, sterilization and disinfection effects are good, and it is guaranteed that effluent quality stably reaches standards.

The invention discloses a transformation method for upgrading village and town domestic sewage. According to the transformation method, treatment is carried out based on a deep treatment semi-fixed bed biochemical pool and a carbon source adding and circulating system. The transformation method comprises the following steps: sewage enters the deep treatment semi-fixed bed biochemical pool through a sewage header pipe; sewage is fed into an anoxic unit for treatment by a water impeller, then is treated by a carbon-adding anaerobic unit and an aerobic unit, and is discharged into an air flotation sedimentation tank through a water outlet tank; and a phosphorus removal agent is added in the process that the water body passes through the water outlet tank, the water body containing the phosphorus removal agent enters the air flotation sedimentation tank to be treated, then the water is discharged into a disinfection channel, and after the water body passes through a Parshall metering tank, the outlet water is detected to reach the designed discharge standard, and then the water body is discharged into a receiving water body. According to the scheme, the occupied area can be saved, the equipment is integrated, the water quality can stably reach the standard, the investment is saved, the energy consumption is low, the maintenance is convenient, and the operation is simple.

The invention relates to a reclaimed water chlorinating device of a sewage treatment system, which comprises a primary water outlet pump room, a storage tank and a reclaimed water workshop. The device is characterized in that a pre-water inlet and storage tank production pipeline of the reclaimed water workshop is connected with a first chlorinating measuring pump; a second chlorinating measuring pump is additionally arranged in a pre-pump tank of the primary water outlet pump room; and the first and second chlorinating measuring pumps are connected with a signal transducer and a PLC (programmable logic controller), thereby implementing dosing quantity automatic control. Compared with the prior art, the device can ensure the pipe network tail water to stably reach the standard by adopting the two chlorinating processes, and also ensure the long water retention time; and the sodium hypochlorite is added for delayed use, and the water supply total chlorine content can not increase, thereby avoiding adverse effects on green plant growth. The sodium hypochlorite addition amount is 1 ton/day before the improvement and 1 ton/25 days after the improvement, thereby saving 39 tons per year, saving 667 yuan of sodium hypochlorite per ton and saving the cost by 26 thousand yuan per year.

The invention discloses a dye wastewater treatment method by coupling ozonation with electrocatalytic reduction, and belongs to the field of dye wastewater treatment.The method comprises the following steps that dye wastewater is subjected to A2/O process treatment, and primary treatment wastewater is obtained; adding a catalyst MnOx/GAC into the primary treated wastewater, introducing ozone, and carrying out ozone catalytic oxidation treatment to obtain secondary treated wastewater; carrying out electrocatalytic reduction treatment on the secondary treatment wastewater; a working electrode for electrocatalytic reduction treatment is a Pd/gamma-MnO2/Ni foam composite electrode, the electrode is prepared by taking foamed nickel as a matrix, forming a gamma-MnO2 intermediate layer on the surface of the foamed nickel through a hydrothermal reaction and then chemically depositing Pd nanoparticles. According to the invention, the ozone catalytic oxidation treatment and the electrocatalytic reduction technology are coupled, so that the synergistic removal of conventional pollutants and organic halides in the dye wastewater can be realized, the effluent quality is ensured to be stable and reach the standard, and the method has a wide application prospect.

The invention discloses an acidic heavy metal wastewater treatment method and system.According to the acidic heavy metal wastewater treatment method and system, by arranging an adjusting system and a reaction system, a precipitation system capable of being automatically controlled and the like, system operation is more efficient and intelligent, and by arranging an automatic agent preparing and adding system, accurate agent adding and intelligent automatic operation in the reaction system are facilitated; the method has the advantages that chemical consumption and labor cost are reduced, the water treatment capacity is greatly improved, the sludge concentration is improved, meanwhile, the scaling phenomenon in a reaction system is greatly reduced, the scale cleaning period is prolonged by more than 50%, and the operation and maintenance cost is reduced.

The invention relates to the technical field of water treatment, and provides a water quality treatment system and a water quality treatment method. The system comprises a first wind power transmission mechanism and a biofilm water treatment system, wherein the biofilm water treatment system comprises a biofilter and an aeration component, the aeration component is driven by the first wind power transmission mechanism, an aeration quantity control component is arranged in the aeration component, and a water intake quantity control component and a water discharge quantity control component are arranged on the biofilter. According to the water quality treatment system and method, the aeration control component is utilized to control the air volume of the aeration component, and specifically comprises controlling the total aeration amount or the aeration flow rate of the aeration amount control component, and simultaneously eliminates the influence on the aeration intensity due to the wind power fluctuation as much as possible by combining the on-off control or the flow rate control of the water intake quantity control component and/or the water discharge quantity control component, thereby realizing that the oxygen supply and the pollution load in to be treated sewage in the biological filter are in a relatively balanced state, and the water quality of effluent always keeps stable and up to standard.