605results about "Water treatment flow arrangements" patented technology

A water distribution system including a water storage tank, a water treatment unit, a diverter valve, and interconnecting water conduits arranged so that the same water treatment unit can be used to treat water supplied from a fill port to the storage tank during a fill operation, as well as water leaving the storage tank for supply to one or more points of water use during a supply operation. A diverter valve is provided which is movable between a fill position wherein the water treatment unit is in fluid communication with the fill port and not the point of water use device, and a supply position wherein the water treatment unit is in fluid communication with the at least one point of water use device and not the fill port. When the diverter valve is in the fill position, water supplied to the fill port can thus flow through the diverter valve and to the water treatment unit for treatment then to the storage tank for storage. When the diverter valve is in the supply position, the water from the storage tank can be delivered using means for pressurizing water to the same treatment unit for treatment, then through the diverter valve and to the at least one point of water use device.

The invention provides a brine concentration method for sea salt production and belongs to the technical field of sea salt production. The method comprises steps as follows: seawater enters a pretreatment device for removal of impurities and enters a nanofiltration device for removal of divalent ions, nanofiltration producing water enters a multi-stage high-pressure reverse osmosis device for highconcentration, and high-concentration saline water is prepared; part of high-pressure reverse osmosis producing water is subjected to low-pressure reverse osmosis for preparation of pure water, and the other part of water flows back to a seawater desalting plant. The multi-stage high-pressure reverse osmosis device is formed through series connection of high-pressure reverse osmosis membrane groups in a form of continuous section groups, producing water of each section of the high-pressure reverse osmosis membrane groups flows back for use or enters a pure water preparation process, concentrated water of each section of the high-pressure reverse osmosis membrane groups enters the downstream high-pressure reverse osmosis membrane groups, the purpose of high concentration is finally achieved through continuous series connection, and strong brine is prepared. According to the method, more efficient concentration is realized, factory brine preparation is realized, the tedding area for salt making is greatly reduced, graded reuse of producing water is realized, utilization efficiency of the producing water is improved, and treatment cost is reduced.

The invention relates to a coal gasification black water and grey water treatment system with high heat recovery efficiency. The treatment system is characterized in that grey/black water from a gasification segment is subjected to three-stage flash evaporation treatment, namely, high-pressure flash evaporation, low-pressure flash evaporation and vacuum flash evaporation, and direct heat exchange is performed through a hot water tower. In the coal gasification black water and grey water treatment system disclosed by the invention, direct heat exchange equipment is provided, so that indirect heat exchange equipment is omitted, the heat recovery efficiency is increased, and the energy utilization rate is increased; meanwhile, the equipment quantity and work flow are simplified on the whole, so that the equipment blocking risk is lowered, and the equipment overhauling workload is greatly lowered. The invention further provides a coal gasification black water and grey water treatment method with high heat recovery efficiency.

The invention belongs to the field of biotreatment of wastewater or sewage, and particularly relates to an improved A<2>O and sulphur autotrophy joint nitrogen and phosphorus removal reactor and a sewage treatment method. The reactor comprises an improved A<2>O process section and a sulphur autotrophy process section, wherein the improved A<2>O process section comprises a pre-anoxic zone, an anaerobic zone, an anoxic zone, an aerobic zone and a secondary sedimentation tank. The nitrogen removal efficiency of the reactor reaches more than 95% due to the combination of heterotrophism-autotrophicdenitrification, and the reactor is better adaptive to the low-carbon nitrogen ratio municipal sewage. In addition, the proportion of step-feed water entering the anaerobic zone is properly increasedto guarantee the biological phosphorus removal effect.

The invention discloses a device for strengthening anaerobic ammonia oxidation and nitrogen removal process. The device comprises a raw-water storage tank, a feed pump, a biochemical reactor and a continuous flow reactor of a sediment tank; the continuous flow reactor is connected with a PLC (programmable logic controller); the biochemical reactor contains an anaerobic zone, an aerobic zone and an anoxic zone; the urban raw-material storage tank is communicated with a water inlet pipe of the biochemical reactor through the feed pump, and sewage is sequentially connected with the anaerobic zone, the aerobic zone, the anoxic zone and the sediment tank through the water inlet pipe; the sediment tank is subjected to sludge and water separation, and a supernatant is discharged as yielding water; in the anaerobic zone, activated sludge absorbs an organic matter synthesized internal carbon source degraded into the water; in the aerobic zone, coupling of short-cut nitrogen removal and anaerobic ammonium oxidation is realized by controlling dissolved oxygen, and nitrogen removal rate of the system is increased.

The invention relates to a sequencing-batch real-time control sewage treatment device which mainly comprises a water inlet pump, a biological selection pool, a sequencing-batch sewage treatment pool, a chemical adding device, a dosing pump, a water decanter, an air blower, a sludge concentration meter, an ultrasonic liquid level meter, a pH meter, a DO (dissolved oxygen) meter, an ORP (oxidation-reduction potential) meter, an ammonia nitrogen online monitoring instrument, a DA/AD data converter, a PLC control cabinet, and a remote control computer, wherein the water inlet pump is sequentially connected with the biological selection pool and the sequencing-batch sewage treatment pool; and the sludge concentration meter and the ultrasonic liquid level meter are arranged in the sequencing-batch sewage treatment pool, the pH meter, the DO meter, the ORP meter and the ammonia nitrogen online monitoring instrument are arranged on the side wall of the sequencing-batch sewage treatment pool, and all the devices are connected with the DA/AD data converter by cables, and the PLC control cabinet is connected with the remote control computer via an Ethernet. The reaction completion time is judged according to the feature points of instrument detection data, and sludge bulking and electric energy dissipation caused by insufficient aeration or overlong aeration time are effectively prevented by using real-time control.

The invention discloses a self-circulation anaerobic reactor. The self-circulation anaerobic reactor comprises a tank body, a water distributor, a sewage return pipe, a marsh gas flow guide device, an isolating inner cylinder, a three-phase separator and the like. The tank body is internally divided into several regions which are a mixing region, a main reaction region, a main marsh gas separating region, an auxiliary reaction region and a solid, liquid and gas three-phase separating region (containing a setting region) through the devices. Inner circulation is automatically formed by sewage in the regions under the raising action of marsh gas. As inner circulation is formed, rising flow speed of the main reaction region is increased, the contact area between organic matter in the main reaction region and anaerobic biological bacteria is increased, and water quality purification speed is increased. The concentration of input water is reduced by the self circulation, the concentration gradient of organic acid in a reactor is reduced, the living environment of the anaerobic biological bacteria is improved, and the degradation rate of the anaerobic biological bacteria is increased. As the self-circulation reactor is ingenious in structure, the self-circulation amount can be several times that of an existing anaerobic reactor. Output water is high and stable in quality, the requirement for designing anaerobic water output can be met without multi-level arrangement.

The invention discloses a biological reaction sewage treatment method which comprises the following steps: (1) pretreating industrial sewage by a sewage pretreatment plant, and introducing the pretreated sewage into a mixed distribution reservoir of a comprehensive sewage treatment plant; (2) introducing domestic sewage into the mixed distribution reservoir of the comprehensive sewage treatment plant; (3) mixing the pretreated industrial sewage and domestic sewage, standing for 15 minutes, and equally distributing the sewage into AT-BC units by a water distribution system; and (4) sending the mixed sewage in the step (3) into the AT-BC units, and carrying out adsorption and primary degradation on organic matters and ammonia nitrogen in the sewage by using Bacillus carried in the AT-BC units. The biological reaction sewage treatment method overcomes the defects in the prior art, so that the water quality reaches the standard and is reliable and stable.

The invention discloses a vertical low-energy consumption and internal-circulation integral sewage treatment apparatus. The apparatus comprises a gas stripping zone, an aerobic zone, an anoxic zone and an anaerobic zone which are sequentially arranged from top to bottom, the gas stripping zone is provided with a reflux quantity regulator, a center cylinder is arranged under the reflux quantity regulator, the aerobic zone is provided with a filler, an aeration pipeline assembly is arranged under the aerobic zone, the baseboard of the anaerobic zone is provided with a water inlet tube, a three-phase separator is arranged between the anaerobic zone and the anoxic zone, a circulating pump is arranged between the three-phase separator and the bottom of the anaerobic zone, two sides of the gas stripping zone are provided with tilted plate assemblies used for removing mud, and filler layers are arranged above the tilted plate assemblies. The problems of many devices, tedious operation, large occupied area and complex filter structure in the prior art are solved in the invention due to the simple structure of the tilted plate assemblies.

The invention relates to a desalting system and method. The desalting system comprises a first electric separation device capable of receiving first fluid, performing desalting for the first fluid and receiving second fluid so as to remove ions coming from the first fluid. The pH value of the first fluid is larger than 7, and the pH value of the second fluid is smaller than 7.

The invention discloses a modified intensive aeration and vein type biofilter. The modified intensive aeration and vein type biofilter comprises a biofilter body (1). A water distribution region (6), a supporting layer (5), a biological filler region (3) and a coping water layer region (4) are arranged in the biofilter body. An intensive aeration and cyclic guiding device (2) is arranged in the biofilter body. The intensive aeration and cyclic guiding device comprises an inner guiding barrel (2-1), an outer guiding barrel (2-3) is arranged outside the inner guiding barrel, a breather pipe (13) is arranged at the upper end of the outer guiding barrel, and a water suction guide pipe (2-2) is arranged between the outer guiding barrel and the inner guiding barrel. The problems caused by the fact that the sewage flowing direction and the gravity direction of a traditional biofilter are the same are solved; low-concentration sewage cyclically treated once or more times can be fully mixed with original sewage, then the mixture is subjected to biological oxidation, the treatment effect is improved, and the biolfilter body has high adaptability to sewage with higher concentration and toxicity.

The invention discloses an anaerobic sewage treatment device and an anaerobic sewage treatment process. The anaerobic sewage treatment process includes inoculating anaerobic digestion sludge and anaerobic ammonium oxidation sludge into an anaerobic membrane bioreactor and an anaerobic ammonium oxidation reactor; allowing wastewater to sequentially flow through the anaerobic membrane bioreactor, a denitrification reactor and the anaerobic ammonium oxidation reactor, then draining water and allowing a part of water to flow back to the denitrification reactor. The anaerobic sewage treatment device and the anaerobic sewage treatment process have the advantages that biogas energy can be recycled by the anaerobic membrane bioreactor, organic pollutants can be removed by the anaerobic membrane bioreactor, effects of removing nitrogen by denitrification and pre-selecting floras can be realized by the denitrification reactor, total nitrogen can be removed by an anaerobic ammonium oxidation pond, and the nitrogen removal aeration quantities can be effectively reduced by the anaerobic ammonium oxidation pond; the anaerobic sewage treatment device and the anaerobic sewage treatment process can be used for high-concentration organic wastewater, and accordingly the purposes of reaching mainly anaerobic carbon-nitrogen standards and recycling biogas can be achieved; the anaerobic sewage treatment device and the anaerobic sewage treatment process also can be used for treating low-concentration organic wastewater, and accordingly the aeration quantities required in treatment procedures can be reduced to a great extent.

The invention discloses a device and method for realizing deep nitrogen and phosphorus removal of urban sewage through sludge double reflux AOA and belongs to the field of sewage treatment. The device mainly comprises a raw sewage tank, a sludge double reflux AOA reactor composed of anaerobic/anoxic/aerobic grids and a sedimentation tank. The device mainly comprises the raw sewage tank and the sludge double reflux AOA reactor. The sludge double reflux AOA reactor is orderly divided into an anaerobic section, an anoxic section and an aerobic section. In the anaerobic section, COD in domestic sewage is used for synthesis of an internal carbon source PFAs and simultaneously, anaerobic phosphorus release is carried out. The mixed solution obtained by the anaerobic section enters the aerobic section and undergoes a shortcut nitrification reaction. The reaction product enters the anoxic section and undergoes an internal carbon source denitrification reaction. The NOB is subjected to starvation treatment by gradually increasing the load of ammonia and nitrogen in inlet water and the long-term anaerobic/anoxic treatment so that urban sewage short-range nitrification internal source denitrification is realized and deep nitrogen and phosphorus removal are realized. The device and method are practicable and can solve the problem that the continuous flow short-range nitrification is difficult.

The invention provides an annular radial-flow negative-pressure suction internal loop photoelectric catalytic reactor, comprising a photoelectric catalysis oxidation reaction system and an annular radial-flow negative-pressure suction internal loop water inlet system, wherein the photoelectric catalysis oxidation reaction system comprises a plate-type tubular DSA anode and a mesh-type tubular titanium cathode; a granular photoelectric catalyst is filled between the anode and the cathode; an ultraviolet generator is arranged in the mesh-type tubular titanium cathode; the annular radial-flow negative-pressure suction internal loop water inlet system is arranged at the lower part of the photoelectric catalysis oxidation reaction system; a liquid injection pipe is arranged at the center of the water inlet system; a plurality of pipelines with adjustable lengths are arranged at a bottleneck of the liquid injection pipe; the liquid injection pipe is communicated with an annular radial-flow water feeder which is densely distributed with constant-diameter round holes in a bottom region of the reactor; a gas injection pipe is arranged at the top of the reactor; an air inlet of the gas injection pipe is connected with a compressed air pump; an air outlet is connected with the atmosphere; the bottleneck is connected with an exhaust pipe at the top of the reactor; and hydrogen generated in the reactor is diluted and discharged.

The invention relates to a cylinder type integrated sewage treatment device which comprises a reaction tank, a filtering membrane set, a suction pump, a plurality of bubble releasers, an air dissolving system and a stirrer, wherein the reaction tank has a cylinder structure; the reaction tank is divided into a mixing area, a settling area, a flow guiding area and a filtering reaction area from center to periphery in turn; a stirring blade is arranged in the mixing area; the stirring blade is used for floating the sludge flowing back from the bottom of the settling area and the filtering reaction area; the micro-flocculated grains, which are newly generated in the manner of mixing the colloid, oil, suspended solids and coagulant in sewage, can be quickly adsorbed to the suspending sludge and then enter into the settling area for settling; the sewage treatment device has an excellent sludge refluxing effect and low energy consumption of water flow; the bubble releasers are distributed at the bottom of the filtering reaction area; the filtering membrane set is distributed in the filtering reaction area; the suction pump is connected with a water draining end of the filtering membrane set through a pipeline and is used for pumping the treated water; and the discharged water is high in quality and the effect is excellent.

Process for treating water to be treated by clarification comprising an adsorption of a portion of clarified water and a clarification of a mixture of adsorbed clarified water and water to be treated The invention pertains to a process for treating water to be treated comprising:

• • a step for clarifying said water to be treated producing a clarified water;
  • a step for placing a part of said clarified water in contact with a powdered adsorbent reagent producing a mixture of clarified water and powdered adsorbent reagent;
  • a step for mixing said mixture with said water to be treated;
  • a step for discharging the remainder of the clarified water.

The invention relates to an ultrapure water preparation system and a vehicle urea solution preparation system, and relates to the technical field of ultrapure water preparation. An ultrapure water preparation system includes a pretreatment device, a reverse osmosis treatment device and a polishing resin treatment device connected in sequence. The pretreatment device includes a filter assembly. The reverse osmosis treatment device includes a reverse osmosis treatment unit or a plurality of reverse osmosis treatment units arranged in series and parallel; each reverse osmosis treatment unit includes a RO reverse osmosis membrane element or a plurality of RO reverse osmosis membrane elements. The polishing resin treatment device includes a polishing resin filter, a product water monitoring unit and an ultrapure water collection unit connected in sequence through pipelines. A vehicle urea solution preparation system includes the above-mentioned ultrapure water preparation system. The invention is mainly used to realize the miniaturization and automation of the ultrapure water preparation system, and stabilize the quality of the prepared ultrapure water.

The invention discloses a high-salt waste water treatment method. According to the high-salt waste water treatment method, concentration of high-salt waste water is carried out via membrane distillation; an obtained membrane distillation concentrated water is taken as a driving liquid of forward osmosis; the membrane distillation concentrated water is diluted via continuous concentration of forward osmosis feeding liquid collateral circulation raw water, when the concentration of the diluted membrane distillation concentrated water is equal to a certain concentration, the membrane distillation concentrated water is recycled to a membrane distillation unit for concentration treatment; and the above steps are repeated, so that deep concentration of the high-salt waste water is realized, and water of the high-salt waste water and forward osmosis raw water is recycled as far as possible. The high-salt waste water treatment method can be used for processing high-salt waste water, and can also be used for concentration treatment of river water, brackish water, seawater, surface water, municipal wastewater, petrochemical wastewater, landfill leachate, and solutions containing medicines and protein. No impressed pressure or little impressed pressure is needed for treatment; the high-salt waste water treatment method is simple and convenient; operation is simple; and operation cost is low compared with multiple-effect evaporation.

The invention discloses a bicirculating nitrogen and phosphorus removal wastewater treatment system and method. The system is formed by serially connecting a membrane-sludge coupling pool, a settling pool, an aerobiotic nitration biofilter pool and a chemical phosphorus removal pool in sequence; a sludge return apparatus is arranged between the settling pool and the membrane-sludge coupling pool; and a nitration solution return apparatus is arranged between the aerobiotic nitration biofilter pool and the membrane-sludge coupling pool. According to the system, wastewater treatment is realized through a nitrogen and carbon removal hydrolysis reaction, a sludge-water separation reaction and a carbon removal nitration reaction; the problems of insufficient utilization of raw water carbon sources, complex pretreatment and frequent back-flushing of a conventional biological aerated filter pool, and the like can be effectively solved; the nitrogen and phosphorus removal effect is improved; and the system and the method have the characteristics of low cost, biological multiplication and the like.

The invention discloses a device for treating biurea condensation sewage generated from preparation of an ADC (Azodicarbonamide) foaming agent with a urea method and a use method of the device, relates to a sewage treatment device and a use method thereof, and aims to solve the problem that COD (Chemical Oxygen Demand) in effluent of the biurea condensation sewage generated when the ADC foaming agent is prepared by using the urea method is hard to meet standards. The device consists of an evaporation crystallizer, a high-temperature salt bath decomposition and gas absorption system and a pressure hydrolysis-flash evaporation system. The use method disclosed by the invention comprises the following steps: feeding sewage into the evaporation crystallizer, performing cooling crystallization on concentrated liquid, feeding into an ammonia distillation tower for ammonia distillation, discharging the bottom liquid of the ammonia distillation tower into the pressure hydrolysis-flash evaporation system for decomposition treatment, and feeding salt generated from evaporation crystallization into the high-temperature salt bath decomposition and gas absorption system for purification treatment. By adopting the device and the use method, urea and hydrazine hydrate of the ADC condensation sewage can be recycled, sodium chloride can be purified, the water circulation utilization rate can be increased, and standards of indexes such as COD in the effluent can be met.

The invention provides efficient integrated sewage treatment equipment. The efficient integrated sewage treatment equipment comprises an anaerobic zone, an anoxic zone, an aerobic zone and a sedimentation zone which are communicated in sequence, and further comprises a nitrification liquid return mechanism, a sludge return mechanism and a gas stripping device, wherein the nitrification liquid return mechanism is used for returning a mixed liquid in the aerobic zone to the anoxic zone; the sludge return mechanism is used for mixing sludge returned to the sedimentation zone with sewage in a water inlet pipe, and then guiding the mixture to flow into the anaerobic zone; the nitrification liquid return mechanism comprises a mixed liquid return gas stripping zone communicated with a return opening in the aerobic zone; the sludge return mechanism comprises a sludge return gas stripping zone communicated with a sludge discharge opening in the sedimentation zone; the gas stripping device is used for lifting a mixed liquid in the mixed liquid return gas stripping zone to climb over a corresponding partition to return to the anoxic zone, and lifting sludge in the sludge return gas stripping zone to climb over a corresponding partition to be mixed with incoming water by aeration. Therefore, the transportation through pipelines or ditches is not needed, the problem of blockage caused by sediments in the pipelines is solved, and then the efficient integrated sewage treatment equipment is more convenient and rapid in operation management.