1378 results about "Sand filter" patented technology

Methods and tools are described to reduce sanding including the steps of fracturing the cement sheath in a localized zone around the casing and having the fractured zone act as sand filter between the formation and openings in the casing, with the openings being best pre-formed but temporarily blocked so as to allow a conventional primary cementing of the casing. The fracturing step can also be used for remedial operation to reopen blocked formation or screens.

A portable water treatment system includes at least one sub-system to treat water including a flocculation system, a chlorination system, and a bio-sand filter system. The water treatment system may include multiple sub-systems for treating water that feed into one another. The sand filter system may include a mini bio-sand filter, a foam filter, or a pressed block filter. The flocculation system may include a tank bottom that urges settling particles toward a sump and a ladle that removes settled particles. A manual pump or siphon may be included in the water treatment system.

The invention relates to a method for recycling titanium dioxide in a waste SCR (Selective Catalytic Reduction) denitration catalyst. The method comprises the following steps of: firstly removing dust from the waste denitration catalyst, pulverizing, then adding concentrated sulfuric acid so as to carry out acid hydrolysis on the waste denitration catalyst to obtain a concentrated titanyl sulfate solution, and adding water for dilution; adding a non-ionic emulsifier serving as a flocculating agent and a sulfonate surface active agent or a polycarboxylate surface active agent as a coagulant aid, and adding water-solubility methyl silicone oil; pumping into a plate-and-frame filter press for filter pressing, carrying out vacuum concentration on filtrate, then heating to 90 DEG C to 98 DEG C, and maintaining for 5.5 hours so as to hydrolyze the filtrate; cooling a hydrolysis product to 40 DEG C, and carrying out vacuum filtration so as to sediment out metatitanic acid; rinsing with sand-filtered water and deionized water, and adding potassium carbonate or phosphorous acid to obtain metatitanic acid filter cakes; and drying the filter cakes, calcining at 500-800 DEG C, and then pulverizing to obtain a titanium dioxide finished product. The method has the advantages of being capable of reducing disposal amount of the waste denitration catalyst, recycling the waste denitration catalyst and reducing the production cost of the waste denitration catalyst.

An intensive circulating water culture system comprises at least one water purification system which is configured in an aquaculture pond and mainly composed of a water pump, a filter and a sterilizing device. The water pump is at least arranged between a return water regulating pond and a sand filter tank, and the sand filter tank is then sequentially connected with a biofilter and a protein skimmer to form the filter; the water purification system is configured with a dissolved oxygen release device, and the device oxygenates the water purification system by connecting with the protein skimmer; and the water purification system is configured with an ozone generator and an automatic temperature regulating unit which are connected with the water purification system respectively by pipelines. The intensive circulating water culture system is characterized by simple structure, small occupied space, low cost, good circulating water treatment effect, meeting requirements for intensive aquaculture and the like.

The invention relates to a complex heavy-metal waste water emergency quick treatment method, comprising the following steps of: filtering by a sand filter; mixing by a high-speed pump; carrying out an ultraviolet catalyzing ozone reaction; carrying a microwave catalyzing active carbon reaction; carrying micro-electrolytic reaction; circulating waste water; carrying out a Fenton reaction; carryingout electric flocculation on an aluminum electrode plate; and pressing and filtering sludge. Waster water in a circulating slot is pumped into an iron carbon fluidized bed by a fluidizing pump to be circularly treated; an air compressor is connected with the iron carbon fluidized bed and prevents a filler in the iron carbon fluidized bed from blocking; and the microwave active carbon reactor is an active carbon filling tower, and a microwave emitter is arranged outside the body of the active carbon filling tower. The complex heavy-metal waste water emergency quick treatment method disclosed by the invention is used for treating the complex heavy-metal waste water, associated devices are simple, easy, quick, can meet an emergency, and can update and convert, no various chemical raw materials are fed, and various complex heavy-metal waste water with unknown elements can be quickly treated as long as the current magnitude is regulated, and thus the heavy metal in the waste water and chemical oxygen demand can immediately reach the standard and are discharged.

The invention discloses an urban road rainfall runoff ecological coprocessing device and a method. The device comprises an urban road rainfall runoff ecological coprocessing box and a bioretention purification unit, wherein an overflow weir board, a second screen mesh partition and a perforation partition are arranged in the urban road rainfall runoff ecological coprocessing box at intervals sequentially; the interior of a box body is divided into an overflow chamber, a water inlet chamber, a water distribution chamber and a bioretention purification chamber that are sequentially arranged by the overflow weir board, the second screen mesh partition and the perforation partition; and the bioretention purification unit is arranged in the bioretention purification chamber, and comprises a gravel layer, a sand filter layer, a planting soil layer and plants. The device and the method can sequentially remove floating matters, particles and soluble pollutants that are in different particle sizes in rainfall runoff, achieve hierarchical control of the pollutants in the rainfall runoff, can store a part of rainfall runoff to meet growth requirements of the plants in the bioretention unit, achieve a water conservation effect, and can also achieve multi-purpose control of water quality and water quantity of the urban road rainfall runoff.

The invention discloses a garbage leachate treatment technique, comprising: homogenizing the water quality of garbage leachate by an adjusting tank, and then leading the garbage leachate to enter a coagulative precipitation tank; then, alkalifying and deaminizing, and lifting into a UASB+AF tank through pump; after that, removing a great deal of organic matter, and leading the effluent to enter apacked A/O tank together with the sewage processed by the original sewage plant; removing the organic matter and the ammonia nitrogen which are difficult to degrade, and then passing through a secondary sedimentation tank and entering an advanced oxidation system for deep oxidation; leading the effluent to enter a biological aerated filter, processing by a sand filtering system and then entering amembrane processing system; and finally, ensuring the water quality of the effluent to be stable and reach the standard. As the garbage leachate treatment technique adopts the technology of 'biochemistry+ physical chemistry+ membrane separation' to treat the leachate, the effluent can reach the first grade discharge standard (GB16889-1997).

The present invention is an apparatus and process for oxidizing mercaptans in a preferably kerosene stream. By using a catalyst promoter, sufficient separation of hydrocarbon and aqueous alkali occurs in the reactor vessel to obviate the need for a settling tank. Hence, the sweetened kerosene can be withdrawn from the reactor vessel and sent directly to a residual alkali removal unit such as a sand filter vessel or to a water wash vessel if jet grade fuel is desired. In an embodiment, the reactor vessel used for this purpose includes a reaction section and a separation section in the same reactor vessel and an aqueous alkali outlet and a sweetened hydrocarbon outlet in the separation section.

The invention relates to a method for treating arsenic-containing wastewater by a process of preoxidation-composite coagulation deposition-filtering, and belongs to the technical field of wastewater treatment. The method comprises the steps of adding a certain amount of an oxidizing agent in a reaction tank for preoxidation in a condition that the wastewater contains trivalent arsenic so as to transform the trivalent arsenic into pentavalent arsenic completely, while for the wastewater only contains the pentavalent arsenic, the preoxidation process is not needed; adding a certain amount of a ferrous salt water solution; controlling a molar ration of Fe to As being 5-50; adding acid or alkali to adjust a pH value being 6-8; stirring for 0.1-1 min rapidly, so that a ferric arsenate precipitate is formed, at the same time, the ferrous salt is hydrolyzed into ferrous carbonyl to promote coagulation deposition of the ferric arsenate; adding a solution of 0.1-10 mg/L organic polymer flocculant; stirring for 0.1-1 min rapidly; stirring for 5-10 min slowly, precipitating for 10-30 min, discharging sludge from the bottom, introducing supernatant into a sand filter tank, a filter film or a filter bag, filtering and discharging the effluent. Arsenic content in water after treatment is lower than that of a drinking water standard (less than 10 [mu]g/L) regulated by the world health organization. The method has low sludge production and low cost, and can be used for advanced treatment of the arsenic-containing industrial wastewater and treatment of arsenic polluted underground water and drinking water.

The invention discloses the petroleum use lamination backlog to fill guards against sand pipes the column, was suitable to the multi- oil layers extrusion packing tube column, in was sufficient string of tubing including ram and in fills the tool, outside filled the tube column including the crown hook wall packer, outside filled the tool and the sand filter, outside filled on the tool to be equipped with fills the mouth. In fills the tube column to be equipped with the seat to seal washes one's hands of, outside fills the tube column to be equipped with the level the packer. After the seat seals washes one's hands of is hit the pressure to cause the crown to hang the packer place to seal, the seat seals washes one's hands of prearranges the hook wall packer separation, in fills the tube column to be able to fill in the tube column in outside to reciprocate sits the sealing course gap, fills the tool coordination backlog with outside to fill the stratum. Enhances guards against the granulated substance effect and the term of validity. The next tube column then completes many oil layers lamination backlog to fill guards against the granulated substance the construction, greatly reduced the production cost and worker's labor intensity.

The invention relates to the field of drinking water treatment, in particular to a reaction device for deep treatment of drinking water and a method for deep treatment of the drinking water by a water factory. In order to realize the goal of transforming the conventional drinking water treatment process into the deep treatment process, the reaction device and the method adopt the scheme that (1) a static mixer and a coagulation reaction pool are not changed; (2) a sedimentation pool is transformed into an ultrafiltration membrane pool; (3) a medium water pool and a lifting pump used for waterlifting are additionally arranged at the back end of the ultrafiltration membrane pool; (4) a main ozone oxidization pool is in additional arrangement; and (5) an original sand filter pool is transformed into a particular active carbon filter pool. The coagulation and the ultrafiltration are combined, particular colloid and macromolecular organic matters in the water are removed, difficult-to-degrade pollutants are damaged through ozone oxidization, in addition, the macromolecular organic matters are converted into middle and small molecular weight organic matters, and organic matters and pollutants such as ammonia nitrogen and the like in the water are further reduced through the absorption of particular active carbon and the biological degradation of microbes grown on the surface.

The invention discloses an acid mine water treatment system and belongs to the field of water treatment. The system consists of a neutralization system, a coagulation sedimentation system, a filtration system, a reverse osmosis system and a sterilization system which are connected in turn, wherein the coagulation sedimentation system comprises a mixing region, a reaction region, a transition region and a settling region; the mixing region is communicated with the reaction region, the transition region and the settling region in turn; the water inlet of the mixing region is communicated with the water outlet of the neutralization system; the water outlet of the settling region is communicated with the water inlet of the filtration system; and the filtration system comprises a manganese sand filter in which a modified manganese sand filter material modified by 1 to 7 mass percent potassium permanganate solution is arranged. Four regions are arranged in the coagulation sedimentation system of the system, so coagulation treatment effect is enhanced; and the modified manganese sand filter material is adopted in the manganese sand filter, so the effect of removing ferro-manganese ions in the mine water is enhanced and the aim of treating and recycling the acid mine water with high turbidity, high ferro-manganese content and high mineralization is fulfilled.

The invention relates to a technological method for controlling the disinfection by-product and pathogenic microorganism risk of drinking water, belonging to the field of drinking water treatment. The drinking water is produced by combining biological pretreatment, pre-ozonation, main ozonation, active carbon filter and conventional coagulation-precipitation-sand filtration-disinfectant fluid treatment technology, and the method is a feed water treatment technological method which is developed for the micro-pollution raw water and controls the disinfection by-product and pathogenic microorganism heath risk in the water purifying process. The micro-polluted raw water sequentially enters a biological pretreatment tank, a pre-ozonation contact tank, a folded-plate flocculating tank, an inclined-tube sedimentation tank, a sand filter, a main ozonation contact tank, an active carbon filter and a disinfection tank, and finally flows into a clean water reservoir. Through the application of the biological pretreatment, two-level ozone oxidation and active carbon technology, the removal effect on the turbidity, organic matters, the disinfection by-product precursor, the virus microorganism, bacteria microorganism and the like is obviously improved, and the water quality and safety are obviously superior to those of the traditional coagulation sedimentation technology.

The invention discloses an indoor industrial penaeus vannamei culture device which comprises a plurality of culture ponds, a water inlet pipe and a culture water circulation system, wherein the culture water circulation system comprises a sedimentation pond, a floatation pond and a biological filter pond; the floatation pond is internally provided with an aerobiotic device, an aeration device and a foam sewage discharge device; the foam sewage discharge device comprises a foam guide pipe and a sewage pipeline; the foam guide pipe has a plurality of foam guide holes; the biological filter pond is connected with both protein separator and sand filtering tank; one end of the sand filtering tank is connected with the biological filter pond, and the other end of the sand filtering tank is connected with one end of an ultraviolet sterilizer; the other end of the ultraviolet sterilizer is connected with the water inlet pipe. The indoor industrial penaeus vannamei culture device disclosed by the invention has the advantages of simple structure, convenience in use and low investment cost, can be used for effectively pushing water inside a penaeus vannamei pond to flow so as to ensure that the water inside the penaeus vannamei pond is in a stable rotational flowing state, can effectively solve the problem that the sewage of the penaeus vannamei pond is effectively discharged in time in a low circulation volume state, is uniform in aeration, improves the utilization ratio of water used for culture, reduces the sewage discharge and reduces the medicine application.

The invention discloses a high-efficiency building sand screening and cleaning device, which includes a feed pipe, a grid, a liquid level gauge, a box body, a water inlet pipe, a flow meter, a nozzle, a rotating shaft, a camera, a timer, an impeller, a sieve plate and an exciter. Vibrator, coarse sand discharge pipe and fine sand discharge pipe, the top of the box is provided with a feed pipe, the inside of the feed pipe is inclined with a grid, the lowest end of the grid is provided with an impurity discharge pipe, and the tank is provided with a liquid Position meter, the box is connected with the water inlet pipe, the outlet of the water inlet pipe is provided with a nozzle, the flow meter is installed on the water inlet pipe, the camera is installed on the inner wall of the top of the box, the box is equipped with a shaft, the impeller is installed on the shaft, and the box is tilted. The sieve plate is provided with an exciter on the lower surface of the sieve plate, and the sieve plate includes a first sieve plate and a second sieve plate. The invention screens sand and gravel, improves work efficiency, saves time and labor, has simple structure, is convenient to use, and is beneficial to popularization.

The invention relates to a process and a system for treating breeding wastewater comprehensively, wherein the process comprises the following steps: firstly, performing grating filtration, mixed homogenization and silt sedimentation pretreatment in a pretreatment tank; secondly, performing heating and anaerobic fermentation in an anaerobic reactor; and thirdly, treating the wastewater in a bionic pond, wherein the material liquid in a water distribution trough of the bionic pond enters a sand filter through the bottom of the water distribution trough and then is raised to a water drop step; and the material liquid flows into a pond body and flows out of the pond body after being treated by an artificial float grass belt and hydrophyte floating bodies in the pond. The process and the system have the advantages of simple process, good commonality, high treatment efficiency, low running cost, low investment cost, and simple system maintenance.

The invention discloses a leather waste water treatment system, which comprises a sludge thickener, a sludge dewaterer as well as a crude grating, a fine grating, a sand basin, an aeration equalizing tank, a coagulation sedimentation basin, an air floatation pool, a hydrolysis-acidification pool, a biological selection pool, an A/O nitrogen removing pool, a secondary sedimentation pool and a sand filtering pool which are connected by pipelines, sludge outlets of the sand basin, the coagulation sedimentation basin, the air floatation pool, the hydrolysis-acidification pool and the A/O nitrogen removing pool are connected by pipelines for connecting a sludge thickener; the invention also discloses a treatment process employing the leather waste water treatment system. The invention has the beneficial effects that ammonia nitrogen in the leather waste water converts into nitrate, thereby promoting utilization of nutrients in water by microorganism, and realizing high efficiency reduction of ammonia nitrogen and COD in leather waste water; the invention has the advantages of high waste water purifying capability, high efficiency and small land occupation area, and the waste water after treatment can reach the reuse water quality standard for reuse, thereby realizing the cyclic utilization of water after treatment and reducing waste of water resource.

The invention relates to a method for completely recycling wastewater containing fluorine and ammonia nitrogen in an electronic industry. By the method, the wastewater passes through a 'three plants-in-one' integrated device formed by serially connecting a wastewater treatment plant treatment process, a tap water plant treatment process and a pure water treatment plant treatment process in turn to obtain recycled water. Devices of the wastewater treatment plant treatment process comprise a regulation tank, a reaction tank and a clarification tank; devices of the tap water plant treatment process comprise a quartz sand filter tank, an ozone contact tank and an activated carbon filter tank; and devices of the pure water treatment plant treatment process comprise ultrafiltration membrane equipment, washable reverse osmosis membrane equipment, reverse osmosis membrane concentration equipment and an evaporation system. By the method, the wastewater can be completely recycled, the water quality of the recycled water has high stability, and achieves and is superior to main indicators of GB5749-2006 'Sanitary Standard for Drinking Water' issued by the nation, and the recycled water can serve as primary pure water used in industrial production.

The invention discloses a device and a method for processing restaurant wastewater. A ferrallitic sheet is used as an anode and a graphite sheet is used as a cathode to carry out pulse direct current electrolysis on the restaurant wastewater so as to cause an electrocoagulation reaction; simultaneously ultrafine ozone bubbles are fed into an electrocoagulation reaction region to strengthen the electrocoagulation reaction, so that ferrous irons Fe2+ generated in the electrolysis process is rapidly converted into ferric irons Fe3+, the volume of flocculate becomes larger and the flocculate precipitates more efficiently to remove most of pollutants in the wastewater; sludge generated in the electrocoagulation process enters an activated sludge reactor and a sludge concentrating and extruding device; and clear water containing a little amount of organic matter enters an aeration-ozone-ultraviolet combined treatment degradation tank and a photocatalyst micro filtration membrane, and finally outflows through a fine porous sand filtering tank. The produced water can reach the primary standard in the industry. The processing method has high impact-load resistance. The outlet water quality is stable. In the engineering, consumables have long service life. Therefore, the processing cost of the restaurant wastewater can be greatly reduced.

The invention relates to a treating method for desalting high-salt-content waste water in an oil and gas field during exploration and transmission of oil and natural gas. The method comprises the following steps of: a, adding a hard water softener and a flocculant to waste water, wherein based on each stere of waste water, the addition amounts of the components are as follows: 0.5-0.9kg of hydroxide, 0.5-0.9kg of carbonate and 1.5-3.0kg of the flocculant; b, filtering the waste water by utilizing an ultra-filtration membrane, and filtering by sequentially utilizing a quartz sand filter and a fine filter; and c, carrying out a reverse osmosis desalination treatment on filtered water. According to the treating method for desalting the high-salt-content waste water in the oil and gas field, disclosed by the invention, through various forms and multi-level treatments, organic matters and soluble salt-type matters in water bodies of the oil and gas filed are effectively removed, and thus the chloride concentration of the high-salt-content waste water of the oil and gas field is less than 250mg/L, and other indexes of the high-salt-content waste water can meet first-level standard requirements of the Sewage Comprehensive Drainage Standard (GB8978-1996).

The invention relates to a method for reclaiming fluorine-containing and ammonia nitrogen-containing waste water in electronic industry. In the method, waste water passes through a three-in-one integral device formed by the sequential series connection of a waste water treatment plant treating process, a water works treating process and a pure water treatment plant treating process to obtain reclaimed water. The device for implementing the waste water treatment plant treating process comprises a conditioning tank, a reaction tank and a clarifying tank; the device for implementing the water works treating process comprises a quartz sand filter tank, an ozone contact tank and an activated carbon filter tank; and the device for implementing the pure water treatment plant treating process comprises an ultrafiltration membrane device and a cleaning-resistant reverse osmosis membrane device, and thick water produced by the cleaning-resistant reverse osmosis membrane device can be reclaimed or not to obtain the reclaimed water according to the reclamation rate requirement and environmental impact assessment requirement of a reclamation customer. The reclaimed water treated by the invention has stable and favorable quality, meets and surpasses the leading indicators of GB5749-2006 Standards for Drinking Water Quality issued by China, and can be used as primary pure water for industrial production.

The invention discloses a processing and recycling method of waste water discharged from a stainless steel pickling process. The method comprises the following steps that: waste water discharged from a stainless steel pickling process is pre-treated and sequentially pumped into a first reaction tank and a first sedimentation tank, lime cream and a coagulant aid are added, and fluorinions in the waste water are removed by sedimentation; the resulting water from the first sedimentation tank is pumped into an oxidation tank, and Fe<2+> in the waste water is oxidized into Fe<3+> through aeration; the resulting water from the oxidation tank is sequentially pumped into a second reaction tank and a second sedimentation tank, lye and a coagulant aid are added, and heavy metal ions such as Cr<3+>, Fe<3+> and Ni<2+> are removed by sedimentation; the resulting water from the second sedimentation tank is sequentially pumped into a pH back regulating tank, a middle water tank and a sand filter for carrying out a profound treatment, and the filtered water can be reused directly; Sludge in the first sedimentation tank and the second sedimentation tank is pumped into a sludge thickener, and is dehydrated by press filtering; sludge supernatant, filtrate and sand filter backwashing water are pumped into a regulating tank for a cycling treatment. According to the present invention, a graded processing measurement upon stainless steel pickling waste water is adopted, and standardized waste water discharging and recycling are realized. With the method provided by the present invention, a secondary pollution is avoided. The method is economical, and has good applicability.

The invention discloses a fine screening and impurity removal device for high-quality fine sand, which includes a base, a material conveying box and a screening box are installed on the upper plane of the base, and the screening box is divided into a sand crushing chamber and a sand filtering chamber. Filtration chamber, a stirring motor is installed in the middle of the top of the crushing chamber, and a stirring shaft is installed on the top of the stirring motor, and several pairs of stirring rods are installed on the stirring shaft. There are crushed sand leaves installed on the outside of the sand crushing chamber. The filter chamber is located below the sand crushing chamber. There is a first partition between the filter chamber and the sand crushing chamber. The middle position of the first partition is provided with a bearing. The end of the stirring shaft is fixed on the bearing, the left and right sides of the first partition are provided with a primary filter, and the bottom of the primary filter is provided with a first deflector; the beneficial effects of the present invention are : Before screening, crushing treatment is carried out to avoid sand sticking, and iron filings treatment is carried out on the fine sand at the discharge end to ensure the quality of fine sand after filtration.

The invention particularly relates to a modular integrated process method suitable for cow breeding wastewater treatment. Aiming at the problem of high-concentration organic wastewater generated in the breeding process of urban and rural distributed cow breeding farms, process integration and parameter design are carried out, and the integrated process is composed of a solid-liquid separation module, a first-level physicochemical module, a second-level biochemical module and a third-level advanced treatment module. The solid-liquid separation module comprises a side flow centrifugal filter and a cyclone separator; the first-level physicochemical module is used for adjusting homogeneous polymerization and flocculation floatation functions; the second-level biochemical module is provided with an anaerobic submodule and an aerobiotic submodule which are arranged in series; the third-level advanced treatment module is mainly provided with an active sand filtering submodule and an ultraviolet disinfection submodule. The process has the advantages of being flexible, efficient, convenient, intelligent and the like, and is capable of ensuring economical, effective and stable operation of wastewater treatment facilities.

The invention provides a fully-artificial breeding method of parent crabs of Portunus trituberculatus, comprising the following steps of: selecting large female and male parents with good characters; artificially controlling the female and male parents to be mated; numbering the mated female crabs and then putting into an overwintering pond, wherein baits of an overwintering period are living clam worms; utilizing sand-filtered underground seawater and controlling the water temperature in a range of 8-10 DEG C to accelerate sexual glands to grow to be mature and ovulate; putting one parent crab with ova into a cage and then putting the cage into a breeding pond to ovulate larvae and breed in the May of the next year; culturing the larvae in one pond to the second phase of young crabs; then putting the young crabs into a cultivation pond to be cultivated, so as to realize the fully-artificial cultivation of the Portunus trituberculatus. According to the invention, the fights and injuries of male crabs are reduced and the parent breeding success rate is improved; the generation and the transmission of diseases are reduced, and the overwintering survival rate is improved; and meanwhile, the fully-artificial breeding method is also applicable to temporary cultivation of commodity crabs so that the marketing period of the commodity crabs is prolonged and the economic additional value of the cultivated crabs is improved; and the larvae are cultivated in one pond so that the fully-artificial breeding method is applicable to propagating of the population of the Portunus trituberculatus breeding population.

The invention relates to a method for refining catalyse cracking gasoline. The invention belongs to the petrochemical art. The invention is characterized in that the catalyse cracking gasoline feeding mixes with active agent first, the mixture goes through the hydrogen sulfide filter tower and sand filter tower provided with solid adsorbent to remove hydrogen sulfide. Then mix the gasoline with catalyst promoter and air. The mixture then goes through mercaptan sulfur filter tower and sand filter tower to remove the mercaptan sulfur, and the residual air is removed by gas-liquid separation tank. The goal is achieved of removing hydrogen sulfide and mercaptan sulfur of catalyse cracking gasoline.

The invention provides an O3-BAC water treatment process and a matched drinking water treatment device thereof. The water treatment process comprises the following steps: 1) introducing original water into a pre-ozone contact column to contact with the ozone; 2) discharging water from the pre-ozone contact column to be mixed with coagulant, and placing the coagulant and the discharged water into a coagulating sedimentation device to perform coagulating sedimentation; 3) filtering the water from the coagulating sedimentation device by a quartz sand filter and a fine filter; 4) introducing the water discharged from the fine filter into a post-ozone contact column to contact with the ozone; and 5) filtering the water from the post-ozone contact column by an activated carbon filter and an ultrafiltration membrane system. Through the accurate control of technical parameters, the discharged water can meet the water quality standard of drinking purified water (CJ94-1999). The treatment process and the device can effectively remove impurity, color, smell, odor, ammonia, nitrite, organism and organic halide and so on, and allow the water to achieve the high-quality healthy drinking water standards. The process is not limited by a seasonal factor.

The invention relates to a treatment process for plumbic acid waste water generated in the production process of lead storage batteries. The treatment process comprises the steps that large-size suspended matter engine oil in the waste water is removed, the waste water enters a water collection pool later, the water quality and water amount are adjusted, alkali liquor is added for adjusting pH of the waste water, the waste water and lead hydroxide sediments enter a flocculation reaction tank, a flocculating agent is added, heavy metal is caught, a colloid is formed, sludge and the water are separated and clarified through an inclined tube precipitator and by means of gravity settling, upper liquor and the sludge are separated, the upper liquor automatically flows to a quartz sand filter through an overflow weir, suspended matter and total lead are removed, then the upper liquor flows to an activated carbon filtering layer, the suspended matter and the total lead are further removed, filtered outlet water enters a pH return tank, diluted hydrochloric acid with the concentration of 10 percent is added to adjust pH to be neutral, and then the filtered outlet water enters a clean water basin and is cycled and reused. According to the treatment process, harmful chemical reagents are not used, the sludge quantity is small, secondary pollution is avoided, the discharged water can be reused, metal in the bacterial sludge can be recovered, the bacterial sludge can be used as fertilizer, and therefore resources and the cost are saved.

A treatment method for biodiesel waste water is carried out by the following steps: arranging self-clearing gratings at water pipe network end points under production equipment, and pumping waste water flowing across the gratings into a multi-stage oil separator; pumping the waste water in the water layer of the oil separator into an electrolytic tank; pumping the waste water from which oil is separated and removed through electrolysis into a micro-electrolysis reaction tank to carry out micro-electrolysis treatment; pumping the micro-electrolyzed waste water into a Fenton system to carry out reaction; feeding the waste water treated by multiple steps into a biochemical system; removing SS from discharged water by efficient shallow gas flotation micro-flocculation; sequentially filtering the waste water purified by micro-flocculation by a sand filter, active carbon and an ultra-filtration system; pumping various sludge produced in the waste water treatment process into a sludge concentration tank. The method has the advantages that oil is fully separated from the waste water, and no impurities are left; massive COD and PH are removed, the water feeding pressure of the biochemical system is reduced, waste water toxicity is reduced, biodegradability is improved, waste water color and smell are removed, and the quality of finally discharged clear water reaches domestic first-grade emission standards.

The invention discloses a livestock breeding waste water treatment method. The method comprises the steps that a waste water treatment system comprising a methane tank, a solid-liquid separator, a regulating tank, a sand filter tank, a granule bacterium algae reaction tank and a sedimentation tank is built; in the granule bacterium algae reaction tank, under the condition suitable for culture, an IC internal circulation vortex flow is formed in the bacteria and algae reaction tank by changing the hydraulic condition, the action of the vortex flow enable microalgae and activated sludge to be mutually wrapped together, and bacteria and algae granule micelle which takes sludge as the core and is wrapped by the microalgae is formed finally. The granule bacterium algae system can greatly increase the biomass of the algae reaction tank, and the livestock breeding waste water treatment efficiency is improved; meanwhile, good settling performance is achieved, the advantages of rapid algae-water separation and the like can be achieved through an ordinary gravity sedimentation tank, and a good treatment effect on treating livestock breeding waste water which is high in nitrogen and phosphorus content is achieved.