Fine water filter

FIELD: chemistry.

SUBSTANCE: fine water filter comprises the housing with a cover and a bottom, the central vertical tube with the upper drainage and distribution system, the two-layered granular loading, the middle drainage and distribution system, the reservoir for supplying compressed air, the fitting for hydraulic discharge, the technological hatches, the plunger, and the pipe for removing filtered water. Wherein the filter is equipped with the additional drainage and distribution system, which is located under the middle drainage and distribution system and on which the single-layered granular loading is placed, the pipe for supplying water for flushing and the pipe for removing water after flushing the single-layered granular loading, wherein the pipe for supplying the water for flushing the two-layered granular loading is arranged lower than the middle drainage and distribution system.

EFFECT: increasing the water purification efficiency.

2 cl, 1 dwg

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: claimed is method and deammonifying installation for purification of ammonium-containing sewage waters. Deammonifying installation for purification of ammonium-containing sewage waters contains aeration tank and hydrocyclone for separation of sludge from aeration tank into relatively heavy fraction, which includes bacteria, performing anaerobic ammonium oxidation, and relatively light fraction. Hydrocyclone contain input, connected with aeration tank, for return of separated relatively heavy fraction into aeration tank and upper output, connected with aeration tank, for discharge of separated relatively light fraction from hydrocyclone. Hydrocyclone contains cylindrical segment and conic segment. Surface of internal walls of conic segment is rough on certain parts. Rough surface of internal walls of conic segment has higher degree of roughness than surface of internal walls of cylindrical segment. Method of purification of ammonium-containing sewage waters is realised in deammonifying installation.

EFFECT: simplification of ammonium and nitrite conversion into elementary nitrogen.

33 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to ecology and environmental protection. For cleaning filtering system is erected and used on soil slope surfaces. Filtering system is composed of the slope soil top layer processed with aqueous solution of polyelectrolyte complex. The latter comprises the mix of hydrolysed polyarcylonitrile and polyethylene polyamine at the ratio of 1:3.5-1:4.5, wt %. Processed soil sorption capacity saturated, said soil is removed and disposed or recovered.

EFFECT: simplified cleaning, higher erosion resistance of run-off surfaces.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry. Mixed coagulant from mineral raw material is obtained by dissolution of boehmite-kaolinite bauxide in autoclave with hydrochloric acid with concentration 220 g/l with ratio S:L=1:6 for 1-3 hours in interval of temperatures 150-180°C.

EFFECT: invention makes it possible to increase coagulation ability of mixed coagulant - hydrooxichloride of aluminium and iron with concentration by Al2O3 2,32-6,87 and by Fe2O3 0,94-1,02 wt %, in water purification: by turbidity and colour.

2 dwg, 6 tbl

Vacuum deaerator // 2558109

FIELD: power industry.

SUBSTANCE: vacuum deaerator contains a branch pipe for supply of chemically purified deaerated water to the distributing header, the first jet plate fitted with a finned overflow edge and a punched steam discharge sheet, the second jet plate having a finned overflow edge and a punched steam discharge sheet. Fins of overflow edges of the first and second jet plates are made rectangular at an angle 30-60° to vertical line with inclination towards drain from overflow edges of flows of the deaerated water, the cross-flow plate with cross-flow and overflow edges, three punched pipelines for supply of heating water to the cross-flow plate, the bubbling sheet with overflow edge, the punched pipeline for supply of heating water under the bubbling sheet, at least, two pipelines for discharge of non-evaporated heating water to the inlet of the bubbling sheet, the partition blocking discharge of non-evaporated heating water into the flow of deaerated water drained from the bubbling sheet, passing through the bubbling sheet at least two L-shaped boxes of heating vapour cross-flow, installed evenly along the deaerator housing in the space between the overflow edge of the bubbling sheet and the punched pipeline for supply of heating water under the bubbling sheet, at least one branch pipe for discharge of vented steam and one branch pipe for discharge of deaerated water.

EFFECT: increase of overall performance of the vacuum deaerator.

3 dwg

FIELD: testing equipment.

SUBSTANCE: invention relates to technology of pressure test of electro-hydraulic-mechanical systems and can be used for degassing the working fluid in technical devices using in their constructive solutions the flowing hydraulic tanks of open type. The method comprises degassing the working fluid on the grid in the flowing hydraulic tanks, imparting the grid of low-frequency transverse vibration, and at the inlet of the grid by bubbling the gas liquid layer is created with a high-frequency pulsating low-intensity pressure. The flowing hydraulic tank of open type (1) comprises a lid (2), partitions (3, 4), a grid (5), the pipes of discharge (6) and intake (15) of the working fluid, a drain (7), intermediate (18), intake (14) cavities and involves the installation of a grid (5) on the elastic supports (8). Below the grid (5) on the side of the flow outlet into the cavity (18) a pneumatic dynamic vibrator (9) is mounted with the modulated phase of gas oscillation, the outlet nozzle (10) of which is mounted on the grid (5).

EFFECT: invention provides increased efficiency of degassing fluid, the degassing process intensification, which enables to improve and expand the indices of quality of electro-hydraulic-mechanical systems and their components.

2 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a polymer obtained via condensation polymerisation. The polymer is obtained from at least two monomers: acrylic monomer and alkylamine. Said polymer is modified such that it contains a dithiocarbamate salt group capable of cleaning one or more compositions containing one or more metals. The polymer has molecular weight of 500-200000.

EFFECT: obtaining polymers for various media as means of purification from metals, including waste water systems.

13 cl, 5 ex, 1 dwg

FIELD: chemistry.

SUBSTANCE: inventions relate to production of desalinated water and can be used for obtaining drinking water from sea and salt waters. Extraction of water from saline solution is carried out with application of selective solvent, containing carboxylic acid, which has carbon chain from 6 to 13 carbon atoms long. In order to realise the method saline solution emulsion in selective solvent is prepared, selective solvent is heated before and after contact with saline solution to obtain first phase, which includes selective solvent and water from saline solution, dissolved in selective solvent, and second phase, including highly-concentrated remaining part of saline solution. After that, first phase is separated from second phase, first phase, including selective solvent and dissolved water, is extracted from highly-concentrated remaining part of saline solution or highly-concentrated remaining part is extracted from saline solution from first phase. First phase is cooled after extraction to precipitate water from selective solvent and precipitated water is removed from selective solvent.

EFFECT: invention provides obtaining almost pure fresh water.

19 cl, 15 dwg, 2 ex

FIELD: process engineering.

SUBSTANCE: invention can be used for desalting of sea, hard and/or contaminated water by direct osmosis desalting. To this end, contaminated feed solution with water at first osmosis pressure is forced through semi-permeable diaphragm to discharge side that has the flow of carrier solution with second osmosis pressure on discharge side of semi-permeable diaphragm. Diluted discharge solution is heated to agglomerate discharged diluted substance to two-phase flow containing liquid phase of agglomerated dissolved substance and liquid water phase. Then, agglomerated dissolved substance is separated to get enriched flow to be cooled to obtain cooled single-phase water-rich flow to be subjected to removal of residual dissolved substance to produce purified water.

EFFECT: higher quality and desalting and purification.

23 cl, 4 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: method of purification of phenol-containing sewage waters of alkali-hydrolysis processing of rice husk includes preliminary desiliconisation of phenol-containing sewage waters by their processing with hydrochloric acid with precipitation of solid and separation from solution of silicon-containing product and electrochemical oxidation in presence of chloride ions in electrolytic cell with application of direct current. Process of electrochemical oxidation is carried out with concentration of chloride ions 0.10-0.11 mol/l in non-diaphragm electrolytic cell with application of ruthenium-titanium oxide anode and titanium cathode for 70-90 min with current density 100-150 mA/cm2 with constant mixing. Required concentration of chloride ions is provided by dilution with water of phenol-containing sewage waters after their desiliconisation.

EFFECT: invention makes it possible to increase degree of purification of polydisperse concentrated phenol-containing sewage waters of alkali-hydrolysis processing of rice husk from phenol and other organic pollutants.

3 cl, 1 tbl, 2 ex

FIELD: agriculture.

SUBSTANCE: device comprises a flotation device, a frame, a hydraulic drive. On the frame the longitudinal rods are pivotally mounted, and on their cantilever portion the linkage for attachment of the drum is mounted with the ability of movement in a vertical plane. The drum is mounted with the ability of replacement of the drum holder, at that the drum is rotated by the hydraulic motor through the belt drive in the direction opposite of the flotation device movement.

EFFECT: improvement of quality of the implementation of the technological process of cleaning the water reservoirs from blue-green algae and reduction of energy intensity.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention covers high-rate filter with porous filtering medium for light blowback. Forced water to be filtered is directed to top part of high-rate filtering device and filtered with the help of downstream. Porous medium is subjected to blowback for provision of optimum filtration efficiency by forced water and processed water flow suppression after detection of definite water level or variation of processed water flow rate, blowback water feed and/or air by means of upflow through blowback equipment. Impurities are separated in porous medium in collision and friction between said medium at floating of porous medium along with blowback water flow, placing said porous medium at constant point and discharge of impurities via discharge pipe of high-rate filtering device till deposition of impurities.

EFFECT: blowback of high-rate filtering device incorporating porous medium.

14 cl, 9 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to treatment of household and industrial effluents. After bed is fouled, filtration is terminated to feed flushing water into bed layer. Note here that after filtration termination, remained water with dirt is first displaced via holes for air of drainage-distribution system composed of perforated tube with porous cartridge. Water level above the bed should equal 0.5-1.0 m. Aeration lasts for 3-5 minutes. After water feed termination, the bed is flushed with water via the holes of aforesaid system. Efficiency of said system is defined by mathematical formula.

EFFECT: higher efficiency of filtration.

2 ex

FIELD: process engineering.

SUBSTANCE: invention relates to water treatment and is intended for mechanical filters to be used at industrial water supply, effluents tertiary treatment stations and drinking water treatment plants. Proposed water cleaner comprises case 1 to accommodate: fine-grain filter bed 2, bearing bed 2 of gravel and flushing device arranged inside of under bed 3 and composed of a set of porous tubes 4 covering the area under bed 2. Solid semitube 5 is arranged inside every porous tube of said set 4 to face with its convex surface directed upward and its end joint with manifold 6 to force water and air therein. Besides, multipath ledges 7 may be made over the length of two lengthwise surfaces of semitube wall.

EFFECT: new design, high reliability.

2 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to treatment of household and industrial effluents. Water filtration module comprises bed, drain-distribution system composed of perforated tube provided with porous cartridge made from fibrous material to cover perforated tube surface, and connection elements. Said perforated tube has different-diameter air and water feed holes. Water feed hole diameter makes two air feed hole diameters. Spacing between air feed holes makes two spacings between water feed holes. Design area of perforated tube holes is governed by the following relationship: SO=[(n1×0.785×d12 )+(n2×0.785×d22 )]×kpor, where n1, n2 is the quantity of air and water system holes; d1, d2 are diameters of air and water system holes; kpor. is porosity factor.

EFFECT: higher efficiency of filtration.

2 dwg

Sand filter // 2440170

FIELD: process engineering.

SUBSTANCE: invention relates to sand filter for water treatment. Said filter comprises cylindrical container housing the plate to divide it into top and bottom zones. Top zone contains filtration medium comprising single layer of sand with height H defined by formula H=a·eb-v, where a varies from 500 to 800, b varies from 0.020 to 0.045 and filtration rate v makes 40-70 m/h. Back flushing of sand filter consists in draining filtered water contained in container top section to the level of filtration medium top surface. Air back flow is forced therein to break the crown and create air bubbles in filtration medium. Said back air-water flow is forced therein to remove dirt released in water change in sand volume and force water backflow to precipitate filtration medium. Now final flushing is performed in parallel flow to prepare said medium for filtration and eliminate dirt not removed in back flushing.

EFFECT: higher efficiency of filtration, longer life.

12 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to water treatment appliances. Proposed method consists in that filtration layer is cleaned in separate process of partial cleaning to clean opt iron removal layer and in complete cleaning process wherein both top and bottom iron and manganese removal layers are removed. Note here that complete cleaning is not carried out as frequently as incomplete cleaning. Proposed water treatment device comprises uncleaned water feed tube, one or multiple uncleaned water flow mixing nozzles, filtration reservoir, filtered water discharge tube, flushing water counterflow feed tube, multiple nozzles for filtration layer cleaning, and overflow outlet arranged in filtration reservoir above filtration layer. Note here that filtration reservoir is, if fact, round as seen from top, while filtration layer cleaning nozzles are arranged spaced apart at preset interval, above filtration layer.

EFFECT: higher rate and efficiency of cleaning.

12 cl, 12 dwg

FIELD: process engineering.

SUBSTANCE: invention can be used in water supply systems for water purification to required standards. Proposed filter comprises transparent housing 1, chambers for initial and purified fluid 5 and 4, respectively, granular medium with indicator particles 2 and laminar grated drainage-distribution system 3 arranged there below, tubes to feed initial 6 and rinsing 10 fluids, filtrate discharge tubes 11 and waste fluid discharge tubes with valves an accessories. Ejector 16 with diffuser 17 and structuring tube 14, fast-operation valve, and vacuum-tank 20 arranged on suction pipe are connected to pure water chamber 4 via gate valve 15. Fast-operation valve inlet is connected to rinsing water tube and valve outlet is connected to ejector. Coarser grains of filter medium acts as indicator particles.

EFFECT: higher reliability, water quality and filter efficiency, simplified medium composition.

1 dwg

FIELD: technological processes.

SUBSTANCE: invention relates to technology of pressure filter filtering bed regeneration and may be used in systems of industrial and drinking water supply. Method includes at the first stage bubbling of bed by supply of compressed air into bed with specific flow rate from 0.6 to 1.2 m3/(min·m2) under normal conditions for 6÷10 min, and at the second stage bed is washed by means of water supply into bed with specific flow rate from 0.6 to 1.2 m3/(min·m2) for 6÷10 min. At the second stage washing is carried out periodically with bed expansion by 10÷15% by means of water supply into bed with specific flow rate from 1.8 to 2.1 m3/(min·m2) for 3÷4 min.

EFFECT: improved performance and efficiency of pressure filter washing.

3 cl

FIELD: chemistry.

SUBSTANCE: method involves, for example: (a) evaporation of said oxidised discharge stream, containing terephthalic acid, metallic catalyst, impurities, water and solvent, in the first zone of an evaporator to obtain a vapour stream and a concentrated suspension of the discharge stream; and (b) evaporation of the said concentrated suspension of the discharge stream in the second zone of the evaporator to obtain a stream rich in solvent and a high-concentration suspension of the discharge stream, where the said second zone of the evaporator has an evaporator operating at temperature ranging from 20°C to 70°C, where from 75 to 99 wt % of the said solvent and water is removed by evaporation from the said oxidised discharge stream at step (a) and (b); (c) the said high-concentration suspension of the discharge stream is filtered in a zone for separating solid products and liquid to form a filtered product and a mother liquid; (d) washing the said filtered product using washing substances fed into the said zone for separating solid products and liquid to form a washed filtered product and washing filtrate; and dehydration of the said filtered product in the said zone for separating solid products and liquid to form a dehydrated filtered product; where the said zone for separating solid products and liquid has at least one pressure filtration device, where the said pressure filtration device works at pressure ranging from 1 atmosphere to 50 atmospheres; (e) mixing water and optionally extractive solvent with the said mother liquid and with all of the said washing filtrate or its portion in the mixing zone to form an aqueous mixture; (f) bringing the extractive solvent into contact with the said aqueous mixture in the extraction zone to form a stream of extract and a purified stream, where the said metallic catalyst is extracted from the said purified stream.

EFFECT: improved method of extracting metallic catalyst from an oxidised discharge stream obtained during production of terephthalic acid.

36 cl, 3 dwg, 2 tbl, 2 ex

FIELD: purification equipment.

SUBSTANCE: invention relates to purification of natural and waste waters and can be used for removal of suspended substances from water. The proposed filter comprises a casing with filtration element and side pocket communicated via an opening, chutes, vibrators and system of inlet and outlet pipes with gates. The proposed invention differs from known designs in that the vertical pipe communicates, via the gate from below, with the initial water pipe and, from above, with tubular manifold. The tubular water distributors are attached to the lower part of the said manifold, the distributors being furnished with bottom holes arranged above perforated pan accommodating the filtration element. Note that aforesaid filtration element is fitted on guides to move thereon, the said guides being attached to the casing walls by rods. Note also that the filtration element located at the casing bottom accommodates the vibrators arranged vertically, all along the element height and length.

EFFECT: water purification efficiency increased by 10 to 15%, reduced interval between rinsing filter to one time a day; rinsing time is also reduced due to arrangement of vibrators inside casing and partial initial water oxygen saturation is allowed for.

2 dwg

FIELD: treatment of water.

SUBSTANCE: method comprises filtering tap or natural water from top to bottom through tree layers of stones of natural black silicon of 0.5 cm3 to 3 cm3 grains and supplying and discharging water within 5-15 liters per 6 seconds. The device comprises three same rectangular vessels mounted one above the other and made of biologically inert material, e.g. plastic or stainless steel of 60x30x30 cm (2:1:1) in sizes. The ratio of the vessel volume filled with silicon stones to the volume of the vessel for water is 1:1.5. At the centers of the bottoms of each vessel, within the area of 20x20 cm, are openings of 4 mm in diameter to provide 1 opening per 1 cm2. The bottom of each vessel is provided with the funnel. Each of the vessels is provided with the detachable lid which consists of two members and is provided with opening of diameter 2.5 cm at the center. One internal side of each vessel is provided with two projections. One projection is at a distance of 20 cm from the bottom and is used for indicating the level of filling with silicon stones. The second projection is made at a distance of 5 cm from the bottom and is used for indicating the level of water. The bottom of each vessel is provided with funnel with cover. The funnel is made of an inert material.

EFFECT: improved quality of silicic water.

5 cl, 2 dwg

Up!