33results about How to "Reduce backwash water consumption" patented technology

The invention relates to a modified filter material for sewage treatment in petroleum industry. The technical solution is that the modified formula is made of the following components by weight: 0.5 parts of polyvinyl alcohol PVA, 6.2 parts of polyethylene glycol PEG, 0.12 parts of polydiallyl dimethyl ammonium chloride PDDA; Sodium styrene sulfonate PSS: 5.3 parts. The beneficial effects are: 1. The coating has the property of self-cleaning and anti-oil adhesion; 2. The modified filter material has surface activity, is hydrophilic and oleophobic, and the effect of degreasing sewage is significantly improved; 3. After the surface activity of the filter material is reduced It can be re-modified to prolong the service life; 4. The filter material has a wider application range and wider application field, and the modified filter materials of different materials can be mixed to improve the overall effect; 5. The backwashing water consumption is small, the pressure is low, and it can be broken 6. Greatly shorten the oilfield sewage treatment process, simplify the sewage treatment process, save costs and reduce energy consumption; 7. Pressure resistance, wear resistance, and low maintenance costs in the later period.

The invention discloses an integrated water treatment purifier which comprises a shell (1) with an inner chamber, wherein the upper part of the shell is connected with a water outlet pipe (2), the lower part of the shell is connected with a mud outlet pipe (4), and the inner chamber of the shell (1) is provided with a flocculation reaction device (5); the flocculation reaction device (5) comprises a water inlet pipe section (5a) and a reactor body (5b), wherein the inner chamber of the reactor body is provided with flocculated packing (5c), the lower part of the reactor body is provided with an upper tapered flow guide component (6), an inclined plate assembly (7) is formed on the outside of the periphery of the reactor body (5b), a lower chamber (1a) is formed in the inner chamber of the shell by the inclined plate assembly, the bottom of the lower chamber (1a) is a concentrated mud collection zone, a filter layer (8) is arranged above the inclined plate assembly (7), a middle chamber (1b) and an upper chamber (1c) are formed in the inner chamber of the shell by the filter layer (8), and the upper chamber (1c) is communicated with the water outlet pipe (2). The integrated water treatment purifier integrates flocculation, sedimentation, filtering and concentrated mud collection, and has the advantages of no mutual interference of functional zones, simple and compact structure and small floor area, which is favorable for enhancing the water quality of output water.

The invention provides an ozone-bacteria filter system for advanced treatment of hardly-degradable organic wastewater, relating to a device for advanced treatment of the wastewater. The ozone-bacteria filter system comprises an ozone contact reactor (2), an ozone generator (20), a bacteria filter (7), a blast blower (19) and a backwash water pump (15), wherein the ozone contact reactor (2) which is provided with a water distribution layer (3), a packing layer (4) and a water storage layer (5) is connected with an ozone tail gas breaking device (22); the bacteria filter (7) comprises an upper water distribution device (8), an active carbon layer (9), an iron and manganese removal filter material layer (10), and a lower water distribution device (12) and a gas distribution device (13) whichare arranged in a bearing layer (11); and the bacteria filter (7) is sequentially connected with a backwash valve (14), a backwash water pump (15), a clean water valve (17) thereof and a clean water tank (16), and is connected with the blast blower (19) by a gas inlet valve (18). The ozone-bacteria filter system has the advantages that the ozone absorption efficiency is more than 90 percent, and residual ozone can be prevented from causing secondary pollution. The ozone-bacteria filter system can be widely used for the deep and recycling treatment of various hardly-degradable organic wastewater.

The invention relates to the field of chemical water production in power plants, and discloses a method for regenerating a desalting mixed bed. In the method, the liquid level in a mixed bed tank reduces to the top of a resin layer before the resin layer is subjected to hydrodynamic backwashing layering, and compressed air is introduced into the mixed bed tank to perform air washing, so the resinis effectively loosened, the water injection pressure of the subsequent backwashing step is reduced, the backwashing layering effect is enhanced, the backwashing layering time is significantly shortened, and the consumption of backwashing water in the resin backwashing layering process is reduced. After the resin is backwashed with water, the control of the concentrations and the flow amounts of aregeneration alkali solution and a regeneration alkali solution can significantly reduce the consumptions of the regeneration alkali solution and the regeneration alkali solution in the resin regenerating process and greatly shortens the regeneration time of the desalting mixed bed. The water production volume of the desalting mixed bed in a single period is high, and the outlet water of the regenerated desalting mixed bed has excellent quality.

The invention relates to an efficient backwashing filtering device and a multilayered filter provided with the device. The efficient backwashing filtering device is provided with a filtering unit, so that high-turbidity circulating water can be filtered and backwashing can be carried out on a fiber filtering material, and therefore, regeneration of the fiber filtering material is realized and the filtering effect is enhanced; in a backwashing process of the fiber filtering material, high-pressure air in a high-pressure airflow pipeline is sprayed out from a nozzle on an outer sleeve, and suspension matters and oil, which are intercepted by the fiber filtering material, can be completely removed, so that the fiber filtering material is completely regenerated; the backwashing time can be greatly shortened and the water use amount of backwashing is saved; the backwashing and pollutant removing effects are relatively good; and the multilayered filter provided with the device comprises a plurality of stacked filtering units, so that the occupied areas of a filter is reduced, the utilization rate of a land is increased and the filtering efficiency is improved.

The invention relates to the field of water treatment, in particular to a multi-medium filter backwashing technology. The multi-medium filter backwashing technology is characterized by adopting the following steps of: carrying out minor gas washing for 10-20 seconds until a filter material can just not flow out of a water outlet, falling on a bed, and carrying out gas washing for 240 seconds; carrying out minor backwashing for 50-60 seconds until water is filled in the filter and can just not flow out of the filter, pausing for 180 seconds, and carrying out backwashing for 600 seconds; and pausing for 300 seconds, and carrying out forward washing for 900 seconds. The multi-medium filter backwashing technology has the advantages of shortening bed falling time and backwashing technology time and increasing the efficiency by 50% or so; gas at the bottom of the filter and in the center of the filter material is discharged through minor backwashing so as to prevent filter material loss; a series of problems of backwashing strength control difficulty, filter material mixing, great filter material loss amount and the like are solved, and the quality of produced water is ensured; the amount of backwashing water is reduced, energy sources are saved, and the cost is reduced; and the full automatic control operation of the technology process is realized.

The invention discloses an aerating biological filter pool in the water disposal device domain, which comprises the following parts: filter pool within aerating device and filtering device, water inlet pipe on the bottom of filter pool, backwash drainage pipe on the bottom of filter pool, pulse air-chamber to interconnect bottom of filter pool through backwash inlet pipe and vent pipe, wherein the vent pipe lies in one end of water sealing pipe in the pulse air-chamber; the other end of vent pipe connects gas-water separator, whose top possesses connection pipe with bottom interconnecting the bottom of pulse air-chamber through connection pipe.

The invention relates to a high-efficiency energy-saving granular filter which comprises a filter body, a backwashing assembly, a backwashing water tank, an air compressor and a control system. A tank body and upper and lower oval sealing heads are arranged on the filter body; upper and lower sieve tubes / plates are arranged in the tank body; an oil / gas discharge port and a sewage inlet assembly are arranged at the top of the upper oval sealing head; a water outlet, a discharge port and supporting legs are arranged at the end of the lower oval sealing head; a backwashing water inlet and a backwashing gas inlet are arranged on the backwashing assembly; after being connected with a water inlet pipe, a backwashing water inlet pipe is connected with a backwashing spray nozzle; the backwashing water tank is connected with a filter by a return pipe; after being connected with a gas control valve, a gas check valve and the like, the air compressor is connected with the backwashing gas inlet by pipelines; by the control system, each valve, a backwashing water source and a backwashing gas source are automatically controlled to carry out operation according to the program. The filter disclosed by the invention has a simple structure, adopts a three-phase flow backwashing technology, is convenient to operate, is low in backwashing water consumption, is effective and energy-saving to backwash and has long equipment service life.

The invention particularly discloses an O-shaped filter chamber, wherein a water inlet is arranged above the filter chamber; a sewage outfall is arranged at the center of the filter chamber and communicated to two ends of the bottom of the filter chamber; one end is communicated with a water outlet; the other end is communicated with a drain outlet; a filter material intercept board is arranged at the top of the filter chamber; a filter material layer is arranged below the filter material intercept board; a filter plate is arranged below the filter material layer; a water distributing filter head and a backlash air pipe are arranged on the filter plate; and an air inlet is arranged at the lower wall of the filter chamber and arranged above the water outlet. By adopting the O-shaped filter chamber, a fiber filter chamber is formed into an O shape of a capital letter; and two ends are formed into arcs, so that the running resistance of the filter material is effectively reduced. The sewage outfall, an outlet channel and a backlash intake channel are merged together, formed into a mode of a guide wall, and put in the middle of the filter chamber, so that not only is the floor area of the filter chamber effectively reduced, but also a 'track' can be provided for movement of the filter material, so as to play a guide role.

The invention discloses a novel suspension filter and a filtering system comprising the same. By arranging a movable partition and a filter screen, a housing is divided in order into an upper clear water region, a middle filtering region and a lower dirt-collecting region. Under the action of the inlet water pressure at the lower end of the housing and the action of buoyancy of suspending filtering media, the movable partition suspends at the top end of the housing, and the filtration effect is achieved by the multi-layer suspending filtering media. The filtered water enters the upper clear water region through the filter screen which is arranged in the center of the movable partition. During back-flushing, the pressure of the upper clear water region is higher than that of the middle filtering region, and the movable partition gradually moves down, so that the upper clear water region is enlarged and the middle filtering region is compressed to the minimum extent, the clear water enters the middle filtering region through a water distributor, undergoes vortex agitation and flushes the suspending filtering media, thus achieving the back-flushing effect. The system of a conventional settlement-type filter is simplified, a back-flushing water pump or air pump required for a back-flushing system is omitted, and the consumption of back-flushing water is greatly reduced. The novel suspension filter is simple, practical and free of extra energy consumption.

The device contains at least two single filter tanks connected each other, water entrance pipe connected with first single filter tank and water exit pipe connected with last single filter tank, devision plates are used to separate the single filter tanks up and down crisscrossed, sewage up and down baffling passageway is preset. Bottom of single filter tank are mud collector, mud sludging pipe and filling layer is the middle part, the fillings are anaerobic filling, aerobic filling and high-grad iron filling, at least two of them are combined to put into the filter tanks, each fillings combination is put to one filter tank to form different function area. The design of sewage up and down baffling passageway is to ensure obtaining length of flow path required by process, the combination of mutiple fillings is suited for requirements of different water quality.

The present invention relates to a filter characterizing mutually arranged filter elements, and is especially tilting plate type filtering pool for use in water works. The tilting plate type filtering pool consists of filtering pool, reverse flush system, filtering system, sewage draining system and water influent and effluent system. The reverse flush system includes reverse flush valve, flushing air valve, water and air distributing transverse pipes, water distributing longitudinal pipes and air distributing longitudinal pipes; the filtering system includes anthracite layer, quartzite layer, coarse sand layer and pebble layer; the water influent and effluent system includes overflow weir plate, water effluent valve and water canal; and the sewage draining system includes tilting plate valve and canal. The present invention has less reverse flush water amount, short reverse flush time, high water effluent quality, low cost and other advantages.

The invention discloses a device for treating phosphorus-containing organic wastewater by using an A / O soil percolation system. A centrifuge guides layered discharged water into the A / O soil percolation system; the A / O soil percolation system comprises an anaerobic soil percolation area and an aerobic soil percolation area, respectively; and water discharged from the centrifuge is guided into the bottom in the anaerobic soil percolation area by a water inlet pipe; water discharged from the A / O soil percolation systems is sprayed into a surface turbulent flow screening and filtering device, so that viruses and heavy metals in the water are removed, and organic matters are mineralized or decomposed; then the water enters a rotary sand removal device to carry out sand removal, and finally clean water reaching the standard is discharged. According to the invention, an A / O process is used in a soil percolation system, and the soil percolation system is improved by using the A / O process and an alternate vertical flow concept, so that the cost and expense of deep treatment of sewage are reduced, the production of secondary pollution in the treatment process is avoided, and the effluent water quality of sewage is enhanced.