Classifications

• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
  • C02F2103/44—Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2201/00—Apparatus for treatment of water, waste water or sewage
  • C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2303/00—Specific treatment goals
  • C02F2303/16—Regeneration of sorbents, filters
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2303/00—Specific treatment goals
  • C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens

Definitions

• the invention relates to an improved site device for recycling a wash water.
• the invention is more particularly, but not exclusively, intended for the recycling of washes water on a site using cement products.
• These wash waters are generated during the cleaning of tools and devices for casting or preparing concrete or mortar, such as concrete skips, routers or concrete mixers.
• the documents FR 2 669 930 and FR 2 669 997 describe a transportable site device for decanting a wash water, contaminated with cementitious products, and to adjust the pH of this water, for the purpose of its reuse for washing. or to adapt to its evacuation in eco-compatible conditions.
• the invention aims to solve the disadvantages of the prior art and concerns for this purpose a device for recycling a water comprising debris and particles, in particular cementitious, comprising a first set of tanks, said assembly comprising: at. a spill compartment adapted to contain a large flexible bulk container, which spill compartment is in hydraulic overflow communication with:
• a filtration compartment - decantation which compartment is in hydraulic communication via a filter means with: c. a suction compartment, which compartment in hydraulic communication with a discharge pipe via a first hydraulic pump.
• FIBC large flexible bulk container
• big bag a large flexible bulk container
• Filtration fines not retained, during the spill and the first settling, is performed by the filtering means between the filtration compartment - decantation and the suction compartment, which allows to have a large volume potential during the spill and thus avoid possible overflows in the event of clogging of the filter found in the devices according to the prior art, while ensuring a filtration compatible with the operation of the pump and maintaining a compact and transportable device.
• the device which is the subject of the invention comprises:
• a lifting pump adapted to raise the water discharged into the grating tray from the low point of said tray to the discharge compartment.
• This embodiment makes it possible to discharge the contaminated water contained for example in concrete bins, or to wash parts directly on the grating of the grating tray, said tray being advantageously placed at ground level.
• the grating tray is suitable for support the weight of a vehicle on the spill surface.
• said tray is simply placed on the washing area, without the need for masonry.
• the grating tray comprises means for producing a washing jet directed towards surfaces of said tray.
• a washing jet directed towards surfaces of said tray.
• the means for producing the washing jet are fed with the water contained in the suction compartment.
• the water circulates in closed circuit which makes it possible to reduce the water consumption on the building site.
• the grating tray comprises a pre-filtration means between the discharge surface and the bottom of said tray.
• This first pre-filtration means makes it possible to stop the debris, the aggregates, and the coarser particles before they reach the lifting pump of the grating tray, thereby protecting said pump and accelerating the subsequent filtration steps. .
• the device according to the invention comprises, according to this last embodiment, means for directing a washing jet on the pre-pre-filtration means.
• the watering of this means makes it possible in particular to progressively dissolve the aggregates of cement products.
• the pre-filtration means comprises a web consisting of a geotextile complex.
• This fabric fulfills both the pre-filtration function but also allows easy evacuation of larger debris.
• the geotextile complex of the pre-filtration fabric is able to let particles with a diameter of less than 500 ⁇ pass.
• the pre-filtration fabric is laid directly on the grating or is stretched under the grating.
• the first variant provides easier installation and retrieval of said fabric.
• the second variant makes it possible to avoid degrading the fabric, particularly when maneuvering machines on the spill surface.
• the filtering means between the filtration compartment - decantation and the suction compartment of the device of the invention constitutes a partition between these two compartments and comprises a structural frame supporting a filter element.
• This arrangement makes it possible to use a maximum filtration area compared to the general size of the tank.
• This advantageous arrangement is made possible by the fact that the filtering medium is not subjected directly to the pouring flow, which flow, liable to degrade the filter, is broken by the passage of the pouring compartment in the filtration compartment - decantation by overflowing said spill compartment.
• said filtering means is removable, which allows easy replacement.
• the tank object of the invention comprises:
• filtration means which advantageously comprise a cylindrical cartridge, allow additional filtering of the wash water to reduce the content of particles other than sediment or very fine particles.
• the tank object of the invention comprises:
• the tray object of the invention comprises:
• the tank is a compact and transportable assembly comprising all the elements necessary for the implementation of recycling washing water on site.
• the tank object of the invention comprises, in the discharge compartment:
• a large flexible bulk container whose envelope is made of a fabric, said ventilated, able to let particles with a diameter of less than 5 mm.
• Such a container very solid, only ensures the retention of large particles and allows a rapid flow of water sludge discharged to the filtration tank - decantation.
• the large flexible bulk container comprises a nonwoven filter liner capable of retaining the particles With a diameter greater than 100 ⁇ m (100 ⁇ 10 -6 m), the said large vessel participates in a first thorough filtration of the water discharged.
• the device which is the subject of the invention is connected and comprises a plurality of sensors making it possible to monitor its operation.
• the device which is the subject of the invention comprises a sensor able to measure the flow of water in the discharge pipe of the pump of the first set of tanks.
• This sensor makes it possible to know the quantity of water reprocessed.
• this connected device comprises a sensor capable of measuring the flow rate in the discharge duct of the pump of the grating tray. The comparison of this information with the previous one makes it possible to measure the quantity of recycled soiled water.
• the device which is the subject of the invention comprises an injected C0 2 flow sensor.
• This information makes it possible to know the quantity of carbon dissolved in the reprocessed water, and is useful in particular to draw up a carbon balance of the building site.
• the invention also relates to a method for monitoring the operation of an installation according to the connected embodiment, which method comprises the steps of:
• ii. aggregate the information thus received into consumption indicators; iii. transmit the indicators to a terminal of the user.
• FIG. 1 shows in a perspective view, broken away and exploded, an embodiment of the first set of tanks of the device object of the invention
• FIG. 2 represents, in a profile view and according to a section BB defined in FIG. 3, an embodiment of the grating tray of the device which is the subject of FIG. the invention;
• FIG. 3 is a front view and in section A-A defined in Figure 2 of the grating tray according to an embodiment of the device of the invention
• FIG. 4 shows in perspective view an embodiment of the device of the invention, combining two sets of bins, and connected to a computing center;
• FIG. 5 shows in the same view as Figure 2, an embodiment of the device of the invention comprising a pre-filtration assembly at the spill surface.
• the device of the invention comprises two sets of bins.
• a first set of tanks is intended for the filtration and the decantation thrust and delivers a water cleaned and corrected in pH.
• the two sets of bins are usable independently of each other, and according to the embodiment consist of two separate sets or an integrated set.
• the first set of bins of the device of the invention comprises a single tray (100) made of folded steel and welded.
• a first (1 10) compartment, said spill compartment, is adapted to receive a GRSV (1 11).
• Said FIBC is constituted for example by a woven and aerated polypropylene cloth so as to let particles of a diameter greater than 5 mm pass.
• the FIBC (1 1 1) is doubled on its inner surface with a non-woven fabric producing a filter blocking particles with a diameter greater than 100 ⁇ m (100 ⁇ 10 -6 m).
• overflow lumens (1 12) so that when dirty water or sludge containing cementitious products is discharged into the FIBC (11 1), the latter do not enter the filtration compartment - decantation after a first settling and a possible first filtration operated through the wall of the FIBC when it is provided with a filter film on its inner face.
• the defiltration - settling compartment (120) is in hydraulic communication with the discharge compartment (110) through the overflow lights (112). This filtration compartment - decantation is the largest of the tank in volume.
• a filtering partition (121) made up of, for example, a metal frame on which a textile (122) filtering device capable of stopping particles with a diameter greater than 50 ⁇ m (50 ⁇ 10 -6 m) or greater is installed. at 20 ⁇ (20.10 "6 m) if filtration has already been done through the wall of the FIBC.
• the filter element (122) is here represented, for legibility reasons, in the form of a flat canvas, other embodiments are possible, in particular the use of a pleated fabric so as to increase the filtering surface.
• the filter partition (121) is removable to allow cleaning or replacement of the filter element.
• the third compartment (130) is called suction compartment. It is in hydraulic communication with the filtration compartment - decantation via the partition (121) filter so that the water arriving in this compartment has undergone a settling and filtration capable of removing the fines that can erase the pumps.
• a hydraulic pump (131) is installed on the top of the compartment to pump the water therein.
• the discharge (142) of the pump sends by a suitable conduit (not shown) the water thus sucked to the inlet (142) of a filter (141) cartridge.
• said cartridge filter comprises a cylindrical cartridge pleated star providing a filtration less than 20 ⁇ , a sand filter, or a resin filter.
• This set (141) of filtration is installed in a compartment (140) of the tray (100) of the first set of the device object of the invention, which compartment (140) is sealed from the other compartments.
• a compartment (150), separate from other compartments, is adapted to accommodate a bottle (151) of carbon dioxide (C0 2 ).
• Said CO 2 is injected into the discharge flow of the pump, at the outlet (143) of the filter (141), via a device (153) for injecting CO 2 comprising a venturi.
• the gas is injected into the neck of said venturi during the delivery of the pump.
• Coarse sludge and solid residues are recovered in the FIBC (11 1) and are easily evacuated.
• the tray (100) comprises on one of its faces a connection and sealed control box (not shown), comprising means of connection to a source of electric power. for operation of the pump, an on / off switch, protection fuses and C0 2 flow adjustment buttons.
• the compartments of the tray (100) of this embodiment are separate bins, so, in particular, to facilitate their installation and organization of the washing area implementing the device object of the invention on site.
• the compartment (120) filtration - decantation is connected by a chute to a washing podium, in order to recover the soiled wash water, the washing water used on said podium being supplied by the first pump (131), and the spill compartment (1 10) is made in a separate tank and is used for the discharge of water comprising coarse particles, especially water first rinsing a truck spinner or a concrete bucket, directly poured into said compartment.
• said compartment (1 10) is hydraulically connected to the compartment (120) filtration - decantation by a chute.
• the device object of the invention comprises, according to an exemplary embodiment, a tray (200) said grating tray.
• Said tank is a self-supporting structure capable of supporting the weight of a vehicle.
• said bin (200) is of a length of the order of 6 meters for a width of the order of 2 meters and a depth of about 50 cm.
• This tray (200) grating is easily installed on site in a light excavation and is itself a washing area and spill without it being necessary to integrate into a masonry.
• Said trough comprises a discharge surface (210) consisting for example of a galvanized steel grating supported by transverse beams (21 1). It comprises a bottom (212) sloping orienting the liquids to a low point.
• the tank (200) comprises a collection compartment (220) situated at said low point and comprising a suitable lifting pump (231). aspirating a liquid or sludges comprising solid particles, for example a centrifugal pump.
• Said pump (231) comprises a discharge pipe (232) which discharges the liquid sucked into the collection compartment (220) in the discharge compartment of the first set of tanks of the device which is the subject of the invention.
• said wall has perforations 10 mm in diameter.
• said perforated wall (221) is removable in order to facilitate the cleaning of the grating tray.
• the wall of the tray (200) slatted are rinsed by a jet of water by means of a ramp (250) rinsing, which ramp is, according to an embodiment, powered by the water drawn from the suction compartment of the first set of tanks of the device object of the invention.
• the device that is the subject of the invention comprises, for this purpose, a distribution valve (170), said valve being manual or controlled, making it possible to distribute the flow of filtered and decanted liquid sucked by the first pump (131). ) between a first output (171) directed to the cartridge filter (141), which flow is, if necessary, processed to lower the pH, and a second output (172) connected directly to the input (251) of the rinsing ramp of the grating tray.
• the water treated to lower its pH to a value between 6.5 and 8.5 is directed, for example, to one or more washing guns, for example a washing gun on the washing podium, and a washing gun on the ground washing area.
• a booster means is installed on the circuit connecting the outlet of the cartridge filter and a washing gun so as to allow high pressure washing.
• the pumping sequences of the two pumps (131, 231) of the device according to the invention and the flow rates directed towards the washing guns and the rinsing ramp are, according to an exemplary embodiment, controlled by a programmable controller included in the housing. control.
• the bottom (212) of the grating tray comprises a double slope to channel spilled material in the tray grating to the collection compartment.
• the flushing ramp (250) acts on the bottom slopes (212) to push debris toward the center.
• the tray (200) slatted and the first set (100) of trays are integrated in a device (400) single.
• said assembly comprises flow rate sensors (not shown) able to measure the flow of water in the discharge duct (232) of the lifting pump of the trough tray (200), the flow rate of water passing through the discharge pipe of the pump (131) of the first set of tanks, and the flow rate of C0 2 injected into the reprocessed water.
• the sensors send their information to the control automaton of the device of the invention, which automaton comprises a cellular link (490), enabling it to exchange data with a computing center (491).
• the controller also sends information relating to its model, for example a commercial reference, as well as indications relating to its geolocation.
• the computer center generates indicators on the consumption and reprocessing of water on the construction site. These indicators are delivered to the terminals (492) of the users, who users are continuously informed of the operation of the device.
• the cellular connection is for example made by ultra narrow band radio (UNB) in the frequency 866 MHz or 902 MHz, for example using the Sigfox ® protocol.
• UMB ultra narrow band radio
• the user is able to know at any time, the amount of water used, the amount of water recycled, the amount of C0 2 dissolved in the treated water.
• This data is archival and allows the user to draw up periodic consumption reports or provide proof of reprocessing to the competent authorities.
• other sensors are installed and make it possible, for example, to measure the flow rate of water passing through the cartridge filter (141) or even the temperature of the water.
• Figure 5 according to another embodiment of the tray (500) slatted comprises means (510, 51 1) of pre-filtration.
• a geotextile (510) is stretched on a mesh (51 1) under the crosspieces (21 1) supporting the gratings (210).
• a washing system (550) is placed above the fabric.
• Said fabric is for example configured to pass relatively fine particles, for example of a diameter less than 1 mm or less than 0.5 mm without these values being strictly limiting.
• the smaller debris and more particularly the aggregates of cement products with sand or gravels, are stopped by the canvas (510).
• the fabric being regularly watered by the washing system (550), said aggregates are discarded, only the fine particles and the milt being transmitted to the bottom of the tank.
• the geotextile fabric is placed on the grating. Thus, removal of debris and coarse particles is achieved from time to time by trapping them in the web.
• the above description and the exemplary embodiments show that the invention achieves the desired objectives, in particular, it allows a quick installation of a washing, recycling and water treatment assembly on a construction site.
• the device according to the invention comprises all the pre-installed treatment means, it is easily connected on site and easily evacuated.
• the use of a FIBC for the spill is economical and allows, where appropriate, the reuse of containers used to bring other materials on site.
• the device of the invention is connected and allows a supervisor to know the operation and performance of the remote site, and archive these performance for subsequent analysis.

Applications Claiming Priority (2)

Publications (1)

Family

ID=53404593

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Family Cites Families (5)

• 2014
  • 2014-12-31 FR FR1463506A patent/FR3031100A1/fr active Pending
• 2015
  • 2015-12-31 EP EP15820553.4A patent/EP3240757A1/de active Pending
  • 2015-12-31 DE DE212015000295.0U patent/DE212015000295U1/de active Active
  • 2015-12-31 US US15/540,776 patent/US20190152799A1/en not_active Abandoned
  • 2015-12-31 WO PCT/EP2015/081475 patent/WO2016107930A1/fr active Application Filing

Also Published As

Similar Documents

Legal Events