RU59047U1 - WATER AND INDUSTRIAL WASTE WATER TREATMENT PLANT - Google Patents

Abstract

The utility model relates to the integrated treatment of domestic, surface, natural and industrial waters and is intended for the simultaneous purification, disinfection and deodorization of water. The objective of the proposed technical solution is to create an economical installation that allows complex water treatment, reducing the duration and complexity of the cleaning process. A plant for treating domestic and wastewater, contains a device for removing oil products and suspended solids, including a hydrocyclone flocculator, a thin layer multi-hydrocyclone, a thin layer clarifier in a suspended layer, a thin layer coalescing tube block sedimentation tank, a pressure clarifier separator for oil products, an aerator-flotator and a coalescing filter a flotation chamber, as well as an aerator-ozonizer and a reactor tank, including a cavitation chamber, a reaction chamber, and an ultrasonic emitter made with a cascade waveguide m, a single tank reactor, on the cover of which foaming agents of incoming water are made, made in the form of cylindrical glasses, in addition, the installation contains a granular loading filter installed after the reactor tank, and a press filter associated with the device for removing oil products and suspended solids, tank reactor and filter granular loading. 1 ill.

Description

The utility model relates to the integrated treatment of domestic, natural and industrial waters and is intended for the simultaneous purification, disinfection and deodorization of water.

A known installation that implements a method for the treatment of domestic wastewater according to the patent of the Russian Federation No. 20159529, M. cl. 5 C 02 F 9/00. The installation contains a sand trap for separating heavy and coarse mineral contaminants (mainly sand), a grill grinder that provides crushing of contaminants directly in the flow channel of the effluent, a mixer in which household effluents are mixed with chemical reagents coming from the reagent preparation and dosing unit, a sump for precipitation of precipitating substances, a photochemical reactor that ensures the decomposition of colloidal and dissolved organic substances by UV radiation, as well as the destruction of bacteria and a filter for trapping metal ions and metalloids.

Such an installation allows water purification, including mechanical purification, followed by exposure to the liquid with a physical factor - ultraviolet and filtration, but the degree of purification with heavily polluted effluents in most cases is insufficient to achieve the purification indices that meet the norms of domestic and international standards.

Also known is a water treatment plant, including a device for removing oil products and suspended solids, made in the form of a sump with an oil trap, a device for

saturation of effluents with air and ozone, a cavitation chamber, a reaction chamber, an ultrasonic emitter and a system of pumps for supplying water for purification technological operations (RF patent N 2116264, M. cl. 6 C 02 F 9/00, 1998).

The disadvantages of the known installation for the treatment of domestic wastewater are its high cost, energy intensity, duration and complexity of the cleaning carried out with its help, as well as a significant consumption as an activated carbon filter.

The objective of the proposed technical solution is to create an economical installation that allows complex water treatment, reducing the duration and complexity of the cleaning process.

The problem is solved due to the fact that the installation for the treatment of domestic and industrial wastewater, including a device for removing oil products and suspended solids, a device for saturating effluents with air and ozone, a cavitation chamber, a reaction chamber, an ultrasonic emitter and a pump system for supplying water for technological operations complex water purification, according to the claimed technical solution, the device for removing petroleum products and suspended solids contains in series interconnected hydrocyclone-f an oculator, a thin-layer multi-hydrocyclone, a thin-layer clarifier in a suspended layer, a thin-layer coalescing tube block settler, a pressure clarifier-separator for oil products, an aerator-flotator, a coalescing filter and a flotation chamber, moreover, a cavitation chamber, a reaction chamber and an ultrasonic emitter made with combined into a single tank reactor, on the cover of which foaming agents of incoming water are installed, made in the form of cylindrical glasses,

in addition, the installation further comprises a granular loading filter installed after the reactor tank, and a press filter associated with a device for removing oil products and suspended solids, a reactor tank and a granular loading filter.

The essence of the technical solution is illustrated by the drawing, in which figure 1 shows a block diagram of the inventive installation, figure 2 is a block diagram of a device for removing petroleum products and suspended solids.

A plant for treating domestic and waste water includes a device for removing petroleum products and suspended solids 1, an aerator-ozonator 2, a tank reactor 3, and a filter of granular charge 4, which are sequentially installed and interconnected by pipelines. In addition, the plant for treating domestic and waste waters contains a press -filter 5 associated with a device for removing oil products and suspended solids 1, a tank reactor 3 and a filter of granular charge 4. The installation also contains pumps N-1, N-2, N-3 and N-4, supplying water through the process chain in accordance existing installation blocks.

A device for removing oil products and suspended solids 1 includes a hydrocyclone-flocculator 6 connected in series with nozzles for automatically supplying the required amount of reagents (not shown in the drawing), a thin-layer multi-hydrocyclone 7, a thin-layer clarifier in the suspended layer 8, a thin-layer coalescing tube block sedimentation unit 9, pressure settler-separator of oil products 10, aerator-flotator 11, coalescing filter 12 and flotation chamber 13. The tank reactor 3 includes an ultrasonic emitter, neny cascaded waveguide (not shown).

On the lid of the tank of the reactor 3 installed foaming agents of the incoming water, made in the form of cylindrical glasses (not shown).

Installation works as follows.

Untreated water with inorganic and organic pollutants is pumped by an H1 pump to a device for removing oil products and suspended solids 1, containing a hydrocyclone flocculator, 6 a thin layer multi-hydrocyclone, 7 a thin layer clarifier in a suspended layer, 8 thin layer coalescing tube block sediment 9, pressure discharge oil separator 10 , aerator-flotator 11, coalescing filter 12 and flotation chamber 13.

Preliminarily, if necessary, oily effluents or high-mud waters can be mixed with reagents. Getting into the hydrocyclone-flocculator 6, the untreated water acquires a rotational movement, goes down to the conical part of the hydrocyclone, and under the action of centrifugal forces, the suspension is separated here (oil products up, sludge down), as well as further formation and enlargement of flocs (flocs).

Further, the flow changes the direction of motion and, heading upward, enters the thin-layer multi-hydrocyclone 7 formed by coaxially arranged plates. There is still a centrifugal force field, and the separation of the volume into thin layers provides for a laminar flow regime.

Further, the effluents enter the clarifier in the suspended layer 8, where in the cylindrical part of the installation, with a decrease in the velocity of the upward flow to 1 mm / s, the action is enhanced

gravitational field. Here, the suspended particles form a kind of filter - a weighted layer, and the separation of it with thin-layer plates, subject to continued flow rotation, also involves the separation of the suspension due to centrifugal forces i.e. the effect of separation of the suspension in a thin-layer multihydrocyclone continues.

After the clarifier in the suspended layer, the drains, continuing to move upward, fall into the thin-layer coalescing tubular block of the settler 9, formed by tubular elements located at an angle of 60-45 ° to the horizon. The calculation of the tubular block is based on the hydraulic particle size (sedimentation rate, ascent) of particles, and the total length of the block tubes can reach several kilometers. In a thin-layer tubular block, thin-layer deposition (ascent) of particles occurs, and since the tubes are made of coalescing material, coalescence (coarsening) of oil particles on the coalescing surface of the tubes occurs.

Then, the effluent enters the pressure clarifier-separator of oil products 10, where the pop-up oil products are displaced by the volume of the flotation chamber and accumulate on a limited free surface in a thick layer, from where they are discharged by the oil product collector.

Then, the flow again changes its direction and, moving downward, is tangentially introduced into the aerator-flotator 11, where it again acquires rotational motion and encounters a counterflow of air bubbles from the air-water mixture supplied here, which contributes to the separation and flotation of fine particles of contaminants.

In the conical part of the aerator-flotator, the flow again changes its direction of motion and, moving upward, enters the coalescing filter 12. Here, finely dispersed particles of oil products coalesce (coarsen on granules of the coalescing charge) and the flocs formed float into the settling zone of the coalescing filter, from which oil is also removed by the reservoir .

Next, the flow enters the flotation chamber 13, where, through pressure flotation, the final purification of water from the smallest particles of contamination occurs. Petroleum products are collected in a collection of petroleum products 14, which is periodically cleaned. Suspended substances in the form of sludge are fed to the press filter 5.

To remove the remaining metals, surfactants, phenols, sulfates, and to reduce COD, BOD, and LV, purified water from oil products and suspended solids is pumped to a nanosecond aerator-ozonator using an H2 pump, where it is saturated with oxygen and ozone. Next, water saturated with ozone enters the foaming agent to start the coagulation process, then the foam enters the tank reactor made as a hydrocyclone. Then, in the reactor tank, the pollutants are oxidized and transferred to an insoluble state. To reduce the reaction time, an ultrasonic emitter with a cascade waveguide is installed in the reactor tank. Depending on the composition of the pollutants, the operating frequency of the ultrasonic emitter can range from 16.6 to 23 kHz. Residual ozone is supplied with the air-water mixture to the flotation stage.

From the tank-reactor 3, water is pumped by the NZ pump to the filter of the granular charge 4 for final cleaning, and from there to the clean tank

water (not shown in the drawing). The washing of the filter of the granular charge 4 is carried out by the reverse flow, using the pump H4, while the water supply to the filter is previously blocked by a ventel. The filter is flushed in automatic mode, by the pressure difference in the filter cavities. The washing water of the filter is first supplied to the press filter 5 to remove sludge, and from the press filter 5 water enters the device for removing oil products and suspended solids 1.

Thus, the inventive installation significantly reduces investment in the construction of wastewater treatment plants, allows to obtain high-level effluents, as well as reduce operating costs. The unit is suitable for cleaning not only domestic and industrial effluents, but also for treating surface and natural waters.

Claims (1)

Installation for the treatment of domestic and industrial wastewater, including a device for removing petroleum products and suspended solids, a device for saturating effluents with air and ozone, a cavitation chamber, a reaction chamber, an ultrasonic emitter and a pump system for supplying water for technological operations of complex water treatment, characterized in that The device for removing oil products and suspended solids contains a hydrocyclone-flocculator in series connected with each other with nozzles for automatically supplying the required quantity reagents, a thin-layer multi-hydrocyclone, a thin-layer clarifier in a suspended layer, a thin-layer coalescing tubular block-settler, a pressure clarifier-separator of oil products, an aerator-flotator, a coalescing filter and a flotation chamber, moreover, a cavitation chamber, a reaction chamber and an ultrasonic emitter made with combined in a single reactor tank, on the cover of which foaming agents of incoming water are installed, made in the form of cylindrical glasses, in addition, the installation of optionally contains a granular loading filter installed after the reactor tank, and a press filter associated with a device for removing oil products and suspended solids, a reactor tank and a granular loading filter.