RU2100291C1 - Waste water treatment installation - Google Patents

Abstract

FIELD: waste water treatment. SUBSTANCE: installation has ring-shaped chamber separated by horizontal barrier into upper and lower parts. Chamber embraces outside primary settler. In lower part of chamber, secondary settler and thin-layer module are disposed, and, in its upper part, posttreatment filter. Lower part communicates with upper one through thin-layer module. Outside the ring-shaped chamber, there is electrolyzer connected to primary settler through intake pipeline and secondary settler through drain pipeline. Inlet pipeline is connected with primary settler, and outlet pipeline with posttreatment filter. EFFECT: improved design. 3 cl, 2 dwg

Description

 The invention relates to wastewater treatment of small objects and can be used mainly in rural areas, cottages, camping, rest houses, boarding houses, camp sites, etc. for the treatment of domestic and close to them in composition of wastewater low costs with limited areas for treatment facilities.

 A compact wastewater treatment plant is known, comprising a primary settling tank with a sand trap located above each other, a metering chamber, a biofilter, a secondary settling tank and a fermenter, as well as a source water supply pipe and a discharge channel [1] The biofilter is divided into upper and lower tiers, having independent distribution and drainage systems.

 Wastewater is supplied through a feed pipe through a sand trap to the primary sump, poured through the ridges into the metering chamber, the upper and lower tiers of the biofilter and drainage systems flow by gravity, enters the secondary sump and is discharged from the installation through the outlet channel.

 The installation does not provide a sufficiently high degree of wastewater treatment, as it has few stages of treatment. The disadvantage of the installation is the fast clogging of the biofilter, since poorly treated wastewater passes through it. As a result, frequent flushing and replacement of the biofilter loading is required. This increases the complexity and creates inconvenience to service. Due to the fast clogging of the biofilter, the reliability of the installation is reduced.

 Closest to the invention in terms of essential features is a compact sewage treatment plant containing aeration chambers, clarification chambers (primary sump), sumps (secondary sump), a thin-layer module, electrolyzer, post-treatment filters, inlet and outlet pipelines [2] The cell is located in control unit between aeration chambers and sedimentation tanks.

 Wastewater flows through the inlet pipe into the aeration chambers, after which they are moved to the clarification chambers. Then, passing through the thin-layer modules, the wastewater is poured into the sumps, in which additional clarification of the water is carried out using additional thin-layer modules. The purified water enters the filters for post-treatment, where its final clarification and post-treatment are carried out. Next, the purified water is fed into the contact tank and the water is disinfected with sodium hypochlorite produced by the electrolyzer.

 The station provides for different stages of treatment, which allows for a high degree of wastewater treatment. The aftertreatment filters are less likely to clog, as pre-treated, sufficiently clean wastewater is passed through them.

 However, the station is structurally complex. To accommodate the station requires a large area. Devices, electrical contacts, metal parts of the electrolyzer and other devices located in the control unit quickly corrode under the influence of aggressive gases and water vapor, which reduces the reliability of the station and increases operating costs.

 The objective of the invention to create a structurally simple and reliable installation, occupying a small area, convenient in operation and providing a high degree of wastewater treatment.

 The problem is solved in that the installation for wastewater treatment, containing a primary sump, a secondary sump, a thin-layer module, an electrolyzer, a post-treatment filter, inlet and outlet pipelines, according to the invention has an annular chamber divided by a horizontal partition into upper and lower parts covering the primary sump, moreover, the secondary sump and a thin-layer module are located in the lower part of the annular chamber, a post-treatment filter is located in the upper part of the annular chamber, the lower part of the annular chamber is communicated the upper part through the thin-film module, and the cell was positioned on the outer side of the annular chamber and communicates with the sump through the primary intake conduit and to a secondary sedimentation tank through a drain pipe.

 The aftertreatment filter is made in the form of a series of filter cartridges installed radially in a circle with gaps relative to each other, and on the top of the filter cartridge there is an overflow for water to flow over the filter cartridge.

 The thin-layer module is located on the diametrically opposite side of the drain pipe.

 Thanks to the annular chamber, divided by a partition into the upper and lower parts, the placement of the secondary sump and a thin-layer module in its lower part and the post-treatment filter in its upper part, the post-treatment filter in the form of a series of cassettes installed radially in a circle, as well as the installation diagram without aeration chambers that require a large area for their placement, the compactness of the installation and the possibility of its placement in a small area are achieved. At the same time, a high degree of wastewater treatment is achieved due to their passage along elongated paths around the primary sump, electrochemical coagulation of wastewater contaminants in the electrolyzer, the use of an upward laminar flow when flowing from the secondary sump through a thin-layer module into the post-treatment filter, multiple filtration with settling in the filter tertiary treatment.

 The location of the electrolyzer on the outside of the annular chamber increased the reliability of the installation and ease of use by reducing the corrosive effects of gases and vapors on the electrical contacts and metal parts of the electrolyzer and control devices. By performing a post-treatment filter in the form of a series of filter cassettes, installed cassettes installed radially in a circle with gaps relative to each other and equipping the cassettes with overflows, not only a high degree of wastewater treatment was achieved, but also the possibility of long-term reliable operation of the filter without rinsing or replacing it was ensured.

 Other technical solutions containing the features set forth in the claims as distinctive are not known, which allows us to conclude that the claimed installation meets the inventive level. In FIG. 1 shows a wastewater treatment plant, side view; in FIG. 2 same, top view.

 The installation contains a primary sump 1, an annular chamber 2, divided by a horizontal partition 3 into two parts, a secondary sump 4, a thin layer module 5, an electrolyzer 6, a post-treatment filter 7, an inlet pipe 8 and an output pipe 9. A secondary sump 4 and a thin layer module 5 are located in the lower part of the annular chamber 2, and the post-treatment filter 7 is located in the upper part of the annular chamber 2. The lower and upper parts of the annular chamber 2 communicate with each other through a thin-layer module 5 attached to the partition 3. The inlet pipe 8 with bschaetsya primary clarifier 1. In the primary settling tank 1 is mounted the level sensor 10. The cell 6 is located on the outside of the annular chamber 2 and communicates with the primary sump 1 through the intake pipe 11 and pump 12, and with the secondary sump 4 through the drain pipe 13, the open end of which is placed on the diametrically opposite side of the thin-layer module 5. Post-treatment filter 7 made in the form of a series of filter cassettes 14 mounted radially in a circle with gaps 15 relative to each other. The upper edge 16 of each filter cartridge 14 is made in the form of an overflow for the flow of water over the filter cartridge 14. The inlet of the aftertreatment filter 7 communicates with the thin-layer module 5 through a low partition 17, and the output part communicates with the outlet pipe 9 and is finished with a high impermeable partition 18 from the thin-layer module 5.

 Installation works as follows. Wastewater to be treated flows through the inlet pipe 8 to the primary sump 1, where the primary sedimentation of wastewater and accumulation of sludge at its bottom occurs. When the drains reach the preset level, the sensor 10 activates the pump 12. The pump 12 pumps the water clarified in the primary sump 1 through the intake pipe 11 and delivers it to the electrolysis cell 6, where the waste water is saturated with iron hydroxide coagulant formed during the electrochemical dissolution of steel electrodes. The wastewater saturated with the coagulant is discharged into the secondary sump 4 through the drain pipe 13. When the water level in the primary sump decreases to a predetermined value, the sensor 10 switches off the pump 12. In the secondary sump 4, sedimentation of coagulated impurities occurs on both sides of the primary sump 1. The clarified water passes through a thin-layer module 5, where sediment is suspended, poured through a low baffle 17 into the after-treatment filter 7 and passes along an annular path around the primary settler 1. During movement along an annular path, wastewater is filtered in filter cartridges 14 filled with filter material ( mineral or synthetic fibers, polyurethane foam, etc.). Water sequentially passes through all cartridges 14, in which fine impurities are retained. If one or several cassettes 14 become clogged, the water to be treated is poured through their upper edges 16 into the gaps 15 located behind them, settled in the gaps 15 and then filtered in the cassettes 14 that follow the movement of water. The filtered water is discharged from the installation through the outlet pipeline. During operation, clogged cassettes 14 are periodically washed or replaced, and sediment accumulated in primary 1 and secondary 4 sedimentation tanks is removed. The cell 6 is protected from gases and vapors released during wastewater treatment, since it is placed out of their reach.

Claims (3)

 1. Installation for wastewater treatment, comprising a primary sump, a secondary sump, a thin-layer module, an electrolyzer, a post-treatment filter, inlet and outlet pipelines, characterized in that it has an annular chamber divided by a horizontal partition into upper and lower parts covering the primary sump, a secondary sump and a thin-layer module are located in the lower part of the annular chamber, a post-treatment filter is located in the upper part of the annular chamber, the lower part of the annular chamber communicates with the upper part through onkosloyny module, and the cell was positioned on the outer side of the annular chamber and communicates with the sump through the primary intake pipe and a secondary sump through the discharge conduit.  2. Installation according to claim 1, characterized in that the aftertreatment filter is made in the form of a series of filter cartridges mounted radially in a circle with gaps relative to each other, and on top of the filter cartridge there is an overflow for the flow of water over the filter cartridge.  3. Installation according to claim 1, characterized in that the thin-layer module is located on the diametrically opposite side of the drain pipe.

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