RU2000275C1 - Unit for thorough biological purification of waste waters and for processing of deposits - Google Patents

Abstract

Usage: in biological wastewater treatment of small settlements, as well as in municipal services and various industries for the treatment of domestic wastewater and those close to them in composition. SUMMARY OF THE INVENTION: the installation comprises pumps with a pressure line equipped with a tank, flowmeter and labor. The invention relates to the biological treatment of wastewater in small towns and can be used in municipal services and various industries for the treatment of domestic and similar wastewater. Biological treatment plants are known, including aerotanks operating in the full oxidation mode or in the exhaust gas discharge mode with a plug valve, a receiving chamber equipped with a bypass channel with its own grill, gratings, a tangential sand trap with a Sand airlift, and a mesh box for accumulating and flowing sand, a pallet for returning water from the mesh box to the receiving chamber, a drain channel divided into two channels, each of which is equipped with a gate and a measuring tray, a primary sump, a biore Actor and aerobic stabilizer combined in one tank and separated by a continuous longitudinal partition, primary aeration tank. equipped with an airlift with a constant flow tank and porous filler, a secondary sump with thin-layer modules and an adjustable gear spillway, connected to a return sludge regenerator tray. secondary aeration tank with a ruff loading from a mixture of lavsan and kapron, a tertiary sump equipped with an airlift for transferring the biofilm to the aerobic stabilizer and thin-layer modules, which use a ruff from the ruff loading, removal of purified water and silt and sand pads. 1 sludge of prolonged aeration with separate stabilization of excess active sludge 1. In most cases, plants do not include primary sumps, as secondary sumps are used either separately located or arranged together with erotenki tanks 2. If necessary, deeper cleaning plants are equipped with filters that remove suspended substances. 73 C hO О О о ю vj | СЛ; о

Description

l, (a color of organic pollutants and total phosphorus sprinkled with these substances. 1 its cinemiline in filters is practically unsuccessful. h f3.

The disadvantages of these plants are the not very high degree of purification, the instability of the qualitative composition of the treated wastewater caused by the significant uniformity of the composition and consumption of wastewater from small places in the sewage treatment plants, as well as the large volume of plants. If a significant .Oti in gh aeration in the aeration tank (24 h) provides averaging of the composition of the processed years, then the unevenness of its consumption is not m lhzhis.chnts

We have higher requirements for the quality of a pure BIRTH, than it is more desirable to exclude fr mtslN: the total influence on the work of the joint--in (-1, whether or not their hydraulic

The closest in technical -; , donkey and the achieved effect to the pre-KMOMy are setting a deep bio-po. and cskoy wastewater treatment, such as Ruchey g. at the university-prefabricated stations 4.

 water passes through the intake chamber. PRSKO / SUVK and the measuring tray, low-frequency biological treatment is performed, and the EGM is (bast cleaning. The biological and calcification unit includes an anaerobic hi-.opt actor, a zerotenk with nozzles for culture, a sedimentation tank with a suspended layer and thin-layer elements. deep cleaning includes aerobic biorns ctor. sump and contact tank.

The disadvantages of the installation are the low degree of purification, as well as the instability of the qualitative composition of the treated wastewater due to the uneven flow rate and composition of the wastewater supplied to the treatment.

The technological result obtained from the use of the proposed installation consists in a high degree and stability of deep wastewater treatment from organic compounds, nitrogen and phosphorus compounds, oil products, precipitates, as well as a reduction in the volume of technological tanks

The drawing shows the installation diagram.

The installation comprises a pumping station, including a receiving tank 1, pumps 2, on the pressure line of which a tank 3 is installed with a pipe 4 for discharge of excess flow with a plug valve 5 and a flow meter 6, a receiving chamber 7 with a grill In an installed channel r at an angle

60 ° to the horizontal and made of round rods made of metal rods with the possibility of rotation around a horizontal axis fixed on the sides of the channel and bypass channel 9 with its grating located above the main channel, tangential sand trap 10c Sand airlift 11. located in the center of the sand trap, mesh box 12 dl

accumulation and flow around the sand, a tray 13 for returning water from the mesh box to the receiving chamber and a drain channel 14, divided into two channels, each of which is equipped with a gate 15 and a measuring burden 16, a primary bioreactor sump 17 with a 1R rough load and aerobic the stabilizer 19, combined in one tank and separated by a continuous longitudinal partition 20, the primary sump-bi0, the reactor 17 is equipped with an adjustable gear spillway 1. connected to the primary aeration tank 22 with a porous filler 23, and airlift 24 with the tank 25 post a constant flow rate for supplying a constant flow rate to the secondary settling tank 26 with thin-layer modules 27 and an adjustable gear spillway 21 connected to the chute-regenerator 28 of the return sludge with airlift 29 for transferring excess activated sludge to the aerobic stabilizer, along the bottom of which there is a hole pipe 30 for Barbotage. secondary aeration tank 31 with a ruff loading 18 from a mixture of lavsan and kapron, a tertiary sump 32 equipped with airlift 35 for transferring the biofilm to the aerobic stabilizer 19 and thin-layer modules made from ruff loading 33, and removal of purified water 34, sand 36 and silt 37 sites .

0 Installation works as follows

Wastewater is supplied to the receiving tank 1, from where it is pumped by pumps 2 to the receiving chamber 7 Considering that the pump performance does not coincide with the capacity of the treatment facilities, a tank 3 with a discharge pipe 4 for discharge of excess flow into the receiving tank 1 and a flowmeter 6 are installed on the pressure line

0 in order to control the flow supplied to the installation. The receiving camra 7 serves to quench the pressure of the incoming wastewater, from which the wastewater enters the grate 8 with manual removal of waste. Lattice

5-8 is installed in the channel at an angle of 60 ° to the horizontal, mounted of metal bars of circular cross-section and can rotate around a horizontal axis. fixed on the sides of the channel In case of untimely removal of garbage from the grate, a side bypass channel 9 is provided, fenced off from the main channel by vertical gratings. After the gratings, the drains through the pipe are fed into a tangential sand trap 10 below the water level. The sand settled in the sand trap, airlift 11 located in the center of the sand trap, enters the mesh box 12 to accumulate and flow around the sand, from where the water flows into the tray 13 and then returns to the receiving chamber 7, sand is fed from the mesh box 12 to the sand pads 36. An annular chute for clarified effluents is located along the upper edge of the sand trap 10, from which water is supplied through the drain channel 14 to the primary bioreactor sump 17 with a brush loading 18. The drain channel 14 is divided into two channels, each of which is equipped with a gate 15 and measures water spillway 16, which are used to supply equal costs to the two treatment plants. In the case of operation of one unit, the second channel is blocked by a gate.

In the bioreactor sump 17, anaerobic treatment of water is carried out using 18 microorganisms immobilized on a clean charge, and suspended solids of the treated wastewater are reduced to 50%. To regenerate the nozzle. Hole pipelines of compressed air are installed under it, and regeneration is carried out periodically during hours of minimal flow of wastewater. The primary bioreactor sump is combined in one container with the aerobic stabilizer 19 and is separated by a longitudinal partition 20. From the bioreactor sump, clarified water is fed through the tray 21 along with the recirculating activated sludge into the primary aeration tank 22, whose aeration zone equipped with porous filler containers 23 for fixing microorganisms. Containers are located above the aerators. The supply of a mixture of wastewater and recirculated activated sludge brings the aeration tank operating mode closer to the operating mode of the propellant reactor, which provides more efficient removal of organic and phosphorus compounds than the mixer reactor. Primary aeration tank 22 is a control tank, the level in it can be kept variable and is intended for complete biological treatment of wastewater from organic substances and uniform supply of liquid to subsequent structures. To maintain a constant level and flow rate in the secondary sump 26, the primary aeration tank is equipped with airlift 24 with a constant flow tank 25 by means of a spillway with a constant

level for pumping the sludge mixture from the primary aeration tank 22 to the secondary settling tank 26. which is equipped with 5 thin-layer modules 27 to intensify sedimentation. Recirculated activated sludge from the settling zone enters the recovery sludge regenerator 28. along the bottom of which there is a hole pipe 30. From the regenerator tray, excess active 0 sludge airlift 29 is pumped to an aerobic stabilizer 19, which also receives a part of the settling substances of the source water from the settling tank-bioreactor 17 and a mineralized film separating from the nozzle 5 of the settling tank-bioreactor during nozzle regeneration. Purified water is supplied through an adjustable gear spillway 21 to a secondary aeration tank 31 equipped with a fiber nozzle for fixing microorganisms. The nozzles are located above the aerators and operate in a constant regeneration mode. Soda from the secondary aeration tank is fed into a tertiary sump 32, equipped with thin-layer modules 5 made in the form of a lattice from a brush loading. Treated wastewater is discharged from the structures into a tray. Excess biomass by airlift 35 is fed into the aerobic stabilizer 19, from where stabilized 0 sediment enters the sludge pad 37. Secondary aeration tank 31 operates with an adjustable flow rate, which ensures the stability of the quality of purified water.

5 The introduction of the technology of deep biological treatment at the proposed installation allows for wastewater treatment to the following concentrations:

Weighted Substances 5 mg / L

BODfull 4 mg / l

Oil products

50% reduction

Ammonium Nitrogen 2 mg / L

5 Nitrates 10 mg / L

Phosphorus (by ROa)

50% reduction.

Claims (1)

SUMMARY OF THE INVENTION A plant for the deep biological treatment of wastewater and sludge treatment, comprising pumps with a pressure line, a receiving chamber, gratings, a sand trap with a drain channel and a measuring chamber. sand pads, primary sedimentation tank - ruffled bioreactor, primary aerotank with porous filler, secondary aerotank with ruffled loading from a mixture of lavsan and kapron, secondary and tertiary sedimentation tanks with thin layers modules, cleaned water discharge and sludge sites, characterized in that the installation is equipped with an aerobic stabilizer and a recirculating sludge recovery tray with airlift for pumping excess activated sludge into an aerobic stabilizer, along the bottom of which there is a hole pipe for bubbling, the pressure line of the pumps is equipped with a tank, flow meter and overflow discharge pipe with plug valve, the grill is installed in the channel at an angle of 60 ° to the horizontal and is made of metal rods of round diameter with the possibility of rotation Around the horizontal axis, mounted on the sides of the channel, the receiving chamber is equipped with a bypass channel with its grating located above the main channel, the sand trap is tangential and equipped with a Sand airlift located in the center of the sand trap, a mesh box for accumulating and flowing around sand and a water return pan from the mesh box to the receiving chamber, the outlet channel is divided into two channels, each of which is equipped with a gate, the primary bioreactor sump The aerobic stabilizer and the aerobic stabilizer are combined in one tank and separated by a continuous longitudinal partition having a gap in the lower tapering part for precipitation into the aerobic stabilizer, the primary aeration tank is equipped with an airlift with a constant flow tank for supplying a constant flow to the secondary sump, and the primary bioreactor sump is equipped with a gear spillway connected to the return sludge regenerator tray, the secondary sump is equipped with an adjustable gear spillway connected to a tertiary sump, ary clarifier is equipped airlift pumping biofilm into an aerobic stabilizer, and as a thin-layer modules it uses a grid of ruffs. J / 18 L NM /