SU1530573A1 - Column-type clarifier air tank - Google Patents

Abstract

The invention relates to devices for the biological treatment of wastewater and is intended for use in sewage treatment plants in a wide range of capacities. The purpose of the invention is to increase productivity and efficiency by increasing the total surface of the suspended layers of activated sludge. The aerotank comprises a housing 1 with vertical and transverse partitions 2 and 3, chambers 4-7 for aeration, degassing, recirculation, clarification, as well as pipelines 16 and 11 for supplying raw water and discharging purified water. The waste water through conduit 16 enters the aeration chamber 4, where it is mixed with activated sludge, aerated and through the windows 8 is directed into the degassing chamber 6. Next, the silt mix will enter recirculation and clarification chambers 5 and 7 and will be discharged from the device through pipelines 11. The invention allows increasing the capacity of the device, reducing energy consumption and the amount of air supplied to the aeration. 2 Il.

Description

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    i -ijci t the mixture enters the chambers 5 and 7 of recirculation and clarification and retraction; gfc from the device through pipelines II. The invention allows

increase the performance of the device, reduce energy consumption and the amount of air supplied to the aeration. 2 Il.

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The invention relates to devices for bio-logical purification of Hbix syd, namely, aeration tanks, is adopted:,; at the cleaning stations of the canal-) ii-f3dii iM I orodo and industrial enterprises;

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: g-: k izbreteii - povnenie-,:., -. v-; - - -T and the efficiency of the work;:. ,, by increasing the total of 1, I I ... 11 weighted layers of active. -T -i,

FIG. 1 shows the aeration tank, 1 (ijf; pxy, in Fig. 2 - section A-A

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 contains body 1, ver-, 1Kn) | dn | ..e 2 and paired 3 inclined n je channels, separating the aeration tank by i :. h:;, "eoations t, recirculation 5, de" II. 6 and clarifications 7. In the upper part of the - I- ii P :: town 1.

. i -zhi 8, equipped with shi, -: o; 7 lightening foams installed i .. 1 with transverse partition 3

- 14 zakreg lena upper | -c;: tick separating

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 :. At the ends of the paired .. l - -.NioK 3, slotted locks are formed. 4 G ,, The paired transverse barriers.;., camera 7 is lightened in iL. the height of the individual ruins h .. 1actizies through slotted holes, jh, i (, L

P - .d ne: Egorodki 3 in the middle of the rug ... laid pipe 11 for ot-}), d; , d4.11ts .; other water in a national bowl 1

To the lower part of the column aero tank (p. Oasgg.), The recirculation

 ), .- 4 aeration throughout the height. up to the tubular system V, j.ui i nwx of boxes 1, informing- ..1 I mg-th - upper and lower parts. 1 ... 1 | .. in part and in the volume of the chamber and in the inside of the tubular recirculation - r; - c (| s; 1 boxes are placed in pneumatics. -,: -, i3piiTopi.i 15, In the aeration chamber k in the upper part there is a pipeline 16 supplying the cleaned fluid as well as the excess sludge removal pipe 17.

Aerotenk works as follows.

Pipeline 1b receives the uncleaned waste liquid into chamber k of aeration, where it is mixed with active sludge under conditions of aeration by air supplied through aerators 15, and intensive recirculation through tubular boxes 14.

The oxygen-saturated air-oxygen mixture through the overflow windows 8 enters the degassing chamber 6, where the air bubbles are separated. From the chamber 6 of degassing of the silt, the CRMS in the form of a recirculation flow enters the recirculation zone, moving from top to bottom, each pass through the gaps 10, and then through the recirculation gaps 13 returns to the aeration chamber 4. Thus, due to the difference in the flow rates of 1/3-gigantic mixture in the zone of aeration and liquid in the zone of illumination PG: CH1-1, directional multiple recirculation is established between the zones of aeration and clarification.

In addition to the exchange between the zones of ventilation and clarification and saturation of the volume of the zone of precipitated oxygen dissolved in oxygen, the recirculation flow in the axial spaces between the surfaces of the paired partitions forms suspended (fluidized) layers of active sludge on both sides of the flow.

Removal and oxidation of contaminants occurs throughout the entire volume of the device occupied by the sludge, and clarification of the treated wastewater occurs simultaneously when it is filtered through the suspended layers of sludge. In this way, non-direct distillation of the O4-Shg process, dp of sludge separation from purified water, and sedimentation is excluded.

The purified water is collected over the top of the engineered layers of the car. 15

nominal pipelines 11 and is discharged into the collection bowl 12 and further removed from the structure. Device team -1ashi I; provides a uniform selection of purified water from each Rus. Excess sludge is removed through conduit 17.

The equipment in the proposed device is a zone for clarification of the system with fused ne; The country allows, while keeping the existing linear dimensions of the structure, to increase its productivity by 2 times due to a pro-rational increase in the total surface of the suspended layers of activated sludge, and also to improve the efficiency and quality of its work. When / (Comparison of Q 2 times the cross section of the aero-clarifier of the column tipi (changes in height, its pro- ductivity increases by a factor of k.

Improving the efficiency and quality of device robots is achieved by reducing the hydraulic load on the surface of suspended layers of activated sludge, as well as increasing the use of kinetic: Yepr: l recirculation flows, about

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breaking suspended layers of activated sludge from two sides of the flow,

Claims (1)

The invention allows to increase the productivity of the device, to reduce energy consumption and the amount of air supplied to the aeration. Invention Formula The aerotank clarifier of the column type, comprising a housing divided by vertical and inclined partitions into aeration and clarification chambers, pneumatic aerators, feed and discharge units for the treated liquid and excess sludge, activated sludge circulation system, characterized in that increasing productivity and operating efficiency by increasing the total surface of suspended layers of activated sludge, it is equipped with paired partitions located along the entire height in the clarification chamber (and one with other goy dihedral angles, the sloping baffle attached to the vertical at an angle to form a gap with paired baffles clearances. t one 1