CN102424443B - Microbubble generating and gas dissolving device for sewage treatment - Google Patents

Abstract

The invention relates to a microbubble generating and gas dissolving device for sewage treatment. The device comprises a horizontal gas dissolving tank, a bubble partition filler, a water inflow pipe, a water outflow pipe, a gas inflow pipe group, a gas release pipe and a pollutant discharge pipe, wherein the water inflow pipe is horizontally inserted or verticality inserted from the upper part or lower part of one end outside the horizontal gas dissolving tank body and is connected with a single or row-type water spray pipe horizontally arranged in the top space of the horizontal gas dissolving tank, and water spray nozzles are arranged on the lower half-periphery of the water spray pipe; the water outflow pipe is horizontally inserted or verticality inserted from the upper part or lower part of the other end outside the horizontal gas dissolving tank body and is connected with a single or row-type water collecting pipe horizontally arranged in the lower space at the bottom of the horizontal gas dissolving tank, and water outflow holes are formed on the lower half-periphery of the water collecting pipe; two groups of single or row-type gas release pipes are horizontally arranged in the upper space of the water collecting pipe, the gas release pipe groups are in parallel connection with a gas introduction pipe outside the horizontal gas dissolving tank body, and micro-scale gas release holes are formed on the periphery of the gas release pipes; the bubble partition filler is filled between the gas release pipe groups and the water spray pipe; and the structure has high flotation efficiency.

Description

A microbubble generating and dissolving device for sewage treatment

technical field

The invention relates to an air-dissolving device for sewage treatment, in particular to a micro-bubble generation and air-dissolving device for sewage treatment.

Background technique

At present, there is a technical bottleneck in the treatment process of polymer-containing sewage in oilfields. It is difficult to treat highly emulsified sewage by conventional treatment processes. As an enhanced water treatment process, air flotation has a better treatment effect, especially the dissolved Air flotation is widely used in oilfield sewage treatment. The important technical nodes of the dissolved air flotation process are the generation of bubbles and dissolved air. The generated microbubble particle size and dissolved gas saturation directly affect the actual treatment effect of the air flotation process. However, the usual way of generating and dissolving air bubbles is relatively extensive, and the size of the generated bubbles is relatively large, so that they cannot be completely dissolved into the dissolved air water to reach a saturated state.

Contents of the invention

The object of the present invention is to provide a microbubble generating and dissolving device for sewage treatment, which overcomes the above-mentioned defects in the prior art.

A micro-bubble generation and dissolved air sewage treatment device, comprising a horizontal dissolved air tank, coalescing packing, water inlet pipe, water outlet pipe, air inlet pipe group, air release pipe, sewage pipe, air release valve and safety valve, characterized in that the inlet The water pipe is inserted horizontally or vertically from the upper or lower part of one end of the horizontal air-dissolving tank to connect with a single or row-type water spray pipe horizontally arranged in the head space of the horizontal air-dissolving tank. Water spray holes with micron-sized holes in the half circumference; the water outlet pipe is inserted horizontally or vertically from the upper or lower part of the other end of the horizontal air-dissolving tank body and is horizontally installed in the space below the horizontal air-dissolving tank. Row-type water collection pipe connection, in the lower half of the water collection pipe, there are water outlet holes with micron-sized holes; in the upper space of the water collection pipe, there are two groups of single or row

Type air release pipe, the air release pipe group is connected in parallel with the incoming air pipe outside the horizontal air dissolving tank, there are micron-scale air release holes around the air release pipe, and coalescing packing is provided between the air release pipe group and the water spray pipe; There is a safety valve on the upper top of the horizontal dissolved air tank, and a drain valve on the lower bottom.

Compared with the prior art, the present invention has the following advantages:

The micro-bubble generation and air-dissolving device for sewage treatment proposed by the present invention can generate micron-sized bubbles and dissolve them into the dissolved air water efficiently to make them reach a saturated state, greatly improving the efficiency of dissolved air, and is the key to the air flotation effect. Ascension provides an important technical guarantee. The air-dissolving device adopts a horizontal air-dissolving tank configuration, so that the overall height of the air-dissolving device can meet the requirements of indoor installation, which is conducive to equipment operation and maintenance. Based on the above characteristics, the micro-bubble generation and dissolved air device for sewage treatment is especially suitable for occasions where the dissolved air treatment capacity is large, the dissolved air quality is high, and indoor installation and operation are required. The dissolved air effect is stable and has a great application prospect. .

Description of drawings

Fig. 1 - the facade structure diagram of the horizontal air-dissolving tank of the present invention.

In the figure A. Horizontal dissolved air tank, 1. Coalescing filler, 2. Water inlet pipe, 3. Water spray pipe, 4. Water outlet pipe, 5. Water collection pipe, 6. Air release pipe group, 7. Air release pipe, 8. Sewage pipe, 9. blowdown valve, 10. air release valve, 11. safety valve.

Detailed ways

In order to further disclose the technical solutions of the present invention, the following will be described in detail through examples in conjunction with the accompanying drawings:

A microbubble generating and dissolving device for sewage treatment, comprising a horizontal dissolving tank A, coalescing filler 1, water inlet pipe 2, water outlet pipe 4, air inlet pipe group 6, air release pipe 7, sewage pipe 8, discharge pipe The gas valve 10 and the safety valve 11 are characterized in that the water inlet pipe is inserted horizontally or vertically from the upper or lower part of one end of the horizontal gas dissolving tank body and is horizontally arranged in a single root or row in the head space of the horizontal gas dissolving tank. Type water spray pipe connection, in the lower half of the water spray pipe is provided with micron-sized water spray holes; the water outlet pipe is inserted horizontally or vertically from the upper or lower part of the other end of the horizontal dissolved air tank. A single or row-type water collecting pipe is connected in the lower space of the horizontal air-dissolving tank, and water outlet holes with micron-sized holes are provided on the lower half of the water collecting pipe; two groups of single or row-type The air release pipe, the air release pipe group is connected in parallel with the incoming air pipe outside the horizontal air dissolving tank, the air release holes with micron-sized holes are arranged around the air release pipe, and the coalescing packing is arranged between the air release pipe group and the water spray pipe; There is a safety valve on the upper top of the type dissolved air tank, and a drain valve on the lower bottom.

When the present invention is working, the pressurized poly-containing sewage comes in from the water inlet pipe 2 and sprays out from the water spray pipe, sprays on the coalescing filler, and is crushed into micron-sized water droplets, and the small water droplets are combined with the micron-sized water droplets released from the air release pipe. Under the action of pressure, the first-grade air bubbles are fused to form saturated dissolved air water. The dissolved air water finally enters the outlet pipe from the water outlet hole on the water collection pipe, flows out of the horizontal dissolved air tank A, and enters the air suspension in the next step of sewage treatment. device. During operation, if there is too much mud at the bottom of the horizontal air dissolving tank, it can be discharged from the drain valve 9, and the liquid level in the horizontal air dissolving tank can be controlled by deflation through the air release valve 10, so that the dynamic liquid level is controlled at the coalescing packing In the area between the bottom and the drain pipe, the sewage that reaches the state of high dissolved gas saturation after being treated by the microbubble generation and dissolved air device for sewage treatment of the present invention enters the air suspension sewage treatment device for advanced treatment, which can make the air suspension treatment The sewage meets the sewage reinjection standard.

Claims (1)

1. a microbubble takes place and molten gas waste disposal plant, comprise horizontal dissolving, coalescent pack, water inlet pipe, rising pipe, inlet pipe group, outgas pipe, blow-off pipe, purging valve and safety valve, it is characterized in that water inlet pipe injects or vertical the reeve with the single or formula of row water jet standpipe in level is located at horizontal dissolving crown portion space is connected from the top of the external end of horizontal dissolving or lower horizontal, is provided with the spout hole of micrometer grade hole at the lower half of water jet standpipe; Rising pipe is from the top or the bottom of the external the other end of horizontal dissolving, and level injects or vertical the reeve with single in level is located at space, horizontal dissolving bottom or the formula of row header is connected, and is provided with the posticum of micrometer grade hole at the lower half of header; Level in the header upper space is provided with two groups of single or row's formula outgas pipes, and the horizontal dissolving of outgas Guan Zuyu is external comes the tracheae parallel connection, and the outgas hole in that outgas Guan Guanzhou is provided with micrometer grade hole is provided with coalescent pack between outgas Guan Zuyu water jet standpipe; Be provided with safety valve at horizontal dissolving upper top, lower bottom part is provided with wash water valve.

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