KR20100007483A - Water treatment method and equipment for pollution water - Google Patents

Abstract

PURPOSE: A water treatment apparatus and a water treatment method using the same are provided to reduce the consumption energy and manpower expanses by removing contaminated materials rapidly contained in raw water. CONSTITUTION: A water treatment method comprises the following steps: supplying an injector(3) injecting a coagulant to raw water to remove contaminated materials contained in raw water; supplying a floc forming bath(5) and a line mixer(4) to flocculate the raw water by mixing the raw water and the coagulant; supplying a hydro cyclone(6) separating the floc formed on the raw water; supplying a purification filter(7) removing corpuscle contained the purified water; supplying an air compressor(8) isolating corpuscle attached to the surface of the filter; supplying a purified water outlet pipe(9) discharging the purified water; and supplying a control panel(10) controlling each element.

Description

Water Treatment Method and Equipment for Pollution Water

Environmental Water Treatment

Background art of the present invention is to infuse flocculant injected to treat contaminated raw water containing minerals into raw water by injector and line mix and increase the size of mixed flocs by flocculation tank The purified floc flows into the hydrocyclone and is separated by the centrifugal force of the cyclone, and the purified water is filtered by a hydrostatic filter to purify the water more clearly. More specifically, the water flow pressure when supplying the flocculant to the raw water. And the line mixer and floc forming tank to grow the mixed floc with the injector which is rapidly diffused into the injector, and the hydrocyclone to rapidly separate the formed floc, the filtration to filter out the fine solids, and It is a combination of backwashing technology that desorbs the solids attached to the filter by the compressed air.

In the meantime, the raw water is transferred to the coagulation tank, the coagulant is added to the coagulation tank, stirred by the stirrer, and when a floc is formed, the floc-containing water containing the floc is transferred to the sedimentation basin, whereby the solids (frog) are precipitated. After extraction, it is taken out and treated, and the symbolic water of the sedimentation tank is transferred to a filter, filtered, and then discharged or utilized.

 Such a method requires a feed pump to inject coagulant, agitators and agitation tanks to mix the coagulant with raw water, and a driving unit or a large area is required to settle flocs. In addition, a sludge collector and a drawer were required to take out the precipitated flocs. In addition, the conventional facilities are installed in series (coagulation tank ⇒ sedimentation tank ⇒ filtration tank) requires a lot of area and power and took a long time to operate.

The problem to be solved by the present invention is to improve the existing methods applied to the flocculant input, floc formation, sedimentation and filtration as described above to combine the respective facilities installed in a small area and significantly reduce the time required The present invention provides a method and apparatus for water treatment that can increase efficiency while significantly reducing energy consumption.

The present invention provides an injector in injecting a coagulant into the raw water to remove contaminants contained in the raw water, a line mix is provided to mix and flocculate the coagulant injected into the raw water, and the floc formed in the raw water can be quickly The hydrocyclone is formed to separate and the filter is formed to remove particulates contained in the supernatant separated by the hydrocyclone. In addition, a backwashing process is provided for desorbing particulates, which are contaminants attached to the surface of the filter, by compressed air so that the filter can be repeatedly used.

According to the present invention, by quickly removing the contaminants contained in the raw water by the above-mentioned solution, the facility can be treated more simply and quickly than the existing water treatment method, so that the contaminated water is treated in a smaller area and shorter time than the existing water treatment method. There is an effect that can significantly reduce the energy and personnel required.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of an apparatus for treating contaminated water according to the method of the present invention.

Figure 2 is a detailed view of the injector (3) is characterized in that the inlet aperture is gradually reduced to the nozzle neck as shown in the figure, and then gradually expands after passing through the nozzle neck, so that the speed is instantaneously when the fluid passes through the nozzle neck. The nozzle neck portion through which the fluid passes has negative pressure.

The negative pressure generated at this time forms a force capable of sucking another fluid through the suction port of another fluid formed in the nozzle neck.

Referring to the present invention by FIG. 1, when the contaminated water to be treated first is collected in the sump tank 1, the raw water is injected through the raw water supply pipe 2-1 by the raw water supply pump 2. It is supplied to (3). At this time, the supply pressure of the raw water is maintained at a pressure of about 5㎏ / ㎠ to obtain the effect of the injector.

When the raw water passes through the nozzle neck of the injector in the above state, a negative pressure is instantaneously generated in the nozzle neck, and the coagulant is sucked into the raw water through the coagulant inlet 3-1 by the above negative pressure. It is characterized by an extended mixing into the raw water instantaneously towards the outlet of this expanding injector.

As described above, the flocculant mixed in the raw water is more finely mixed while passing through the line mix 4. As described above, the flocculant mixed with the raw water forms flocs using the contaminants contained in the raw water as nuclei. The floc forming tank 5 tank is provided after the line mix yarn 4. The floc forming tank 5 has a diameter and height that is several times larger than the diameter of the line mix yarns (5-10 times) and exposed to a large container of raw water mixed with the flocculant passing through the line mix yarns (4). Flock in the enemy grows more. The raw water having undergone the above process enters the hydrocyclone through the inlet of the hydrocyclone 6 together with the formed floc.

The floc entering the hydrocyclone is pivoted in the tangential direction of the cylinder, which has a characteristic of giving the floc centrifugal force to separate the floc formed in the raw water. The flocs separated by the above action accumulate under the cyclone and the integrated flocs exit the device through the solids outlet 6-1.

The flocs are discharged out of the cyclone intermittently by the solids outlet control valve 6-3. Meanwhile, the purified water separated by the rotational movement of the cyclone exits out of the cyclone through the purified water outlet 6-2 formed at the upper center of the cyclone, and the purified water filter 7 is formed near the purified water outlet 6-2. The fine particles that are not separated by the cyclone by the purified water filter 7 is to be separated. Therefore, the fine particles are attached to the surface of the water filter, and after a certain time, the fine particles attached to the surface of the filter are to be detached or the filter is replaced. Therefore, in the present invention, the fine particles attached to the filter is configured to be detached by compressed air.

Compressed air is generated by the air compressor (8), is supplied to the inside of the purified water filter by the compressed air control valve (8-2) through the compressed air supply pipe (8-1) to remove the particles attached to the outside of the filter Done. At this time, the purified water outlet pipe 9 is closed by the purified water control valve 9-1. In addition, the raw water supply pump is also stopped at the same time and the solid matter outlet control valve (6-3) is characterized in that the configuration to maximize the desorption effect.

As described above, the present invention requires a large amount of space by installing the existing flocculation tank, sedimentation tank, filtration tank, etc. by treating the contaminated water by combining the injector, the line mix yarn, the floc forming tank, and the hydrocyclone and the filtration filter. There is an effect that can be treated as a simple facility without complicated facilities.

As described above, the method of the present invention provides a method for a water treatment device having a simple facility, low energy, and good treatment efficiency, and relates to manufacturing the device according to the provided method.

The present invention purifies muddy water generated during large-scale civil engineering works such as pre-treatment facilities, tunnels, etc. in pre-treatment facilities such as simple water supply facilities, wastewater treatment facilities in hospitals, wastewater treatment in hospitals where waterworks are not spread. It is available as facility to say.

1 is a schematic diagram of an apparatus for treating wastewater according to the method of the present invention.

    <Description of the symbols for the main parts of the drawings>

1.-raw water tank

2.-Raw water supply pump

2-1. Raw water supply piping

3.-Injector

3-1. -Flocculant inlet

4.-LINE MIX

5.-floc forming tank

6.-Hydro Cyclone

6-1. -Solids outlet

6-2. -Water outlet

6-3. Solid outlet control valve

7.-Water filter

8.-Air compressor

8-1. -Compressed air supply pipe

8-2. -Compressed air control valve

9.-purified water outlet piping

9-1. -Water control valve

10.-Control panel

Figure 2 is a detailed view of the injector

Claims (1)

An injector is provided in injecting flocculant into the raw water to remove contaminants contained in the raw water, A step of providing a line mix yarn and a floc forming tank to mix and flocculate the flocculant injected into the raw water by the above step, Hydrocyclone is provided to rapidly separate the flocs formed in the raw water, A filter provided to remove particulates contained in purified water separated by hydrocyclones, And a compressed air supply device for desorbing the particles attached to the surface of the wheel after the step.

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