KR960001399B1 - Water treatment apparatus - Google Patents

Abstract

Water containing solid residue and chloride is fed from a water catchment tank(1) to a mixing pipe(8) having chemicals inlet, a pH meter(3), an ultrasonic generator(4), a neutralizing agent inlet(6), a partition(5) and a flow rate sensor(7) by a pump(9). The water is stirred and coagulated by an impeller of the pump(9) in a coagulating pipe(10). The treated water is filtrated in filtration tanks(11, 12) having filters(13, 14), and separated.

Description

Water treatment device

1 is a schematic diagram of the present invention.

2 is a schematic view of sludge concentration and compression means using compressed air in the present invention.

3 is an enlarged sectional view of portion A of FIG.

* Explanation of symbols for main parts of the drawings

1: water tank 2: chemical administration

3: PH meter 4: Ultrasonic generator

5: bulkhead (anchor) 6: neutralizing agent inlet

7: flow rate sensor 8: mixed pipe

9: pump 10: cohesive pipe

11, 12: filtration tank 13, 14: filter

16 transfer pipe 17 acid neutralization solution tank

18: Alkaline neutralization solution tank 19: Chemical tank

21: filtration tank 22: air compressor

23: sludge outlet 24: drain

25 filter 10 bulkhead (anchor)

2 ', 16', 23 '24': valve

The present invention relates to a water treatment method for purifying or purifying various water, sewage, and wastewater.

Conventional methods for purifying water, purifying sewage, and wastewater include removing solid suspended solids flowing with water and administering various chemicals during various treatment tanks such as precipitation, filtration, contact, reaction, and aeration. Water treatment by physico-chemical treatment method of neutralization, flocculation, etc., followed by precipitation and filtration and dehydration, or biological treatment that decomposes or removes organic or fluid heavy metals using bioreaction by microorganisms as part of advanced treatment. Doing.

In the present invention, as described below, the collected fluid is administered with chemicals (neutralizing agent, flocculant) in the fluid transported on the pipeline, and homogeneously mixed with ultrasonic waves and anchors, and then the coagulation stirring uses the rotational force of the transfer pump. It separates the mixing stirring of agitation drug and the agitation for the flocculator, filters the flocculating sludge through the high speed flocculation process, and separates the purified water and the sludge through the process of dehydration and drying using air pressure. Therefore, the present invention can be said to belong to the method of physico-chemical water treatment. In the physico-chemical water treatment method, flocculant is administered as a means of removing suspended solids or suspended solids contained in a target fluid (water, waste water, sewage, etc.). Condensation is easy to settle and flocculate, making it easy to remove during water treatment. This is called chemical unit process.

Coagulants administered to metabolic fluids destabilize the colloidal phase in a stable state and cause repulsion and attraction between the particles to cause them to clump together. At this time, when the stirring is applied, the particle movement becomes active, and the unstable particles collide and react with each other to be agglomerated and separated from water and aggregate. Based on this coagulation principle, the conventional chemical treatment process is to administer a flocculant to the target fluid introduced into the stirring tank, and then, by means of the impeller, first high-speed stirring and mixing to form colloidal fine particles as a floc, and the second slow stirring in the sedimentation tank. The floc is coagulated to facilitate sedimentation to allow gravity to sediment, while the supernatant is discharged or filtered through a filter bed. Although such a chemical treatment process is a very basic process, the prior art having a method and apparatus for coagulating suspended solids and dissolved debris solids by administering a flocculant (drug) and sedimentation filtration is described as follows.

That is, in Patent Publication No. 91-3003, "Wastewater Treatment Method", the number of wastewater adjusted to PH7-8 in the storage tank is transferred to the aeration tank, and then a flocculant is introduced in the aeration tank. 3005 "Industrial Wastewater Treatment Method and Apparatus" has a storage process for collecting and sedimenting wastewater, administering an oxidizing agent in a storage tank, and a flocculant in a flocculation tank after a vacuum reaction step of stirring and reacting it in a vacuum reaction tank. And then subject the filtration process to separate sludge and treated water in the flotation tank. Patent Publication No. 91-4127, "Method for Treating High Concentration Organic Wastewater," treats organic wastewater containing high concentrations of nitrogen and BOD sources. It can be seen that the water treatment through the storage tank, flocculation tank, disinfection tank, separation tank, aeration tank, sedimentation tank.

The above-mentioned conventional chemical treatment process and the general technical problems of the preceding patent can be said as follows.

1) Problems of Stirring Strength

The relationship between the stirring strength, the cohesive efficiency and the speed is known to have a relationship such as G = (P / uV) ^1/2 (G: stirring strength, P: power, u: viscosity coefficient, V: volume). Therefore, increasing the stirring strength improves the coagulation efficiency and the coagulation speed. However, in the conventional method, the stirring strength for mixing the chemicals and the coagulation stirring for the flocculation are simultaneously performed. Therefore, the stirring strength cannot be increased above the break point of the preformed flocs. Falls.

2) Problems of transfer after floc formation

After the formation of the flocculation (coagulation) by coagulation and pumping by the pump in order to transfer to the filtration point or filtration tank, because the floc is destroyed and finer, the settling delay of the sedimentation tank and filtration decreases the filtration efficiency.

3) problems of precipitation

In the case of separating solid-liquid by gravity sedimentation, it takes a long time and requires large area and facility.

4) The problem of filtration

In the conventional gravity filter bed, the filter bed and the solid to be separated act in a direction perpendicular to the filter medium when the solid-liquid separation separates the filtration pores of the filter or the filtering means, which requires washing and decreases the filtration efficiency.

5) large facilities

It is necessary to install various large tanks, which makes it difficult to secure the installation area and cost a lot of facilities due to the large facilities.

The present invention devised in view of the problems of the conventional water treatment was developed under the following proposition.

1) Increase the agitation strength for coagulation efficiency.

2) Minimize the destruction of flocculated flocs.

3) Economically treat the separated sludge.

4) It can be installed in a multi-storey building like a building, so that a large amount of processing can be installed in a small area.

5) The present invention can be treated to a certain amount of water only.

Therefore, the features of the water treatment method of the present invention only

1) In order to increase the agitation strength, separate the mixing agglomeration and the coagulation agitation to perform the coagulation agitation after mixing the administration drugs.

2) By using the pump for the transfer of the fluid to be treated as a coagulation stirrer, high speed agitation and minimizing the destruction after the formation of the floc.

3) Minimize clogging of the filter due to sludge in the fluid to be separated during the filtration where the fluid to be separated and the filter medium are installed in the horizontal direction.

4) Use air pressure for dewatering the separated sludge.

As a means for satisfying such conditions, the present invention allows the mixing and coagulation process such as chemical administration, reaction, and stirring during the process of transferring the object fluid collected in the sump tank to the pipe so that the space occupied by the facility is as usual. It eliminates the need for a large area and installs a sensor to measure the flow velocity in the pipe and a PH meter to measure the acidity to measure the correct flow rate (flow rate) and the correct PH index, based on which the appropriate amount of chemicals (neutralizer, flocculant) ), The bulkhead (anchor) and ultrasonic generator are installed in the pipe to vibrate and mix the fluid to maintain uniform density and concentration to measure accurate PH index and pump the mixed fluid. When conveyed by the impeller of the target fluid is agglomerated stirring, various fires contained in the target fluid in a short time Pure water is to be agglomerated as described in detail by the accompanying drawings as follows.

In the water treatment method for purifying or purifying water, the object fluid collected in the sump (1) is supplied with chemicals (2), PH meter (3), ultrasonic generator (4), partition (anchor) (5), neutralizer inlet (6) and the mixing pipe (8) equipped with a flow rate sensor (7), the inlet and agitated mixing, and then the high-speed coagulation stirring by the impeller of the pump (9) for transporting it and then extruded to the coagulation pipe (10) line In the filtration tanks 11 and 12 in which the filters 13 and 14 are embedded, the purified water and the sludge are separated and the sludge is discharged through dehydration and concentration means.

The present invention will be described in more detail and the effects and effects thereof will be described as follows.

The object fluid collected in the sump 1 is removed before collecting the solid debris (sand, wood chips, waste vinyl, waste plastic, paper, etc.) having relatively large particles in the sump 1. Therefore, the object fluid to be collected in the sump 1 includes only solid fine debris or colloidal or ionic melt dissolved in water. Means for raising the object fluid of the sump (1) to the mixing pipe (8) is introduced into the mixing pipe (8) from the sump (1) by a pump (9) installed at the rear end of the mixing pipe (8). In other words, the object fluid introduced into the mixing pipe 8 maintains the turbulent state in which the flow state is turbulent but does not have a rapid flow state until it passes the pump 9. However, while passing through the pump (9) is a sudden cohesive stirring is made by the impeller of the pump (9).

The flow rate (flow rate) of the target fluid introduced into the mixing pipe (8) is measured by the flow rate sensor (7) and the correct acidity is measured by the PH meter (3). In addition, the ultrasonic generator 4 and the partition wall (anchor) 5 mounted in the mixing pipe 8 apply vibration (ultrasonic wave) to the target fluid to finely mix the particles of the target fluid and mix them at the same time to flow into the mixing pipe. By maintaining a constant concentration and uniform density at the same time, it is possible to measure the accurate PH and at the same time, to make the molecular structure of the target fluid unstable, and to administer the chemical (coagulant, fungicide) (2) and the neutralizing agent ( 6) Induce sufficient binding with chemicals and neutralizing agent from

In order to stabilize the flow velocity of the fluid in the mixing pipe 8 and to increase the vibration (ultrasound) efficiency generated from the ultrasonic generator 4, the partition walls 5 may be installed before and after the ultrasonic generator 4. A proper amount of neutralizer is administered by controlling the opening and closing amount of each valve of the neutralizer tank composed of the acid neutralizing solution tank 17 and the alkali neutralizing solution tank 18 together with the flow rate (flow rate) index measured by the mixing pipe 8. To be. The chemical injection opening 2 provided in the mixing pipe 8 is connected to a chemical tank 19 having a valve 2 '. A disinfecting chemical such as chlorine may be used to disinfect the chemical charged into the chemical tank 19. When charged and requires flocculation, flocculant is charged. The opening / closing amount of the valve 2 ′ installed in the chemical injection opening 2 is controlled by the flow rate sensor 7 so that an appropriate amount of chemical is introduced. It can measure by the rotation speed of the flow cloud pump 9 of the target fluid which passes through the mixing pipe 8. However, since the rotation speed of the pump changes according to the change of the head and the change of voltage, it is difficult to accurately measure the changing flow rate. Therefore, the flow rate sensor 7 in the mixing pipe 8 was mounted so that the correct flow rate (flow rate) was measured.

Accurately measured flow rate and accurate PH measurement contribute to the administration of the appropriate amount of drug, eliminating waste caused by over-administration of drugs (neutralizers, fungicides, flocculants, etc.) and other sources of pollution. This will prevent the rising factor of. In addition, it is possible to solve the problem of unfinished water treatment caused by the lack of drug administration. In this way, the target fluid introduced into the mixing pipe 8 is chopped by ultrasonic waves, and the mixed fluid having a molecular structure that can be easily combined in the colloidal or ionic state by the injected medicine is a pump installed at the rear end of the mixing pipe 8. It is sharply rotated and mixed by the impeller. In this way, the mixed fluid, which is stirred and mixed by the impeller of the pump 9, passes through the pipe No. 10 having a certain length, that is, the coagulation line, which is a time for the flocks formed in the mixed fluid to condense and coarsen. To give. The mixed fluid passing through the coagulation pipeline (10) is agglomerated by the coagulant administered in the mixing pipe (8), the dissolved matter or suspended solids contained in the target fluid agglomerates with each other and aggregates into a gel-like mass and is separated from water. In addition, if the target fluid is acidic wastewater, it is neutralized by the alkaline neutralizer administered. If the target fluid is alkaline wastewater, the mixed fluid is neutralized by the acidic neutralizer administered. As such, the agglomeration pipeline for neutralizing the mixed fluid and separating the water and the agglomerate from each other may provide a partition 10 ′ on the inner wall of the agglomeration pipe to promote the reaction. The fluid that has passed through the coagulation pipe 10 is dissolved in the object fluid by the coagulant to agglomerate in a gel-like shape and separated from water.

When the filter 13 is introduced into the first filtration tank 11 having the built-in water, the water is purified through the filter 13 and the aggregates (sludge) are collected by gravity settling down the filter and the sludge pipe line below the filter ( The second filtration tank 12 may be installed at the rear of the first filtration tank 11 by dehydrating and condensing through the dehydration and condensation means through 16). When the filters 13 and 14 charged in the first filtration tank 11 and the second filtration tank 12 are installed vertically, the filters 13 and 14 are installed so as to be parallel to the advancing direction of the substance to be separated (agglomerate + water). The clogging phenomenon of the filters 13 and 14 due to the aggregates (sludge) falling by gravity can be minimized. That is, the primary filtration tank 11 for sludge filtration has a plurality of cylindrical filters 13 vertically installed therein and may include reinforcing means such as a stainless steel tube inside and outside the filter 13 to support the filter 13. Can be. The purified water filtered by the first filtration tank 13 may be purified again via the second filtration tank 14 as necessary.

Below the first filtration tank 11, a sludge feed pipe 16 other than the purified water transfer passage 15 is installed to transfer the sludge to dewatering and concentrating means using compressed air. Referring to the structure and operation method of the dehydration and concentration means using the compressed air in detail as follows.

When the sludge containing water flows into the filtration tank 21 through the sludge transfer pipe 16 connected from the first filtration tank 11 and the filtration tank 21 becomes full, the valve 16 of the sludge transfer pipe 16 is filled. ') Is closed and the valve 22' of the air compressor 22 is opened to allow the compressed air to flow into the filtration tank 21. At this time, the valve 23 'of the sludge outlet 23 is closed and the valve 24' of the drain 24 is open. The compressed air introduced into the compression tank 21 compresses the sludge to discharge the water containing the sludge to the drain port 24 through the filter 25, and after the drainage is completed, the valve 24 of the drain port 24 is closed. By closing and opening the valve 23 ′ of the sludge outlet 23, the dewatered sludge in the filtration tank 21 is discharged through the sludge outlet 23. Thereafter, the valve 23 'of the sludge outlet 23 and the valve 22' of the air compressor 22 are closed, and the valve 16 'on the sludge conveying pipe 16 is opened to the filtration tank 21. The sludge will be introduced again. This operation is automatically repeated to separate the sludge and water filtered in the first filtration tank (11).

The water treatment method through such a process can obtain the reaction (agglomeration, neutralization, sterilization) effect of the drug in a short time because the drug is administered while the target fluid by microscopic, homogenizing. In addition, as a device for mixing, a separate means is not required, but agglomeration and stirring by a pump that transfers the fluid, so that the stirring strength is very fast, and the strong stirring strength has a floc in a short time. That is, in the mixing pipe, the mixing is first performed by the ultrasonic wave, and then the stirring is performed by the impeller of the pump, and the crack is not generated even at a high speed stirring. The present invention is carried out on a single pipeline after collection and before it is introduced into the filtration tank, but each treatment process is clear and the whole, continuous and high speed water treatment can be performed. In addition, it is possible to easily install in a small area because it does not need a large area of facilities such as settling, sedimentation tank, filtration tank by mixing and sedimentation on the pipeline, and large-capacity water treatment is possible when installing in multiple layers like a building. In addition, the invention can be manufactured small enough to be mounted on a vehicle to provide a water treatment device that is easy to move.

Claims (6)

In the water treatment method for purifying or purifying water, the target fluid collected in the sump (1) is supplied with a chemical inlet (2), a PH meter (3), an ultrasonic generator (4), a neutralizer inlet (6), and a partition (anchor) ( 5) After the mixing flow into the mixing pipe (8) having the flow rate sensor (7) and then moved to the cohesive pipe (10) having a certain length by the pump (9) and then the filter (13), (14) is installed The first and second filtration tanks (11), (12), the aggregate (sludge) and purified water is separated by filtration and the aggregate is discharged through the dehydration and concentration means characterized in that the water treatment method. The water treatment method according to claim 1, wherein the mixing pipe (8) and the coagulation pipe (10) each have several partitions (anchors). The water treatment method according to claim 1, wherein the filters (13) and (14) are cylindrical and vertically erected, and are horizontal to the gravity drop sediment. The water treatment method according to claim 1, wherein the transfer pump (9) is used as a stirrer. The water treatment method according to claim 1, wherein air pressure is used for dewatering and concentrating the separated sludge. The water treatment method according to claim 1, wherein the filtration is performed simultaneously with the aggregation, and does not require an auxiliary means such as precipitation.