KR101034081B1 - Cleansing equipment of wastewater - Google Patents

Abstract

PURPOSE: A sewage and wastewater treatment system is provided to effectively purify wastewater by performing reaction, coagulation, precipitation, and oxidation processes inside one complex tank at the same time. CONSTITUTION: A sewage and wastewater treatment system comprises the following: a pump(110) pumping wastewater inside a wastewater storage tank(T); an in-line mixer(120) stirring the pumped wastewater; a first service tank(130) storing the stirred wastewater; an electro-electro-flocculator(140) electrolyzing the wastewater inside the first service tank; a complex purifier(150) purifying the electrolyzed wastewater by coagulating and precipitating; filters(160) filtering the purified wastewater; a second service tank(170) storing the filtered wastewater; a membrane(180) purifying the wastewater inside the second service tank; and a third service tank(190) storing the purified water.

Description

Cleansing equipment of wastewater

The present invention relates to a wastewater treatment plant, and more particularly, to a wastewater treatment plant capable of efficiently purifying wastewater by reaction, flocculation, precipitation, and oxidation occurring in one water tank (composite tank) at the same time.

Sewage treatment plans to continuously install sewage treatment plants in urban areas where populations are concentrated, but to install small-scale sewage purification facilities in areas where it is difficult to collect living sewage effectively, such as rural areas. To be processed.

Currently, 90% of the total land is located in areas other than sewage treatment areas where no sewage treatment plants are installed, and 37% of the population live in this area. To this end, it is urgent to develop technology for high efficiency small scale sewage purification facilities.

Unlike large-scale sewage treatment plants, small sewage purification facilities are installed near the source of wastewater, so it is possible to reduce the problems caused by excessive conduit construction cost due to sewage collection, which is one of the most serious problems in sewage treatment, and the problems caused by poor construction or aging. In addition, it is possible to reduce the enormous maintenance costs and to perform the so-called on-site treatment at the site of occurrence, thereby preventing contamination problems caused by leakage of sewage before reaching the treatment plant. In other words, small-scale sewage treatment facilities are advantageous in terms of overall economics, including the cost of disposal, compared to large-scale treatment facilities such as sewage treatment plants, and are much more competitive in terms of efficiency in removing pollutants since they can treat all generated pollutants without leakage.

In addition, the regulations stipulate that the discharge water quality standards for small-scale sewage purification facilities will be treated below 20 mg / l for both BOD and SS. This is a strict regulation considering that sewage treatment facilities regulate BOD and SS at 20 mg / l, except for special measures area and Jamsil submerged area. Of course, the sewage terminal treatment facility regulates nitrogen (N) and phosphorus (P) concentrations of 60 mg / l and 8 mg / l, respectively. Considering the fact that it is discharged to a large scale, small sewage purification facilities are installed and operated at a much lower cost than sewage treatment facilities, and are required to have almost equal discharge water quality standards. Especially, considering that the discharged water quality standards of sewage terminal treatment facilities and agricultural complex wastewater treatment facilities are 30 mg / l for BOD and SS, the discharged water quality standards of small sewage purification facilities are quite strict.

As such, small-scale sewage purification facilities can be positioned as highly economical treatment facilities in areas where sewage causes are scattered, such as rural areas, and should be so when considering the quality of discharged water as indicated in current laws and regulations.

However, the actual small sewage purification facilities are designed and constructed by small companies with poor technical or financial power, and their operation is rarely managed by professional personnel.

In addition, after construction, after-care is rarely performed through monitoring. In particular, small sewage purification facilities are often sources of relatively high concentrations or loads of organic substances and nutrients, such as restaurants and lodgings where treatment targets are scattered individually, and are close to the source and leaked or unknown like wide area sewers. Since there is almost no inflow of water, the concentration of pollutants in the influent is much higher than that of the sewage treatment plant.

In addition, it is easy to maintain constant treatment efficiency because it is exposed to temperature change, which is one of important environmental factors affecting treatment efficiency in biological treatment, due to the large fluctuation of daily, monthly or seasonal changes in quantity and quality of influent. not.

The present invention is to solve the above problems, by using the in-line mixer to agitate the waste water, using the electro-aggregator to cause the oxidation and reduction reaction of the waste water, floating floating in one tank (composite tank) to remove and sludge Its purpose is to provide a wastewater treatment facility that can treat small-scale industrial wastewater and washing wastewater immediately and efficiently in a contaminated place, by compactly constructing the entire structure so that the wastewater can be more efficiently purified by sedimentation.

In order to achieve the above object, a wastewater treatment facility of the present invention includes a pump for pumping wastewater stored in a wastewater storage tank; An in-line mixer for agitating the waste water supplied from the pump; A first service tank for storing the waste water stirred by the in-line mixer; An electroaggregator for electrolyzing the waste water stored in the first service tank; A complex purification device for receiving the electrolyzed wastewater by the electrocoagulator and coagulating and sedimenting the purified water; A plurality of filters for filtering the waste water purified by the complex purification device; A second service tank storing waste water that has passed through the filter; A membrane for final purification of the waste water stored in the second service tank; And a third service tank for storing water passing through the membrane.

The inline mixer may include a circular housing in which an inner space is formed; A plurality of first rotating fans rotatably installed in the space part of the circular housing in a forward direction; A second rotary fan positioned between the first rotary fans and rotatably installed in a reverse direction; And a cap covering both ends of the circular housing, wherein the first rotating fan and the second rotating fan have a rotating groove inserted into the rotating groove and the rotating groove at a center thereof, and the rotating protrusion is rotated. The first rotary fan and the second rotary fan can be rotated by being inserted into the groove.

The agglomerator is disposed between the plurality of positive electrode plates and the positive electrode plate in the housing, and electrolyzes the waste water passing through the housing by a power applied to the positive electrode plate and the negative electrode plate. .

The complex purification device includes a complex tank having a space added therein; A wastewater inlet pipe installed in the complex tank so as to be connected to the electrocoagulator; A float removal pipe installed at the upper center of the complex tank to guide the waste water supplied from the waste water inlet pipe to the lower portion of the complex tank and to remove the float contained in the waste water; An inclined disc downwardly formed on an outer circumferential surface of the float removing tube and having a plurality of wastewater through-holes formed in an adjacent portion of the float removing tube; A wastewater suction pipe fixedly installed on an inner circumferential surface of the complex tank so as to settle the aggregate while passing through the inclined disc and suck the wastewater that has passed through the wastewater through hole; A float suction pipe installed in the complex tank to suck the float floating on the upper portion of the float removing pipe; And a sediment discharge part for discharging the sediment through the hopper below the complex bath.

The complex jaw is formed in the middle of the support jaw for supporting the waste water suction pipe.

As described above, in the present invention, the waste water is agitated using an inline mixer, the oxidation and reduction reaction of the waste water is carried out using an electric flocculator, the suspended matter is floated and removed in one complex tank, and the sludge is precipitated. The entire composition is compactly constructed to clean more efficiently, so that small-scale industrial wastewater and washing wastewater can be treated promptly and efficiently at the place where pollution occurs, and it can be operated easily by anyone, and has a great advantage in protecting the environment. .

1 is a schematic diagram showing a waste water treatment facility according to the present invention
Figure 2 is a perspective view of the inline mixer of the present invention
3 is a longitudinal sectional view showing an inline mixer of the present invention.
4 is a plan view showing a rotating fan of the inline mixer of the present invention;
5 is a side view showing a rotating fan of the inline mixer of the present invention.
Figure 6 is an exploded perspective view showing an electric flocculator according to the present invention
Figure 7 is a longitudinal cross-sectional view showing an electric flocculator according to the present invention
8 is a plan view showing an electric flocculator according to the present invention.
9 is a perspective view showing a complex purification device according to the present invention
Figure 10 is a longitudinal cross-sectional view showing the interior of the composite purification apparatus according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the wastewater treatment facility according to the present invention.

1 is a schematic diagram showing a waste water treatment facility according to the present invention, Figure 2 is a perspective view showing an inline mixer of the present invention, Figure 3 is a longitudinal sectional view showing an inline mixer of the present invention, Figure 4 is a rotating fan of the inline mixer of the present invention 5 is a side view showing a rotating fan of the inline mixer of the present invention, Figure 6 is an exploded perspective view showing an electric flocculator according to the present invention, Figure 7 is a longitudinal cross-sectional view showing an electric flocculator according to the present invention, Figure 8 is 9 is a perspective view showing a complex purification device according to the present invention, and FIG. 10 is a longitudinal sectional view showing the interior of the complex purification device according to the present invention.

As shown in the figure, the wastewater treatment facility 100 according to the present invention includes a pump 110 for pumping the wastewater stored in the wastewater storage tank T; An in-line mixer 120 for stirring the waste water supplied from the pump 110; A first service tank (130) for storing the waste water stirred by the in-line mixer (120); An electric agglomerator (140) for electrolyzing the waste water stored in the first service tank (130); A complex purifier (150) for receiving the electrolyzed wastewater by the electrocoagulator (140) to coagulate and settle and to purify it; A plurality of filters 160 for filtering the waste water purified by the complex purification device 150; A second service tank 170 for storing the waste water which has passed through the filter 160; A membrane 180 for purifying the waste water stored in the second service tank 170 again; And a third service tank 190 for storing purified water that has passed through the membrane 180.

Referring to the configuration of the wastewater treatment plant 100 according to the present invention in more detail, the wastewater stored in the wastewater storage tank (T) through the wastewater line (L) by the pump 110, the in-line mixer 120 Will go through. Here, the waste water line L means a known pipe through which waste water flows. The waste water exhaust line is designated as "L1" and the feedback line is designated as L3.

As shown in FIGS. 2-4, the inline mixer 120 has a circular housing 121. The circular housing 121 has an inner space 121a, and a plurality of first rotating fans 122 and a second rotating fan 123 are installed in the inner space 121a.

The second rotary fan 123 is located between the first rotary fan 122, the first rotary fan 122 is designed to rotate in the forward direction, the second rotary fan 123 is designed to rotate in the reverse direction do. Caps 124 are installed at both ends of the circular housing 121.

The first rotary fan 122 and the second rotary fan 123 are formed with a rotary groove 120a and a rotary protrusion 120b inserted into the rotary groove 120a at the center thereof, and the rotary protrusion 120b. ) Is inserted into the rotary groove 120a so that the first rotating fan 122 and the second rotating fan 123 may be rotated.

In addition, the inline mixer 120 is connected with a first chemical input unit 127 for adjusting the pH of the wastewater and a second chemical input unit 129 for inputting a chemical for inducing a chemical reaction (see FIG. 1). ).

As such, the chemicals for adjusting pH and the chemicals for inducing a chemical reaction are introduced into the housing 121, and the first rotating fan 122 and the second rotating fan 123 are rotated in opposite directions to be stirred. It is composed.

Waste water that has passed through the in-line mixer 120 is stored in the first service tank 130 through the waste water line (L). The waste water stored in the first service tank 130 is subjected to the electric coagulator 140 by the pump P1.

6 to 8, in the coagulator 140, a negative electrode plate 143 is disposed between the plurality of positive electrode plates 142 and the positive electrode plates 142 in the housing 141. Waste water passing through the housing 141 is electrolyzed by the power applied to the positive electrode plate 142 and the negative electrode plate 143.

In the process of passing through the positive electrode plate 142 and the negative electrode plate 143, the waste water is electrically agglomerated, and at the same time, hydrogen gas and oxygen gas are generated by a redox reaction. 9 and 10, the waste water mixed with the hydrogen gas and the oxygen gas is moved to the complex purification apparatus 150 through the waste water inlet pipe 152 and then purified by coagulation and precipitation.

The complex purification device 150 includes a complex tank 151 having a space portion 151a formed therein.

The wastewater inlet pipe 152 is fixedly installed in the composite tank 151 to be connected to the electro-aggregator 140.

In order to guide the wastewater supplied from the wastewater inflow pipe 152 to the lower portion of the complex tank 151 and to remove the suspended matter contained in the wastewater, a float removal pipe 153 is installed at the upper center of the complex tank 151. .

The wastewater introduced into the complex tank 151 through the wastewater inlet pipe 152 discharges the hydrogen gas and the oxygen gas by the suspended matter removing pipe 153 and floats the suspended matter upward.

The float suction pipe 156 is installed in the complex bath 151 to suck the float floating on the upper portion of the float removal pipe 153. The float suction pipe 156 is connected to the waste part 157 (see FIG. 1).

An inclined disc 154 is formed downward on the outer circumferential surface of the float removing pipe 153 to aggregate and settle the wastewater introduced into the complex tank 151.

The slanted disc 154 has a plurality of wastewater through-holes 154a formed in an adjacent portion of the float removing pipe 153.

The inclined disc 154 is made of a lipophilic material having good aggregate adsorption rate of 55 degrees, and is formed in multiple stages.

The end of the inclined disc 154 in the uppermost layer is in close contact with the inner circumferential surface of the composite jaw 151, but the end of the inclined disc 154 in the lower portion is not in close contact with the inner circumferential surface of the composite jaw 151. Installed at regular intervals (see FIG. 10).

The interval between the inclined discs 154 is 7-10 cm, and a plurality of valleys (not shown) are formed on the surface of the inclined discs 154, and when the aggregates accumulate and become heavy, the composite jaw 151 It is desirable to fall to the bottom.

The waste water suction pipe 155 is fixedly installed on the inner circumferential surface of the composite tank 151 so as to settle the aggregate while passing through the inclined disc 154 and suck the waste water that has passed through the waste water through hole 154a.

The support jaw 151b for supporting the wastewater suction pipe 155 is formed in the middle of the complex bath 151.

The float and the deposit storage tank 156a are connected to the complex tank 151 through a discharge line L1 to discharge the precipitate through the hopper 151a under the complex tank 151.

The complex purification device 150 and the plurality of filters 160 are connected by a waste water line L, and the filtration pump P2 is installed in the waste water line L.

Water passed through the complex purification device 150 is a relatively clean water is passed through a filter 160 such as a sand filter, a cartridge filter, an activated carbon filter by the filter pump (P2).

The filter 160 and the second service tank 170 are connected to the waste water line L, and the second service tank 170 and the membrane 180 are also connected to the waste water line L. A pump P3 is installed in the waste water line L to finally purify the water of the second service tank 170 through the membrane 180, and finally purify the purified water to the third service tank 190. ). The waste water line (L) is provided with a bypass pipe (L3).

Since the membrane 180 removes the ultrafine particles, the surface of the filtration membrane is blocked by the fine particles, so it is preferable to spray external compressed air to the membrane 180 to remove the fine particles by a program setting. .

The wastewater treatment process of the wastewater treatment facility 100 according to the present invention configured as described above is as follows.

When a certain amount of waste water is stored in the waste water storage tank T, the pump 110 pumps the waste water toward the inline mixer 120.

The in-line mixer 120 serves to agitate the waste water, and the first rotary fan 122 and the second rotary fan 123 rotate in opposite directions by the hydraulic pressure of the waste water. Stir.

The first chemical input unit 127 and the second chemical input unit 129 inject the chemicals for adjusting the pH of the waste water and the chemicals for inducing a chemical reaction into the in-line mixer 120.

The first service tank 130 stores the waste water stirred by the in-line mixer 120.

The pump P1 operates to supply wastewater stored in the first service tank 130 into the electric coagulator 140.

In the process of passing through the positive electrode plate 142 and the negative electrode plate 143 in the electric coagulator 140, the waste water is electrically coagulated, and at the same time, hydrogen gas and oxygen gas are generated by redox reaction.

In this case, in order to effectively remove the generated gas and suspended matter, wastewater and suspended matter are introduced into the suspended matter removal pipe 153 of the complex purification apparatus 150 through the wastewater inlet pipe 152.

Thereafter, the float is introduced into the waste part 157 through the float suction pipe 156. The waste water is transferred to the lower portion of the space portion 151a of the composite bath 151. As shown by the arrow, the wastewater is discharged to the wastewater through hole 154a while moving along the inclined disc 154.

At this time, the inclined disc 154 has a good aggregate adsorption rate of 55 degrees, the aggregates are agglomerated with each other, and the weight thereof becomes heavy and falls below the composite tank 151.

The sludge falling in this way is introduced into the waste part 157 through the sludge discharge pipe L1. The relatively clean purified waste water from which floats and sludge have been removed is sucked into the holes 155a of the waste water suction pipe 155 by the operation of the pump P2.

The waste water is then passed through a plurality of filters 160, for example, sand filter, cartridge filter, active plate filter to remove the fine particles secondary and the secondary treated water is temporarily stored in the second service tank 170 The final purification is carried out via the membrane 180 by the filtration pump P3. In this case, the membrane 180 removes the ultrafine particles into the UF membrane, so that the fine particles are sprayed with external compressed air by a program setting in order to prevent clogging of the filter membrane surface, thereby removing the fine particles on the surface of the filter membrane to increase the filtration efficiency.

As described above, in the present invention, the waste water is agitated using an inline mixer, the oxidation and reduction reaction of the waste water is carried out using an electric flocculator, the suspended matter is floated and removed in one complex tank, and the sludge is precipitated. The entire composition is compactly constructed to clean more efficiently, so that small-scale industrial wastewater and washing wastewater can be treated promptly and efficiently at the place where pollution occurs, and it can be operated easily by anyone, and has a great advantage in protecting the environment. .

As such, the rights of the present invention are not limited to the above-described embodiments, but are defined by the claims, and various modifications can be made within the scope of the claims by those skilled in the art. It is self evident.

110: pump
120: inline mixer
121: round housing
121a: space section
122: first rotating fan
123: second rotating fan
124: cap
130: first service tank
140: electric flocculator
141: housing
142: plus electrode plate
143: negative electrode plate
150: compound purification device
151: compound jaw
151a: space section
151b: support jaw
152: wastewater inlet pipe
153: float removal tube
154: inclined disc
154a: wastewater through hole
155: wastewater suction pipe
156: float suction pipe
157: discharge section
160: filter
170: second service tank
180: membrane
190: third service tank

Claims (5)

A pump 110 for pumping the waste water stored in the waste water storage tank T;
An in-line mixer (120) for agitating the waste water supplied from the pump (110);
A first service tank (130) for storing the waste water stirred by the in-line mixer (120);
An electric agglomerator (140) for electrolyzing the waste water stored in the first service tank (130);
A complex purifier (150) for receiving the electrolyzed wastewater by the electrocoagulator (140) to coagulate and settle and to purify it;
A plurality of filters 160 for filtering the waste water purified by the complex purification device 150;
A second service tank 170 for storing the waste water which has passed through the filter 160;
A membrane 180 for purifying the waste water stored in the second service tank 170 again; And
And a third service tank (190) for storing purified water that has passed through the membrane (180).
The inline mixer 120 is
A circular housing 121 in which an inner space 121a is formed;
A plurality of first rotating fans 122 rotatably installed in the space part 121a of the circular housing 121 in a forward direction;
A second rotating fan 123 positioned between the first rotating fans 122 and rotatably installed in a reverse direction; And
A cap 124 covering both ends of the circular housing 121;
The first rotating fan 122 and the second rotating fan 123 have a rotating groove 120a and a rotating protrusion 120b inserted into the rotating groove 120a at a center thereof, and the rotating protrusion 120b. Is inserted into the rotary groove (120a) waste water treatment facility, characterized in that the first rotary fan 122 and the second rotary fan 123 can be rotated. delete The method according to claim 1,
The electric flocculator 140
A negative electrode plate 143 is disposed between the plurality of positive electrode plates 142 and the positive electrode plate 142 in the housing 141, and applied to the positive electrode plate 142 and the negative electrode plate 143. Waste water treatment facility characterized in that the waste water is electrolyzed via the housing 141 by the supplied power. A pump 110 for pumping the waste water stored in the waste water storage tank T;
An in-line mixer 120 for agitating the waste water supplied from the pump 110;
A first service tank (130) for storing the waste water stirred by the in-line mixer (120);
An electric agglomerator (140) for electrolyzing the waste water stored in the first service tank (130);
A complex purifier (150) for receiving the electrolyzed wastewater by the electrocoagulator (140) to coagulate and settle and to purify it;
A plurality of filters 160 for filtering the waste water purified by the complex purification device 150;
A second service tank 170 for storing the waste water which has passed through the filter 160;
A membrane 180 for purifying the waste water stored in the second service tank 170 again; And
And a third service tank (190) for storing purified water that has passed through the membrane (180).
The complex purification device 150
A composite jaw 151 having a space 151a formed therein;
A wastewater inflow pipe 152 installed in the complex tank 151 to be connected to the electro-aggregator 140;
A float removal pipe 153 installed at an upper center of the complex tank 151 to guide the waste water supplied from the waste water inlet pipe 152 to the bottom of the complex tank 151 and to remove the float contained in the waste water;
An inclined disc 154 formed downward on an outer circumferential surface of the float removing tube 153 and having a plurality of wastewater through-holes 154a formed in an adjacent portion of the float removing tube 153;
A waste water suction pipe 155 fixedly installed on an inner circumferential surface of the composite tank 151 so as to settle the condensed water while passing through the inclined disc 154 and suck the waste water that has passed through the waste water through hole 154a;
A float suction pipe 156 installed in the complex bath 151 to suck the float floating on the upper portion of the float removal pipe 153; And
And a sediment discharge unit (157) for discharging the sediment through the hopper (151a) at the bottom of the complex tank (151). The method of claim 4, wherein
The complex tank 151 is a waste water treatment facility, characterized in that the support jaw (151b) for supporting the waste water suction pipe 155 is formed in the middle.

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