KR200362552Y1 - Apparatus for separating and removing pollutants in water with evaporated and condensed of wastewater - Google Patents

Abstract

The present invention relates to a device for separating / removing contaminants in wastewater evaporation condensate, in which the wastewater evaporation condensate flows into a vacuum section that differentiates the vacuum conditions step by step, but the steam changes the boiling point of each step. Low boiling point material separation means for sequentially evaporating the low boiling point material in the waste water evaporative condensate circulated through the heat of evaporation to generate the first treatment water of the low boiling point separation liquid and the final low boiling point material evaporated by the steam to be cooled and condensed. ; The first treatment water generated by the low boiling point material separation means is introduced to remove the suspended solids therefrom, and the remaining pollutants are separated / removed using reverse osmosis from the first treated water from which the floating substances are removed. First reverse osmosis means for generating treated water; Degassing the secondary treated water generated by the first reverse osmosis means and re-isolating the remaining contaminants in the degassed secondary treated water using reverse osmosis to generate tertiary treated water and tertiary treatment And a second reverse osmosis means for adsorbing and purifying residual contaminants in water.

According to the present invention, it is possible to physically separate / remove the contaminants contained in the unspecified high concentration of wastewater evaporation condensate, but has an excellent effect to stabilize the water quality of the final treated water with continuous and high treatment efficiency.

Description

Separation and removal device for contaminants in wastewater evaporation condensate {APPARATUS FOR SEPARATING AND REMOVING POLLUTANTS IN WATER WITH EVAPORATED AND CONDENSED OF WASTEWATER}

The present invention relates to a device for separating and removing contaminants contained in evaporative condensate of wastewater, and more particularly, contaminants present in evaporative condensate of wastewater by evaporation and condensation with water in evaporative condensation of wastewater. The present invention relates to an apparatus for separating and removing contaminants in evaporated condensate that can physically separate and remove water to stabilize the quality of final treated water.

Various types of condensate treated by evaporating and condensing wastewater have low boiling point organic compounds with lower boiling point than water or organic compounds with similar boiling point and boiling point higher than water but azeotropically condensing with water The organic compound of is mixed.

The water quality of the wastewater evaporation condensate is varied with the concentration of the low boiling point organic compound and mixed with the amount of the organic compound incorporated into the condensate. In particular, in the case of an unspecified high concentration of wastewater, the water quality of the condensation condensate is severely changed for the same reason, resulting in a significant drop in the efficiency of wastewater treatment.

Therefore, the contaminants contained in the wastewater evaporative condensate are treated to stabilize the final treated water of the wastewater. According to the prior art, a post treatment method of condensate using microorganisms is applied.

However, the post-treatment method of the evaporative condensate using the microorganism is a problem that is difficult to apply to unspecified high concentration wastewater for the following reasons.

If you look at why,

First, condensate that has evaporated and condensed most of the wastewater has a very low nitrogen or phosphorus content and thus has an environment in which microorganisms lack nutrients.

Second, in many cases, a large amount of hardly decomposable organic compounds are contained in the evaporative condensate of wastewater.

Third, even when a toxic substance is introduced, even micro traces cause the death of microorganisms, which prevents the treatment of pollutants.

Fourth, when the organic matter concentration of the wastewater evaporation condensate changes abruptly, there is a difficulty that the weak microorganisms cannot easily adapt to the load fluctuation.

The present invention was devised to solve the above problems, and its purpose is to physically separate and remove various organic compounds contained in condensate obtained by evaporating and condensing an unspecified high concentration of wastewater. The present invention provides a device for separating and removing contaminants in wastewater evaporative condensate to stabilize water quality.

The present invention provides an apparatus for separating and removing contaminants in wastewater evaporative condensate that enables continuous treatment of unspecified high concentrations of wastewater, but ensures that the treatment efficiency is always constant regardless of the concentration of pollutants in the wastewater.

The present invention provides a device for separating and removing contaminants in the wastewater evaporation condensate that can reduce the required area according to the installation of the device compared to the conventional microbial treatment method and enables continuous and stable operation.

1 is an overall configuration showing an embodiment of the contaminant separation and removal device in the wastewater evaporation condensate according to the present invention.

Figure 2 is a block diagram showing a low boiling point material separation means according to the present invention.

Figure 3 is a principle diagram for explaining the principle of the low boiling point material separation means according to the present invention.

Figure 4 is a detailed view showing a low boiling point material separation means according to the present invention.

Figure 5 is a detailed block diagram showing a first reverse osmosis means according to the present invention.

Figure 6 is a detailed block diagram showing a second reverse osmosis means according to the present invention.

Explanation of symbols on the main parts of the drawings

100: low boiling point material separation means 110: evaporative condensate storage tank

120: separation tower 120a: the first separator

120b: second separator 120c: third separator

121: steam inlet 122: heat transfer tube

123: packing 124: circulation piping

125: spray nozzle 126: steam inlet

127: liquid level meter 128: evaporative condensate inlet

130: vacuum pump 140: circulation pump

150: condenser 200: first reverse osmosis means

210: cooler 220: primary treated water reservoir

231,232: transfer pump 240: chemical tank

251: multilayer filter 252: micro filter

260: first reverse osmosis filter 300: second reverse osmosis means

310: degassing tower 311: degassing fan

321,322,323: Transfer pump 330: Chemical tank

340: micro filter 350: second reverse osmosis filter

360: tertiary treated water storage tank 370: adsorption tower

The present invention for achieving the above object is to allow the wastewater evaporation condensate to be circulated by introducing the wastewater evaporation condensate into the vacuum section differentiated by the vacuum condition step by step, but the wastewater evaporation condensation water circulated through the evaporative heat of steam that changes the boiling point range of each step. Low boiling point material separation means for sequentially evaporating the low boiling point material to produce first treated water of the low boiling point separation liquid and the final low boiling point material evaporated by the steam to be cooled and condensed; The first treatment water generated by the low boiling point material separation means is introduced to remove the suspended solids therefrom, and the remaining pollutants are separated / removed using reverse osmosis from the first treated water from which the floating substances are removed. First reverse osmosis means for generating treated water; Degassing the secondary treated water generated by the first reverse osmosis means and re-isolating the remaining contaminants in the degassed secondary treated water using reverse osmosis to generate tertiary treated water and tertiary treatment It consists of a second reverse osmosis means for adsorbing and purifying residual contaminants in water.

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

Figure 1 is a schematic overall configuration showing an embodiment of the contaminant separation and removal apparatus in the wastewater evaporation condensate according to the present invention, Figure 2 is a block diagram showing the separation means of low boiling point material according to the present invention, Figure 3 is the present invention Figure 4 is a principle diagram for explaining the principle of the low boiling point material separation means according to the present invention, Figure 4 is a detailed view showing a low boiling point material separation means according to the present invention, Figure 5 is a detailed configuration diagram showing a primary reverse osmosis means according to the present invention 6 is a detailed block diagram showing the secondary reverse osmosis means according to the present invention.

As shown in Figures 1 to 6, the contaminant separation and removal apparatus in the wastewater evaporation condensate according to the present invention is to be circulated by introducing the wastewater evaporation condensate into the vacuum portion differentiated in step by step vacuum conditions, but the change in boiling point range of each step The low boiling point material is sequentially evaporated from the wastewater evaporative condensate circulated through the evaporative heat of steam which gives a low boiling point to produce the first treatment water of the low boiling point separation liquid, and the final low boiling point material evaporated by the steam is cooled and condensed. Separating means 100; The first treatment water generated by the low boiling point material separation means 100 is introduced to remove suspended solids therefrom, and the residual water is removed using reverse osmosis in the first treatment water from which the suspended substances are removed. A first reverse osmosis means (200) for separating / removing the contaminants to generate the secondary treated water; Degassing the secondary treated water generated by the first reverse osmosis means 200 and re-isolating the remaining contaminants in the degassed secondary treated water using reverse osmosis to generate tertiary treated water. And a second reverse osmosis means (300) for adsorbing and purifying residual contaminants in the tertiary treated water.

The low boiling point material separation means 100 is a waste water by the temperature and pressure difference while the self-circulation and mobile circulation of the evaporation condensate storage tank 110 and the evaporation condensate condensate flowing from the evaporation condensate storage tank 110 to store the waste water evaporation condensate Sequential configuration of the first separator 120a, the second separator 120b, and the third separator 120c in which vacuum pressure and evaporation heat are differentially formed therein to sequentially separate the low boiling point material in the evaporative condensate to generate the first treated water. The separation tower 120, the vacuum pump 130 to form a predetermined vacuum pressure in the first separator, the second separator and the third separator, and the circulation of the wastewater evaporation condensate is possible, A condenser 150 for cooling and condensing the low boiling point material finally separated through the separation pump 120 and the circulation pump 140 installed to match each of the first separator, the second separator, and the third separator. It is configured.

At this time, the first separator 120a, the second separator 120b, and the third separator 120c of the separation tower 120 have the same structure, but only the difference between the vacuum condition and the temperature condition formed therein. It is installed on the lower part of the fuselage forming each separator, the heat transfer tube 122 for dissipating heat by receiving steam from the steam inlet 121, and the packing 123 is installed on the upper part of the fuselage to facilitate gas-liquid contact And a spray nozzle 125 installed above the packing 123 in the fuselage and receiving the wastewater evaporation condensate circulated from the circulation pipe 124 connected to the circulation pump 140 to spray the condensate. A vapor inlet 126 for introducing the gas, a liquid level meter 127 for monitoring the liquid level inside the fuselage, and a wastewater evaporation condensate for separating low boiling point materials into the fuselage. Consists of evaporating the condensate inlet (128). In addition, although not shown, it is preferable to be configured to include a temperature sensor which is installed in connection with the fuselage and senses the temperature in the fuselage to control the temperature.

Here, the separation tower 120 has a condition in which the vacuum pressure or the temperature condition increases as the first separator 120a moves from the first separator 120a to the third separator 120c. However, in the temperature condition, the saturation temperature of the water (about 100 ° C.) It is preferable to configure to maintain the lower boiling point to increase the concentration of the low boiling point material having a lower boiling point than water in the vapor evaporated to improve the separation efficiency of the low boiling point material.

The first reverse osmosis means 200 is a cooler 210 for cooling the primary treatment water generated through the separation tower 120 and for storing the primary treatment water cooled by the cooler 210 Primary treatment water storage tank 220, and the chemical treatment tank (240) for transferring the primary treatment water through the transfer pump 231 to adjust the pH of the primary treatment water during the transfer process, and the pH adjusted 1 The multi-layer filter 251 and the micro filter 252 to remove the suspended solids from the secondary treated water to remove the suspended solids through the secondary, and the first treated water from which the suspended solids are removed. It is composed of a first reverse osmosis filter 260 to perform a separation operation to generate a second treatment water.

The second reverse osmosis means 300 is introduced into the secondary treatment water generated by the first reverse osmosis filter 260, but in contact with the air supplied by the degassing fan 311, the remaining low boiling point in the secondary treatment water A degassing tower 310 to remove the substance, and a chemical tank 330 to transfer the degassed secondary treated water through a transfer pump 321 while controlling the pH of the secondary treated water during the transfer process; The micro filter 340 for completely removing the suspended solids from the pH-controlled secondary treated water and the secondary treated water from which the suspended solids are removed, while performing the separation of pollutants by reverse osmosis and tertiary treatment. A second reverse osmosis filter 350 for generating water, a third treated water storage tank 360 for storing the third treated water generated by the second reverse osmosis filter 350, and the third treated water Inflow of the third treatment water from the reservoir 360, but adsorbs a small amount of residual pollutants therefrom It is composed of an adsorption tower 370 for treatment and purification.

At this time, the adsorption tower 370 is a physical purification of the tertiary treated water by using the activated carbon adsorption method.

Referring to the operation relationship and operation of the contaminant separation and removal device in the wastewater evaporative condensate according to the present invention made as described above.

The wastewater evaporation condensate transferred from the evaporation concentrator (not shown) is stored in the evaporation condensate storage tank 110 and the vacuum pump 130 is operated to form the first to third separators 120a, 120b, and 120c of the separation tower 120. Vacuum is formed at the vacuum pressure of 100 to 160 Torr, respectively. At this time, the vacuum pressure of each separator is typically such that the first separator 120a is 100 Torr, the second separator 120b is 122 Torr, and the third separator 120c is formed at 154 Torr.

When a vacuum of a predetermined pressure is formed in each separator, wastewater evaporative condensed water (raw water) is introduced into the first separator 120a from the evaporative condensate storage tank 110, and then a circulation pump 141 is operated to enter the first separator 120a. The introduced wastewater evaporation condensate is forced to circulate in the first separator. At this time, by supplying steam to the outside of the heat transfer tube 122 installed in the first separator (120a) to maintain a constant appropriate temperature in the first separator (120a), formed in the first separator (120a) by steam supply The temperature at which it is typically maintained is maintained at 45 ° C. Accordingly, in the wastewater evaporative condensate circulating in the first separator 120a, the low boiling point material is evaporated and separated / removed first, and the evaporated low boiling point material is introduced into the condenser 150 to be cooled / condensed.

Wastewater evaporative condensate (circulating water) from which a small amount of low boiling point material is first removed is introduced into the second separator (120b) and forcedly circulated in the second separator (120b) by a circulation pump (142). A constant temperature is formed in the second separator 120b by steam supplied to the outside, in which case it is typically maintained at 50 ° C. Accordingly, even in the second separator 120b, the low boiling point material is evaporated to have secondary separation / removal.

The wastewater evaporation condensate (circulating water) from which the low boiling point material is secondarily removed by the second separator (120b) is introduced into the third separator (120c) again and forcedly circulated in the third separator (120c) by the circulation pump (143). And the predetermined temperature is formed in the third separator (120c) by the steam supplied to the outside of the heat transfer tube 122, in this case it is usually maintained to 55 ℃. Accordingly, even in the third separator 120c, the low boiling point material is evaporated to have a third separation / removal.

At this time, the waste water evaporation condensed water (circulating water) forced to circulate in each separator through the respective circulation pipes (141, 142, 143) is sprinkled upward through the packing (123) through spray nozzles 125 respectively installed in the upper portion of each separator. Lose.

In addition, in the first to third separators 120a, 120b, and 120c, the internal temperature can be kept constant by the detection of a temperature sensor (not shown), and the low boiling point material evaporated from the third separator 120c. Is re-evaporated by contact with the wastewater evaporation condensate (circulating water) flowing into the second separator (120b) and circulated, and the low boiling point material re-evaporated in the second separator (120b) is again the first separator (120a). The low-boiling matter, which is finally re-evaporated by being in contact with the wastewater evaporative condensate, which is also circulated again, is re-evaporated, and is finally re-evaporated in the first separator (120a) to be cooled and condensed. Is processed.

Here, the operation as described above is a low boiling point material in the waste water evaporation condensate (circulating water) of each separator while the vapor containing the low boiling point material is moved through the steam inlet 126 by the temperature and pressure difference of each separator. To move from the third separator (120c) to the first separator (120a) again through the second separator (120b), by changing the range of the boiling point by sequentially increasing the concentration of the low boiling point in the vapor separation It is to improve the efficiency significantly.

On the other hand, the primary treatment water generated by the third separation / removal of the low boiling point material is introduced into the cooler 210, cooled, and temporarily stored in the primary treatment water storage tank 220 and then transported by the transfer pump 231 And the chemical treatment from the chemical tank 240 during the transfer process to adjust the pH of the first treatment water.

The pH-treated primary treated water is passed through the multi-layer filter 251 to remove the suspended solids and again to pass through the micro filter 252 to remove even a small amount of suspended solids.

The primary treated water from which the suspended solids are removed is introduced into the first reverse osmosis filter 260 by the transfer pump 232 and the remaining contaminants are separated / removed while passing through the membrane of the first reverse osmosis filter 260. It will generate the difference treatment water. At this time, the secondary treated water including the contaminants passed through the membrane of the first reverse osmosis filter 260 is sent to the degassing tower 310, the contaminants that do not pass through the membrane of the first reverse osmosis filter 260 Concentrate the feed to the raw water reservoir (not shown) of the evaporative concentrator prior to this unit.

The secondary treated water introduced into the degassing tower 310 is contacted with air supplied by the degassing fan 311 to degas the residual low boiling point material and gas in the secondary treated water.

The degassed secondary treated water is transferred by the transfer pump 321 to complete the pH adjustment by chemical treatment from the chemical tank 330 during the transfer process, and completely removes the suspended solids through the micro filter 340. After that, the second pump may be introduced into the second reverse osmosis filter 350 by the transfer pump 322 to separate / remove the contaminants again. As a result, the third treatment water is generated.

The generated tertiary treated water is introduced into the tertiary treated water storage tank 360, and contaminants that do not pass through the membrane of the second reverse osmosis filter 350 are concentrated and treated. Inlet).

In addition, the third treatment water is introduced into the adsorption tower 370 from the tertiary treatment water storage tank 360 through the transfer pump 323, and the third treatment water introduced therein is activated carbon in the adsorption tower 370. Finally, the adsorption treatment is performed using an adsorption method to purify the tertiary treated water to produce a final treated water having stable water quality.

As described above, according to the contaminant separating and removing device in the wastewater evaporation condensate according to the present invention, a low boiling point organic compound having a relatively low molecular weight is separated in one step, and a high boiling point organic compound having a relatively high molecular weight is used by reverse osmosis in two steps. And degassing the remaining low-boiling compounds and degassing in three stages, reusing the reverse osmosis to remove the remaining contaminants as much as possible, and then performing the final purification treatment using activated carbon adsorption. Since the pollutants contained in the wastewater evaporation condensate are physically separated / removed, there is an excellent effect of separating / removing the pollutants in the wastewater evaporation condensate with high efficiency.

In addition, the present invention physically separates, removes and adsorbs contaminants in the wastewater evaporation condensate in four stages, so that it is possible to continuously treat unspecified high concentrations of wastewater. Even if a difference occurs, it provides the usefulness of maintaining the constant without changing the processing efficiency. Accordingly, there is an excellent effect to maintain a stable water quality of the final treated water.

Furthermore, the present invention can reduce the required area according to the installation of the device compared to the conventional microbial treatment method, and can eliminate the phenomenon that the treatment efficiency is reduced by the death of microorganisms due to the instant inflow of toxic substances. It has the effect of continuous and stable operation in pollutant treatment.

Claims (5)

The waste water evaporation condensate is introduced into the vacuum section differentiated by the vacuum condition step by step, and the low boiling point material is sequentially evaporated from the waste water evaporation condensate circulated through the evaporative heat by steam which changes the boiling point of each step. Low boiling point material separating means for generating primary treated water and allowing the final low boiling point material evaporated by the steam to be cooled and condensed; The first treatment water generated by the low boiling point material separation means is introduced to remove the suspended solids therefrom, and the remaining pollutants are separated / removed using reverse osmosis from the first treated water from which the floating substances are removed. First reverse osmosis means for generating treated water; Degassing the secondary treated water generated by the first reverse osmosis means and re-isolating the remaining contaminants in the degassed secondary treated water using reverse osmosis to generate tertiary treated water and tertiary treatment And a second reverse osmosis means for adsorbing and purifying residual contaminants in the water. The method of claim 1, The low boiling point material separating means sequentially separates the low boiling point material in the wastewater evaporation condensate by a temperature and pressure difference while circulating and moving the evaporative condensation water storage tank for storing the wastewater evaporation condensate and the circulation of the evaporation condensation water flowing from the evaporation condensation water storage tank. A separation tower sequential configuration of a first separator, a second separator, and a third separator, in which vacuum pressure and evaporative heat are differentially formed therein to generate the first treated water, and the first separator, the second separator, and the third separator A vacuum pump for forming a constant vacuum pressure in the pump, a circulation pump capable of circulating the wastewater evaporative condensate, and installed in correspondence with the first separator, the second separator, and the third separator, and the separation tower side. Evaporation of wastewater, characterized in that consisting of a condenser for cooling and condensation of low boiling point material finally separated through Removing contaminant removal device in water. The method of claim 1, The first reverse osmosis means includes a cooler for cooling the primary treated water generated through the separation tower, a primary treated water storage tank for storing the primary treated water cooled by the cooler, and the primary treated water. Chemical tank for controlling the pH of the first treated water during the transfer process, and a multi-layer filter for removing the suspended solids by removing the suspended solids from the pH-controlled first treated water twice. And a first reverse osmosis filter configured to introduce a micro filter and the first treated water from which the suspended solids are removed, and to separate the pollutants by reverse osmosis to generate a second treated water. Separation and removal device of contaminants in condensate. The method of claim 1, The second reverse osmosis means is a degassing tower for introducing the second treatment water generated by the first reverse osmosis filter while contacting with the air supplied by the degassing fan to remove the residual low boiling point material in the secondary treatment water; The degassed secondary treated water is transferred through a transfer pump, and a chemical tank for adjusting the pH of the secondary treated water during the transfer process, and a micro filter for completely removing suspended solids from the pH-controlled secondary treated water. And a second reverse osmosis filter which introduces secondary treated water from which the suspended solids are removed, and generates a third treated water by performing a contaminant separation operation by reverse osmosis, and generated by the second reverse osmosis filter. It consists of a third treatment water storage tank for storing the third treatment water, and an adsorption tower for introducing the third treatment water from the third treatment water storage tank, the adsorption treatment and purification of the remaining contaminants therefrom. Separation and removal device of contaminants in the wastewater evaporation condensate. The method of claim 2, Separation tower forming the sequential configuration of the first separator, the second separator and the third separator is installed in the lower part of the fuselage and the heat transfer tube that receives heat from the steam inlet to the heat dissipation, and is installed on the upper part of the fuselage and the gas-liquid contact A packing for smoothing, a spray nozzle installed at an upper side of the packing in the fuselage and receiving wastewater evaporative condensate circulated from the circulation pipe connected to the circulation pump side, and spraying the spouted water; and a steam inlet for introducing steam into the fuselage; A liquid level gauge for monitoring the liquid level inside the fuselage, an evaporative condensate inlet for introducing a wastewater evaporation condensate for separation of low boiling point material into the fuselage, and installed in connection with the fuselage; It characterized in that it comprises a temperature sensor for controlling the temperature by sensing the temperature Separating and removing contaminants in the waste water evaporation system for the condensate.