KR100211347B1 - Method and apparatus for purifying waste water - Google Patents

Abstract

The present invention relates to a treatment method and a treatment apparatus for purifying malignant wastewater, such as leachate, and a predetermined amount of feed is added to a stirrer and heated to a constant temperature in a stirred state by adding a plurality of chemicals to the heated mixture. After re-injecting and stirring the chemicals, the precipitates are precipitated for a predetermined time so that they can be purified by repeating the above process several times. Because it is purified in about ten hours, the conventional three Compared to four days, the purification time is significantly shortened and sediment is generated less. In addition, colorless and odorless transparent purified water can be obtained, while also reducing the purification time, reducing the purification cost, and reducing the waste of manpower.

Description

Method and apparatus for purification of malignant wastewater

Figure 1 is an exemplary process chart showing a treatment process according to the purification method and apparatus in the present invention.

* Explanation of symbols for main parts of the drawings

1 stirrer 2 heating part

3: sedimentant 4: reservoir

5: filter part 6: sediment recovery container

7,7-1,7-2: Valve 8: Sediment

10: first purification unit 11: the first purification water

20: second purification unit 21: second purification water

30: third purification unit 31: the third purification water

40: fourth purification unit 41: fourth purification water

The present invention relates to a treatment method and a treatment apparatus for purifying malignant wastewater such as leachate.

More specifically, it is possible to provide purified water by repeating the leachate generated from the piled up waste or waste water discharged from factories and homes by an uncomplicated method and apparatus, which will be described in more detail. Of the feed into a stirrer and added a number of chemicals and heated to a constant temperature while stirring, the heated mixture is added to the medicine again and stirred, and then precipitated for a predetermined time to pass through the filter to purify and The present invention relates to a method and apparatus for repeatedly purifying the same process several times.

As a conventional wastewater treatment barrier, a method of purifying wastewater gradually gradually descending by a stepped sedimentation tank is widely known. There is a problem that costs too much and dilutes the Far Eastern chemicals at each step to remove the toxic and turbid conditions and discharge them, so even after a series of purification processes, the water is discharged in turbidity with extremely low transparency. In addition, there is a problem that the toxic chemical smell is severely generated in the discharged water, and in particular, the water purified by the kind of method is discharged incompletely purified and incompletely purified. There was a problem of destroying.

For example, since the amount of malignant waste water generated by sedimentation in a conventional landfill is extremely large, it is more realistic than the amount that is purified and discharged to be discharged as it is without purification.

Even if malignant wastewater is purified and discharged 3 It takes a long time of about 4 days, especially the treatment process is too complicated, there is a problem that takes a lot of purification costs.

In particular, when working in a landfill site, ammonia gas is generated, resulting in a bad smell, resulting in respiratory diseases, and even water that has been finally purified due to a lot of chemicals becomes cloudy brown. The situation is not released in the state.

The present invention is to provide a method and apparatus for purifying malignant wastewater which can solve the above problems.

An object of the present invention is to provide a processing method and apparatus which is composed of steps and devices that are not complicated and can greatly improve the purification efficiency per unit time and can greatly improve the purification efficiency while reducing the purification cost.

Another object of the present invention relates to a purification process and apparatus so that the transparency of the purified water is extremely good so that it does not adversely affect the ecosystem even if released immediately, another object of the present invention is to Purification process can be minimized while maximizing the utilization of the injected chemicals while minimizing the amount of chlorine, and the purified water can be purified while allowing the original properties and components of the water to be easily recovered. Relates to a device.

For the above and other purposes of the present invention, 800 Giolite 3 in 1200cc wastewater 7g, Sodium Ichinate or Alginate 0.2 0.8 g, bleach 3 9g mixed and 70g 95 Heated to potassium hydroxide (KOH) 2 6 g and potassium chloride 15 25g each sequentially put 20 Stir 40 minutes and 40 Preventing for 8 minutes, settling and filtering to obtain the first purified water, 0.2 mg of magnesium carbonate in the first purified water 0.8 g, wormwood 0.1 0.5 g, bleached powder 1 4 g of 75 95 Calcium chloride 5 after heating to 15 g potassium hydroxide (KOH) 1 4g and 20 Stir for 40 minutes to obtain the second purified water, 0.02 phosphoric acid in the second purified water 0.08 g, disinfectant 1 4g in 20 Stir 40 minutes and 30 It was left to stand for 90 minutes, precipitated, and filtered to obtain a third purified water. After the above heating, the evaporated water is led to another container and collected. It is achieved by a purification apparatus for malignant wastewater which allows to pass through alum for 150 minutes.

In one side of the stirrer (1) having a heating unit (2) at the lower side is provided with the precipitant (3) to communicate with the reservoir (4) on one side of the precipitant (3) to communicate with the filter in the reservoir (4) It is achieved by the purification apparatus for malignant wastewater provided with the purification part provided with the part 5 several times.

In the method for treating malignant wastewater according to the present invention, the wastewater used in the treatment method of the present invention is very concerned about the wastewater that is contaminated with groundwater while the ground is severely contaminated by the leachate generated from the landfill, so that the leachate is collected. Used as a sample.

Since the odorite blended into the leachate, which is a sample, is not roasted and odor is generated in the leachate or it has a black color, it is used to give off odor and discoloration. It is preferable not to make the alginic acid or sodium ichinate so that the black color contained in the leachate is able to aggregate and precipitate the molecules, and to control the heavy metals, an appropriate amount is added in proportion to the amount of the leachate, In addition, bleaching powder (Ca (CIO) ₂ ) promotes the mixing state, so that the sterilization, disinfection and bleaching is carried out.

In this way, the leachate in which the dilute iolite and alginic acid or sodium ichinate and bleach were diluted was removed by conventional heating means. 95 By heating up to the point that the molecules move actively and the reaction rate can be accelerated and sterilization can be carried out simultaneously.If the heating temperature is kept too low, the reaction rate is slowed down, the purification time is slowed down and sterilization is not possible. On the other hand, if the heating temperature is maintained too high, the saturation at high temperature may cause the bubbles to occur extremely, and the settling time is slowed down by the cooling time, thereby increasing the purification time.

In this way, potassium hydroxide (KOH) and calcium chloride are sequentially added to the heated mixed immersion water while the order is not changed. The potassium hydroxide (KOH) promotes molecular motion so that it reacts more quickly. Is to be able to discolor again.

In this way, the additional mixed leachate Stir for 40 minutes to allow sufficient mixing, and allow it to stand for sufficient time for sufficient discoloration, disinfection and bleaching.

When the first purified water is purified secondly, wormwood is added. The wormwood removes the toxic and odor of chemicals, and the pH value is adjusted so that the phosphoric acid introduced in the third purification process can be easily reacted. It is to make it possible, and the alum is used in the 4th purification process, and it performs a purification operation again and can obtain purified water.

Specific embodiments of the present invention will be described in detail with reference to FIG. 1 in the accompanying drawings.

Note that the present invention or the purification method and apparatus are not limited by this embodiment.

In FIG. 1, the first, second, third, fourth, purifying parts 20, 30 and 40, including the first purifying part 10, are provided with the same apparatus as the first purifying part 10. Purified water is supplied from the filter section 5 of the side purification section to the stirrer 1 of the subsequent purification section. In the structure of the first purification section 10, heating means such as a binner is provided at the bottom of the stirrer 1. Phosphorus heating section (2) is provided and communicates with the sediment (3) through the valve (7) in the lower side of the stirrer (1), the valve (7) to discharge the sediment (8) below the sediment (3) -2) is provided with a sediment recovery tank (6), the precipitate (3) is connected to the reservoir (4) through the valve (7-1) and the filter unit 5 at the lower side of the reservoir (4) It is provided.

Purification method according to the present invention is purified through the steps of the first, second, third, fourth purification unit 10, 20, 30, 40 is provided with the above apparatus.

1000cc of leachate water, which is a process sample of the first purification unit 10, was put in the stirrer 7, mixed with 5 g of crude light, 0.5 g of alginic acid or sodium ichinate, and 6 g of bleached powder, and then the heating unit 2 was operated. 4 g of potassium hydroxide (KOH) and 20 g of calcium chloride were sequentially added to the mixture, and stirred for 30 minutes. Then, the valve 7 was opened to move to the precipitate 3, and left for 60 minutes.

During 60 minutes, the impurities settle downwards, the sediment (8) opens the valve (7-2), the lake to the sediment recovery tank (6) and the valve (7-1) of the sediment (3) by opening The wastewater from which the precipitate 8 is removed is moved to the storage container 4 and then passed through the filter part 5 to obtain the primary purified water 11.

During the process of the first purification unit 10, about 50cc is evaporated and the sediment of about 50cc is discharged to obtain the primary purified water 11 of about 900cc.

The process of the 2nd purification part 20, the 1st purification water 10 obtained by the 1st purification part 10 was put into the stirrer 1 of the 2nd purification part 10, 0.5g of magnesium carbonate, 0.2g of wormwood, After adding 2g of bleaching powder, start the heating section (2) to After raising to 10 g of calcium chloride and 2 g of potassium hydroxide (KOH) were added sequentially, followed by stirring for 30 minutes.

When stirring is completed, the valve 7 is opened to move to the settling material 3 and left for that time. While left to cool it slowly cools down and the remaining precipitate 8 precipitates.

After standing, the valve 7-2 is opened to discharge the remaining sediment 8, the valve 7-1 is opened and moved to the reservoir 4, and then passed through the filter unit 5 to purify the secondary purified water ( 21).

After the process of the third purification unit 30 and the process of the second purification unit 20, the second purified water 21 is 50 The 70cc decreases so that only about 830cc is supplied to the stirrer 1 of the third purification unit 30.

After adding phosphoric acid 0.05g and disinfectant 2g and stirring for 30 minutes, it is moved to the precipitate (3) side and left for 60 minutes. When the remaining precipitate (8) precipitates, it is recovered to the sediment recovery tank (6), and the remainder is moved to the reservoir (4) and passed through the filter section (5) to obtain a third purified water (31).

The third purified water 31 obtained through the process of the fourth purified portion 40 and the process of the third purified portion 30 is placed in the stirrer 1 of the fourth purified water 40 and the heating portion 2 is 100 running It is heated above.

The evaporated water generated by heating is collected and collected by any means, and the remainder is passed through the alum for 2 hours to obtain the final target water, that is, the fourth purified water 41.

During the purification process, the waste water gradually changed color and became transparent and colorless. Also, it was confirmed to be odorless. Purified water was discharged due to evaporation of water and discharge of sediment during the process. It was found to be somewhat smaller than the initial amount.

Particularly, the precipitate 8 obtained in the present invention is only agglomerated by alginic acid or sodium iodo acid, so only a very small amount is discharged.

As described above, according to the present invention, the prepurification process is 8 Because it is purified in about ten hours, the conventional three Compared to four days, the purification time is significantly shortened and sediment is generated less. In addition, colorless and odorless transparent purified water can be obtained, while the purification time can be shortened, the cost of purification and the waste of manpower can be reduced together.

Claims (2)

800 Joinlight 3 in 1200cc wastewater 7 g, alginic acid or sodium ichinate 0.2 0.8 g, bleach 3 9g mixed and 70g 95 Heated to potassium hydroxide (KOH) 2 6G and Calcium Chloride 15 25g each sequentially put 20 40 minutes after stirring It was left to stand for 80 minutes, precipitated and filtered to obtain the first purified water, and magnesium carbonate 0.2 in the first purified water. 0.8 g, wormwood 0.1 0.5 g, bleached powder 1 4 g of 75 95 Calcium chloride 5 after heating to 15 g potassium hydroxide (KOH) 1 4g and 20 Stir for 40 minutes to obtain a second purified water, 0.02 phosphoric acid in the second purified water 0.08 g, disinfectant 1 4g is added 20 Stir 40 minutes and 30 It was left to stand for 90 minutes, precipitated, and filtered to obtain a third purified water. After the above heating, the evaporated water is led to another container and collected. Purification method of malignant wastewater to pass alum for 150 minutes. The secondary purification unit 10 to add and purify the malignant waste water to obtain the primary purified water 11 and the secondary purified water by adding and purifying the secondary substance to the primary purified water 11. Second purification unit 20 to obtain (21) and the third purification unit 30 to add and purify the secondary material to the second purification water 21 to obtain the third purification water (31). ), And a fourth purification section 40 that sequentially adds and purifies auxiliary materials to the third purification water 31 to obtain purified water, and each of the first, second, third, and fourth purified waters. 10, 20, 30, and 40 are provided with a stirrer 1 equipped with a heating unit 2 on the lower side thereof so that the main material and the auxiliary material can be stirred while heating, and the agitator ( 1) is provided with one side of the precipitant (3) through the valve (7) in communication with the stirrer to stir the stirred agitated material in the stirrer (1), the valve on one side and the bottom of the precipitate (3) Via (7-1) (7-2) It is provided with a reservoir (4) and a sediment recovery container (6) to supply the purification material to the reservoir (4), to discharge the sediment (8) to the sediment recovery container (6), a filter on one side of the reservoir (4) Devices (5) are provided with devices for filtering and purifying the purifying material in the reservoir (4), respectively, each of the first, second, third purified water (10), (20), (30) The first, second, and third purified water (11), (21), and (31) are respectively discharged through the respective filter parts (5) of the following second, third, and fourth purification parts (20), ( 30), 40, malignant waste water purification treatment device can be supplied to each stirrer (1).