KR101628281B1 - System for waste water trust management - Google Patents

System for waste water trust management Download PDF

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KR101628281B1
KR101628281B1 KR1020150098307A KR20150098307A KR101628281B1 KR 101628281 B1 KR101628281 B1 KR 101628281B1 KR 1020150098307 A KR1020150098307 A KR 1020150098307A KR 20150098307 A KR20150098307 A KR 20150098307A KR 101628281 B1 KR101628281 B1 KR 101628281B1
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wastewater
unit
tank
inorganic
primary
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KR1020150098307A
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Korean (ko)
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임정문
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(주)우광하이텍
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

Abstract

The present invention relates to a micro bubble floating apparatus having a wastewater pretreatment unit, a primary neutralization unit, an aggregation / condensation unit, a first microbubble floatation unit and an organic microbubble floatation unit, a sludge reservoir, a floatation treatment tank, , A second micro-bubble floating unit, a flow storage tank, a biological reaction unit, an activated carbon reaction / microfiltration unit, an aggregation / dehydration unit and a reverse osmosis unit, And to efficiently process wastewater.

Figure R1020150098307

Description

[0001] System for waste water trust management [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment system, and more particularly, to a wastewater treatment system that can be safely treated and entrusted with treatment for wastewaters of various concentrations and various kinds.

In our daily lives, wastewaters of various types and concentrations are generated. These wastewaters are treated through physical, chemical and biological methods because they contain various contaminants.

Wastewater that is difficult to self-treat in wastewater generated during production process in each enterprise. Wastewater generated at the time of renovation of the own wastewater treatment plant, high concentration inorganic wastewater generated at the university biochemical experiment process, and wastewater generated during the recycling and reuse process of the wastewater may be treated in a separate wastewater treatment facility.

Conventional wastewater treatment plants were individually treated for specific wastewater, such as organic wastewater, acidic wastewater, alkaline wastewater, oxidant wastewater, and reduced wastewater, respectively. Therefore, conventional wastewater treatment facilities have a problem in that individual wastewater treatment facilities must be provided depending on the type of wastewater for each wastewater treatment. In addition, the conventional wastewater treatment facility has a problem that unexpected wastewater of a kind and concentration can not be stably treated in one facility.

On the other hand, the wastewater treatment facilities in Korea are mainly installed in the vicinity of the densely populated areas such as Busan, Ulsan and Incheon. Recently, however, Since there is a limitation due to the increase of logistics costs to utilize the facilities, the necessity for the expansion of the new wastewater treatment facility has come to the fore, and various researches on the new wastewater treatment system are under way.

Korean Patent Publication No. 10-2013-0003522 (entitled: Wastewater Treatment System, Disclosure Date: Jan. 9, 2013)

It is an object of the present invention to provide a wastewater treatment system which can be safely and efficiently treated with various concentrations and various wastewater treatments.

In order to solve the above problems, the present invention provides a wastewater treatment system for wastewater treatment, comprising: a wastewater pretreatment unit for selectively or simultaneously introducing inorganic wastewater and organic wastewater; A primary neutralization unit for neutrally neutralizing the inorganic wastewater via the wastewater pretreatment unit; An inorganic flocculation / condensation unit for separating foreign matter including at least one of solid matter, colloidal substance and heavy metal remaining in the inorganic wastewater passed through the primary neutralization unit into a lump form; An agglomeration / agglomeration unit having an organic agglomeration / agglomeration reaction tank for agglomerating foreign matters including at least one of solid matter, colloidal material and heavy metal remaining in the agglomerate / agglomeration unit; A first micro-bubble rising unit for separating floating sludge remaining in the inorganic wastewater passed through the inorganic flocculation / condensation unit; and a second micro-bubble floating unit for separating the floating sludge remaining in the organic wastewater via the organic flocculation / A micro bubble floating device having a floating unit; A sludge storage tank into which a first sludge separated from the inorganic flocculation / condensation section, a second sludge separated from the first microbubble floatation unit, and a third sludge separated from the organic microbubble floatation unit enter; A floatation treatment water tank into which floatation water separated from the first microbubble floatation unit flows; An evaporation concentration unit for separating foreign matters including dissolved solid matter remaining in the wastewater passed through the floatation treatment water tank; A wastewater post-treatment unit for removing impurities including at least one of an organic substance and an oxidizing substance remaining in the distillation wastewater via the evaporation / concentration unit; A second microbubble floatation unit for separating the floating sludge remaining in the wastewater passed through the wastewater treatment unit; A floating storage tank into which the floating water separated from the second microbubbling unit and the floating water separated from the organic microbubbles floating unit are introduced; A bioreactor unit for separating foreign matter including nitrogen component remaining in the wastewater passed through the flow rate storage tank, separating the microorganism mass in the form of sludge and transferring the microorganism mass to the sludge storage tank; An activated carbon reaction / microfiltration unit for separating residual foreign matter remaining in the wastewater passed through the biological reaction unit and transferring the separated foreign matter to the sludge storage tank and discharging the wastewater filtrate to the outside; And a flocculation / dehydration unit for coagulating / dehydrating the sludge introduced from the sludge storage tank to treat the dehydrated cake as waste and feeding the dehydrated filtrate to the flow rate storage tank.

The waste water treatment system further comprises a reverse osmosis unit for removing foreign matter including ions remaining in the wastewater via the activated carbon reaction / microfiltration unit, wherein the reverse osmosis treatment solution passed through the reverse osmosis unit contains And the concentrated water separated from the reverse osmosis unit can be fed back to the flotation treatment water tank.

An inorganic primary pretreatment unit for removing foreign matters remaining in the inorganic wastewater; an inorganic secondary pretreatment unit for pretreating the oxidized wastewater in the inorganic wastewater or pretreating the reducing wastewater in the inorganic wastewater; And an organic pretreatment unit for removing foreign matters remaining in the organic wastewater.

The inorganic flocculation / condensation unit includes a primary flocculation / condensation reaction tank for separating foreign matter remaining in wastewater passed through the primary neutralization unit into a lump form, and a flocculent foreign matter precipitated in the primary flocculation / condensation reaction tank A flocculation and sedimentation tank for forming the first first sludge and a secondary flocculation / condensation tank for separating the foreign substances remaining in the wastewater passed through the flocculation and sedimentation tank into a lump form.

Wherein the primary coagulation / condensation reaction tank includes an inorganic primary coagulation bath and an inorganic primary coagulation bath adjacent to and in communication with the inorganic primary coagulation bath, wherein the inorganic primary coagulation bath contains sulfuric acid alumina, The polymer flocculant is injected into the first flocculation tank to change the foreign matter remaining in the waste water flowing into the primary flocculation / condensation tank into a lump form.

Wherein the wastewater post-treatment unit includes a condensed water storage tank into which distilled wastewater flows via the evaporation and concentration unit, a secondary alkali reaction tank into which distilled wastewater flows via the condensed water storage tank, and distilled wastewater via the secondary alkali reaction tank, And a secondary neutralization unit into which the distillation wastewater via the secondary oxidation vessel flows.

Here, in the secondary alkali tank, caustic soda is injected by a hydrogen ion concentration meter. In the secondary oxidation tank, sodium chloride is injected by an oxidation-reduction electrometer. In the secondary neutralization unit, sulfuric acid Can be injected.

Wherein the biological reaction unit includes an anoxic tank into which waste water passed through the flow rate storage tank flows, aeration tank into which waste water passed through the anoxic tank flows, and a biological sedimentation tank into which waste water passed through the aeration tank is introduced, The nitrogen component contained in the anoxic tank and the aeration tank is denitrified. In the aeration tank, the organic matter and the ammonia nitrogen component are oxidized and decomposed by the aerobic microorganism. In the biological settling tank, the microorganism mass that is proliferated in the anoxic tank and the aeration tank may be precipitated.

Some of the microbial mass precipitated in the biological sedimentation tank is transported to the aeration tank in the form of activated sludge, and the nitrified nitrogen component in the aeration tank can be internally transported to the anoxic tank so that nitrogen is removed by the denitrifying microorganisms in the anoxic tank.

The activated carbon reaction / microfiltration unit includes a powder activated carbon reaction / microfiltration unit for providing a space in which contaminants of wastewater are adsorbed on the powdered activated carbon, a powdered activated carbon supplier for supplying the powdered activated carbon to the powder activated carbon reaction / microfiltration unit, And a fine filter having a separation membrane disposed on the powder activated carbon reaction / microfiltration unit to filter the wastewater after the contaminants are adsorbed on the powdered activated carbon.

The activated carbon reaction / microfiltration unit includes a sludge transfer pump for separating the powdery activated carbon adsorbed with contaminants and transferring the powdery activated carbon to the sludge storage tank, a microfiltration pump for transferring the filtered effluent filtered by the microfiltration filter to the outside, A first air injector for injecting air into the powder activated carbon reaction / microfiltration tank, and a second air injector for injecting air into the microfilter.

Wherein the evaporation and concentration unit includes a concentrator main body into which wastewater passed through the floatation treatment water tank flows, a boiler for heating the concentrator main body, and a drier for drying the evaporation drying liquid discharged from the concentrator main body, Dried dry solids can be treated as industrial waste.

The wastewater treatment system according to the present invention has an advantage that the wastewater can be safely and efficiently treated in one system even if inorganic wastewater and organic wastewater having various kinds and concentrations are selectively or simultaneously introduced.

Particularly, the activated carbon / microfiltration unit is used to adsorb the contaminants remaining in the wastewater with the powdered activated carbon, and at the same time, the wastewater after the contaminants have been filtered is subjected to microfiltration using a separation membrane disposed in the same space [ It has the advantage of being able to implement a compact configuration while meeting the criteria set forth in the Law on the Protection of Biological Conservation.

In addition, since the reverse osmosis unit is installed to remove foreign matters contained in the wastewater filtrate passed through the activated carbon reaction / microfiltration unit, there is an advantage that the wastewater can be discharged to the river more safely.

1 is a block diagram showing an embodiment of a waste water treatment system according to the present invention.
2 is a block diagram showing a pretreatment process of inorganic wastewater in the waste water treatment system of FIG.
FIG. 3 is a block diagram showing the steps from the pretreatment of wastewater to the evaporation and concentration process in the waste water treatment system of FIG. 1;
FIG. 4 is a block diagram showing the process from the evaporation concentration process of wastewater to the process of using the first micro bubble floating unit in the wastewater treatment system of FIG. 1;
FIG. 5 is a block diagram illustrating a process of pre-treating an organic wastewater and a process of using an organic micro-bubble floating unit in the wastewater treatment system of FIG. 1;
FIG. 6 is a block diagram illustrating a process in which wastewater passing through the organic micro-bubble floating unit and wastewater passing through the second micro-bubble floating unit in the wastewater treatment system of FIG.
FIG. 7 is a detailed view showing the configuration of an activated reaction / microfiltration unit provided in the waste water treatment system of FIG. 1; FIG.

Hereinafter, preferred embodiments of the present invention in which the above-mentioned problems to be solved can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names and the same symbols are used for the same configurations, and additional description therefor will be omitted below.

1 to 7, an embodiment of a waste water treatment system according to the present invention will be described below.

The wastewater treatment system comprises a micro-bubble floating device having a wastewater pretreatment unit, a primary neutralization unit 50, a coagulation / condensation unit, a first micro-bubble floating unit 100 and an organic micro-bubble floating unit 45, The microfiltration unit 250, the floatation treatment tank 110, the evaporation concentration unit 120, the waste water post-treatment unit E, the second microbubbles floating unit 170, the flow rate storage tank 180, the biological reaction unit F, / Microfiltration unit 220, coagulation / dehydration unit 260 and reverse osmosis unit 240.

In the wastewater pre-treatment unit, inorganic wastewater and organic wastewater (5) are selectively or simultaneously introduced and pretreated. The inorganic wastewater includes acidic wastewater (1), alkaline wastewater (2), oxidative wastewater (3), and reduced wastewater (4).

The pretreatment unit may include an inorganic primary pretreatment unit (A) for removing foreign matters remaining in the inorganic wastewater, and a pretreatment unit for pretreating the oxidative wastewater (3) in the inorganic wastewater or pretreating the reducing wastewater (4) And an organic pre-treatment unit C for removing foreign matters remaining in the organic wastewater 5. The organic pre-

Specifically, the inorganic primary pre-processing unit (A) comprises a first screen and a settling tank (11) for removing foreign substances remaining in the acidic wastewater (1), and a first screen and a settling tank And an acidic wastewater storage tank (21) for storing wastewater passed through.

The inorganic primary pre-treatment unit A includes a second screen and a settling tank 12 for removing foreign substances remaining in the alkaline wastewater 2, And an alkaline wastewater storage tank 22 for storing a wastewater.

The inorganic primary pre-processing unit A includes a third screen for removing foreign matters remaining in the oxidized wastewater 3 and a settling tank 13 and a third screen for removing foreign substances remaining in the oxidized wastewater 3 via the third screen and the settling tank 13 And an oxidant-based wastewater storage tank 23 for storing wastewater.

The inorganic primary pre-processing unit A includes a fourth screen and a settling tank 14 for removing foreign substances remaining in the reducing system wastewater 4, And a reducing system wastewater reservoir 24 for storing a wastewater.

The inorganic secondary pre-treatment unit (B) includes a primary alkali tank (33) and a primary oxidation tank (43) for pretreating components such as CN - contained in the oxidative wastewater.

In the primary alkaline reaction tank 33, caustic soda is automatically injected by a hydrogen ion concentration exponent measuring instrument. In the primary oxidation tank 43, sodium hypochlorite is automatically injected by an oxidation-reduction electrometer.

The inorganic secondary pre-treatment section (B) includes a primary acid reaction tank (34) and a primary reduction tank (44) for pretreating components such as Cr 6 + contained in the reducing system wastewater.

Sulfuric acid is automatically injected by the hydrogen ion concentration exponent in the primary acid reaction tank 34, and sodium sulfite is automatically injected by the redox potential meter in the primary reduction tank 44.

As a result, when the acidic wastewater 1 flows into the acidic wastewater storage tank 21 through the first screen and the needle settling tank 11, the acidic wastewater is transferred to the primary neutralization unit 50 .

When the alkaline wastewater 2 flows into the alkaline wastewater storage tank 22 through the second screen and the settling tank 12, the alkaline wastewater is transferred to the primary neutralization unit 50.

When the oxidizing wastewater 3 flows into the oxidizing wastewater storage tank 23 via the third screen and the settling tank 13 and the wastewater passed through the oxidizing wastewater storage tank 23 flows into the oxidizing wastewater storage tank 23, The alkali neutralization tank 33 and the primary oxidation tank 43 in this order to the primary neutralization unit 50.

When the reducing wastewater 4 flows into the reducing-system wastewater storage tank 24 through the fourth screen and the settling tank 14, the wastewater via the reducing-system wastewater storage tank 24 flows into the reducing- Is transferred to the primary neutralization unit (50) while passing through the primary acid reaction tank (34) and the primary reduction tank (44).

That is, the inorganic wastewater, that is, the acidic wastewater 1, the alkaline wastewater 2, the oxidative wastewater 3, and the reduced wastewater 4 all collect in the primary neutralization unit 50 .

In the primary neutralization unit 50, sulfuric acid and caustic soda are automatically injected by an oxidation-reduction potentiometer, and the wastewater is neutrally neutralized.

The organic pre-treatment unit C includes an organic screen for removing foreign substances remaining in the organic wastewater 5 and a settling tank 15 and an organic system for storing wastewater via the organic screen and the settling tank 15. And a waste water storage tank 25.

When the organic wastewater (5) flows into the organic wastewater storage tank (25) through the organic screen and the settling tank (15), the wastewater passed through the organic wastewater storage tank (25) (35).

The flocculation / condensation unit includes an inorganic flocculation / condensation unit D for separating foreign matters including at least one of solid matter, colloidal substance and heavy metal remaining in the inorganic wastewater passed through the primary neutralization unit 50 into a lump form And an organic flocculation / condensation reaction tank 35 for separating foreign matter including at least one of solid matter, colloidal substance and heavy metal remaining in the organic wastewater via the organic pretreatment unit (C) into a lump form do.

The inorganic flocculation / condensation section (D) comprises a primary flocculation / condensation reaction tank (60) for separating foreign matters remaining in wastewater passed through the primary neutralization unit (50) into a lump form, and a primary flocculation / A coagulation sedimentation tank 70 in which a lumpy foreign matter is precipitated in the reaction tank 60 to form a first sludge and a secondary aggregation for separating the foreign matter remaining in the wastewater passed through the flocculation and sedimentation tank 70 into a lump form / Condensation tank (90).

The inorganic flocculation / condensation section (D) may further include a flocculation / sedimentation treatment tank (80) disposed between the flocculation tank (70) and the secondary flocculation / condensation tank (90).

The primary agglomeration / agglomeration tank 60 may include an inorganic primary agglomeration tank (not shown) and an inorganic primary agglomeration tank (not shown) disposed adjacent to the inorganic primary agglomeration tank.

The alumina sulfate flows into the inorganic primary aggregation tank and the polymeric flocculant is injected into the inorganic primary condensation tank to change the foreign matter remaining in the wastewater flowing into the primary flocculation / have.

The agglomerated mass in the primary agglomeration / agglomeration tank 60 flows into the agglomerated sedimentation tank 70 in a gravity flow and is settled on the bottom of the agglomeration sedimentation tank 70 due to the specific gravity difference.

The first sludge settled in the coagulation sedimentation tank 70 is transferred to the sludge storage tank 250 and the supernatant of the flocculation and sedimentation tank 70 is transferred to the flocculation and sedimentation treatment tank 80.

The wastewater transferred to the flocculation and sedimentation treatment tank 80 flows into the second flocculation / condensation tank 90 and is subjected to the same procedure as in the first flocculation / condensation tank 60. That is, in the secondary agglomeration / condensation tank (90), solid matter, colloidal substance, heavy metal and mineral oil remaining in the coagulated sedimentation treated wastewater in the primary agglomeration / condensation tank (60) are separated into lumps do.

The details of the secondary agglomeration / agglomeration reaction tank 90 are substantially the same as the detailed construction of the primary agglomeration / agglomeration reaction tank 60, and a description thereof will be omitted. The inorganic wastewater via the second agglomeration / condensation tank (90) flows into the first microbubbles floating unit (100).

The sludge settled in the secondary flocculation and sedimentation tank is moved to the sludge storage tank 250, and the sludge settled in the secondary flocculation / sedimentation tank is moved to the sludge storage tank 250, The supernatant of the secondary flocculation and sedimentation tank is transferred to the secondary coagulation sedimentation treatment tank and the inorganic wastewater transferred to the secondary flocculation and sedimentation treatment tank may be transferred to the first microbubble flocculation unit 100.

Meanwhile, since the organic flocculation / condensation tank 35 has substantially the same structure as the first flocculation / condensation tank 60, its detailed structure is omitted. The wastewater via the organic flocculation / condensation tank 35 flows into the organic microbubble floatation unit 45.

The present invention is not limited to this, and an organic flocculation and sedimentation tank may be provided at the rear end of the organic flocculation / condensation tank 35. The sludge settled in the organic flocculation tank may be moved to the sludge storage tank 250, The organic-based wastewater transferred to the organic coagulated sedimentation treatment tank may be introduced into the organic-based microbubble floatation unit 45.

The first micro-bubble floating unit 100 separates the floating sludge remaining in the inorganic coagulation / condensation portion, more specifically, the inorganic wastewater via the secondary coagulation / condensation reaction tank 90.

The floating sludge separated from the first microbubbling unit 100, that is, the second sludge is moved to the sludge storage tank 250, and the floatation water treated in the first microbubble floating unit 100 is moved And then flows into the treatment water tank 110.

The organic micro-bubble floating unit 45 separates the floating sludge remaining in the organic wastewater passed through the organic coagulation / condensation reaction tank 35.

The floatation sludge separated from the organic microbubble floatation unit 45, that is, the third sludge is moved to the sludge storage tank 250, and the floatation water treated in the organic microbubble floatation unit 45 flows into the flow- 180).

Meanwhile, the wastewater flowing into the floatation treatment water tank 110 flows into the evaporation concentration unit 120. At this time, not only the floatation water flowing in the first micro-bubble floating unit (100) but also the concentrated water separated from the reverse osmosis unit (240) flows into the floatation treatment water tank (110).

 The evaporation and concentration unit 120 includes a concentrator main body (not shown) to which waste water passed through the floatation treatment water tank 110 flows, a boiler (not shown) to heat the concentrator main body, And a dryer for drying the drying liquid. Of course, the evaporation and concentration unit may include a heat exchanger, a condenser, a cooling tower, a circulation pump, and a vacuum pump. The evaporation-drying liquid contains a concentrated high-concentration inorganic salt.

Most of the heavy metals are removed from the wastewater flowing into the floatation treatment water tank 110. However, a small amount of heavy metal remains in the wastewater treatment tank 110, and the dissolved total solids (TDS) This dissolved solid material is removed by the evaporation and concentration unit 120.

The distillation wastewater via the evaporation and concentration unit 120 flows into the wastewater post-treatment unit E, and the dried solid dried in the dryer is treated as industrial wastes.

The wastewater post-treatment unit E removes foreign matters including at least one of organic materials and oxidizing materials remaining in the distillation wastewater via the evaporation and concentration unit 120.

The wastewater post-treatment unit E includes a condensed water storage tank 130 through which the distilled wastewater flows via the evaporation and concentration unit 120 and a secondary alkaline reaction tank 140 through which the distilled wastewater flows via the condensed water storage tank 130 A secondary oxidation unit 150 into which the distillation wastewater via the secondary alkali tank 140 flows and a secondary neutralization unit 160 into which the distillation wastewater via the secondary oxidation tank 150 flows ).

In the secondary alkaline reaction tank 140, caustic soda is injected by a hydrogen ion concentration meter. In the secondary oxidation tank 150, sodium hypochlorite is injected by an oxidation-reduction electrometer. In the secondary neutralization unit 160, Sulfuric acid is injected by the hydrogen ion concentration meter to treat the distillation wastewater.

The distillation wastewater via the second neutralization unit 160 flows into the second microbubbles floating unit 170. The second micro-bubble floating unit 170 separates the floating sludge remaining in the wastewater after passing through the wastewater post-treatment unit, that is, the secondary neutralization unit 160.

The floatation water separated from the second microbubble floatation unit 170 flows into the flow storage tank 180 and the floating sludge separated from the second microbubble floatation unit 170 flows into the sludge storage tank 250 Lt; / RTI >

As a result, the sludge storage tank 250 is provided with a first sludge separated from the inorganic flocculation / condensation portion, that is, the flocculation and sedimentation tank 70, a second sludge separated from the first microbubbles floating unit 100, A third sludge separated from the organic micro-bubble floating unit 45, a floating sludge separated from the second micro-bubble floating unit, sludge generated in the biological reaction unit, and a sludge generated in the activated carbon reaction / microfiltration unit All of the sludge is introduced.

The sludge introduced into the sludge storage tank 250 is transferred to the flocculation / dehydration unit 260.

The coagulation / dehydration unit 260 coagulates / dehydrates the sludge introduced from the sludge storage tank 250, processes the dehydrated cake waste, and feeds the dehydrated filtrate to the flow storage tank 180.

Accordingly, the flow rate of the organic wastewater via the organic micro-bubble floating unit 45, the inorganic wastewater via the second micro-bubble floating unit 170, the flocculation / dehydration unit 260, The wastewater passing through the pipe is introduced together.

As a result, even if inorganic wastewater and organic wastewater having various kinds and concentrations are selectively or simultaneously introduced, the wastewater can be treated safely and efficiently in one system.

The wastewater stored in the flow rate storage tank 180 is transferred to the bioreaction unit F. [ The bioreactor unit F separates foreign substances including nitrogen components remaining in the wastewater passed through the flow rate storage tank 180, separates the microorganism masses in the form of sludge, and transfers the microorganism masses to the sludge storage tank 250.

 The biological reaction unit F includes an anoxic tank 190 into which wastewater flows via the flow rate storage tank 180, aeration tank 200 into which wastewater via the anoxic tank 190 flows, And a biological sedimentation tank 210 into which wastewater flows via the biological sedimentation tank 210.

In the anoxic tank 190, the nitrogen component contained in the wastewater is denitrified. In the aeration tank 200, organic matter and ammonia nitrogen components are oxidized and decomposed by aerobic microorganisms. In the biological settlement tank 210, And the augmented microorganism mass in the aeration tank 200 is settled.

The nitrified nitrogen component in the aeration tank 200 is internally transported to the anoxic tank 190 so that nitrogen is removed by the denitrifying microorganisms in the anoxic tank 190.

Some of the microbial mass precipitated in the biological sedimentation tank 210 is transferred to the aeration tank 200 in the form of activated sludge and the remaining surplus sludge of the microbial mass is transferred to the sludge storage tank 250, 210 enter the activated carbon reaction / microfiltration unit 220.

The activated carbon reaction / microfiltration unit 220 separates the residual foreign matter remaining in the wastewater via the biological reaction unit F, that is, the wastewater passed through the biological sedimentation tank 210, using activated carbon, (250), and the waste water filtrate is transferred to the outside, that is, the filtration treatment water tank (230).

Specifically, the activated carbon reaction / microfiltration unit 220 includes a powder activated carbon reaction / microfiltration unit 221 for providing a space in which pollutants of wastewater are adsorbed on the powdered activated carbon, and a powder activated carbon reaction / microfiltration unit 221 A powdered activated carbon supply device 222 for supplying the powdered activated carbon; a fine activated carbon filter 221 disposed on the powder activated carbon reaction / microfiltration tank 221 for filtering the wastewater after the polluted matter is adsorbed on the powdered activated carbon; And a filter 223.

Here, the activated carbon powder adsorbs pollutants of the wastewater, that is, residual organic and inorganic substances, chromogenic substances, refractory substances and trace heavy metals, on the powder activated carbon reaction / filtration tank.

The fine filter 223 filters the activated carbon powder with the contaminants and separates the filtered activated carbon, thereby discharging the filtered water from the purified water to the filtering water tank 230. Although the fine filter 223 filters the activated carbon powder with the contaminants attached thereto, the waste water filtrate of the filtration treatment water tank 230 flows into the reverse osmosis unit 240, thereby causing clogging of the reverse osmosis unit .

The activated carbon reaction / microfiltration unit 220 includes a sludge transfer pump 225 for separating the powdery activated carbon adsorbed with contaminants and transferring the activated carbon to the sludge storage tank 250, A first air injector 226 for injecting air into the powder activated carbon reaction / microfiltration tank 221; a microfiltration unit 223 for injecting air into the microfiltration unit 223; And a second air injector 227 for injecting air into the interior of the housing.

The polluted material remaining in the wastewater by the powdered activated carbon is adsorbed on the activated carbon powder and the wastewater after the pollutant is filtered is microfiltered using a separation membrane disposed in the same space, It is possible to implement a compact configuration while satisfying the criteria defined in "

Here, the pollutants are adsorbed on the activated carbon powder, so that the activated carbon powder adsorbed the pollutants has an unbalanced shape and has a volume larger than that of the filtration media of the separation membrane, so that the filtration holes of the separation membrane are not blocked. The activated carbon powder to which the contaminants are adsorbed is transferred to the sludge storage tank 250 in the form of sludge.

The reverse osmosis unit 240 removes foreign matter including ions remaining in the wastewater passing through the filtration treatment water tank 230. The reverse osmosis treatment solution passed through the reverse osmosis unit 240 is discharged to an external stream, and the concentrated water separated from the reverse osmosis unit 240 is fed back to the floatation treatment tank 110.

The reverse osmosis unit 240 removes foreign matters contained in the wastewater filtrate passed through the activated carbon reaction / microfiltration unit 220 so that the wastewater can be discharged to the stream more safely.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention as claimed in the claims. And such variations are within the scope of the present invention.

21: Acidic wastewater storage tank 22: Alkali waste water storage tank
23: Oxidized wastewater storage tank 24: Reduction wastewater storage tank
25: Organic wastewater storage tank 33: Primary alkali tank
34: primary acid bath 35: organic flocculation / condensation bath
43: primary oxidation tank 45: organic micro bubble floating unit
50: primary neutralization unit 60: primary coagulation / condensation tank
70: Coagulation sedimentation tank 80: Coagulation sedimentation treatment tank
90: Secondary coagulation / condensation tank 100: First micro bubble floating unit
110: float treatment tank 120: evaporation concentration unit
130: Condensate storage tank 140: Secondary alkali tank
150: Second oxidation tank 160: Second neutralization unit
170: second micro bubble floating unit 180: flow storage tank
190: anoxic tank 200: aeration tank
210: biological sedimentation tank 220: activated carbon reaction / microfiltration unit
230: Filtration treatment tank 240: Reverse osmosis unit
250: sludge storage tank 260: flocculation / dehydration unit
A: Inorganic primary pretreatment part B: Inorganic secondary pretreatment part
C: organic pretreatment part D: inorganic aggregation / condensation part
E: Wastewater post-treatment part F: Bioreaction unit

Claims (10)

1. A wastewater treatment system for treating wastewater, comprising:
A wastewater pretreatment unit in which inorganic wastewater and organic wastewater are selectively or simultaneously introduced and pretreated;
A primary neutralization unit for neutrally neutralizing the inorganic wastewater via the wastewater pretreatment unit;
An inorganic flocculation / condensation unit for separating foreign matter including at least one of solid matter, colloidal substance and heavy metal remaining in the inorganic wastewater passed through the primary neutralization unit into a lump form; An agglomeration / agglomeration unit having an organic agglomeration / agglomeration reaction tank for agglomerating foreign matters including at least one of solid matter, colloidal material and heavy metal remaining in the agglomerate / agglomeration unit;
A first micro-bubble rising unit for separating floating sludge remaining in the inorganic wastewater passed through the inorganic flocculation / condensation unit; and a second micro-bubble floating unit for separating the floating sludge remaining in the organic wastewater via the organic flocculation / A micro bubble floating device having a floating unit;
A floatation treatment water tank into which floatation water separated from the first microbubble floatation unit flows;
An evaporation concentrating unit for separating foreign matter including the dissolved solid matter remaining in the wastewater passed through the floatation treatment water tank and discharging the dried dry solids as industrial waste;
A wastewater post-treatment unit for removing impurities including at least one of an organic substance and an oxidizing substance remaining in the distillation wastewater via the evaporation / concentration unit;
A second microbubble floatation unit for separating the floating sludge remaining in the wastewater passed through the wastewater treatment unit;
A first sludge separated from the inorganic flocculation / condensation unit, a second sludge separated from the first microbubbles floatation unit, a third sludge separated from the organic microbubbles floatation unit, A sludge storage tank into which floating sludge separated from the sludge is introduced;
A floating storage tank into which the floating water separated from the second microbubbling unit and the floating water separated from the organic microbubbles floating unit are introduced;
A bioreactor unit for separating foreign matter including nitrogen component remaining in the wastewater passed through the flow rate storage tank, separating the microorganism mass in the form of sludge and transferring the microorganism mass to the sludge storage tank;
An activated carbon reaction / microfiltration unit for separating residual foreign matter remaining in the wastewater passed through the biological reaction unit and transferring the separated foreign matter to the sludge storage tank and discharging the wastewater filtrate to the outside;
A flocculation / dehydration unit for flocculating / dehydrating the sludge introduced from the sludge storage tank, treating the dehydrated cake as industrial waste, and feeding the dehydrated filtrate to the flow storage tank;
A filtration treatment water tank into which wastewater via the activated carbon reaction / microfiltration unit flows; And,
And a reverse osmosis unit for removing foreign matters including ions remaining in the wastewater passed through the filtration treatment water tank, wherein the reverse osmosis treatment solution passed through the reverse osmosis unit is discharged to an external stream, The separated concentrated water is fed back to the floatation treatment water tank,
An inorganic primary pretreatment unit for removing foreign matters remaining in the inorganic wastewater; an inorganic secondary pretreatment unit for pretreating the oxidized wastewater in the inorganic wastewater or pretreating the reducing wastewater in the inorganic wastewater; An organic-based pretreatment unit having an organic screen for removing foreign matters remaining in the organic wastewater and a needle set,
The inorganic primary pre-treatment section includes respective screens and a settling tank for individually removing foreign matters remaining in the acidic wastewater, the alkaline wastewater, the oxidized wastewater, and the reduced wastewater in the inorganic wastewater,
Wherein the inorganic secondary pre-treatment unit comprises a primary alkali reaction tank and a primary oxidation tank for treating a component containing cyanide ion (CN < - >) contained in the oxidative wastewater and a hexavalent chromium (Cr 6+ And a primary reduction tank for treating the component including the primary reduction reaction tank and the primary reduction reaction tank. delete delete The method according to claim 1,
The inorganic flocculation / condensation unit includes a primary flocculation / condensation reaction tank for separating foreign matter remaining in wastewater passed through the primary neutralization unit into a lump form, and a flocculent foreign matter precipitated in the primary flocculation / condensation reaction tank A flocculation / sedimentation tank for forming the first sludge; and a secondary flocculation / condensation tank for separating the foreign substances remaining in the wastewater passed through the flocculation and sedimentation tank into a lump form. 5. The method of claim 4,
Wherein the primary agglomeration / agglomeration reaction tank includes an inorganic primary agglomeration tank and an inorganic primary agglomeration tank adjacently disposed in communication with the inorganic primary agglomeration tank,
Characterized in that alumina sulfate flows into the inorganic primary aggregation tank and the foreign matter remaining in the wastewater flowing into the primary agglomeration / condensation tank is changed into a lump shape with the introduction of the polymer flocculant into the inorganic primary flocculation tank Waste water treatment system. The method according to claim 1,
Wherein the wastewater post-treatment unit includes a condensed water storage tank into which distilled wastewater flows via the evaporation and concentration unit, a secondary alkali reaction tank into which distilled wastewater flows via the condensed water storage tank, and distilled wastewater via the secondary alkali reaction tank, And a secondary neutralization unit into which the distillation wastewater via the secondary oxidation vessel flows,
In the secondary alkaline reaction tank, caustic soda is injected by a hydrogen ion concentration meter. In the secondary oxidation vessel, sodium chloride is injected by an oxidation-reduction electrometer. In the secondary neutralization unit, sulfuric acid is injected by a hydrogen ion concentration meter Wherein the waste water treatment system comprises: The method according to claim 1,
Wherein the biological reaction unit includes an anoxic tank into which wastewater passed through the flow rate storage tank flows, aeration tank into which wastewater via the anoxic tank flows, and a biological sedimentation tank into which wastewater via the aeration tank flows,
In the anoxic tank, the nitrogen component contained in the wastewater is denitrified. In the aeration tank, the organic matter and the ammonia nitrogen component are oxidized and decomposed by aerobic microorganisms. In the biological settling tank, the microorganism mass, which is proliferated in the anoxic tank and the aeration tank,
Wherein a part of the microbial mass precipitated in the biological sedimentation tank is transported to the aeration tank in the form of activated sludge and the nitrogen component nitrified in the aeration tank is internally transported to the anoxic tank so that nitrogen is removed by the denitrifying microorganism in the anoxic tank Wastewater treatment system. The method according to claim 1,
The activated carbon reaction / microfiltration unit includes a powder activated carbon reaction / microfiltration unit for providing a space in which contaminants of wastewater are adsorbed on the powdered activated carbon, a powdered activated carbon supplier for supplying the powdered activated carbon to the powder activated carbon reaction / microfiltration unit, And a microfilter disposed on the powder activated carbon reaction / microfiltration unit and having a separation membrane for filtering the wastewater after the pollutant is adsorbed on the activated carbon powder. 9. The method of claim 8,
The activated carbon reaction / microfiltration unit includes a sludge transfer pump for separating the powdery activated carbon adsorbed with contaminants and transferring the powdery activated carbon to the sludge storage tank, a microfiltration pump for transferring the filtered effluent filtered by the microfiltration filter to the outside, A first air injector for injecting air into the powder activated carbon reaction / microfiltration tank, and a second air injector for injecting air into the microfilter. The method according to claim 1,
Wherein the evaporation and concentration unit includes a concentrator main body into which wastewater passed through the floatation treatment water tank flows, a boiler for heating the concentrator main body, and a drier for drying the evaporation drying liquid discharged from the concentrator main body Waste water treatment system.
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KR101795694B1 (en) 2017-07-11 2017-12-01 남궁엽 Ro plant treatment apparatus of gymnasium waste-water and method thereof
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CN111606455A (en) * 2020-06-09 2020-09-01 王大祥 A inorganic waste liquid stage treatment device for laboratory
CN113072212A (en) * 2021-04-01 2021-07-06 大唐环境产业集团股份有限公司 High-calcium desulfurization wastewater self-softening pretreatment system and process

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