KR20000012414A - The method of purification of sewage using urethan foamed screen - Google Patents

Abstract

PURPOSE: A method for purifying anaerobic and aerobic foam contact type wastewater is provided to have a space for living anaerobic and aerobic bacterium and fill an urethane foam determining the composite living factors of biofacies. CONSTITUTION: A purification tank(100) for purifying an anaerobic and aerobic foam contact type wastewater comprising:an aeration tank(10) for separating impurities or solid organic matters contained in daily wastewater and degrading the separated impurities using anaerobic bacterium; a flow rate control tank(20) having an air agitator and an air lift pipe; an aeration contact tank(30) having a separation pipe for denitrification, a diffusion agitator, and a sludge drawer member; first(40-1) and second contact aeration chambers(40-2) containing urethane foam attached to a plastic-based contact member; an agglomeration tank(50); a sedimentation tank(60); a stabilization tank(70); a self drawer for returning the sludge to a sludge storage tank; and a sterilization tank(80).

Description

Anaerobic and aerobic concurrent foam membrane contact sewage purification method {THE METHOD OF PURIFICATION OF SEWAGE USING URETHAN FOAMED SCREEN}

The present invention relates to anaerobic and aerobic parallel foam membrane contact sewage purification method, in particular, by reversing anaerobic microorganisms in the septic tank to provide a high efficiency to clean the organic matter as well as suspended solids, nitrogen, phosphorus and easy to maintain By further increasing the function of the treated water to provide a greatly improved efficiency of the purification function.

Conventional wastewater treatment facilities have been developed with various methods and purification systems having different characteristics. However, due to the rapid regulation of water pollution, acceleration is required for the development of new products with high efficiency.

However, the sewage discharged in relation to the basic life of human beings contains more organic matter and insoluble detergent contaminants, so that the purification rate is low in the existing purification facilities that cannot realistically cope with the characteristics of the diversified wastewater. Factors contaminating the water quality and inadequate management techniques that have flowed into the river have proved only 70 ~ 80% of efficiency in the design purification efficiency.

In particular, the conventional purification method has a single function of biofilm inherent in the process of sewage treatment, which has a strong bias characteristic of anaerobic or arc machine, and adds separate separation function. (B) Due to the consistent simplicity of the contact materials during overattachment, the effluent water quality variation was severe and the curvature had a significant effect on the sewage treatment efficiency.

In addition, the plastic media and saran green textiles have a problem of not being able to diversify the biofilm function due to their simple molding, and have a weak response to the influx of purification inhibitors or changes in the purification environment. With the contradictions that have to elapse by months, it remains a realistic overcoming challenge in the contribution of water purification.

The present invention has been made to solve the above problems, for the purpose of filling the biofilm contact phase that can anaerobic and aerobic microorganisms inhabited in a high density range with the properties of each room and combined the contact characteristics of a single characteristic Addition of coagulation and stabilization functions to organic processes as well as post-process to assist in increasing dephosphorization, denitrification and sedimentation functions by converting to biological function of characteristics. Protects treated water from foreign substances and residual organic matters immediately before discharge and continuously purifies rate The purpose is to provide a further increase.

1-Top schematic cross-sectional view of the present invention

2-A cross-sectional schematic diagram of the line A-A of FIG.

Figure 3-Schematic cross section B-B of Figure 1

4-aa cross-sectional schematic diagram of FIG.

5-b-b cross-sectional schematic view of FIG.

Figure 6-schematic cross-sectional view taken along line c­c of FIG.

7-D schematic diagram of the cross-section

Figure 8-schematic cross-sectional view of the line e­e of FIG.

Figure 9-exploded perspective view of the aerobic contact tube applied to the present invention

10-Top view of FIG.

Figure 11-Side view of foam membrane contact agent applied to the present invention

12-Perspective view of a mesh-type filtrate provided in the flocculation tank of the present invention

Figure 13-Perspective view of the fibrous media installed in the stabilizer of the present invention

The present invention for achieving the above object is anaerobic decomposition that can be decomposed by the intrinsic anaerobic microorganisms in the front end of the septic tank to separate the contaminants or solid organic matter contained in the living sewage by gravity difference and to store the stored and stored contaminants for a period of time And a flow regulating tank having a characteristic conversion air stirrer for storing and intermixing the sewage introduced after anaerobic decomposition from the anaerobic digestion tank for a period of time, and an air lift conveying pipe for controlling the outflow load from the flattening to the averaging; Anaerobic biofilm of brush media for anaerobic biofilm in the center of a number of anaerobic contact tubes, organic material is slowly circulated through the holes and pores in the upper part of the anaerobic contact tube inside the anaerobic biomaterial dephosphorization, denitrification Separation pipe to proceed, the periphery of sewage in the outer peripheral surface of the separation pipe Biomembrane membrane, which is a non-woven fabric that controls the structure of the cylinder, has an outer shape of the biomembrane membrane, which is a ribbon-shaped nonwoven fabric that decomposes organic matter by activating aerobic microorganisms, Slowly circulating through the hole while the anaerobic contact tube inside the anaerobic contact tube dephosphorization, denitrification proceeds to the center of the anaerobic biofilm and the sludge is accumulated in the lower sludge storage chamber by gravity, the sludge in the sludge storage chamber An anaerobic contacting tank having a sludge withdrawing member for U-turn to a sludge storage tank partitioned by an anaerobic digestion tank wall, and a flexible urethane foaming agent is foamed and attached to the plastic contact material after the anaerobic contacting tank, The coexistence of aerobic on the external contact material The urethane foaming agent is foamed and fixed in a range where a certain space is formed in the contact aeration tanks 1 and 2 chambers for improving the flow rate and maintaining the biological phase in the air gap of the foam membrane and the fiber media having the shape of the fiber media fixed phase after the contact aeration chamber. An aerobic layer inside and an aerobic layer on the outside, and the function to diversify the biomass and the aeration-free coagulation function induce self-assembly of the composite biofilm to increase the cohesive force, and the surplus aggregated after this coagulation tank Rectifier tube for rectifying sludge, hop bar for collecting sediment agglomerate at the bottom, sediment extractor and final treated water for turning sediment agglomerate into the sludge storage tank by this hop bar are passed through a wallware with reduced hydraulic load Cultivation of microorganisms in protozoan and episodic systems by suspension filling of the outflowing sedimentation tank and the mesh-type fiber filter media after this sedimentation tank A stable tank obtained from the biological final treatment water and a lower part of the stabilizer are self-supporting extractors for causing a small amount of self-supporting organic matter or suspended matter to decompose in the final stage and aggregate and not go to the lower part. After stabilization tank, it is divided into sterilization discharge tank that manages final treatment water and disinfection sterilization.

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

The septic tank 100 includes an anaerobic digestion tank 10, a flow rate adjusting tank 20, an aerobic contacting tank 30, a contact aeration tank 1 chamber 40-1, a contact aeration tank 2 chamber 40-2, and a coagulation tank 50. , Sedimentation tank (60), stabilization tank (70), disinfection discharge tank (80) is divided into, especially the organic matter stored in the aggressor contact tank (30) and sedimentation aggregate and sludge of the stabilization tank (70) It can be partitioned into a sludge storage tank (90) to be located at the tip of the septic tank (10) to be recycled.

In the anaerobic digestion tank 10, the sewage introduced through the inlet pipe 11 is distributed and transported to both sides by branch pipes 11a and 11b on both sides, and diffuses into the water to collect contaminants of the lower precipitate and the upper scum layer. It enters without disturbing. At this time, the solid organic matter and the contaminants are selected by the weight of the flotation or sediment, and the denitrification process is also carried out by the decomposition of organic matter and the anaerobic function by the anaerobic microorganisms present therein. The diesel oil flows into the flow adjusting tank 20.

Sewage flowed into the flow adjusting tank 20 constitutes an air stirrer 21 for converting agitation and anaerobic characteristics into an anaerobic system or an aerobic system, and an air lift transfer pipe 22 for adjusting the flow rate of the inflow flow to average. Inflow control and quality of flow characteristics are averaged.

The anaerobic contacting tank 30, which is the main treatment process of the organic matter, is largely divided into an anaerobic parallel aeration chamber 30-1 at the top and a sludge storage chamber 30-2 at the bottom, and an anaerobic parallel aeration chamber 30 at the top. -1) A plurality of anaerobic contact tubes 32 are placed inside, and the anaerobic biofilm 33 of the brush media for the anaerobic biofilm layer in the center of the anaerobic contact tube 32 is separated with the pores 34a. It is fitted in the hollow 34b of the pipe 34, and the biological separation membrane 35, which is a nonwoven material for controlling the flow structure of sewage, is fitted on the outer circumferential surface of the separation pipe 34, and aerobic in the form of a ribbon-shaped nonwoven fabric in its shape. The biofilm 36 is fixed to the fixing bar 37 with a bolt 38, and a sludge outlet 34c is formed below the hollow tube 34b of the separation pipe 34 so as to be vertically fixed so as to be submerged in water. When operated with an agitator (39) at the outside organic matter is slowly circulated through the locked portion of the upper through hole and the pores Standing anaerobic engine inside the anaerobic biota the dephosphorization around the anaerobic biofilm formation 33, the NOx removal is in progress sludge is accumulated in a lower sludge storage chamber 30-2 by gravity. Since the aerobic characteristics are maintained by the agitator (39) while the interior and exterior of the aerobic biofilm 36 to control the separation of the interior and the outside by the biological separation membrane (35) for the separation of the porous and the biological separation outside the separation tube (34) By activating the form, organic matter is decomposed and stored in the sludge storage tank 90 by the sludge extracting member 39 'in the sludge storage chamber 30-2 stored below.

The contact aeration tanks 1 and 2 chambers 40-1 and 40-2 are foamed and fixed with urethane foams 42 and 42 'in the contact mediums 41 and 41' of the plastic type, and the media are foamed and fixed on the media surface. Simplicity of irregular bioprotrusions in the form of porous biofilm and surface adhesion rate of modified biofilms and reinforcement of irreversible adhesion properties to increase overall microbial retention rate and to control the exfoliation rate by the porous protruding surface of urethane foaming agent (42, 42 ') By further forming the anaerobic layer inside the foam membrane, it adds dephosphorization and denitrification functions other than organic matter, and maintains stable treatment and biological stability with a stable F / M ratio.

The mesh-type fibrous media 51 disposed inside the coagulation tank 50 surrounds the outer periphery of the fibrous media 51 while releasing the dissolved organic matter in the water, and the foamed porous layer and the surfaces of the fibrous materials. In the flocculation tank 50 filled with the urethane foaming agent 52 having an irregular projecting surface, the surface of the inflow fibrous media 51 and the external biofilm of the urethane foaming agent 52 and the anaerobic biofilm of the fine porous layer inside the urethane foaming agent 52 The coagulation effect is increased by the reduced microbial feeding characteristics, which improves cohesiveness, and maximizes the damping effect by the food chain of bacteria by protozoa, thereby increasing the sedimentation of treated water.

In the center of the settling tank (60), a rectifying pipe (61) for rectifying the condensed surplus sludge and a hop bar (62) of the ordinary light narrowing is formed on the outer circumferential surface spaced from the rectifying pipe (61) to collect the sediment condensate at the bottom. The precipitate bar (63) for turning the sediment agglomerates into the sludge storage tank (90) by the hop bar (62) is disposed, and the overflowware (64) located on the settling tank (60) has a final treatment water in which the repair load is reduced. Will leak.

The fibrous media 71 disposed inside the stabilizer tank 70 collects the self-assembler newly condensed by low dissolved oxygen in the treated water and increases the sound quality of the residual organics and microorganisms from protozoa or epidermis. The biological final treatment water is then formed to form the microbial culture structure of the welfare system. At this time, a small amount of freestanding organic matter or suspended matter formed in the final stage is agglomerated to decompose and go to the bottom, the sludge is stored in the sludge storage tank 90 by the self-supporting drawer 72 located at the bottom.

Disinfection discharge tank 80 is configured to be discharged to the outlet 81 after the final treatment water management and disinfection sterilization.

Referring to the embodiment according to the present invention configured as described above are as follows.

EXAMPLE

The embodiment of the anaerobic foam membrane contact sewage purification method and the functional improvement of the biofilm contact material are as follows.

Table 1-1

Table 1-2

(Calculated as 100% of covering standard with 5mm thickness of outer surface biofilm)

As shown in the table above, the average of the purification rate can be obtained BOD 97%, SS 98%, TN 90%, TP 73%, and the biofilm characteristic ratio was increased from about 10% to about 25%. The total adhesion rate is also more than 92% of the existing purification method, which is 92% or more, and the microbial rhythm of growth and death, as well as the initial formation mechanism of microorganisms, is mixed by the foam membrane. It has a stable function without any problem on throughput.

In addition, the contact aeration tanks 1 and 2 (40-1, 40-2), which can inhabit a mixture of anaerobic and aerobic microorganisms, have characteristics of urethane blowing agents (42, 42 ') in the contact media (41, 41') of plastics. By forming agglomeration tank (50) and stabilizer tank (70) of no aeration before and after the settling tank (60), the removal rate of TN and TP, which is the source of green algae and red tide of the sea, lake, can be obtained better than the conventional method. In addition, the advantages of microbial characteristics are varied, and the predominant characteristics of symbiotic welfare animals due to excessive bacterial culture at the first stage of the tank are strongly connected to the food chain as it goes to the rear of the tank, thereby reducing the amount of excess by-product sludge and greatly improving treatment efficiency. As it is a feature, maintenance costs are further reduced.

As described above, the present invention quantitatively increases the biologic by filling an anaerobic contact step that forms a space in each of which anaerobic and aerobic microorganisms can inhabit, and a urethane foaming agent that determines the complex constituent rate of the biological organism. By qualitatively characterizing the function and forming a stable agglomeration and stable chamber before and after the settling chamber, the rate of removal of TN and TP, which is the source of organic decomposition and green algae and red tide, is further improved, and the metabolic rhythm curve of the microorganism Can be digested and absorbed in the aerobic characteristics of each room to achieve a high efficiency purification effect. By taking out anaerobic digested sludge and storing it separately, it prevents anaerobic increase by accumulation of deposits and completely solves problems of plastic or textile materials. Urethane-based flexible foam membrane is adhered to the media and foamed In order to increase the balance of the particles and increase the self-assembly function of the particulate matter, the self-aggregation function of aerationless in the fiber yarn filling room is added to increase the cohesiveness when the DO of the treated water is reduced. The efficiency increase of the rate can be obtained.

Claims (1)

At the tip of the septic tank, an anaerobic digestion tank capable of decomposing contaminants or solid organic matter contained in domestic sewage by gravity difference, and decomposing by the inherent anaerobic microorganisms while storing the separated and stored contaminants for a period of time; A flow control tank having a characteristic conversion type air stirrer for storing and mixing the sewage introduced after the anaerobic digestion from the anaerobic digestion tank for a certain period of time, and an air lift transfer pipe that controls the outflow load from the flattening to the averaging After this flow control tank, the anaerobic biofilm of brush media for anaerobic biofilm in the center of a plurality of anaerobic contact tubes, and the organic material are circulated slowly through the upper hole and the pores, and the anaerobic biome is centered on the anaerobic biofilm inside the anaerobic contact tube. Separation tube that allows dephosphorization and denitrification to proceed, a biological separation membrane which is a non-woven material for controlling the pore distribution structure of sewage on the outer circumferential surface of the separation tube, and a ribbon shape that decomposes organic matter by activating the aerobic microorganisms in the appearance of the biological membrane separation membrane. Anaerobic biofilm, a nonwoven fabric, and organic matter circulating slowly through the locking part of the upper hole of the separation tube and through the pores, and anaerobic biofilm is formed inside the anaerobic contact tube. Air stirrer to be accumulated by the lower sludge storage chamber, An anaerobic contacting tank having a sludge withdrawing member for u-turning sludge in the sludge storage chamber into a sludge storage tank partitioned by the anaerobic digestion tank wall; After this anaerobic contacting tank, a flexible urethane foaming agent is foamed and attached to the contact medium of plastics to coexist with the anaerobicity of the urethane foaming agent and the aerobicity of the external contacting material to improve the retention of the biofilm and to preserve the biological image in the air gap of the foaming membrane. With contact aeration tanks 1 and 2, After contact aeration 1 and 2, the urethane foaming agent is foamed and fixed in a range in which a certain space is formed in the fiber media having the shape of the fiber media fixed phase, thereby forming an anaerobic layer in the urethane foaming agent and an aerobic layer on the outside, and diversifying the biological image. A flocculation tank having a cohesive function of aeration and aeration without inducing self-assembly of a composite biofilm to increase cohesion, After the coagulation tank, a rectifier tube rectifying the surplus sludge agglomerated, a hop bar for collecting sediment agglomerates at the bottom, and a sediment extractor and the final treated water for turning the sediment agglomerate into the sludge storage tank by the hop bar are repaired. Sedimentation tank which flows out through overflow wear which reduced load, After the sedimentation tank, the suspension tank is filled with a mesh fiber to form a microbial culture structure of the protozoa and the welfare animal system. In the lower part of the stabilizer, a small amount of self-supporting organic matter or suspended matter decomposes in the final stage and aggregates and does not go to the lower part. Anaerobic and aerobic concurrent foam membrane contact wastewater purification method characterized in that partitioned into a disinfection discharge tank that the final treatment water management and disinfection sterilization after this stabilization tank.