KR100794198B1 - Suspension contact 2nd sewage disposal system - Google Patents

Abstract

An apparatus for treating sewage in a two-step type is provided to improve the performance of a flux regulating bath, thereby improving the efficiency of the apparatus and stabilizing the treatment process of the sewage. A sewage treatment apparatus comprises an adulteration separating bath(20) and a flux regulating bath(30) for a first-step process, a first contact aeration bath(40) and a first precipitation bath(50) for a second-step process, and a second contact aeration bath(60), a second precipitation bath(70), and a discharge bath(90) for a third-step process. A contact agent supporting frame for buffering the change of input load is installed within each of the flux regulating bath, the first contact aeration bath, and the second contact aeration bath. Contact agent fixing nets are installed at an upper portion and a lower portion of the contact agent supporting frame. Each of the contact agent fixing nets has a plurality of contact media thereon. Further, a plurality of contact beds is inside the contact agent supporting frame.

Description

Suspension contact 2nd sewage disposal system

      1 is an overall view of the present invention

      Figure 2 is an enlarged view of the sump tank applied to the present invention

      Figure 3 is a perspective view of the contact frame and the fixing net of the present invention

      Figure 4 is a perspective view of the state produced on the roll of the contact phase of the present invention

      Figure 5 is a front view of the contact phase of the present invention installed inside the contact frame

      6 is a process block diagram of the present invention.

* Description of the symbols for the main parts of the drawings *

    10: sewage treatment apparatus 20: contaminant separation tank

    21: Sewage inlet 22: Boundary wall

    23: opening 30: switching flow adjustment tank

    31: contact support frame 32: primary contact phase

    32a: roll 32b: exposed portion

    32c: non-exposed part 33: fixed net

    34: sump 35: single stage air lift

    36: diffuser 37: return port

    38: two-stage air lift 39: air control valve

    40: primary contact aeration tank 41: contact support frame

    42: secondary contact 42a: roll

    42b: exposed portion 42c: non-exposed portion

    43: fixed net 44: diffuser

    50: primary precipitator 51: primary rectifier

    52: primary overflow machine 53: primary sludge transfer pipe

    60: secondary contact aeration tank 61: contact support frame

    62: tertiary contact phase 62a: roll

    62b: exposed portion 62c: non-exposed portion

    63: fixed net 64: diffuser feeder

    70: secondary precipitator 71: secondary rectifier

    72: secondary overflow machine 73: secondary sludge transfer pipe

    80: sludge storage tank 90: discharge tank

    91: discharge port

      The present invention relates to a sewage treatment apparatus, and in particular, by constructing a group of microorganisms having a high environmental impact on the pollution load characteristics of each process in the sewage treatment purification step by step, the formation of a microbial group by the characteristics of mutual food sources and the multi-step process. Suspension type contact oxidation secondary sewage treatment device that can establish clean food water by forming the food chain linkage and bringing the required characteristics of natural scientific microorganisms into the daily sewage treatment, and the convenience and management of the purification process. It is about.

      In general, in small sewage treatment facilities, the microbial attachment and purification method finds near-efficiency in microbial adhesion characteristics and quantitative deficits of microorganisms to meet administrative absence factors, thereby achieving efficiency of R & D, microbial characteristics, and manager's reality. Different from each other, it was difficult to obtain effective results.

      As a result, many researches and developments have been made to incorporate physical methods or water purification techniques of other industries, or to use biological treatments to arrange vertical suspension contact materials so that many microorganisms are attached to each unit length.

However, by inadvertently increasing the amount of microorganisms attached to the contact material, the adhesion density of microorganisms per unit length of the contact material is high, which causes biofilm thickening, and when the inflow source is increased or decreased, there is a significant variation in detachment and adhesion due to the change in active rhythm. The efficiency of the system was not constant and there were many factors that depended on the inflow sewer. In addition, due to the high culture density per unit length of the microbial contact material, it was inevitable to maintain a lot of quality and environmental conditions for the maintenance of microbial activity, and the contradiction of water treatment efficiency depends on the maintenance result. In addition, the initial effect is easy when grafting by using technologies such as hollow fiber membrane, membrane separation, and filtration in the physical treatment process or water purification industry. have.

      The present invention has been made to solve the above problems, it is recognized that the active rhythm of the microorganism is increased when imposing artificial basic conditions on the nature of microbial characteristics, the conversion flow adjustment tank during each process in the purification process, 1, The purpose is to increase the active rhythm of microorganisms by installing a roll-shaped contact phase having exposed and non-exposed portions in the secondary contact aeration tank, and another object is to maintain a low density by forming a maximum thickness of 0.5 to 1.0 cm per unit length. In addition, it is possible to maintain a variety of microorganisms with strong vitality and environmental adaptability, and to provide clean treatment water by pursuing the purification process in close proximity to domestic sewage treatment and maintaining the convenience and efficiency of efficiency.

In the sewage treatment apparatus of the present invention for achieving the above object, a first stage air lift and a water collecting tank connected to an upper end of the first stage air lift for solving the factors of reducing the flow rate and increasing the efficiency of the flow rate on the side of the switching flow adjustment tank. There is a two-stage air lift that can transfer a fixed amount of raw water to the air float so as to facilitate the smooth transfer, because the transport effort for the primary contact aeration tank, which is a later process, is excessive, and the water tank wall has excessive transfer water of the first stage air lift. 2, formed of a plurality of conveying ports for circulating through the switching flow adjusting tank, and air control valves for controlling the feeding amount and contacting support frames disposed inside the 1st and 2nd contact aeration tanks. And a fixing net for supporting the third and third contact images so that the second and third contact images are suspended from the upper and lower portions in the upper and lower portions of the contact support frame. At least one diffuser feeder in the lower part of the second and third contact phases, the 1,2,3rd contact phases are free bending rolls, the exposed and non-exposed parts, and the 1,2,3rd contact phases are flat meshes without projections. Knitting is characterized by a thickness of less than 0.5 ~ 1.0cm maximum density per unit length.

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

1 is an overall view of the present invention, Figure 2 is an enlarged view of the sump tank applied to the present invention, Figure 3 is a perspective view of the contact frame and the contact fixing net of the present invention, Figure 4 is a roll of the contact phase of the present invention 5 is a front view of a plurality of contact phases of the present invention installed inside the contact frame, and FIG. 6 is a block diagram of the entire process of the present invention.

      As shown in the sewage treatment apparatus 10, a contaminant separation tank 20 having a sewage inlet 21 into which sewage may flow is disposed at the tip, and a conversion flow adjustment tank which is the next step with the contaminant separation tank 20. An opening 23 is provided in the lower portion of the boundary wall 22 between the openings 30, and a contact support frame 31 is disposed inside the switching flow rate adjustment tank 30, and a plurality of contact inside support frame 31 is provided. A dog-shaped primary contact image 32 is installed, and a fixing net 33 for supporting the primary contact image 32 to be suspended from the upper and lower portions is fixed to the upper and lower portions of the contact material support frame 31. .

      A first stage air lift 35 is disposed at a side surface of the primary contact bed 32 for transferring to a water collecting tank 34, which is the next process, and at least one diffuser supplier 36 is disposed below the primary contact bed 32. On the wall surface of the water collecting tank (34), a conveying port (37) having a continuous function is arranged and circulated to the transfer flow rate adjusting tank (30) of the first stage air lift (35), and the water collecting tank (34) is disposed. 2) the second stage air lift 38 for supplying the feed water to the primary contact aeration tank 40, which is the next process, is disposed, and the air control capable of controlling the transfer amount is provided in the first and second stage air lifts 35 and 38. The valves 39 are provided respectively.

      A contact support frame 41 is disposed in the primary contact aeration tank 40, and a plurality of secondary contact images 42 are provided in the contact support frame 41. (41) At the top and the bottom of the fixing net 43 for supporting the secondary contact phase (42) to be suspended from the top and bottom is arranged, one or more diffuser feeder 44 in the lower portion of the secondary contact image (42) ) Is disposed, and is connected to the transfer pipe (a) between the primary contact aeration tank 40 and the primary precipitation tank (50).

       Inside the primary sedimentation tank 50, the primary rectifier 51 and the primary overcurrent flower 52 for removing vortices for inflow and outflow are disposed to be spaced apart from each other, and the sludge accumulated on the bottom surface of the primary sedimentation tank 50 is disposed. The primary sludge conveying pipe (53) for transporting to the sludge storage tank (80) is arranged, and the conveying pipe (b) is connected between the primary settling tank (50) and the secondary contact aeration tank (60).

      The secondary contact aeration tank 60, the contact material support frame 61 is disposed, and the third contact image 62 is formed in the contact material support frame 61, a plurality of the contact contact frame 61, The upper and lower fixing net 63 for supporting the tertiary contact phase 62 to be suspended from the upper and lower, and one or more diffuser feeder 64 is provided at the lower portion of the tertiary contact phase 62 The secondary contact aeration tank 60 and the secondary sedimentation tank 70 are connected by a transfer pipe c.

      Inside the secondary sedimentation tank 70, the secondary rectifier 71 and the secondary moon current flower 72 for removing vortices for inflow and outflow are disposed apart from each other, and the sludge accumulated on the bottom surface of the secondary sedimentation tank 70 is disposed. Secondary sludge conveying pipes 73 for transporting the sludge storage tank 80 tank are arranged, and the transfer pipe d is connected between the secondary settling tank 70 and the discharge tank 90.

      In the discharge tank 90, a discharge port 91 for discharging purified water is disposed on the wall surface.

      The sludge storage tank 80 is configured to be connected to the contaminant separation tank 20 is a supernatant water circulation pipe 81 that can increase the concentration effect by reprocessing the desorption water generated during concentration.

      The first, second and third contact images 32, 42 and 62 are exposed portions 32b, 42b and 62b and non-exposed portions on the free bending rolls 32a, 42a and 62a. 32c, 42c, and 62c.

     Looking at the embodiment of the present invention configured as described above are as follows.

When the sewage flows into the sewage inlet 21 in the contaminant separation tank 20, the opening 22 has a means for preventing the flow of the contaminant or floating matter into the conversion flow adjustment tank 30, which is the next step, and the switching flow adjustment tank 30. In the bottom of the contaminant separation tank 20 by agitation, organic sludge has a plurality of means for gradually flowing out of the treatment process while preventing sludge accumulation.

     The primary contact bed 32 having a volume ratio of 50% in the conversion flow adjustment tank 30 has a quantitative control characteristic of the conversion flow adjustment tank 30 as a conversion step of generating and developing microorganisms, The conversion of the first contact aeration tank 40, which is the next process, is performed as a complex means having a mutual conversion of the biological treatment function, thereby securing a reserve ratio of the subsequent process and increasing the response to load changes.

     In addition, in the first stage air lift 35 installed in the switching flow adjustment tank 30, the feed water transferred by the first stage air lift 35 at the low water level of the switching flow adjustment tank 30 is transferred to the water collecting tank 34 and the water level is increased. The raised water collecting tank 34 is transferred to the primary contact aeration tank 40, which is the secondary next step, by the two-stage air lift 38 installed therein. At this time, the primary transport water of the water collecting tank 34 is circulated continuously to the switching flow rate adjusting tank 30 through the conveying port 37.

     Therefore, by increasing the amount of feed in accordance with the two-stage transfer and increase the reserve clearance rate of the conversion flow adjustment tank 30 by 1.5 ~ 2.0 times or more to solve the problem of raw water transfer of airlift, which is often used as a non-power, non-management factors, which are convenient factors In addition, the buffering capacity of the flow adjustment is further increased by fundamentally eliminating the factor of lowering the amount of transport for the lowering of the water level.

      On the other hand, the active contact of the microorganisms for the organic matter by the secondary contact bed 42 filled in the 60% range in the primary contact aeration tank 40, which is one of the main treatment process and the acid supply unit 44 at the bottom thereof, By maintaining the characteristics of the growth phase of microorganisms while maintaining low adhesion of mixed liquor suspended solids (hereinafter referred to as MLSS), which are microorganisms in the range of 2000 to 4000 mg / l, and the thickness of the biofilm within 1 cm. The microbial attachment unit load of the secondary contact phase 42 was kept low by the holding, and the exposed portion 42b and the non-exposed portion 42c were formed by the free circular roll 42a at the time of the fiber yarn suspension. The machine coexists, and the effect is further increased by the intermittent operation of the primary contact aeration tank 40, thereby adding an advanced processing function. In addition, by increasing the packing density of the secondary contact phase 42 compared to the microorganisms, the contact load of the microorganisms is continuously maintained at every unit length of the contact material, thereby minimizing the microbial change characteristics.

       After sedimentation and separation of the sludge desorbed via the first settling tank (50) by separating the characteristics of biological microorganisms of the subsequent process and low inflow load to the organic material to reduce the biological characteristics of the second contact aeration tank (60), a second aerobic process. Linkage process to maintain the load has a function of separating around the primary settling tank (50).

      Since the tertiary contact phase 62 disposed inside the secondary contact aeration tank 60 having low load characteristics is filled with 60% of the same range as the primary contact phase 42 installed in the primary contact aeration tank 40. The microorganisms have a low density of microorganisms in the 0.5cm thickness range, and the biofilm density is filled in the same manner as the primary contact aeration tank 40, so that the suspended solids (M LSS) of the mixed solution is maintained at 500 to 1000 mg / l. Has

      Therefore, by gaining the function of purifying reserve with the margin of specific surface area for inflowing organic matter and purified microorganisms, it is linked with the increase of the food chain between microorganisms and stable process of sharing natural purification characteristics.

       As a result, it is the purification method that improves the maintenance and purification efficiency by buffering the protection function of the final treated water and the defensive function according to the change of inflow load.

If the inflow source is first introduced from the outside of the system as described above, the initial microorganisms are swelled and developed in a short time by the filtration adhesion characteristics of the secondary contact phase 42 due to the purification conditions. Biofilm from the previous stage

      The secondary contact aeration tank 60 is formed on the secondary contact phase 42 and leads to the secondary contact aeration tank 60, and the secondary contact aeration tank 60 gradually reduces the adhesion density of microorganisms due to a natural food chain relationship according to the inflow load. In addition, as the inflow source is reduced and the density reduction and endogenous growth stage of the microorganism at the time of poor load are led to the primary contact aeration tank 40, the reserve ratio is further increased. Then, when the inflow source is increased again, the activity of the microorganisms actively develops into the secondary contact aeration tank 60, so that the logarithmic growth stage is increased and the purification efficiency is maintained.

As described above, the microbiological characteristics are a step-by-step process and precipitation of the method using the sedimentation and low load characteristics of the filling biofilm. Same as the table in

table

      As described above, in the present invention, the purification process that minimizes the management aspect and maximizes the efficient characteristics by interconnecting the maintenance and management characteristics of the management process by configuring the purification stage of the contaminant in multiple stages to distinguish the characteristics of the purified microorganisms from each other. The change factor of the microorganisms during the environmental change of the purifying process was composed of the purifying process eradicating the process composition and the characteristics of each step.

      Thus, in order to develop the source of biological characteristics and apply it to this process, the unit process is divided into three stages, and the first stage consists of pretreatment and main treatment conversion functions, physical auxiliary functions, and the second stage is the main treatment core functions. The stages are divided into low load residue treatment, preliminary stages, and stabilization processes, and biological rhythms are separated by process stages to give multi-stage protective characteristics.

      In addition, by filling a 20 cm range of haptic fiber yarn contact phase with a high density of microorganisms with a high density of 150 ~ 220m / ㎥ to minimize the density of purifying load and adherent microorganisms per unit length, and the three-step process to approach the natural state Could.

In this way, by pursuing a purification process that minimizes the rhythm of biologic change based on the step-by-step process and the characteristics of the fiber yarn contact phase, the sewage treatment process of the catalytic oxidation secondary treatment method is greatly reduced, thereby increasing the water treatment efficiency and treating water. Was able to stabilize.

      As described above, the present invention is a mesh wood type without protrusions, which is capable of sharing the initial filterability and adhesion of the contact phase filled therein and prevents microbial hypertrophy, and increases the packing density to mutually eliminate microorganisms. In addition to increasing the effect, clean water can be obtained, and the flow control function by the air lift-type raw water transfer, which is easy to manage in small sewage treatment facilities with high flow rate deviations, is provided with two-stage air lifts, so It can maintain smoothly, and the effect of improving the buffer capacity and improving the function of the conversion flow regulating tank greatly improves the efficiency of treatment facilities and stabilizes the process.

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Claims (4)

(delete)      And a sewage separation tank (20) capable of separating non-organic, non-degradable foreign matter by receiving sewage and temporarily storage and decomposition of organic solids, A conversion flow rate adjustment tank 30 for sharing the mutual conversion characteristics of the physical function flow rate control and the biological treatment function so that the characteristics of the water quality can be developed as an exhalation function; Primary contact aeration tank 40, which is the main treatment process to maintain the aerobic phase characteristics of the microorganism by maintaining the active range of the microorganism to the heavy load, Primary settling tank (50) for firstly separating the desorbed sludge, Secondary contact aeration tank (60), which is an auxiliary treatment process having an increase in the food chain and natural purification characteristics between the microorganisms by obtaining a function having a preliminary preliminary function by affording a specific surface area for attachment of organic matter and purified microorganisms, Secondary settling tank (70) for separating the sewage sludge secondary, Sludge storage tank 80 and the sludge collected in the first and second primary settling tank (50, 70) and A discharge tank 90 for discharging the supernatant after disinfection; Under the boundary wall 22 of the contaminant separation tank 20 and the switching flow adjustment tank 30, an opening 23 for preventing the accumulation of organic matter based on the change in water level and the agitation of the switching flow adjustment tank 30, Contact switching frames (31) (41) (61) disposed in the switching flow rate adjustment tank (30), the primary contact aeration tank (40) and the secondary contact aeration tank (60); Upper and lower contact contact frames 31, 41, 61, and mesh fixing nets 33, 43, 63, In the purification processing apparatus having the contact support frame (31) (41) (61) having at least one diffuser (36) (44) (64) at the bottom, The switching flow rate adjustment tank 30 side has a first stage air lift 35 for solving the factor of reducing the amount of transport due to the water level and increasing the efficiency of the flow rate adjustment; The water tank 34 connected to the upper end of the first stage air lift 35 has two stages to transfer the quantity of raw water to the air float so that the transfer effort for the first contact aeration tank 40, which is a later process, is low. Air lift 38, A conveyance port 37 which can be circulated to the switching flow rate adjusting tank 30 when the feed water of the first stage air lift 35 is excessively formed on the wall surface of the water collecting tank 34; Suspension type contact oxidation secondary sewage treatment apparatus, characterized in that the first and second stage air lift (35) (38) is composed of an air control valve (39) capable of controlling the conveying amount.   The method of claim 2, Suspension type contact oxidation secondary sewage treatment, characterized in that arranged in the contact support frame 31, 41, 61, a plurality of primary, secondary, tertiary contact phase (32, 42, 62). Device.   The method of claim 3, wherein  The 1,2,3rd contact phases 32, 42 and 62 are exposed portions 32b, 42b and 62b and non-exposed portions 32c on free bending rolls 32a, 42a and 62a. 42c) 62c, The 1,2,3rd contact phases 32, 42 and 62 are knitted into a flat mesh without protrusions and have a low density up to 0.5 to 1.0 cm thick per unit length. Sewage treatment unit.

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