KR200229765Y1 - Disposal plant of sewage and waste water contained bioceramic media for nitrogen and phosphorus - Google Patents

Abstract

The present invention relates to a sewage and sewage treatment apparatus including a nitrogen and a phosphorus bioceramic carrier, including a specific gravity treatment tank, a primary biofiltration tank, a primary catalytic oxidation tank, a secondary biofiltration tank, a secondary catalytic oxidation tank, and a contact A treatment apparatus including a filtration tank and a sludge storage tank. The wastewater treatment apparatus of the present invention is a device that can efficiently remove nitrogen and phosphorus-removed bioceramic carriers by biochemically adsorbing and decomposing organic matter, nitrogen, and phosphorus in sewage and sewage.

Description

Sewage and sewage treatment apparatus including nitrogen and phosphorus removal bioceramic carriers {DISPOSAL PLANT OF SEWAGE AND WASTE WATER CONTAINED BIOCERAMIC MEDIA FOR NITROGEN AND PHOSPHORUS}

The present invention relates to a sewage and sewage treatment apparatus, and more particularly, to a biological sewage and sewage treatment apparatus using a nitrogen, phosphorus removal bioceramic carrier having excellent denitrification, dephosphorization and suspended matter removal performance.

Nitrogen and phosphorus, which are the causes of red and green algae, have flowed into rivers and lakes, and more than half of the water supply has already been eutrophicated or quantified, and has encountered great quantitative and qualitative seriousness in protecting and securing water resources.

The common method applied in the conventional water treatment apparatus and method is the activated sludge method. The activated sludge method has a low removal efficiency in the case of nutrients such as nitrogen and phosphorus, which is treated without advanced treatment, resulting in serious eutrophication by treated water, and requires a large amount of facility cost and skill in treating technology required for a large amount of dilution water. There is such a problem.

In addition, the B3 method, which is a method of selectively incubating Bacillus bacteria for the purpose of removing organic substances, nitrogen, and phosphorus, predominantly sporifying them, does not require a separate deodorization and disinfection facility, has good sludge settling properties, and bulking phenomenon. While this does not occur, there are problems such as a large site, a lot of construction cost and operation maintenance cost, and complicated process.

Wastewater treatment using the activated sludge method of Korean Patent Publication No. 87-1996 as a prior art, Aeration type advanced wastewater treatment apparatus of a biofilm filtration tank filled with ceramic granular materials of Korean Patent Publication Nos. 88-150 and 88-151, Korean Patent Publication There is a wastewater treatment method using an activated sludge method and a biofilm method utilizing a carbon-based adsorbent of No. 92-9788. In addition, Korean Patent Publication No. 94-1253 proposes a method of increasing the dissolved oxygen in the aeration tank in wastewater treatment using activated sludge.

In the biological wastewater treatment apparatus using the activated sludge method, the concentration of the activated sludge in the aeration tank must be kept constant, so a procedure for returning the activated sludge into the aeration tank from the final sedimentation basin is required. Therefore, the activated sludge method should not only detect sludge concentration in the aeration tank at any time, but also require the installation of an active sludge return pump at the bottom of the final sedimentation basin and connect the final sedimentation basin and the aeration tank with a return pipe, which requires considerable facility investment and operation costs. There is this.

In the biological sewage treatment method, a carrier having an appropriate material, size, and structure to which microorganisms can attach and grow in advance must be manufactured.In addition, since microorganisms are accumulated in a carrier in a steady state, efficient use of dissolved oxygen is inhibited. There is.

In addition, one of the problems is that a large space and many facilities are required for the application of the activated sludge process or the biofilm method.

Accordingly, the present invention provides an efficient sewage and sewage treatment apparatus using a bioceramic carrier which has the function of promoting indigenous microorganisms and removing nitrogen, phosphorus and suspended solids for the purpose of removing nutrient substance factors. For the purpose of

1 is a schematic configuration diagram of the sewage, sewage treatment apparatus of the present invention,

2 is a side view of the specific gravity treatment tank of the present invention,

3 is a side view of the specific gravity treatment tank in which the sludge blocking membrane of the present invention is further installed,

4 is a side view of the primary biofiltration tank of the present invention,

5 is a side view of the primary contact oxidation tank of the present invention,

6 is a side view of a secondary biofiltration tank of the present invention,

7 is a side view of the secondary contact oxidation tank of the present invention,

8 is a side view of the contact filtration tank of the present invention.

Explanation of symbols on the main parts of the drawings

1: settle 2: screen

3: raw water pump tank 4: specific gravity treatment tank

5: primary biofiltration tank 6: primary catalytic oxidation tank

7: secondary biofiltration tank 8: secondary catalytic oxidation tank

9: Contact filtration tank 10: Sludge storage tank

This design

a) a specific gravity treatment tank for installing sewage flowed from the raw water pump tank to settle and separate the floating contaminants rising and falling by specific gravity by installing a triple barrier membrane;

b) a biological filtration tank connected to the specific gravity treatment tank and filling ultra-small flowable bioceramic carriers to treat sludge and overgrown microorganisms with a short residence time by flocculation, sedimentation, and filtration functions; And

c) is connected to the biological filtration tank, there is an acid pipe at the bottom, and the nitrogen, phosphorus removal bioceramic carrier of the present invention in the upper part of the tube to supply dissolved oxygen to treat the nitrogen, phosphorus of sewage Contact oxidizing tank;

It provides a sewage treatment apparatus using a bioceramic carrier comprising a.

One or more tanks selected from the group consisting of the tanks, the raw water pump tank, the specific gravity treatment tank, the biological filtration tank, and the catalytic oxidation tank of the present invention are arranged with steel gratings on top, and the crushed stone, bio-ceramic carrier, Filling materials including wood chips and blended soil are filled. In addition, the lower part of the tank is provided with an diffuser, a backwash pipe, a sludge drawing pipe, an agitator, or a drawing pump.

The biofiltration tank and the catalytic oxidation tank of the present invention are filled with a bioceramic carrier in the tank, and the bioceramic carrier is a bioceramic carrier for nitrogen and phosphorus removal, which includes effervescent shale and loess.

The sewage and sewage treatment apparatus of the present invention further includes a primary biofiltration tank, a primary contact oxidation tank, a secondary biofiltration tank, a secondary contact oxidation tank, a contact filtration tank, and a sludge storage tank that are sequentially installed in connection with a specific gravity treatment tank. In addition, the sewage, sewage treatment apparatus of the present invention further includes a sedimentation basin, a screen tank and a raw water pump tank as a previous stage of the specific gravity treatment tank. The contact filtration is filled with an adsorbent in the bath.

In addition, the activated sludge of the secondary biofiltration tank includes a conveying facility for returning to the specific gravity treatment tank and a transport facility for transferring the surplus sludge of the secondary biofiltration tank to the sludge storage tank. Includes facilities to return to primary catalytic oxidizers.

The present invention provides a sewage and sewage treatment apparatus further comprising a facility for dewatering and fermenting the sludge concentrated in the sludge storage tank to produce organic fertilizer.

In addition, the sewage treatment apparatus of the present invention is provided with an upper filter layer in each tank. The upper media layer covers the crushed stone (100-150 m / m), carrier (25 m / m), net (3-5 mm), wood (bark), and mixed soil (ventilated soil) and planted grass on the iron grid. It is installed and absorbs and decomposes hard-decomposable organic substances and odors contained in the sewage by the indigenous microorganisms of the upper media layer, and decomposes and preys by indigenous microorganisms and small animals that float, resulting in scum and sludge generation. Not only is it prevented, but the upper part is covered with mixed soil, so there is no change in water temperature in winter, so that stable sewage treatment water can be obtained.

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

The sewage and sewage treatment apparatus of the present invention is shown in Figure 1, the detailed structure is shown in Figures 2 to 8.

The sewage and sewage treatment apparatus of the present invention is arranged on the sedimentation basin (1) in sequence so that the screen tank (2), the raw water pump tank (3), the specific gravity treatment tank (4), the primary biological filtration tank (5), the primary contact oxidation A tank 6, a secondary biological filtration tank 7, a secondary contact oxidation tank 8, a contact filtration tank 9, and a sludge storage tank 10 are included.

The sedimentation tank 1 is connected to the screen tank 2, and the sewage is moved through the partition installed between the sedimentation tank and the screen tank. The raw water pump tank 3 connected to the screen tank is provided with a pump, and is provided with a device for discharging the sediment. Sewage flowed from the screen tank is transferred from the raw water pump tank to the specific gravity treatment tank, and the settled impurities are discharged periodically. Sedimentation tanks and contaminant discharge devices may be omitted depending on the size of the treatment plant.

The specific gravity treatment tank 4 is connected to the raw water pump tank, and the sludge drawing pipe (b) is installed at the bottom of the floating contaminant blocking membrane (a), which is a triple blocking membrane. The triple barrier membrane is settled and separated in a short time by the suspended solids rising and descending due to the rapid inflow of sewage, reducing the purification process, adjusting the inflow and concentration, and the denitrification of the treated water and sludge by anaerobic microorganisms Reaction and decomposition take place. In addition, the impurity in the sewage of the sewage forced into the pump flows into the unprecipitated state, preventing filtration and sedimentation from taking a long time and sedimenting the sewage in a short time. In small treatment plants with a capacity of less than 300 m ³ / day, it is possible to draw contaminants here. In addition, the specific gravity treatment tank can further install the suspended sludge blocking film (o) as shown in FIG. At this time, the sludge drawing pipe can be omitted.

The primary biofiltration tank (5) is provided with a sewage barrier (c) and a suspended sludge barrier (d) on both sides of the tank, a stirrer (e) is installed at the bottom, and a steel grating (f) at the top of the stirrer. The bioceramic carrier (h) is filled in the inner capillary network (g). The sewage barrier membrane is a device that prevents the sewage and sewage from passing through the bottom of the tank without contacting the media layer, and the suspended sludge barrier membrane can be installed in each tank as a device to prevent the suspended sludge from overflowing into the next tank. The biotreatment apparatus is a device in which a flowable bioceramic carrier is filled to remove nitrogen by anaerobic decomposition and denitrification of organic matter by filtration and the release of phosphorus by the bioceramic carrier.

The bioceramic carrier is made of foaming shale (Gyewon-ri, Hwacheon-gun, Gyeseong-ri, Gangwon-do, Hwacheon-gun, Gyeseong-ri, Gangwon-do) and natural soils, which are capable of highly purifying indigenous and soil microorganisms. It is a porous microbial habitat carrier made by foaming and sintering at high temperature, so it is durable and permanently adheres and detaches microbial membranes on the surface of the carrier, so that aerobic and anaerobic dominant microorganisms coexist, and biologically adsorb and decompose organic matters It is a functional carrier that is oxidized to remove large amounts of phosphorus and nitrogen. The bioceramic carrier is a porous microbial habitat having a high durability and specific surface area, and organic and indigenous microorganisms adhere to the surface, thereby forming an aerobic microbial membrane on the surface of the carrier, which causes nitrification by aerobic digestion, and anaerobic in micropores therein. The microbial membrane is formed, and in the anaerobic state, denitrification by anaerobic digestion and gasification by the sexual alteration of the carrier is carried out, and denitrification is carried out. Special components are dissolved and ionized to remove phosphorus by mineralizing phosphorus. Acidic water is exchanged weakly alkaline.

On the other hand, the components of the carrier are shown in Table 1 below.

Kinds Main component Far infrared ray forward mortality Composition ratio (%) Effervescent shale SiO ₂ 48%, Al ₂ O ₃ 35%, No ₂ O 0.90-0.96 20 to 40 Ocher SiO ₂ 62%, Al ₂ O ₃ 22%, Fe ₂ O ₃ 4% 0.85-0.92 30 to 50 Dolomite CO ₂ 47.9%, CaO 30%, MgO 21.7% 0.87-0.91 5 to 15 Admixture Fe, CO ₂ , CaO 15 to 20

The primary contact oxidation tank 6 is connected to the primary biofiltration tank and is a tunnel-type aerobic tank. The structure has an iron lattice f on the bottom diffuser i and a bioceramic carrier h filled thereon. Sewage flowed into the primary catalytic oxidizer contacts the biofilm as it moves through the pores of the bioceramic carrier and is adsorbed, oxidized, and decomposed by aerobic microbial groups, and also takes up nitrogen, phosphorus intake, and pyrolysis.

The secondary biofiltration tank is equipped with a drawing pump (j) and a back washing pipe (k) at the bottom, a grating is installed at the top, a grating network (g) in the grating, and a bioceramic carrier (h) in the grating network. Is installed. Secondary biological filtration tank is a tank where the final biodegradation of residual organic matter remaining in the treated sewage water is carried out, and it can perform the coagulation, sedimentation, and filtration functions simultaneously and operate in anoxic state to further remove nitrogen. In addition, the sludge between the fluidized media layers is easily detached by periodic backwashing, so the biofilm is stable. The activated sludge is returned to the specific gravity treatment tank, the surplus sludge is sent to the sludge storage tank, and the supernatant water flows through the contact filter medium and flows into the two-contact oxidation tank.

In addition, in large sewage treatment plants, sedimentation tanks may be installed instead of secondary biofiltration tanks.

The secondary contact oxidation tank is connected to the secondary biological filtration tank and is a tunnel-type aerobic tank. The structure has an iron lattice f on the lower diffuser i and a bioceramic carrier h filled thereon. The secondary contact oxidation tank is a tank for highly removing nitrogen and phosphorus in the sewage. The supernatant water is transferred to the contact oxidation tank through an air feeder, and the sludge is returned to the primary contact oxidation tank.

The contact filtration tank is provided with a back washing tube (k) at the bottom of the tank, and the adsorbent (m) is filled in the iron grid (f) and the stainless steel mesh (l) in the upper grid. The adsorbent is bamboo charcoal or oak charcoal and is filled up before soil cover. An air lift (n) is installed in the contact filtration tank so that the sludge collected in the lower part of the contact filtration tank is transferred to the sludge storage tank. The contact filtration tank is sterilized by an adsorbent.

The sludge storage tank stores materials discharged and removed from the contact filtration tank and the secondary biofiltration tank, and the desorption liquid is installed to be returned to the one-contact oxidation tank, and the stored sludge is a multi-plate external sludge treatment device. Concentrate, dehydrate, and ferment at high speed in a vacuum fermentation chamber. The fermented sludge can be used as a soil improver.

The specific gravity treatment tank, the bio filtration tank, the contact oxidation tank, the contact filtration tank is provided with an upper filter layer on the top of the tank. The upper media layer covers the crushed stone (100-150 m / m), carrier (25 m / m), net (3-5 mm), wood (bark), and mixed soil (ventilated soil) and planted grass on the iron grid. It is designed to prevent the erosion of the soil during the rainy season and to support the growth and movement of indigenous microorganisms, protozoa, and soil small animals. Therefore, it absorbs and decomposes hard-decomposable organic substances and odors contained in sewage and treats them simply with inorganic substances, and the sludge is decomposed and fed by indigenous microorganisms and small animals to prevent scum and sludge. It is coated with, so that there is no change in water temperature in winter and it can get stable sewage treatment water.

As mentioned above, the sewage and wastewater treatment apparatus using the bioceramic carrier of the present invention is simple in structure and can reduce the cost of the facility, and can bring about a high treatment effect without installing a third advanced treatment facility. In addition, through the sewage and sewage treatment system using the bioceramic carrier of the present invention, it is possible to remove more than 85% of nitrogen contained in sewage and sewage, and to remove up to 95% of phosphorus. And the scattering of pathogens can be prevented.

Claims (7)

a) a specific gravity treatment tank for installing sewage flowed from the raw water pump tank to settle and separate the floating contaminants rising and falling by specific gravity by installing a triple barrier membrane; b) a biological filtration tank connected to the specific gravity treatment tank to remove the sludge and the overgrown microorganisms by the flocculation, sedimentation, and filtration functions by filling a fluid bioceramic carrier; And c) is connected to the biological filtration tank, there is an acid pipe at the bottom, and the nitrogen, phosphorus removal bioceramic carrier of the present invention in the upper part of the tube to supply dissolved oxygen to treat the nitrogen, phosphorus of sewage Contact oxidizing tank; Oh, sewage treatment apparatus using a bioceramic carrier comprising a. The method of claim 1, wherein at least one tank selected from the group consisting of a raw water pump tank, a specific gravity treatment tank, a biological filtration tank and a catalytic oxidation tank is provided with an acid pipe, a backwash pipe, a sludge drawing pipe, a stirrer, or a drawing pump. Oh, sewage treatment system characterized. The method according to claim 1, further comprising a primary biofiltration tank, a primary contact oxidation tank, a secondary biofiltration tank, a secondary contact oxidation tank, a contact filtration tank and a sludge storage tank which are sequentially installed in connection with the specific gravity treatment tank. Oh, sewage treatment. The sewage and sewage treatment apparatus according to claim 1, wherein the sewage and sewage treatment apparatus further includes a sedimentation basin, a screen tank, and a raw water pump tank as a previous stage of the specific gravity treatment tank. The sewage treatment apparatus of claim 1, wherein the sewage treatment apparatus further comprises a facility for dewatering and fermenting the sludge concentrated sludge to produce organic fertilizer. The sewage treatment apparatus according to claim 1, wherein the specific gravity treatment tank is further provided with a floating sludge barrier layer on an upper portion of the barrier membrane connected to the lower end of the triple barrier membrane. The method of claim 3, wherein The activated sludge of the secondary biofiltration tank includes a conveying facility for returning to the specific gravity treatment tank and a transport facility for transferring the excess sludge of the secondary biofiltration tank to the sludge storage tank; The sludge storage tank includes a facility for returning the desorption liquid to the primary catalytic oxidation tank; The secondary catalytic oxidation tank comprises a facility for conveying sludge to the primary catalytic oxidation tank.