KR20030016721A - Process for treatment wastewater using gsd, bcs, vsep - Google Patents

Abstract

PURPOSE: A process for treatment livestock wastewater using gas stripper disintegrator (GSD), bio-ceramic system SBR (BCS/SBR) and vibratory shear enhanced processing (VSEP) membrane filters is provided, which can enhance treatment efficiency of livestock excrement by a consistent process consisting of GSD, BCS/SBR, VSEP. CONSTITUTION: The process comprises the steps of introducing livestock wastewater into a gas stripper disintegrator(1) where livestock wastewater is rotated and collided so that high concentration solid of the livestock wastewater is split and stripped; introducing preliminarily treated wastewater into a bio-ceramic system SBR(3) in which several bioceramic towers(31) are installed to treat the wastewater biologically; and finally introducing the biologically treated wastewater into vibratory shear enhanced processing (VSEP) membrane filters(5) for advance treatment.

Description

Livestock wastewater treatment technology using bio-ceramic SBI and rotary vibration membrane separation process {PROCESS FOR TREATMENT WASTEWATER USING GSD, BCS, VSEP}

The present invention relates to a livestock waste treatment process, and more specifically, to livestock waste manure is composed of three stages of pre-treatment, main treatment, and post-treatment consistently, livestock waste treatment process that can efficiently purify and recycle livestock wastewater It is about.

In general, the wastewater treatment process is a process for treating livestock wastewater, industrial wastewater, manure and leachate by physical, chemical and biological methods. That is, these processes remove high concentrations of organic matter, ammonia, nitrogen, odorous substances, volatile substances, and hardly decomposable substances contained in wastewater.

Especially in the treatment of livestock manure, various purification treatment methods have been developed, such as centrifugal separator, ammonia degassing, continuous batch reactor (SBR), continuous inlet reactor, membrane separation by filter, etc. The method is an example.

However, this treatment method has a problem that the treatment capacity is not high compared to the supply energy and operating time by applying each treatment process as a single process.

In addition, there is a limit in the purification efficiency, the recycling rate of the livestock wastes purified is also not high.

An object of the present invention has been made to solve the above-mentioned problems, by configuring each treatment process of GSD, BCS / SBR, VSEP as a single integrated process to improve the treatment efficiency of livestock manure and raise the recycling rate To provide a manure treatment process.

1 is a schematic view showing a livestock waste treatment process according to the present invention.

Figure 2 is a flow chart showing the serial process of the livestock waste treatment process according to the present invention.

3 is a sectional view showing the GSD device shown in FIG.

4 is a schematic view showing the Bio-Ceramic tower device shown in FIG.

Fig. 5 is an external view showing the VSEP device shown in Fig. 1;

6 is a schematic diagram showing the internal operation of the VSEP device shown in FIG.

In order to realize the object of the present invention, a preferred embodiment of the present invention is a pre-treatment step of crushing, degassing a high concentration of solids by rotating and colliding livestock waste water by a gas stripper disintegrator (GSD) device, and livestock through the pre-treatment step A main treatment step of purifying waste water by a microbial removal method using a BCS / SBR (BIO-Ceramic System SBR) reactor, and a post-treatment step of treating a second treated water having undergone the pretreatment and main treatment steps by a VSEP apparatus. It provides a livestock waste treatment process comprising a.

According to a preferred embodiment of the present invention, the GSD device includes at least one or more divided cylindrical tank members, a livestock wastewater inlet and a gas outlet connected to the tank members, and are mounted inside the tank members. A fluid flow guide member for collecting the flow of the fluid flowing from the inlet to the center portion and guides it downward, and a rotating plate for rotating the livestock wastewater falling through the fluid flow guide member to impinge the inner surface of the jaw members with centrifugal force. It includes.

The BCS / SBR reactor has at least one bio-ceramic tower installed inside the reactor for efficient removal of organic matter and nutrients from the livestock wastewater, and bio-ceramic and marine silica and porous volcanic ore (pumice) inside the bio-ceramic tower. It includes.

The VSEP membrane separation system includes a frame, a pressure vessel mounted on an upper portion of the frame and storing livestock wastewater therein, a motor for vibrating the pressure vessel, and a vibration vessel when the motor is mounted inside the pressure vessel. And concentration polarization caused by the wastewater due to the shear force caused by the rotation.

Hereinafter, with reference to the accompanying drawings will be described in detail the livestock waste treatment process according to a preferred embodiment of the present invention.

As shown in Figure 1, the livestock manure treatment process proposed by the present invention is a pretreatment step (S100) for crushing, degassing a high concentration of solids by rotating and colliding livestock manure by the GSD (Gas Stripper Disintegrator; 1) device, The main treatment step (S200) for purifying the livestock wastes passed through the step (S100) by the microbial removal method by the BCS / SBR (BIO-Ceramic System SBR; 3) reaction tank, and the steps (S100, S200) And a post-treatment step S300 of finally processing the coarse livestock manure by the VSEP apparatus 5.

The pretreatment step (S100) purifies the contaminants contained in the livestock wastewater, industrial wastewater containing high concentration nitrogen such as semiconductor wastewater and high concentration wastewater such as livestock wastewater, manure, and leachate using the GSD apparatus 1. In this pretreatment step (S100), ammonia nitrogen, volatile substances, odorous substances, hardly decomposable substances are degassed to reduce ammonia toxicity, and high concentrations of organic substances are crushed to increase SCOD to increase C / N ratio, thereby increasing biological treatment efficiency of the latter stage. Significantly improve.

In the GSD apparatus 1, water treatment tanks 9, 10, 11 are provided inside the vertical and horizontal frames 7. The water treatment tanks 9, 10, and 11 have one or more divided cylindrical tubular members joined in the longitudinal direction to form a single cylinder, and the discharge member 13 is coupled to the lowermost tub member 11. Show that it is.

The jaw members 9, 10, and 11 are provided with air inlets 15, 16, and 17 for introducing air therein, and the jaw members 9, 10, and 11 are provided inside the water treatment tank. Gas outlets 19, 20, and 21 are provided for exporting the generated boil-off gas and the like.

And, the inner surface of each of the jaw member (9, 10, 11) is provided with a fluid flow guide member 23 for collecting the flow of fluid flowing from the livestock wastewater inlet (2) to the center to guide the lower side. These fluid flow guide members 23 are plate bodies, which collect the flow of fluid to the center and guide the collected fluid downward.

Then, the rotating plate 25 for rotating the livestock wastewater falling through these fluid flow guide member 23 to impinge on the inner surface of the jaw members by centrifugal force is fixed to the rotating shaft, respectively.

Guide members for dispersing fluid and guiding outward are integrally formed or attached to the upper surface of the rotating plate 25.

In addition, a collision plate is selectively installed inside each of the jaw members 9, 10, and 11, thereby increasing the collision area with the object to be moved at high speed by the centrifugal force of the rotating plate 25, thereby disassembling and treating the object. Make the destruction more effective.

Looking at the operation of the GSD device 1 having such a structure, first driving the driving means 27 while introducing the livestock waste water from the upper side of the water treatment tank.

The introduced livestock wastewater introduced into the water treatment tanks 9, 10, and 11 flows toward the center portion along the inclined surface of the fluid flow guide member 23 and falls to the center portion of the rotating plate 25 located at the top thereof.

In addition, the rotating plate 25 is rotated by the driving means 27, and in this process, the livestock wastewater collected at the center of the rotating plate 25 moves to the periphery of the rotating plate 25 by centrifugal force and collides with the collision plate. It is then atomized and also decomposes and destroys the solids contained in the livestock wastewater.

The primary atomized gas or vapor is discharged to the outside through the gas outlet 19, and the livestock wastewater having the decomposed and destroyed solids moves downward and falls to the fluid flow guide member 23 while being inclined. Gathered back to the center.

The livestock wastewater collected at the center portion of the rotating plate 25 is atomized by moving to the periphery of the rotating plate 25 by centrifugal force and colliding with the impingement plate, and decomposing and destroying the solids contained in the livestock wastewater. Therefore, the secondary atomized gas or steam is discharged to the outside through the gas outlet (20).

Through the above process, the livestock wastewater is sprayed from each of the tank members 9, 10, and 11 while being discharged to the outside, and the livestock wastewater containing the residual solids is finally discharged through the outlet 13. It is discharged to the outside.

Referring back to FIG. 1, the livestock wastewater having undergone the pretreatment step (S100) is subjected to the main treatment step (S200) by the BCS / SBR reactor 3. The main treatment step (S300) is a method of removing organic matter and nutrients in water by culturing a high concentration of microorganisms having excellent water purification ability by applying a bio-ceramic carrier to a general SBR method.

Although BOD is removed to some extent in the existing livestock wastewater treatment process, it is difficult to remove nutrients such as nitrogen and phosphorus. Therefore, the nutrient removal process by the BCS / SBR method proposed by the present invention is composed of biological nitrogen removal and chemical removal.

Phosphorus is removed from the wastewater by reaction-agglomeration and about 70% is separated by coagulation and by-products. Biological removal of nitrogen components means that ammonia nitrogen is converted (nitrified) to nitrates under aerobic conditions, and is generated (denitrified) as nitrogen gas under anoxic conditions and recycled to the air.

Aerobic nitrification includes the microorganisms of Nitrosomonas and Nitrobacter, and denitrification includes a wider variety of microbial species: Aerobacter, Bacillus, Flavobacteria, and Lactobacillus. , Micrococcus, Proteus, Pseudomonas, and Spirillum are known to be involved.

By maintaining a high concentration of these microorganisms with a bio-ceramic SBR, by controlling the aeration / non-aeration cycle, the aerobic / anoxic environment is induced in a single reactor for biological nitrification and denitrification.

As shown in FIGS. 1 and 4, the BCS / SBR reactor 3 is a structure in which a plurality of bio ceramic towers 31 are installed inside the reactor 29 in which livestock wastewater and microorganism coexist. In addition, the bio-ceramic tower 31 is filled with a bio-ceramic. Therefore, the livestock wastewater supplied to the reaction tank 29 is mixed and circulated with the microorganisms and passes through the plurality of bioceramic towers 31, and the livestock wastewater is purified by the bioceramic and the microorganisms.

The bio-ceramic 33 is composed of marine siliceous and porous volcanic ore, marine siliceous is produced by the ion exchange material in the mesozoic subsea sedimentary mine, and forms essential minerals in water and enhances the activity of microorganisms. There is a characteristic to let. In addition, it has a large surface area that is easy to form aerobic microbial flora.

The bio-ceramic 33 adsorbs and removes odorous substances and toxic substances that are not suitable for fertilization, and the produced effluent is similar in composition to general solid organic fertilizers and can be used as an excellent liquid fertilizer when a trace component is added.

As described above, the livestock wastewater passed through the main treatment step (S200) by the BCS / SBR reactor 3 is finally purified by the post-treatment process (S300). In the post-treatment step (S300), the VSEP membrane separation system 5 is used.

The VSEP membrane separation system 5 is a filtering method in which strong turbulence is generated on the membrane surface by the rotation and vibration of the membrane module to prevent the blockage of the membrane and increase the treatment flow rate.

In other words, the cross flow applied to the existing membrane separation system only applies pressure to push the waste water, so that organic contaminants accumulate on the surface of the membrane to accelerate the blockage of the membrane, which can be applied to livestock wastewater. Could not.

In the case of the VSEP membrane separation system 5 proposed by the present invention, a shearing force is generated by vibrating the membrane while rotating, thereby preventing contaminants from adhering to the membrane surface, and thus high removal efficiency of 90% or more can be expected.

That is, as shown in Figure 5, the VSEP membrane separation system 5 is a pressure vessel that is mounted on the frame 35, the upper portion of the frame 35 and the membrane 36 (Fig. 6) therein 37 and a motor 39 for vibrating the pressure vessel 37.

A wastewater supply pipe is connected to the upper portion of the pressure vessel 37, and a plurality of membranes 36 (FIG. 6) are stacked in the vertical direction in the pressure vessel 37. Thus, the wastewater is supplied into the pressure vessel 37 through the wastewater supply pipe and is purified while passing through the plurality of membranes 36 (FIG. 6).

As shown in FIG. 6, the membrane 36 (FIG. 6) has a myriad of fine pores 41 formed therein, and waste water passes through the micropores 41. Will be removed.

In other words, when the operation valve is closed and the VSEP system is operated, clean permeate is produced inside, concentrated concentrated water is discharged to the edge, and the valve is opened by the program and the solids are concentrated and discharged.

The vibration amplitude (Shibration Amplitude of Shear Rate) maintains the effect of membrane separation ability and the shear force is caused by the vibration of the torsion spring connected to the bottom of the membrane pack. The axis where the membrane pack is installed vibrates 60 Hz by 1 inch from side to side, and shear intensity is about 150,000 Inverse Seconds in the middle of the axis.

When the VSEP membrane separation system works, it is possible to purify at low pressure by overcoming the concentration polarization phenomenon, less fouling phenomenon by strong shear force, and high recovery rate of 90-95% or more can be expected. In addition, the life of the membrane is long, the installation area is minimized by the vertical arrangement of the membrane, and the maintenance cost is low because only the membrane is replaced with the VSEP module installed.

As described above, the livestock manure is purified through three steps of pretreatment, main treatment and post-treatment.

As such, the livestock waste treatment process according to the preferred embodiment of the present invention has the following advantages.

First, by treating the GSD, BCS / SBR, and VSEP as a consistent process, the treatment efficiency of livestock manure can be improved.

Second, by crushing the solids in the GSD process and removal of ammonia gas and VOC, it is possible to increase the efficiency of biological treatment of the post-process.

Third, the BCS / SBR process is equipped with a bio ceramic tower in the SBR for excellent removal of organic matter, nitrogen and phosphorus in high concentration wastewater, and can actively cope with impact loads or temperature changes.

Fourth, the removal efficiency can be improved by adsorbing and ion-exchanging toxic or odorous substances by the effect of Bio Ceramic.

Fifth, flexible operation of aeration / non-aeration cycle, driver's motion by automatic control of pH, DO, ORP and water quality control of BCS / SBR effluent are possible.

Sixth, organic matter and nutrients contained in BCS / SBR treated water can be recycled by filtration / concentration through VSEP, a membrane process.

Seventh, VSEP method minimizes membrane contamination by generating strong shear force on membrane surface by vibration and rotation. It can increase the concentration of liquid fertilizer by reducing membrane contamination, and can extend the washing cycle and life of membrane. have.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims, the detailed description of the invention, and the scope of the accompanying drawings. It goes without saying that it belongs to the scope of the present invention.

Claims (4)

A pretreatment step of crushing and degassing the high concentration solids by rotating and colliding the livestock waste water by a gas stripper disintegrator (GSD) apparatus; A main treatment step of purifying the livestock wastewater which has undergone the pretreatment step by a microbial removal method by a BCS / SBR (BIO-Ceramic System SBR) reactor; And Livestock wastewater treatment process comprising a post-treatment step of treating the secondary treated water through the pre-treatment and the main treatment step by a VSEP device. According to claim 1, wherein the GSD device is at least one or more divided cylindrical tubular members, livestock wastewater inlet and gas outlet connected to the tubular members, the inside of the tank member is installed in the inflow from the livestock wastewater inlet It includes a fluid flow guide member for collecting the flow of the fluid to the center portion to guide the lower side, and a rotating plate for rotating the livestock waste water falling through the fluid flow guide member to impinge the inner surface of the jaw members by centrifugal force Livestock Wastewater Treatment Process. According to claim 1, wherein the BCS / SBR reactor is at least one bio-ceramic tower is installed inside the reactor for the efficient removal of organic matter and nutrients in the livestock wastewater and the bio-ceramic and marine silica and porous within the bio-ceramic tower Livestock wastewater treatment process including the volcanic ash ore (pumice). The system of claim 1, wherein the VSEP membrane separation system is mounted to a frame, a pressure vessel mounted on an upper portion of the frame and storing waste water therein, a motor for vibrating the pressure vessel, and mounted inside the pressure vessel. Livestock wastewater treatment step of preventing the foreign matter caught in the micro-pores by the shear force caused by the vibration and rotation when the motor is driven.