KR100775183B1 - Waste styrene foam use sewage treatment system and method - Google Patents

Abstract

A wastewater treatment apparatus is provided to reduce an operating cost, be completely sealed to reduce the generation of odor, and minimize structure facilities, machinery and equipment by using waste styrene foam as microorganism media and effectively connecting a precipitating process, a filtering process, an activated sludge process, a trickling filter process and a contact oxidation process. An apparatus for treatment of wastewater using waste styrene foam comprises: an air pump tank(25) for pumping compressed air and inflow water by operating a valve; a first diffusing and aerating tank(6) for diffusing the compressed inflow water and air through a lower part of the air pump tank; a first trickling filter reactor(7) having a distributor(9) installed on an upper part thereof to distribute the compressed inflow water and air of the first diffusing and aerating tank; a second diffusing and aerating tank(10) into which the compressed inflow water and air of the first trickling filter reactor are diffused through a lower part of the second diffusing and aerating tank; a second trickling filter reactor(12) having a distributor(22) installed on an upper part thereof to distribute the compressed inflow water and air of the second diffusing and aerating tank; and a final sedimentation tank(15) having an air exhaust port which is formed on a lower part thereof, and through which the compressed air of the second trickling filter reactor is released, and a discharge port formed on an upper part thereof to discharge the inflow water into a natural atmospheric pressure.

Description

Wastewater treatment system and method using waste foaming synthetic resin {WASTE STYRENE FOAM USE SEWAGE TREATMENT SYSTEM AND METHOD}

   1 is a wastewater treatment apparatus using waste foaming synthetic resin according to an embodiment of the present invention

          Side view

   2 is a wastewater treatment apparatus using waste foaming synthetic resin according to an embodiment of the present invention.

          Floor plan

   3 is a wastewater treatment apparatus using waste foaming synthetic resin according to an embodiment of the present invention.

           Detailed view of part (A) shown

<Explanation of symbols for main parts of drawing>

  1: air compressor 2: influent and valve 3: air inlet 4: conveying sludge tube 5: primary settling tank

  6: Primary aerator aeration tank 7: Primary water spray phase reaction tank 8: Backwash air discharge valve 9: Primary distributor 10: Secondary acid aeration tank 11: Secondary porous acid engine 12: Secondary water spray phase reaction tank 13: Air exhaust pipe inlet 14: floating carrier containment membrane B 15: final sedimentation tank 16: air discharge valve with odor remover 17: effluent and valve 18: primary porous acid engine 19: conveying sludge valve 20A: lower part sediment water level indication 20B: upper part wastewater treatment device water level indication 21: Semi-floating carrier particle 22: Secondary distributor 23: Semi-floating carrier containment membrane 24: Water flow direction 25: Air pump tank 26: Treatment water outflow 27: Synthetic resin lattice 28: Nonwoven fabric 29: Plastic clay block 30: Floating for distributor carrier

  In general, wastewater treatment methods include activated sludge method, sprinkling filter method, and catalytic oxidation method. The sprinkling filter method is used to contact the effluent from the primary sedimentation battery with organic matter sprayed upwards on crushed stone or plastic media to help microorganisms grow. Wastewater treatment by the fixed bed method. The advantage of watering is that it is highly adaptable to the load fluctuation of organic materials and does not need aeration facility, which saves facility cost and maintenance cost, does not need sludge conveying device, does not produce sludge bulking, it is easy to operate the facility, but it is difficult to block odor It becomes a habitat for flies, and it is easy to cause the phenomenon of closure of media and if the amount of media is large, the structure of the device is unstable due to the weight.

  The activated sludge method abandons wastewater by air in the aeration tank, and organic matter and dissolved microorganisms ingested or degraded by microorganisms are precipitated in the sedimentation basin. This is called sludge. Some of these sludges are returned to the aeration tank, and the remaining sludges are disposed of through the take-out device and dehydration process to be composted or incinerated and landfilled. The activated sludge method is still widely used because of its high efficiency, and the main processes are conventional waste streams, complete mixing, tapered aeration, stage injection bubbler, crystal aeration, and contact stability. When it is made, it is weak to load fluctuations and requires professional management for adjusting sludge and air volume. It is not only energy-intensive but also operation of waste sludge and bulking due to operation of compressor and aeration device.

  There is a contact oxidation method that utilizes the advantages of the treatment efficiency of the spraying method and the activated sludge method, which is called the fixed bed activated sludge method, and is a method of treating wastewater using a biofilm such as a rotating disc method or a spraying method. It is a method of removing the proliferated microorganisms and organic decomposition products in the wastewater by simultaneously giving up the resulting biofilm contact with the wastewater. This method has a disadvantage in that it is difficult to give up uniformly in the aeration tank and has low adaptability to load fluctuations, so that the contact material is partially closed due to a large amount of wastewater inflow, resulting in a poor treatment efficiency.

  The present invention is an integrated wastewater treatment apparatus for treating wastewater by using microbial carriers made of waste styropol, which is characterized by the light specific gravity of waste sciropol, which is discarded to significantly increase the purification efficiency of wastewater. By using a carrier that is half-weighted by specific gravity, it is effectively connected with methods such as sedimentation method, filtration method, activated sludge method, sprinkling water phase method, and catalytic oxidation method, which minimizes the facilities and machinery of the structure and completely eliminates odor. Its purpose is to reduce generation, reduce operating costs and provide a semi-permanent wastewater treatment system.

  In order to achieve the above object, the present invention adds another means and method to its own patent registration No. 0499914 (Welding Siropol, Insulating material manufacturing method using waste rigid urethane foam, and Insulating material manufactured by such method) Semi-floating flow Phase microbial carriers can be made. Its manufacturing method adds fiber reinforcement and cement waterproofing agent to increase the tensile strength by crushing waste Schiropol into 20mm ~ 35mm, and makes a mixture of cement, sand and water in the ratio of 3: 2: 1 25% of the cement mixture is placed in a rotary drum, which is then gelled or semi-liquid for 2 ~ 3 minutes.Then, it is put into a mold and compressed and fixed by vibration compression of 125㎢. It is a method of making the size of gravel and small gravel and heating and melting the crushed surface and coating the surface with adhesive and activated carbon particles to make semi-floating fluidized bed microbial carrier with wide surface area. It's okay.

  The adhesive is selected from adhesives such as Styropol Bond, Sealant, Epoxy, and Polyurethane. The activated carbon particles are 1.5mm ~ 2.5mm, and they are used as media that can be adsorbed by microorganisms such as charcoal and sawdust with activated carbon particles or wood and reed. A method of mixing and adhering an adhesive and activated carbon particles to dry and a method of applying an adhesive to the surface of the microbial carrier in advance, and then dispersing or contacting activated carbon particles or the media, and then drying and coating at room temperature or high temperature. The final specific gravity of making microbial carriers is 0.8 ~ 1.2, making it a semi-floating carrier that is lighter than water. The specific gravity of 0.8 ~ 1.2 becomes a structure that floats in water of 650 ~ 850kg in 1㎥ by weight when compressed to 25% of the volume of cement mixture and waste sciropol bead. .

  These semi-floating fluidized bed microbial carriers have a high compressive strength of 50 to 74 kg per cm 2, which makes them highly efficient media that do not collide with each other due to strong air aeration and flow rate and are not damaged or impaired. By using the characteristics of light specific gravity such as Schiropol and combining the strong compressive strength of concrete, it becomes semi-fluid floating carrier used in semi-permanent wastewater treatment system. The use of such a carrier is not limited to the wastewater treatment apparatus of the present invention. In regard to the microbial carrier using waste foaming synthetic resin and the wastewater treatment apparatus using the same, the configuration of the treatment apparatus includes influent water and valves (2), air compressors (1), backwash air discharge valves (8), and odors outside the wastewater treatment apparatus. The air discharge valve 16 with the eliminator, the return sludge tube 4, the outflow water and the valve 17 are provided, and the internal treatment tank structure includes the primary sedimentation tank and the valve 5, the primary diffuser aeration tank 6, and the first water spray. The present invention relates to a wastewater treatment apparatus and a method using waste foaming synthetic resin consisting of a filter reactor (7), a secondary acid bubble tank (10), a secondary water spray filter (12), and a final settling tank (15).

  Among the internal treatment structures, the microbial carriers prepared as described above were 45 to 60% in the primary aeration tank (6), the secondary acid aeration tank (10), the primary spraying water phase reaction tank (7), and the secondary acid aeration tank (10). By providing 70 ~ 85% of pressure and pressurizing air, each reactor is operated by opening and closing operation of pneumatic pressure and valve without any mechanical device, and it is provided with wastewater treatment device, which consists of integrated wastewater treatment tank where wastewater is finally processed. .

  The present invention will be described in detail with reference to the drawings. 1 is a side view showing a wastewater treatment apparatus using waste foaming synthetic resin according to an embodiment of the present invention, Figure 2 is a plan view showing a wastewater treatment apparatus using a waste foaming synthetic resin according to an embodiment of the present invention, Figure 3 It is a detailed view of the (A) part which shows the wastewater treatment apparatus using waste foaming synthetic resin which concerns on the Example of this invention.

  As shown in FIG. 1, when the inflow water enters through the inflow water and the valve 2, the air compressor 1 flows in through the lower end of the primary aeration tank 6 and the compressed air is the primary porous acid pipe. Through (18), the contact aeration is carried out to the semi-counseling particle 21 inside the primary aerator aeration tank 6. The influent flowing through the primary aerator aeration tank (6) through the primary distributor (9) in the upper portion of the primary water spray filter (7) is inlet water is sprinkled evenly to the semi-floating carrier particles as a natural fall.

  On the other hand, the compressed air pushes down the inflow from the top of the first spraying water reactor (7) to the inlet of the secondary porous acid pipe (11) at the bottom of the secondary acid tank (10) to pressurize the air inside the first water spraying tank and This increases and facilitates the reaction of the microorganisms.

  Inflow and compressed air entering through the secondary porous acid engine 11 at the lower end of the secondary diffuser aeration 10 and inflow and compressed air entering through the primary porous acid pipe 18 at the lower end of the primary diffuser aeration tank 6 are introduced. The secondary reaction is carried out through the secondary acid bubble tank (10), the secondary water spray phase reaction tank (12), and the final sedimentation tank (15).

  The influent reaching the final settling tank 15 is finally settled and discharged through the effluent and the valve 17, and the compressed air pushes the influent up to the inlet of the air exhaust pipe 13 at the lower end of the secondary spraying filter reactor 12 to cause odor. It is characterized in that the discharge to the atmosphere through the air discharger (16) with a remover, the treatment process can be added to the inside or installed in parallel to obtain the treatment efficiency.

  In particular, in the above process, the air is forced to push down the treated water, thereby smoothing the supply of oxygen in each treatment tank.

The oxygen supply by air bubbles in the water is used only 5% and wasted, but the wastewater treatment apparatus of the present invention is energy-saving by the efficient operation of the compressor, and the smell of the odor is treated as a closed treatment tank. Will be reduced.

  In addition, because the semi-floating carrier is only 30% of the weight of gravel or crushed stone, it can withstand the weight even if a large amount of lamination is made, and the surface area is 70 ~ 120% higher than that of gravel or crushed stone. It can be used in mass production because it is inexpensive and uses common Schiropol and cement.

  The semi-injured body is Schiropol and a small amount of cement, which has no toxic effect on the growth of microorganisms, and it can be a semi-permanent carrier because there is no corrosion of the chemical cement of the semi-injured body by the cement waterproofing agent when manufactured with molten coating film. Activated carbon, etc., increases the surface area, making it easier to attach and increase microorganisms, resulting in higher treatment efficiency. Even if the amount of wastewater is reduced or the air supply is stopped for a long time with a large amount of microorganisms attached, the attached microorganisms decompose and resynthesize. The microbial self-extinguishment occurs and eventually decomposes into carbon dioxide gas and water, and thus various waste water can be purified without using chemicals or physical action.

  Among the above methods, a method of melting the surface by crushing the lightweight concrete insulation material disclosed in the inventor's patent No. 0199914 without gravel size without using an adhesive or the like is preferable.

  On the other hand, do not supply compressed air periodically or because of failure of air pump.

However, the natural water pressure causes the first water spray phase reaction tank (7) and the second water spray phase reaction tank (12) to enter the wastewater treatment device water level indicator (20B) at the upper part, which can be converted into an anaerobic reaction tank. In the aerobic living environment of the reaction tank (7) and the secondary water spray phase reaction tank (12), there is also an advantage that can easily desorption of the overgrown microorganisms to save energy by stopping the operation of the air compressor.

  When the physical action of compressed air occurs in the treatment tank, the amount of air must be supplied by controlling the minimum amount of air required to supply oxygen to the entire treatment tank. In the long run, when the suspended solids accumulate and reach the allowable loss head, backwashing is necessary. Do.

  In this device, however, the back flushing air discharge valve (8) is periodically opened, and if the compressed air inside the wastewater treatment system is rapidly discharged to the outside, the first spraying phase reaction tank (7), the second diffuser aeration tank (10), and the second spraying water are discharged. Since the compressed air of the filter reactor 12 and the final sedimentation tank 15 are strongly discharged, the fluid carrier, the air and the waste water fluctuate strongly, so that backwashing can be performed. Therefore, the automatic opening and closing of the air discharge valve 8 may be automatically set to periodically backwash according to the increase and decrease of the inflow water. In this case, the method and the reason why the backwashing is generally omitted will be omitted.

  Compared to the conventional method, the physical action of the compressed air is activated sludge reaction tank is aeration aerobic microorganisms are kept in a suspended state as the organic waste water is introduced into the aeration, there are aerobic and mechanical formula.

  In the conventional activated sludge method, the treated water that has been abandoned has been generally used to separate the treated water and microorganisms from the sedimentation basin, some microorganisms are returned to maintain the concentration, and the other is discarded, but in the present invention, air pushes the treated water. It is characterized by the continuous operation of the inorganic and organic nutrients for the growth of microorganisms by the characteristic operation of the first spraying water reactor (7) and the second spraying water reactor (12).

  On the other hand, the inflow water passing through the primary acid bubble tank (6) reaches the primary distributor (9) installed in the upper end of the primary water spray filter (7). In the secondary aerator aeration tank 10, the compressed air and the treated water are covered with a nonwoven fabric 28 or the like on the synthetic resin lattice 26, as shown in the detail of the portion (A) of FIG. It is a device that is uniformly sprayed in the treated water outflow direction 26 through the treated water inflow direction 25 in the primary distributor (9).

  The role of the treatment tank can efficiently increase the influent water flowing through the facility and

  It is simple to install and it is a reaction tank that can maintain a constant effluent water quality as a characteristic of a large amount of semi-floating carrier even if the change of influent concentration is large. The characteristics of the reactor are that the physical properties of the media are the combination of concrete and plastic, and the hydraulic load is 0.16 ~ 0.46 gal / ft² · d and the BOD loading is 60 ~ 120 lb / 10³ft³ · d.

  The depth of the media is 15 ~ 40ft² (4.5m ~ 12m) by strength, the transport cost is 1-4, there is no flies of frost, and the semi-coated stalks are continuously detached and the BOD removal efficiency is 85 ~ 95%. The waste water can be highly treated with high nitrogen and phosphorus in the effluent.

  In addition, the components of the air that passed through each treatment tank are absorbed, and in addition to the remaining oxygen, most of the nitrogen, methane, and carbon dioxide are mostly odors in the first spraying tank (7) and the second spraying tank (12), which are biological methods. Almost all treated and malodorous volatile organic compounds are released into the atmosphere.

  Finally, the fine plug and the turbidity material are finally removed from the first spraying tank reaction tank (7) and the second spraying tank reaction tank (12), and precipitated and discharged after settling in the final settling tank (15).

  The temperature environment of each wastewater treatment tank greatly affects the performance of the process. If the design temperature is not set properly, the activity of microorganisms tends to be poor at low temperatures in the winter. Alternatively, the amount of organic matter in the process can be increased or covered. There is a way to maintain the temperature, and in high temperature specific wastewater and summer wastewater, it is kept at a low temperature by reducing the supply of organic matter and increasing the amount of air.

  This process consists of removing nutrients nitrogen and phosphorus by biological method without installing advanced processing, and it is effective to remove nitrogen and phosphorus by simple process that does not require injection of chemicals or lime. This reduces processing costs and reduces operational and management problems.

  Existing biological nitrogen and phosphorus mixing process shows that various reaction processes such as SBR (Seqencing Bactch Reactor), which discharges wastewater by filling the reactor with anaerobic and aerobic agitation, and then settles and discharges them It is used in the process of eluting carbon, nitrogen and phosphorus in anaerobic stirring and removing carbon, nitrogen and phosphorus in aerobic stirring. It is known that denitrification of nitrogen occurs well depending on the reaction time.

  As the nitrogen and phosphorus removal can be removed only after a long time due to repetitive anaerobic and aerobic, the repetitive treatment process is carried out in the present treatment process is simple, but the effective use of each reaction tank with a large surface area carrier Because it is lighter than wastewater treatment equipment, wastewater is treated with high amount and finally discharged to natural atmospheric pressure without air pressure.

  The conveying method of the conveying sludge is sent to the air pump tank 25, the sludge precipitated in the first spraying filter (7) and the secondary aerator aeration tank (10), and the method is an air discharge valve (16) with odor removal When the outlet valve is closed and the return sludge valve 19 and the air inlet 3 are opened, the sludge at the lower end of the treatment tank can be simply conveyed to the influent tank by changing the final discharge direction of the compressed air. The operation of opening and closing the conveying sludge valve 19 and the air inlet 3 can be set to automatic.

  In another conveying method, the conveying method sends the sludge settled from the primary spraying filter (7) and the secondary diffuser aeration tank (10) to the air tank pump (25), and the conveying sludge valve (19) and the air inlet (3). Opening the water inlet water including sludge at the lower end of the treatment tank can be simply conveyed to the inlet water tank by the force of compressed air.

  In the conveying operation, the primary settling valve 5 is automatically closed by air pressure through the primary porous acid engine, and the influent and the valve 2 are also automatically closed.

  When the waste sludge is trapped at the lower end of the secondary spraying water phase reaction tank 12 and the final sedimentation tank 15, the sludge that is trapped to process the final waste sludge through external discharge is firstly settled precipitating valve (5) and the first diffuser aeration tank (6). ), It is more economical to treat the waste sludge than to the return sludge because the rate of decomposition is higher by the microorganism than the sludge precipitated or activated in the first spraying water reactor (7) and the secondary acid bubble tank (10).

  As an integrated wastewater device, it uses sedimentation method, filtration method, activated sludge method, sprinkling water filtration method, and catalytic oxidation method, which are used in the wastewater treatment system by using the characteristics of light specific gravity such as waste Schiropol, which are discarded to increase the efficiency of wastewater significantly. Wastewater treatment methods such as waste water treatment methods effectively connected, minimizing the mechanical device of internal structure, minimizing odor generation by completely enclosed type, and reducing operating cost and semi-permanent wastewater treatment device to stabilize and economicize wastewater treatment. It can work.

  Patent No. 0499914 (Floating Schiropol, Method for Manufacturing Insulation Using Wasted Polyurethane Foam and Insulation Material Prepared by Such Method), further comprising the step of crushing and melting the multi-use insulating material to make a microbial carrier to significantly increase the purification efficiency and treatment device The present invention relates to a wastewater treatment apparatus and method using waste foaming synthetic resin, characterized in that the occurrence of odor is reduced by minimizing the facilities and machinery and completely enclosed.

Claims (7)

   In a wastewater treatment system using waste foaming synthetic resin, an air pump tank in which compressed air and inflow water act as a pump, a primary aerator aeration tank in which compressed inflow water and air flow through a lower end of an air pump tank, and the primary The first spraying water phase reaction tank in which the inflow water and air compressed in the aeration aeration tank are installed and distributed at the upper end, and the first spraying water is supplied. A secondary reactor aeration tank in which a compressed water inlet and compressed air flows through a lower end portion, a secondary spraying water reactor in which an inlet water and air compressed in the secondary aerator tank are installed at a top portion of the secondary reactor, and the secondary water spray. The compressed air in the filter reactor is discharged through the air outlet installed in the lower end and the waste water treatment apparatus using waste foaming synthetic resin, characterized in that discharged to the natural atmospheric pressure in the final settling tank provided with the outlet in the upper end.   The wastewater treatment apparatus using waste foaming synthetic resin according to claim 1, wherein a porous acid pipe is installed to supply pressurized dissolved oxygen to the lower part of the primary and secondary aeration tanks filled with 45 to 60% of the microbial carriers. .   The method of claim 1, wherein the distributor is installed at the top of the first and second spraying tanks filled with 70 to 85% of the microbial carriers, and the compressed air is sprayed into the space where the inflow water is pushed down to create an aerobic microbial growth environment. Wastewater treatment device using waste foaming synthetic resin.   The wastewater treatment using waste foaming synthetic resin according to claim 1, wherein a conveying sludge pipe is installed at the lower end of the secondary aerator aeration tank to convey sludge and inflow water deposited in the first water spraying phase and the secondary aerator aeration tank to an air pump tank. Device.  In the wastewater treatment method using waste foaming synthetic resin, compressed air and inflow water act as a valve operation, and the compressed inflow water and air are scattered in the primary diffuser aeration tank at the bottom of the air pump tank, and the primary diffuser aeration tank. Compressed air and influent Water is sprayed in the first spraying water reactor equipped with a distributor at the end and sprayed into the space where compressed air pushes down the influent, creating an aerobic microbial growth environment;   Aeration in the secondary aeration aeration tank through the lower portion of the first water spray phase reaction tank, and the air and inflow water compressed in the secondary aeration aeration tank are sprayed in a second water spray phase reaction tank in which a distributor is installed at an upper end thereof so that the compressed air is introduced into the inlet water. It is sprayed in the pushed-out space to create aerobic microbial growth environment again, and the air compressed in the secondary water spray reactor is discharged through the air outlet installed at the lower end, and the influent is discharged to the natural atmospheric pressure from the final settling tank equipped with the outlet at the upper end. Wastewater treatment method using waste foaming synthetic resin, characterized in that.    The anaerobic microorganisms according to claim 5, wherein the primary aeration tank and the secondary aeration tank contain 45-60% of anti-injured microbial carriers, and 70-85% of the primary and secondary spray reactors are pressurized with air pressure and influent. Wastewater treatment method using waste foaming synthetic resin, characterized in that the aerobic microorganisms create a growth environment.   The semi-floating microbial carrier according to claim 6 has 20mm to 35mm of particles crushed waste foamed synthetic resin, final specific gravity of 0.8 ~ 1.2, specific gravity of 1m3 to 650 ~ 850kg, final compressive strength of 50 ~ 1cm2. Wastewater treatment method using waste foaming synthetic resin, characterized in that the use of 74kg semi-floating fluidized bed microbial carrier.

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