JP2012217988A - Simplified wastewater treatment apparatus and wastewater treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wastewater treatment apparatus and a wastewater treatment method specialized in simplicity while keeping low an introduction cost and a running cost regardless of industrial wastewater, domestic wastewater, river wastewater, etc., concerning coagulation wastewater treatment.SOLUTION: The wastewater treatment apparatus includes a flexible coagulation and precipitation treatment tank comprising an upper lid part having a raw water supply port and a treated water drain port, a lower bottom part that receives coagulated and precipitated sludge, and a flexible part that connects the upper lid part and the lower bottom part; a protective cylinder; a branch treatment valve for limpid water and turbid water, a pH adjustment tank; a water purifying filter; and an ozone oxidation treatment tank. The coagulation and precipitation treatment tank, the protective cylinder, and the ozone oxidation treatment tank are three-dimensionally constituted and arranged to simplify a facility and to keep the introduction cost low, and condensation treatment by a condensing agent, coagulation treatment by a polymer coagulant and adsorption-precipitation acceleration by activated carbon are simultaneously performed to attain high speed treatment of a coagulation and precipitation treatment process. Since precipitated sludge finished with the coagulation and precipitation treatment has residual coagulation capacity and adsorption capacity, the precipitated sludge is put to residual use without being discharged together with treated water to keep the running cost low.

Description

  The present invention relates to a simplified wastewater treatment apparatus and a wastewater treatment method that are not trapped by factory wastewater species, domestic wastewater, river wastewater, and the like for pseudo-collected wastewater treatment and specialized in simplicity.

  Conventional wastewater treatment facilities consist of an initial settling basin, reaction tank, final settling basin, disinfection equipment, etc., and purify sewage to a certain standard.

  In factory wastewater treatment, activated sludge method, coagulation sedimentation method, oil separation method, neutralization filtration method and others (precipitation method, filtration method, sprinkling filtration method, nitrification activated sludge method) are used depending on the wastewater type. In recent advanced water treatment facilities, standard activated sludge method, long-time aeration method, oxidation ditch method (OD method), batch activated sludge method, single tank anaerobic aerobic activated sludge method (two beat method), An aerobic filter method, a circulating nitrification denitrification method, an anaerobic aerobic filter method, a soil-covered gravel contact oxidation method, an anaerobic anaerobic anaerobic method (A20 method) and the like are also in operation (for example, Non-Patent Document 1). reference.).

  Furthermore, organic wastewater such as livestock wastewater and wastewater that requires decolorization such as paint washing water are separately subjected to decolorization treatment by ozone oxidation, hydrogen peroxide oxidation, ultraviolet oxidation, etc. (for example, Patent Documents 1 and 2). reference.).

  However, these treatment facilities are large and expensive, and are not realistic in small and medium-sized enterprises, livestock farmers, small settlements, and island areas. In addition, there are various processing methods, requiring specialized engineers for operation, and costing. Therefore, secondary contamination due to low-quality chemicals and lack of knowledge has become a problem (see, for example, Non-Patent Document 2). ).

  Japanese Laid-Open Patent Publication No. 2002-239567   JP 2009-274008 A

Fukushima sewerage section WEB homepage site "Sewage treatment method" NNA 2010 November 3rd (Wednesday) 8:30 distribution "(Vietnam, Indochina) Wastewater treatment chemicals cause environmental pollution: low quality and lack of knowledge" Hokkaido Water Exchange Business Cooperative WEB catalog site "Frequent and future flocculants" Loki Techno WEB catalog site "Features of filters by structure"

  In view of the above-mentioned conventional drawbacks, the present invention specializes in simplicity that can not be trapped by factory wastewater species, domestic wastewater, river wastewater, etc. with regard to wastewater treatment, and can keep introduction costs and running costs low. An object of the present invention is to provide a wastewater treatment apparatus and a wastewater treatment method.

  In order to solve the above-mentioned object, the wastewater treatment apparatus of the present invention includes a pseudo collection tank, a protective cylinder, a branching valve for clear water and turbid water, a pH adjustment tank, a water purification filter, and an ozone oxidation treatment tank as basic devices. It is characterized by that. In addition, the simulated collection tank has a raw water supply port and treated water drain, a pseudo-binding agent injection port, a polymer pseudo-collecting agent injection port, an activated carbon injection port, an upper lid with a stirring device, and a pseudo collection sedimentation sludge. It is comprised by the lower part which receives, and the flexible part which connects an upper cover part and a lower bottom part, It is characterized by the above-mentioned.

  The pseudo collection tank is a flexible tank composed of an upper lid, a flexible part, and a lower bottom part. The upper lid is suspended and fixed to a hollow protective cylinder, and the upper part of the protective cylinder is suspended in an ozone oxidation treatment tank. Fixed placement. Moreover, the bottom bottom part of the pseudo-sedimentation treatment tank is hung with a wire to enable vertical movement. Thereby, drainage of the treated water from the tank upper lid can be easily performed by lowering the bottom bottom of the tank by supplying raw water and raising the bottom bottom by pulling up the wire. The wire pulling mechanism is characterized in that it is wound up by an electric winch through a pulley provided at the upper part of the pseudo collection tank.

  According to these inventions, feed of raw water, injection of pseudo-binding agent, injection of polymer pseudo-collecting agent, activated carbon injection, pseudo-synthesizing adsorption by stirring, waiting for settling, and drainage of treated water are performed in one tank of pseudo-settling treatment tank. Therefore, the apparatus becomes simple. Further, by raising the lower bottom by pulling up the wire, it is possible to drain only the upper clear water that has been pseudo-collected and separated from the drain outlet of the upper lid portion of the pseudo-collecting treatment tank. Furthermore, since the pseudo-sedimentation sludge retains the pseudo-collection adsorption capacity, it cannot be discharged together with the treated water and can be used until the pseudo-synthetic collection capacity disappears.

  In the present invention, the pseudo collection tank, the protective cylinder, and the ozone oxidation tank are three-dimensionally arranged. As a result, the facility space can be reduced and simplified. In addition, by arranging the pseudo collection tank in the ozone oxidation treatment tank, the ozone oxidation treatment water functions as buoyancy water, and it is easy to suspend the pseudo collection collection tank having flexibility. Become. In addition, the protection cylinder prevents the pseudo-collection treatment tank having flexibility from being twisted during stirring and from being shaken up and down.

  As the polymer flocculant used in the present invention, it is desirable to use an inorganic polymer pseudo-aggregator. Since the inorganic polymer pseudo-collecting agent can pseudo-collect raw water contaminants without requiring prior neutralization, a raw water concentration adjusting tank is not required. In addition, since the inorganic polymer pseudo-collecting agent is also effective for organic wastewater, a denitrification tank for removing nitrogen in the organic wastewater becomes unnecessary. Furthermore, by controlling the water supply to the pseudo collection tank using the raw water supply meter and the raw water supply control valve, an inflow adjusting tank is not required. As a result, facilities can be simplified and space can be reduced.

  Moreover, in this invention, the pH adjustment tank was arrange | positioned in the back | latter stage of the pseudo collection tank. By using an inorganic polymer pseudo-aggregating agent as the polymer flocculant, the raw water is pseudo-aggregated and precipitated without the need for prior neutralization, and neutralized. Thereby, the neutralizing agent used for pH adjustment of this process can be reduced.

  Furthermore, in this invention, a water purification filter is arrange | positioned in the back | latter stage of a pH adjustment tank, the treated water after pH adjustment is passed through a water purification filter, and it carries out microfiltration. This makes it possible to remove impurities such as turbidity and bacteria that have not been flocked in the pseudo collection process and neutralizer used in the pH adjustment process.

  In the present invention, an ozone oxidation treatment tank is provided at the facility final position. The pseudo-precipitation process described above reduces TN (total nitrogen content), COD (organic and inorganic chemical oxygen demand), BOD (biochemical oxygen demand), etc. In addition to the progress of decolorization due to adsorption, adjustment of the standard value of hydrogen ion concentration in the final pH adjustment process, reduction of SS (floating matter) by microfiltration with a water purification filter, and removal of germs such as E. coli Therefore, sufficient decolorization, sterilization, and DO (dissolved oxygen content) reference value can be achieved with a small amount of ozone.

  Further, the wastewater treatment apparatus of the present invention uses FRP (fiber reinforced plastic) for the pseudo-collection treatment tank upper lid, lower bottom, and protective cylinder, and HDPE (high density polyethylene) for the pseudo-collection treatment tank flexible part, By providing a monitoring window on the side surface of the ozone oxidation treatment tank, visual monitoring inside the pseudo collection tank is possible. This makes it possible to monitor and manage the pseudo-sedimentation treatment process and monitor and grasp the amount of residual sedimentation sludge.

  Furthermore, if a surveillance camera is installed and a remote management facility is provided, it is possible to centrally monitor and manage small-scale enterprises and remote facilities that are not in charge of exclusive wastewater treatment, and perform stable control management.

  The wastewater treatment apparatus of the present invention includes a raw water feed pump, a clear water pump, a discharge water (reuse water) distribution pump, a returned water (turbid water) distribution pump, a pump for removing sedimentation sledge, a chemical tank, a chemical injection device, and a turbidity Meter, pH linear controller, water level meter, stirrer, pulley group, electric winch, ozone generator, incoming water amount meter, fresh water / outflow meter, unclear water (turbid water) outflow meter, raw water supply control valve, treatment A water drainage control valve, etc. were provided as ancillary equipment. Here, by arranging and combining the basic device and the auxiliary device in the form of an upper and lower rack and unitizing the facility, construction and relocation are easy, and the installation space can be reduced, the construction period can be shortened, and the cost can be reduced.

As is clear from the above description, the present invention has the following effects.
(1) Since the basic configuration includes a pseudo collection tank, a protective cylinder, a branching valve for clear water and turbid water, a pH adjustment tank, a water purification filter, and an ozone oxidation tank, the equipment cost is simple and low.

(2) Pseudo-collecting treatment tank is a raw water supply port and treated water discharge port, pseudo-binding agent injection port, polymer pseudo-collecting agent injection port, activated carbon injection port, upper lid part equipped with stirring device, pseudo-sedimentation sludge It is a flexible tank composed of a lower bottom portion that receives the upper lid portion and a flexible portion that connects the upper lid portion and the lower bottom portion, and is characterized in that the lower bottom portion is suspended by a wire and can be moved up and down. By raising the lower bottom by pulling up the wire, only the upper clear water that has been separated by pseudo collection can be drained from the drain outlet of the upper cover of the pseudo collection tank. The pseudo-sedimentation sludge that remains in the bottom bottom still has the ability to adsorb pseudo-collection, so it cannot be discharged together with the treated water and can be used until it disappears. The usage amount of the agent, polymer pseudo-collecting agent and activated carbon is reduced, and the running cost is reduced.

(3) Since the wire pulling mechanism is characterized by winding with an electric winch through a pulley provided at the top of the pseudo collection tank, the mechanism is simple and the equipment cost is low.

(4) It is characterized in that the upper lid part of the pseudo collection tank is suspended and fixed in a hollow protective cylinder, and the upper part of the protective cylinder is suspended and fixed in the ozone oxidation treatment tank. Pseudo-collecting treatment with a flexible protective cylinder that prevents twisting during stirring of the pseudo-collecting treatment tank with flexibility and swaying when moving up and down, and ozone-oxidized water functions as buoyancy water. It is easy to suspend the tank. By arranging the pseudo collection tank, the protective cylinder, and the ozone oxidation tank in a three-dimensional configuration, the facility space can be reduced and simplified, and the equipment cost is reduced.

(5) It is characterized in that the pH adjusting tank is arranged at the rear stage of the pseudo collection tank. By using an inorganic polymer pseudo-aggregating agent for the above-mentioned polymer flocculant, the raw water is pseudo-gathering and pre-neutralizing without the need for pre-neutralization. PH adjustment can be performed. As a result, the amount of the pH adjuster used is reduced, the running cost is reduced, and the pH adjuster chemical tank is small, so that the facility space is reduced and the equipment cost is reduced.

(6) It is characterized in that a water purification filter is disposed at the rear stage of the pH adjustment tank, and the treated water after pH adjustment is passed through the water purification filter for precise filtration. This makes it possible to remove impurities such as turbidity and bacteria that have not been flocked in the pseudo collection process and neutralizer used in the pH adjustment process.

(7) An ozone oxidation treatment tank is provided at the final position of the facility. The pseudo-precipitation process described above reduces TN (total nitrogen content), COD (organic and inorganic chemical oxygen demand), BOD (biochemical oxygen demand), etc. In addition to the progress of decolorization due to adsorption, adjustment of the standard value of hydrogen ion concentration in the final pH adjustment process, reduction of SS (floating matter) by microfiltration with a water purification filter, and removal of germs such as E. coli Therefore, sufficient decolorization, sterilization, and DO (dissolved oxygen content) reference value can be achieved with a small amount of ozone. Thereby, since the amount of ozone used is very small, it is environmentally friendly, and normal air can be used as an ozone-generating raw material, so the running cost is reduced.

(8) FRP (fiber reinforced plastic) is used for the upper lid, lower bottom, and protective cylinder of the pseudo collection tank, and HDPE (high density polyethylene) is used for the flexible section of the pseudo collection tank on the side of the ozone oxidation tank. It is characterized by providing a monitoring window to enable visual monitoring in the pseudo collection tank. As a result, monitoring and management of the pseudo collection process and monitoring and grasping of the amount of remaining settling sludge can be performed, so that stable control and management can be performed.

(9) Raw water feed pump, clear water pump, discharge water (reuse water) distribution pump, return water (turbid water) distribution pump, sediment sledge forced removal pump, chemical tank, chemical injection device, turbidimeter, linear pH adjustment Meter, water level meter, stirrer, pulley group, electric winch, ozone generator, incoming water meter, fresh water / water meter, unclear water (turbid water) water meter, raw water supply control valve, treated water drain control valve, Etc. as an accessory device. These basic devices and incidental devices are arranged and combined in an upper and lower rack shape to unitize the facility. This facilitates construction and relocation, reducing installation space, shortening the construction period, and reducing costs.

  It is a schematic block diagram which shows the wastewater treatment apparatus in embodiment of this invention.   It is a conceptual diagram of the time difference dispersion | distribution parallel process of the pseudo | simulation collection processing process by embodiment of this invention.   It is a control flowchart of the time difference dispersion | distribution parallel processing of the pseudo | simulation collection processing process by embodiment of this invention.   It is a water passage hole diameter of a filter medium (filter) used for a water purification filter, and an adsorption removal object.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a wastewater treatment apparatus in an embodiment of the present invention.
In FIG. 1, a wastewater treatment apparatus according to an embodiment of the present invention includes a tank having a raw water supply port and a treated water drainage port, a pseudo-binding agent injection port, a polymer pseudo-collecting agent injection port, an activated carbon injection port, and a stirring device. Pseudo collection process composed of upper cover parts 1A1, 1A2 and 1A3, tank lower bottom parts 1C1, 1C2 and 1C3 receiving pseudo collection sludge, tank flexible parts 1B1, 1B2 and 1B3 connecting the tank upper cover part and tank lower bottom part A tank 1xx, protective cylinders 21, 22, and 23, a clear water and turbid water branch processing valve VA, a pH adjustment tank 41, a water purification filter 90, and an ozone oxidation processing tank 30 are provided as basic devices.

  The wastewater treatment apparatus according to the embodiment of the present invention includes a raw water feed pump M1, a clear water pump M2, a discharge water (reuse water) distribution pump M3, a return water (turbid water) distribution pump M4, and a precipitation sledge in addition to the basic apparatus. Forcible removal pump M5, chemical tanks YA, YB, YC and YD, chemical injection devices P1A, P2A, P3A, P1B, P2B, P3B, P1C, P2C, P3C and P4, turbidimeter ZA, pH linear controller ZB, Water level meter ZC, stirrers X1, X2, X3 and XA, pulley group, electric winches D1, D2 and D3, ozone generator 99, raw water feed water meter F1, F2 and F3, fresh water discharge meter FA, unclear water (Turbid water) with water discharge meter FB, raw water supply control valves IV1, IV2 and IV3, treated water drainage control valves OV1, OV2 and OV3, etc. It is equipped as a device.

The wastewater treatment apparatus in the embodiment of the present invention has a three-dimensional arrangement of a pseudo collection tank (reference numeral omitted), a protective cylinder (reference numeral omitted), and an ozone oxidation treatment tank 30. In addition, facilities are unitized by arranging and combining basic devices and auxiliary devices in an upper and lower rack form. This reduces installation space and facilitates construction and relocation.

  The wastewater treatment apparatus in the embodiment of the present invention supplies water to a pseudo collection tank (not shown) by a raw water feed pump M1. The amount of water supply is controlled by a raw water supply amount meter (not shown) and a raw water supply control valve (not shown). Thereby, an inflow adjustment tank is not required and an installation becomes simple.

  Here, if a self-priming centrifugal pump (for example, Yokota's self-priming centrifugal pump-enhanced UHNS type) is used for the raw water feed pump M1, an equipment facility at a location away from the raw water reservoir (tank) is possible. Become.

A pseudo-binding agent, a polymer pseudo-collecting agent, and activated carbon are administered to raw water from a chemical tank (not shown) to perform pseudo-synthesizing adsorption treatment. The doses of the pseudo-binding agent, polymer pseudo-collecting agent, and activated carbon are controlled by a chemical solution injection device (reference number omitted).

  The pseudo-binding agent is used as a pseudo-collecting aid, and causes the solid suspension particles and colloidal particles to be pseudo-set to form micro flocs. The pseudo-binding agent is roughly classified into inorganic and organic, and examples of the organic pseudo-binding agent include polyamine, DADMAC, melamic acid colloid, and dicyandiamide. Inorganic pseudo-binding agents include sulfuric acid band (aluminum sulfate), aluminum salt system of aluminum chloride and PAC (polyaluminum chloride), ferrous salt, ferrous sulfate, ferric sulfate and ferric chloride. However, some water treatment plants have switched pseudo-binding agents from aluminum salt to iron salt because of the suspicion that aluminum is related to Alzheimer's disease. Ferric chloride can lower the pseudo-collection pH and is more effective than aluminum salt for removing arsenic and natural organic matter, so it can be used for pretreatment of seawater desalination facilities using reverse osmosis membranes, and for dewatering sewage sludge and sewage sludge. Although it is also used as a filter aid, it is strongly acidic and highly corrosive, and since it contains chlorine, there are concerns about the cause of dioxin generation when sludge is incinerated. In recent years, polyferric sulfate and iron-silica inorganic pseudobinding agents have been newly proposed. Poly ferric sulfate is recommended as the pseudo-binding agent used in the pseudo collection process according to the embodiment of the present invention. Since ferric sulfate is much less corrosive than ferric chloride, it is less likely to damage wastewater treatment facilities and suppresses metal and concrete corrosion caused by hydrogen sulfide. Incineration of sludge does not cause dioxin generation. Eliminates phosphorus, removes COD and BOD, removes heavy metals, suppresses the generation of hydrogen sulfide, and reacts with sulfur compound odors such as hydrogen sulfide and methyl mercaptan, which easily generate Fe2 + and Fe3 + ions in sewage sludge. Combined with the work as.

  Polymer pseudo-collecting agents are roughly classified into organic and inorganic types. Organic polymer pseudo-gathering agents are scientifically created synthetic agents that are divided into cationic (cationic), anionic (anionic) and nonionic (nonionic) properties. Although it is inexpensive, it always requires a neutralizer and a neutralizer. Moreover, it is difficult to use for those who have not used it, and includes the risk of secondary contamination. An inorganic polymer pseudo-collecting agent is a combination of a water-soluble salt and an organic material (mixing), and its use is not so difficult compared to an organic material. However, it is often difficult to obtain results that satisfy the properties of expensive and diverse wastewater compared to organic systems. In some cases, a neutralizing agent and a neutralizing device are required. Prof. Yoshida of Muroran Institute of Technology, Hokkaido, and Dr. Co-Naraku Engineering, Deputy Director of the Hokkaido Water Change Business Cooperative Technology Research Institute, partnered as a polymer pseudo-collecting agent used in the pseudo-precipitation treatment process according to the embodiment of the present invention. The PH neutral inorganic pseudo-collecting agent developed in the above is recommended. This PH neutral inorganic pseudo-collecting agent is a non-harmful inorganic polymer pseudo-collecting agent that heats natural minerals, the main raw material, at 800 ° C or higher, removes harmful substances and mineralizes them, and then processes and blends other natural ingredients. Even if it is used in large quantities, there is no concern about pollution, and it can be used for various types of wastewater. Moreover, it can respond also to the treatment of waste water and seawater with low water temperature. Although the inorganic polymer pseudo-collecting agent is expensive, it eliminates the need for a neutralizing agent and the like, and thus eliminates the need for a pre-raw water concentration adjustment tank and can effectively handle organic waste water. Since a nitrogen tank or the like is not required, the facilities can be simplified (for example, see Non-Patent Document 3), leading to a total cost reduction.

  Activated carbon is a porous material composed of oxygen, hydrogen, calcium, etc. in addition to most carbon, and has a surface with a fineness of 1 nanometer (parts per million) to 1 micrometer (parts per thousand). Since there are innumerable holes (pores) and the surface area is extremely large, it has the property of adsorbing many organic substances. In addition, since the surface has nonpolar properties, polar molecules having a small molecular weight such as water are difficult to adsorb, and it is easy to selectively adsorb granular organic matter. Utilizing this property, activated carbon is supplied to the raw water in the quasi-collecting treatment tank together with the inorganic quasi-aggregating agent and inorganic polymer quasi-collecting agent. Suspensions that have become floccated in the collection form larger flocs by adsorption with activated carbon, accelerating the suspension separation and sedimentation of flocs in raw water. The activated carbon used here is preferably a fine powder.

  After stirring for a certain period of time with a stirrer (not shown) provided in the upper lid portion (not shown) of the pseudo collection tank, the system is stopped and waits until the flocked suspended substance settles.

  After allowing the suspended solids to settle sufficiently by standing for a predetermined time, the wire is wound up with an electric winch (not shown) to raise the lower bottom part (not shown) of the pseudo collection tank to a predetermined height, and the upper cover (not shown) Drain the water from the treated water outlet. As a result, the supernatant treated water that has been subjected to the quasi-collection treatment can be easily discharged, and the settled sludge can remain in the lower bottom portion (reference numeral omitted) of the quasi-collection treatment tank. The remaining settled sludge still has the ability to adsorb pseudo-collection, and by using this until it disappears, the amount of inorganic artificial binder, inorganic polymer pseudo-collector and activated carbon used. Therefore, the running cost is low and the apparatus cost is low.

FIG. 2 is a conceptual diagram of time-difference parallel processing in the pseudo collection process according to the embodiment of the present invention. FIG. 3 is a control flowchart of the time difference distributed parallel processing in the pseudo collection and sedimentation processing step according to the embodiment of the present invention.
The quasi-collected sedimentation process is treated as 3 cycles of raw water supply, stirring and settling standby (indicated as pseudo-collected sediment in the figure) and treated water drainage (indicated as clear water drainage in the figure) as one cycle. The processing efficiency is increased by performing time-difference parallel processing in the pseudo collection tank.

Here, assuming that the processing capacity of one pseudo collection tank according to the present embodiment is 1 m ³ and one cycle (raw water supply, stirring and settling standby, drainage of treated water) is 6 minutes, “1 m ³ * 6 Min / cycle * 3 tank ≈30 m ³ / hour (* 24 hours ≈720 m ³ / day) ”.

  The treated water discharged from the pseudo collection tank (not shown) is branched into clear water and turbid water by the branch processing valve VA of clear water and turbid water, and the clear water is guided to the pH adjustment tank 41 in the next process. The turbid water is returned to the raw water reservoir (tank) via the temporary return tank 51. In the present embodiment, a turbidimeter ZA is provided for switching control of the branch processing valve VA.

  Moreover, in this embodiment, the clarified water amount measuring meter FA and the unclear water (turbid water) amount measuring meter FB are provided in front of the branch processing valve VA. The ratio of the amount of the clear water and the amount of unclear water (turbid water) to the raw water supply is measured so that the dosage of the inorganic pseudobinding agent, the inorganic polymer pseudocollecting agent, and the activated carbon can be controlled.

  The temporary return water standby tank 51 is provided with a waste sledge removal net filter 52 to remove and collect the waste sledge so that the sledge does not flow into the raw water reservoir (tank).

  In the present embodiment, the pH adjustment tank 41 is provided in the subsequent stage of the pseudo collection tank (reference numeral omitted). Since the pH neutralization adjustment is advanced in the above-described pseudo collection process, the amount of the neutralizing agent used for the final pH adjustment can be reduced. The neutralizing agent used at this time is preferably a pH (+) regulator of the main component anhydrous sodium carbonate when acidic, and a pH (-) regulator of the main component sodium bisulfate when alkaline (for example, Nissan Chemical Industries, Ltd.). Made PH plus / minus regulator.). These adjusting agents are used as a pH adjusting agent for pools, and are friendly to the human body (ecological) environment.

  In addition, the pH neutralization process is a nonlinear process in which the process gain is large near the neutralization point and the deviation is large. When tuning is performed near the neutralization point with the pH linear controller ZB, the response becomes poor at a large deviation. When tuning is performed outside the neutralization point, vibration occurs when the loop gain exceeds 1. In the embodiment of the present invention, a non-linear (dead zone) block is used to reduce the gain of the controller near the neutralization point so that the loop gain is uniform over the entire range so that stable control can be performed. .

  In the present embodiment, the treated water after pH adjustment is guided to the water purification filter 90 and the ozone oxidation treatment tank 30 by the clear water pumping pump M2.

  FIG. 4 shows the diameters of the water passage holes of the filter medium (filter) used in the water purification filter 90 and the objects to be removed by adsorption. In this embodiment, water is passed through a water purification filter 90 and the treated water after pH adjustment is microfiltered.

  The water purification filter includes a spool type, a roll type, a surface type, a depths type, and an adsorption type depending on the filter (filter material) structure (for example, see Non-Patent Document 4). The thread-wound type is characterized in that the thread is wound with a structure (filtration accuracy gradient) that gradually becomes finer as it goes from the primary side to the secondary side of the filter, and filtration is performed using the thickness of the filter medium. The roll type has a structure in which several types of non-woven fabrics with different fiber diameters are wound into a roll shape, and has a filtration accuracy gradient that is coarse on the primary side and becomes finer as it advances to the secondary side. It is characterized by performing. The surface type is characterized in that the non-woven fabric is processed into a pleated shape to increase the filtration area and perform filtration on the surface of the filter medium. Depspries type pleats together several types of non-woven fabrics with different fiber diameters to achieve the excellent filtration accuracy gradient that is the advantage of the roll type, while realizing the wide filtration area that is the advantage of the pleat type, Filtration is performed according to the thickness of the surface and the filter medium. In the adsorption type, in addition to physical filtration through the inter-fiber space of the filter medium, it has an adsorption function by the action of filter aids (activated carbon, diatomaceous earth, pearlite, etc.) contained in the filter medium.

  In the embodiment according to the present invention, a Q flow type manufactured by Loki Techno Co., Ltd. is recommended as a filter (filter medium). The Q flow type has a larger inner and outer diameter than the normal spool type and pleat type, and can flow four times the flow rate (maximum flow rate: 160 L / min) compared to normal cartridges. By performing the dispersed water flow according to the above, it is possible to secure a flow rate necessary for the embodiment according to the present invention.

  In addition, a pseudo-collecting treatment tank (symbol omitted) is treated with an inorganic pseudo-binding agent, a pseudo-collecting treatment with an inorganic polymer pseudo-collecting agent, and an adsorption sedimentation acceleration process with activated carbon. Since the branched and clear water is filtered, the running cost is reduced because there are few adsorption removing substances, the flow rate is reduced due to filter clogging, and the period of use until the recommended differential pressure for filter replacement is extended.

  In the present embodiment, the ozone oxidation treatment tank 30 is arranged at the subsequent stage of the water purification filter 90, and the ozone oxidation treatment of the final process is performed. As described above, TN (total nitrogen content), COD (organic matter, inorganic chemical oxygen demand), BOD (biochemical oxygen demand), etc. have been reduced by the pseudo collection process. In addition to the progress of decolorization due to dye adsorption by activated carbon, adjustment of the standard value of hydrogen ion concentration in the final pH adjustment process, reduction of SS (floating matter) by microfiltration with a water filter, and removal of bacteria such as E. coli Therefore, it is possible to perform final sterilization and final decolorization with a small amount of ozone. Thereby, since the amount of ozone used is very small, it is environmentally friendly, and normal air can be used as an ozone-generating raw material, so the running cost is reduced.

  After the ozone oxidation treatment, the discharged water (recycled water) is discharged from the outlet 92 and discharged to the discharge channel or distributed to the reused water storage tank. This embodiment is equipped with a discharge water (reuse water) delivery pump M3. Thereby, it is possible to cope with a case where the water discharge channel or the reused water storage tank is in a remote location.

  In the present embodiment, FRP (fiber reinforced plastic), pseudo-precipitation sedimentation tank flexible part (reference abbreviation) on the upper lid (reference omitted), lower bottom (reference omitted), and protective cylinder (reference omitted) of the pseudo-collection treatment tank HDPE (High Density Polyethylene) is used, and a monitoring window is provided on the side surface of the ozone oxidation treatment tank 30 so that the inside of the pseudo collection tank can be visually observed. Thereby, it becomes possible to easily grasp the amount of residual sludge. Residual sludge exceeding the specified amount is sucked by the sedimentation sledge forced removal pump M5 and delivered to the temporary return water standby tank 51.

  Although not shown, if a surveillance camera is installed and a remote management facility is provided, it is possible to centrally monitor and manage small-scale enterprises and remote facilities that are not in charge of exclusive wastewater treatment, and perform stable control management.

  The present invention is useful for various factory wastewater treatment, domestic wastewater treatment, river wastewater purification, and the like because it is not trapped by wastewater species for pseudo collection wastewater treatment.

  Moreover, since this invention is also provided with the ozone oxidation processing function, it is useful also for organic wastewater treatment, such as livestock wastewater which needs decoloring.

  In the present invention, as shown in FIG. 1, the basic device and the auxiliary device are arranged and combined in an upper and lower rack shape. The lower part and the upper part can be separately mounted and transported, and it is useful for securing simple drainage and temporary living water by a temporary facility in a stricken area.

  Moreover, it is also easy to secure drinking water from seawater by setting a simple osmosis filtration membrane device in the subsequent stage of the wastewater treatment apparatus of the present invention. This is useful for securing a living area in the island area.

1A1, 1A2, 1A3 Pseudo-collection treatment tank upper lid portion 1B1, 1B2, 1B3 Pseudo-collection treatment tank flexible portion 1C1, 1C2, 1C3 Pseudo-collection treatment tank lower bottom parts 21, 22, 23 Protection cylinder 30 Ozone oxidation treatment tank 31 , 32, 33 Monitoring window 41 pH adjustment tank 51 Temporary water return tank 52 Waste sledge removal net filter 71 Facility mount lower stage 72 Facility mount upper stage 73 Facility mount top 90 Clean water filter 92 Discharge water (reuse water) outlet 99 Ozone generation Equipment D1, D2, D3 Electric winch F1, F2, F3 Raw water feed water meter FA Clear water drainage meter FB Unclear water (turbid water) waste water meter IV1, IV2, IV3 Raw water feed control valve OV1, OV2, OV3 Treated water drainage control Valves X1, X2, X3 Stirrer XA Stirrer M1 Raw water feed pump M2 Water pump M3 Discharge water (reuse water) delivery pump M4 Turbid water return pump M5 Precipitation sledge forced removal pumps YA, YB, YC Chemical liquid tank YD Chemical liquid tanks P1A, P2A, P3A Chemical liquid injectors P1B, P2B, P3B Chemical liquid injectors P1C , P2C, P3C Chemical solution injection device P4 Chemical solution injection device GA Glass tube VA Clear water and turbid water branching valve ZA Turbidimeter ZB pH linear controller ZC Water level meter PL1 Pipe PL2A Pipe PL2B Turbidity measurement bypass pipe PL2C, PL2D Pipe PL3 , PL4, PL5 piping

Claims (11)

  A simple, low-cost facility that is composed of a pseudo collection tank, a protective cylinder, a branching valve for clear water and turbid water, a pH adjustment tank, a water filter, and an ozone oxidation tank. Waste water treatment equipment.   The simulated collection tank is a raw water supply port and treated water discharge port, a pseudo binder injection port, a polymer pseudo collection agent injection port, an activated carbon injection port, an upper lid with a stirring device, and a bottom receiving pseudo collection sediment sludge. The simplified tank according to claim 1, wherein the flexible tank is composed of a bottom part, a flexible part connecting the upper cover part and the lower bottom part, and the lower bottom part is suspended by a wire so that it can be moved up and down. Waste water treatment equipment. By raising the lower bottom by pulling up the wire, only the upper clear water separated by pseudo collection can be drained from the drain port of the upper lid of the pseudo collection tank, and the pseudo collection sludge remaining on the lower bottom has the ability to adsorb pseudo collection. Since it remains, it is not discharged together with the treated water, and it is used until the capacity to absorb pseudo-collection is lost. The simplified wastewater treatment apparatus according to claim 1, wherein the simplified wastewater treatment apparatus is lowered. Simplified equipment by supplying raw water, artificial binder injection, polymer pseudo-collector injection, activated carbon injection, pseudo-settling adsorption by stirring, waiting for settling, and draining of treated water in one tank The simplified wastewater treatment apparatus according to any one of claims 1 to 3, wherein   The simple wastewater treatment according to any one of claims 1 to 4, wherein the wire pulling mechanism is simple and has a low equipment cost, wherein the wire pulling mechanism is wound up by an electric winch through a pulley provided on the upper part of the pseudo collection tank. apparatus. Pseudo-collection treatment tank where the upper cover of the pseudo collection tank is suspended and fixed to a hollow protective cylinder, and the upper part of the protection cylinder is suspended and fixed in the ozone oxidation treatment tank, and the protection cylinder has flexibility. This prevents twisting during stirring and swaying when moving up and down, and the ozone-oxidized water functions as buoyant water, making it easy to suspend and arrange a pseudo-collecting tank with flexibility. 6. The facility cost is reduced by reducing and simplifying the facility space by arranging the collection and sedimentation treatment tank, the protective cylinder, and the ozone oxidation treatment tank in a three-dimensional configuration. 6. Simple type wastewater treatment equipment. A pH adjustment tank is placed after the pseudo collection tank, and the above-mentioned polymer flocculant uses an inorganic polymer pseudo collection agent, so that it is possible to perform the pseudo water collection process without requiring prior neutralization. In addition, since neutralization is also performed, sufficient pH adjustment can be performed with a small amount of adjusting agent, so that the amount of the pH adjusting agent used is reduced, the running cost is reduced, and the pH adjusting agent chemical tank is small. Therefore, the simplified wastewater treatment apparatus according to any one of claims 1 to 6, wherein facility space is reduced and equipment costs are reduced.   A water purification filter is placed in the latter part of the pH adjustment tank, and the treated water after pH adjustment is passed through the water purification filter and finely filtered. The simple wastewater treatment apparatus according to any one of claims 1 to 7, wherein impurities such as a neutralizing agent used in the step can be removed.   An ozone oxidation treatment tank is installed at the final location of the facility, and TN (total nitrogen content), COD (organic and inorganic chemical oxygen demand), BOD (biochemical oxygen demand) are obtained by the above-described pseudo collection process. ), Etc., and decolorization is progressing due to dye adsorption by activated carbon. In addition, SS (floating matter amount) by adjusting the standard value of hydrogen ion concentration in the final pH adjustment process and microfiltration with a water purification filter. ) And removal of germs such as Escherichia coli, sufficient decolorization, sterilization, and standardization of DO (dissolved oxygen) can be achieved with a small amount of ozone, and the amount of ozone used is extremely small. The simple wastewater treatment according to any one of claims 1 to 8, characterized by being environmentally friendly and capable of using normal air as a raw material for generating ozone, thereby reducing running costs. Location. FRP (fiber reinforced plastic) is used for the upper lid, lower bottom, and protective cylinder of the pseudo collection tank, HDPE (high density polyethylene) is used for the flexible collection tank, and a monitoring window is provided on the side of the ozone oxidation tank. In addition, by enabling visual monitoring in the pseudo collection tank, it is possible to monitor and grasp the pseudo collection process and monitor the amount of residual sediment sludge. The simplified wastewater treatment apparatus according to any one of claims 1 to 9. Raw water supply pump, clear water pump, discharge water (reuse water) distribution pump, return water (turbid water) distribution pump, pump for forced removal of sediment sledge, chemical tank, chemical injection device, turbidimeter, pH linear controller, water level Attached with meter, stirrer, pulley group, electric winch, ozone generator, incoming water meter, fresh water / water meter, unclear water (turbid water) water meter, raw water supply control valve, treated water drainage control valve, etc. It is provided as a device. By combining these basic devices and auxiliary devices in a rack form at the top and bottom to unitize the facility, construction and relocation become easy, reducing installation space, shortening the construction period, and reducing costs. The simplified wastewater treatment apparatus according to any one of claims 1 to 10.

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