KR100256828B1 - Waste-water purification disposal plant for lake and reservoir - Google Patents

Abstract

PURPOSE: A wastewater purifying treatment equipment of lake and reservoir is provided, which can purify the stagnated water at lake or reservoir efficiently, quickly and simply, so that the system can save man power and cost of purification and maintenance greatly. The inoculum cultivation tank (10) is equipped with flow control valve and proper amount of wastewater is fed and cultivation is carried out by photosynthesis of propagated various inoculum by gene process. CONSTITUTION: The system comprises the followings: (i) an active inoculum cultivation tank (10) for cultivating inoculum; (ii) a dilution tank (20) for mixing activated inoculum fed by inoculum proper quantity feeder (11) and setting agent fed by proper quantity feeder (12) of settling agent with influent water; (iii) four aeration tanks (30) for aerating the wastewater discharged from the dilution tank (20); (iv) two settling tanks (40) for settling the water; (v) a sludge treatment tank (50) for separating sludge at the settling tank (40); and an effluent tank (60) for discharging finally.

Description

Wastewater Purification System for Lakes and Reservoirs

The present invention relates to a wastewater purification treatment apparatus that improves the water quality by removing various water moss and algae from the lakes and reservoirs that are standing still in a stagnant state. The present invention relates to an apparatus for treating wastewater purification of lakes and reservoirs, by which organic matters and sediments can be easily collected at a deep level, thereby improving water quality.

In general, various kinds of sewage and wastewater, industrial wastewater, and livestock wastewater (hereinafter referred to as "wastewater") are regulated by law to discharge the biochemical oxygen demand (BOD) as low as possible by always purifying for environmental pollution. To this end, water treatment facilities are mandatory in factories and apartment complexes that discharge various wastewater.

That is, animal wastewater and industrial wastewater discharged from dyes and printing plants contain a large amount of organic substances and colors that contaminate the water. If the various wastewaters are discharged without purification, the natural environment is seriously polluted, such as the death of fish in the water, and the ecosystem is gradually destroyed.

Among them, the water of lakes or reservoirs that are stagnant compared to the flowing rivers, rivers, and seawater has a much higher pollution rate, so once it is polluted, it takes considerable time to create a pleasant living environment, as well as purifying the polluted water. There is a problem in that it costs a lot.

Therefore, a lot of wastewater purification equipments are currently being developed. Looking at the structure of the wastewater purification equipment developed in the past, the pulverization tank for crushing suspended solids and contaminants (SS) in the wastewater, anaerobic digestion tank and rot tank for rotating wastewater, It consists of a filtration tank equipped with filtration stones, a sedimentation tank for sedimentation of sludge, and a disinfection discharge tank for discharging and discharging purified water.

When the wastewater purification process is carried out by the above configuration, the efficiency of the wastewater purification process enables to rapidly and continuously cultivate many aerobic microorganisms that lower the biological oxygen demand (BOD) of the wastewater in the contact oxidation tank. It can be said. In other words, as it can increase the culture efficiency of aerobic microorganisms that lower the biochemical oxygen demand (BOD), it is possible to more efficiently remove suspended matter, contaminants and chromaticity contained in the wastewater, so that the purified water can be discharged with good water quality. It is.

In the wastewater hydrolysis purification process of anaerobic organic matter, the limiting rate step of anaerobic digestion is a methane fermentation step. It is a gaseous stage that transforms into a substance that is easy to ingest, which can vary depending on the device of anaerobic digestion.

The organic indicators used by researchers to assess the degree of anaerobicity in wastewater, depending on the type of substrate, are usually biochemical oxygen demand (BOD), chemical oxygen demand (COD), and suspended matter (sediment) mass (SS). , But compared to total organic carbon (TOC), fatty acids, carbohydrates, etc., it is almost impossible to compare all these types.

In particular, the activity of microorganisms is considered to be a very important item in the operation state of digestion and the initial operation state. In general, the activity of sludge can be measured by two methods. That is, the basic substrate degradation activity can be determined in the process state.

Such activity cannot be evaluated by representative microorganisms, and it should be based on measuring the effect state of influent toxicity according to the degree of activity, and there is a concern that the limit of methane decomposition step is exceeded due to lack of dissolved oxygen in the water quality. Therefore, the technology to supply dissolved oxygen to the waste water by using a fountain or air supply is mainly used.

However, in this case, the fermentation stage can be reduced, but there is a problem that green algae occurs due to the organic compound mixture, and especially a motor for driving a water fountain or blower installed in the water must be provided at all times to protect the motor from water. The device is essential, and when the diffuser is installed in the depth of water, its drainage pipe is not able to withstand the water pressure, and it is damaged very little. When the fountain is installed in the depth of water, it often breaks down. There was a problem that is difficult to use above the depth.

In addition, the continuous use of the water circulator without the filtration treatment is the same as the production plant of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and mass of suspended solids (SS) as shown in the analysis table below. In this case, the state of nitrogen (TN) and phosphorus (TP) is maximized, and the water quality of lakes and reservoirs becomes odorous vibrations and deaths that living things cannot live.

Therefore, the present invention is to solve the above-mentioned conventional problems, the object of the present invention is to simplify the configuration and the water purification can be performed well, and can be used irrespective of the depth of waste water purification of lakes and reservoirs improved usability It is to provide a processing device.

The purpose of the present invention as described above is to be installed in an active spawn culture tank in which active spawn (bacteria bacteria) are cultured after the wastewater is filled in a quantitative manner, and the waste water containing a large amount of spawn spawn is discharged from the active spawn culture tank. Active seed injector and precipitant injector operated according to the signal of the sensing sensor and a dilution tank for mixing the influent, active seed and precipitant, and aeration and sedimentation of the waste water discharged from the dilution tank. A plurality of aeration tanks and sedimentation tanks, a sludge treatment tank in which sludge is separated from the sedimentation tank, and a discharge tank are connected in series to form a wastewater purification treatment device for lakes and reservoirs.

The present invention is to cultivate a large amount of spawn in the soil spawn culture apparatus in the active spawn culture tank to be contained in the waste water, so as to decompose organic matter in the waste water to methane gas and carbon dioxide, and to supply oxygen to aerobic bacteria growth When the suspended solids are removed by the organic filtration device, the waste water is effectively purified, and since the configuration is simple, the water can be purified well and can be used regardless of the depth, thereby achieving the above object.

1 is a schematic diagram showing the wastewater purification treatment apparatus according to the present invention in order.

Figure 2 is a state illustrating the process of injecting the active spawn and precipitant by each injector into the wastewater flowing into the dilution tank in the culture tank of the present invention.

3 is a perspective view schematically illustrating the aeration tank structure of the present invention.

Figure 4 is a perspective view showing a state in which the aeration tank and the settling tank of the present invention is installed in sequence.

* Explanation of symbols for main parts of the drawings

10: active seed culture tank 11: active seed titration injector

12: Precipitator dose injector 13: Sensor

20: dilution tank 21: motor

22: stirring blade 24: air injection pipe

30: aeration tank 31: screen filter

33 pump 34 air diffusion tube

40: sedimentation tank 50: sludge treatment tank

60: discharge tank

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, the technical configuration and effect of the present invention being as follows.

1 is a schematic view showing the state to be purified according to the present invention in order, the active seed culture medium (10) and the active seed culture in which the active seed is cultured after the waste water is quantitatively filled, the seed spawn in the active seed culture medium (10) The active spawn dose injector 11 and the precipitant dose injector 12 are installed in a line for discharging the wastewater containing a large amount and operate according to a signal of a known sensor 13 which detects the discharge of the wastewater and converts it into a constant signal. , A dilution tank (20) for mixing the influent and active seed and precipitant, a plurality of aeration tank (30) and sedimentation tank (40) for aeration and precipitation of the wastewater discharged from the dilution tank (20), and the precipitation tank Sludge treatment tank (50) for separating sludge in (40), and discharge tank (60) for finally discharging the purified water after the sludge is separated in a series of speech and the waste water purification device of the lake and reservoir is configured Ugh To.

In the composition of the present invention, the active spawn culture tank 10 is a flow rate control valve (not shown in the drawing) is installed so that the waste water of the appropriate amount is always introduced, 15% of the active agent of the bio-ceramic bio-ceramic (Soil soil) 45% of the soil by the growth of soil bacteria to multiply by genetic method photosynthesis. The active spawn cultured in the active spawn culture tank 10 is a non-toxic, non-infectious special active bacterium, so that the biodegradability of 99.7 is saponified to decompose organic matters and even sodium salts.

Then, as described above, while the active spawn is cultured and the wastewater containing a large amount flows into the dilution tank 20 by a transfer means such as a pump, it is detected by the sensor 13 and according to the signal output from the sensor 13. The active spawn dose injector 11 and the precipitant dose injector 12 are operated.

The active spawn and the precipitant are fed into the dilution tank 20 together with the waste water by the operation of the active spawn dose injector 11 and the precipitant dose injector 12, wherein the dilution tank 20 is introduced into the dilution tank 20 as shown in FIG. 2. When the stirring blade 23 and the air injection pipe 24 rotated by the motor 21 are installed to be controlled by the control box 23, respectively, when the incoming wastewater and the active spawn and the precipitant are diluted, the air bubbles are mixed and burst. It is said to be preferable because the agitation power is increased and the culture of aerobic microorganisms is promoted.

In addition, the control box 32 after the screen filter 31 is installed at a predetermined height on the upper end of the front aeration tank 30 of the plurality of aeration tanks 30 installed below the dilution tank 20, as shown in FIG. When the wastewater flowing from the dilution tank 20 is pumped to the screen filter 31 by the pump 33 controlled by the impurities, impurities in the wastewater are filtered and then installed to fall into the aeration tank 30.

Only then, large particles of impurities contained in the waste water cannot be filtered out, and only a few particles pass therethrough, thereby increasing the purification efficiency of the waste water. The waste water is filtered by the screen filter 31 and then aerated tank 30 at a predetermined height. Aeration occurs by a large amount of air bubbles naturally occurring when falling to the), the aeration tank 30 may be provided with a plurality of air diffusion pipe 34 to supply air separately.

In addition, when installing a plurality of aeration tank 30 and the settling tank 40, as shown in FIG. 4, the waste water is passed through a plurality of aeration tank 30 in a zigzag, and then passed through the settling tank 40 in a zigzag in order to be discharged. This is preferred.

Here, the aeration tank 30 is aerobic dilution, decomposition, and stirring adjuvants and influent water is one physical property, that is, saponification is good biodegradation occurs as the deodorization is performed first, and the enzyme is generated second The fermentation is started in the third order, and the organic matter is decomposed and destroyed by methane gas and carbon dioxide, and the inorganic matter is aggregated.

In addition, it has the effect of improving the work efficiency of decomposing organic matter while passing through a plurality of aeration tanks 30 in turn, and in the case of installing the air diffusion pipe 34 in such aeration tank 30 to install heat dissipation of pipes of different diameters sequentially At this time, it is preferable to install the air diffusion tube 34 to enter about 30 cm from the surface of the water, so that the organic decomposition can be said to be optimal.

And when the waste water aerated in the aeration tank 30 is introduced into the sedimentation tank 40, the sludges that are sediment through the sediment recovery pipe connected to the float recovery pump while the waste water passes through the plurality of sedimentation tanks 40 to the sludge treatment tank 50. It is collected smoothly and only the purified water is discharged from the rearmost sedimentation tank 40. At this time, the discharged water has a very low content of nitrogen (TN) or phosphorus (TP), but has a biological oxygen demand (BOD) of 4.0 or less. It is discharged in a purified state with good water quality.

In the present invention as described above in the configuration of the wastewater purification apparatus, since the accompanying drawings are only one example showing an embodiment, the form of the configuration may vary as needed, as such The present invention is simple in configuration and can discharge water of well-purified water quality, and can be used regardless of the depth, and it is particularly effective in purifying water in stagnant lakes or reservoirs. It is a very useful invention with low maintenance costs because it can be quickly and simply reduced the manpower and costs required to purify the waste water.

Claims (2)

According to the signal of the sensor 13 for detecting the discharge of the waste water is installed in the active seed culture medium (10) for culturing the active seed, and the waste water containing a large amount of seed in the active seed culture medium (10) is discharged A dilution tank for mixing the active spawn and precipitant supplied by the operation of the active spawn dose injector 11 and the precipitant dose injector 12 and the active spawn dose injector 11 and the precipitant dose injector 12. 20, a plurality of aeration tank 30 and sedimentation tank 40 for aeration and sedimentation of the waste water discharged from the dilution tank 20, and a sludge treatment tank 50 for separating the sludge from the sedimentation tank 40 And, sludge is separated from the sludge treatment tank 50, the discharge tank (60) for the final discharge of the purified water discharged, characterized in that the waste water purification treatment device of the lake and reservoir. According to claim 1, The active spawn culture tank 10 is a wastewater of a proper amount is always introduced by the flow control valve, the dilution tank 20, the stirring blade 23 and the air powder rotated by the motor 21 The pipes 24 are installed to be controlled by the control box 23, respectively, so that a large amount of air bubbles burst during stirring, and the screen 33 is installed at a predetermined height at the top of the front aeration tank 30, and then the pump 33 The wastewater purification apparatus for lakes and reservoirs, wherein the wastewater flowing from the furnace dilution tank 20 is pumped to the screen filter 31 so that impurities are filtered and then dropped into the aeration tank 30.

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