JP2003340464A - Apparatus for purifying waste water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste water purifying apparatus in which sewage from a building or a multiple-family dwelling, domestic waste water, industrial waste water, or the like, is purified effectively at a low cost so that the purified water is used as regenerated water and the recovered sludge is used effectively at a low cost as manure for farming land and the generation of gaseous carbon dioxide is restrained. <P>SOLUTION: Waste water is purified by separating/removing large organic matter having ≥0.5 mm particle size in the waste water by using a screen having about 0.5-1.0 mm mesh, adding a flocculant such as ferric polysulfate and aluminum polychloride to the organic matterremoved waste water to flocculate tainting particles into flocks and removing the flocks by precipitating them, filtering them by using another screen having about several tens μm mesh or adding another flocculant, magnetic powder and a macromolecular flocculant to the flock-containing waste water to transform them into magnetic flocks and separating the magnetic flocks magnetically. At this step, the tainting sludge having ≥0.1 μm particle size is removed and the dissolved phosphorus is also removed by transforming it into iron phosphate chemically. A decomposing unit is combined with this waste water purifying apparatus for decomposing at ≤200°C the sludge recovered at this step, namely, when the filtration, the flocculation and the magnetic separation are performed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an area-dispersed wastewater purification device which serves as a watering source for a green space around a living space or a road cooling water source.

[0002]

2. Description of the Related Art As a current sewage purification system for urban living areas, there is a system that collects sewage including toilet drainage and kitchen drainage in living areas through sewer pipes and collectively purifies the sewage at a sewage treatment plant. Has been adopted. However, in this system, the sewage pipe becomes long, and the sewage whose organic matter size was 100 μm or more for the first time while moving through the sewage pipe was decomposed by microorganisms in the pipe and the organic matter size in the sewage was 0. Particles of 1 μm or less will reduce the efficiency of organic matter removal by coagulation-sedimentation treatment at the treatment plant, increase the treatment time of microorganisms and increase the size of the treatment plant, and require a large activated carbon adsorption tank for adsorbing fine particles. It is necessary to frequently replace the activated carbon with a new one, which increases equipment costs and operating costs.

[0003] In addition, in the sewage treatment plant, middle water is produced from the sewage, and this is again sent to a building that generates sewage by an underground water pipe, and is used in the building as a green space resource around the building and as flush water for flush toilets. In this case, too, underground water pipes need to be laid and maintained, and inexpensive middle water cannot be used.

Therefore, various proposals have been made in the past in order to improve the efficiency of such a purification system for urban living areas. As a locally dispersed purification system, sewage derived from clean water consumed in a building as disclosed in Japanese Patent Laid-Open No. 10-118043, and organic matter in the sewage due to microorganisms such as bacteria in a space below the building. Sludge is reduced to reduce sludge, and advanced purification treatment with activated carbon and ozone oxidation is performed to produce gray water and tap water from the sewage, and the tap water is reused as wash water for toilets, etc. There is a purification system for reuse.

In general, for wastewater containing a large amount of organic matter such as toilet wastewater, a purification method of decomposing organic matter in sewage with microorganisms such as bacteria to reduce sludge is adopted. In the current situation where social systems that reuse sewage sludge as compost are not common, it is effective to reduce sludge treatment costs by biodegrading organic matter to reduce sewage sludge as much as possible.

[0006]

However, in the above-mentioned conventional treatment method, it is premised that the bacteria convert carbon of the organic matter into carbon dioxide gas and release it into the atmosphere. From the viewpoint of preventing global warming, The problem of releasing large amounts of carbon dioxide into the environment has arisen. In addition, organic matter or insoluble nitrogen fixed in the organic matter is decomposed by microorganisms to be dissolved organic matter having a particle diameter of 0.1 μm or less, or soluble nitrogen such as ammonia or nitrate ions. Due to this, in order to treat humic acid and soluble nitrogen of soluble organic substances of 0.1 μm or less, advanced treatment that consumes a large amount of activated carbon, ozone, etc. is required, and ozone oxidation and activated carbon adsorption, which are expensive to operate, are required. There is a problem that humic acid is oxidized and adsorbed, and a large-scale treatment tank is required, and a soluble nitrogen decomposing step by anaerobic nitrifying bacteria that requires a long time is required, resulting in increase in equipment cost and operation cost.

[0007] In recent years, in the space plane of city buildings,
The heat island phenomenon that the temperature of the space rises in the summer when there is little green space, and it is effective to prevent the temperature of the space by creating a green space on the roof of a building, etc. The water source is generally rainwater, clean water, or clean water. However, it is difficult to secure rainwater every day or every few days, and there is a problem that the cost of watering increases when using clean water or medium water.

[0008] In recent years, a large amount of organic matter is contained in factory wastewater and hospital wastewater that process food products, and this wastewater is decomposed with microorganisms such as bacteria to decompose organic matter in sewage to reduce sludge. In addition, it is highly purified by activated carbon or ozone oxidation and discharged to rivers and oceans, which causes a problem of high treatment cost.

Further, although a method of composting organic sludge collected from a conventional purification device with microorganisms for a long time is provided, it is necessary for a long time for fertilization, so that it is necessary to use an external fertilizer factory or Generally, it is transported to a plant facility for fertilizer treatment, but the transportation cost of the recovered sludge is large and the treatment cost is high. In addition, during transportation to the fertilizer plant or plant facility, it is necessary to store the transportation until it reaches a fixed amount, and at this time, a bad odor is generated from the collected sludge, and a bad odor is generated in the living space, and also In order to prevent this, a device for treating the bad smell was required.

An object of the present invention is to allow a large number of people such as buildings and condominiums to live, to purify sewage, domestic wastewater, industrial wastewater, etc. at low cost and to reuse the sewage and domestic wastewater as recycled water. It is to provide a purifying device capable of Another object of the present invention is to provide a purification device that can convert recovered sludge into a good fertilizer at low cost and reuse the sludge as fertilizer for agricultural land.

[0011]

[Means for Solving the Problems] The above-mentioned objects are as follows: wastewater holding means for temporarily holding polluted water containing phosphorus, etc., wastewater collecting means for collecting wastewater in the wastewater holding means, and purification means for purifying the wastewater. And a sludge separating and discharging means for separating and discharging sludge generated in the purification treatment from wastewater, and a means for discharging purified water generated in the purification treatment, in which the purifying means is injected with a coagulant. This is accomplished by forming flocs containing pollutant particles, phosphorus, etc., and separating and discharging the flocs as sludge by a flocculating separation means for separating the flocs.

[0012] Further, the above-mentioned object is to form a floc containing pollutant particles and phosphorus by injecting a flocculant by injecting a flocculant by separating the floc by means of a non-medicated filtration means for filtering the contaminated water by a non-medicated treatment. It is achieved by the aggregating and separating means.

Further, the above-mentioned object is to form a magnetic floc containing pollutant particles, phosphorus, etc. by injecting a flocculant and a magnetic substance by means of a non-medicated filtration means for filtering the polluted water in a non-medicated treatment. This is achieved by magnetically separating and collecting the magnetic flocs as sludge by a flocculation separation means for separating the magnetic flocs.

Further, the above object can be achieved by providing a water supply means for plants as a means for discharging the purified water generated in the purification treatment.

Further, the above object can be achieved by providing a means for discharging purified water generated in the purification treatment with a water supply means for cooling or heating the land.

Further, the above object can be achieved by providing the waste water collecting means with a crushing discharging means for crushing the cooking residue finely and discharging it.

Further, the above object is to provide the sludge collecting means as follows.
This is achieved by having sludge drying means for drying the recovered sludge and heat-treating it at 200 ° C. or lower to reduce the sludge water content.

Further, the above-mentioned object is that the purification means is a non-chemical-injection filtering means for physically filtering the polluted water by a non-chemical-injection treatment, and a flocculating particle or phosphorus by injecting a flocculant which produces a magnetic substance. Is formed by forming a magnetic floc containing the above, and magnetically separating and collecting the magnetic floc as sludge.

Further, the above object can be achieved by providing a means for discharging purified water generated in the purification treatment with a water supply means used as flush water for a flush toilet.

Further, the above object can be achieved by providing the means for discharging the purified water generated in the purification treatment with a water supply means for cooling a part of the building of the industrial space or the living space. .

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is a wastewater treatment apparatus for domestic wastewater installed in a site of a building where many people live such as buildings and condominiums. Facilities are installed on the premises. In the initial treatment stage of sewage, domestic wastewater, factory wastewater, etc., water is first treated by abiotic treatment such as physical filtration or coagulation treatment, so that the opening is 0.5 mm to 1.
Using a net of about 0 mm, organic substances having a large particle size of 0.5 mm or more are separated by filtration. For example, it is used to remove waste paper from waste water, scraps of paper used in the toilet, residual vegetables crushed by a disposer discharged from the kitchen, and crushed into pieces.

Next, a coagulant such as ferric polysulfate or polyaluminium chloride is added to the waste water after filtration to flocculate the polluted particles in the waste water to separate them by sedimentation or use a net with an opening of several tens of μm. The wastewater is purified by filtering and separating, or by additionally attaching magnetic powder or polymer coagulant together with the coagulant to magnetically separate polluted particles into magnetic flocs for magnetic separation. Here, contaminants having a particle size of 0.1 μm or more and soluble phosphorus can be chemically changed to iron phosphate and removed. For example, in this purification process, SS (polluted suspended particles) and BO in the wastewater
Removes 90% or more of D (biological oxygen demand), COD (chemical oxygen demand), nitrogen and phosphorus.

The sludge collected by filtration, coagulation separation, and coagulation magnetic separation is combined with a device for decomposing the sludge at a temperature of 200 ° C. or less, and the sludge is transported in a living space without being transported. Inside the plant, in the plant, and in the vicinity thereof, dehydration is performed in this step, the organic matter is dried by thermal decomposition for several hours, and a substance causing an offensive odor is volatilized. The volatilized gas is deodorized by combustion, catalytic oxidation, etc., and the pyrolyzed and dried sludge can be effectively reused as an organic fertilizer material.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
Will be described. FIG. 1 is a schematic cross-sectional view of a building equipped with the sewage drainage purification system of the present invention. In FIG. 1, for example, the drainage from the toilet 2 of the building 1 or the sink 3 of the hot water supply room is collected by the drainage pipe 4 and flows into the purifying device 6 installed in the space of the basement 5 of the building, for example. . The treated water purified by the purifying device 6 is pumped and stored in the water tank 8 from the water pumping pipe 7 as water for cleaning the toilet in the building and as water supplied to the rooftop green space and the like.

A tube-type building wall heat exchanger 9 for cooling or heating the building wall may be provided in the middle of this pumped water. In the water tank 8, a part of the wash water for the toilet 2 is used through the water supply pipe 10, and the distribution pipe 15 is connected to the soil 14 in the green space tank 13 through the water supply pipe 11 and the flow rate adjusting valve 12.
The water is supplied at predetermined time intervals, and the plants 16 are grown. Part of the toilet 2 and the sink 3 of the hot water supply room receive tap water from the outside through a tap water pipe 17 and supply it into the building through a tap water supply pipe 18.

Further, the water tank 8 is connected to the ground 3 through the water supply pipes 10 and 19, the flow rate adjusting valve 20, and the distribution pipe 21.
Water is supplied to the soil 23 in the green tract tank 22 arranged at 0 at a predetermined time interval to grow the plants 24.

Further, in the water tank 8, water supply pipes 10, 1 are provided.
9 and 25, the flow rate adjusting valve 26, the distribution pipe 27,
Moisture is supplied at a predetermined time interval into the permeable paved road 29 on which the vehicle 28 or the like travels, water permeates into the paved road 29, and further evaporates in the summer, thereby cooling the paved road 29 in the summer. , It is designed to be heated in winter.

FIG. 2 is a block diagram for explaining the sewage drainage purification system of the present invention. In FIG. 2, sewage, which is water to be treated, is reserved from the drain pipe 4 in the water storage tank 31,
, Conduit 32, filter 33 for removing large dust
Through the pump 34 to be stored in the sewage storage tank 35. A medicine supply device 37 is provided through the conduit 38 to the stored sewage 36.
, Magnetic powders such as iron tetraoxide and pH adjusters, flocculants and polymeric reinforcing agents that provide aluminum ions and iron ions such as aqueous solutions of polyaluminum chloride, iron chloride and ferric sulfate can be added. . The sewage 36 to which such a chemical has been added is agitated by an agitating blade 41 which is rotationally driven by a motor 40 in an agitating tank 39, and a pretreatment including magnetic flocs having a size of several hundreds of micrometers to several millimeters. Water 4
2 is generated.

The pretreated water 42 produced in this way is indicated by an arrow A.
Water is passed through the conduit 43 to the filtration / separation device 44 as shown in FIG. In the filtration / separation device 44, the magnetic flocs in the pretreated water 42 are filtered by a rotation type net 45 that rotates clockwise in the plane of the drawing and has an opening of several tens of μm. The treated water purified by filtration and separation is sent to the deodorizing device 47 through the conduit 46, subjected to ozone oxidation, ultraviolet sterilization treatment, etc., and treated to be odorless and free of germs.

This water is pumped and stored in the water tank 8 shown in FIG. 1 as water for cleaning the toilet in the building from the water pumping pipe 7 and water supplied to the rooftop green space and the like. A part of the filtered water treated water is taken from the conduit 46, pressurized by a pump (not shown), and then guided to the sprinkling pipe 49 through the pipe 48. The magnetic flocs filtered on the outer surface of the rotary net 45 are washed from the inside of the net with shower water 50 from the water sprinkling pipe 49, washed off, and then attracted to the magnet side by the magnetic force of the stationary magnet 51. And is attached to the surface of the rotating cylindrical body 52 made of a non-magnetic material that rotates counterclockwise with respect to the paper surface, and is transported onto the surface of the pretreatment water 43 to remove excess water,
It is scraped off by a stationary scraping plate 53 and collected.
It falls into the sludge tank 54 and is stored.

The recovered sludge is stored in a sludge tank 56 through a pipe 55, and has a water content of about 85% so that water does not leak from the sludge during transportation and activates microorganisms that decompose organic matter during composting. With a moisture content of about 75%
As described above, the water content of the sludge before transportation and before the composting process is determined by the dewatering means 57 such as a centrifuge or a belt press.
Is further concentrated by. The recovered sludge is transported to a disposal site or an incinerator by a truck, or a composting tank 58 is provided in the latter stage, and sludge is transferred to the composting tank 58 through a flow path 59 to be composted. In addition, after composting, the compost may be crushed into a powder form, and the magnetic powder or the generated magnetic substance in the fertilizer may be recovered by another magnet magnetic separation device and reused.

FIG. 3 is a block diagram of a cleaning apparatus showing another embodiment. In FIG. 3, the recovered sludge is stored in a sludge tank 56 through a pipe 55, and a sludge liquefaction device 60 is used to store a temperature of about 200
The sludge is liquefied by heating and pressurizing at a temperature of ℃ or less to eliminate the coagulation function of the coagulant. After that, the pressure is returned to the atmospheric pressure by the magnetic separation device 61, where vapor and odor components are volatilized, and these are burned at a high temperature in the combustor 63 through the pipe 62 to deodorize the odor. The exhaust gas is released to the atmosphere. Magnetic separation device 6
In 1, remove magnetic substances such as magnetic powder in sludge, and then
It is dried and pulverized at a temperature of 180 ° C or less in a drying and heating device 64, and organic matter such as feces and cooking residues are crushed to a size of several millimeters when dried, but vinyl residues such as wrap in cooking residues are strong Since it is there, it remains in a large size without being crushed. After that, the heat-dried sludge fertilized with the container separation device 65 composed of a filtering device such as a wire mesh or a vibrating screen device and vinyl residue are separated, and the vinyl residue is incinerated or used as a plastic recycling material. Then
Reuse the heat-dried sludge as fertilizer.

According to this embodiment, the sewage and wastewater in the building are filtered and coagulated within a short time after the generation of sewage by a purifying device installed in the building or in the vicinity of the site. Coagulation Magnetic separation can remove most of pollutant particles and soluble phosphorus in sewage.Therefore, even if biological treatment step is not included, coagulation filtration separation or coagulation is completed within a few minutes from the coagulant input. It is possible to obtain water quality that fully meets the river discharge water quality standard only by the magnetic separation process.

That is, since a flocculant can be used to remove the pollutant particles within a short time after the generation of sewage before the organic substances are decomposed into fine particles having a size of 0.1 μm or less by bacteria or the like, after separation, Almost no fine particles are present, and treated water of very high quality can be obtained. Therefore,
By simply deodorizing and sterilizing the treated water, it can be reused as toilet wash water, water for cooling building walls, watering plants on the roof of the building or nearby ground, and water near the building. It can be used as water for cooling roads in summer and heating in winter.

Therefore, since the biological treatment process is not included, the treatment time is short, the purification device is small, and the device and the installation cost can be reduced in a narrow space, so that many people such as buildings and condominiums can use it. It is possible to provide a purification device that can live and purify sewage, domestic wastewater, factory wastewater, and the like at low cost and satisfactorily, and reuse the sewage and domestic wastewater as recycled water.

Further, since the components of the recovered sludge discharged from the living space can be ascertained, it can be confirmed that harmful heavy metals, which may possibly be mixed in the wastewater of the industrial product manufacturing process, are not mixed. That is, in general, sewage discharged from buildings, condominiums, hotels, etc. does not contain harmful substances in most cases, and there is no cost to remove these harmful substances. The sludge can be reused as fertilizer for agricultural land at low cost and with good fertilization.

FIG. 4 is also a block diagram of a purifying device for explaining another embodiment of the present invention. Fig. 4 shows the configuration of a purification device in buildings, condominiums, hotels, etc., where vegetables and food residues are mechanically finely cut with a disposer and organic substances and the like are mixed with domestic wastewater in the drainage of each living space. Is. In FIG. 4, the size of the organic matter cut by the disposer mixed in the waste water is several millimeters. The drainage water of each floor supplied by the drainage pipe 4 is introduced into the inside of the net 60 of the rotary drum first filtration device 61 having an opening of about 0.5 to 1 mm and physically filtered by the net 60. The filtered first treated water 62 is discharged to the outside of the net 60 and stored in the treatment tank 63. The vegetables and food residues cut by the disposer contain a large amount of fine organic matter having a vegetable fragment size of less than 0.5 mm. These organic substances are used in the first filtration device 6
No. 1 cannot be filtered and is mixed in the first treated water 62. The first treated water 62 that has passed through the filtration net in the first filtration device 61
Is guided to the drainage pipe 72 of the purifying device, and the fine organic matter of less than 0.5 mm is aggregated and separated by filtration using a coagulant. This is the same as the processing method described above.

A portion of the treated water that has passed through the rotary filtration membrane 45 is taken from the pipe 46 through the pipe 64, pressurized by the horn 65 and then introduced into the pipe 66, and the rotary filtration net 60 of the first filtration device 61 is rotated. Since the cleaning water 68 can be supplied to the nozzle 67 for use, it is not necessary to use expensive clean water as the cleaning water for the filtration net 60, and the operating cost can be reduced.

The washing water 68 and the filtered matter of the first filtering device 61 fall into the washing receiving trough 69, and then the water is cut off while moving the inclined trough 70 having the inclined slit-shaped opening. Residual sludge with a reduced rate is mechanically sent to the pipe 71 by a screw feeder (not shown) or the like. The cut water is fed from the slit part of the inclined gutter 70 to the rotary net 6
It falls inside 0. The sludge in the pipe 71 is carried into the sludge tank 56 through the pipe 71 and becomes a raw material for organic fertilizer. In addition, for cleaning the filter net 60 of the first filtration device 61,
Compressed air may be used.

FIG. 5 is also a block diagram of a cleaning apparatus having another embodiment of the present invention. In FIG. 5, the air in the air is compressed by the compressor 72, guided to the pipe 73, sprayed from the nozzle 74, the filtered residue is separated from the filter net 60 rotating by the air flow 75, and the residue receiving trough 69 is provided. Let it fall. In this embodiment, since the cleaning water in the residue can be prevented from being mixed, the amount of water in the sludge tank 56 can be reduced, and dehydration of a centrifugal separator, a belt press, etc., which is necessary for the operation of reducing the amount of water required for composting. It is effective in saving mechanical energy in the means 57 and thermal energy in the dry heater.

Further, as shown in FIG. 5, in the conventional domestic wastewater system in a living space such as an apartment, the drainage system of the toilet is used.
A, the kitchen, and the drainage system B in the bathroom were collected in a sewer collection tank installed in a separate pipe basement. For this reason, wastewater mixed with vegetables and cooking residues cut by the kitchen disposer flows into the pipe of the drainage system A in the building, but this pipe does not flow sufficiently because the kitchen drainage is small However, there was a problem that the pipes were easily accumulated and the pipes were easily clogged. However, drainage system
By integrating A and B, the drainage system B originally secures the amount of water that flushes human excrement, so the residue does not stay in the pipe, and the residue does not accumulate in the pipe and the pipe is not clogged. effective.

As described above, in the present embodiment, since the cooking residue can be removed and collected in the living space and the removed collected product can be composted, it is not necessary to incinerate it as living garbage outside the living space, This has the effect of reducing costs related to garbage collection and incineration. Moreover, since the fertilizer produced contains not only toilet sewage but also vegetable skin and fish bones, it contains more fertilizer components such as calcium than fertilizer composted from toilet sewage sludge. And can produce high quality fertilizer. These fertilizers can be used not only for domestic purposes but also for overseas greening projects.

According to the present invention, sewage, domestic wastewater, kitchen wastewater, factory wastewater, etc. mixed with sewage, domestic wastewater, cooking residues, etc., generated from buildings such as buildings, condominiums, hotels and factories where many people live, Cleans well at low cost,
It is possible to reuse sewage and domestic wastewater as reclaimed water for selective cleaning of toilets and watering for greening.

Further, there is an effect that the recovered sludge can be satisfactorily converted into fertilizer at a low cost and the sludge can be reused as a fertilizer for agricultural land. In addition, since sewage purification treatment is performed within the sewage generation area, it is possible to reduce the possibility of existing urban sewage treatment plants, and to reduce the amount of organic matter in the wastewater that is fertilized and the amount of carbon released to the atmosphere as carbon dioxide, It will help prevent global warming.

[0045]

EFFECTS OF THE INVENTION According to the present invention, a large number of people such as buildings and condominiums inhabit, sewage, domestic wastewater, factory wastewater and the like are purified at low cost and well, and sewage and domestic wastewater are reused as recycled water. In addition, it is possible to provide a purification device that can use the recovered sludge as low cost and good fertilizer in agricultural land.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a sewage drainage purification system in a building including an embodiment of the present invention.

FIG. 2 is a configuration diagram of a purifying apparatus including another embodiment of the present invention.

FIG. 3 is a configuration diagram of a purifying device including another embodiment of the present invention.

FIG. 4 is a configuration diagram of a purifying apparatus including another embodiment of the present invention.

FIG. 5 is a configuration diagram of a purifying apparatus including another embodiment of the present invention.

[Explanation of symbols]

1 ... Building, 2 ... Toilet, 3 ... Sink 4 ... Drain pipe, 5 ... Basement, 6 ... Purification device, 8 ... Water tank, 9 ... Building wall heat exchanger,
13 ... Green tract tank, 15 ... Distribution pipe, 16 ... Plant, 29 ... Paved road, 31 ... Water tank, 35 ... Sewage storage tank, 37 ... Drug supply device, 39 ... Stirring tank, 44 ... Filtration and separation device, 51 ... Magnet , 52 ... Rotating cylinder, 54 ... Sludge tank, 57 ... Dewatering means, 58 ... Composting tank, 61 ... Magnetic separation equipment, 64 ... Dry heating equipment.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Noriyo Nishijima             502 Kintatemachi, Tsuchiura City, Ibaraki Japan             Tate Seisakusho Mechanical Research Center (72) Inventor Katsuhiko Asano             3-1-1 Sachimachi, Hitachi City, Ibaraki Prefecture Stock Association             Hitachi, Ltd. Nuclear Business Division (72) Inventor Okawa             1-280, Higashikoigakubo, Kokubunji, Tokyo             Hitachi, Ltd. Research & Development Division F-term (reference) 2D039 DA01                 4D015 BA19 BA22 BB12 CA18 DA04                       DA16 DA37 DB01 EA06 EA32                       EA40 FA01 FA02 FA15 FA24                 4D059 AA05 AA07 BB03 BE08 BE15                       BE38 BK11 BK12 CA16 CB06                       CB27 EB06

Claims (10)

[Claims] 1. A wastewater holding means for temporarily holding polluted water containing phosphorus, a wastewater collecting means for collecting wastewater in the wastewater holding means, a purifying means for purifying the wastewater, and a purification treatment. In a wastewater purifying apparatus having a sludge separating and discharging means for separating and discharging sludge from wastewater, and a means for discharging purified water generated in the purification treatment, the purifying means contains a coagulant and contains pollutant particles, phosphorus, etc. A waste water purifying apparatus, characterized in that the flocs are formed, and the flocs are separated and discharged as sludge by a flocculating separation means for separating the flocs. 2. A non-chemical-injection filtering means for filtering the polluted water in a non-chemical-injection treatment, and an aggregating / separating means for injecting a flocculant to form flocs containing contaminant particles, phosphorus, etc., and separating the flocs. The wastewater purifying apparatus according to claim 1, wherein 3. A non-chemical-injection filtering means for filtering the polluted water by a non-chemical-injection treatment, and a flocculant and a magnetic substance are injected to form magnetic flocs containing pollutant particles, phosphorus, etc. The waste water purifying apparatus according to claim 2, wherein the floc separation means for separating separates and collects the magnetic flocs as sludge. 4. The waste water purification apparatus according to claim 1, wherein the means for discharging the purified water generated in the purification treatment has a means for supplying water to plants. 5. The waste water purification apparatus according to claim 1, wherein the means for discharging the purified water generated in the purification treatment includes a water supply means for cooling or heating the land. 6. The waste water purifying apparatus according to claim 1, wherein the waste water collecting means has a shredding and discharging means for finely shredding and discharging the cooking residue. 7. The waste water purification apparatus according to claim 1, wherein said sludge collecting means has sludge drying means for drying the collected sludge and heat-treating it at 200 ° C. or lower to reduce the sludge water content. 8. A non-chemical-injection filtering means for physically filtering the polluted water in a non-chemical-injection treatment, and a magnetic material containing pollutant particles or phosphorus by injecting a flocculant that produces a magnetic substance. The wastewater purifying apparatus according to claim 1, wherein flocs are formed and the magnetic flocs are magnetically separated and collected as sludge. 9. The waste water purification apparatus according to claim 1, wherein the means for discharging the purified water generated in the purification treatment includes a water supply means used as flush water for flush toilets. 10. The means for discharging purified water generated by the purification treatment includes a water supply means for cooling a part of the building in the living space or industrial production site. Wastewater purification equipment.