NL2029219A - Apparatus for advanced sewage treatment - Google Patents

Apparatus for advanced sewage treatment Download PDF

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Publication number
NL2029219A
NL2029219A NL2029219A NL2029219A NL2029219A NL 2029219 A NL2029219 A NL 2029219A NL 2029219 A NL2029219 A NL 2029219A NL 2029219 A NL2029219 A NL 2029219A NL 2029219 A NL2029219 A NL 2029219A
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Netherlands
Prior art keywords
flat plate
ozone
water
tank
flocculation tank
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NL2029219A
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Dutch (nl)
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NL2029219B1 (en
Inventor
Yan Shan
Yang Yong
Zhang Yaozong
Li Liping
Zhang Wang
Gao Qunli
Zhang Ning
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Univ North China Science & Technology
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Publication of NL2029219A publication Critical patent/NL2029219A/en
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Publication of NL2029219B1 publication Critical patent/NL2029219B1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46152—Electrodes characterised by the shape or form
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/308—Dyes; Colorants; Fluorescent agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical

Abstract

The present invention discloses an apparatus for advanced sewage treatment, comprising a suction pump, an electric flocculation device, and an ozone-ceramic flat sheet membrane filtration device installed in parallel with the electric flocculation device; the electric flocculation device comprises a flocculation tank, and a anode plate set, a cathode plate set and a sludge settling unit that are installed in the flocculation tank; the anode plate set and the cathode plate set are connected to a positive pole and a negative pole of a power supply respectively, forming a loop with the power supply; the sludge settling unit is installed at the bottom of the flocculation tank to collect formed precipitates; a water inlet is installed at a lower part of a tank wall of the flocculation tank away from the ozone-ceramic flat sheet membrane filtration device; a guide pipe is installed at an upper end of a tank wall of the flocculation tank close to the ozone-ceramic flat sheet membrane filtration device; the ozone-ceramic flat sheet membrane filtration device is used for injection of ozone into water, aeration for water treatment, and water filtration by a plate membrane; the suction pump is used for pumping out water filtered by the flat sheet membrane. The apparatus performs relatively well in removing suspended solids, total phosphorus (TP), ammonia nitrogen, turbidity, and chroma in the water, and ensuring that the standard for bacteria in the discharge is reached.

Description

APPARATUS FOR ADVANCED SEWAGE TREATMENT
FIELD OF TECHNOLOGY The present invention relates to the field of advanced sewage treatment, and in particular to an apparatus for advanced sewage treatment which can be used for removal of phosphorous, COD and turbidity, and bacteria so as to meet requirements for bacteria content in the discharge.
BACKGROUND With the development of society, people’s requirements for living standard and environment is gradually increasing. In recent years particularly, water environment has improved significantly as comprehensive measures are taken for its improvement. Regarding the process of municipal wastewater treatment, the standard for discharge by wastewater treatment plants has been upgraded from the original class IB to the current class IA as defined in “Discharge Standard of pollutants for Municipal Wastewater Treatment Plant” (GB8918-2002). With the comprehensive measures taken for the environment and increasingly stringent requirements of water environment, indicators have been upgraded from the original class IA to the a level equivalent to Category IV water body as defined in “Discharge Standard of pollutants in Water for Municipal Wastewater Treatment Plant’ (DB11/890-2012), and some local standards may be even more strict. As the large- and medium-sized municipal wastewater treatment plants have basically reached their capacity, the main problem they are facing is to upgrade for advanced treatment, meanwhile the small-sized wastewater treatment plants or stations still have some difficulties in ensuring a long-term effective discharge quality or improving indicators for water quality, and the primary discharge indicators which are not up to standards include the COD (chemical oxygen demand), ammonia nitrogen, chroma and total phosphorus (TP) among other relevant indicators.
SUMMARY In the view of the problems of the prior art, the present invention is proposed to provide
-2- an apparatus for advanced sewage treatment which can effectively ensure a stable discharge quality that meets the standards.
The following technical means are taken in the present invention: An apparatus for advanced sewage treatment comprising a suction pump, an electric flocculation device and an ozone-ceramic flat sheet membrane filtration device installed in parallel with the electric flocculation device, wherein the electric flocculation device comprises a flocculation tank, and an anode plate set, a cathode plate set and a sludge settling unit that are installed in the flocculation tank, wherein the anode plate set and the cathode plate set are connected to a positive pole and a negative pole of a power supply, respectively, forming 106 a loop with the power supply, such that metal cations generated by electrolysis polymerize with hydroxides (OH) in water to generate flocs with a strong adsorption capacity, the flocs forming precipitates together with impurities in the water through electrical neutralization and netting mechanisms; the sludge settling unit is installed at the bottom of the flocculation tank to collect the precipitates; a water inlet is installed at a lower part of a tank wall of the flocculation tank away from the ozone-ceramic flat sheet membrane filtration device to introduce sewage; a guide pipe is installed at an upper end of a tank wall of the flocculation tank close to the ozone-ceramic flat sheet membrane filtration device to introduce the flocculated and precipitated water into the ozone-ceramic flat sheet membrane filtration device; the ozone-ceramic flat sheet membrane filtration device is used for injection of ozone into water, aeration for water treatment and water filtration by a flat sheet membrane; the suction pump is connected to the flat sheet membrane via a pipe to pump out water filtered by the flat sheet membrane.
In the apparatus, the anode plate set comprises a flat plate electrode and a plurality of corrugated plate electrodes, the flat plate electrode and the plurality of corrugated plate electrodes being vertically and parallelly installed, the top of the flat plate electrode and the plurality of corrugated plate electrodes being connected by a plurality of insulated connecting rods and suspended on an upper part of the flocculation tank by the connecting rods, and the flat plate electrode being connected in an electrically insulated manner to an inner wall of the flocculation tank away from the ozone-ceramic flat sheet membrane filtration device; the cathode plate set comprises a flat plate electrode and a plurality of corrugated plate
-3- electrodes, the flat plate electrode and the plurality of corrugated plate electrodes being vertically and parallelly installed, the bottom of the flat plate electrode and the plurality of corrugated plate electrodes being connected by a plurality of insulated connecting rods and installed on a lower part of the flocculation tank by the connecting rods, and the flat plate electrode being connected in an electrically insulated manner to an inner wall of the flocculation tank on another side; the corrugated plate electrodes of the anode plate set and the cathode plate set are interpenetrated without touching each other, the corrugated plate electrodes and end surfaces of the flat plate electrodes on both sides are connected to the walls of the flocculation tank in 16 an electrically insulated manner, thereby dividing an upper space of the flocculation tank into a plurality of chambers connected at either the top or bottom; a water inlet is installed at a lower part of a tank wall of the flocculation tank away from the ozone-ceramic flat sheet membrane filtration device; a guide pipe is installed at an upper end of a tank wall of the flocculation tank close to the ozone-ceramic flat sheet membrane filtration device to introduce the flocculated water into the ozone-ceramic flat sheet membrane filtration device.
The ozone-ceramic flat sheet membrane filtration device comprises a filter tank, a flat sheet membrane, an aeration pipe and an aeration disk, wherein: the flat sheet membrane is installed within the filter tank and above the aeration disk; the aeration pipe extends into the bottom of the filter tank to supply ozone to the filter tank; and a plurality of said aeration disks are installed on the aeration pipe.
Preferably, the flat sheet membrane is a ceramic flat sheet membrane; the anode plate set is made of aluminum, iron or aluminum-iron alloy; the cathode plate set is made of T/RuO2. The corrugated plate electrodes of the positive plate set and the negative plate set may be in-phase corrugation plate electrodes or out-of-phase corrugation plate electrodes.
In one embodiment of the present invention, the sludge silo is a V-shaped groove; the projection distance between adjacent corrugated plate electrodes is 1-3 cm, and the corrugation angle of the corrugated plate electrodes is 90°; the distance between the flat plate electrode and its adjacent corrugated plate electrode is 2-3 cm.
The flocculation tank is preferably made of electrically insulating material for safety
-4- reasons.
BENEFICIAL EFFECTS
1. The apparatus for advanced sewage treatment in the present invention performs relatively well in removing suspended solids, total phosphorus (TP), ammonia nitrogen, turbidity, and chroma in the water, and ensuring that the standard for bacteria in the discharge is reached.
2. The anode plates and the cathode plates of the apparatus are in-phase corrugation plates or out-of-phase corrugation plates, which accelerate flocculation and settling during electrolysis because of changes in flow rate.
3. While part of aluminum and iron ions are flocculated and settled during the treatment by the electric flocculation device, a small amount of aluminum and iron ions enter the membrane cell, where ozone is injected and catalyzed by iron and aluminum ions to produce OH (hydroxyl radical), which further oxidizes the reducing substances in the water while effectively reducing the contamination of the flat sheet membrane so as to extend the filtration cycle, and effectively ensure the quality of the discharge.
BRIEF DESCRIPTIONS OF THE DRAWINGS FIG. 1 shows a front view in section of the apparatus for advanced sewage treatment in the present invention; FIG. 2 shows a top-view schematic diagram of the structure of the apparatus for advanced sewage treatment in the present invention; FIG. 3 shows a schematic diagram of the structure of the anode plate set in FIG. 1; FIG. 4 shows a schematic diagram of the structure of the cathode plate set in FIG. 1; FIG. 5 shows a top-view schematic diagram of the structure of the cathode plate set in FIG.4.
The numbers in the figures denote as follows:
11. flocculation tank 12. water inlet 13. partitions 14. sludge silo 15. sludge discharging pipe
21. anode plate set 22. cathode plate set 31. guide pipe 32. bubbles 33. flat sheet membrane
-5-
34. filtration tank 35. aeration pipe 36. aeration disk 37. pipe 38. suction pump
DESCRIPTION OF THE EMBODIMENTS The structure of the apparatus for advanced sewage treatment of the present invention will be described in detail with reference to the accompanying figures hereinafter.
As shown in FIG. 1 and FIG. 2, the apparatus for advanced sewage treatment of the present invention comprises a suction pump (38) and an electric flocculation device and an ozone-ceramic flat sheet membrane filtration device installed in parallel with the electric flocculation device. In the embodiment as demonstrated by the figures, the electric flocculation device was located on the left, and the ozone-ceramic flat sheet membrane filtration device was located on the right.
The electric flocculation device comprises a flocculation tank (11), and a anode plate set (21), a cathode plate set (22) and a sludge settling unit that are installed in the flocculation tank (11).
The flocculation tank (11) is made of a non-conductive material, which features corrosion resistance and high strength.
The sludge settling unit is set at the bottom of the flocculation tank (11), and seamlessly connected with the flocculation tank (11) on all sides, thereby dividing the flocculation tank (11) into an upper space and a bottom space which are not connected. The sludge settling unit comprises a plurality of sludge silos (14) and a partition (13), the plurality of sludge silos (14) being installed in parallel and connected sequentially; the partition (13) is set horizontally on the side away from the ozone-ceramic flat sheet membrane filtration device and connected to the adjacent sludge silos. The bottom of each sludge silo (14) is connected to a sludge discharging pipe (15), on which is a valve installed.
The structure of the anode plate set (21) and the cathode plate set (22) is shown as in figures 3-5. The anode plate set (21) comprises a flat plate electrode (21b) and a plurality of corrugated plate electrodes (21a), the flat plate electrode (21b} and the plurality of corrugated plate electrodes (21a) being vertically and parallelly installed, the top of the flat plate electrode (21b) and the plurality of corrugated plate electrodes (21a) being connected by a
-6- plurality of insulated connecting rods (21c) and suspended on an upper part of the flocculation tank (11) with the connecting rods (21c), and the flat plate electrode (21b) being connected in an electrically insulated manner to an inner wall of the flocculation tank (11) away from the ozone-ceramic flat sheet membrane filtration device. The cathode plate set (22) comprises a flat plate electrode (22b) and a plurality of corrugated plate electrodes (22a), the flat plate electrode (22b) and the plurality of corrugated plate electrodes (22a) being vertically and parallelly installed, the bottom of the flat plate electrode (22b) and the plurality of corrugated plate electrodes (22a) being connected by a plurality of insulated connecting rods (22c) and installed on a lower part of the flocculation tank (11) by the connecting rods (22c), 16 and the flat plate electrode (22b) being connected in an electrically insulated manner to an inner wall of the flocculation tank (11) on another side; The corrugated plate electrodes of the anode plate set (21) and the cathode plate set (22) are interpenetrated without touching each other, the corrugated plate electrodes and end surfaces of the flat plate electrodes on both sides are connected to the walls of the flocculation tank (11) in an electrically insulated manner, thereby dividing an upper space of the flocculation tank (11) into a plurality of chambers connected at either the top or bottom. The plate electrodes of the anode plate set are connected to a positive pole of a power supply, and the plate electrodes of the cathode plate set are connected to a negative pole of a power supply, forming a loop with the power supply.
A water inlet (12) is installed at a lower part of a wall of the flocculation tank (11) away from the ozone-ceramic flat sheet membrane filtration device; a guide pipe (31) is installed at an upper end of a tank wall of the flocculation tank (11) close to the ozone-ceramic flat sheet membrane filtration device to introduce the flocculated water into the ozone-ceramic flat sheet membrane filtration device.
The ozone-ceramic flat sheet membrane filtration device comprises a filtration tank (34), a flat sheet membrane (33), an aeration pipe (35) and an aeration disk (36). The flat sheet membrane (33) is installed within the filter tank (34); the aeration pipe (35) extends into the bottom of the filter tank (34) to supply ozone to the filter tank (34); and a plurality of said aeration disks (36) are installed on the aeration pipe (35). The flat sheet membrane (33) is installed above the aeration disks (36), the flat sheet membrane (33) being preferably a
-7- ceramic flat sheet membrane.
The suction pump (38) is connected to the flat sheet membrane (33) via the pipe (37) to pump out the water filtered by the flat sheet membrane (33).
The anode plate set (21) may be made of aluminum or iron, and preferably aluminum-iron alloy; the cathode plate set (22) may be made of Ti/RuOa, Ti, stainless steel, Pt or carbon plate, preferably being made of Ti/RuO:2 (titanium-ruthenium alloy); the corrugated plate electrodes of the anode plate set (21) and the cathode plate set (22) may be in-phase corrugated plate electrodes or out-of-phase corrugated plate electrodes (out-of-phase corrugation means that the crests of the waves are opposite to each other and the troughs of the waves are opposite to each other, forming an interlaced layout; in-phase corrugation means that the crests of the waves are opposite to the troughs of the waves, forming an interlaced layout).
In the embodiment as shown in FIG. 1, the sludge silo (14) is a V-shaped groove; the projection distance (d) between adjacent corrugated plate electrodes (21a and 22a) is 1-3 cm, and preferably 2 cm; the electrical resistance and hence power consumption will increase if the distance is too big; but if the distance is too small, the resistance for water to pass through will increase because of the narrow spacing. Additionally, both the distance between the flat plate electrode (21b) and its adjacent corrugated plate electrode (22a) and the distance between the flat plate electrode (22b) and its adjacent corrugated plate electrode (21a) are 2-3 cm. The corrugation angle of each in-phase corrugated plate electrode is 90°, and the length and height of the plate electrodes is mainly adjusted based on the volume of water to be treated to mainly meeting the requirements for the residence time, which is determined based on the concentration of impurities in the inlet water and the required degree of impurity removal.
The process and mechanism of sewage treatment by the above-mentioned apparatus is as follows: As shown in figures 1 and 2, the sewage to be treated enters the flocculation tank (11) from the bottom inlet (12), rises along the gap between the corrugated plate electrodes and the leftmost flat plate electrode up to the top and then turns back to fall along the gap between two corrugated plate electrodes, and continues to repeat the cycle of rise-fall-rise-fall,
-8- so that the sewage is propelled to flow along a serpentine channel. As shown in FIG. 2, the solid black dots in the diagram denote that the water flows upward, and the x dots denote that the water flows downward, the whole flow direction being that of a plug flow.
In an exemplary embodiment, the anode plate set (21) is aluminum plate electrodes.
Since the anode plate set is connected with a positive pole of a power supply, oxidation reactions will take place at the anode plate set under applied current to release AI**, which polymerizes with OH" in water, generating Al(OH)" flocs with a strong adsorption capability, which adheres to suspended and colloidal substances in water, thereby forming small flocs initially. Since each corrugation angle of the in-phase (or out-of-phase) corrugation plate channel is 90°, and the water moves up and down, the chance of collision of flocs in water is increased under the impetus of water flow, thus the flocs in water growing bigger gradually; meanwhile, since the direction of flow keeps changing, causing scouring on the surface of the anode and cathode plates, the polarization of concentration difference during electrolysis is minimized, thus AI3%* ions distribute evenly in water. As the flocs grow larger, the settling speed increases gradually, resulting in the settling of the flocs into the sludge silos (14) at the bottom of the tank. The settled flocs is discharged as sludge via the sludge discharge pipe (15).
The water treated by the flocculation tank (11) contains part of the APR" ions, which have a catalytic effect on ozone. The treated water flows into the ozone and flat sheet membrane treatment unit via the guide pipe (31). The ozone produced by the ozone generator (not shown in the figures) is supplied to the bottom of the ozone and flat sheet membrane treatment unit via the aeration pipe (35) and aeration is carried out by the titanium aeration discs (36) at the bottom. Catalyzed by AIP*, ozone can further remove COD, ammonia, nitrogen and color from the water, while further agitating the water in the filter tank (34), thus effectively reducing the thickness of the filter cake on the flat sheet membrane (33), while delaying the contamination of the flat sheet membrane (33). During normal operation, the pump (38) sucks the flat sheet membrane (33) through the pipe (37), so that water is discharged from the flat sheet membrane (33). The introduction of ozone can further oxidize the organic matter adsorbed on the flat sheet membrane, thus reducing the contamination of the flat sheet membrane by the pollutants.
Furthermore, additional pre-treatment equipment such as sedimentation, grit removal,
-9- biochemical or other appropriate equipment may be installed in front of the apparatus of the present invention as needed.
The water quality of inlet and outlet of the above apparatus is measured in an experiment under the conditions of current density being 9 mA/cm? and plate electrode spacing being 2 cm, and the results are as follows: i ae [A Oers 6 [01] 0 [4 As demonstrated by the above testing results, the apparatus of the present invention can effectively reduce total phosphorus (TP), ammonia nitrogen, COD and chroma in water.

Claims (10)

CONCLUSIESCONCLUSIONS 1. Een apparaat voor geavanceerde afvalwaterbehandeling, gekenmerkt door een zuigpomp (38), een elektrische flocculatie-inrichting en een ozon-keramische vlakke plaatmembraanfiltratie-inrichting dat parallel aan de elektrische flocculatie-inrichting is geïnstalleerd, waarbij de elektrische flocculatie-inrichting een flocculatietank (11), en een anodeplaatset (21), een kathodeplaatset (22) en een slibbezinkingseenheid omvat die in de flocculatietank (11) zijn geïnstalleerd, waarbij de anodeplaatset (21) en de kathodeplaatset (22) zijn respectievelijk verbonden met een positieve pool en een negatieve pool van een voeding, zodat metaalkationen gegenereerd door elektrolyse polymeriseren met hydroxiden (OH) in water om vlokken te genereren met een sterke adsorptievermogen, waarbij de vlokken samen met gesuspendeerde en colloïdale stoffen in het water precipitaten vormen door elektrische neutralisatie- en netmechanismen; de slibbezinkingseenheid is geïnstalleerd op de bodem van de flocculatietank (11) om de precipitaten op te vangen; een waterinlaat (12) is geinstalleerd bij een lager deel van een tankwand van de flocculatietank (11) weg van de ozon-keramische vlakke plaatmembraanfiltratie-inrichting om afvalwater in te voeren; een geleidingspijp (31) is geinstalleerd aan het bovenste uiteinde van een tankwand van de flocculatietank (11) dichtbij de ozon-keramische vlakke plaatmembraanfiltratie-inrichting om het uitgevlokte en neergeslagen water in de ozon-keramische vlakke plaatmembraanfiltratie-inrichting; de ozon-keramische vlakke plaatmembraanfiltratie-inrichting wordt gebruikt voor injectie van ozon in water, beluchting voor waterbehandeling en waterfiltratie door een vlakke plaatmembraan (33); de zuigpomp (38) is via een leiding (37) verbonden met het vlakke plaatmembraan (33) om water weg te pompen dat door het vlakke plaatmembraan (33) is gefilterd.1. An advanced wastewater treatment apparatus, characterized by a suction pump (38), an electric flocculation device and an ozone ceramic flat plate membrane filtration device installed in parallel with the electric flocculation device, the electric flocculation device being a flocculation tank ( 11), and an anode plate set (21), a cathode plate set (22) and a sludge settling unit installed in the flocculation tank (11), wherein the anode plate set (21) and the cathode plate set (22) are respectively connected with a positive terminal and a negative pole of a feed, so that metal cations generated by electrolysis polymerize with hydroxides (OH) in water to generate flocs with strong adsorption capacity, wherein the flocs together with suspended and colloidal substances in the water form precipitates through electrical neutralization and netting mechanisms; the sludge settling unit is installed at the bottom of the flocculation tank (11) to collect the precipitates; a water inlet (12) is installed at a lower part of a tank wall of the flocculation tank (11) away from the ozone-ceramic flat plate membrane filtration device to introduce waste water; a guide pipe (31) is installed at the upper end of a tank wall of the flocculation tank (11) close to the ozone-ceramic flat plate membrane filtration device to pass the flocculated and precipitated water into the ozone-ceramic flat plate membrane filtration device; the ozone ceramic flat plate membrane filtration device is used for injection of ozone into water, aeration for water treatment and water filtration through a flat plate membrane (33); the suction pump (38) is connected via a conduit (37) to the flat plate membrane (33) to pump out water filtered through the flat plate membrane (33). 2. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de anodeplaatset (21) een vlakke plaatelektrode (21b) en een aantal golfplaatelektroden (21a), de vlakke plaatelektrode en het aantal van golfplaatelektroden die verticaal en parallel zijn geïnstalleerd, waarbij de bovenkant van de vlakke plaatelektrode (21b) en het aantal golfplaatelektroden (21a) aan de bovenkant zijn verbonden door een aantal geïsoleerde verbindingsstangen (21c} en opgehangen aan een bovenste een deel van de flocculatietank (11) door de verbindingsstangen (21c), en de vlakke plaatelektrode (21b) die op een elektrisch geïsoleerde manier is verbonden met een binnenwand van de flocculatietank (11) weg van de ozon-keramische vlakke plaatmembraanfiltratie-inrichting; de kathodeplaatset (22) omvat een vlakke plaatelektrode (22b) en een aantal golfplaatelektroden (22a), waarbij de vlakke plaatelektrode (22b) en het aantal golfplaatelektroden (22a) verticaal en parallel zijn geïnstalleerd, de onderkant van de vlakke plaatelektrode (22b) en het aantal golfplaatelektroden (22a) zijn verbonden door een aantal geïsoleerde verbindingsstangen (22c) en geïnstalleerd op een onderste deel van de flocculatietank (11) door de verbindingsstangen (22c¢), en waarbij de vlakke plaatelektrode (22b) op een elektrisch geïsoleerde manier is verbonden met een binnenwand van de flocculatietank (11) aan een andere zijde; de golfplaatelektroden van de anodeplaatset (21) en de kathodeplaatset (22) zijn doorgedrongen zonder elkaar aan te raken, de golfplaatelektroden en eindvlakken van de vlakke plaatelektroden aan beide zijden zijn verbonden met de wanden van de flocculatietank (11) op een elektrisch geïsoleerde manier, waardoor een bovenste ruimte van de flocculatietank (11) wordt verdeeld in een aantal kamers die ofwel aan de bovenzijde ofwel aan de onderzijde met elkaar in verbinding staan; een waterinlaat (12) is geïnstalleerd bij een lager deel van een tankwand van de flocculatietank (11) weg van de ozon-keramische vlakke plaatmembraanfiltratie-inrichting; een geleidingspijp (31) is geïnstalleerd aan het bovenste uiteinde van een tankwand van de flocculatietank (11) dichtbij de ozon-keramische vlakke plaatmembraanfiltratie-inrichting om het uitgevlokte en neergeslagen water in de ozon-keramische vlakke plaatmembraanfiltratie-inrichting.The advanced wastewater treatment apparatus according to claim 1, characterized in that : the anode plate set (21) has a flat plate electrode (21b) and a plurality of corrugated plate electrodes (21a), the flat plate electrode and the plurality of corrugated plate electrodes installed vertically and in parallel wherein the top of the flat plate electrode (21b) and the plurality of corrugated plate electrodes (21a) on the top are connected by a plurality of insulated connecting rods (21c} and suspended from an upper part of the flocculation tank (11) by the connecting rods (21c) , and the flat plate electrode (21b) connected in an electrically insulated manner to an inner wall of the flocculation tank (11) away from the ozone-ceramic flat plate membrane filtration device, the cathode plate set (22) comprises a flat plate electrode (22b) and a number of wave plate electrodes (22a), where the flat plate electrode (22b) and the number of wave plate electrodes (22a) are vertical and parallel g installed, the bottom of the flat plate electrode (22b) and the plurality of corrugated plate electrodes (22a) are connected by a plurality of insulated connecting rods (22c) and installed on a lower part of the flocculation tank (11) by the connecting rods (22c¢), and wherein the flat plate electrode (22b) is connected in an electrically insulated manner to an inner wall of the flocculation tank (11) on another side; the wave plate electrodes of the anode plate set (21) and the cathode plate set (22) are penetrated without touching each other, the wave plate electrodes and end faces of the flat plate electrodes on both sides are connected to the walls of the flocculation tank (11) in an electrically insulated manner, thereby dividing an upper space of the flocculation tank (11) into a plurality of chambers communicating with each other either at the top or at the bottom; a water inlet (12) is installed at a lower part of a tank wall of the flocculation tank (11) away from the ozone-ceramic flat plate membrane filtration device; a guide pipe (31) is installed at the upper end of a tank wall of the flocculation tank (11) close to the ozone ceramic flat plate membrane filtration device to pass the flocculated and precipitated water into the ozone ceramic flat plate membrane filtration device. 3. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de ozon-keramische membraanfiltratie-inrichting een filtertank (34), een vlakke plaatmembraan (33), een beluchtingspijp (35) en een beluchtingsschijf (36), waarbij: het vlakke plaatmembraan (33) is geïnstalleerd binnen de filtertank (34) en boven de beluchtingsschijf (36); de beluchtingspijp (35) strekt zich uit tot in de bodem van de filtertank (34) om ozon aan de filtertank (34) toe te voeren; en een veelvoud van genoemde beluchtingsschijven (36) is geïnstalleerd op de beluchtingspijp (35).The advanced wastewater treatment apparatus according to claim 1, characterized in that : the ozone ceramic membrane filtration device comprises a filter tank (34), a flat plate membrane (33), an aeration pipe (35) and an aeration disk (36), wherein : the flat plate membrane (33) is installed inside the filter tank (34) and above the aeration disk (36); the vent pipe (35) extends into the bottom of the filter tank (34) to supply ozone to the filter tank (34); and a plurality of said aeration disks (36) are installed on the aeration pipe (35). 4. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat het vlakke plaatmembraan een keramisch vlakke plaatmembraan is.The advanced wastewater treatment apparatus according to claim 1, characterized in that the flat plate membrane is a ceramic flat plate membrane. 5. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de anodeplaatset (21) is gemaakt van aluminium, ijzer of aluminium-ijzer legering, en de kathodeplaatset (22) is gemaakt van Ti/RuO..The advanced wastewater treatment apparatus according to claim 1, characterized in that : the anode plate set (21) is made of aluminum, iron or aluminum-iron alloy, and the cathode plate set (22) is made of Ti/RuO. 6. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de golfplaatelektroden van de anodeplaatset (21) en de kathodeplaatset (22) in-fase golfplaatelektroden of uit-fase golfplaatelektroden zijn.The advanced wastewater treatment apparatus according to claim 1, characterized in that : the corrugated plate electrodes of the anode plate set (21) and the cathode plate set (22) are in-phase corrugated plate electrodes or out-of-phase corrugated plate electrodes. 7. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de slibsilo (14) een V-vormige groef is.The advanced wastewater treatment apparatus according to claim 1, characterized in that : the sludge silo (14) is a V-shaped groove. 8. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de projectieafstand tussen aangrenzende golfplaatelektroden (21a en 22a) 1-3 cm is, en de golfhoek van de golfplaatelektroden 90° is.The advanced wastewater treatment apparatus according to claim 1, characterized in that : the projection distance between adjacent corrugated plate electrodes (21a and 22a) is 1-3 cm, and the wave angle of the corrugated plate electrodes is 90°. 9. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de afstand tussen de vlakke plaatelektrode (21b of 22b) en de aangrenzende golfplaatelektrode (22a of 21a) 2-3 cm bedraagt.The advanced wastewater treatment apparatus according to claim 1, characterized in that : the distance between the flat plate electrode (21b or 22b) and the adjacent corrugated plate electrode (22a or 21a) is 2-3 cm. 10. Het apparaat voor geavanceerde afvalwaterbehandeling volgens conclusie 1, met het kenmerk, dat: de flocculatietank (11) is gemaakt van elektrisch isolerend materiaal.The advanced wastewater treatment apparatus according to claim 1, characterized in that : the flocculation tank (11) is made of electrically insulating material.
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