CN215799061U

CN215799061U - Combined water treatment reactor

Info

Publication number: CN215799061U
Application number: CN202122281465.7U
Authority: CN
Inventors: 董恩氚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-11
Anticipated expiration: 2031-09-18

Abstract

The utility model provides a combined water treatment reactor, which comprises a sewage interception sedimentation tank, a flocculation reaction tank, a sedimentation tank, a biological purification tank, a filter tank, a disinfection tank and a clean water tank. The utility model organically combines various physical, chemical and biological water treatment processes such as gravity settling, flocculation precipitation, biodegradation, plant absorption, medium adsorption, physical filtration, oxidative decomposition and the like, and purifies the water by utilizing multiple synergistic effects of the physical, chemical and biological processes; meanwhile, the sewage flows automatically by the self gravity without additionally adding a lifting pump; the water flow channel mode through multistage dislocation provides longer hydraulic retention time for sewage purification treatment to fully purify water quality, have the energy consumption low, purifying effect is good, advantages such as operation simple and convenient have good market perspective.

Description

Combined water treatment reactor

Technical Field

The utility model relates to the field of water pollution treatment, in particular to a combined water treatment reactor.

Background

With the development of socio-economic and improvement of national living standard, industrial and agricultural production wastewater and domestic sewage are discharged in large quantity, various pollutants enter river water bodies in a point source or surface source mode, and a large amount of pollutants such as nitrogen, phosphorus, organic matters and the like are enriched, so that a plurality of shallow lakes and slow flow river water bodies in China present serious eutrophication pollution states, the water quality is deteriorated, and even black and odorous problems occur.

Based on the method, the local construction of distributed sewage treatment stations is adopted in some cities at home and abroad for purification treatment, and the effluent reaching the standard is discharged into the receiving water body. The existing distributed sewage treatment facilities have large disturbance to the current situation of a water body, large land occupation, high power energy consumption, large investment and operation cost, high professional requirements on managers and low operation efficiency of distributed sewage treatment. Therefore, there is a need for a combined water treatment reactor for river and lake sewage treatment with low development impact and low energy consumption.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a combined water treatment reactor with low impact and low energy consumption.

The technical scheme of the utility model is realized as follows: the utility model provides a combined water treatment reactor, which comprises a sewage interception settling pond, a flocculation reaction pond, a sedimentation pond, a biological purification pond, a filter pond, a disinfection pond and a clean water pond, wherein the sewage interception settling pond, the flocculation reaction pond, the sedimentation pond, the biological purification pond, the filter pond, the disinfection pond and the clean water pond are sequentially communicated; sewage is treated through sewage interception and sludge discharge, flocculation reaction, alum blossom precipitation, biological purification, medium filtration and disinfection until clear water is discharged.

On the basis of above technical scheme, it is preferred, cut dirty sedimentation tank top and install the inlet tube, first mud discharging mouth has been seted up to the bottom, cut and install first connecting pipe on dirty sedimentation tank and the adjacent lateral wall of flocculation reaction tank, the intercommunication cuts dirty sedimentation tank and flocculation reaction tank, the mounting height of first connecting pipe is less than the inlet tube.

A partition plate is arranged in the sewage interception settling tank and is connected with a top plate and a bottom plate of the sewage interception settling tank, and the sewage interception settling tank is divided into a first settling tank and a second settling tank; the partition plate is provided with a second connecting pipe which is communicated with the first sedimentation tank and the second sedimentation tank; the installation height of the second connecting pipe is higher than that of the first connecting pipe; the first sludge discharge port has two, is located the baffle both sides respectively.

On the basis of the technical scheme, preferably, a first feeding pipe is installed at the top of the flocculation reaction tank and used for feeding a flocculating agent; a first stirrer is arranged in the flocculation reaction tank; a third connecting pipe is arranged on the side wall of the flocculation reaction tank adjacent to the sedimentation tank and is communicated with the flocculation reaction tank and the sedimentation tank, and the installation height of the third connecting pipe is lower than that of the first connecting pipe; and a second sludge discharge port is formed at the bottom of the flocculation reaction tank.

On the basis of the technical scheme, preferably, the sedimentation tank is provided with a fourth connecting pipe, a waterproof pore plate, an inclined pipe, a porous filter plate and a sedimentation mud tank from top to bottom; the fourth connecting pipe is provided with a plurality of water permeable holes, is arranged on the adjacent side walls of the sedimentation tank and the biological purification tank and is communicated with the sedimentation tank and the biological purification tank; the waterproof pore plate and the porous filter plate are horizontally arranged on the inner side wall of the sedimentation tank; the inclined pipes are filled between the waterproof pore plate and the porous filter plate, and form an angle of 60 degrees with the waterproof pore plate; the settling mud tank is arranged at the bottom of the settling pond; a third sludge discharge port leading to the outside is formed at the bottom of the sludge settling tank; the third connecting pipe is positioned between the sediment sludge tank and the porous filter plate.

On the basis of the technical scheme, preferably, the interior of the biological purification tank is divided into a plant cultivation layer, an activated carbon adsorption layer and a biological contact oxidation layer from top to bottom; an aerator pipe is arranged at the bottom of the biological contact oxidation layer and is connected with an external aerator; the fourth connecting pipe is positioned in the part of the biological purification tank and is embedded into the plant cultivation layer; and a fifth connecting pipe is arranged on the side wall of the biological purification tank adjacent to the filtering tank, is positioned at the lower part of the aeration pipe and is communicated with the biological purification tank and the filtering tank.

On the basis of the technical scheme, preferably, the plant cultivation layer comprises a plant and a ceramsite layer, and the plant is planted on the ceramsite layer; the active carbon adsorption layer is an active carbon filling layer; the biological contact oxidation layer is a carbon fiber artificial aquatic weed filling layer.

On the basis of the technical scheme, preferably, the filter tank is filled with a first filter material, a second filter material and a third filter material from top to bottom; a sealing plate is arranged at the upper part of the first filter material; a sixth connecting pipe is arranged on the inner wall of the filtering tank adjacent to the disinfecting tank and is communicated with the filtering tank and the disinfecting tank; the part of the sixth connecting pipe, which is positioned in the filter tank, is embedded in the first filter material, a plurality of permeable holes are formed in the pipe wall, and the sixth connecting pipe is higher than the fifth connecting pipe.

On the basis of the technical scheme, preferably, the first filter material is anthracite, the second filter material is manganese sand, and the third filter material is quartz sand.

On the basis of the technical scheme, preferably, the top of the disinfection tank is provided with a second feeding pipe for feeding disinfectants; a second stirrer is arranged in the disinfection tank; a seventh connecting pipe is arranged on the inner wall of the disinfection tank adjacent to the clean water tank and is communicated with the disinfection tank and the clean water tank, and the position of the seventh connecting pipe is lower than that of the sixth connecting pipe; and a drain pipe is arranged at the joint of the clean water tank and the outside, and the position of the drain pipe is lower than that of the seventh connecting pipe.

Compared with the prior art, the combined water treatment reactor has the following beneficial effects:

(1) the utility model realizes the ecological and functional reconstruction and upgrade of the river and lake discharge inlet, purifies pollutants in the water discharge outlet, practically reduces the pollution load of the river and lake, and can solve the problem of water pollution of the river and lake more efficiently and economically from the source.

(2) The utility model organically combines various physical, chemical and biological water treatment processes such as gravity settling, flocculation precipitation, biodegradation, plant absorption, medium adsorption, physical filtration, oxidative decomposition and the like, purifies water by utilizing multiple synergistic effects of physics, chemistry and biology, realizes interception, adsorption, degradation and conversion of solid suspended matters, colloid particles, N, P nutritive salt and soluble organic pollutants in sewage at a river and lake discharge port, removes the pollutants, ensures that the water quality of the treated water at the discharge port can reach the first-level A standard of GB18918-2002 pollutant discharge Standard of urban Sewage treatment plant, and the removal rate of ammonia nitrogen in the sewage at the discharge port can reach more than 85 percent, the removal rate of TN can reach more than 75 percent, the removal rate of TP is more than 80 percent, and the removal rate of COD value is more than 90 percent, thus solving the problem of water pollution of rivers and lakes from the source.

(3) The utility model fully utilizes the self nutrition ecological niche of the sewage to purify the water quality through the processes of biodegradation and plant absorption; meanwhile, the sewage self-gravity flow is relied on, a lifting pump is not required to be additionally arranged, the power lifting process is reduced, the power of the oxygenation pump in the biological purification tank is provided by the solar power generation panel, the energy consumption is greatly saved, and the biological pollution treatment device is a novel biological pollution treatment technology with low influence development and low energy consumption.

(4) The utility model provides longer hydraulic retention time for sewage purification treatment by a multi-stage staggered water flow channel mode, so as to fully perform chemical flocculation sedimentation and biological contact purification processes, more thoroughly remove pollutants at a discharge port and improve the water quality index of treated effluent.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a modular water treatment reactor of the present invention.

In the figure, 1-sewage interception sedimentation tank, 2-flocculation reaction tank, 3-sedimentation tank, 4-biological purification tank, 5-filtration tank, 6-disinfection tank, 7-clean water tank, 11-water inlet pipe, 12-first sludge discharge port, 13-first connecting pipe, 14-clapboard, 15-second connecting pipe, 16-first sedimentation tank, 17-second sedimentation tank, 21-first feeding pipe, 22-first stirrer, 23-third connecting pipe, 24-second sludge discharge port, 31-fourth connecting pipe, 32-water-proof pore plate, 33-inclined pipe, 34-porous filter plate, 35-sedimentation sludge groove, 36-third sludge discharge port, 41-plant cultivation layer, 42-active carbon adsorption layer, 43-biological contact oxidation layer, 44-an aerator pipe, 45-a fifth connecting pipe, 46-a fourth sludge discharge port, 411-plants, 412-a ceramsite layer, 51-a first filter material, 52-a second filter material, 53-a third filter material, 54-a sealing plate, 55-a sixth connecting pipe, 61-a second feeding pipe, 62-a second stirrer, 63-a seventh connecting pipe and 71-a water discharge pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, the combined water treatment reactor of the present invention comprises a sewage interception settling tank 1, a flocculation reaction tank 2, a sedimentation tank 3, a biological purification tank 4, a filtration tank 5, a disinfection tank 6 and a clean water tank 7. The sewage interception sedimentation tank, the flocculation reaction tank, the sedimentation tank, the biological purification tank, the filtering tank, the disinfection tank and the clean water tank are arranged in parallel and are communicated through a connecting pipe; two adjacent tank bodies are separated by a water retaining wall, the bottoms of the two adjacent tank bodies are positioned on the same horizontal line, and the two adjacent tank bodies can be buried under the ground surface and can also be placed on the ground surface. Each shell can adopt a steel structure, a concrete structure or PE and PP materials; sewage is treated through sewage interception and sludge discharge, flocculation reaction, alum blossom precipitation, biological purification, medium filtration and disinfection until clear water is discharged.

In the above embodiment, the sewage interception settling pond is a cuboid, the size of the sewage interception settling pond is matched with the amount of treated sewage, and the hydraulic retention time is not less than 30 min. The sewage interception sedimentation tank 1 is connected with an external sewage receiving pipe, and achieves the effect of sludge removal through natural sedimentation of sewage. The internal structure is as follows: cut 1 top of dirty settling basin and install inlet tube 11, first mud discharging port 12 has been seted up to the bottom, cut and install first connecting pipe 13 on dirty settling basin 1 and the adjacent lateral wall of flocculation reaction pond 2, the intercommunication cuts dirty settling basin 1 and flocculation reaction pond 2, the mounting height of first connecting pipe 13 is less than inlet tube 11. Sewage passes through inlet tube 11 and gets into to cut dirty settling basin 1, and impurity such as aquatic mud subsides naturally under the effect of gravity, and impurity and mud in aquatic are discharged from first mud discharge mouth, and upper water then flows into flocculation reaction tank through first connecting pipe.

In the above embodiment, in order to improve the sludge settling efficiency, the sewage intercepting settling tank 1 is divided into two parts, specifically: a partition plate 14 is arranged in the sewage interception settling pond 1, the partition plate 14 is connected with a top plate and a bottom plate of the sewage interception settling pond 1, and the sewage interception settling pond 1 is divided into a first settling pond 16 and a second settling pond 17; a second connecting pipe 15 is arranged on the partition plate 14 and is communicated with a first sedimentation tank 16 and a first sedimentation tank 17; the second connection pipe 15 is installed at a height higher than that of the first connection pipe 13; the first sludge discharge ports 12 are two and are respectively positioned on two sides of the partition plate 14.

After entering the sewage interception sedimentation tank 1 through the water inlet pipe 11, sewage firstly flows into a first sedimentation tank 16, sedimentation is carried out in the first sedimentation tank, and sludge is discharged through a first sludge discharge port; the sewage on the upper layer flows into the second sedimentation tank 17 through the second connecting pipe for secondary sedimentation, the settled sludge is discharged through the two first sludge discharge ports, and the sewage after the secondary sedimentation flows into the flocculation reaction tank through the first connecting pipe.

In the above embodiment, the flocculation reaction tank 2 is a cuboid, the top of the flocculation reaction tank 2 is provided with the first feeding pipe 21, and the first feeding pipe 21 is made of PVC-U material and is used for feeding the flocculant; a first stirrer 22 is arranged in the flocculation reaction tank 2; a third connecting pipe 23 is arranged on the side wall of the flocculation reaction tank 2 adjacent to the sedimentation tank 3 and is communicated with the flocculation reaction tank 2 and the sedimentation tank 3, and the installation height of the third connecting pipe 23 is lower than that of the first connecting pipe 13; and a second sludge discharge port 24 is formed at the bottom of the flocculation reaction tank 2.

The preferable first stirrers are two and are arranged in the flocculation reaction tank side by side, and each first stirrer consists of a stirring shaft and four groups of symmetrical stirring blades.

After sewage enters the flocculation reaction tank, the composite flocculant is thrown into the reaction tank through the first feeding pipe, the first stirrer is started, under the stirring condition, the flocculant is fully mixed and contacted with fine colloidal particles in the sewage to form large alum floc settlement, sludge is discharged from the second sludge discharge port, and the sewage and alum floc mixture flows into the sedimentation tank from the third connecting pipe.

In the above embodiment, the sedimentation tank 3 is provided with a fourth connecting pipe 31, a water-proof pore plate 32, an inclined pipe 33, a porous filter plate 34 and a sedimentation mud tank 35 from top to bottom; the fourth connecting pipe 31 is provided with a plurality of water permeable holes, is arranged on the adjacent side walls of the sedimentation tank 3 and the biological purification tank 4, and is communicated with the sedimentation tank 3 and the biological purification tank 4; the waterproof pore plate 32 and the porous filter plate 34 are horizontally arranged inside the sedimentation tank 3; the inclined pipes 33 are filled between the water-resisting pore plate 32 and the porous filter plate 34, and the inclined pipes 33 and the water-resisting pore plate 32 form an angle of 60 degrees; the settling mud tank 35 is arranged at the bottom of the settling pond 3; a third sludge discharge port 36 communicated to the outside is formed at the bottom of the sludge settling tank 35; the third connecting pipe 23 is located between the settling sludge tank 35 and the porous filtering sheet 34.

Preferably, the inclined tube is a hexagonal honeycomb inclined tube made of PVC. The inclined pipe 33 and the water-resisting hole plate 32 form an angle of 60 degrees, so that alum blossom and sewage can be separated conveniently.

The preferable sediment sludge groove is the back taper, and sediment sludge groove has two. After the sewage and the alum blossom flow into the sedimentation tank, filtering a part of the alum blossom through a porous filter plate, enabling the other part of the alum blossom to continuously enter an inclined pipe along with the sewage, separating the remaining alum blossom from the sewage in the process of flowing from bottom to top in the inclined pipe, enabling the alum blossom to flow down along the inclined pipe, enabling the sewage to continuously flow upwards along the inclined pipe, and enabling the sewage to enter a biological purification tank 4 through a fourth connecting pipe 31; the alum floc separated from the sewage is collected to the lowest part of the sludge settling tank and is discharged from a third sludge discharge port.

In the above embodiment, the biological purification tank 4 is a cuboid, the size of which matches with the amount of sewage to be treated, and the hydraulic retention time is not less than 60 min. The internal structure is as follows: the interior of the biological purification tank 4 is divided into a plant cultivation layer 41, an activated carbon adsorption layer 42 and a biological contact oxidation layer 43 from top to bottom. The adjacent two layers are separated by a porous PE clapboard paved with stainless steel mesh or non-woven fabrics. An aerator pipe 44 is arranged at the bottom of the biological contact oxidation layer 43, and the aerator pipe 44 is connected with an external aerator; the fourth connecting pipe 31 is positioned in the biological purification tank 4, and is partially embedded in the plant cultivation layer 41 to provide water for plants; a fifth connecting pipe 45 is arranged on the side wall of the biological purification tank 4 adjacent to the filtering tank 5, and the fifth connecting pipe 45 is positioned at the lower part of the aeration pipe 44 and is communicated with the biological purification tank 4 and the filtering tank 5; the bottom of the biological purification tank 4 is provided with a fourth sludge discharge port 46.

The water planting plant cultivation layer is used for planting various water planting plants or wet plants which are domesticated and cultivated, 8-12mm hard porous ceramsite is used as a solid cultivation substrate, plant root systems naturally extend in the solid cultivation substrate, and a inhabitation carrier is provided for microbial films. The growth of the adjacent planted water culture plants is not mutually influenced, and the plant root system extends among the ceramsite and absorbs and converts N, P pollutants in sewage in the ceramsite gaps.

The activated carbon adsorption layer is uniformly filled with columnar porous activated carbon with the length of 3-5mm, provides a habitat for microorganisms while adsorbing organic pollutants in water, forms a biological activated carbon adsorption film, and converts and degrades organic pollutants at all levels through the metabolism of the microorganisms.

The biological contact oxide layer uniformly hangs the carbon fiber artificial aquatic plants with moderate length, and the artificial aquatic plants are immersed in water to provide habitation sites for microorganisms to form a biological film, so that the biological contact oxide layer plays a role in adsorbing, converting and degrading pollutants; the bottom of the biological contact oxidation tank is uniformly provided with a microporous aeration pipe which is connected with an external air source to play the role of aeration and oxygenation. The bottom of the biological contact oxide layer is provided with a sewage outlet which is connected with an external sewage valve.

In the above embodiment, the filtering tank 5 is in a rectangular parallelepiped shape, the size of the filtering tank is matched with the amount of sewage to be treated, and the hydraulic retention time is not less than 30 min. The internal structure is as follows: the filtering tank 5 is filled with a first filtering material 51, a second filtering material 52 and a third filtering material 53 from top to bottom; the thickness of each filter material filling layer is basically consistent, and a stainless steel wire mesh or non-woven fabric is laid between every two layers for separation, so that the effects of intercepting and preventing the filter material from running off along with water are achieved. A sealing plate 54 is arranged at the upper part of the first filter material; a sixth connecting pipe 55 is arranged on the inner wall of the filtering tank 5 adjacent to the disinfecting tank 6 and is communicated with the filtering tank 5 and the disinfecting tank 6; the part of the sixth connecting pipe 55 located in the filtering tank 5 is embedded in the first filtering material 51, and the pipe wall is provided with a plurality of permeable holes, and the sixth connecting pipe 55 is higher than the fifth connecting pipe 45.

Preferably, the first filter material 51 is anthracite with the particle size of 2.0-4.0mm, the second filter material 52 is manganese sand with the particle size of 1.2-2.0mm, and the third filter material 53 is quartz sand with the particle size of 0.8-1.2 mm.

In the above embodiment, the disinfection tank 6 is a rectangular parallelepiped, and the hydraulic retention time is not less than 30 min. The internal structure is as follows: the top of the disinfection tank 6 is provided with a second feeding pipe 61; the second feeding pipe 61 is made of PVC-U material and is used for feeding disinfectant; a second stirrer 62 is arranged inside the disinfection tank 6; and a seventh connecting pipe 63 is arranged on the inner wall of the disinfection tank 6 adjacent to the clean water tank 7 and is used for communicating the disinfection tank 6 with the clean water tank 7, and the position of the seventh connecting pipe 63 is lower than that of the sixth connecting pipe 55.

And putting the disinfectant into the disinfection tank through a second feeding pipe, starting a second stirrer, and fully mixing and contacting the disinfectant and water under the stirring condition to disinfect the water body.

In the above embodiment, the drain pipe 71 is installed at the connection between the clean water tank 7 and the outside, and the drain pipe 71 is positioned lower than the seventh connection pipe 63.

The water discharged from the clean water tank can automatically flow to a river or a lake, so that the water pollution of the sewage outlet is greatly reduced, the hydrodynamic condition of the sewage outlet is improved, the running water circulation is realized, and the water quality is improved.

The utility model has the advantages of integrated design, compact and coherent structure, small floor area, capability of being buried under the ground or being arranged above the ground, convenient maintenance, full utilization of the sludge reflux effect, reduction of the dosage and the sludge amount, saving of the operation and maintenance cost and reduction of the periodic investment. Practice proves that in distributed discharge sewage treatment of the same scale, the investment of the combined water treatment reactor device is only 1/3-1/2 of the conventional water treatment process of a distributed sewage treatment station, and the operation and maintenance cost is as low as below 0.2 yuan/ton.

Meanwhile, the utility model has double effects of water quality purification and ecological restoration, has wide application, can be used for purifying and treating sewage at the discharge outlet of rivers and lakes, treating non-industrial wastewater such as initial rainwater, domestic sewage, hospital sewage, culture wastewater and the like, and can also be used as an in-situ treatment facility for water pollution of lakes and rivers to purify and restore water quality.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A combined water treatment reactor is characterized in that: the device comprises a sewage interception sedimentation tank (1), a flocculation reaction tank (2), a sedimentation tank (3), a biological purification tank (4), a filter tank (5), a disinfection tank (6) and a clean water tank (7), wherein the sewage interception sedimentation tank (1), the flocculation reaction tank (2), the sedimentation tank (3), the biological purification tank (4), the filter tank (5), the disinfection tank (6) and the clean water tank (7) are sequentially communicated; sewage is treated through sewage interception and sludge discharge, flocculation reaction, alum blossom precipitation, biological purification, medium filtration and disinfection until clear water is discharged.

2. A modular water treatment reactor as claimed in claim 1, wherein: cut dirty sedimentation tank (1) top and install inlet tube (11), first mud discharging mouth (12) have been seted up to the bottom, cut and install first connecting pipe (13) on dirty sedimentation tank (1) and flocculation reaction pond (2) adjacent lateral wall, the intercommunication cuts dirty sedimentation tank (1) and flocculation reaction pond (2), the mounting height of first connecting pipe (13) is less than inlet tube (11).

3. A modular water treatment reactor as claimed in claim 2, wherein: a partition plate (14) is arranged in the sewage interception settling pond (1), the partition plate (14) is connected with a top plate and a bottom plate of the sewage interception settling pond (1), and the sewage interception settling pond (1) is divided into a first settling pond (16) and a second settling pond (17); a second connecting pipe (15) is arranged on the partition plate (14) and is communicated with the first sedimentation tank (16) and the second sedimentation tank (17); the second connecting pipe (15) is higher than the first connecting pipe (13) in installation height; the number of the first sludge discharge ports (12) is two, and the two sludge discharge ports are respectively arranged on two sides of the partition plate (14).

4. A modular water treatment reactor as claimed in claim 2, wherein: the top of the flocculation reaction tank (2) is provided with a first feeding pipe (21); a first stirrer (22) is arranged in the flocculation reaction tank (2); a third connecting pipe (23) is arranged on the side wall of the flocculation reaction tank (2) adjacent to the sedimentation tank (3) and is communicated with the flocculation reaction tank (2) and the sedimentation tank (3), and the mounting height of the third connecting pipe (23) is lower than that of the first connecting pipe (13); and a second sludge discharge port (24) is formed at the bottom of the flocculation reaction tank (2).

5. The modular water treatment reactor of claim 4, wherein: the sedimentation tank (3) is provided with a fourth connecting pipe (31), a water-proof pore plate (32), an inclined pipe (33), a porous filter plate (34) and a sedimentation mud groove (35) from top to bottom; a plurality of water permeable holes are formed in the fourth connecting pipe (31), and the fourth connecting pipe is arranged on the adjacent side wall of the sedimentation tank (3) and the biological purification tank (4) and is communicated with the sedimentation tank (3) and the biological purification tank (4); the waterproof pore plate (32) and the porous filter plate (34) are horizontally arranged on the inner side wall of the sedimentation tank (3); the inclined pipes (33) are filled between the water-resisting pore plate (32) and the porous filter plate (34), and the inclined pipes (33) and the water-resisting pore plate (32) form an angle of 60 degrees; the settling sludge tank (35) is arranged at the bottom of the settling pond (3); a third sludge discharge port (36) leading to the outside is formed at the bottom of the sludge settling tank (35); the third connecting pipe (23) is positioned between the sediment sludge tank (35) and the porous filter plate (34).

6. The modular water treatment reactor of claim 5, wherein: the interior of the biological purification tank (4) is divided into a plant cultivation layer (41), an activated carbon adsorption layer (42) and a biological contact oxidation layer (43) from top to bottom; an aerator pipe (44) is arranged at the bottom of the biological contact oxidation layer (43), and the aerator pipe (44) is connected with an external aerator; the fourth connecting pipe (31) is positioned in a part of the biological purification tank and is embedded into a plant cultivation layer (41); and a fifth connecting pipe (45) is arranged on the side wall of the biological purification tank (4) adjacent to the filtering tank (5), and the fifth connecting pipe (45) is positioned at the lower part of the aeration pipe (44) and is communicated with the biological purification tank (4) and the filtering tank (5).

7. The modular water treatment reactor of claim 6, wherein: the plant cultivation layer (41) comprises a plant (411) and a ceramsite layer (412), and the plant (411) is planted on the ceramsite layer (412); the active carbon adsorption layer (42) is an active carbon filling layer; the biological contact oxidation layer (43) is a carbon fiber artificial aquatic weed filling layer.

8. The modular water treatment reactor of claim 6, wherein: the filtering tank (5) is filled with a first filtering material (51), a second filtering material (52) and a third filtering material (53) from top to bottom; a sealing plate (54) is arranged at the upper part of the first filter material; a sixth connecting pipe (55) is arranged on the inner wall of the filtering tank (5) adjacent to the disinfecting tank (6) and is communicated with the filtering tank (5) and the disinfecting tank (6); the part of the sixth connecting pipe (55) positioned in the filter tank (5) is embedded in the first filter material (51), the pipe wall of the sixth connecting pipe is provided with a plurality of water permeable holes, and the sixth connecting pipe (55) is higher than the fifth connecting pipe (45).

9. A modular water treatment reactor as claimed in claim 8, wherein: the first filter material (51) is anthracite, the second filter material (52) is manganese sand, and the third filter material (53) is quartz sand.

10. A modular water treatment reactor as claimed in claim 8, wherein: a second feeding pipe (61) is arranged at the top of the disinfection tank (6); a second stirrer (62) is arranged in the disinfection tank (6); a seventh connecting pipe (63) is arranged on the inner wall of the disinfection tank (6) adjacent to the clean water tank (7) and is used for communicating the disinfection tank (6) with the clean water tank (7), and the position of the seventh connecting pipe (63) is lower than that of the sixth connecting pipe (55); and a drain pipe (71) is arranged at the joint of the clean water tank (7) and the outside, and the position of the drain pipe (71) is lower than that of the seventh connecting pipe (63).