CN219429846U - Distributed modularized domestic sewage treatment equipment based on biological ecological coupling - Google Patents

Abstract

The application relates to the technical field of sewage treatment and discloses biological ecological coupling-based distributed modularized domestic sewage treatment equipment, which comprises a front-end treatment tank, a BAF filter tank and a monitoring system; the front-end treatment pool comprises a coarse grille treatment pool, a fine grille treatment pool and an oil stain collection bin which are arranged in series; the BAF filter tank comprises a tank body, a plant purifying module, a matrix purifying module, an aeration module and a back flushing module, wherein the matrix purifying module and the aeration module are arranged on a grid supporting plate, the back flushing module is arranged in an interlayer space between the grid supporting plate and the bottom of the tank body, and the plant purifying module is arranged at the top of the tank body; the monitoring system comprises a monitoring platform and a probe assembly, and the probe assembly is in communication connection with the monitoring platform; the probe assembly comprises a first water quality monitoring probe arranged at the water outlet end of the oil pollution collecting bin and a second water quality monitoring probe arranged at the water outlet end of the BAF filter tank. The application solves the problem that the nitrogen and phosphorus removal efficiency of the existing domestic sewage treatment equipment is low.

Description

Distributed modularized domestic sewage treatment equipment based on biological ecological coupling

Technical Field

The application relates to the technical field of sewage treatment, in particular to a biological ecological coupling-based distributed modularized domestic sewage treatment device.

Background

Compared with the common activated sludge process, the BAF filter (biological aerated filter) has the advantages of rich microorganism types, high concentration, high organic matter volume load and strong shock resistance; the BAF filter has small occupied area, and the occupied area can be reduced by increasing the height of the filling material; the BAF filter has simple process, low capital cost and running cost, and does not need a secondary sedimentation tank and a sludge reflux system; the BAF filter has a filtering effect and a good water outlet effect; the BAF filter is a semi-closed or fully-closed structure, and the biochemical reaction is less influenced by the external temperature.

Although the BAF filter has the advantages compared with the common activated sludge method, the existing BAF filter still has the problem of low denitrification and dephosphorization efficiency in the actual operation process.

Disclosure of Invention

Based on the technical problem, the application provides a distributed modularized domestic sewage treatment device based on biological ecological coupling, which solves the problem that the existing domestic sewage treatment device has lower nitrogen and phosphorus removal efficiency.

In order to solve the technical problems, the technical scheme adopted by the application is as follows:

in one aspect of the application, a biological ecological coupling based distributed modular domestic sewage treatment device is provided, which comprises a front-end treatment tank, a BAF filter tank and a monitoring system; the front-end treatment pool comprises a coarse grille treatment pool, a fine grille treatment pool and an oil stain collection bin which are arranged in series; the water inlet end of the coarse grille treatment pool is provided with a first water inlet pipe, and the water outlet end of the greasy dirt collecting bin is provided with a first water outlet pipe; the BAF filter comprises a tank body, a plant purification module, a matrix purification module, an aeration module and a back flushing module, wherein a second water inlet pipe and a second water outlet pipe which are distributed relatively are arranged on the tank body, and the second water inlet pipe is connected with the first water outlet pipe; the lower part of the tank body is provided with a grid supporting plate, the matrix purifying module and the aeration module are arranged on the grid supporting plate, the back flushing module is arranged in an interlayer space between the grid supporting plate and the bottom of the tank body, and the plant purifying module is arranged at the top of the tank body; the monitoring system comprises a monitoring platform and a probe assembly, and the probe assembly is in communication connection with the monitoring platform; the probe assembly comprises a first water quality monitoring probe arranged at the water outlet end of the oil stain collecting bin and a second water quality monitoring probe arranged at the water outlet end of the BAF filter tank.

Further, a basket type coarse grating and a track type artificial coarse grating are arranged in the coarse grating treatment tank, and a basket type fine grating and a track type artificial fine grating are arranged in the fine grating treatment tank.

Further, the plant purifying module comprises a partition plate, a root control basin and aquatic plants; the isolation plate is arranged at the top of the tank body; the root control basins are arranged on the isolation plate; the aquatic plant is planted in the root control basin, and the root system of the aquatic plant stretches into the pond body.

Further, the matrix purification module comprises a plurality of groups of matrix purification units, the matrix purification units are separated by guide plates, and the matrix purification units comprise phosphorus locking fillers and biological matrixes which are arranged in series.

Further, the aeration module comprises an aeration structure, an aeration fan and a power generation mechanism; the aeration structure comprises a microporous aeration disc and a microporous aeration pipe which are arranged at the front section of the tank body; the aeration fan is connected with the aeration structure through an aeration gas pipe; the power generation mechanism comprises a solar photovoltaic panel, the solar photovoltaic panel is electrically connected with a fan controller, and the fan controller is electrically connected with the aeration fan and the monitoring platform respectively.

Further, the back flush module comprises a back flush water distribution pipe, an air pump and a back flush valve; the back flushing water distribution pipe is arranged in an interlayer space between the grid bearing plate and the bottom of the tank body; the air pump is connected with the backwash water distribution pipe through a backwash air pipe and is electrically connected with the monitoring platform; the back flush valve is arranged on the back flush gas pipe.

Furthermore, the monitoring platform is also in communication connection with a plurality of mobile terminals.

Further, the second water outlet pipe is connected with one end of a sewage return pipe, the other end of the sewage return pipe is connected with the second water inlet pipe, and a three-way valve is arranged at the joint of the sewage return pipe and the second water outlet pipe.

Further, the second water inlet pipe is connected with a small-resistance water distribution system, and the small-resistance water distribution system is connected with the tank body; the second water outlet pipe is connected with a sewage absorption pipe, and the sewage absorption pipe is shallowly buried in the surrounding field.

Further, the top of the coarse grille treatment pool, the fine grille treatment pool and the oil stain collection bin are all provided with self-locking check covers.

Compared with the prior art, the beneficial effects of this application are:

the combined action of the coarse grille treatment pool, the fine grille treatment pool, the oil stain collection bin, the plant purification module, the matrix purification module, the aeration module and the back flush module improves the denitrification and dephosphorization efficiency of the domestic sewage treatment equipment, improves the sewage treatment effect of the biological sewage treatment equipment, and can simultaneously realize the advantages of low requirement on inflow SS (suspended matters), small back flush water head loss, low running cost, high pollutant removal treatment efficiency, compact equipment, small occupied area, strong impact load resistance, stable water quality of the effluent being superior to the three-level discharge standard of the wastewater pollutant discharge standard of the domestic sewage treatment facility (DB 51/2626-2019) and convenient maintenance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Wherein:

fig. 1 is a schematic structural diagram of a bio-ecological coupling-based decentralized modular domestic sewage treatment device according to some embodiments of the present application.

Fig. 2 is a schematic flow chart of a bio-ecological coupling-based distributed modular domestic sewage treatment method according to some embodiments of the present application.

The device comprises a first water inlet pipe, a 2 self-locking type inspection cover, a 3 track type artificial coarse grille, a 4 track type artificial fine grille, a 5 first water outlet pipe, a 6 basket type coarse grille, a 7 basket type fine grille, an 8 oil pollution collecting bin, a 9 solar photovoltaic panel, a 10 fan controller, an 11 aeration fan, a 12 back flush air pipe, a 13 air pump, a 14 aeration air pipe, a 15 back flush valve, 16 aquatic plants, a 17 root control basin, a 18 isolation plate, a 19 pool body, a 20 second water inlet pipe, a 21 second water outlet pipe, a 22 second water quality monitoring probe, a 23 three-way valve, a 24 biological matrix, a 25 phosphorus locking filler, a 26 microporous aeration disc, a 27 microporous aeration pipe, a 28 grid supporting plate, a 29 first water quality monitoring probe, a 30 back flush water distribution pipe, a 31 sewage return pipe, a 32 monitoring platform and a 33 mobile terminal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present application based on the described embodiments.

Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Referring to fig. 1, in some embodiments, a bio-ecologically coupled decentralized modular domestic sewage treatment facility is provided, comprising a front-end treatment tank, a BAF filter tank, and a monitoring system; the front-end treatment pool comprises a coarse grille treatment pool, a fine grille treatment pool and an oil stain collection bin 8 which are arranged in series; the water inlet end of the coarse grille treatment pool is provided with a first water inlet pipe 1, and the water outlet end of the greasy dirt collecting bin 8 is provided with a first water outlet pipe 5; the BAF filter tank comprises a tank body 19, a plant purifying module, a matrix purifying module, an aeration module and a back flushing module, wherein a second water inlet pipe 20 and a second water outlet pipe 21 which are distributed relatively are arranged on the tank body 19, and the second water inlet pipe 20 is connected with the first water outlet pipe 5; the lower part of the tank body 19 is provided with a grid supporting plate 28, a matrix purifying module and an aeration module are arranged on the grid supporting plate 28, a back flushing module is arranged in an interlayer space between the grid supporting plate 28 and the bottom of the tank body 19, and a plant purifying module is arranged at the top of the tank body 19; the monitoring system comprises a monitoring platform 32 and a probe assembly, and the probe assembly is in communication connection with the monitoring platform 32; the probe assembly comprises a first water quality monitoring probe 29 arranged at the water outlet end of the oil pollution collecting bin 8 and a second water quality monitoring probe 22 arranged at the water outlet end of the BAF filter tank.

In this embodiment, the front-end treatment tank is mainly used for primarily treating sewage, wherein the purpose of the coarse grille treatment tank and the fine grille treatment tank is to automatically intercept and remove impurities with various shapes in the sewage, and the oil dirt collection bin 8 is used for performing oil-water separation and solid-liquid separation on the sewage. The BAF filter filters sewage through the combined action of physical chemistry and biology, wherein, the plant purification module absorbs and processes the pollutant in the sewage through biological means, the matrix purification module removes the organic pollutant in the sewage through the metabolism of microorganism, the aeration module can strengthen the biochemical reaction of sewage and matrix purification module through water conservancy stirring characteristic and oxygenation effect, the back flush module is through regular water and air from bottom to top to the matrix module back flush and make the filter material get the washing, in order to maintain the normal operation of equipment. The monitoring platform 32 can monitor the sewage treatment conditions of the front-end treatment tank and the BAF filter tank in real time so as to control the operation of the sewage treatment equipment according to the sewage quality information feedback condition, wherein the first water quality monitoring probe 29 is used for monitoring the sewage quality treated by the front-end treatment tank, and after the water quality is qualified, the sewage is transferred to the BAF filter tank for treatment; the second water quality monitoring probe 22 is used for monitoring the water quality of the sewage treated by the BAF filter, and the sewage can be discharged after the water quality is qualified.

Wherein, the oil stain collection bin 8 at the tail end of the front end treatment tank is connected with the intelligent monitoring platform 32, and when the turbidity and the water quantity of the effluent of the oil stain collection bin 8 do not meet the water inlet standard of the BAF filter tank, the intelligent monitoring platform 32 automatically alarms to operation and maintenance personnel, and the operation and maintenance personnel can clear in time.

The monitoring system utilizes a new generation of information technology, collects, integrates and analyzes key information of water quality supervision through interconnection, internet of things, perception and intellectualization means, coordinates and operates all functions of a supervision full chain, distributes supervision resources more reasonably and fully, and enables supervision work to respond to demands intelligently. The first water quality monitoring probe 29 is connected with the tail end water outlet part of the front end treatment tank, the second water quality monitoring probe 22 is connected with the tail end water outlet part of the BAF filter tank, and compared with the conventional sewage monitoring equipment, the position of the probe is placed, whether the water outlet quality of the front end treatment tank is consistent with the water inlet requirement of the BAF filter tank can be clearly and intuitively detected, so that the pollutant impact load of the BAF filter tank is reduced from the source, and the service life of the BAF filter tank is prolonged; through the timing detection of the water quality and the water quantity, visual data can be formed and presented in a chart mode, and the water outlet condition and the operation and maintenance service condition of the equipment are reflected more intuitively.

Specifically, the water outlet end of the BAF filter is connected with the monitoring platform 32, and when the concentration of the COD5 (biochemical oxygen demand) of the water outlet of the BAF filter does not meet the discharge standard, the monitoring platform 32 automatically alarms to operation and maintenance personnel according to the conditions. The water outlet end of the BAF filter is connected with a monitoring platform 32, the P (phosphorus) and SS (suspended solids) contents in sewage are monitored in real time, and when the P or SS concentration exceeds 5% of the water outlet concentration, the flushing water quantity of the back flushing module is increased, and the back flushing is carried out on the BAF filter.

Specifically, front-end treatment pond and BAF filtering pond are modular structure, can be in the processing factory behind front-end treatment pond and the BAF filtering pond machine-shaping, transport to the target place and install for domestic sewage treatment equipment compact structure, area is little, and space utilization is high, and simple to operate. The front-end treatment tank and the BAF filter tank are in a modularized combination mode, the types and the quantity of each module can be flexibly adjusted according to the change of pollution factors, the installation mode is skid-mounted, the front-end treatment tank and the BAF filter tank are not limited by terrains, and the manufacturing materials are made of corrosion-resistant and ageing-resistant light materials so as to be convenient to carry.

Optionally, a basket type coarse grille 6 and a track type artificial coarse grille 3 are arranged in the coarse grille treatment pool, and a basket type fine grille 7 and a track type artificial fine grille 4 are arranged in the fine grille treatment pool.

Wherein, the combined application of the basket type coarse grille 6 and the rail type artificial coarse grille 3, the basket type fine grille 7 and the rail type artificial fine grille 4 enriches the grille shape and the density of the front-end treatment pool, and improves the grease and SS (suspended solids) removal rate by 25%. And the basket type and rail type thick and thin grids are convenient to clean, so that the maintenance time and the cost are saved.

Optionally, the plant purification module comprises a partition plate 18, a root control basin 17 and aquatic plants 16; the isolation plate 18 is arranged at the top of the tank body 19; a plurality of root control basins 17 are arranged on the isolation plate 18; the aquatic plant 16 is planted in the root controlling basin 17, and the root system of the aquatic plant 16 extends into the pond 19.

Wherein, fix accuse root basin 17 through division board 18, aquatic plant 16 plants in accuse root basin 17, has overcome the defect that the root that conventional container educated seedling brought twines, reduces the risk of BAF filtering pond jam for aquatic plant 16's total root volume increases 30-50 times, increases aquatic plant 16's absorption to N, P, C element in the liquid phase.

Besides the bearing and mounting of the root control basin 17, the isolation plate 18 can isolate and block exogenous pollution such as surface runoff, branches and leaves, and the like, so that the stable operation of the BAF filter is ensured.

Compared with common sewage treatment equipment, the equipment has certain economic and landscape benefits. The modularized aquatic plants 16 select native plants with good ecological adaptability and ecological construction functions, and form landscape elements and beautify the environment by combining landscape design concepts; the aquatic plants 16 can be harvested and sold, and the dried branches of the aquatic plants can be composted with straw, so that economic benefits of agricultural products are increased.

Alternatively, the matrix purification module comprises a plurality of groups of matrix purification units, the matrix purification units are separated by guide plates, and the matrix purification units comprise phosphorus locking fillers 25 and biological matrixes 24 which are arranged in series.

Wherein, the substrate purifying unit finishes the advanced treatment of sewage through the filtration, adsorption, catalytic oxidation and the oxidation treatment of microorganisms of the biological substrate 24. In addition, the up-to-standard treatment of sewage is realized by adding the phosphorus locking filler 25 and optimizing the proportion of the rest fillers.

Wherein the biological substrate 24 has colonies attached thereto, thereby performing a biochemical reaction with organic pollutants in the sewage by using the colonies. The biological matrix 24 provides a growth carrier for denitrifying bacteria, and provides a slow-release carbon source and an anoxic environment, so that the nitrate nitrogen is converted into nitrogen through denitrification reaction, and the nitrogen is removed from the system, thereby completing the removal of nitrogen.

The phosphorus locking filler 25 can lock and remove phosphorus in sewage, and the phosphorus locking principle is that the phosphorus locking agent in the phosphorus locking filler 25 can be one-to-one chelated with phosphate ions in sewage, so that the phosphorus locking agent and the phosphate ions are locked, and further the total phosphorus in the sewage is efficiently reduced.

Wherein, an upflow water distribution system is formed in the tank body 19 through the guide plate, organic pollutants in the sewage are removed through the upflow water distribution system, ammonia nitrogen is oxidized into nitrate nitrogen, and the dissolved oxygen of the upflow water distribution system is controlled at 2-6 mg/L; the method realizes the effective separation of the activated sludge SRT (activated sludge retention time) and the HRT (activated sludge credential retention time), retains bacteria with longer generation time, and simultaneously reduces the degradation mechanism based on pollutant in-situ, thereby greatly reducing the sludge yield.

And the sewage treated by the previous matrix purifying unit can be drained into the next matrix purifying unit for treatment by the guide plate,

optionally, the aeration module comprises an aeration structure, an aeration fan 11 and a power generation mechanism; the aeration structure comprises a microporous aeration disc 26 and a microporous aeration pipe 27 which are arranged at the front section of the tank body 19; the aeration fan 11 is connected with an aeration structure through an aeration gas pipe 14; the power generation mechanism comprises a solar photovoltaic panel 9, the solar photovoltaic panel 9 is electrically connected with a fan controller 10, and the fan controller 10 is electrically connected with an aeration fan 11 and a monitoring platform 32 respectively.

Wherein, the aeration structure that micropore aeration disc 26 and micropore aeration pipe 27 combine has good water conservancy stirring characteristic and oxygenation effect to carry out intensive mixing to sewage, strengthen the treatment effeciency of biological matrix 24 to sewage.

Wherein, solar photovoltaic panel 9, fan controller 10, aeration structure etc. are linked with monitoring platform 32 in a combined way, realize that equipment realizes intermittent type nature oxygenation aeration under the condition that no commercial power, industrial electricity is used, provide good propagation condition for the fungus crowd in the BAF filtering pond, increase 30% COD (chemical oxygen demand) and reduce volume compared with ordinary BAF filtering pond.

When the COD5 (biochemical oxygen demand) concentration exceeds the effluent concentration by 5% -10%, increasing the aeration frequency of the aeration fan 11, and feeding back the current situation of one-time treatment to operation and maintenance personnel at intervals of 0.5 h; when the COD5 concentration exceeds the effluent concentration by 10% -20%, the operation and maintenance personnel manually control the frequency of the aeration fan 11 and the opening and closing degree of the reflux valve; when the COD5 concentration exceeds the effluent concentration by more than or equal to 20%, the operation and maintenance personnel go to a sewage treatment station for condition evaluation.

Optionally, the back flush module comprises a back flush water distribution pipe 30, an air pump 13 and a back flush valve 15; the back flushing water distribution pipe 30 is arranged in an interlayer space between the grid bearing plate 28 and the bottom of the tank body 19; the air pump 13 is connected with the back flush water distribution pipe 30 through the back flush air transmission pipe 12, and the air pump 13 is electrically connected with the monitoring platform 32; a backwash valve 15 is provided above backwash air conduit 12.

Wherein, the back flush valve 15 is opened, and the air pump 13 is used for supplying air to the back flush water distribution pipe 30 to flush the matrix module so as to maintain the normal operation of the equipment.

Specifically, the water quantity and head loss of the back flushing are reduced to the minimum by controlling the comprehensive factors such as the opening and closing degree of the valve of the back flushing valve, the arrangement of the back flushing water distribution pipes 30, the packing density and the like.

Optionally, the monitoring platform 32 is also communicatively connected to a number of mobile terminals 33.

The monitoring platform 32 and the APP of the mobile terminal 33 form a supervision grid system, and operation and maintenance services are clear and visual through data real-time feedback.

Optionally, the second water outlet pipe 21 is connected with one end of the sewage return pipe 31, the other end of the sewage return pipe 31 is connected with the second water inlet pipe 20, and a three-way valve 23 is arranged at the joint of the sewage return pipe 31 and the second water outlet pipe 21.

The sewage reflux pipe 31 can reflux sewage which does not meet the discharge standard to the BAF filter tank for purifying and filtering again, so that the sewage can be discharged after meeting the discharge standard, and the sewage treatment quality of the equipment is ensured.

Optionally, the second water inlet pipe 20 is connected with a small-resistance water distribution system, and the small-resistance water distribution system is connected with the tank body 19; the second water outlet pipe 21 is connected with a sewage absorption pipe which is shallow buried in the surrounding field.

Wherein, in order to effectively realize upflow water distribution, uniform water distribution, accumulation of the placed biological matrix 24, uneven water distribution, short flow and the like, the tank body 19 is provided with a small-resistance water distribution system connected with the second water inlet pipe 20.

Wherein, in order to enhance the recycling of tail water, the sewage discharged by the BAF filter is self-flowed to the surrounding field for dispersion treatment by the shallow burying way through the sewage absorption pipe.

Optionally, the tops of the coarse grating treatment tank, the fine grating treatment tank and the oil dirt collecting bin 8 are respectively provided with a self-locking check cover 2.

The corresponding self-locking inspection cover 2 is opened to overhaul the coarse grating treatment tank, the fine grating treatment tank or the oil pollution collecting bin 8, and when the self-locking inspection cover is closed, the coarse grating treatment tank, the fine grating treatment tank and the oil pollution collecting bin 8 form semi-closed equipment, so that surface runoff pollution can be placed, and the problems of overhigh equipment pollutant load or equipment blockage caused by exogenous pollutants brought by surface runoff are effectively reduced. The front-end treatment tank adopts a semi-closed structure, has functions of precipitation and anaerobic fermentation of the septic tank on the existing oil removal and slag removal functions, and increases hydraulic retention time (more than or equal to 36 h) of the process flow.

Referring to fig. 2, in some embodiments, a bio-ecological coupling-based distributed modular domestic sewage treatment method is provided, and the bio-ecological coupling-based distributed modular domestic sewage treatment apparatus includes:

s201, introducing sewage into a front-end treatment tank, and sequentially utilizing a coarse grille treatment tank, a fine grille treatment tank and an oil pollution collection bin 8 to treat the sewage to obtain first purified water;

s202, detecting first purified water by using a first water quality monitoring probe 29, and introducing the first purified water into a BAF filter if the water quality of the first purified water meets the water inlet condition of the BAF filter;

s203, under the combined action of a plant purification module, a matrix purification module and an aeration module in the BAF filter, treating the first purified water to obtain second purified water;

s204, detecting the second purified water by using the second water quality monitoring probe 22, and discharging the second purified water if the water quality of the second purified water meets the discharge standard.

The above is an embodiment of the present application. The foregoing embodiments and the specific parameters in the embodiments are only for clearly describing the verification process of the application, and are not intended to limit the scope of the application, which is defined by the claims, and all equivalent structural changes made by applying the descriptions and the drawings of the application are included in the scope of the application.

Claims (10)

1. A bio-ecological coupling-based distributed modular domestic sewage treatment device, comprising:

the front-end treatment tank comprises a coarse grid treatment tank, a fine grid treatment tank and an oil stain collection bin which are arranged in series; the water inlet end of the coarse grille treatment pool is provided with a first water inlet pipe, and the water outlet end of the greasy dirt collecting bin is provided with a first water outlet pipe;

the BAF filter comprises a tank body, a plant purification module, a matrix purification module, an aeration module and a back flushing module, wherein a second water inlet pipe and a second water outlet pipe which are distributed relatively are arranged on the tank body, and the second water inlet pipe is connected with the first water outlet pipe; the lower part of the tank body is provided with a grid supporting plate, the matrix purifying module and the aeration module are arranged on the grid supporting plate, the back flushing module is arranged in an interlayer space between the grid supporting plate and the bottom of the tank body, and the plant purifying module is arranged at the top of the tank body;

the monitoring system comprises a monitoring platform and a probe assembly, and the probe assembly is in communication connection with the monitoring platform; the probe assembly comprises a first water quality monitoring probe arranged at the water outlet end of the oil stain collecting bin and a second water quality monitoring probe arranged at the water outlet end of the BAF filter tank.

2. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein:

the coarse grille treatment pool is provided with a basket type coarse grille and a track type artificial coarse grille, and the fine grille treatment pool is provided with a basket type fine grille and a track type artificial fine grille.

3. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein the plant purification module comprises:

the isolation plate is arranged at the top of the pool body;

the root control basins are arranged on the isolation plate;

the aquatic plant is planted in the root control basin, and the root system of the aquatic plant stretches into the pond body.

4. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein:

the matrix purification module comprises a plurality of groups of matrix purification units, the matrix purification units are separated by guide plates, and the matrix purification units comprise phosphorus locking fillers and biological matrixes which are arranged in series.

5. A bio-ecologically coupled decentralized modular domestic sewage treatment unit according to claim 1, wherein the aeration module comprises:

the aeration structure comprises a microporous aeration disc and a microporous aeration pipe which are arranged at the front section of the tank body;

the aeration fan is connected with the aeration structure through an aeration gas pipe;

the power generation mechanism comprises a solar photovoltaic panel, the solar photovoltaic panel is electrically connected with a fan controller, and the fan controller is electrically connected with the aeration fan and the monitoring platform respectively.

6. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein the backwash module comprises:

the back flush water distribution pipe is arranged in an interlayer space between the grid bearing plate and the bottom of the tank body;

the air pump is connected with the backwash water distribution pipe through a backwash air pipe and is electrically connected with the monitoring platform;

and the back flush valve is arranged on the back flush gas pipe.

7. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein:

the monitoring platform is also in communication connection with a plurality of mobile terminals.

8. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein:

the second water outlet pipe is connected with one end of a sewage return pipe, the other end of the sewage return pipe is connected with the second water inlet pipe, and a three-way valve is arranged at the joint of the sewage return pipe and the second water outlet pipe.

9. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein:

the second water inlet pipe is connected with a small-resistance water distribution system, and the small-resistance water distribution system is connected with the tank body; the second water outlet pipe is connected with a sewage absorption pipe, and the sewage absorption pipe is shallowly buried in the surrounding field.

10. The bio-ecological coupling based decentralized modular domestic sewage treatment device according to claim 1, wherein:

the top of the coarse grille treatment pool, the fine grille treatment pool and the oil stain collection bin are all provided with self-locking check covers.