Rural domestic sewage resource utilization device based on black and grey water qualitative collection

Abstract

The utility model discloses a rural domestic sewage resource utilization device based on black and grey water quality collection, which comprises a pool body, the pool body comprises a black water treatment unit, a grey water treatment unit, a comprehensive treatment unit and a clear water pool, the black water treatment unit and the grey water treatment unit are respectively arranged on two sides of the comprehensive treatment unit, the black water treatment unit is connected with a black water inlet pipe, and the grey water treatment unit is connected with a grey water outlet pipe. The grey water treatment unit is connected with a grey water inlet pipe, the comprehensive treatment unit comprises an adjusting tank unit and a constructed wetland unit, the water inlet end of the adjusting tank unit is connected with the water outlet ends of the black water treatment unit and the grey water treatment unit, the constructed wetland unit is communicated with the clean water tank, and the clean water tank is provided with a discharge overflow pipe. The device is simple in process, complete in flow, compact in structure and efficient in space utilization, meets the requirements of farmers for quality-divided utilization of water and fertilizer during farming, can also meet the requirements for storage and discharge of sewage during slack farming, realizes deep combination of resource utilization and up-to-standard discharge of rural domestic sewage, and relieves the problem of agricultural and rural non-point source pollution.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, especially is based on rural domestic sewage resource utilization device of black ash water quality collection. BACKGROUND

[0002] Rural domestic sewage contains a large amount of organic matter, nitrogen and phosphorus nutrients, etc., and moderate treatment and resource utilization is considered as the best mode of sewage treatment. Compared with towns, rural domestic sewage has the characteristics of similar water quality and farmland irrigation water quality standard, easy to reach standard, etc., and moderate treatment is beneficial to reduce energy consumption and construction and operation cost, and resource utilization is beneficial to alleviate the agricultural water shortage status. Rural domestic sewage is mainly derived from the sewage generated in daily life such as excrement and urine, washing, showering, miscellaneous use, etc. The organic pollutants and nutrient salts such as nitrogen and phosphorus contained in the sewage such as excrement and urine flushing toilet are relatively high, which is usually called black water, and the others are called grey water. Black water and grey water can be collected and treated together, and the nitrogen and phosphorus nutrients rich in black water can be recycled and utilized.

[0003] From the current situation, the rural domestic sewage treatment mode can be summarized as follows: urban and rural unified treatment mode, village centralized treatment mode, and farmer treatment mode. The urban and rural unified treatment mode has high requirements for the geographical location and other conditions of the village, and the radius of the urban sewage pipe network extension is generally about 5 kilometers, and the cost is too high beyond the range; The village centralized treatment mode often adopts the laying mode of urban pipe network, and the centralized collection and treatment cost is high, the construction and operation cost is large, and in the plain area, the pipe network must have a certain slope from the farmer to the centralized collection point, otherwise the domestic sewage is difficult to flow into by using the self-weight flow; The farmer treatment mode is suitable for villages where centralized pipe network laying or centralized collection and treatment is not available, and usually only black water is treated and utilized, there is no good treatment method for grey water, and the storage problem of sewage during slack season cannot be solved.

[0004] Therefore, it is necessary to consider the water and fertilizer demand of "three rural issues" based on the characteristics of rural population and sewage production and discharge, overcome the shortcomings of the prior art, and provide a rural domestic sewage treatment integrated device for the vast rural areas, especially the hilly and mountainous areas which are not convenient for urban and rural pipe network and centralized collection and treatment due to the uneven terrain, which can save land occupation, reduce energy consumption and cost, and reduce cost under the premise of ensuring full collection and treatment of sewage. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a rural domestic sewage resource utilization device based on black and grey water quality collection, realizing the deep combination of rural domestic sewage resource utilization and standard discharge, and alleviating the agricultural and rural non-point source pollution problem.

[0006] The utility model realizes the purpose by the following technical scheme:

[0007] The rural domestic sewage resource utilization device based on black and grey water quality collection comprises a pool body, the pool body comprises a black water treatment unit, a grey water treatment unit, a comprehensive treatment unit and a clear water pool, the black water treatment unit and the grey water treatment unit are separately arranged on the two sides of the comprehensive treatment unit, the black water treatment unit is connected with a black water inlet pipe, the grey water treatment unit is connected with a grey water inlet pipe, the comprehensive treatment unit comprises an adjusting pool unit and an artificial wetland unit, the water inlet end of the adjusting pool unit is connected with the water outlet ends of the black water treatment unit and the grey water treatment unit, the artificial wetland unit is communicated with the clear water pool, and the clear water pool is provided with an external overflow pipe.

[0008] Further, the black water treatment unit comprises a black water primary anaerobic pool, a black water secondary anaerobic pool and a black water temporary storage pool arranged in sequence, the black water inlet pipe is communicated with the black water primary anaerobic pool, and the black water temporary storage pool is communicated with the adjusting pool unit.

[0009] Further, the black water primary anaerobic pool, the black water secondary anaerobic pool and the black water temporary storage pool are all provided with an inverted L-shaped manure pipe, the L-shaped manure pipe in the black water primary anaerobic pool is communicated with the black water secondary anaerobic pool, the L-shaped manure pipe in the black water secondary anaerobic pool is communicated with the black water temporary storage pool, and the L-shaped manure pipe in the black water temporary storage pool is communicated with the adjusting pool unit.

[0010] Further, the grey water treatment unit comprises an oil separation pool and a grey water anaerobic pool arranged in sequence, the grey water inlet pipe is communicated with the oil separation pool, the oil separation pool is communicated with the grey water anaerobic pool through a grey water overflow pipe, and the grey water anaerobic pool is communicated with the adjusting pool unit through an inverted L-shaped water pipe.

[0011] Further, a plurality of oil intercepting plates and baffles are arranged at intervals in the middle of the oil separation pool, the baffle is arranged close to the rear lower part of the oil intercepting plate, the lower end of the baffle is connected with the pool bottom of the oil separation pool, and a filter frame is movably arranged between the oil intercepting plate and the pool wall on the water inlet side in the oil separation pool.

[0012] Further, the left and right side walls of the adjusting pool unit are staggered with flow guides.

[0013] Further, a baffle is arranged in the middle of the artificial wetland unit, the baffle divides the artificial wetland unit into a downward flow artificial wetland and an upward flow artificial wetland, a water pipe is arranged at the lower part of the baffle and communicated with the downward flow artificial wetland and the upward flow artificial wetland, the downward flow artificial wetland is communicated with the adjusting pool unit through a water distribution pipe, and the upward flow artificial wetland is communicated with the clear water pool through a water collecting pipe.

[0014] Further, the artificial wetland unit is sequentially laid with a large-diameter pebble layer, a small-diameter pebble layer, a gravel layer and a planting soil layer from bottom to top, plants are planted on the planting soil layer, and the gravel layer has a smaller diameter than the small-diameter pebble layer.

[0015] Further, the water distribution pipe member comprises a water distribution main pipe connected to the adjusting pool unit, and a plurality of water distribution branch pipes are arranged at intervals on both sides of the water distribution main pipe, and water distribution holes are formed in the lower ends of the water distribution main pipe and the water distribution branch pipes.

[0016] Further, the water collection pipe member comprises a water collection main pipe connected to the clean water pool, and a plurality of water collection branch pipes are arranged at intervals on both sides of the water collection main pipe, and water collection holes are formed in the lower ends of the water collection main pipe and the water collection branch pipes.

[0017] The utility model has the following advantages:

[0018] 1. The device has simple process, complete process, compact structure and efficient space utilization, and basically does not need operation and maintenance, can meet the quality utilization demand of farmers to water and fertilizer during farming, and can also meet the storage and discharge demand of sewage during slack season. On the process, the patent mainly uses anaerobic and artificial wetland to treat sewage, and has good effluent quality, simple maintenance, low management requirement and small amount of sludge production; on the process, the patent designs two water paths according to the water quality and quantity characteristics of black water and grey water, effectively improving the applicability of the facility; on the structure, the positions of the treatment units are arranged compactly, and the whole is symmetrical left and right to adapt to the process flow; on the space, the facility occupies small area, can be pre-buried and installed on the land of the farmer, does not need additional land, and avoids the problem of difficult coordination of agricultural land.

[0019] 2. The patent is a non-powered sewage treatment facility, does not need electric energy, can save electric energy cost; the patent does not need complex biochemical or physical treatment link, does not need to add carbon source and reagent, can save reagent cost; the patent basically does not need personnel maintenance, only needs to regularly clean the facility, harvest the artificial wetland, and can save labor cost.

[0020] 3. By combining with the artificial wetland, suitable aquatic plants can be flexibly matched according to the actual demand of crop planting in the courtyard of the farmer, the decontamination effect is assisted and consolidated, and the beautiful landscape effect is also possessed. Nitrogen and phosphorus nutrient elements in wastewater are absorbed and utilized by the growth of crops or plants, the microbial attachment space and oxygen transfer capacity are provided by the extension of plant root systems, an aerobic-facultative environment is created, and the purification of organic matter, nitrogen and phosphorus pollutants is synergistically strengthened.

[0021] 4, The device is integrated and designed, easy to transport, simple to install, and the construction cost is controllable. The process technology is simple, which can effectively reduce the energy consumption and material consumption in the operation stage, and is suitable for single rural domestic sewage treatment in terms of operation and maintenance management and operation and maintenance cost, which can effectively make up for the shortage of existing pollution control environmental protection technology equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a plan view of the utility model.

[0023] Figure 2 It is a plan view of the utility model.

[0024] Figure 3 It is Figure 1 the sectional view of A-A.

[0025] Figure 4 It is Figure 1 the sectional view of B-B.

[0026] Figure 5 It is Figure 1 the sectional view of C-C.

[0027] Figure 6 It is a process flow chart of the utility model.

[0028] In the drawing, 1-pool body, 2-black water inlet pipe, 3-gray water inlet pipe, 4-regulating pool unit, 5-construction wetland unit, 6-clean water pool, 7-overflow pipe, 8-black water primary anaerobic tank, 9-black water secondary anaerobic tank, 10-black water temporary storage tank, 11-L-shaped excrement pipe, 12-excrement outlet, 13-oil separation tank, 14-gray water anaerobic tank, 15-gray water overflow pipe, 16-L-shaped water pipe, 17-oil interception plate, 18-baffle, 19-filtration frame, 20-guiding plate, 21-baffle, 22-water pipe, 23-water distribution main pipe, 24-water distribution branch pipe, 25-water collection main pipe, 26-water collection branch pipe, 27-large-diameter gravel layer, 28-small-diameter gravel layer, 29-gravel layer, 30-planting soil layer, 31-air exhaust pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents the preferred application of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0031] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0032] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Reference Figures 1-6 As shown in the drawings, one embodiment of the present application is:

[0036] The rural domestic sewage resource utilization device based on black and gray water quality collection comprises a pool body 1, the pool body 1 comprises a black water treatment unit, a gray water treatment unit, a comprehensive treatment unit and a clear water pool 6, the black water treatment unit and the gray water treatment unit are separately arranged on the two sides of the comprehensive treatment unit, the black water treatment unit is connected with a black water inlet pipe 2, the gray water treatment unit is connected with a gray water inlet pipe 3, the comprehensive treatment unit comprises an adjusting pool unit 4 and an artificial wetland unit 5, the water inlet end of the adjusting pool unit 4 is connected with the water outlet ends of the black water treatment unit and the gray water treatment unit, the artificial wetland unit 5 is communicated with the clear water pool 6, and the clear water pool 6 is provided with an external overflow pipe 7.

[0037] The pool body of the present application is designed in an integrated manner, has simple process, complete flow, compact structure, high efficient space utilization and stable effect, is flexible and adaptive to the water and fertilizer use requirements of single family in rural areas, can realize less operation and maintenance, and meets the requirements of sewage resource utilization and standard discharge.

[0038] Specifically, the black water treatment unit comprises a black water first anaerobic tank 8, a black water second anaerobic tank 9 and a black water temporary storage tank 10 arranged in sequence, the black water inlet pipe 2 is communicated with the black water first anaerobic tank 8, and the black water temporary storage tank 10 is communicated with the adjusting pool unit 4.

[0039] The black water first anaerobic tank 8 mainly plays a role of sedimentation and fermentation. After the fresh excrement enters the first tank, the excrement is decomposed through anaerobic fermentation to form excrement skin on the upper layer, excrement liquid on the middle layer and excrement residue on the lower layer. This process can sediment parasitic eggs and decompose protein organic matter through anaerobic fermentation, and has the effect of killing parasitic eggs and pathogenic bacteria.

[0040] The black water second anaerobic tank 9 mainly plays a role of further fermentation and sedimentation. The amount of excrement skin and excrement residue in the unit is reduced, the degree of fermentation and decomposition is lower, and the excrement liquid is in a static state, which is beneficial to the sinking of the parasitic eggs floating in the excrement tank. This step further removes residual parasitic eggs and pathogenic microorganisms.

[0041] The black water temporary storage tank 10 mainly plays a role of storing the treated excrement liquid. The excrement liquid treated through the previous two units enters the unit, basically does not contain parasitic eggs and pathogenic microorganisms, reaches the harmless requirement of excrement, and can be taken by the farmers in the unit for use in farmland fertilization or as fertilizer.

[0042] The black water first anaerobic tank 8, the black water second anaerobic tank 9 and the black water temporary storage tank 10 are each provided with an inverted L-shaped excrement passing pipe 11, the L-shaped excrement passing pipe in the black water first anaerobic tank 8 is communicated with the black water second anaerobic tank 9, the L-shaped excrement passing pipe in the black water second anaerobic tank 9 is communicated with the black water temporary storage tank 10, and the L-shaped excrement passing pipe in the black water temporary storage tank 10 is communicated with the adjusting pool unit 4.

[0043] The black water first-stage anaerobic tank 8, the black water second-stage anaerobic tank 9 and the upper end of the black water temporary storage tank 10 are each provided with a manure cleaning port 12 for facilitating the cleaning of manure. An exhaust pipe 31 above the tank body is arranged to be higher than the ground, for discharging the ammonia gas generated by the anaerobic reaction. The pipe opening of the L-shaped manure pipe in the black water first-stage anaerobic tank 8 is 0.335 m away from the bottom of the tank, for preventing manure residues and manure skin from entering the next treatment tank; the pipe opening of the L-shaped manure pipe in the black water second-stage anaerobic tank 9 is 0.5 m away from the bottom of the tank, for preventing manure residues from entering the next treatment tank; the pipe opening of the L-shaped manure pipe in the black water temporary storage tank 10 is 0.5 m away from the bottom of the tank, for preventing manure residues from entering the regulating tank unit.

[0044] Further, the grey water treatment unit comprises an oil separation tank 13 and a grey water anaerobic tank 14 arranged in sequence, the grey water inlet pipe 3 is connected to the oil separation tank 13, the oil separation tank 13 is connected to the grey water anaerobic tank 14 through a grey water overflow pipe 15, and the grey water anaerobic tank 14 is connected to the regulating tank unit 4 through an inverted L-shaped water pipe 16.

[0045] A plurality of oil intercepting plates 17 and baffles 18 are arranged at intervals in the middle of the oil separation tank 13, the baffles 18 are arranged close to the rear lower part of the oil intercepting plates 17, and the lower end of the baffles 18 is connected to the bottom of the oil separation tank 13, and a filter frame 19 is movably arranged in the compartment between the oil intercepting plates 17 and the tank wall on the water inlet side in the oil separation tank 13.

[0046] The main functions of the oil separation tank are: 1. to separate oil and water, by taking advantage of the difference in specific gravity between oil and water in the grey water, the oil is effectively separated from the grey water; 2. to remove other solid impurities in the grey water, such as vegetable leaves, rice grains and hair, etc. If these impurities are not removed in time, they will accumulate in the sewage pipe and cause blockage. Therefore, the embodiment preferably comprises two oil intercepting plates and two baffles, so that the oil separation tank has three spaces in the shape of "four stops and three grids", the first grid is provided with a filter frame 19 through a hanger on the upper part, with a pore size of about 3 mm, for realizing solid-liquid separation; the second grid is an oil-water separation zone, for realizing oil-water separation; the third grid is a drainage zone, the grey water from which, after removal of oil and solid impurities, enters the grey water anaerobic tank 14; a sludge cleaning port is arranged on the upper part of the oil separation tank 13 for facilitating the cleaning of oil and impurities.

[0047] The main function of the grey water anaerobic tank is to provide an anaerobic environment to promote the reproduction and activity of anaerobic microorganisms, which degrade the organic matter in the grey water into organic acids, alcohols and gases through processes such as fermentation and lactic acid fermentation; at the same time, under the anaerobic environment, some anaerobic microorganisms can perform denitrification to reduce the content of nitrogen by reducing nitrate to nitrogen; some microorganisms and substances in the anaerobic tank can also adsorb and release phosphorus, thereby reducing the content of phosphorus in the sewage. After being treated by the unit, the sewage can be taken by the farmers for use as water resources for irrigating crops.

[0048] The present embodiment is provided with a slag removal port above the grey water anaerobic tank to facilitate the removal of sludge, and the L-shaped water pipe 16 is 0.475 m away from the tank bottom to prevent sludge from entering the regulating tank unit.

[0049] Further, the regulating tank unit 4 is provided with a slag removal port above the tank body to facilitate the removal of sludge, and the left and right sidewalls are respectively communicated with the corresponding black water temporary storage tank 10 and the grey water anaerobic tank, and staggered with flow guides 20, preferably 3 flow guides in the present embodiment, to achieve the effect of uniform water quality.

[0050] The main functions of the regulating tank unit are: 1. regulating water quantity, balancing the inflow and outflow by storing and releasing wastewater, to ensure the normal operation of the treatment system during peak and trough periods; 2. balancing water quality, mixing and precipitating black water and grey water to make the water quality entering the subsequent treatment unit more uniform, reducing the impact of water quality fluctuations on the treatment process.

[0051] In the present embodiment, the artificial wetland unit 5 is provided with a baffle 21 in the middle, which separates the artificial wetland unit into a downward flow artificial wetland and an upward flow artificial wetland, and the lower part of the baffle is provided with a water pipe 22 communicating the downward flow artificial wetland and the upward flow artificial wetland, the downward flow artificial wetland is connected to the regulating tank unit through a water distribution pipe, and the upward flow artificial wetland is connected to the clear water tank through a water collection pipe.

[0052] The artificial wetland unit adopts an artificial wetland system with a unique downward flow-upward flow composite water flow mode, which makes the water flow more fully through the entire treatment substrate, solves the problem of "short circuit" in the previous infiltration wetland, and forms a composite water treatment structure with coexistence of aerobic and anaerobic conditions, significantly improving the treatment effect of the system. The downward-upward flow artificial wetland has good removal effect on organic matter, suspended solids, nitrogen, phosphorus and other nutrients in wastewater, and the dissolved oxygen of the effluent is significantly higher than that of the influent.

[0053] The artificial wetland unit is sequentially provided with a large-diameter pebble layer 27, a small-diameter pebble layer 28, a gravel layer 29, and a planting soil layer 30 from bottom to top, plants are planted on the planting soil layer, and the particle size of the gravel of the gravel layer is smaller than that of the pebbles of the small-diameter pebble layer. Specifically, 400 mm pebbles (particle size 30-50 mm), 250 mm pebbles (particle size 15-25 mm), 250 mm gravel (particle size 5-10 mm), and 300 mm planting soil are sequentially laid from bottom to top, and plants such as canna are planted above the planting soil. According to the actual needs of crop planting in the farmer's courtyard, flexible matching of suitable crops or aquatic plants can be carried out to assist in consolidating the decontamination effect and have a beautiful landscape effect.

[0054] The down-flow constructed wetland is laid on the gravel layer and is provided with water distribution pipe fittings including a water distribution main pipe 23 connected with the adjusting pool unit 4, a plurality of water distribution branch pipes 24 arranged at intervals on both sides of the water distribution main pipe 23, and water distribution holes formed in the lower ends of the water distribution main pipe 23 and the water distribution branch pipes 24. The sewage is treated and purified from top to bottom and then enters the front up-flow constructed wetland through the water overflow pipe 22 at the lower part of the baffle 21.

[0055] The up-flow constructed wetland is laid on the gravel layer and is provided with water collection pipe fittings including a water collection main pipe 25 connected with the clean water pool 6, a plurality of water collection branch pipes 26 arranged at intervals on both sides of the water collection main pipe 25, and water collection holes formed in the lower ends of the water collection main pipe 25 and the water collection branch pipes 26. The sewage is treated and purified from bottom to top and then overflows into the clean water pool 6 after being collected by the laid water collection main pipe and water collection branch pipes.

[0056] The clean water pool 6 mainly stores the treated clean water for farmers to take and irrigate the fields. A clean residue outlet is arranged at the upper part of the pool body to facilitate the removal of the bottom mud, and the overflow discharge pipe 7 is used to realize overflow discharge when the farmers do not need water.

[0057] In order to make the pool body structure regular, in combination with the pool body structure layout and the feature that the space of the oil separation pool can be relatively small, the clean water pool 6 is arranged between the constructed wetland unit 5 and the oil separation pool, and the lower part of the clean water pool 6 can extend to the lower part of the oil separation pool 13.

[0058] The device is a sewage treatment device. The hydraulic path thereof fully utilizes the natural water level gradient to realize gravity overflow according to the structural features, spatial positions and functional requirements of various treatment units, so as to ensure the rationalization and maximization of the hydraulic path, and no additional power needs to be provided. The hydraulic path of the down-flow constructed wetland in the constructed wetland treatment unit is from top to bottom, and the hydraulic paths of the remaining treatment units are all from bottom to top. Therefore, the hydraulic path of the device fully utilizes the internal space of the device, avoids the occurrence of short flow, over flow and dead water area on the hydraulic path, and plays the efficiency of each treatment unit.

[0059] The integrated device form of the device is regular in shape, can be standardized in production, can be integrally transported and installed, and can be assembled on site. The civil construction is simple and only needs a stable cushion layer. The installation of the matching pipe network and equipment is simple and convenient.

[0060] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rural domestic sewage resource utilization device based on black and gray water quality collection, characterized in that: The pool body comprises a black water treatment unit, a grey water treatment unit, a comprehensive treatment unit, a clear water pool, the black water treatment unit and the grey water treatment unit are separately arranged on two sides of the comprehensive treatment unit, the black water treatment unit is connected with a black water inlet pipe, the grey water treatment unit is connected with a grey water inlet pipe, the comprehensive treatment unit comprises an adjusting pool unit and an artificial wetland unit, the water inlet end of the adjusting pool unit is connected with the water outlet ends of the black water treatment unit and the grey water treatment unit, the artificial wetland unit is communicated with the clear water pool, the clear water pool is provided with an external overflow pipe, the grey water treatment unit comprises an oil separation tank and a grey water anaerobic tank arranged in sequence, the grey water inlet pipe is communicated with the oil separation tank, the oil separation tank is communicated with the grey water anaerobic tank through a grey water overflow pipe, and the grey water anaerobic tank is communicated with the adjusting pool unit through an inverted L-shaped water passing pipe.

2. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 1, characterized in that: The black water treatment unit comprises a black water primary anaerobic tank, a black water secondary anaerobic tank and a black water temporary storage tank arranged in sequence, the black water inlet pipe is communicated with the black water primary anaerobic tank, and the black water temporary storage tank is communicated with the adjusting pool unit.

3. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 2, characterized in that: Inverted L-shaped manure passing pipes are arranged in the black water primary anaerobic tank, the black water secondary anaerobic tank and the black water temporary storage tank, the L-shaped manure passing pipe in the black water primary anaerobic tank is communicated with the black water secondary anaerobic tank, the L-shaped manure passing pipe in the black water secondary anaerobic tank is communicated with the black water temporary storage tank, and the L-shaped manure passing pipe in the black water temporary storage tank is communicated with the adjusting pool unit.

4. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 1, characterized in that: A plurality of oil intercepting plates and baffles are arranged in the middle of the oil separation tank, the baffle is arranged close to the rear lower part of the oil intercepting plate, the lower end of the baffle is connected with the tank bottom of the oil separation tank, and a filter frame is movably arranged between the oil intercepting plate and the tank wall on the water inlet side in the oil separation tank.

5. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 1, characterized in that: The left and right side walls of the adjusting pool unit are staggered with guide plates.

6. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 1, characterized in that: A baffle is arranged in the middle of the artificial wetland unit, the baffle divides the artificial wetland unit into a downward flow artificial wetland and an upward flow artificial wetland, the baffle is provided with a water passing pipe communicated with the downward flow artificial wetland and the upward flow artificial wetland at the lower part, the downward flow artificial wetland is communicated with the adjusting pool unit through a water distribution pipe, and the upward flow artificial wetland is communicated with the clear water pool through a water collecting pipe.

7. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 6, characterized in that: From bottom to top, a large particle size pebble layer, a small particle size pebble layer, a gravel layer and a planting soil layer are sequentially arranged in the artificial wetland unit, plants are planted on the planting soil layer, and the particle size of the gravel in the gravel layer is smaller than the particle size of the pebbles in the small particle size pebble layer.

8. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 6, characterized in that: The water distribution pipe comprises a water distribution main pipe communicated with the adjusting pool unit, a plurality of water distribution branch pipes are arranged on both sides of the water distribution main pipe at intervals, and water distribution holes are formed in the lower ends of the water distribution main pipe and the water distribution branch pipes.

9. The rural domestic sewage resource utilization device based on black and gray water quality collection according to claim 6, characterized in that: The water collecting pipe comprises a water collecting main pipe communicated with the clear water pool, a plurality of water collecting branch pipes are arranged on both sides of the water collecting main pipe at intervals, and water collecting holes are formed in the lower ends of the water collecting main pipe and the water collecting branch pipes.

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