A resource-circulating direct drinking water supply system

Abstract

The present invention discloses a resource-circulating direct drinking water supply system, including a direct drinking water treatment system and a wastewater recycling and cyclic utilization system. The direct drinking water treatment system is composed of a raw water tank, a sand rod filter, an activated carbon filter, a softener, a security filter, a molybdenum disulfide filter, a nanofiltration filter, an ultrasonic ultraviolet sterilizer, a clean water tank, an ozone disinfector, a water quality monitoring sensor, an electromagnetic flow valve, a direct drinking water supply pipe, a direct drinking water return pipe, and a return water quality monitoring sensor; the wastewater recycling and cyclic utilization system is composed of a wastewater recovery pipeline, a wastewater storage tank, an ozone disinfector, an ultrasonic ultraviolet sterilizer, a water quality monitoring sensor, a greening sprinkler water supply pipeline, a rainwater collection pipeline, a rainwater interception hanging basket device, a rainwater discarded flow filtration device, a rainwater filtration device, and a rainwater storage tank. The implementation of the present invention is of great significance to ensuring the healthy use of water for residents, reducing the energy consumption of direct drinking water treatment, and improving the comprehensive utilization rate of water resources.

Description

Technical Field

[0001] The present invention relates to the technical field of high-quality drinking water treatment, and in particular to a resource-circulating direct drinking water supply system. Background Art

[0002] Water is the source of life and the material foundation of human survival. Safe and hygienic drinking water is a fundamental need for a healthy life and has always been a key concern in the public health sector. With rising living standards, Chinese residents have a more urgent need for direct drinking water and higher water quality standards, which are no longer met by existing piped tap water. Consequently, some high-end residential communities and airports in my country have begun constructing small-scale direct drinking water treatment plants, using processes such as nanofiltration, ultrafiltration, and reverse osmosis. A survey of existing direct drinking water projects revealed that these processes often require high operating pressures, resulting in high overall energy consumption. Furthermore, during actual operation, direct drinking water treatment processes often maintain a water yield of 50%. Although existing direct drinking water treatment technologies such as nanofiltration, ultrafiltration, and reverse osmosis can achieve high water yields, the wastewater generated at these high yields does not meet direct discharge standards. Therefore, requiring secondary, advanced treatment of the wastewater would further increase the overall investment in the direct drinking water treatment process. Summary of the Invention

[0003] The purpose of the present invention is to provide a resource-circulating direct drinking water supply system, which introduces the emerging materials of molybdenum disulfide nanosheets and polyamide nano-thin layer composite membranes with low price and low filtration energy consumption, and conducts multi-stage filtration treatment of tap water through the raw water tank, sand rod filter, activated carbon filter, softener, security filter, molybdenum disulfide filter, nanofiltration filter, and clean water tank in sequence. When the water quality of the clean water tank reaches the direct drinking water standard, it is transported to the user side. The wastewater generated in the direct drinking water treatment process is disinfected and used for greening watering. If it cannot meet the water quality requirements for greening watering, it is transported to the rainwater collection system for further treatment and used for building toilet flushing. The present invention can not only ensure that the quality of direct drinking water meets the direct drinking water standard requirements, but also fully recycle wastewater resources, reduce energy consumption in the drinking water treatment process, and improve the comprehensive utilization rate of water resources.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The resource-circulating direct drinking water supply system of the present invention comprises a direct drinking water treatment system and a direct drinking water wastewater recycling and utilization system.

[0006] 1) The direct drinking water treatment system includes a raw water tank, a sand rod filter, an activated carbon filter, a softener, a security filter, a molybdenum disulfide filter, a nanofiltration filter, a clean water tank, a water pump, a valve A, a water quality monitoring sensor, a liquid level meter, a controller, and an electromagnetic flow valve.

[0007] The water in the raw water tank is municipal tap water, which is pumped sequentially through a sand rod filter, activated carbon filter, softener, and safety filter for pretreatment. This process removes turbidity, improves taste, softens water quality, and filters fine suspended matter. A level gauge is installed in the raw water tank to ensure the safe operation of subsequent filtration equipment.

[0008] The water treated by the security filter is then fed into a molybdenum disulfide filter for further filtration to remove pathogens and recalcitrant substances. The molybdenum disulfide filter comprises an upper cover, a lower base, a support frame, molybdenum disulfide nanosheets, a light tube, a solar photovoltaic panel, a solar energy storage device, a light tube power switch, an illumination sensor, an inlet pipe, an outlet pipe, and an illumination sensor. The upper cover is made of transparent glass, allowing sunlight to directly pass through and impinge on the molybdenum disulfide nanosheets, thereby causing the molybdenum disulfide to undergo a photocatalytic effect and degrade organic matter. The inlet pipe is located on the upper left side of the molybdenum disulfide filter, positioned above the molybdenum disulfide nanosheets; the outlet pipe is located on the lower right side of the molybdenum disulfide filter, positioned below the molybdenum disulfide nanosheets. The height difference between the inlet and outlet pipes allows the molybdenum disulfide to generate a piezoelectric reaction under the action of gravity flow, removing pathogens, recalcitrant substances, and heavy metal ions such as fluoride from the water. The solar photovoltaic panel is mounted on the lower base of the molybdenum disulfide filter. The solar photovoltaic panel generates electricity from sunlight and stores it in a solar energy storage device, which is primarily used to power the lamp. The illumination sensor is mounted on the upper cover of the molybdenum disulfide filter to protect it from rain.

[0009] The water treated by the molybdenum disulfide filter is then fed into a nanofiltration filter using a polyamide nano-thin composite membrane. This membrane boasts approximately 2-10 times higher water permeability than traditional nanofiltration membranes and can operate at low pressures. An ultrasonic ultraviolet sterilizer is also installed within the nanofiltration filter to provide thorough sterilization and prevent membrane contamination.

[0010] The water treated by the nanofiltration filter is input into the clean water tank, in which an ozone sterilizer and an ultrasonic sterilizer are arranged to ensure that the water quality meets the standards.

[0011] 2) The direct drinking water wastewater recycling and reuse system includes a direct drinking water wastewater recovery pipeline, a direct drinking water wastewater storage tank, an ozone disinfector, an ultrasonic ultraviolet sterilizer, a water pump, valve A, an electromagnetic flow valve, a water quality monitoring sensor, a greening irrigation water supply pipeline, a rainwater interception basket device, a rainwater wastewater filter device, a rainwater filtration device, and a rainwater storage tank. The water recovered by the direct drinking water wastewater recovery pipeline includes wastewater discharged from the sand rod filter, activated carbon filter, softener, safety filter, molybdenum disulfide filter, and nanofiltration filter. The direct drinking water wastewater is disinfected by an ozone sterilizer and an ultrasonic ultraviolet sterilizer in the direct drinking water wastewater storage tank. When the effluent water quality meets the greening water quality standard, it is used for greening watering in the community. When it fails to meet the standard, it directly enters the rainwater storage tank for further treatment. When the effluent water quality of the rainwater storage tank meets the water quality indicators in the "Urban Wastewater Recycling and Urban Miscellaneous Water Quality" (GB / T18920-2002), it is used for building toilet flushing; otherwise, it is discharged into the urban drainage pipe.

[0012] 3) The direct drinking water treatment system and the direct drinking water wastewater recycling and reuse system are provided with a controller, which is used to receive information from each of the water pumps, valve A, electromagnetic flow valve, water quality monitoring sensor, and illumination sensor, and control the opening / closing of the corresponding electromagnetic flow valve according to the water quality value tested by each water quality monitoring sensor; control the opening / closing of the lamp power switch according to the illumination value tested by the illumination sensor; and control the opening / closing of valve A according to the water level value tested by the liquid level meter. The control end of each water pump is connected to the controller for transmitting real-time measured water pump operation information to the controller; the control end of each electromagnetic flow valve is connected to the controller for transmitting real-time measured flow information to the controller; each water quality monitoring sensor is connected to the controller for transmitting real-time measured water quality monitoring values ​​to the controller; and the signal output end of the illumination sensor is connected to the controller for transmitting real-time measured outdoor illumination values ​​to the controller. The installation positions of each water quality monitoring sensor are respectively set on the raw water tank outlet pipe, the safety filter outlet pipe, the molybdenum disulfide filter outlet pipe, the nanofiltration filter outlet pipe, the direct drinking water supply pipe, the direct drinking water return pipe, the direct drinking water wastewater storage tank outlet pipe, and the rainwater storage tank outlet pipe.

[0013] The beneficial effects of the present invention are as follows: Direct drinking water is closely related to people's health and is often required to be free of heavy metal ions and sterile. To achieve this goal, traditional direct drinking water treatment processes often use treatment technologies such as nanofiltration, ultrafiltration, and reverse osmosis. Since they all require high pressure conditions to achieve filtration to remove pathogens, heavy metal ions, etc., the overall system operation energy consumption is high. In addition, the traditional direct drinking water treatment system discharges wastewater directly into the sewage pipe, often maintaining a water production rate of 50%, resulting in low efficiency of existing water treatment technology and a large amount of water resources wasted. Therefore, the present invention introduces a low-cost molybdenum disulfide filter material that can use solar energy and microgravity to sterilize and degrade organic matter, as well as a polyamide nano-thin layer composite membrane with low-pressure and high-permeability functions for direct drinking water treatment. The wastewater after direct drinking water treatment is disinfected and used for greening watering, or enters the rainwater collection system for further treatment and then used for building toilet flushing. The implementation of the present invention is of great significance to ensuring healthy water use for residents, reducing energy consumption for direct drinking water treatment, and improving the comprehensive utilization rate of water resources.

[0014] Other features and advantages of the present invention will be described in the following description; and in part, they will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained by reading the description, claims, and the structures particularly pointed out in the drawings.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a component connection diagram of the resource circulation type direct drinking water supply system described in an embodiment of the present invention.

[0018] Figure 2 It is a connection diagram of the controller described in the present invention.

[0019] Figure 3 Schematic diagram of the molybdenum disulfide filter of the present invention.

[0020] Figure 4 It is a workflow diagram of the present invention.

[0021] In the figure: 1-Municipal tap water pipeline; 2-Valve A; 3-Level gauge; 4-Raw water tank; 5-Water quality monitoring sensor; 6-Water pump; 7-Sand rod filter; 8-Activated carbon filter; 9-Softener; 10-Security filter; 11-Molybdenum disulfide filter; 12-Nanofiltration filter; 13-Polyamide nano-thin layer composite membrane; 14-Ultrasonic ultraviolet sterilizer; 15-Water purification tank; 16-Ozone disinfector; 17-Direct drinking water supply water quality monitoring sensor; 18-First electromagnetic flow valve; 19-Second electromagnetic flow valve; 20-Direct drinking water supply pipe; 21-Direct drinking water return pipe; 22-Direct drinking water return water quality monitoring sensor; 23-Third electromagnetic flow valve; 24-Fourth electromagnetic flow valve; 25-Direct drinking water wastewater recovery pipe; 26-Community greening water supply water quality monitoring sensor; 27-Direct drinking water wastewater storage tank; 28-Fifth electromagnetic flow valve Flow valve; 29-sixth electromagnetic flow valve; 30-greening sprinkler water supply pipeline; 31-rainwater collection pipeline; 32-rainwater sewage interception hanging basket device; 33-rainwater discard flow filtration device; 34-rainwater filtration device; 35-rainwater storage tank; 36-building flushing water supply water quality monitoring sensor; 37-seventh electromagnetic flow valve; 38-eighth electromagnetic flow valve; 39-rainwater supply pipeline; 40-urban sewage discharge pipeline; 41-0 controller; 42-0 solar photovoltaic panel; 43-lamp; 44-molybdenum disulfide nanosheet; 45-lamp power switch; 46-electrical wire; 47-solar energy storage device; 48-support frame; 49-water inlet pipe; 50-water outlet pipe; 51-illuminance sensor; 52-upper cover; 53-lower base; 54-direct drinking water treatment system; 55-direct drinking water wastewater recycling and utilization system; 56-ninth electromagnetic flow valve. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0023] The purpose of the present invention is to provide a resource-recycling direct drinking water supply system that achieves efficient and low-cost treatment of direct drinking water and recycles wastewater generated by direct drinking water, thereby significantly reducing water resource waste. To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying diagrams and specific implementation methods.

[0024] See also Figure 1-4 The resource-circulating direct drinking water treatment system of the present invention includes: a direct drinking water treatment system 54 and a direct drinking water wastewater recycling and utilization system 55.

[0025] The direct drinking water treatment system 54 includes a valve A2, a liquid level meter 3, a raw water tank 4, a water quality monitoring sensor 5, a water pump 6, a sand rod filter 7, an activated carbon filter 8, a softener 9, a security filter 10, a molybdenum disulfide filter 11, a nanofiltration filter 12, an ultrasonic ultraviolet sterilizer 14, a clean water tank 15, an ozone disinfector 16, a direct drinking water supply quality monitoring sensor 17, a first electromagnetic flow valve 18, a second electromagnetic flow valve 19, a direct drinking water supply pipe 20, a direct drinking water return pipe 21, a direct drinking water return water quality monitoring sensor 22, a third electromagnetic flow valve 23 and a fourth electromagnetic flow valve 24.

[0026] The direct drinking water treatment system 54 processes the tap water in the municipal tap water pipe 1 in sequence through the raw water tank 4, sand rod filter 7, activated carbon filter 8, softener 9, safety filter 10, molybdenum disulfide filter 11, nanofiltration filter 12, and clean water tank 15, and then sends it to the direct drinking water supply pipe 20 after being monitored as qualified by the direct drinking water supply water quality monitoring sensor 17.

[0027] The raw water tank 4 is used to store a certain volume of water to ensure the safety and normal operation of subsequent filters. A liquid level gauge 3 is installed in the raw water tank 4 to measure the water volume. When the water level measured by the liquid level gauge 3 falls below 1 / 4 of the height of the raw water tank 4, the ninth electromagnetic flow valve 56 closes, sounding an alarm. The sand rod filter 7 removes large particles of impurities from the water and reduces the turbidity of the raw water. The activated carbon filter 8 primarily adsorbs organic matter, residual chlorine, and other substances in the water to improve the taste. The softener 9 reduces water hardness. The security filter 10 intercepts fine suspended solids larger than 5 μm. The molybdenum disulfide filter 11 removes pathogens, refractory substances, and heavy metal ions such as fluoride from the water through the solar piezoelectric photocatalytic microfield effect of the molybdenum disulfide material. The nanofiltration filter 12 removes disinfection byproducts, heavy metal ions, and organic matter from the water, retaining trace elements beneficial to the human body. The purified water tank 15 stores treated drinking water.

[0028] See attached Figure 3 、 Figure 4The molybdenum disulfide filter 11 includes an upper cover plate 52, a lower base plate 53, a support frame 48, molybdenum disulfide nanosheets 44, a lamp 43, a solar photovoltaic panel 42, a solar energy storage device 47, a lamp power switch 45, an illumination sensor 51, a water inlet pipe 49, a water outlet pipe 50, and an illumination sensor 51. The upper cover plate 52 is made of transparent glass. Sunlight passes through the upper cover plate 52 and irradiates the molybdenum disulfide nanosheets 44. The molybdenum disulfide nanosheets 44 absorb sunlight with a wavelength of 690 nm to 1030 nm, thereby promoting a solar photocatalytic effect on the molybdenum disulfide nanosheets 44 to degrade organic matter. The water inlet pipe 49 is arranged on the upper left side of the molybdenum disulfide filter 11, and is positioned higher than the molybdenum disulfide nanosheets 44. The water outlet pipe 50 is arranged on the lower right side of the molybdenum disulfide filter 11, and is positioned lower than the molybdenum disulfide nanosheets 44. The height difference between the water inlet pipe 49 and the water outlet pipe 50 can cause the molybdenum disulfide nanosheets 44 to produce a piezoelectric reaction under the action of gravity flow to remove pathogens, difficult-to-degrade substances, and heavy metal ions such as fluoride in the water. The solar photovoltaic panel 42 is arranged on the lower base plate 53 of the molybdenum disulfide filter 11. The solar photovoltaic panel 42 can absorb sunlight with a wavelength of 320nm to 1100nm, and store the electricity generated by sunlight irradiating the solar photovoltaic panel 42 in the solar power storage device 47. Figure 3 The solar energy storage device 47 is used to power the lamp 43. When the illuminance sensor 51 measures greater than 500 lux, the lamp power switch is turned off. When the illuminance sensor 51 measures less than 500 lux, the lamp power switch 45 is turned on. The illuminance sensor 51 is mounted on the upper cover 52 of the molybdenum disulfide filter 11 to protect it from rain.

[0029] The filtration material used in the nanofiltration filter 12 is a polyamide nano-thin composite membrane 13. This membrane improves water permeability by approximately 2 to 10 times compared to conventional nanofiltration membranes and can operate at low pressures. An ultrasonic ultraviolet sterilizer 14 is also included in the nanofiltration filter 12 to reduce membrane contamination of the polyamide nano-thin composite membrane 13.

[0030] See attached Figure 1 、 Figure 3 The clean water tank 15 is equipped with an ozone sterilizer 16 and an ultrasonic sterilizer 14 to ensure that the water quality meets the standards. When the water quality of the clean water tank 15 meets the "Technical Specification for Piped Direct Drinking Water Systems in Buildings and Residential Areas" (CJJ-T000-2017), the first electromagnetic flow valve 18 opens and the water is pumped to the direct drinking water supply pipe 20 via the water pump 6. If the water quality does not meet the "Technical Specification for Piped Direct Drinking Water Systems in Buildings and Residential Areas" (CJJ-T000-2017), the second electromagnetic flow valve 19 opens and the water is re-transported to the inlet pipe 49 of the molybdenum disulfide filter 11 for further treatment.

[0031] The direct drinking water wastewater recycling and reuse system 55 includes a direct drinking water wastewater recycling pipeline 25, a direct drinking water wastewater storage tank 27, an ozone disinfector 16, an ultrasonic ultraviolet sterilizer 14, a water pump 6, a valve A2, a water quality monitoring sensor 5, a greening water supply pipeline 30, a rainwater collection pipeline 31, a rainwater interception basket device 32, a rainwater wastewater filter device 33, a rainwater filter device 34, and a rainwater storage tank 35. The water recycled by the direct drinking water wastewater recycling pipeline 25 includes wastewater discharged from the sand rod filter 7, the activated carbon filter 8, the softener 9, the security filter 10, the molybdenum disulfide filter 11, and the nanofiltration filter 12. The direct drinking water wastewater is disinfected in the direct drinking water wastewater storage tank 27 via an ozone disinfector 16 and an ultrasonic ultraviolet sterilizer 14. If the water quality meets the water quality standards for landscaping as specified in the "Water Quality Standards for Urban Wastewater Reuse and Urban Miscellaneous Water" (GB / T18920-2002), it is used for community landscaping. If it fails to meet the standards, it enters the rainwater storage tank 35 for further treatment. If the effluent from the rainwater storage tank 35 meets the water quality standards for toilet flushing as specified in the "Water Quality Standards for Urban Wastewater Reuse and Urban Miscellaneous Water" (GB / T18920-2002), it is used for flushing toilets in the community buildings; otherwise, it is discharged into the urban sewage discharge pipeline 40. The direct drinking water wastewater storage tank 27 is equipped with an ozone disinfector 16 and an ultrasonic ultraviolet sterilizer 14 for sterilization.

[0032] Water quality monitoring sensors 5 are installed in key processing steps of the direct drinking water treatment system 54 and the direct drinking water wastewater recycling and reuse system 55 for dynamic online monitoring of water quality and system operation adjustment. These sensors 5 are installed on the outlet pipe of the raw water tank 4, the outlet pipe of the safety filter 10, the outlet pipe of the molybdenum disulfide filter 11, the outlet pipe of the nanofiltration filter 12, the direct drinking water supply pipe 20, the direct drinking water return pipe 21, the outlet pipe of the direct drinking water wastewater storage tank 27, and the rainwater storage tank 35.

[0033] See also Figure 2 、 Figure 4, a controller 41 is provided in the direct drinking water treatment system 54 and the direct drinking water wastewater recycling and utilization system 55. The controller 41 is used to receive information from the water pump 6, the valve A2, the liquid level meter 3, the electromagnetic flow valves 18, 19, 23, 24, 28, 29, 38, 56, the direct drinking water supply water quality monitoring sensor 17, the direct drinking water return water quality monitoring sensor 22, the community greening water supply water quality monitoring sensor 26, the building flushing toilet water quality monitoring sensor 36, and the illumination sensor 51, and control the opening / closing of the first electromagnetic flow valve 18 and the second electromagnetic flow valve 19 according to the water quality value tested by the direct drinking water supply water quality monitoring sensor 17; according to the water quality value tested by the direct drinking water return water quality monitoring sensor 22 The opening / closing of the third electromagnetic flow valve 23 and the fourth electromagnetic flow valve 24 is controlled according to the water quality value tested; the opening / closing of the fifth electromagnetic flow valve 28 and the sixth electromagnetic flow valve 29 is controlled according to the water quality value tested by the community greening water supply water quality monitoring sensor 26; and the opening / closing of the seventh electromagnetic flow valve 37 and the eighth electromagnetic flow valve 38 is controlled according to the water quality value tested by the building flushing water supply water quality monitoring sensor 36; the opening / closing of the lamp power switch 45 is controlled according to the illumination value tested by the illumination sensor 51; and the opening / closing of the valve A2 is controlled according to the water level value tested by the liquid level meter 3. The water pump 6 is connected to the controller 41 for transmitting real-time measured water pump 6 operation information to the controller 41. The control terminals of the electromagnetic flow valves 18, 19, 23, 24, 28, 29, 38, and 56 are respectively connected to the controller 41 for transmitting real-time measured flow information to the controller 41. The signal output terminal of the water quality monitoring sensor 5 is connected to the controller 41 for transmitting real-time measured water quality monitoring values ​​to the controller 41. The signal output terminal of the illumination sensor 51 is connected to the controller 41 for transmitting real-time measured outdoor illumination values ​​to the controller 41. The signal output terminal of the liquid level meter 3 is connected to the controller 41 for transmitting real-time measured liquid level values ​​to the controller 41. The controller 41 includes an Arduino MEGA2560 core circuit board.

[0034] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A resource-circulating direct drinking water supply system, comprising a direct drinking water treatment system and a direct drinking water wastewater recycling and utilization system; characterized in that: The direct drinking water treatment system includes a raw water tank provided with a liquid level meter, the water inlet of the raw water tank is connected to the municipal tap water pipeline, a valve A is provided between the municipal tap water pipeline and the raw water tank, the water outlet of the raw water tank is connected in sequence to a sand rod filter, an activated carbon filter, a softener, a security filter, a molybdenum disulfide filter, a nanofiltration filter provided with a polyamide nano-thin layer composite membrane and an ultrasonic ultraviolet sterilizer, and a clean water tank; the clean water tank is provided with an ozone disinfector and an ultrasonic ultraviolet sterilizer, the water outlet of the clean water tank is provided with a direct drinking water supply water quality monitoring sensor, which is connected to the direct drinking water supply pipe via a first electromagnetic flow valve, and is connected to the direct drinking water return pipe via a second electromagnetic flow valve; the direct drinking water return pipe is connected to the water inlet pipe of the molybdenum disulfide filter via a fourth electromagnetic flow valve; The direct drinking water wastewater recycling and reuse system consists of a direct drinking water wastewater recycling pipeline, a direct drinking water wastewater storage tank, an ozone disinfector, an ultrasonic ultraviolet sterilizer, a water pump, a valve A, an electromagnetic flow valve, a water quality monitoring sensor, a greening sprinkler water supply pipeline, a rainwater collection pipeline, a rainwater interception hanging basket device, a rainwater discard flow filtering device, a rainwater filtering device and a rainwater storage tank; wherein the direct drinking water wastewater recycling pipeline is connected to the direct drinking water treatment system and the direct drinking water wastewater storage tank, the direct drinking water wastewater storage tank is equipped with an ozone disinfector and an ultrasonic ultraviolet sterilizer, the rainwater collection pipeline, the rainwater interception hanging basket device, the rainwater discard flow filtering device, the rainwater filtering device and the rainwater storage tank The water pools are connected in sequence, and the wastewater in the direct drinking water wastewater storage tank is disinfected by the ozone disinfector and the ultrasonic ultraviolet sterilizer therein. After the water quality is detected by the community greening water supply quality monitoring sensor to meet the industry-specified water quality standards for greening sprinklers, it is transported to the greening sprinkler water supply pipeline through the fifth electromagnetic flow valve. Otherwise, it is input into the rainwater storage tank through the sixth electromagnetic flow valve for further treatment; when the water quality of the effluent from the rainwater storage tank is detected by the building flushing toilet water supply quality monitoring sensor to meet the industry-specified water quality standards for flushing toilets, it is transported to the building flushing toilet pipeline through the seventh electromagnetic flow valve, otherwise it is transported to the urban sewage discharge pipeline through the eighth electromagnetic flow valve; The molybdenum disulfide filter comprises an upper cover, a lower base, a support frame, molybdenum disulfide nanosheets, a lamp, a solar photovoltaic panel, a solar energy storage device, a lamp power switch, an illumination sensor, a water inlet pipe, and a water outlet pipe; the upper cover is made of transparent glass, and sunlight passes through the upper cover to irradiate the molybdenum disulfide nanosheets, thereby causing the molybdenum disulfide nanosheets to produce a solar photocatalytic effect; the water inlet pipe is arranged on the upper left side of the molybdenum disulfide filter, at a position higher than the molybdenum disulfide nanosheets, and the water outlet pipe is arranged on the lower right side of the molybdenum disulfide filter, at a position lower than the molybdenum disulfide nanosheets; the solar photovoltaic panel is arranged on the lower base of the molybdenum disulfide filter, and the electrical energy generated by sunlight irradiating the solar photovoltaic panel is stored in the solar energy storage device.

2. The resource-circulating direct drinking water supply system according to claim 1 is characterized in that: The direct drinking water treatment system processes the tap water in the municipal tap water pipe through the raw water tank, sand rod filter, activated carbon filter, softener, security filter, molybdenum disulfide filter, nanofiltration filter, and clean water tank in sequence, and then monitors it through the direct drinking water supply water quality monitoring sensor. After the water quality reaches the direct drinking water standard, it is sent to the direct drinking water supply pipe.

3. The resource circulation type direct drinking water supply system according to claim 1 is characterized in that: The direct drinking water treatment system and the direct drinking water wastewater recycling and utilization system are provided with a controller, which controls the opening / closing of the corresponding electromagnetic flow valve according to the water quality values ​​tested by each water quality monitoring sensor; controls the opening / closing of the lamp power switch according to the illumination value tested by the illumination sensor; and controls the opening / closing of valve A according to the water level value tested by the liquid level meter.

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