CN111877454B

CN111877454B - Indoor reclaimed water recycling device for public building

Info

Publication number: CN111877454B
Application number: CN202010813348.8A
Authority: CN
Inventors: 刘永旺; 赵锂; 卢兴超; 赵昕; 李建业; 张方斋
Original assignee: China Architecture Design and Research Group Co Ltd
Current assignee: China Architecture Design and Research Group Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-09-28
Anticipated expiration: 2040-08-13
Also published as: CN111877454A

Abstract

The invention relates to an indoor reclaimed water recycling device for a public building, belongs to the field of urban water conservation, solves the problems that the indoor water of the public building cannot be recycled in a stepped manner and cannot be automatically controlled to stably operate, and meets the stable operation functions of collecting, treating and recycling the indoor grey water of the public building. The indoor reclaimed water reuse device for the public building comprises a grey water storage tank, a grey water treatment component and a reclaimed water pneumatic water tank component which are sequentially arranged from top to bottom; the ash water storage box is used for storing the ash water of the previous floor collected by the ash water collecting device; the grey water treatment component is used for carrying out multi-stage purification treatment on the grey water in the grey water storage tank; the reclaimed water air pressure water tank assembly is used for disinfecting reclaimed water subjected to multi-stage purification treatment and supplying water to a toilet flushing water point in a constant pressure mode. The invention realizes the collection, treatment and recycling of the indoor grey water of the public building, can use the indoor grey water to replace tap water for flushing a toilet, greatly reduces the water consumption of the tap water of the public building and improves the water-saving efficiency of the city.

Description

Indoor reclaimed water recycling device for public building

Technical Field

The invention relates to the technical field of urban water conservation, in particular to an indoor reclaimed water recycling device for a public building.

Background

In recent years, with the rapid development of urban economy, the demand of common people for social services is increased, and the proportion of public buildings in urban buildings is gradually increased, so that the proportion of public building water in the total urban water consumption is continuously increased. Under the general background of urban high-efficiency water saving, urban public building water saving becomes important work for urban water saving, water use efficiency is improved, and deep excavation of non-traditional water resources is an important way for solving the problem of water shortage. In the domestic and foreign green building standards, corresponding research on water use efficiency, sustainable management and rainwater utilization is carried out and specific requirements are put forward. Recent researches show that the sewage treatment and recycling are relatively more important and sustainable water resources, and the water resources are not fully developed and utilized, so the sewage treatment and recycling become the most stable water supply source.

The existing reclaimed water recycling treatment technology is roughly divided into three types, namely coagulation and filtration, biological treatment and precipitation and membrane separation, wherein the first two types of technologies have large occupied area and long treatment time consumption, and the third type of technology has small occupied area and quick and simple process, is more and more practical in actual life and is also favored by people. A large amount of high-quality miscellaneous drainage (such as a hand basin, a washing sink, a shower room and the like) is discharged in daily life of public buildings (such as schools, hotels, office buildings and the like), the treatment cost is low, and the technical requirement is also low. The high-quality impurity drainage is collected, filtered, precipitated, purified and disinfected to form reclaimed water, and the reclaimed water is sent to a water consumption point (mainly used for flushing a toilet) so as to reduce the use amount of the traditional tap water.

At present, the existing indoor grey water recycling technology in the market is a modular indoor reclaimed water technology suitable for residences, and is mainly used for collecting domestic miscellaneous water of a floor by reducing the height of the floor and flushing toilets by using a toilet after filtering and disinfection. The water consumption proportion of the residential buildings is respectively as follows: the technology mainly depends on high-quality miscellaneous drainage of residential laundry, bath and toilet, the grey water quantity is abundant, the reuse requirement of residential toilet flushing can be completely met, tap water is not needed for water supplement, meanwhile, the treated water is directly reused in a toilet water tank, and the pressure control precision of the recycled water is not high.

However, this technique is not suitable for public buildings. Taking an office building and a teaching building with the highest proportion in public buildings as an example, the proportion of water used in the public buildings is 60% -66% for toilet flushing and 40-34% for washing respectively. On one hand, the water source supplementing and controlling method needs to be integrally designed by collecting high-quality miscellaneous drainage represented by washing water, which cannot meet the requirement of all toilet flushing water; on the other hand, the toilet bowl and the urinal of the public building basically eliminate the water tank type flushing, and the water facilities are directly connected with the water supply pipeline, so that the water quantity and the water pressure requirements of flushing the toilet are met.

Therefore, it is urgently needed to provide an indoor reclaimed water recycling device suitable for public buildings, which can effectively meet the requirements of grey water replenishing, constant-pressure water supply and water quality guarantee and can realize automatic control and stable operation.

Disclosure of Invention

In view of the above analysis, the present invention aims to provide a device for recycling indoor reclaimed water of a public building, which solves the problems that the indoor water of the public building cannot be recycled in a cascade manner and cannot be automatically controlled to stably operate, and meets the requirements of stable operation functions of collecting, treating and recycling indoor grey water of the public building.

The purpose of the invention is mainly realized by the following technical scheme:

on the one hand, the indoor reclaimed water recycling device for the public building comprises a grey water storage tank, a grey water treatment assembly and a reclaimed water pneumatic water tank assembly which are sequentially arranged from top to bottom;

the ash water storage box is used for storing the ash water of the previous floor collected by the ash water collecting device;

the grey water treatment component is used for carrying out multi-stage purification treatment on the grey water in the grey water storage tank;

the reclaimed water air pressure water tank assembly is used for disinfecting reclaimed water subjected to multi-stage purification treatment and supplying water to the toilet flushing water point in a constant pressure mode.

Furthermore, the inlet of the grey water storage tank is connected with a high-quality miscellaneous drainage water-using appliance on the upper floor through a grey water collecting pipeline;

the grey water collecting pipeline is provided with a hair filter which is used for pre-filtering the grey water before entering the grey water storage tank.

Furthermore, an overflow discharge port at the upper part of the grey water storage tank is connected with the vertical sewage pipe through an overflow pipe, and a sewage discharge port at the bottom of the grey water storage tank is connected with the vertical sewage pipe through an emptying pipe.

Furthermore, the emptying pipe is provided with an emptying manual valve, and sediment at the bottom of the grey water collecting tank is discharged through the emptying pipe under the action of gravity by controlling the emptying manual valve.

Furthermore, the grey water storage tank is connected with the water supply vertical pipe through a tap water replenishing pipe, and the tap water replenishing pipe is provided with an automatic water replenishing valve and/or a manual water replenishing valve.

Furthermore, the water outlet of the grey water storage tank is connected with the water inlet of the grey water treatment assembly through a first drainage pipe;

the first water draining pipe is provided with a control valve which is used for controlling the water draining pipe of the grey water storage tank connected with the grey water treatment component and metering the quantity of the grey water fed into the grey water treatment component.

Furthermore, the grey water treatment assembly is connected with the reclaimed water pneumatic water tank assembly through a second drain pipe;

and a check valve is arranged on the second drain pipe and is used for preventing reclaimed water of the reclaimed water pneumatic water tank assembly from being poured into the grey water treatment assembly.

Furthermore, the bottom surface of the grey water storage tank is a slope surface, and the emptying pipe is arranged along the slope direction of the slope surface.

Furthermore, a liquid level sensor is arranged inside the grey water storage tank and used for monitoring the water level state in the grey water storage tank;

the water level state is an alarm liquid level, a low liquid level, a high liquid level and an overflow liquid level from low to high in sequence, the low liquid level is a starting water supplementing liquid level, and the high liquid level is a stopping water supplementing liquid level.

Further, the lower edge of the tap water replenishing port is 150mm higher than the overflow liquid level.

Further, the grey water treatment assembly includes a multi-stage purification assembly.

Further, the multistage purification assembly is a first-stage purification assembly, a second-stage purification assembly and a third-stage purification assembly which are sequentially connected.

Furthermore, the first-stage purification component adopts PP cotton/coarse strainer for filtering large particles, non-dissolved metal oxides and broken hair in the grey water;

the second-stage purification component adopts a modified granular activated carbon column and is used for filtering small-grain-size particles, organic pollutants, colorimetric substances and heavy metal ions in the grey water;

the third-stage purification component adopts an internal pressure type ultrafiltration membrane and is used for intercepting turbidity substances, macromolecular organic matters, bacteria and partial viruses.

Furthermore, the first-stage purification component, the second-stage purification component and the third-stage purification component are all cylindrical structures;

the first-stage purification assembly, the second-stage purification assembly and the third-stage purification assembly are connected through pipelines, and the joints are connected through threads.

Furthermore, the built-in capacities of the first-stage purification assembly, the second-stage purification assembly and the third-stage purification assembly are arranged in a different mode, and under the condition that all levels of purification assemblies are completely consumed, reclaimed water with the same capacity can be treated.

Further, the built-in capacity ratio of the first-stage purification assembly, the second-stage purification assembly and the third-stage purification assembly is 2:2: 1.

Furthermore, the grey water treatment component also comprises a variable frequency pump, an ultrafiltration membrane backwashing pipe and a backwashing electromagnetic valve;

the variable frequency pump is used for pressurizing the grey water collected in the grey water storage tank and then feeding the grey water into the first-stage purification assembly;

the ultrafiltration membrane backwashing pipe is used for discharging impurities after backwashing of the ultrafiltration membrane and discharging the liquid after backwashing to the sewage vertical pipe;

the back-washing electromagnetic valve is used for controlling the back-washing process of the ultrafiltration membrane.

Furthermore, the medium-water pneumatic water tank assembly comprises a pneumatic water tank, a pressure gauge, a dosing tank, a metering pump and a medium-water supply pipe;

the pressure gauge is connected with the air pressure water tank, the dosing tank is connected with the air pressure tank through the metering pump, and the water vapor pressure water tank is connected with the water using facilities on the same floor through the reclaimed water supply pipe.

Further, the internal pressure of the air pressure tank is 0.15-0.20 MPa.

Furthermore, the reclaimed water pneumatic water tank assembly also comprises an ultraviolet sterilizer which is arranged inside the pneumatic water tank or at a reclaimed water outlet of the pneumatic water tank.

Furthermore, a reclaimed water outlet of the reclaimed water pneumatic water tank assembly is connected with the grey water storage tank through a reclaimed water circulating pipeline, and a circulating switch is arranged on the reclaimed water circulating pipeline and can be automatically controlled.

On the other hand, the system for recycling the indoor reclaimed water of the public building comprises an ash water collecting device, a tap water replenishing device, a reclaimed water recycling control system and the reclaimed water purifying and recycling device;

the grey water collecting device is used for collecting grey water generated by the previous floor, the reclaimed water purifying and recycling device is used for purifying and disinfecting the grey water, the tap water replenishing device is used for replenishing water to the reclaimed water purifying and recycling device, and the reclaimed water recycling control system is used for integrally controlling an indoor reclaimed water recycling system of a public building.

Further, the grey water collecting device is connected with a grey water inlet of the reclaimed water purifying and recycling device through a grey water feeding pipe;

a tap water replenishing port of the reclaimed water purifying and recycling device is connected with a tap water replenishing device through a tap water replenishing pipe;

the reclaimed water outlet of the reclaimed water purifying and recycling device is connected with the reclaimed water recycling facility on the layer.

Furthermore, the reclaimed water purifying and recycling device is of a box-type structure and is placed at the side wall of the toilet.

Furthermore, the reclaimed water purification and reuse device is installed in a floor mode, and the box-type structure is detachably connected with the wall body.

Furthermore, the reclaimed water reuse control system comprises a raw water tank liquid level control assembly, a tap water replenishing control assembly, a reclaimed water circulating and purifying control assembly, a disinfection control assembly and a display and alarm assembly.

Furthermore, the original water tank liquid level control assembly comprises a water level controller, and the water level controller controls the tap water replenishing control assembly according to the received liquid level information to realize the control of the liquid level height in the grey water storage tank.

Furthermore, the tap water replenishing control assembly comprises a water replenishing controller, an automatic water replenishing valve and a manual water replenishing valve, and the water replenishing controller is used for controlling the automatic water replenishing valve to be opened and closed.

Furthermore, the reclaimed water circulation purification control assembly comprises a circulation switch which is arranged on a reclaimed water circulation pipeline, and because the reclaimed water in the air pressure water tank has certain pressure, the water to be circularly purified in the air pressure water tank can be discharged into the grey water storage tank along the circulation pipeline by controlling the opening of the circulation switch, and the cyclic purification treatment is carried out along with the new water production process.

Furthermore, the disinfection control assembly comprises a disinfection controller, the disinfection controller quantitatively adds disinfectant into the air pressure water tank by controlling the metering pump according to the water yield of the variable frequency pump, and the disinfectant is added in equal proportion by combining the water yield, so that the disinfection of reclaimed water is realized.

Furthermore, the display and alarm assembly comprises a display screen and an alarm, the display screen is used for displaying liquid level, disinfectant and purification assembly filtration volume, and the alarm is used for giving an alarm on water shortage of the grey water storage tank, giving an alarm on insufficient disinfectant and giving an alarm on maintenance of consumable materials of the purification assembly. The alarm mode of the alarm comprises sound and color alarm, the sound alarm is a sound alarm of which the sound is not less than 80 decibels, the color alarm is that the background color of a display screen is displayed in red, and the alarm can be eliminated through screen operation after the alarm fault is processed.

Compared with the prior art, the indoor reclaimed water recycling device for the public building has at least one of the following beneficial effects:

a) by arranging the staggered floor drainage system, high-quality miscellaneous drainage of the previous floor is collected and is used for flushing a toilet (a toilet bowl and/or a urinal) of the floor after purification and disinfection, so that the aim of distributed staggered floor drainage is fulfilled, and the problem of difficulty in collecting domestic miscellaneous water of public buildings is solved.

b) The reclaimed water purifying and recycling device is integrally of a box-type structure and is vertically arranged, the gray water storage tank, the gray water treatment assembly and the reclaimed water air pressure water tank assembly are sequentially arranged from top to bottom, the gravitational potential energy of a water body can be better utilized, the operation energy consumption of the reclaimed water purifying and recycling device is reduced, the structure is compact, the space layout inside a toilet of a large public building is combined, the occupied space for centralized treatment of the miscellaneous water is greatly reduced, the installation of the reclaimed water recycling device is more flexible and convenient, and the potential safety hazard of misconnection and mixed connection of a water supply vertical pipe and a reclaimed water pipe is avoided.

c) The water use proportion of the public building is 34-40% of the toilet water and 60-66% of the toilet flushing water, so that all the washing water (high-quality miscellaneous drainage) can be collected and recycled, the tap water consumption in the toilet flushing water is greatly reduced, and the system water saving of the public building is realized. Except for the top layer, the system can save water by 34-40 percent, and has important value and significance for reducing the water resource consumption of public buildings and improving the utilization efficiency of non-traditional water resources.

d) The collected grey water is subjected to multi-stage purification treatment through the reclaimed water purification and recycling device, large particles, small particles and fine microorganisms in the reclaimed water can be intercepted and purified, the high-standard effluent requirement is met through dosing disinfection and ultraviolet disinfection, and the safety of reclaimed water recycling is guaranteed.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a schematic view of a reclaimed water recycling process of an indoor reclaimed water recycling system of a public building in an embodiment of the invention;

FIG. 2 is a schematic structural diagram of an indoor reclaimed water recycling system of a public building in an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a water purification and recycling device in an embodiment of the invention;

FIG. 4 is a control flow chart of the method for recycling indoor reclaimed water of a public building in the embodiment of the invention.

Reference numerals:

1. a grey water storage tank; 1-1, a grey water supply pipe; 1-2, a hair filter; 1-3, overflow pipe; 1-4, emptying the pipe; 1-5, emptying the manual valve; 1-6, a control valve; 1-7, an automatic water replenishing valve; 1-8, a manual water replenishing valve; 1-9 parts of a tap water replenishing pipe; 1-10, a liquid level sensor; 1-11, stopping water supplementing liquid level; 1-12, starting a water replenishing liquid level; 2. a grey water treatment assembly; 2-1, variable frequency pump; 2-2, a first-stage purification component; 2-3, a second-stage purification component; 2-4, a third-stage purification component; 2-5, check valve; 2-6, back flushing an electromagnetic valve; 2-7, an ultrafiltration membrane backwashing pipe; 3. a medium water pressure water tank assembly; 3-1, pressure gauge; 3-2, adding a medicine box; 3-3, a metering pump; 3-4, a reclaimed water circulation pipeline; 3-5, an ultraviolet sterilizer; 3-6, a reclaimed water supply pipe; 3-7-cycle switch; 4. a sewage stand pipe; 5. a shower enclosure; 6. a washing tank; 7. a hand basin; 8. a reclaimed water purification and reuse device; 9. a tap water replenishing port; 10. an overflow drain; 11. a reclaimed water outlet; 12. a toilet bowl; 13. a urinal; 14. a floor drain; 15. a water supply vertical pipe.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

Example 1

One embodiment of the present invention discloses a system for recycling indoor reclaimed water of a public building, as shown in fig. 2, comprising a grey water collecting device, a reclaimed water purifying and recycling device 8, a tap water replenishing device and a reclaimed water recycling control system.

The grey water collecting device is used for collecting grey water generated by water using facilities such as a shower room 5, a washing pool 6 and a hand basin 7 on the previous floor, and is connected with the water using facilities for generating high-quality grey water (namely high-quality miscellaneous drainage) by the shower room 5, the washing pool 6 and the hand basin 7 on the previous floor through grey water collecting pipelines.

The grey water collecting device is connected with a grey water inlet of the reclaimed water purifying and recycling device 8 through a grey water feeding pipe 1-1, the reclaimed water purifying and recycling device 8 is used for purifying and sterilizing the grey water collected by the grey water collecting device, and the tap water replenishing device is used for replenishing water to the reclaimed water purifying and recycling device 8, so that the liquid level in the reclaimed water purifying and recycling device 8 is kept stable, and the reclaimed water purified and sterilized in the reclaimed water purifying and recycling device 8 can meet the use requirement of reclaimed water recycling facilities of the layer.

A tap water replenishing port 9 of the reclaimed water purifying and recycling device 8 is connected with a tap water replenishing device through tap water replenishing pipes 1-9, and the tap water replenishing device is connected into the tap water pipe; the reclaimed water outlet 11 of the reclaimed water purifying and recycling device 8 is connected with the reclaimed water recycling facility on the layer. The reclaimed water purification and reuse device 8 is internally provided with liquid level sensors 1-10, and the liquid level sensors 1-10 are used for sensing the high and low water level states in the grey water storage tank 1.

The reclaimed water recycling control system is used for integrally controlling an indoor reclaimed water recycling system of a public building, is connected with an ash water collecting device, a tap water replenishing device and a reclaimed water purifying and recycling device 8 in a wired or wireless mode, and realizes the functions of collecting ash water, purifying and sterilizing reclaimed water and replenishing tap water automatically by controlling valves, pumps, liquid level sensors and the like in various devices. The system can also display the real-time working state of each main functional part of the system in the running process and give an alarm for indicating the water shortage of the grey water storage tank, the insufficient disinfection dose, the standard service life of the purification assembly consumable and the like.

The process of recycling reclaimed water by using the indoor reclaimed water recycling system of the public building of the embodiment is shown in fig. 1, and the indoor reclaimed water recycling method of the public building comprises the following steps:

the method comprises the following steps: the grey water collecting device collects the grey water of the previous floor and supplies the grey water of the previous floor to the reclaimed water purifying and recycling device 8 of the next floor. The grey water collecting device collects the grey water generated by water using facilities such as a shower room 5, a washing pool 6, a hand washing basin 7 and the like on the previous floor, and the collected grey water is discharged into a reclaimed water purifying and recycling device 8 on the next floor through a grey water supply pipe 1-1.

Step two: the reclaimed water purification and reuse device 8 performs multi-stage purification treatment on the supplied grey water, and the reclaimed water subjected to the multi-stage purification treatment is pressurized and then supplied to reclaimed water reuse facilities of the floor.

The grey water entering the reclaimed water purification and reuse device 8 is subjected to coarse filtration, precipitation, fine filtration, disinfection and pressurization treatment. The adopted coarse filtration measure is a hair filter, the precipitation measure is flocculation and emptying, and the fine filtration measure comprises the following steps: primary grating, standing and precipitating, PP cotton filtering, active carbon filtering and ultrafiltration membrane filtering, intercepting and purifying large particles, small particles and fine microorganisms, and finally achieving the high-standard effluent requirement by adding medicine for disinfection and ultraviolet disinfection. And (4) pressurizing the reclaimed water subjected to the multi-stage purification treatment in an air pressure water tank, and supplying the pressurized reclaimed water to reclaimed water recycling facilities of the floor.

Furthermore, the grey water storage tank 1 of the reclaimed water purifying and recycling device 8 is provided with a prefilter assembly, the prefilter assembly is used for prefilter treatment of supplied grey water to intercept impurities such as hair and large particles in the grey water, the grey water after prefilter treatment enters the grey water treatment assembly 2, the grey water is subjected to three-stage purification by PP cotton, activated carbon and an ultrafiltration membrane in the grey water treatment assembly 2, then enters the air pressure water tank, is quantitatively dosed and sterilized by a metering pump 3-3, and is conveyed to a reclaimed water outlet 11 at a constant pressure for a closet 12 and/or a urinal 13 on the floor, and sewage generated by the closet 12, the urinal 13 and a floor drain 14 is directly discharged into the sewage vertical pipe 4.

When the liquid level in the reclaimed water purifying and recycling device 8 reaches the starting water supplementing liquid level 1-12, the reclaimed water recycling control system controls the tap water supplementing device to supplement water in real time, namely when the grey water in the reclaimed water purifying and recycling device 8 is not supplied enough, the reclaimed water recycling control system receives signals of the liquid level sensors 1-10, a display of the control device displays 'water shortage', the tap water supplementing port 9 opens water supplementing at the moment, the display of the control device displays 'normal' along with the rising of the liquid level of the grey water storage tank 1 in the reclaimed water purifying and recycling device 8, and the tap water supplementing port 9 is closed. Wherein, the ultrafiltration membrane of the grey water treatment component 2 carries out automatic back flushing according to the time of one week, and is controlled by a control device, and the ultrafiltration membrane back flushing pipes 2-7 and the overflow pipes 1-3 are discharged into the sewage vertical pipe 4 through the overflow discharge port 10.

When the content of the disinfectant in the reclaimed water recycling device 8 is insufficient, the reclaimed water recycling control system carries out early warning prompt. When the dosing amount in the reclaimed water air pressure water tank assembly 3 is insufficient, the control system receives a signal uploaded by the metering pump 3-3, a display of the control device displays 'lack of dosing', the dosing is performed through manual operation at the moment, when the dosing is completed, the display of the control system displays 'normal', and the metering pump 3-3 works normally.

Compared with the prior art, the indoor reclaimed water recycling system for public buildings provided by the embodiment has the following beneficial effects:

(1) by arranging the staggered floor drainage system, high-quality miscellaneous drainage of the previous floor is collected and is used for flushing a toilet (a toilet bowl and/or a urinal) of the floor after purification and disinfection, so that the aim of distributed staggered floor drainage is fulfilled, and the problem of difficulty in collecting domestic miscellaneous water of public buildings is solved.

(2) The water use proportion of the public building is 34-40% of the toilet water and 60-66% of the toilet flushing water, so that all the washing water (high-quality miscellaneous drainage) can be collected and recycled, the tap water consumption in the toilet flushing water is greatly reduced, and the system water saving of the public building is realized. Except for the top layer, the system can save water by 34-40 percent, and has important value and significance for reducing the water resource consumption of public buildings and improving the utilization efficiency of non-traditional water resources.

(3) The reclaimed water purifying and recycling device can carry out multi-stage purification treatment on the grey water, and has high purification efficiency: the adoption of multi-stage purification treatment measures can intercept and purify large particles, small particles and fine microorganisms, and the high-standard water outlet requirements are met by adding drugs for disinfection and ultraviolet disinfection.

(4) The reclaimed water recycling control system with high intelligent control level is adopted, and the realization of a treatment target is ensured and the equipment failure rate is reduced through various intelligent management and control modes.

Example 2

In another embodiment of the present invention, a recycled water purifying and recycling apparatus 8 in embodiment 1 is disclosed, as shown in fig. 3, the recycled water recycling apparatus in the public building room comprises a grey water storage tank 1, a grey water treatment component 2, and a recycled water pneumatic water tank component 3; the grey water storage tank 1 is used for collecting and storing grey water generated by a washing pool 6, a hand basin 7 and a shower room 5 on the previous floor; the grey water treatment component 2 is used for carrying out multi-stage purification treatment on the grey water stored in the grey water storage tank 1; the reclaimed water air pressure water tank component 3 is used for supplying water to the toilet flushing water point in a constant pressure mode after the purified reclaimed water is disinfected.

In this embodiment, the whole of the reclaimed water purifying and recycling device 8 is vertically arranged, and the reclaimed water purifying and recycling device 8 is internally provided with the grey water storage tank 1, the grey water treatment assembly 2 and the reclaimed water air pressure water tank assembly 3 from top to bottom in sequence, so that the gravitational potential energy of the water body can be better utilized, and the operation energy consumption of the reclaimed water purifying and recycling device is reduced. The reclaimed water purifying and recycling device 8 is integrally of a box-type structure, is placed at the side wall of the toilet and is installed in a floor type, and the box-type structure is detachably connected with the wall body, and has good stability if being connected by a rivet. The reclaimed water purification and recycling device 8 with a box-type structure is divided into two parts, namely a device module and an external decoration module, wherein the device module comprises a gray water storage tank 1, a gray water treatment component 2 and a reclaimed water pneumatic water tank component 3 which are arranged in parallel to form the device module, the thickness of the device module is 30cm, the structural form is flat, the width is 100cm, and the height is 2200 cm. The outer decoration module is a box-type structure shell, can be adjusted by combining with actual site use conditions, is a standing ground (from a lower floor to an upper ceiling), and consists of a fixed part and an opening fan, and ceramic tiles or other decoration materials can be hung on an outer vertical surface and are matched with a toilet decoration environment.

In this embodiment, the grey water storage tank 1 is provided with a grey water inlet, a tap water replenishing port 9 and an overflow discharge port 10, the inside of the grey water storage tank 1 is provided with a liquid level sensor 1-10, a high liquid level point and a low liquid level point, and the bottom of the reclaimed water air pressure water tank component 3 is provided with a reclaimed water outlet 11. Wherein, the liquid level sensor 1-10 is used for sensing the water level state in the grey water storage tank 1 and adopts a float valve liquid level sensor; the grey water inlet of the grey water storage tank 1 is connected with a high-quality miscellaneous drainage water using appliance on the upper floor through a grey water feeding pipe 1-1, a hair filter 1-2 is arranged on the grey water feeding pipe 1-1, and the hair filter 1-2 is used for pre-filtering sundries such as grey water hair, toilet paper and the like before entering the grey water storage tank 1. An overflow discharge port 10 of the grey water storage tank 1 is connected with a sewage vertical pipe 4 through an overflow pipe 1-3, the overflow pipe 1-3 is used for discharging high liquid level water in the grey water storage tank 1, and a drain outlet at the bottom of the grey water storage tank 1 is connected with the sewage vertical pipe 4 through an emptying pipe 1-4; the emptying pipe 1-4 is provided with an emptying manual valve 1-5, and sediment at the bottom of the grey water collecting tank is discharged through the emptying pipe 1-4 under the action of gravity by controlling the emptying manual valve 1-5. A tap water replenishing port 9 of the grey water storage tank 1 is connected with a water supply vertical pipe 15 of a public building through tap water replenishing pipes 1-9, and a reclaimed water outlet 11 of the water pneumatic water tank component 3 is connected with a reclaimed water recycling facility on the layer; the tap water replenishing pipe 1-9 is provided with an automatic water replenishing valve 1-7 and/or a manual water replenishing valve 1-8, the automatic water replenishing valve 1-7 is used for automatically controlling the tap water pipe to replenish water to the grey water storage tank 1, and the manual water replenishing valve 1-8 is used for manually controlling the tap water to replenish water. The water outlet of the grey water storage tank 1 is connected with the water inlet of the grey water treatment component 2 through a first drainage pipe, a control valve 1-6 is arranged on the first drainage pipe, and the control valve 1-6 is used for controlling the drainage pipe of the grey water storage tank 1 connected with the grey water treatment component 2 and metering the quantity of grey water fed into the grey water treatment component 2; the grey water treatment component 2 is connected with the reclaimed water air pressure water tank component 3 through a second drain pipe, a check valve 2-5 is arranged on the second drain pipe, and the check valve 2-5 is used for preventing reclaimed water in the reclaimed water air pressure water tank component 3 from being poured into the grey water treatment component 2.

Furthermore, the bottom surface of the ash water storage tank 1 is a slope surface, so that particulate matters and flocs in the ash water can slide down and be gathered along the slope under the action of gravity, the slope of the slope surface is 5%, the emptying pipes 1-4 are arranged along the slope direction of the slope surface, the drain outlet is arranged at the bottom end of the slope surface, and the gathered particulate matters and flocs are drained to the sewage vertical pipe 4 through the emptying pipes 1-4 under the action of gravity by opening the emptying manual valves 1-5.

Furthermore, the grey water storage tank 1 is provided with an overflow liquid level and a water supplementing starting liquid level, and the lower edge of the tap water supplementing opening 9 is 150mm higher than the overflow liquid level, so that the stored grey water is prevented from flowing backwards to pollute tap water. That is, the tap water replenishing port 9 is positioned above the overflow discharge port 10, the tap water replenishing pipes 1 to 9 are horizontally arranged in parallel with the overflow pipe 1 to 3, the tap water replenishing pipes 1 to 9 are higher than the overflow pipe 1 to 3, and the vertical distance between the central line of the tap water replenishing pipes 1 to 9 and the central line of the overflow pipe 1 to 3 is not less than 150 mm; the high liquid level line is flush with the overflow pipeline, the low liquid level line is 50mm higher than the bottom slope top of the grey water storage tank 1, and tap water is started to replenish water when the liquid level drops to the low liquid level line.

In this embodiment, the grey water treatment assembly 2 comprises a multi-stage purification assembly. Illustratively, the grey water treatment assembly 2 includes a first stage purification assembly 2-2, a second stage purification assembly 2-3, and a third stage purification assembly 2-4 connected in series. Wherein the first stage purification assembly 2-2 is used for filtering large particulate matters, metal oxides in a non-dissolved state, broken hairs and the like in the grey water. Furthermore, the first-stage purification component 2-2 adopts PP cotton/coarse filter screen, the PP cotton is made of polyester fiber, has a preposed purification effect, and filters colloid impurities with the diameter more than 5 μm in the grey water; the second-stage purification component 2-3 is used for filtering small-particle-size particles, organic pollutants, colorimetric substances, heavy metal ions and the like in the grey water. Further, the second-stage purification component 2-3 adopts a modified granular activated carbon column, the activated carbon is a carbide with a developed surface micropore structure, the diameter of each micropore is 2-50 nm, and acid and alkali substances in the grey water are treated. The third-stage purification component 2-4 is used for intercepting turbidity substances, macromolecular organic matters, bacteria and partial viruses, improving the sensory effect of water production and reducing the quantity of microorganisms. Furthermore, the third-stage purification component 2-4 adopts an internal pressure type ultrafiltration membrane which is a polymer semipermeable membrane, the pressure is used as a driving force, the membrane aperture is 1-100 nm, the pore density is about 10/cm, and the third-stage purification component is used for removing colloid-grade particles and macromolecules and can separate a solution with the concentration less than 10%. The water outlet of the third-stage purification assembly 2-4 is connected with the water inlet of the reclaimed water air pressure water tank assembly 3 through a second water drainage pipe.

Furthermore, the first-stage purification component 2-2, the second-stage purification component 2-3 and the third-stage purification component 2-4 are all cylindrical structures, and joints are in threaded connection, so that the disassembly in the maintenance process is facilitated.

Furthermore, according to the difference of the processing capacities of the first-stage purification component 2-2, the second-stage purification component 2-3 and the third-stage purification component 2-4, the ratio of the built-in capacities of the first-stage purification component 2-2, the second-stage purification component 2-3 and the third-stage purification component 2-4 is set to be 2:2:1, and under the condition that all stages of purification components are completely consumed, the purification components can process reclaimed water with the same capacity, so that the three stages of purification components can be replaced at the same time, convenience and rapidness are realized, excessive system shutdown times and overlong shutdown time caused by batch replacement of the purification components are avoided, and the working continuity of the system is ensured.

Furthermore, the grey water treatment component 2 also comprises a variable frequency pump 2-1, a check valve 2-5, an ultrafiltration membrane backwashing pipe 2-7 and a backwashing electromagnetic valve 2-6. The variable frequency pump 2-1 is used for pressurizing the grey water collected in the grey water storage tank 1 and then feeding the grey water into the first-stage purification component 2-2; the check valve 2-5 is used for preventing reclaimed water in the reclaimed water pressure water tank component 3 from being poured into the grey water treatment component 2; the ultrafiltration membrane backwashing pipe 2-7 is used for discharging impurities after backwashing of the ultrafiltration membrane and discharging the liquid after backwashing to the sewage vertical pipe 4; and the back-washing electromagnetic valves 2-6 are used for controlling the back-washing process of the ultrafiltration membrane.

In the embodiment, the medium water pneumatic water tank assembly 3 comprises a pneumatic water tank, a pressure gauge 3-1, a dosing tank 3-2, a metering pump 3-3, an ultraviolet sterilizer 3-5 and a medium water supply pipe 3-6. The pressure gauge 3-1 is connected with the air pressure water tank, the volume of the air pressure water tank is 100L, the pressure gauge 3-1 is used for monitoring the pressure in the air pressure tank in real time and displaying and remotely transmitting the pressure of the air pressure water tank, the internal pressure of the air pressure tank is controlled to be 0.15-0.20 Mpa, and the subsequent toilet flushing pressure requirement of the toilet 12 and/or the urinal 13 is met; the disinfectant is filled in the dosing tank 3-2, the dosing tank 3-2 is connected with the air pressure tank through the metering pump 3-3, and the metering pump 3-3 can add the disinfectant in the dosing tank 3-2 into the air pressure water tank according to a certain amount; the water and gas pressure water tank assembly 3 is connected with a water utilization facility on the same floor through a reclaimed water supply pipe 3-6, and the reclaimed water supply pipe 3-6 is used for conveying reclaimed water in the reclaimed water pressure water tank assembly 3 to a water utilization point.

The reclaimed water air pressure water tank component 3 is provided with an ultraviolet sterilizer 3-5, the ultraviolet sterilizer 3-5 is arranged inside the air pressure water tank or arranged at a reclaimed water outlet 11 of the air pressure water tank, the ultraviolet sterilizer 3-5 is used for sterilizing reclaimed water in the air pressure water tank, and the sterilized reclaimed water is conveyed to a water consumption point through a reclaimed water supply pipe 3-6.

Furthermore, a reclaimed water outlet 11 of the reclaimed water air pressure water tank component 3 is connected with the grey water storage tank 1 through a reclaimed water circulating pipeline 3-4, and a circulating switch is arranged on the reclaimed water circulating pipeline 3-4, so that reclaimed water circulation between the reclaimed water air pressure water tank component 3 and the grey water storage tank 1 is realized.

Further, the dosing box 3-2 is a plastic box made of a semitransparent UPVC material, a dosing port capable of being opened in a rotating mode is formed in the top of the dosing box, and the disinfectant is liquid disinfectant and comprises 84 disinfectant or sodium hypochlorite disinfectant. The metering pump 3-3 is connected with the dosing tank 3-2, so that dosing can be automatically carried out according to the water yield, the dosing amount is 1-3 mg/L according to the effective chlorine dosing amount, and the dosing point position is the water inlet of the reclaimed water pressure water tank assembly 3.

The working principle of the indoor reclaimed water recycling device for the public building of the embodiment is as follows:

the grey water collecting device collects high-quality impurity drainage water of the previous floor through a grey water collecting pipeline, and collected grey water is treated by a hair filter 1-2 arranged on a grey water feeding pipe 1-1 and then is fed into a grey water storage tank 1. Under the pumping action of the sewage pump, the grey water is pressurized by the sewage pump through the control valves 1-6, is conveyed into the grey water treatment component 2 through a pipeline for three-stage purification treatment, and enters the medium water pressure water tank component 3 for storage after three-stage purification, and is used for flushing a toilet through a toilet flushing water supply pipeline. The whole link is closed, the water pressure of the flushing water is subjected to variable frequency regulation by a sewage pump through produced water, the treated reclaimed water is not decompressed, the treatment-storage-water supply function is realized through once pressurization, and the whole energy consumption of the system is reduced.

In the step of treating the grey water by using the grey water treatment component 2, the three-stage purification treatment is adopted, the water production process is that the grey water passes through the first-stage purification component 2-2, the second-stage purification component 2-3 and the third-stage purification component 2-4 in sequence, the water production rate is controlled by a sewage pump, the water production rate ranges from 2L/min to 10L/min, and the pneumatic water tank can be filled in the fastest 10 min. Wherein, the first-stage purification is a rough filtration process, and large particles, undissolved metal oxides, broken hair and the like in the ash water are filtered by adopting a PP cotton/rough filter; the second-stage purification is a fine filtration process, and a modified granular activated carbon column is adopted to filter small-particle-size particles, organic pollutants, colorimetric substances, heavy metal ions and the like in the grey water; the third-stage purification is an ultrafiltration process, and an internal pressure type ultrafiltration membrane component is adopted to intercept turbidity substances, macromolecular organic matters, bacteria and partial viruses, so that the sensory effect of the produced water is improved, and the quantity of microorganisms is reduced.

The reclaimed water subjected to three-stage purification treatment enters the reclaimed water air pressure water tank assembly 3 for storage, the volume of the air pressure water tank is 100L, the pressure gauge 3-1 monitors the pressure of the air pressure water tank in real time, the metering pump 3-3 is connected with the dosing tank 3-2, dosing is automatically carried out according to the water yield, the dosing amount is 1-3 mg/L according to the effective chlorine dosing amount, and the dosing point is the water inlet of the reclaimed water air pressure water tank assembly 3. The purified reclaimed water enters water supply pipelines of a toilet bowl 12 and a urinal 13 on the same floor.

The level of the grey water rises continuously with the continuous water inlet of the grey water storage tank 1, and when the level reaches the overflow level, the grey water automatically overflows and is discharged into the sewage vertical pipe 4. Along with the continuous production of water in the grey water storage tank 1, when the liquid level of the grey water storage tank 1 is continuously reduced and the liquid level is reduced to a water supplementing starting liquid level, the automatic water supplementing valve 1-7 is opened, and tap water is supplemented through the tap water supplementing pipe 1-9; when the automatic water replenishing valve 1-7 cannot be opened due to a fault, the manual water replenishing valve 1-8 of the parallel facility is manually opened to replenish tap water. Along with the continuous supplement of tap water, the liquid level of the grey water storage tank 1 is gradually increased, and when the liquid level reaches an overflow liquid level, the automatic water supplement valves 1-7 are automatically closed.

After the reclaimed water recycling device operates for a period of time, sediment generated in the grey water storage tank 1 passes through the bottom slope of the grey water storage tank 1 and is accumulated at the bottom of the grey water storage tank under the action of gravity, when the sediment in the grey water storage tank 1 is more, the emptying manual valve 1-5 is opened, and the sediment is discharged into the sewage vertical pipe 4 under the flushing of grey water.

In this embodiment, the reclaimed water after the three-stage purification can meet the following water quality requirements:

the pH value is 6.0-9.0; the color (degree) is less than or equal to 30; no unpleasant sensation in smell; turbidity (NTU) is less than or equal to 5; the total soluble solid content is less than or equal to 1500 mg/L; after contacting for 30min, the total residual chlorine is more than or equal to 1.0mg/L, and the total residual chlorine at the tail end of the pipe network is more than or equal to 0.2 mg/L; the total number of colibacillus is less than or equal to 3/L

Compared with the prior art, the indoor reclaimed water recycling device for the public building provided by the embodiment has the following beneficial effects:

(1) the reclaimed water purifying and recycling device is integrally of a box-type structure and is vertically arranged, the gray water storage tank, the gray water treatment assembly and the reclaimed water air pressure water tank assembly are sequentially arranged from top to bottom, the gravitational potential energy of a water body can be better utilized, the operation energy consumption of the reclaimed water purifying and recycling device is reduced, the structure is compact, the space layout inside a toilet of a large public building is combined, the occupied space of the reclaimed water is intensively treated by greatly reducing the miscellaneous water, the installation of the reclaimed water recycling device is more flexible and convenient, and the potential safety hazard of misconnection and mixed connection of a water supply vertical pipe and a reclaimed water pipe is avoided.

(2) The multi-stage purification treatment is carried out on the reclaimed water, the interception and purification of large particles, small particles and fine microorganisms in the reclaimed water can be realized, the high-standard water outlet requirement is met through dosing disinfection and ultraviolet disinfection, and the safety of reclaimed water reuse is ensured.

(3) The internal pressure of the air pressure tank is controlled to be 0.15-0.20 Mpa, the subsequent toilet flushing pressure requirement of a toilet and a urinal is met, the frequency conversion adjustment of produced water is realized by arranging the air pressure tank and a pressure gauge, the pressure of the treated reclaimed water is not released, the treatment-storage-water supply function is realized by one-time pressurization, and the overall energy consumption of the system is reduced; the pressure gauge is used for monitoring the pressure in the air pressure tank, and can display and remotely transmit the pressure of the air pressure water tank, so that the intelligent control degree of the reclaimed water recycling device is improved.

(4) The reclaimed water outlet of the reclaimed water air pressure water tank assembly is connected with the grey water storage tank through a reclaimed water circulating pipeline, and a circulating switch is arranged on the reclaimed water circulating pipeline, so that reclaimed water circulation of the reclaimed water air pressure water tank assembly and the grey water storage tank is realized, systematic water saving is realized, and meanwhile, the condition that reclaimed water of the reclaimed water air pressure water tank assembly is not recycled and water quality deterioration occurs to influence safe water supply for flushing a toilet is avoided.

Example 3

The existing indoor drainage mode of buildings is that after an upper-layer appliance uses water, the produced water is drained to a lower-layer top plate along the gravity of a drainage pipeline and finally drained to a sewage vertical pipe through a transverse branch pipe laid at the lower-layer top plate.

The embodiment discloses a construction method of an indoor reclaimed water recycling system of a public building in embodiment 1, which realizes independent collection of high-quality miscellaneous drainage (washing, washing and showering) of an upper-layer public building by modifying an original building drainage system, and the high-quality miscellaneous drainage is recycled for a lower-layer toilet flushing after purification and disinfection. The construction method of the indoor reclaimed water reuse system of the public building comprises the following steps:

the drainage horizontal branch pipe of the high-quality miscellaneous drainage (ash water) of the previous floor is disconnected and connected with an ash water feeding pipe 1-1, and the ash water feeding pipe 1-1 is inserted through a reserved opening of a structural floor slab of the toilet and enters the space of the next floor; installing a reclaimed water purification and reuse device 8, inserting an ash water feeding pipe 1-1 into an ash water feeding pipe socket of the reclaimed water purification and reuse device 8, and sealing and fixing; a reclaimed water outlet 11 of the reclaimed water purifying and recycling device 8 is connected with the water-using facility on the layer through a pipeline; connecting the tap water replenishing pipes 1-9 with a reclaimed water purifying and recycling device 8; an overflow discharge port 10 in the reclaimed water purifying and recycling device 8 is connected with the sewage vertical pipe 4.

Before the reclaimed water purifying and recycling device 8 is installed, the actual length from the bottom of the special exposed straight pipe of the grey water feeding pipe 1-1 on the top plate of the toilet to the top of the grey water feeding pipe socket of the reclaimed water purifying and recycling device 8 is measured on site, and the grey water feeding pipe 1-1 with the corresponding length is selected according to the measured length. Further, the material of the grey water supply pipe 1-1 is rigid polyvinyl chloride (PVC-U).

In the construction process, cutting off the vertical pipe of the high-quality miscellaneous drainage water at the lower layer top plate, laying an independent grey water pipeline, connecting the grey water pipeline, and connecting the high-quality miscellaneous drainage water to the indoor reclaimed water purifying and recycling device 8 at the lower layer for collection, treatment and recycling; the black water drain pipes for the upper toilet bowl 12 and the urinal 13 are kept unchanged and are drained according to the pipe system. Since the indoor reclaimed water purifying and recycling device 8 is directly arranged in the lower layer toilet, the length of the separate grey water pipeline is not too long.

The water supply pipeline of the toilet 12 and the urinal 13 on the same floor with the reclaimed water purifying and recycling device 8 is reformed in a way that: the water supply pipe is cut off, the reclaimed water pneumatic water tank assembly 3 is connected with the toilet bowl 12 and the urinal 13 on the same floor through pipelines, and the toilet bowl 12 and the urinal 13 are supplied with water only by the reclaimed water pneumatic water tank assembly 3 on the same floor.

The grey water storage tank 1, the grey water treatment component 2 and the reclaimed water air pressure water tank component 3 are sequentially built and installed from top to bottom, after the reclaimed water purification and recycling device 8 is built, a grey water pipeline which is independently laid on the upper layer is connected to the reclaimed water purification and recycling device 8, and a reclaimed water outlet 11 of the water purification and recycling device 8 is connected with a water using facility on the layer through a pipeline. The joint of the system pipeline is sealed and fixed by adopting a rigid polyvinyl chloride (PVC-U) adhesive, and illustratively, the joint of the grey water feeding pipe 1-1 and the socket of the grey water feeding pipe is coated with the rigid polyvinyl chloride (PVC-U) adhesive for sealing and fixing.

In the embodiment, the grey water storage tank 1, the grey water treatment component 2 and the reclaimed water air pressure water tank component 3 are vertically built, so that the gravitational potential energy of the water body can be better utilized, and the operation energy consumption of the reclaimed water purifying and recycling device is reduced. The reclaimed water purification and reuse device 8 is integrally constructed into a box-type structure and comprises a device module and an outer decoration module, wherein the thickness of the device module is 30cm, the structural form is flat, the width is 100cm, the height is 2200cm, and the device module can be placed at the side wall of a toilet. The external decoration module can be adjusted by combining with the use conditions of an actual field, is used for jacking the natural ground (from a lower floor to an upper ceiling), and consists of a fixed part and a fan, and the external vertical surface can be hung with ceramic tiles or other decoration materials and is matched with the toilet decoration environment.

During the construction process, the method is carried out according to the following requirements:

1. the thickness of the building construction layer of the toilet is not less than 100 mm.

2. When the sewage vertical pipe is arranged in the toilet, a floor-penetrating hole of the sewage vertical pipe is reserved. The single-riser hole size is not less than 400mm multiplied by 450mm, the double-riser hole size is not less than 400mm multiplied by 500mm, and the double-riser hole size is matched with the structure speciality.

3. When the sewage vertical pipe is arranged in the pipe well, the size of the through-wall hole of the side discharge pipe is not less than 200mm multiplied by 250mm, and the through-wall hole is matched with the structure speciality.

4. When the modular indoor reclaimed water system transformation is carried out on the existing public building toilet, the plane layout, the reserved space and the reserved position are combined.

5. The vertical sewage pipe is arranged at the same side of the closet 12, and the distance between the center of the vertical sewage pipe and the center of the closet 12 is not more than 1000 mm.

Compared with the prior art, the construction method of the indoor reclaimed water recycling system of the public building has the following beneficial effects:

(1) the high-quality miscellaneous drainage of the previous floor is collected by combining the spatial layout in the toilet of the large public building and arranging the staggered floor drainage system, and the high-quality miscellaneous drainage is used for flushing the toilet (the toilet bowl and/or the urinal) of the floor after purification and disinfection, so that the aim of distributed staggered floor drainage is fulfilled, and the problem of difficulty in collecting domestic miscellaneous water of the public building is solved.

(2) The reclaimed water purifying and recycling device is integrally built into a box structure and is vertically arranged, the grey water storage tank, the grey water treatment assembly and the reclaimed water air pressure water tank assembly are sequentially built from top to bottom, the gravitational potential energy of a water body can be better utilized, the operation energy consumption of the reclaimed water purifying and recycling device is reduced, the structure is compact, the space occupied by the concentrated treatment of the miscellaneous water is greatly reduced by combining the internal space layout of a toilet of a large public building, the installation of the reclaimed water recycling device is more flexible and convenient, and the potential safety hazard of misconnection and mixed connection of a water supply vertical pipe and a reclaimed water pipe is avoided.

Example 4

The invention also discloses a reclaimed water recycling control system for controlling the operation of the indoor reclaimed water recycling system of the public building in the embodiment 1, namely discloses an indoor reclaimed water recycling control system of the public building, which comprises a raw water tank liquid level control assembly, a tap water replenishing control assembly, a reclaimed water circulating and purifying control assembly, a disinfection control assembly and a display and alarm assembly.

The original water tank liquid level control assembly is used for controlling the liquid level height in the grey water storage tank 1 and comprises a water level controller and liquid level sensors 1-10, wherein the liquid level sensors 1-10 are used for sensing the alarm liquid level, the low liquid level, the high liquid level and the overflow liquid level in the grey water storage tank 1, the liquid level heights are the alarm liquid level, the low liquid level, the high liquid level and the overflow liquid level from low to high in sequence, the low liquid level is the water supplementing starting liquid level 1-12, and the high liquid level is the water supplementing stopping liquid level 1-11. The liquid level sensors 1-10 can transmit the liquid level information monitored in real time to the water level controller, and the water level controller controls the tap water replenishing control assembly according to the received liquid level information so as to control the liquid level height in the grey water storage tank 1. In addition, the water level controller can also transmit the water level information and the alarm information to the display and alarm assembly and display the water level information and the alarm information on a display screen of the display and alarm assembly.

The tap water replenishing control assembly comprises a water replenishing controller, automatic water replenishing valves 1-7 and manual water replenishing valves 1-8, wherein the water replenishing controller is used for controlling the automatic water replenishing valves 1-7 to be opened and closed, when the liquid level sensors 1-10 monitor that the liquid level reaches a low liquid level, the water replenishing controller controls the automatic water replenishing valves 1-7 to be opened, and when the liquid level sensors 1-10 monitor that the liquid level reaches a high liquid level, the water replenishing controller controls the automatic water replenishing valves 1-7 to be closed. When the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 reaches an alarm liquid level, the liquid level sensor 1-10 transmits alarm liquid level information to a liquid level controller, the liquid level controller displays the alarm liquid level information on a display screen of a system to remind an automatic water replenishing valve 1-7 to be automatically opened or a manual water replenishing valve 1-8 to be manually opened; when the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 reaches a low liquid level, the liquid level sensor 1-10 transmits low liquid level information to the liquid level controller, and the liquid level controller starts an automatic tap water replenishing valve 1-7 by controlling a water replenishing controller of a tap water replenishing control assembly to replenish tap water so as to gradually raise the liquid level; when the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 rises to a high liquid level, the liquid level sensor 1-10 transmits high liquid level information to the liquid level controller, the liquid level controller closes the automatic tap water replenishing valve 1-7 by controlling the water replenishing controller of the tap water replenishing control assembly, and the tap water is stopped from being replenished; when the liquid level sensor 1-10 detects that the liquid level reaches the overflow liquid level, the raw water in the grey water storage tank 1 automatically overflows and flows into the sewage vertical pipe 4 through the overflow pipe 1-3.

And the reclaimed water circulating and purifying control component is used for starting circulating purification and periodic circulating purification of reclaimed water in the reclaimed water pressure water tank component 3. The reclaimed water circulation purification control component comprises a circulation purification controller, circulation switches 3-7 and circulation equipment, wherein the circulation equipment adopts a circulation pump, the circulation switches 3-7 are arranged on reclaimed water circulation pipelines 3-4, the circulation purification controller controls the circulation pump to discharge water to be subjected to circulation purification in the air pressure water tank into the grey water storage tank 1 along the circulation pipelines 3-4 by controlling the circulation switches 3-7, and circulation purification treatment is carried out along with a new water production process.

And starting the circulation purification, namely starting the circulation equipment after the machine is powered on, and circularly purifying and filtering all the water stored in the air pressure water tank, wherein the purification time is determined by calculation according to the maximum water storage volume and the water production rate of the air pressure water tank, and the total starting purification time is not more than 2 minutes. And (4) periodic circulating purification, namely when the stored water in the air pressure water tank is not used for more than 12 hours, circulating purification and filtration are carried out on all the stored water in the air pressure water tank.

The disinfection control assembly comprises a disinfection controller, and the disinfection controller quantitatively adds disinfectant by controlling a metering pump 3-3 according to the water yield of a variable frequency pump 2-1. The disinfectant is liquid disinfectant, and the type of the disinfectant comprises 84 disinfectant or sodium hypochlorite disinfectant.

And the display and alarm component is used for carrying out screen display and alarm according to information input by the original water tank liquid level control component, the tap water replenishing control component, the reclaimed water circulation purification control component and the disinfection control component. The display and alarm assembly comprises a display screen and an alarm, the display screen is used for displaying liquid level, disinfectant and purification assembly filtering volume, and the alarm is used for giving an alarm on water shortage of the grey water storage tank, giving an alarm on insufficient disinfection dosage and giving an alarm on maintenance of purification assembly consumable materials. Wherein, the water shortage warning triggering mode of the grey water storage tank is as follows: alarming when the liquid level reaches the alarm liquid level and alarming when the dosage in the disinfectant container is insufficient; the consumable maintenance alarm triggering mode of the purification assembly is as follows: through the water yield measurement according to the filtration volume that purifies the subassembly, when reaching the biggest filtration capacity that purifies the subassembly, the alarm sends the consumptive material and maintains the alarm. The alarm mode of the alarm comprises sound and color alarm, wherein the sound alarm is a sound alarm with the sound intensity not less than 80 decibels, and the color alarm is that the background color of the display screen is displayed in red. After the alarm fault is processed, the alarm fault can be eliminated through screen operation.

The control process of the reclaimed water recycling system in the public building room in the embodiment 1 by using the reclaimed water recycling control system of the embodiment is shown in fig. 4. The method for controlling the reuse of the indoor reclaimed water of the public building comprises the following control processes:

the water production control is carried out by utilizing a liquid level control component of an original water tank, a tap water replenishing control component and a reclaimed water circulating and purifying control component;

sterilizing and controlling the produced reclaimed water by using a sterilization control assembly;

and the display and alarm assembly is used for displaying the working state and controlling the alarm.

Further, utilize former water tank liquid level control subassembly, running water moisturizing control assembly, well hydrologic cycle to purify control assembly and carry out the product water control, specifically do:

after the reclaimed water recycling control system is started, circulating equipment of the reclaimed water circulating purification control assembly is started, all reclaimed water stored in the air pressure water tank is discharged into the gray water storage tank 1 through a reclaimed water circulating pipeline 3-4, simultaneously/later, gray water generated in the previous floor sequentially enters the gray water storage tank 1 through a gray water collecting pipeline and a gray water feeding pipe 1-1, reclaimed water (including reclaimed water purified by the starting-up circulating purification and gray water generated in the previous floor) entering the gray water storage tank 1 is subjected to three-stage purification through a gray water treatment assembly 2 and then enters the air pressure water tank; the reclaimed water entering the air pressure water tank is pressurized and then supplied to reclaimed water reuse facilities of the floor.

When the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 reaches an alarm liquid level, the liquid level sensor 1-10 transmits alarm liquid level information to a liquid level controller, the liquid level controller displays the alarm liquid level information on a display screen of a system to remind an automatic water replenishing valve 1-7 to be automatically opened or a manual water replenishing valve 1-8 to be manually opened; when the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 is lower than the overflow liquid level, the liquid level sensor 1-10 transmits low liquid level information to the liquid level controller, the liquid level controller does not act, the grey water storage tank 1 continuously collects grey water of an upper floor, the collected grey water enters the grey water treatment component 2 for three-stage purification treatment, and continuously produced water enters the air pressure water tank; when the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 reaches a low liquid level, the liquid level sensor 1-10 transmits low liquid level information to a liquid level controller, and the liquid level controller starts an automatic tap water replenishing valve 1-7 by controlling a water replenishing controller of a tap water replenishing control assembly or manually controls a manual water replenishing valve 1-8 to replenish tap water so as to gradually raise the liquid level; when the liquid level sensor 1-10 monitors that the liquid level in the grey water storage tank 1 rises to a high liquid level, the liquid level sensor 1-10 transmits high liquid level information to a liquid level controller, and the liquid level controller closes an automatic tap water replenishing valve 1-7 by controlling a water replenishing controller of a tap water replenishing control assembly or manually closes a manual water replenishing valve 1-8 to stop the water replenishing of tap water; when the liquid level sensor 1-10 detects that the liquid level reaches the overflow liquid level, the raw water in the grey water storage tank 1 automatically overflows and flows into the sewage vertical pipe 4 through the overflow pipe 1-3.

In the embodiment, when the reclaimed water in the air pressure water tank is stored for more than 12 hours and water is not supplied, the circulating switch 3-7 of the reclaimed water circulating and purifying control assembly is started, all the reclaimed water stored in the air pressure water tank is discharged into the grey water storage tank 1 through the reclaimed water circulating pipeline 3-4 for circulating and purifying treatment, and the reclaimed water subjected to circulating and purifying treatment enters the air pressure water tank again.

Further, utilize disinfection control assembly to carry out disinfection control to the normal water of output, specifically do:

and a disinfection controller of the disinfection control assembly quantitatively feeds the disinfectant in the dosing tank 3-2 into the air pressure water tank for disinfection by controlling the metering pump 3-3 according to the water yield of the variable frequency pump 2-1, controls the metering pump 3-3 to start working when the variable frequency pump 2-1 works, and feeds different metered disinfectants according to the power of the variable frequency pump. When the variable frequency pump 2-1 is suspended, the disinfectant is not put into the air pressure water tank any more.

Further, the working state display and alarm control are carried out by utilizing the display and alarm assembly, and the method specifically comprises the following steps:

the display and alarm component displays the working state information on a display screen according to the information transmitted by the original water tank liquid level control component, the tap water replenishing control component, the reclaimed water circulating purification control component and the disinfection control component, the alarm gives an alarm for water shortage of the grey water storage tank, insufficient disinfection dose and consumable maintenance of the purification component according to the working state information, and the alarm mode is screen red background display and/or audible alarm.

Wherein, the working state information comprises liquid level state information, disinfectant residual amount information and information of the volume of the finished filtering of the purifying assembly. The water shortage alarm triggering mode of the ash water storage tank is as follows: alarming when the liquid level reaches the alarm liquid level; the alarm triggering mode for insufficient medicament dosage is as follows: the metering data of the metering pump 3-3 displays that the dosage in the dosing tank 3-2 is insufficient, and an alarm is given; the consumable maintenance alarm triggering mode of the purification assembly is as follows: and (4) metering the workload of the variable frequency pump according to the filtering volume of the purifying assembly, and when the control valves 1 to 6 monitor that the water yield reaches the maximum filtering capacity of the purifying assembly, sending a consumable maintenance alarm by an alarm.

Illustratively, when the liquid level sensors 1-10 monitor the alarm liquid level in the grey water storage tank 1, the water shortage alarm of the grey water storage tank is realized; when the metering data of the metering pump 3-3 shows that the disinfection dose in the dosing tank 3-2 is insufficient, alarming for insufficient dose; when the control valves 1-6 monitor that the water yield reaches the maximum filtration capacity of the purification assembly, the alarm sends out a consumable maintenance alarm. For example, the real-time liquid level change value in the grey water collecting tank is sensed through the liquid level sensors 1-10, when the liquid level value is reduced to a set alarm liquid level, the liquid level sensors send models to the control system, at the moment, the alarm state is reminded in the display screen, and when the liquid level value is increased, the alarm reminding signal is turned off.

Compared with the prior art, the indoor reclaimed water reuse control system for the public building provided by the embodiment controls the liquid level height in the grey water storage tank through the automatic liquid level control assembly of the original water tank; the liquid level height in the grey water storage tank is controlled through a tap water replenishing control assembly, so that the stable and safe working level of the reclaimed water in the grey water storage tank is ensured; the start-up circulation purification and the periodic circulation purification of the reclaimed water in the reclaimed water air pressure water tank assembly are controlled by the reclaimed water circulation purification control assembly, so that the reclaimed water air pressure water tank is communicated with the grey water storage tank, a reclaimed water circulation line is established, and the phenomenon that the quality of the reclaimed water in the reclaimed water air pressure water tank assembly is deteriorated to influence the safe water supply of toilet flushing due to the fact that the reclaimed water is not recycled for a long time is avoided; the quantitative addition of the disinfectant by the metering pump is controlled by the disinfection control assembly, and the disinfectant is added in equal proportion by combining the water yield, so that the disinfection of reclaimed water is realized; the intelligent control level of the indoor reclaimed water recycling control system of the public building is high, smooth proceeding of all links of 'water inlet-water storage-disinfection-water supply' is realized through various intelligent management and control modes, realization of reclaimed water treatment targets is guaranteed, equipment failure rate is reduced, and reliability and stability of system operation are greatly improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. An indoor reclaimed water recycling device for a public building is characterized by comprising a grey water storage tank (1), a grey water treatment component (2), a reclaimed water pneumatic water tank component (3) and a reclaimed water circulating and purifying control component which are sequentially arranged from top to bottom;

the integral reclaimed water reuse device is of a box-type structure, is placed at the side wall of the toilet and is installed in a floor-type manner, and the box-type structure is detachably connected with the wall body; the reclaimed water recycling device with a box-type structure is divided into a device module and an external decoration module, the device module comprises a grey water storage tank (1), a grey water treatment component (2) and a reclaimed water pneumatic water tank component (3) which are arranged in parallel to form the device module, the thickness of the device module is 30cm, the structural form is flat, the width is 100cm, and the height is 2200 cm; the outer decoration module is a box-type structure shell;

the grey water storage tank (1) is used for storing the grey water of the previous floor collected by the grey water collecting device;

the grey water treatment component (2) is used for carrying out multi-stage purification treatment on the grey water in the grey water storage tank (1);

the reclaimed water air pressure water tank assembly (3) is used for disinfecting reclaimed water subjected to multi-stage purification treatment and supplying water to a toilet flushing water point in a constant pressure mode;

the reclaimed water pneumatic water tank assembly (3) comprises a pneumatic water tank, a pressure gauge (3-1), a dosing tank (3-2), a metering pump (3-3) and a reclaimed water supply pipe (3-6), the pressure gauge (3-1) is connected with the pneumatic water tank, the dosing tank (3-2) is connected with the pneumatic water tank through the metering pump (3-3), the dosing tank (3-2) can automatically dose medicine according to the water yield, the dosing amount is 1-3 mg/L according to the effective chlorine dosing amount, and the reclaimed water pneumatic water tank assembly (3) is connected with water utilization facilities on the same floor through the reclaimed water supply pipe (3-6);

a reclaimed water outlet (11) of the reclaimed water air pressure water tank component (3) is connected with the grey water storage tank (1) through a reclaimed water circulation pipeline (3-4), and a circulation switch is arranged on the reclaimed water circulation pipeline (3-4) to realize reclaimed water circulation of the reclaimed water air pressure water tank component (3) and the grey water storage tank (1);

the recycled water circulating and purifying control assembly is used for starting up circulating purification and periodic circulating purification of recycled water in the recycled water pressure water tank assembly (3) and comprises a circulating and purifying controller, a circulating switch (3-7) and a circulating pump, wherein the circulating switch (3-7) is arranged on a recycled water circulating pipeline (3-4), and the circulating and purifying controller controls the circulating pump to discharge water to be subjected to circulating purification in the pressure water tank into the grey water storage tank (1) along the circulating pipeline (3-4) by controlling the circulating switch (3-7); when the reclaimed water recycling device is powered on, the circulating pump is started to circularly purify and filter all the stored water in the pneumatic water tank, and the total starting purification time is not more than 2 minutes; when the stored water is not used for more than 12 hours, circularly purifying and filtering all the stored water in the pneumatic water tank;

the grey water storage tank (1) is provided with a grey water inlet, a tap water replenishing port (9) and an overflow discharge port (10), and a liquid level sensor (1-10), a high liquid level point and a low liquid level point are arranged in the grey water storage tank (1);

the grey water inlet of the grey water storage tank (1) is connected with a high-quality miscellaneous drainage water-using appliance of the previous floor through a grey water collecting pipeline;

the grey water collecting pipeline is provided with a hair filter (1-2), and the hair filter (1-2) is used for pre-filtering the grey water before entering the grey water storage tank (1);

a tap water replenishing port (9) of the grey water storage tank (1) is connected with a water supply vertical pipe (15) through a tap water replenishing pipe (1-9), and the tap water replenishing pipe (1-9) is provided with an automatic water replenishing valve (1-7) and/or a manual water replenishing valve (1-8);

the grey water treatment component (2) comprises a first-stage purification component (2-2), a second-stage purification component (2-3) and a third-stage purification component (2-4) which are connected in sequence;

the first-stage purification component (2-2) adopts PP cotton/coarse strainer for filtering large particles, non-dissolved metal oxides and broken hair in the grey water;

the second-stage purification component (2-3) adopts a modified granular activated carbon column and is used for filtering small-grain-size particles, organic pollutants, colorimetric substances and heavy metal ions in the grey water;

the third-stage purification component (2-4) adopts an internal pressure type ultrafiltration membrane and is used for intercepting turbidity substances, macromolecular organic matters, bacteria and partial viruses;

the grey water treatment component (2) also comprises a variable frequency pump (2-1), an ultrafiltration membrane backwashing pipe (2-7) and a backwashing electromagnetic valve (2-6);

the variable frequency pump (2-1) is used for pressurizing the grey water collected in the grey water storage tank (1) and then feeding the grey water into the first-stage purification component (2-2);

the ultrafiltration membrane backwashing pipe (2-7) is used for discharging impurities after backwashing of the ultrafiltration membrane and discharging the liquid after backwashing to the sewage vertical pipe (4);

the back-washing electromagnetic valve (2-6) is used for controlling the back-washing process of the ultrafiltration membrane.

2. The device for reusing reclaimed water in a public building room as claimed in claim 1, wherein an overflow discharge port (10) at the upper part of the grey water storage tank (1) is connected with the vertical sewage pipe (4) through an overflow pipe (1-3), and a drain outlet at the bottom of the grey water storage tank (1) is connected with the vertical sewage pipe (4) through an emptying pipe (1-4).

3. The device for reusing reclaimed water in a public building room as claimed in claim 2, wherein the emptying pipe (1-4) is provided with an emptying manual valve (1-5), and the sediment in the grey water collecting tank is discharged through the emptying pipe (1-4) by controlling the emptying manual valve (1-5).

4. The device for reusing reclaimed water in a public building room as claimed in claim 3, wherein the water outlet of the grey water storage tank (1) is connected with the water inlet of the grey water treatment assembly (2) through a first drainage pipe;

the first drainage pipe is provided with a control valve (1-6), and the control valve (1-6) is used for controlling the drainage pipe of the grey water storage tank (1) connected with the grey water treatment component (2) and metering the quantity of the grey water fed into the grey water treatment component (2).

5. The device for reusing reclaimed water in a public building room as claimed in claim 4, wherein the grey water treatment assembly (2) is connected with the reclaimed water pneumatic water tank assembly (3) through a second drain pipe;

and a check valve (2-5) is arranged on the second drain pipe, and the check valve (2-5) is used for preventing reclaimed water in the reclaimed water pneumatic water tank assembly (3) from being poured into the grey water treatment assembly (2).

6. The device for reusing reclaimed water in a public building room as claimed in claim 1, wherein the bottom surface of the grey water storage tank (1) is a slope surface, and the emptying pipe (1-4) is arranged along the slope direction of the slope surface.

7. An indoor reclaimed water recycling system for a public building, which is characterized by comprising a grey water collecting device, a tap water replenishing device, a reclaimed water recycling control system and the reclaimed water purifying and recycling device of any one of claims 1 to 6.