Scattered direct drinking water system for ozone disinfection and backwater treatment

Abstract

The utility model discloses a dispersedly arranged direct drinking water system for ozone disinfection and backwater treatment. The dispersedly arranged direct drinking water system comprises a centralized pretreatment and membrane treatment subsystem, a relay type pressurization water supply subsystem and more than two dispersedly disinfection and backwater treatment subsystems, the distributed disinfection and backwater treatment subsystem comprises an ozone disinfection water tank, a water incoming branch, an ozone generator, an ozone circulation disinfection branch, a water supply booster pump set, a user pipe network, a backwater branch, a gas-liquid mixing branch and an ozone destructor. According to the utility model, the finished water tank is independently arranged for each building, so that finished direct drinking water can be stored in the water trough stage, and the water treatment load of a centralized pretreatment and membrane treatment subsystem is greatly reduced; the water return pipeline is connected with the adjacent finished product water tank, so that the length of the water return pipeline is greatly reduced, and energy required by backflow of finished product water retained in the pipeline is reduced; and the ozone circulating disinfection branch, the incoming water branch and the backwater branch share one set of ozone water mixing device, so that the arrangement of disinfection equipment is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of water treatment, especially direct drinking water device. BACKGROUND

[0002] For the centralized water treatment direct drinking water system of the campus, public building, residential area of larger area, the prior art often adopts the form of centralized arrangement of all water treatment systems, and the defects of the technical scheme are that, since the finished product water after treatment is required not to stay in the pipeline for more than 12 hours, all the pipelines can be connected to make the finished product water flow back to the centralized water treatment equipment area, which causes the pipeline to be too long and the initial investment to be large, and at the same time, in order to ensure that the finished product water staying for too long can flow back to the centralized water treatment equipment area, higher energy consumption is also required, and the daily operation cost is high. UTILITY MODEL CONTENTS

[0003] In order to overcome the above defects, the purpose of the utility model is to provide a direct drinking water system of ozone disinfection and backwater treatment of dispersed arrangement, comprising: centralized pretreatment and membrane treatment subsystem, relay type booster water supply subsystem, two or more than two dispersed disinfection and backwater treatment subsystems;

[0004] The relay type booster water supply subsystem comprises two or more than two relay booster pump groups connected by pipelines from near to far;

[0005] The water outlet end of the relay booster pump group is provided with a pressure sensor;

[0006] The centralized pretreatment and membrane treatment subsystem is provided with a semi-finished product water tank at the end;

[0007] The water outlet end of the semi-finished product water tank is connected to the water inlet end of the nearest relay booster pump group by a pipeline;

[0008] The dispersed disinfection and backwater treatment subsystem comprises an ozone disinfection water tank, a water inlet branch, an ozone generator, an ozone circulating disinfection branch, a water supply booster pump group, a user pipe network, a backwater branch, a gas-liquid mixing branch and an ozone destroyer;

[0009] The water inlet end of the water inlet branch is connected to the water outlet pipeline of the relay booster pump group at the front end of the water inlet branch;

[0010] The water inlet branch is provided with an electric valve and a check valve in sequence along the water flow direction;

[0011] The ozone disinfection water tank, the water supply booster pump group, the user pipe network and the backwater branch are connected in sequence by pipelines;

[0012] The water inlet end of the ozone circulating disinfection branch is connected to the water outlet pipeline of the ozone disinfection water tank, and the ozone circulating disinfection branch is provided with a booster pump and a check valve in sequence along the water flow direction;

[0013] The water outlet end of the water supply booster pump group is provided with the pressure sensor;

[0014] The water return branch is sequentially provided with the electric valve, the pressure reducing valve, the precision filter and the check valve along the water flow direction;

[0015] The gas-liquid mixing branch extends from the outside of the top of the ozone disinfection water tank to the inside;

[0016] The water inlet branch, the ozone circulation disinfection branch and the water outlet end of the water return branch are connected to the water inlet end of the gas-liquid mixing branch;

[0017] The gas-liquid mixing branch is provided with a flow meter outside the ozone disinfection water tank and sequentially provided with a jetifier and the check valve along the water flow direction inside;

[0018] The ozone generator pipeline is connected to the gas inlet of the jetifier;

[0019] The ozone destroyer pipeline is connected to the top gas outlet of the ozone disinfection water tank.

[0020] Preferably, the centralized pretreatment and membrane treatment subsystem comprises sequentially connected raw water inlet pipeline, raw water tank, sand filter, carbon filter, ion exchanger, micron filter, nanofilter and semi-finished product water tank;

[0021] The booster pump is arranged at the connecting pipeline between the raw water tank and the sand filter;

[0022] The booster pump is arranged at the connecting pipeline between the micron filter and the nanofilter;

[0023] The flow meter and the check valve are sequentially arranged along the water flow direction at the connecting pipeline between the nanofilter and the semi-finished product water tank.

[0024] The relay type booster water supply subsystem can sequentially fill the finished product water tank (i.e. the ozone disinfection water tank) with water from far to near, and since the finished product water tank is arranged for each building, the direct drinking water can be stored in the water trough stage, so that the water treatment load of the centralized pretreatment and membrane treatment subsystem is greatly reduced; the water return pipeline is connected to the adjacent finished product water tank, so that the length of the water return pipeline is greatly reduced, and the energy required for the retention of the finished product water backflow in the pipeline is reduced; the ozone circulation disinfection branch is used for disinfecting the microorganisms caused by the long storage time of the finished product water in the finished product water tank; the ozone circulation disinfection branch, the water inlet branch and the water return branch share one set of ozone mixing device, so that the setting of the disinfection equipment is simplified; the disinfection of the water to be treated is completed in the user pipe network, and the potential pollution risk caused by the long water supply pipeline is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, of which:

[0026] Figure 1 Figure 1 is a schematic diagram of a direct drinking water system with ozone disinfection and backwater treatment in a decentralized arrangement according to the present application;

[0027] In the figure, the centralized pretreatment and membrane treatment subsystem-1, raw water inlet pipeline-11, raw water tank-12, sand filter-13, carbon filter-14, ion exchanger-15, micron filter-16, nanofilter-17, semi-finished water tank-18, relay type booster water supply subsystem-2, relay booster pump set-21, decentralized disinfection and backwater treatment subsystem-3, ozone disinfection water tank-31, water inlet branch-32, ozone generator-33, ozone circulation disinfection branch-34, water supply booster pump set-35, user pipe network-36, backwater branch-37, pressure reducing valve-371, precision filter-372, gas-liquid mixing branch-38, fluidic device-381, ozone destroyer-39, booster pump-a, flow meter-b, check valve-c, pressure sensor-d, electric valve-e. DETAILED DESCRIPTION

[0028] The present application will be described in more detail with reference to the accompanying drawings, wherein preferred embodiments of the present application are shown. It should be understood that modifications can be made to the present application as described herein without departing from the spirit and scope of the present application, which can be appreciated by those skilled in the art. Therefore, the following description should be understood not as a limitation of the present application but as a broad disclosure to a skilled person in the art.

[0029] As shown in Figure 1, the present application comprises a centralized pretreatment and membrane treatment subsystem 1, a relay type booster water supply subsystem 2, and two or more decentralized disinfection and backwater treatment subsystems 3. Figure 1

[0030] A direct drinking water system with ozone disinfection and backwater treatment in a decentralized arrangement, comprising: a centralized pretreatment and membrane treatment subsystem 1, a relay type booster water supply subsystem 2, and two or more decentralized disinfection and backwater treatment subsystems 3.

[0031] The relay type booster water supply subsystem 2 comprises two or more relay booster pump sets 21 connected by pipeline from near to far.

[0032] The water outlet end of the relay booster pump set 21 is provided with a pressure sensor d.

[0033] The end of the centralized pretreatment and membrane treatment subsystem 1 is provided with a semi-finished water tank 18.

[0034] The water outlet end of the semi-finished water tank 18 is connected to the water inlet end of the nearest relay booster pump set 21 by pipeline.

[0035] ​The decentralized disinfection and backwater treatment subsystem 3 includes an ozone disinfection water tank 31, a water inlet branch 32, an ozone generator 33, an ozone circulation disinfection branch 34, a water supply booster pump set 35, a user pipe network 36, a backwater branch 37, a gas-liquid mixing branch 38, and an ozone destroyer 39.

[0036] The water inlet end of the water inlet branch 32 is connected to the outlet pipeline of the relay booster pump set 21 at the front end of the water inlet branch;

[0037] The water inlet branch 32 is sequentially provided with an electric valve e and a check valve c along the water flow direction;

[0038] The ozone disinfection water tank 31, the water supply booster pump set 35, the user pipe network 36, and the backwater branch 37 are sequentially connected by pipelines;

[0039] The ozone circulation disinfection branch 34 is connected to the outlet pipeline of the ozone disinfection water tank 31 at the water inlet end, and is sequentially provided with a booster pump a and a check valve c along the water flow direction;

[0040] The water outlet end of the water supply booster pump set 35 is provided with a pressure sensor d;

[0041] The backwater branch 37 is sequentially provided with an electric valve e, a pressure reducing valve 371, a precision filter 372, and a check valve c along the water flow direction;

[0042] The gas-liquid mixing branch 38 extends from the outside to the inside of the top of the ozone disinfection water tank 31;

[0043] The water outlet ends of the water inlet branch 32, the ozone circulation disinfection branch 34, and the backwater branch 37 are connected to the water inlet end of the gas-liquid mixing branch 38;

[0044] The gas-liquid mixing branch 38 is provided with a flow meter b on the outside of the ozone disinfection water tank 31, and is sequentially provided with a fluidic device 381 and a check valve c along the water flow direction on the inside;

[0045] The ozone generator 33 is connected to the gas inlet of the fluidic device 381 by a pipeline;

[0046] The ozone destroyer 39 is connected to the top gas outlet of the ozone disinfection water tank 31 by a pipeline.

[0047] Further, the centralized pretreatment and membrane treatment subsystem 1 includes a raw water inlet pipeline 11, a raw water tank 12, a sand filter 13, a carbon filter 14, an ion exchanger 15, a micron filter 16, a nanofilter 17, and a semi-finished product water tank 18, which are sequentially connected by pipelines;

[0048] A booster pump a is arranged at the connection pipeline between the raw water tank 12 and the sand filter 13;

[0049] A booster pump a is arranged at the connection pipeline between the micron filter 16 and the nanofilter 17;

[0050] The connecting pipeline of the nanofilter 17 and the semi-finished product water tank 18 is sequentially provided with a flow meter b and a check valve c in the water flow direction. The utility model is described in detail through the above examples, but the content is only the preferred embodiment of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent changes and improvements made within the scope of the utility model application shall still belong to the patent coverage range of the utility model.

Claims

1. A direct drinking water system with ozone disinfection and backwater treatment in a decentralized arrangement, characterized in that, The application relates to a centralized pretreatment and membrane treatment subsystem (1), a relay type pressurized water supply subsystem (2) and two or more decentralized disinfection and backwater treatment subsystems (3). The relay type pressurized water supply subsystem (2) comprises two or more relay type pressurized pump groups (21) which are sequentially connected by pipelines from near to far. The water outlet end of the relay type pressurized pump group (21) is provided with a pressure sensor (d). The centralized pretreatment and membrane treatment subsystem (1) is provided with a semi-finished product water tank (18) at the tail end. The water outlet end of the semi-finished product water tank (18) is connected to the water inlet end of the closest relay type pressurized pump group (21) by a pipeline. The decentralized disinfection and backwater treatment subsystem (3) comprises an ozone disinfection water tank (31), a water inlet branch (32), an ozone generator (33), an ozone circulating disinfection branch (34), a water supply pressurized pump group (35), a user pipe network (36), a backwater branch (37), a gas-liquid mixing branch (38) and an ozone destroyer (39). The water inlet end of the water inlet branch (32) is connected to the water outlet pipeline of the relay type pressurized pump group (21) at the front end of the water inlet branch. The water inlet branch (32) is sequentially provided with an electric valve (e) and a check valve (c) along the water flow direction. The ozone disinfection water tank (31), the water supply pressurized pump group (35), the user pipe network (36) and the backwater branch (37) are sequentially connected by pipelines. The water inlet end of the ozone circulating disinfection branch (34) is connected to the water outlet pipeline of the ozone disinfection water tank (31), and the ozone circulating disinfection branch is sequentially provided with a pressurized pump (a) and a check valve (c) along the water flow direction. The water outlet end of the water supply pressurized pump group (35) is provided with the pressure sensor (d). The backwater branch (37) is sequentially provided with the electric valve (e), a pressure reducing valve (371), a precision filter (372) and the check valve (c) along the water flow direction. The gas-liquid mixing branch (38) extends from the outside to the inside of the top of the ozone disinfection water tank (31). The water outlet ends of the water inlet branch (32), the ozone circulating disinfection branch (34) and the backwater branch (37) are connected to the water inlet end of the gas-liquid mixing branch (38). The gas-liquid mixing branch (38) is provided with a flowmeter (b) on the outside of the ozone disinfection water tank (31), and is sequentially provided with an ejector (381) and the check valve (c) along the water flow direction on the inside. The ozone generator (33) is connected to the gas inlet of the ejector (381) by a pipeline. The ozone destroyer (39) is connected to the top gas outlet of the ozone disinfection water tank (31) by a pipeline. The centralized pretreatment and membrane treatment subsystem (1) comprises a raw water inlet pipeline (11), a raw water tank (12), a sand filter (13), a carbon filter (14), an ion exchanger (15), a micrometer filter (16), a nanometer filter (17) and a semi-finished product water tank (18) which are sequentially connected by pipelines.

2. The decentralized ozone disinfection and backwash treatment direct drinking water system according to claim 1, characterized in that, The pressurized pump (a) is arranged at the connecting pipeline between the raw water tank (12) and the sand filter (13). ​ The booster pump (a) is arranged at the connecting pipeline between the micro-filter (16) and the nan-filter (17); The flow meter (b) and the check valve (c) are arranged in sequence along the water flow direction at the connecting pipeline between the nan-filter (17) and the semi-finished product water tank (18).

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