JPH0628237Y2 - Water supply system for drinking water - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention relates to a water supply device for drinking water, and more specifically for drinking water installed in a building or attached to a building at the expense of the user. Regarding water supply equipment.

<Conventional technology> In buildings of a certain scale or larger, water is received by a water tank, and this is pumped to an elevated water tank, which then supplies water to each water faucet.

The treatment methods at the water purification plant are roughly classified into a slow filtration method and a rapid filtration method. In the slow filtration method, if the amount of microorganisms and the amount of oxygen in water are insufficient compared with the amount of treated water, the treatment capacity will be lost, and it will not be effective because it will interfere with coloring components such as humic substances generated by biodegradation. Therefore, the recent clean water is generally treated by the rapid filtration method. As a result, there are many cases where an offensive odor such as a musty odor or a chlorine odor is felt.

<Problems to be solved by the invention> That is, since slow filtration requires a large area, rapid filtration is adopted, but since it is insufficient in bacteriological safety, chlorine sterilization is used. The chlorine concentration increases, and it is almost impossible to remove ammonia nitrogen, odorous manganese, and ABS (LAS) as a detergent component. With the recent pollution of raw water, the amount of coagulant added has increased. It has come to be called "water" or "dangerous water".

On the other hand, the water purifier used in the building had only a small device called "water purifier" that was directly connected to the faucet. In general, this device has a poor drainage rate, the processing accuracy decreases as the usage period becomes long, and the management for maintaining the original function is left to each house, which is a hindrance to the sink.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a drinking water supply device having a water purification function on a building scale.

<Means for Solving the Problems> In order to achieve the above object, the drinking water supply device of the present invention is divided into a drinking water supply channel and a water supply channel after the receiving tank whose water source is The water purifier installed in the water supply path used is an activated carbon adsorption device that can be easily replaced, a mineral addition tank, an ultrafiltration membrane (UF membrane) with a pre-stage filter, and a disinfection tank at the last stage. A disinfection facility with a water supply pipe from the disinfection facility is configured as a circulation path that passes through a required location, and a water supply pipe is used to supply water to a faucet for drinking water, and a UF membrane is passed through the disinfection tank. Is attached.

《Action》 Only the water used for beverages in the water storage tank is sent to the activated carbon adsorption device, and after the residual chlorine and organic substances in the water are adsorbed by the activated carbon adsorption device, the water passed through this activated carbon adsorption device is further After adding minerals, it is further filtered through a UF membrane to remove various bacteria and pathogenic bacteria, and then residual chlorine and the like are retained in a disinfection facility. Since this is circulated to another UF membrane, the drinking water that passes through the water pipe on the faucet side also returns to the disinfection facility.
It suppresses the generation of microorganisms and other bacteria. There is a pre-stage filter on the way from the mineral addition tank to the UF membrane, which stops coarse foreign substances here to protect the UF membrane and extend its service life.

<< Embodiment >> Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

The structure is shown in FIG. An elevated water tank 2 dedicated to drinking water is provided in the uppermost layer of the building 1, and a water supply pipe is connected from this water tank 2 to each dedicated drinking water faucet 3 in the building 1.

A water purification device 5 is provided between the water receiving tank 4 that receives clean water supplied from the water supply company and the elevated water tank 2.

In order to downsize the water purifier 5, the amount of treated water is reduced as much as possible. Therefore, the water supply channel that is sent from the water receiving tank 4 to the water purifying device 5 branches into drinking water and water used for other purposes, and is limited to drinking water only.

The water purification device 5 is composed of an activated carbon adsorption device 6 which is easily exchangeable into a cartridge, a mineral addition tank 8, a UF membrane 9 having a prefilter 7, and a chlorine addition device 10 provided with a treated water tank. From the water,
To process. That is, the water from the water receiving tank 4 is activated carbon adsorption device 6
to go into. The clean water once stored in the water receiving tank 4 may be adsorbed by activated carbon, although organic substances and ammonia may increase due to the growth action of microorganisms therein.

Minerals suitable for the human body are artificially added to the water treated by the activated carbon adsorbing device 6 in the mineral addition tank 8, and this is further passed through a UF membrane 9 (ultrafiltration membrane) with a prefilter 7, and this UF Elevated aquarium 2 to remove miscellaneous bacteria and pathogenic bacteria with a membrane
First, water is sent through the chlorine addition device 10.

The chlorine addition device 10 is not limited to this, and may be bleaching powder or sodium hypochlorite that is usually used for clean water as a disinfectant.

The pre-filter 7 in the preceding stage of the UF membrane 9 has coarser eyes than the UF membrane 9, and thereby removes large bacteria and foreign matters in advance to prevent early clogging of the UF membrane 9.

The drinking water finally treated by the chlorine adding device 10 may be stored in a fixed amount in the chlorine adding device 10 and directly fed to the dedicated drinking water faucet 3 from this, but in this embodiment, the elevated water tank 2 is used. The water supply pipe 11 passes through the chlorine addition device 10-the elevated water tank 2-faucet 3 and returns to the treatment tank of the chlorine addition device 10.

That is, the treated water in the chlorine addition device 10 circulates through the water supply pipe 11, and the water in the elevated water tank 2 is constantly replaced little by little. On the other hand, the treated water in the chlorine addition device 10 is constantly circulated so as to pass through another UF membrane 12 to suppress the generation of bacteria and the like in the chlorine addition device 10.

<< Effect >> As described in detail above, the water supply device of the present invention separates washing water, wash water and drinking water, and passes only the drinking water through the water purification device, so that the water purification device itself can be made relatively small. In addition, since it has an activated carbon adsorption device, it removes musty odors and chlorine odors, and uses an ultrafiltration membrane to remove organic substances, microorganisms, and other bacteria that have remained in tap water and have grown in the water receiving membrane. It is possible to physically remove iron mixed with rust in the water supply pipe.

Since the faucet for drinking water is also dedicated, it is easy to maintain the unique state of drinking water without interference of the pipeline between the drinking water and other water.

In addition, "delicious water" is added by the mineral addition tank, protection and longevity of the UF membrane by the pre-filter, water in the fire fighting equipment is circulated through the UF membrane to prevent germs in the disinfection equipment, and disinfection equipment The treated drinking water circulates in the water supply pipe that returns from the tap through the tap for drinking water to prevent deterioration of water quality due to retention.

In addition, since the activated carbon adsorption device, mineral addition device, and UF membrane are used as a single unit that can be easily replaced, proper management is easy and daily management by the administrator is possible, while maintaining the function of the water supply device. The effect is that drinking water from apartments and high-rise buildings can be collectively treated at one place.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a drinking water supply device according to the present invention. 1 ... Building, 2 ... Elevated water tank 3 ... Drinking water faucet, 4 ... Water receiving tank 5 ... Water purification device, 6 ... Activated carbon adsorption device 7 ... Prefilter, 8 ... Mineral addition tank 9 ... UF membrane, 10 …… chlorine addition device 11 …… water supply pipe, 12 …… UF membrane

Claims (1)

[Scope of utility model registration request] 1. A water purification apparatus installed in a water supply path used for beverages by dividing a water supply path after a water receiving tank using water supply as a water source into a water supply path used for drinks. , A mineral addition tank, and an ultrafiltration membrane (UF membrane) with a pre-stage filter are sequentially arranged, and a disinfection equipment having a disinfection tank is installed at the last stage, and the water supply pipe from the disinfection equipment is in a circulation path passing through the required place. A water supply device for drinking water, characterized in that the water supply pipe is used to supply water to a faucet for drinking water, and the disinfection tank is provided with a circulation path through which a UF membrane is passed.