DE202024100547U1 - Portable water treatment system - Google Patents

Abstract

Portable drinking water treatment plant (1) for filling a section of a drinking water network (19) with purified water, comprising
- a frame (2),
- a UF filter unit (6) with an inlet (8) for water to be filtered and an outlet (9) for the filtered water,
- an inlet pipe (10) fluidically connected to the inlet (8) of the UF filter unit (6),
- a drain pipe (16) fluidically connected to the outlet (9) of the UF filter unit (6),
where
- the inlet piping (10) has an inlet coupling (11), in particular designed as a Storz coupling C, which can be connected to a hydrant or a standpipe (20), and
- the drain piping (16) has a drain coupling (17), in particular designed as a Storz coupling C, which can be connected to the drinking water network (19) to be filled.

Description

The present invention relates to a mobile drinking water treatment plant.

Mobile drinking water treatment plants are typically used to temporarily provide clean drinking water in exceptional situations, for example when the drinking water network is malfunctioning or contaminated with pathogens.

For this purpose, mobile drinking water treatment plants are kept by organizations such as the Federal Agency for Technical Relief (THW), brought to the site of operation and set up and operated there by trained specialists.

These mobile drinking water treatment plants are typically designed to produce drinking water from surface, ground or well water of uncertain quality. To do this, the raw water typically goes through pre-filtration, ultrafiltration and disinfection, in which a disinfectant (e.g. bleach) is added, before it is released as drinking water. In order to be able to pump the raw water (even without a natural gradient) to the drinking water treatment plant, such mobile drinking water treatment plants typically have pumps and generators to supply the pumps with energy and to control the water treatment process.

Since the raw water used can contain a high level of suspended and dirt particles, the filters of such mobile drinking water treatment systems can typically be cleaned by backwashing. To make this possible, drinking water treatment systems are equipped with backwashing devices that have complex fittings and piping.

In connection with the repair of pipe bursts or the laying of new drinking water pipelines, the sections of the drinking water pipeline that have been emptied in the meantime must be filled or refilled with filling water for a pressure test or for flushing purposes before they can be connected to the rest of the (pressurized) pipe network.

Often, water is temporarily taken from an (underground) hydrant or standpipe via hoses and fed directly into the drinking water network (section) to be filled as filling water. However, the hydrant or standpipe is often contaminated with microbiology (bacteria, microbes, turbidity, organic matter) (e.g. P. aeruginosa), which is introduced into the drinking water network section via the filling water during the initial or refilling of the section.

Theoretically, contamination of the drinking water network could be prevented by using the mobile drinking water treatment plants mentioned above.

In practice, however, this rarely or never happens, since the mobile drinking water treatment plants mentioned above are often unsuitable for use on a construction site: They are often oversized and therefore difficult to transport to the site and complicated to install and operate.

The present invention is based on the object of providing a mobile drinking water treatment plant which is specifically adapted to the application of (initial or re-)filling a section of a drinking water network with filling water and is characterized in this context by improved practical suitability, in particular with regard to transportability and simplicity of installation and operation.

This problem is solved by the portable drinking water treatment plant according to claim 1.

• - ein Rahmengestell,
• - eine UF-Filtereinheit mit einem Eintritt für zu filterndes Wasser und einem Austritt für das Filtrat (gefiltertes Wasser),
• - eine mit dem Eintritt der UF-Filtereinheit fluidisch verbundene Zulaufverrohrung,
• - eine mit dem Austritt der UF-Filtereinheit fluidisch verbundene Ablaufverrohrung,

wobei

• - die Zulaufverrohrung eine (insbesondere als Storz Kupplung C ausgeführte) Zulaufkupplung aufweist, die mit einem Hydranten oder einem Standrohr verbindbar ist, und
• - die Ablaufverrohrung eine (insbesondere als Storz Kupplung C ausgeführte) Ablaufkupplung aufweist, die mit dem zu befüllenden Trinkwassernetz verbindbar ist.

The portable drinking water treatment plant according to the invention for filling a section of a drinking water network with purified water comprises

• - a frame,
• - a UF filter unit with an inlet for water to be filtered and an outlet for the filtrate (filtered water),
• - an inlet pipe fluidically connected to the inlet of the UF filter unit,
• - a drain pipe fluidically connected to the outlet of the UF filter unit,

where

• - the inlet piping has an inlet coupling (in particular designed as a Storz coupling C) which can be connected to a hydrant or a standpipe, and
• - the drain piping has a drain coupling (in particular designed as a Storz coupling C) which can be connected to the drinking water network to be filled.

• - die Zulaufverrohrung ein Zulauf-Manometer, einen Durchflussregler, einen Druckminder und/oder einen Systemtrenner, welcher bzw. welches jeweils zwischen der Zulaufkupplung und dem Eintritt der UF-Filtereinheit angeordnet ist, und
• - die Ablaufverrohrung ein Ablauf-Manometer, welches zwischen der Ablaufkupplung und dem Austritt der UF-Filtereinheit angeordnet ist.

Advantageously,

• - the inlet piping, an inlet pressure gauge, a flow regulator, a pressure reducer and/or a system separator, which is arranged between the inlet coupling and the inlet of the UF filter unit, and
• - the drain piping a drain pressure gauge which is arranged between the drain coupling and the outlet of the UF filter unit.

Furthermore, according to an advantageous embodiment of the invention, the frame has two handles and/or four wheels.

• - die UF-Filtereinheit mindestens eine UF-Filtermembran aufweist,
• - die UF-Filtereinheit ein zylindrisches Gehäuse aufweist und das Gehäuses derart im Rahmengestell angeordnet ist, dass die Zylinderachse des Gehäuses im bestimmungsgemäßen Gebrauch liegend angeordnet ist.

A particularly robust and compact drinking water treatment plant can be realized if the

• - the UF filter unit has at least one UF filter membrane,
• - the UF filter unit has a cylindrical housing and the housing is arranged in the frame in such a way that the cylinder axis of the housing is arranged horizontally during normal use.

• - die Wasseraufbereitungsanlage abgesehen von der mindestens einen UF-Filtermembran der UF-Filtereinheit keine Vorrichtung zur Vorfiltration und/oder zur Desinfektion umfasst, und/oder
• - Filterrückstände aus der UF-Filtereinheit über die Zulaufverrohrung rückspülbar sind, indem ein Rückspülwasser während einer Rückspülphase über die Ablaufkupplung zur Zulaufkupplung leitbar ist.

A drinking water treatment plant that is particularly easy to install and operate can be realized if

• - the water treatment plant does not comprise any device for pre-filtration and/or disinfection apart from the at least one UF filter membrane of the UF filter unit, and/or
• - Filter residues from the UF filter unit can be backwashed via the inlet piping by directing backwash water via the outlet coupling to the inlet coupling during a backwash phase.

Furthermore, it can advantageously be provided that the drinking water treatment plant does not have a separate filter residue outlet.

The present invention is based on the finding that by consistently focusing on the intended application of the initial or refilling of a section of a drinking water network from a hydrant or standpipe with filling water, a drinking water treatment plant can be provided that is so compact and light that it can be carried to the site by 1 to 2 users, which significantly improves the practical applicability in the construction site context and thus surprisingly improves the practical suitability.

• Da das dem Hydranten bzw. Standrohr entnommene Rohwasser typischerweise keine nennenswerte Beladung mit groben Schwebstoffen aufweist, kann auf die Vorfiltration verzichtet werden.

The key here is the (optional) omission of components and facilities that are not absolutely necessary in connection with the intended use case:

• Since the raw water taken from the hydrant or standpipe typically does not contain any significant amounts of coarse suspended matter, pre-filtration is not necessary.

Since the raw water is typically under pressure when it is taken from the hydrant or standpipe, pumps and power generators to drive the pumps are not necessary.

Since no disinfection is carried out by adding a disinfectant, there is no need for equipment for dosing and adding it.

A separate backwash device with valves, fittings and pipes for flow reversal, which enables regular, interval-based backwashing of the filters during ongoing filter operation of the drinking water treatment plant, is also not necessary. This is because, due to the quality of the raw water, the section of the drinking water network can typically be completely filled with ultrafiltered (and therefore bacteria-free) filling water before the ultrafiltration filter is so loaded with filter residues that it becomes blocked and has to be cleaned. It makes sense to clean the ultrafilter not on site at the construction site, but after use on the construction site in a workshop environment, where qualified specialist personnel flush the filter residues out of the UF filter unit via the inlet piping, for example by directing backwash water via the outlet coupling to the inlet coupling during the backwash phase. A separate filter residue outlet is therefore not absolutely necessary.

Ultrafiltration (UF) is understood here as a filtration process from the field of membrane technology in which the exclusion limit is below 100 nm.

• 1 eine tragbare Trinkwasseraufbereitungsanlage in einer perspektivischen Schrägansicht, und
• 2 eine grob schematische Darstellung einer tragbaren Trinkwasseraufbereitungsanlage bei der Erstbefüllung eines Abschnitts eines Trinkwassernetzes.

The present invention is explained in more detail below using two exemplary embodiments.

• 1 a portable drinking water treatment plant in a perspective oblique view, and
• 2 a rough schematic representation of a portable drinking water treatment plant during the initial filling of a section of a drinking water network.

1 shows a first embodiment of a drinking water treatment plant 1 according to the invention. The drinking water treatment plant 1 comprises a cuboid-shaped frame 2 made of aluminum profiles 3, 3L, 3Q. The underside of the frame 2 is spanned by four (aluminum) longitudinal profiles 3L and two (aluminum) transverse profiles 3Q.

Handles 4 are attached to two opposite sides of the frame 2, by which the drinking water treatment system 1 can be grasped, carried and/or moved by users. Rollers 5 are attached to four corners of the frame 2, which enable the drinking water treatment system 1 to be easily moved.

A UF filter unit 6 with a cylindrical housing 7 is arranged horizontally within the frame 2. The cylinder axis of the housing 7 is in normal operation (i.e. in the 1 shown orientation of the drinking water treatment plant 1). On opposite end faces 7S of the cylindrical housing 7, the UF filter unit 6 has an inlet 8 for the (raw) water to be filtered and an outlet 9 for the filtered (fill) water or filtrate.

An inlet pipe 10 is fluidically connected to the inlet 8 of the UF filter unit 6 and has an inlet coupling 11 (designed as a Storz coupling C) at its free end. A system separator 12, a pressure reducer 13, a flow regulator 14 and an inlet pressure gauge 15 are arranged between the inlet coupling 11 and the inlet 8 of the UF filter unit 6.

A drain pipe 16 is fluidically connected to the outlet 9 of the UF filter unit 6, which also has a drain coupling 17 (designed as a Storz coupling C) at its free end. A drain pressure gauge 18 is arranged between the drain coupling 17 and the outlet 9 of the UF filter unit 6.

2 shows a roughly schematic representation of a portable drinking water treatment plant 1 according to the invention during the initial filling of a section of a drinking water network 19 with filling water.

Shown are a standpipe 20, the drinking water treatment plant 1 and three sections 19.1, 19.2, 19.3 of a drinking water network 19, which are fluidically separated from one another by two closed gate valves 21. The section 19.2 of the drinking water network 19, which is blocked off by the two closed gate valves 21, has been emptied and is now to be refilled with filling water via a filling water valve 23 before it is connected to the other two pressurized sections 19.1, 19.3 of the drinking water network 19.

For this purpose, raw water is taken from the standpipe 20 and fed to the drinking water treatment plant 1 via a first hose 24 via the inlet coupling 11. The raw water passes through the UF filter unit 6 of the drinking water treatment plant 1 and is cleaned of microbiology and suspended matter. The cleaned water leaves the drinking water treatment plant 1 via the outlet coupling 17 and is fed via a second hose 25 via the filling water valve 23 to the section 19.2 of the drinking water network 19 to be filled. After the desired pressure has been reached in the section 19.2 of the drinking water network 19 to be filled, the filling water valve 23 is closed and the two gate valves 21 are opened so that a fluidic connection is (again) established between all three sections 19.1, 19.2, 19.3 of the drinking water network 19.

List of reference symbols

1

Drinking water treatment plant

2

Frame

3

Aluminium profiles

3L

Longitudinal profiles

3Q

Cross sections

4

Handle

5

role

6

UF filter unit

7

Housing

7S

Front sides of the cylindrical housing

8th

Entry of the UF filter unit

9

Outlet of the UF filter unit

10

Inlet piping

11

Inlet coupling

12

System separator

13

Pressure reducer

14

Flow regulator

15

Inlet pressure gauge

16

Drain piping

17

Drain coupling

18

Drain pressure gauge

19

Drinking water network

20

Standpipe

19.1, 19.2, 19.3

Sections

21

Gate valve

23

Fill water valve

24

first hose

25

second hose

Claims (8)

Portable drinking water treatment system (1) for filling a section of a drinking water network (19) with purified water, comprising - a frame (2), - a UF filter unit (6) with an inlet (8) for water to be filtered and an outlet (9) for the filtered water, - an inlet pipe (10) fluidically connected to the inlet (8) of the UF filter unit (6), - an outlet pipe (16) fluidically connected to the outlet (9) of the UF filter unit (6), wherein - the inlet pipe (10) has an inlet coupling (11), in particular designed as a Storz coupling C, which can be connected to a hydrant or a standpipe (20), and - the outlet pipe (16) has an outlet coupling (17), in particular designed as a Storz coupling C, which can be connected to the drinking water network (19) to be filled. Portable drinking water treatment plant (1) according to Claim 1 , wherein the inlet piping comprises an inlet pressure gauge, a flow regulator, a pressure reducer and/or a system separator, each of which is arranged between the inlet coupling and the inlet of the UF filter unit. Portable drinking water treatment plant (1) according to one of the preceding claims, wherein the drain piping (16) comprises a drain pressure gauge (18) which is arranged between the drain coupling (17) and the outlet (9) of the UF filter unit. Portable drinking water treatment plant (1) according to one of the preceding claims, wherein the frame (2) has handles (4) and/or wheels (5). Portable drinking water treatment system (1) according to one of the preceding claims, wherein - the UF filter unit (6) has at least one UF filter membrane, and - the UF filter unit (6) has a cylindrical housing (7) and the housing (7) is arranged in the frame (2) such that the cylinder axis of the housing (7) is arranged horizontally during normal use. Portable drinking water treatment plant (1) according to Claim 5 , wherein the drinking water treatment plant does not comprise any device for pre-filtration and/or disinfection apart from the at least one UF filter membrane of the UF filter unit (6). Portable drinking water treatment plant (1) according to one of the preceding claims, wherein filter residues from the UF filter unit (6) can be backwashed via the inlet piping (10) by conducting backwash water via the outlet coupling (17) to the inlet coupling (11) during a backwash phase. Portable drinking water treatment plant (1) according to Claim 7 , wherein the drinking water treatment plant (1) does not have a separate filter residue outlet.

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