RU2364912C2 - Water-purifying system for control of biocides discharge in water - Google Patents

Abstract

FIELD: physics; guidance.

SUBSTANCE: invention concerns water-purifying systems and can be used for regulation of biocides discharge in water. The system contains a radiant of raw water, a clearing unit for biocides discharge, a tank, regulating rate of flux and executed with possibility of discharge the demanded volume of streaming water and containing, at least, one inlet hole for water inflow from a radiant in the tank is presented. The siphon drain valve joined to the tank regulating the rate of flux and executed with possibility of regulation of the rate of flux of water from this tank and having a final hole for water which is related to a clearing knot for biocides discharge with possibility of regulation of water stay period in a clearing unit for biocides discharge.

EFFECT: regulation of water-discharged biocides in water-purifying systems, especially in water purification devices under gravity, intended for water treating for household consumption.

4 cl, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to a water treatment system for controlling the release of biocides into water containing a source of untreated water, a treatment unit for isolating biocides into water, a flow regulator for the controlled release of fluids by gravity. Water treatment systems are combined with purification systems, such as biocidal exhaust systems (e.g., halogenated resins or chlorine tablets), which require controlled contact of the active substances during the fluid purification process.

State of the art

Water purification systems of the above type require treatment of the fluid passed by gravity through the treatment unit in order to contact the flowing fluid with the used substances for treating the fluid. There is a need for gravity control in such systems to achieve efficient processing and cleaning.

US Pat. No. 4,584,106 describes a chlorination system that distributes chlorine as an active substance in a hot tub or tub of mineral water. This system controls the flow of water through the mixing chamber using a valve or shut-off valve to control the rate of chlorine distribution. The venturi and deflector plate assembly also controls the flow of water through the mixing chamber and controls the particle size of the chlorination tablets that will exit the chlorination system.

US Pat. No. 5,089,127 describes a dispenser for dispensing chemicals, including a cylinder for enclosing a canister therein containing a collection of cumulative solid disinfecting elements in the form of granules or tablets, for example calcium hypochlorite or chlorisocyanurate. The bottom and lower end of the side wall of the canister are perforated, and the lower end part of the canister is inside the upper part of the open upper inlet or erosion tank. Water in the form of a jet enters the lower end of the erosion tank through the inlet and passes upward, coming into contact with solid disinfecting elements in the lower end of the canister and gradually eroding and dissolving the solid disinfecting elements in the lower end of the canister. The amount of chemical reagents supplied to the water passing through the dispenser is controlled by changing the inlet flow rate of the water falling on the elements in the lower end of the canister. In this system, an inlet control valve is installed in the inlet pipe to control the flow rate of the inlet water into the tank with disinfecting elements.

US Pat. No. 6298871 B1 describes a dispenser for dispensing chemicals that dispenses a solution of a chemical cleansing agent such as sodium hypochlorite. The dispenser comprises a housing and an elongated vertical hollow container located centrally inside the cavity. The lower wall of the side wall of the container is located next to the base and contains a set of perforations in the lower part of the side wall, which is separated from the inner wall of the housing. Inside the container is enclosed at least one hollow canister having a plurality of perforation holes in its base, and the lower part of its side wall is enclosed for sliding inside the container.

Pipes are provided for supplying a liquid in which a chemical cleaning agent is supplied to the canister, and for removing a stream of said liquid containing a chemical cleaning substance from the dispenser.

The problem with accessories such as venturi tubes and deflectors is that they require regular manual intervention and do not provide uniform flow control. On the other hand, more complex control mechanisms, such as systems with electronic, electric, pneumatic or hydraulic drives, may be more reliable, but they are expensive to manufacture and maintain.

Object of the invention

The objective of the present invention is to develop a water treatment system with a flow regulator to provide controlled flow of liquids by gravity - regardless of the height or volume of the source, which is simple and efficient, and the flow regulator does not suffer from uneven regulation, sudden changes in flow characteristics or turbulence, but also does not create complexity during installation and maintenance.

The flow regulator according to the invention can be made with the possibility of convenient mounting or mounting on any means of supply or source, for example on containers supplying water by gravity.

The flow regulator according to the invention provides a controlled release of fluid by gravity and can be configured to be used in conjunction with any conventional gravity-based cleaning systems, especially those that require controlled contact or residence time for purification and filtration, for example, biocidal outlets nodes. This ensures the regulation of contact with the cleaning active substances or the release of such substances, for example biocides, to maintain uniform water purification and to prevent problems of insufficient purification or excessive loading of the active substance in the purified water.

The flow regulator according to the invention does not require complex adjustable valves or shut-off valves with electric, electronic, pneumatic or hydraulic actuators, and also does not require repeated manual intervention.

The flow regulator according to the invention is simple and compact, providing readiness for assembly in any systems involving gravity, and does not suffer from problems of clogging or interruption of the fluid flow or complexity of maintenance.

Summary of the invention

The present invention provides a water treatment system with a flow regulator for creating a controlled gravity flow of fluid containing

a flow control tank configured to drain a desired volume of fluid and comprising at least one inlet for receiving water from a source,

one siphon drain associated with a flow control tank configured to control the flow of fluid from the tank and having a water outlet that is connected to the treatment unit.

In the flow regulator according to the invention, the flow rate is controlled, first of all, by means of a selectable size of the control tank, which ensures the achievement of the first stage of flow control regardless of the flow rate or volume of the fluid source. In addition, flow control is achieved by a siphon drain, which preferably comprises a tubular element of pre-selected sizes to facilitate regulation of the flow of water from the tank.

In a more preferred embodiment, the siphon drain is an inverted U or V shaped tubular element having two arms, one end of which is an inlet end and the other end is an outlet end, with the inlet end being at a higher level and protrudes into the control tank at the bottom of the tank, and the outlet end is lower than the inlet end to maintain a height difference between the inlet and outlet ends of the tubular element.

By adjusting the dimensions of the inner diameter of the tubular element, as well as the difference in height between its inlet and outlet ends, it is possible to control the flow of fluid through a siphon drain. This can be achieved using a tubular element in the form of an inverted letter "U" or "V", while the inlet and outlet ends are at the respective ends of the tubular element, and the shoulder of the tubular element having an inlet end is shorter than the length of a shoulder having an outlet end .

To achieve a controlled flow rate of 10-200 ml / min, the capacity of the control tank can be selected as 50-500 ml, and the tubular siphon drain can have a diameter in the range of 0.5-50 mm with a height difference between the inlet and outlet ends of the tubular siphon drain component from 1 to 200 mm.

In addition, given that the resistance introduced by the tubular siphon drain is also related to the flow rate, the material of the tubular siphon drain should be selected based on the desired flow rate. Preferred materials are glass, plastic, polymer, ceramic or metal.

The flow regulator according to the invention may be a combination of individual control tanks. In this case, each tank is equipped with an independent siphon drain to provide a controlled flow of fluid from the respective control tanks.

In a preferred embodiment, the sole or each control tank is equipped with a ventilation hole configured to equalize the air pressure inside and outside the tank after each fluid outlet, and also with the guarantee of reliable operation of the adjustable siphon drain. Accordingly, such ventilation can be provided in the opening of the inlet of the tank into which the fluid enters.

The flow regulator according to the invention can be integrated in gravity feed systems, such as gravity-fed water treatment systems, in which a controlled flow of water through various substances is desirable for effective water treatment.

Accordingly, the present invention also provides a water treatment system comprising a source of untreated water,

a flow control system associated with the source, comprising a flow control tank configured to discharge a desired volume of fluid, and comprising at least one inlet for supplying water from the source to the tank and one siphon drain associated with the flow control tank and made with the possibility of regulating the flow of fluid from the tank, and at least one outlet for discharging water from the siphon drain and

a fluid treatment unit that is connected to an outlet.

The cleaning unit typically contains any conventional cleaning agent in the form of a powder, granules, resin or tablets. Preferred cleansing agents include pentaiodide resin and trichlorocyanuric acid (TCCA). Other common chlorine-releasing compounds may also be used, such as potassium dichloroisocyanurate, sodium dichloroisocyanurate, sodium chlorosodium phosphate, calcium hypochlorite, lithium hypochlorite, mnochloramine, dichloramine, [(monotrichlor) -tetra (monocachalic dichloro)] pentaisocyan -dimethylidanotone, paratoluene sulfodichloramide, trichloromelamine, N-chloramine, N-chlorosuccinimide, N, N'-dichlorazodiacarbonamide, N'-chloroacetyl-urea, N'-dichlorazodiacarbonamide, N-chloroacetyl-urea diamide, N, chloroacetamide, mixtures.

In a preferred embodiment, the treatment unit comprises a biocide supply unit coupled to a siphon drain outlet, so that a controlled fluid flow comes into contact with the biocide to effect controlled cleaning.

In a preferred embodiment, the treatment unit also contains a mechanism for the controlled release of biocide-treated fluid, and in a more preferred embodiment, for the controlled release of biocide-treated fluid into a downstream containment chamber and then through a waste absorption system (to remove residual contaminants impurities) for final collection in the lower chamber as a treated fluid that can be drained from the outlet of the lower chamber.

The flow regulator according to the invention is simple but effective in controlling fluid flow. For the installation and fastening of the flow regulator, it can be equipped with simple fastening means so that it can be assembled in a single unit with any conventional treatment unit. You can also mount the flow controller with the ability to disconnect relative to the inside of the treatment unit.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is suitable for providing control of the flow rate of water in water treatment systems, especially in gravity water treatment devices for purifying water for domestic consumption. Such devices usually include various components and, as a rule, have five main nodes, which include:

(a) the upper chamber, which is used to store water to be treated; a pre-filter is usually installed in this chamber, usually a coal block to remove sediments, organic pollutants and cysts;

(b) a biocide delivery system that typically transfers chlorine tablets containing substances such as sodium dichlorocyanuric acid (DCCA), trichlorocyanuric acid (TCCA), iodinated resin or other biocides; the biocide supply system receives water flowing by gravity from the upper chamber;

(c) a retention chamber or a settling chamber with a certain residence time, providing the time for the joint stay of pathogens and a biocide in it, necessary to achieve the goal - the destruction of pathogens;

(d) a waste absorption system (usually containing granular activated carbon) that receives water from the trap chamber and removes residual contaminants such as iodine, chlorine, trihalomethanes (THM), etc .;

(e) a lower chamber that receives purified water for consumption from the delay chamber.

An important factor for such gravity-cleaning devices is the variable inlet water flow rate that such systems deal with. Considering that different components have different requirements for effective cleaning, based on the contact time and residence time of the water passing through them, it is important that the water flow in such devices is effectively controlled to achieve effective water treatment. In particular, biocidal purification in such systems has a fundamental relationship with the flow of water through the biocide feed system, since it is important that if the water must come into contact with the biocide for the desired destruction of pathogens, then it is undesirable for the water passing through the biocide feed system , contained a biocide in proportions that went beyond the agreed safe limit for household consumption.

The flow regulator according to the invention ensures effective control of the flow of water, providing a safer treatment of the water to be treated.

Below is a more detailed description of the flow regulator in the following examples, which are not restrictive and are illustrated by the accompanying drawings, while:

figure 1 presents a cross section of a tub filter for cleaning drinking water, including a flow controller according to the present invention;

FIG. 2 is a sectional view illustrating a flow regulator in a tub filter shown in FIG.

Figure 1 shows a tub filter containing an upper chamber 1 for storing water to be treated. In the upper chamber 1, a preliminary filter (PF) is also enclosed, which is a coal block used to remove sediments and organic contaminants, as well as a cyst. Water has the possibility of gravity to get from the PF to the additional chamber 2, where the flow regulator (PP) is enclosed. The flow controller is designed in such a way that, regardless of the volume of water in the upper chamber 1 and the speed of water flow through the PF, water from the PP is discharged in controlled quantities and at a controlled speed. The flow regulator contains a control tank, the dimensions of which provide an adjustable volumetric flow rate of water from the control tank. The flow regulator further comprises a siphon drain element (SSE), which is a tubular element in the form of an inverted letter U having an inlet (VO), which is at a higher level than the outlet (VO). The height difference between HPO and HE can be adjusted as desired depending on the required flow rate. Water from the PP flows out of the outlet with a controlled flow rate and passes through the biocidal unit 3, which releases a pre-selected dose of biocide into the water. After that, the water treated with the biocide gets the chance by gravity to enter the lower chamber 5 through the waste absorption unit 4. Treated water is collected in the lower chamber 5 for final discharge, just as and when necessary, from the water supply system in the lower chamber (5).

Figure 2 illustrates in more detail the flow controller (PP). It contains a control tank (PeR), in which an adjustable volume of water is stored, independent of the volume of the source from which it is supplied to the tank. A tubular siphon drain element (tubular SSE) provides the output of controlled amounts of water. The dimensions of the ReP, as well as the diameters and heights of the inlet and outlet openings of the tubular SSE, are selected so that the desired flow control can be achieved. The PP flow regulator can also be designed in such a way that a controlled flow of water from ReP through the tubular tubular SSE takes place only when (ReP) is filled to the desired height.

Example

Flow Control Demonstration

To demonstrate the regulation of water flow regardless of the pressure in the upper chamber 1, the filter shown in FIG. 1 was used. Provided in the upper chamber 1 various levels ranging from 170 to 55 mm, and determined the flow rate of water through the outlet (YO) (example 1). The experiment was repeated using the filter shown in figure 1, except that the PP was absent (comparative example A). The results are shown in table 1.

Table 1 Head (mm) Average flow (ml / min)
Example 1 Comparative Example A 170 81 162 110 86 106 55 89 27

The results show that in the presence of PP, the water flow is independent of the pressure in the upper chamber. This does not happen in the case of comparative example A. Therefore, the flow regulator according to the invention is effective in eliminating the dependence of the flow rate occurring upstream on the flow of biocide into the dispenser, which leads to a uniform flow of biocide.

Claims (4)

1. A water treatment system for the controlled release of biocides into water, containing a source of untreated water and a treatment unit for separating biocides into water, characterized in that the water passes sequentially through the water treatment system, which contains the following nodes:
a water flow control tank connected to a source of untreated water, comprising at least one inlet means for receiving water from a source of untreated water, having pre-selected sizes and configured to drain a desired volume of water,
a siphon drain device connected to a reservoir controlling the flow of water, configured to control the flow of water from the reservoir and having an outlet for water, which is connected to the treatment unit for the release of biocides with the possibility of regulating the residence time of the water in the treatment unit for the release of biocides. 2. The water treatment system according to claim 1, characterized in that the siphon drain means is a tubular element configured to control the flow of water from the tank regulating the flow of water to the treatment unit for the release of biocides. 3. The water treatment system according to claim 2, characterized in that the tubular element is made in the form of an inverted letter U having an inlet in the tank regulating the flow of water, located at a higher level than the outlet, which is connected to the treatment unit for the release of biocides. 4. The water treatment system according to any one of claims 1 to 3, characterized in that it is configured to provide a flow rate of 10-200 ml / min.

Images