JPS5884014A - Water treating method and its device - Google Patents

Abstract

PURPOSE:To efficiently remove corrosive products without lowering their temperatures, by using an adsorbent capable of showing removing performance even at high temperatures. CONSTITUTION:Fine wires 2 are packed in a vertically cylindrical pressure vessel 1, and a solenoid 3 for exciting the wires 2 is coaxially arranged on the outer circumference of the vessel 1. A raw liquid flow-in port 5 and a treated liquid flow-out port 6 are connected to the vessel 1, and a raw liquid flow-in pipe 7 and a backwashing water discharging pipe 10 are connected to the port 5, and a treated liquid discharging pipe and a backwashing water flow-in pipe 9 are connected to the port 6, respectively. An adsorbent is injected from an adsorbent injecting pipe 11 having an on-off valve 16 to previously stick the adsorbent 4 onto the excited wires 2 and make preparations for the flow-in of the raw liquid. The adsorbent is magnetite. Valves 12 and 13 are gradually opened to treat the raw liquid, and then, are closed after capturing cobalt; impurities are removed together with the adsorbent after opening valves 14 and 15, and then, the coil 4 is degaussed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a water treatment method that removes corrosion products present in high-temperature water! ! equipment (= related to)

Many carbon steels and stainless steels are used in power plants, and the corrosion of these metal materials produces corrosion products that have various negative effects.

In nuclear power plants, these corrosion products are activated in the neutron field of the reactor core and become radioactive substances, which can cause problems such as radiation exposure if emitted outside the reactor core. In particular, stainless steel, stellite materials, etc. (; When the cobalt contained in the material is activated, it becomes cobalt-60, which is currently the main radioactive material used in nuclear power plants. Therefore, cobalt and cobalt-6G are It is important to sufficiently remove
＠臘で44° Conventional systems use ion exchange resins to remove these substances. Since ion exchange resins cannot be used at high temperatures, raw water is passed through a heat exchanger to bring it to a low temperature, then passed through an ion exchange am and heated again. Therefore, in order to sufficiently remove cobalt, cobalt-60, etc. from a power generation plant, increasing the throughput will not only increase the size of the equipment, but also cause a large amount of heat loss (reducing the power generation output). .

The purpose of the invention is to demonstrate removal performance even at high temperatures1? To provide a water treatment fiber that can efficiently remove corrosion generated without lowering the temperature by using a hardening adsorbent.

In the present invention, the undiluted solution flows into and out of the chamber; a thin metal wire is filled, and the thin metal wire is excited to disperse and capture an adsorbent such as magnetite, and then the undiluted solution and the container are An object of the present invention is to provide a water treatment method and an apparatus for the same, in which the impurities in the JIU liquid are thoroughly captured by an adsorbent (62).

The present invention will be described below with reference to two embodiments shown in the drawings. In FIG. A solenoid coil 3 for the purpose of The pipe 7 and the backwash water discharge pipe 10 are connected, and the treated liquid outlet 642 is connected to the treated liquid discharge pipe 8 and the backwash water O inflow pipe 9.

Close-up valves 12, 13, 14, 15, . is provided. Furthermore, PV&adhesion medium 4 is put into the adsorbent injection pipe 11 which has two open/close valves 16, adsorbent 4 is attached to the excited thin wire 2 in advance, and the stock solution is injected (prepared in advance).Solenoid coil is installed. Magnetite exists as an adsorbent that can be used and retained. Conventionally, magnetite has a spinel structure of cobalt, cobalt 60, etc., and is magnetized and retained by being excited by a solenoid coil.

Further, as shown in FIG. 2, the backwash water inflow pipe 9 and the backwash water discharge pipe 10 may be directly connected to the pressure vessel. Furthermore, the adsorbent injection pipe may have an inflow of the stock solution. In addition, in FIG. 1 12, an inflow pipe 7 for the stock solution, a discharge pipe 10 for backwash water, an outflow pipe 8 for the liquid to be treated, and an inflow pipe 9 for backwash water.
The connection direction of the piping is free.

Next, the present invention (two types of water burial equipment (two types of water treatment 0 examples 4)
Let me explain about two things. Opening/closing 12,13°1 in Figure 3
4.15 is fully closed, solenoid-il 3 (second zero-order that generates a magnetic field), adsorbent injection pipe 110 ill-close valve 1
6 and open the on-off valve 18 of the return pipe 17, and add a po/g or an eductor to the water tank 4 in advance.
The dispersed adsorbent 4 is injected into the pressure vessel 1 (injected twice).

The adsorbent 4 is filled in the pressure vessel 142) and captured by the thin wire 2 which is energized by the solenoid coil 4.

At this time, the thin wire 2 may be shaped like a wire mesh.

In addition, a method different from this injection method is also possible, in which injection is started after demagnetizing the solenoid coil 3 and then energized after a while.

Next, the on-off valves 16 and 18 are fully closed, and the -close valve and n are gradually opened to C2 to treat the raw water. Cobalt, cobalt 60, etc. in the raw water are captured by the g&adhesive material 41, which has a large surface area. After the impurities such as cobalt (cobalt, cobal) 60 etc. have been captured, the on-off valve branch 13 is fully closed, and the on-off valve branch 14.15 is fully closed.
By opening, impurities trapped along with the adsorbent are removed. At this time, the solenoid coil 4 is demagnetized.

As explained above, according to the present invention, the metal mail in the container through which the stock solution flows in and out is excited, and the metal rust is eliminated. By dispersing and capturing the I-2 adsorbent, and then passing the stock solution through the mixture so that the impurities were adsorbed by the adsorbent,
The dispersion area of the adsorbent becomes larger, so there are more opportunities for contact with impurities, and impurities can be efficiently treated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of a water treatment device implementing the water treatment method of the present invention, FIG. 2 is a block diagram showing another embodiment of the water treatment device, and FIG. FIG. 2 is a system diagram for explaining such a water treatment method. 1... Pressure vessel 2... Thin metal wire 3... Solenoid coil 4... Adsorbent material 5... Raw solution inlet
6...Outflow lower...Inflow pipe 8...Outflow pipe 9...Backwash water flow pipe 1O...Backwash water discharge pipe 11...Adsorbent injection pipe 12, 13.14.15 ．．
16.18...No(19...Adsorbent tank
Canada Pump (7317) Agent Patent Attorney Rules
Kensuke Chika (and 14 others) Figure 1 Figure 2 Figure 3

Claims (3)

[Claims] (1) Inflow and outflow of the stock solution; filling a thin metal wire and exciting the thin metal wire; thus, an adsorbent such as magnetite is dispersed and captured on its surface;
A water treatment method characterized in that the stock solution is then passed through the container; impurities such as pult and cobalt-600 in the stock solution are thereby captured by a metal stmoa deposit. (2) A fine metal wire is filled in the hIF vessel by flowing the stock solution in and out, and the fine metal wire is excited by the metal wires to disperse and capture a primary material such as magnetite, However, by draining the undiluted solution into the SS, the impurities such as cobalt and topper 600 in the undiluted solution are compensated with a thin metal wire, and after the excitation of the thin metal wire is demagnetized, it is adsorbed. A water place where the removal of impurities that are mixed with the wood is considered a nuisance.lj:Jtc. (3) An SS filled with thin metal wires, a solenoid coil that excites the thin metal wires in the ζ0 tester, a pipe system for inflowing and outflowing the Shuji stock solution in the container, a pipe system for supplying the first material, and A water treatment device characterized by being equipped with a pipe system that supplies backwash water to remove adsorbent and impurities from inside the container.