JPS6287296A - Complete treatment device for water - Google Patents

Abstract

PURPOSE:To efficiently execute a complete treatment of secondarily treated water, etc., by constituting a titled device of a filtering treatment tank for treated water, ozone and ultrasonic treatment tank for changing the high mol.wt. material in the treated water to low mol.wt. material and adsorbing treatment tank for the low mol.wt. material in the treated water. CONSTITUTION:A supply port 10 for supplying the treated water is provided to the filtering treatment tank 1 and the first filter media 4 for making the filtering treatment are housed therein. Ozone contactors 11a, 11b which change the high mol.wt. material in the treated water to the low mol.wt. material and an ultrasonic wave generator 28 are housed in the ozone and ultrasonic treatment tank 2 communicated with the tank 1. A discharge port 26 is provided to the adsorbing treatment tank 3 communicated with the tank 2 and the second filter media 20 for adsorbing treatment of the low mol.wt. material in the treated water are housed therein. As a result, the complete treatment of the secondarily treated water, etc., is efficiently executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an advanced water treatment device for subjecting secondary treated water to higher level treatment.

B0 Summary of the Invention The present invention provides a filtration treatment tank for filtering treated water, and a method for reducing high molecular weight substances in the treated water, in an advanced water treatment device for subjecting secondary treated water to higher level treatment. By comprising an ozone/ultrasonic treatment tank for converting into molecular weight substances and an adsorption treatment tank for adsorbing low molecular weight substances in the treated water, high-level treatment of secondary treated water etc. can be carried out efficiently. This is what I did.

C0 Conventional Technology Nowadays, securing water resources has become a chore, and there is a tendency to reuse secondary treated water as industrial water.

However, if the secondary treatment is carried out effectively and the water quality is good, there is no problem in reusing the secondary treated water as it is, but for the following reasons, the quality of the secondary treated water is not stable. I am no longer able to get it.

(b) The amount of inflow to the secondary treatment equipment increases, and the fluctuations in inflow characteristics are large.

(b) Treated water is colored due to biological oxidation.

(c) There is a problem of high nutrition related to N and P.

Despite these circumstances, the trend of reusing secondary treated water is increasing year by year. On the other hand, due to social circumstances, the quality of water at intake sources is deteriorating, making it increasingly necessary to pre-treat the water at intake sources before guiding it to a water treatment plant to produce clean water.

Secondary treatment [11j Pre-treatment of water from the intake source in order to perform high-level treatment of water or create tap water, so-called high-level treatment,
Conventionally, the following method has been used.

(b) Activated carbon adsorption method (b) Electrodialysis method (c) Reverse osmosis method) Coagulation precipitation method (e) Chemical oxidation method (f) Sand filtration method Since the advanced processing methods have different processing performance, it is not possible to obtain the target processing performance simply by combining these methods.

Therefore, an object of the present invention is to provide an advanced water treatment device that solves such problems.

Means for Solving the E0 Problem The structure of the present invention for achieving the above object is a filtration filter having a supply port for supplying treated water and housing a first furnace material for performing filtration treatment. an ozone/ultrasonic treatment tank that communicates with the filtration tank and houses an ozone contactor and an ultrasonic generator that convert high molecular weight substances in the treated water into low molecular weight substances; It is characterized by comprising an adsorption treatment tank that communicates with the sonication treatment tank, has a discharge port, and houses a second furnace material for adsorbing low molecular weight substances in the treated water.

70 Effect When treated water such as secondary treated water flows into the filtration treatment tank from the supply port, suspended matter contained in the treated water is removed by the first furnace material. After this, the treated water is treated with ozone and ultrasonic waves in an ozone/ultrasonic treatment tank using an ozone contactor and an ultrasonic generator, thereby converting the high molecular weight substances in the treated water into low molecular weight substances. Then, this low molecular weight substance is adsorbed and removed by the second door material in the adsorption treatment tank.

The higher-order processing is completed in the above manner.

G. Examples Hereinafter, the present invention will be explained in detail based on examples shown in the drawings.

Figure #3 is a cross-sectional view of an advanced water treatment device.

The advanced treatment equipment is composed of a filtration treatment tank 1, an ozone/ultrasonic treatment tank 2, and an adsorption treatment t1!13, and the ozone/ultrasonic treatment tank 2 includes an ultrasonic treatment tank 2a and an ozone treatment m2.
b, 2c.

The filtration treatment tank 1 removes suspended solids (hereinafter referred to as s) contained in the treated water.
It was installed for the purpose of removing sand (hereinafter referred to as SF and G) and sand (hereinafter referred to as SF and G). It is stored in a replaceable manner by closing a lid 5 provided on the top that can be opened and closed. The material packed into the bag as the first furnace material 4 must be of solid type to prevent it from flowing downstream. -Overprocessing! At the bottom of 1, there is a drain pipe 6 for storing sedimented SS, etc.
A backwash pump 8 is connected below the mud removal pit 6 via a valve 7. The backwash pump 8 is provided to clean the furnace material 4 so that it will not be clogged by SS components or the like. In the figure, 9 is a round valve for discharging SS water, etc., and 10 is a supply port for supplying secondary treated water.

In the ozone/ultrasonic treatment tank 2, the ultrasonic treatment tank 2a
communicates with the overtreatment tank 1 at the bottom, the ozone treatment tank 2b communicates with the ultrasonic treatment tank 2a at the top, and the ozone treatment tanks 2b and 2
C is connected at the top and bottom.

An ultrasonic generator 28 is installed at the bottom of the ultrasonic treatment 12a, and ozone contactors 11a and llb are installed at the bottoms of the ozone treatment tanks 2b and 2C, respectively.

The ozone contacts aL1a and 11b are provided to increase the chances of contact between the treated water and ozone. Ozone generator 1 provided externally
4 is connected. The upper part of the ultrasonic treatment tank 2 at the ozone treatment tank 2b, 2C is sealed, and an exhaust pump [6 is connected to this upper part via a valve 15, and the exhaust pump 16, the exhaust ozone processor 17, and the ozone A generator 14 is connected via a three-way valve 18.

In addition, in this example, the case is shown in which the ozone/ultrasonic treatment tank 2 is of three types and is equipped with two sets of ozone contactors.
When the amount of treated water is small, the single-tank adsorption treatment tank 3 is provided for the following purpose. That is, since the high molecular weight substances generated by the secondary treatment are reduced in molecular weight in the ozone/ultrasonic treatment bath 2, the aim is to remove this reduced molecular weight substance.

A sprinkling toy 19 for sprinkling treated water is provided in the upper part of the adsorption treatment tank 3, and below the sprinkling toy 19 is a second furnace material 2.
0 is placed. The second reactor material 20 is one that adsorbs low molecular weight substances, and it is desirable to use activated carbon, but since activated carbon is expensive, it is economical to mix or layer materials with adsorption capacity, such as Kanuma soil or volcanic rock. be. Directly below the second furnace material 20 is a pipe 2 extending from the disinfection tank 21.
The tip of 2 is facing, and the bottom of adsorption tank 3 is a sludge pit.
is formed and a valve 24 is attached. In addition, 25
2 is a lid for replacing the second furnace material 20, and 26 is an outlet for discharging the highly treated treated water.

As mentioned above, the ozone/ultrasonic treatment tank 2 needs to have a sealed structure to prevent ozone from being released into the atmosphere, and for this reason, in order to communicate the ozone treatment tank 2C and the adsorption treatment tank 3, it is necessary to An overflow portion 27 is provided at the lower G) position.

Next, the operation of such an advanced water treatment device will be explained.

Secondary treated treated water flows into the filtration treatment tank 1 from the supply port 10 and flows inside the sieve material 4, whereby floating SS and 87 water are filtered and removed.

The treated water from which SS components and the like have been removed flows into the ozone/ultrasonic treatment tank 2 from the lower part of the filtration treatment tank 1 and is subjected to ozone treatment and ultrasonic treatment. In the ultrasonic treatment tank 2a, the treated water is subjected to ultrasonic treatment by the ultrasonic generator 28 while flowing upward. The ultrasonic generator 28 does not need to be operated continuously, and if the treated water continuously flows into the ultrasonic treatment tank 2.
It is operated intermittently at the ratio of the volume of a to the inflow amount (hydraulic residence time in the ultrasonic treatment tank 2a), and when treated water intermittently flows in, it is sufficient to operate only when the water flows in. Ozone treatment
At 2+ and 2Q, ozone sent from the ozone generator 14 to the air diffuser plate 12 via the supply pipe 13 rises from the air diffuser plate 12 into the treated water and efficiently contacts the treated water. Ozone that has come into contact with the treated water accumulates in the upper part of the ozone/ultrasonic treatment tank 2, is sent to the exhaust ozone treatment device 17 by the exhaust pump 16, and is discharged into the atmosphere after treatment, or is removed from the ozone generator 1.
Sent to 4.

Whether the used ozone is processed and released into the atmosphere or returned to the ozone generator 14 for reuse is determined by the three parties *i.
Determined by the operation of s. That is, the three-way valve 18 connects the exhaust pump t6 and the exhaust ozone processor 17 or the exhaust pump 16 and the ozone generator 14.

Since used ozone can be reused, no ozone is wasted and the burden on the exhaust ozone processor 17 is reduced.

The treated water is subjected to ozone treatment and ultrasonic treatment by two sets of ozone contactors 11a and 111), and the high molecular weight substances (Too component) contained in the treated water become low molecular weight substances,
It flows into the adsorption treatment tank 3 from the overflow section 27 .

In the adsorption treatment tank 3 , the treated water is sprayed from the spray toy 19 toward the second filter material 20 , and in the ozone/ultrasonic treatment tank 2 , the low molecular weight substances in the treated water are reduced to a second furnace material 20 . is absorbed and removed.

In adsorption treatment tank 3, molecular flk5000 or more (Fl)
Although it cannot remove TOC components with a molecular weight of 500 to 5000 (F2) and inorganic components with a molecular weight of 500 or less (F3), it is effective in removing TOC components with a molecular weight of 500 to 5000 (F3). The treated water that has been highly treated as described above is disinfected with the deviscosity solution in the disinfection tank 21 as required, and is discharged from the discharge port 26.

If sedimented SS and the like accumulate in the mud removal pits 6 and 23, they can be discharged by opening the valves 9 and 24. In addition, if the No. 7 furnace material 4 becomes clogged due to long-term rotation, open the valve 7 and press 3fI! After washing the first 7P material 4 using the washing pump 8 and using the first filter material 4, the lid 5.
25 and replace it.

In this embodiment, the case where the secondary treated water is subjected to advanced treatment is shown, but the present invention can also be applied to the case where the water from the intake source for obtaining the above-mentioned water is subjected to advanced treatment.

According to the present invention, as described in detail of the H1 invention, the treated water flows in the order of the filtration treatment tank, the ozone/ultrasonic treatment tank, and the adsorption treatment tank, so that the 8B and Sr components are removed and the high concentration in the treated water is reduced. After the molecular weight substances are reduced to low molecular weight substances, the low molecular weight substances are adsorbed and removed, thereby ensuring that the water is treated at a high level.

[Brief explanation of drawings]

The figure is a sectional view showing an embodiment of the advanced water treatment apparatus according to the present invention. 1...filtration treatment tank, 2...ozone/ultrasonic treatment tank,
2a... Ultrasonic treatment tank, 2b, 2C... Ozone treatment tank, 3... Adsorption treatment tank, 4... No. 1 valve material, 10...
Supply port, 111! L11? )...Ozone contactor, 1
3... Supply pipe, 14... Ozone generator, 20... Second door material, 28... Ultrasonic generator.

Claims (1)

[Claims] a filtration treatment tank having a supply port for supplying treated water and housing a first filter medium for performing filtration treatment;
an ozone/ultrasonic treatment tank that communicates with the filtration treatment tank and houses an ozone contactor and an ultrasonic generator for converting high molecular weight substances in the treated water into low molecular weight substances;
1. An advanced water treatment device comprising an adsorption treatment tank that communicates with an ultrasonic treatment tank, has a discharge port, and houses a second filter medium for adsorbing low molecular weight substances in treated water.