JPS60143825A - Reaction and maturation apparatus - Google Patents

Abstract

PURPOSE:To control feed rate of reaction fluid with high precision even if a maturation vessel is made small by providing a bypass line which mixed soln. is discharged therethrough without passing through the maturation vessel to said maturation vessel, and by enabling to adjust the bypass rate of said bypass line. CONSTITUTION:A maturation vessel 20 which feed soln. and reaction fluid are matured therein is provided to the downstream side of a line mixer in which said soln. and fluid are stirred and mixed and the reaction state in said vessel 20 is monitored to control the feed rate of reaction fluid 200 with a controlling part 26. A bypass line 28 through which the mixed soln. is discharged without passing through said vessel 20 is provided to said vessel 20 and the bypass rate of the bypass line 28 is enabled to be adjusted. As a result, the feed rate of said reaction fluid is enabled to be controlled enough and accurately even in a small-sized maturation vessel and also the maturation time is enabled to be adjusted optionally according to each kind of treating soln.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a reaction maturation tank, and particularly to a small-sized reaction maturation device that can freely set reaction times to suit various reaction actions.

[Prior art] In the treatment of various industrial wastewater and other types of wastewater, treatment equipment that mixes a predetermined reaction fluid with wastewater stock solution, performs chemical treatment, and discharges the mixture is well known, and is used to treat wastewater or domestic wastewater in chemical treatment plants. widely used.

Particularly in recent years, concrete waste liquids and the like at construction sites have become a major problem as wastewater concentrates of this type, and there is a demand for correct treatment and discharge of calcium-based waste liquids with high pH levels. In other words, in the past, it was customary for concrete wastewater, etc. to be discharged directly into the sewer, but in such primitive discharge treatment, the pH level in the sewer increases significantly, and the purification equipment becomes unable to handle it. Since it is extremely difficult to process these, it is necessary to treat them individually at each construction site, and for this purpose, a small IIJ physical covering device is required.

Normally, in order to prevent the stock solution from being neutralized by the chemical reaction described above, a predetermined reaction fluid (neutralizing solution) is added to the stock solution to perform a predetermined neutralizing action. The supply must be carried out while monitoring the reaction results, and if the supply amount is inappropriate, the P of the effluent may be reduced.
There is a problem in that it causes a significant change in H degree and increases the difficulty of purification. Therefore, even in conventional devices, such a reaction neutralization device requires that the reaction be sufficiently matured after mixing the stock solution and the reaction fluid, and that after this maturation I)
The amount of reaction fluid supplied is controlled by detecting the degree of H, and such a device is known as a reaction maturation device.

However, the conventional reaction maturation apparatus requires a large maturation tank in order to carry out a sufficient maturation effect, making it unavoidable to increase the size of the apparatus. In particular, the reaction maturation time varies greatly depending on the type of stock solution or reaction fluid, and equipment suitable for these various processing operations requires a large-capacity maturation tank that is compatible with processing liquids that require a long reaction maturation time. There was a drawback in that it was not possible to obtain a small and simple device for use at construction sites, etc., as described above.

[Object of the Invention] The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a system that can sufficiently accurately control the supply amount of reaction fluid even with a small maturation tank and that is suitable for various processing liquids. The object of the present invention is to provide an improved reaction maturation device in which the maturation time can be arbitrarily adjusted.

"Structure of the Invention" In order to achieve the above object, the present invention provides a bypass line in the conventional maturation tank and discharges a part of the mixed liquid without passing through the maturation tank. It is possible to provide a reaction maturation device that performs maturation by sampling and extracting only a part of the liquid, thereby achieving a sufficient maturation effect and controlling the supply amount of reaction fluid with high precision even though it is a small maturation tank. In addition, by arbitrarily changing the amount of bypass in the bypass line, the amount of sampling in the maturation tank can be changed according to the characteristics of the treated liquid, and the amount of bypass can be increased for a treated liquid with a slow reaction time. The method is characterized in that the reaction time in the maturation tank is lengthened, and it is possible to prevent reaction results from being monitored in an immature state.

[Embodiments] Preferred embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a schematic configuration of a reaction maturation apparatus according to the present invention, in which a stock solution 100 is stored in a pre-tank 10 and then pumped up and supplied to a line mixer 16 from a pumping pipe 14 by a pump 12.

Of course, in the present invention, the stock solution 100 may be directly supplied to the line mixer 16 without passing through the pre-tank.

The line mixer 16 consists of a static mixing device in which a plurality of mixing elements are arranged in a pipe at different phases,
Therein, the desired mixing action takes place as the feed liquid passes through each mixing element.

Upstream of the line mixer 16, a reaction fluid 200 is supplied to a part of the pumping pipe 14, and thereby,
Inside the line mixer 16, the stock solution 100 and the reaction fluid 2
00 is supplied at the same time, the above-mentioned static mixing element performs the efficient stirring and mixing action, and the extremely uniformly mixed processing liquid 300 flows out at the outlet side.

In this embodiment, the stock solution 100 is made of, for example, concrete wastewater at a construction site, and various acids such as dilute sulfuric acid and dilute hydrochloric acid are suitable as the reaction fluid 200. Carbon dioxide gas is used, from the carbon dioxide source 18 to the valve 20.
Carbon dioxide gas is supplied into the pumping pipe 14 through the pump. Therefore, in the line mixer 16, carbon dioxide gas is mixed into the concrete waste liquid and is efficiently dissolved until it is sufficiently saturated.

The treatment liquid 300 is supplied to a maturation tank 20 provided downstream of the line mixer 16, undergoes a predetermined reaction maturation action within the maturation tank 20, and is then discharged to a discharge tank 22.

The reaction result of the fully matured treatment liquid at the outlet side of the maturation tank 20 is taken out from the sampling valve 24 to the sensor 26, and the reaction result is measured and monitored.

Detection of the reaction result by the sensor 26, in the example, PH
After the temperature measurement is completed, the sampled treatment liquid is discharged into the discharge tank 22.

Then, the detection result of the sensor 26 is supplied to the valve 20, and the opening degree of the valve 20, that is, the amount of carbon dioxide gas supplied from the carbon dioxide source 18 to the pumping pipe 14 is adjusted.

Therefore, based on the maturation results in the maturation tank 20, the stock solution 100
It is understood that the amount of reactant fluid 200 provided to the reactor fluid 200 is precisely controlled.

The present invention is further characterized in that a bypass line 28 is provided in parallel to the maturation tank 20, and the treatment liquid 300 is supplied to the maturation tank 20 and the bypass line 28 in a branched manner.

Therefore, according to the present invention, the maturation tank 20 only needs to mature a part of the processing liquid 300, and in the present invention, since the processing liquid 300 is uniformly stirred and mixed by the line mixer 16, only a part of the processing liquid 300 is matured. By maturing only this part in the maturation tank 20, even if the maturation tank 20 is made small, the maturation time can be sufficiently delayed, and monitoring with the sensor 26 can be performed with extremely high precision. As a result, reaction fluid 2
It also has the advantage of being able to precisely control the supply amount.

In the present invention, a control valve 30 is provided in the bypass line 28, whereby the amount of bypass can be arbitrarily adjusted. By increasing the amount of bypass, it becomes possible to obtain sufficient maturation time even in the small maturation tank 20.

Therefore, in the present invention, there is no need to provide a large maturation tank with sufficient safety for each stock solution as in the past.
Even a small maturation tank has the advantage that by installing the bypass line 28, the maturation results can be monitored extremely efficiently and the supply amount of the reaction fluid can be controlled accordingly.

In the illustrated embodiment, the valve 20 for controlling the supply of carbon dioxide gas can be provided with a control input from a control end 32 separate from the monitoring results of the sensor 26, thereby providing various ancillary effect can be achieved.

That is, in the illustrated concrete wastewater treatment, etc., the raw solution 100 is pumped up by the line mixer 16 by the pump 12, but when the treatment operation is completed, the drive of the pump 12 is stopped and the completion of the "C treatment operation is achieved." Ru.

However, in conventional devices, the pump 12
In other words, as mentioned above, in the pumping processing method shown in the figure, once the processing has started, due to the siphon phenomenon,
Even after the pump 12 is stopped, the stock solution 100 is automatically pumped up to the discharge side, which has the drawback of causing unexpected accidents, and there is a strong demand for countermeasures against this problem.

This embodiment makes it possible to deal with such a situation very easily. That is, by supplying a signal to the control end 32, the valve 20 is enlarged at the end of the work, and the pumping pipe 14 is Carbon dioxide can be supplied in excess. That is, the excess supply of carbon dioxide gas is caused by the plate tube 14.
A large gas tank is created inside the pump 12, thereby separating the raw solution side and the discharge side by the gas tank, reliably preventing the above-mentioned siphon phenomenon from occurring, and preventing the excessive supply of carbon dioxide from the pump 12. If done in synchronization with the stop, it will be possible to complete the work reliably, which will greatly contribute to automatic driving and other areas. Of course, in order to form the gas tank for finishing the work described above, it is possible to simply supply an excess of air in addition to the carbon dioxide gas in the embodiment.

FIG. 2 shows an integrated embodiment of the reaction maturation device according to the present invention, which is made smaller and more compact. The same members shown in FIG. Omitted.

- What is characteristic about this embodiment is that the line mixer 16 is inserted into the maturation tank 20, and the entire device is extremely small and compact, and the maturation tank 201.
It has an elongated cylindrical shape, and its lower lid 40 is provided with a drain valve 42, which is securely fixed to the main body of the maturation tank 20. Further, a line mixer 16 is suspended and fixed to the upper lid 44 of the maturation tank 20 via a cap 46, and the lower end of the line mixer 16 opens into the maturation tank 20. A plate tube 14 is connected to the upper end of the line mixer 16, and the stock solution 100 is supplied from the lower side thereof.
A reaction fluid such as carbon dioxide gas 200 is supplied from above.

A discharge pipe 48 is further connected to the upper lid 44,
The matured treatment liquid is discharged to the outside through a discharge pipe 48, and a sensor 26 is installed in the middle of the discharge pipe 48 to monitor the maturation results within the maturation tank 20.

Furthermore, in this embodiment, a bypass line 28 is connected to the side surface of the lower lid 40 of the maturation tank 20, so that a part of the uniform mixed treatment liquid discharged from the line mixer 16 passes through the maturation tank 20. It is understood that the water is discharged directly to the outside from the bypass line 28 instead of being discharged directly from the bypass line 28. A control valve 30 is provided in a part of the bypass line 28, and the amount of bypass is adjusted.

As described above, according to the embodiment shown in FIG. 2, the line mixer is incorporated inside the maturation tank 20, and each piping
By connecting them in an efficient arrangement, it is possible to form a small and compact reaction maturation tank.Such small equipment makes it easy to move to each construction site, and in some cases, it can be mounted on a truck or other vehicle. It also becomes possible to use it as a device.

[Effects of the Invention] As explained above, according to the present invention, it is possible to obtain an improved reaction maturation apparatus that can reduce the size of the maturation tank and control the amount of reaction fluid supplied with high precision, and also By arbitrarily adjusting the amount of bypass, it is possible to provide good compatibility with various stock solutions.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing a first preferred embodiment of a reaction maturation device according to the present invention, and FIG. 2 is a perspective view showing a preferred embodiment of a reaction maturation device suitable for the present invention. 14 ... Sump pipe 16 ... Line mixer 18 ... Carbon dioxide source 20 ... Maturation tank 21 ° ... Valve 26 ... Sensor 28 ... Bypass line 30 ... Control valve 100 ... Stock solution 200 ... Reaction fluid 300 ... Processing liquid. Agent: Patent Attorney: Ken Yoshida, Part 2: 1981, April 20, 1982, Mr. Commissioner of the Japan Patent Office, 1, Indication of the case, 1968, Patent Application No. 248886S''i2, Name of the invention, Reaction matured. Apparatus 3, person making the amendment, and the relationship Patent 5'1 Applicant Address: 318 Minami-Oizumi-cho, Nerima-ku, Tokyo Name: Reika Kogyo Co., Ltd. 4, Agent 5, Detailed description of the invention in the specification to be amended.

Claims (1)

[Claims] (1) A line mixer that stirs and mixes the stock solution and the reaction fluid, a maturation tank installed downstream of the line mixer that matures the reaction of both liquids, and monitors the reaction state in the maturation tank to control the supply amount of the reaction fluid. A reaction maturation device including a control unit for controlling the reaction maturation device, characterized in that the maturation tank is provided with a bypass line for discharging the mixed liquid without passing through the maturation tank, and the amount of bypass in the bypass line can be adjusted. reaction maturation device. (2. The reaction maturation device according to claim (1), wherein the line mixer is provided in a maturation tank.