JPH04190895A - Purifying device for animal raising pond - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an apparatus for purifying water in a pond where animals are kept in a zoo or the like (hereinafter referred to as an animal breeding pond). In particular, an animal breeding pond purification device that effectively removes solid and dissolved organic matter such as animal excrement and food residue, which are pollutants in animal breeding ponds, and ammonia, and also prevents the mucous membranes and eyes of animals from being affected. It is related to.

(Prior Art) Conventionally, water in animal breeding ponds has been purified by sand filtration treatment and sterilization treatment by injection of hyposalt.

FIG. 2 is a schematic diagram showing an example of the configuration of this type of conventional animal breeding pond purification device. In Fig. 2, water from an animal breeding pond 1 such as a sea lion pond is supplied to a first sand filter tower 31 and a second sand filter tower 32 by a raw water pump 2, and mainly removes the solid properties of the polluted water. do. And each sand filter tower 31
．． The treated water from No. 32 is injected into the hyposalt tank 4 with hyposalt supplied from the hyposalt tank 5 by the hyposalt injection pump 6 to decompose and sterilize ammonia and remove some residual chlorine. is maintained, and the treated water is returned to the animal rearing pond 1 by a treated water pump 7.

However, in such an animal rearing pond purification device, solid organic matter and ammonia are removed and sterilization is performed, but it is impossible to remove dissolved organic matter. In addition, residual chlorine in the treated water damages the particularly sensitive mucous membranes and eyes of animals, resulting in conditions that the animals cannot tolerate, making it impossible to keep animals safe.

(Problems to be Solved by the Invention) As described above, the conventional animal breeding pond purification device not only cannot remove dissolved organic matter, but also has the problem that it damages the mucous membranes and eyes of the animals.

The purpose of the present invention is to effectively remove solid and dissolved organic matter such as animal excrement and food residue, which are pollutants in animal breeding ponds, and ammonia, as well as to remove the mucous membranes of animals through ozone oxidation, which has no oxidizing power. To provide an extremely reliable animal rearing pond purification device capable of preventing damage to animals and eyes.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the animal breeding pond purification device of the present invention purifies the water of the animal breeding pond supplied by the raw water pump.
A pre-ozone reaction tower that undergoes pre-ozonation treatment with ozone to form micro flocs into a state that is easy to filter; a sand filter tower that processes the treated water from the pre-ozone reaction tower through sand filtration to remove solids; and a sand filter. An ozone reaction tower treats the treated water from the passing tower with ozone from an ozone generator to turn difficult-to-decompose organic matter into decomposable organic matter that is easy to treat; A biological activated carbon tower that processes the water to remove dissolved organic matter and ammonia and returns the treated water to the animal breeding pond, and, if necessary, a pre-ozone reaction tower that decomposes the remaining exhaust ozone from the pre-ozonation treatment and releases it into the atmosphere. The system is equipped with an exhaust ozone decomposition tower to emit waste ozone to.

(Function) Therefore, in the animal breeding pond purification device of the present invention, water from the animal breeding pond is supplied to the pre-ozone reaction tower by the raw water pump, and is filtered by the sand filter tower using the ozone discharged from the ozone reaction tower. A pre-ozonation treatment is performed to make it easier to microflocculate.

Further, the exhaust ozone remaining from the previous ozone treatment is decomposed in an exhaust ozone decomposition tower and released into the atmosphere.

Next, the treated water from the pre-ozone reaction tower is subjected to sand filtration treatment in a sand filter tower to remove solids, and the treated water is introduced into the ozone reaction tower where it is ozonated using ozone from an ozone generator. Then, the hardly decomposable organic matter is converted into a decomposable organic matter, and deodorization and decolorization are performed. Thereafter, the treated water from the ozone reaction tower is treated with biological activated carbon in a biological activated carbon tower to remove dissolved organic matter and ammonia, and the treated water is returned to the animal breeding pond.

Thereby, solid and dissolved organic matter such as animal excrement and food residue, as well as ammonia, can be effectively removed. In addition, by using ozone oxidation, which does not leave any oxidizing power, without using hypochlorite, it is possible to avoid damaging the animal's mucous membranes and eyes, making it possible to raise animals with peace of mind. .

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing a configuration example of an animal breeding pond purification apparatus according to the present invention, and the same parts as in FIG. 2 are designated by the same reference numerals.

The animal breeding pond purification device of this embodiment includes a raw water pump 2, a pre-ozone reaction tower 8, an exhaust ozone decomposition tower 9, and a first ozone decomposition tower. The second sand filter tower 31, 32, the ozone generator 10, the ozone reaction tower 11, the first. Second biological activated carbon tower 121, 122
and a treated water pump 7.

Here, the raw water pump 2 supplies water from the animal breeding pond 1 to the main body of the purification device. In addition, the pre-ozone reaction tower 8 uses water from the animal rearing pond 1 supplied by the raw water pump 2.
It is pre-ozone treated with ozone to form micro flocs that are easy to filter. Further, the exhaust ozone decomposition tower 9 decomposes the exhaust ozone remaining from the pre-ozone treatment in the pre-ozone reaction tower 8 and releases it into the atmosphere. Furthermore, the first. The second sand filter towers 31 and 32 are for sand filtering the treated water from the pre-ozone reaction tower 8 to remove solid content.

On the other hand, the ozone generator 10 generates ozone. Further, the ozone reaction tower 11 performs ozonation treatment on the treated water from the first and second sand filter towers 31 and 3.2 using ozone from the ozone generator 10 to easily treat refractory organic substances. In addition to converting the ozone into a decomposable organic substance, surplus ozone from the ozone treatment is supplied to the pre-ozone reaction tower 8 as ozone for the pre-ozone treatment. Furthermore, the first. The second biological activated carbon towers 121 and 122 treat the treated water from the ozone reaction tower 11 with biological activated carbon to remove dissolved organic matter and ammonia.

Furthermore, the treated water pump 7 is the first. The treated water from the second biological activated carbon towers 121 and 122 is returned to the animal rearing pond 1.

Next, the operation of the animal breeding pond purification device of this embodiment configured as described above will be explained.

In FIG. 1, water in an animal rearing pond 1 polluted with animal excrement, food residue, etc. is supplied as raw water to a pre-ozone reaction tower 8 by a raw water pump 2.

In this pre-ozone reaction tower 8, the exhaust ozone that has not been absorbed in the ozone reaction tower 11 in the latter stage and has come out into the gas phase of the reaction tower is introduced into the lower part of the pre-ozone reaction tower 8, and is supplied by the raw water pump 2. Catalytic reaction occurs with raw water in a countercurrent flow. Then, due to this reaction, germs, bacteria, and insects in the raw water are killed to some extent, and the solid sludge material is also changed into a state that can be easily filtered through the sand filter towers 31 and 32. Further, in this case, the exhaust ozone remaining from the previous ozone treatment is decomposed in the exhaust ozone decomposition tower 9 and released into the atmosphere. The treated water from the pre-ozone reaction tower 8 is then transferred to the first ozone reaction tower 8. The raw water is introduced into second sand filter towers 31 and 32, and subjected to sand filtration treatment to remove solids, which are turbid substances, in the raw water, and then introduced into the ozone reaction tower 11.

Next, in the ozone reaction tower 11, the ozone generated in the ozone generator 10 is introduced into the lower part of the ozone reaction tower 11, and
．． A catalytic reaction occurs with the treated water from the second sand filter column 31, 32 in a counter flow. Then, through this reaction, the treated water is deodorized and decolorized, and the dissolved organic matter that is difficult to decompose is converted into degradable organic matter that can be easily treated by microorganisms.

Further, in this case, surplus ozone from the ozone treatment is supplied to the pre-ozone reaction tower 8 as ozone for pre-ozone treatment. Then, the treated water from the ozone reaction tower 11 is transferred to the first. introduced into the second biological activated carbon towers 121 and 122, respectively,
The microorganisms in the biological activated carbon decompose and remove organic matter that has become decomposable organic matter through the ozone reaction. Also,
Ammonia is also decomposed and removed by the action of nitrifying bacteria. And the first. Second biological activated carbon tower 121°]2
The treated water is returned to the animal breeding pond 1 by a treated water pump 7.

In addition, in the above, the waste ozone that was not absorbed in the ozone reaction tower 11 is effectively used in the pre-ozone reaction tower 8, so that the ability to remove solid organic matter in the sand filter towers 31 and 32 is increased. . In addition, the ozone reaction tower 11 is
Refractory organic matter is converted into decomposable organic matter, but since most of the solid organic matter is removed in the sand filter tower 31, 32, the ozone is not consumed by the solid organic matter, and the dissolved refractory organic matter is converted into decomposable organic matter. effectively removed. Furthermore, the first
．． Dissolved organic matter and ammonia are removed in the second biological activated carbon towers 121 and 122, but since the organic matter is made hydrophilic in the ozone reaction tower 11, the adsorption capacity to the biological activated carbon does not decrease over a long period of time. , removal performance is maintained for a long time by microorganisms.

As described above, the animal breeding pond purification device of this embodiment includes a raw water pump 2 that supplies water from the animal breeding pond 1 to the purification device main body.
, a pre-ozone reaction tower 8 which pre-ozone-treats the water of the animal rearing pond 1 supplied by the raw water pump 2 with ozone and turns it into micro flocs to make it easy to filter, and a pre-ozone treatment in the pre-ozone reaction tower 8. The exhaust ozone decomposition tower decomposes the remaining exhaust ozone and releases it into the atmosphere, and the first ozone decomposition tower processes the treated water from the pre-ozone reaction tower 8 through sand filtration to remove solid content. A second sand filter tower 31,32, an ozone generator 1o that generates ozone, and a first sand filter tower 31,32. The treated water from the second sand filter tower 31, 32 is ozonated with ozone from the ozone generator 10 to convert recalcitrant organic matter into decomposable organic matter that is easy to treat, and to remove excess ozone from the ozone treatment. , an ozone reaction tower 11 that supplies ozone for pre-ozone treatment to the pre-ozone reaction tower 8, and treated water from the ozone reaction tower 11,
The first step is to remove dissolved organic matter and ammonia through activated carbon treatment using biological activated carbon. second biological activated carbon tower 121,
122 and the first. It is composed of a treated water pump 7 that returns treated water from the second biological activated carbon towers 121 and 122 to the animal rearing pond 1.

Therefore, the following various effects can be obtained.

(a) It is possible to effectively remove not only solid organic matter but also dissolved organic matter from the pollutants of animal rearing pond 1, such as animal excrement and food residue. It becomes possible to significantly increase the

(b) Ammonia can also be effectively removed by microorganisms attached to biological activated carbon.

(c) Unlike conventional methods, hypochlorite is not used, and the treatment is performed using ozone oxidation, which leaves no oxidizing power, so there is no irritation to the animal's mucous membranes or eyes, and they are protected from being affected by oxidation. It becomes possible to raise animals with peace of mind.

(d) As the ozone for the pre-ozonation treatment in the pre-ozone reaction column 8, the surplus high-concentration ozone after the ozone treatment in the ozone reaction column 11 is used, so the surplus ozone can be used extremely effectively. It becomes possible.

(6) Since the exhaust ozone remaining from the pre-ozone treatment in the pre-ozone reaction tower 8 is decomposed by the exhaust ozone decomposition tower 9 and released into the atmosphere, problems such as environmental pollution will not occur. .

Incidentally, in the above embodiment, even if a UV oxidation device is provided in place of the ozone reaction tower 11, the same effect can be obtained.

Further, in the above embodiment, the exhaust ozone decomposition tower 9, which decomposes the exhaust ozone remaining from the pre-ozone treatment in the pre-ozone reaction tower 8 and releases it into the atmosphere, is not essential to the present invention.

Furthermore, in the above embodiment, surplus ozone after the ozone treatment in the ozone reaction tower 11 is supplied as ozone for the pre-ozone treatment in the pre-ozone reaction tower 8; A part of the generated ozone may be supplied as ozone for pre-ozone treatment in the pre-ozone reaction tower 8.

[Effects of the Invention] As explained above, according to the present invention, water from an animal rearing pond supplied by a raw water pump is pre-ozonated with ozone to form micro flocs into a state that is easy to filter. The remaining waste ozone is decomposed and released into the atmosphere, and the treated water is sand filtered to remove solids, and further ozonated with ozone to convert recalcitrant organic matter into easily decomposable organic matter. This treated water was treated with activated carbon to remove dissolved organic matter and ammonia, and then returned to the animal breeding pond, so that solid and dissolved organic matter such as animal excrement and food residue, which are pollutants in the animal breeding pond, were removed. It is possible to provide an extremely reliable animal breeding pond purification device that can effectively remove ammonia and prevent animal mucous membranes and eyes from being affected by ozone oxidation that leaves no oxidizing power.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an animal breeding pond purification apparatus according to the present invention, and FIG. 2 is a block diagram showing an example of a conventional animal breeding pond purification apparatus. 1...Animal rearing pond, 2...Raw water pump, 31...
First sand filter tower, 32...Second sand filter tower, 4...
Hypochlorite tank, 5... Hypochlorite tank, 6... Hypochlorite injection pump, 7... Treated water pump, 8... Pre-ozone reaction tower, 9... Exhaust ozone decomposition tower, DESCRIPTION OF SYMBOLS 10... Ozone generator, 11... Ozone reaction tower, 121... 1st biological activated carbon tower, 122... 2nd biological activated carbon tower. Applicant's agent Patent attorney Takehiko Suzue Figure 2

Claims (3)

[Claims] (1) Water from the animal breeding pond supplied by the raw water pump,
A pre-ozone reaction tower that performs pre-ozonation treatment with ozone to form micro flocs into a state that is easy to filter; a sand filtration tower that performs sand filtration treatment on the treated water from the pre-ozone reaction tower to remove solid content; and the sand An ozone reaction tower that treats the treated water from the filtration tower with ozone from an ozone generator to turn difficult-to-decompose organic matter into decomposable organic matter that is easy to treat; A biological activated carbon tower for removing dissolved organic matter and ammonia through activated carbon treatment and returning the treated water to the animal breeding pond. (2) The animal breeding pond purification device according to claim (1), further comprising an exhaust ozone decomposition tower that decomposes the exhaust ozone remaining from the pre-ozone treatment in the pre-ozone reaction tower and releases it into the atmosphere. An animal breeding pond purification device characterized by: (3) Claim (1) characterized in that surplus ozone from ozone treatment in the ozone reaction tower is supplied to the pre-ozone reaction tower as ozone for pre-ozone treatment.
).The animal breeding pond purification device described in ).