Purification of lakes, marshes, and ponds

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a method for purifying lakes and ponds.

【0002】

[Problems to be solved by conventional techniques and inventions]

In recent years, there has been increasing interest in the living environment, and purification of water, which is indispensable for maintaining life, is particularly desired. Conventionally, water from lakes and ponds has been used as drinking water, and this drinking water is obtained by purifying raw water by applying necessary treatments. Means of water purification treatment include aggregation on suspension, solid-liquid separation, coagulation on dissolved components, oxidation, biological alteration, adsorption, ion exchange, aggregation filtration on bacteria and viruses, sterilization, and neutralization of acids and alkalis. Etc., and these are used in combination according to the purpose.

【0003】

In general, groundwater does not contain objects to be removed and the water quality is good, so water is supplied only by chlorination, but lake and pond water is purified by removing viscous colloids, algae plankton, and naturally occurring contaminants. It is subject to the above, and is purified by the slow sand filtration method or the rapid filtration method. In the slow sand filtration method, in addition to physical filtration of suspensions, oxidation, adsorption, decomposition, predation of bacteria in water, and predation of aquatic bacteria by a group of microorganisms that propagate on the surface layer of ammonia, iron, manganese, organic components and odor components Bacterial groups inside the sand layer stabilize the nitrogen component. The rapid filtration method is a purification method in which viscous colloids and color colloids in water are agglomerated by adding a coagulant having a positive charge, and then the agglomeration products are separated by precipitation and filtration. Aluminum salts are mainly used as coagulants, and iron salts and polymer substances are partially used as coagulants. Even with the rapid filtration method, some dissolved contaminants are purified in the process of aggregation, precipitation, and filtration by the combined use of an oxidizing agent, adsorption to aluminum hydroxide, and coagulation. In addition, for excessive pollution and offensive odor, the process of oxidation by ozone and adsorption by activated carbon may be added.

【0004】

Physiologically safe water for drinking, or delicious water, is water that contains a moderate amount of mineral substances dissolved from rocks and the like. When ultrapure water is required, processes such as ultrafine filtration, multi-stage vacuum distillation, ion exchange, and reverse osmosis are performed to produce pure water at the required water quality level. In this way, various purification methods have been developed according to the purpose of use. In recent years, the amount of chlorine and chlorine used in the above-mentioned process has increased due to the pollution of raw water, and many people are sensitive to these tastes and odors and dislike them, and the teratogenicity of residual chlorine. Etc. have become a problem. The current purification technology only separates pollutants, and the sludge generated by the separation is dumped into the natural world, and secondary pollution is a problem. Therefore, a vicious cycle of water purification environmental pollution water source pollution is repeated. The present invention has been made in view of such circumstances, and since chlorine-based chemical substances and microorganisms are not used, a method for purifying lakes and ponds that can purify lakes and ponds without secondary pollution of the environment is provided. The purpose is to provide.

【0005】

[Means for solving problems]

In the method for purifying lakes and ponds of the first invention, a predetermined number of holes are provided on the outer peripheral side or bottom of the lake and pond, and negatively ionized granular or powdery Si or SiOx (0 <x 2) is provided in the holes. ) Is enclosed in a glass tube, and the negative charge applying means is embedded in the vertical direction. Here, negative ionization means that a negative charge can be applied. In this method of purifying lakes and ponds, it is considered that negative ions are released from the negative charge applying means to the lakes and ponds, and these negative ions activate oxygen to purify the lakes and ponds by the same action as ozone. Be done.

【0006】

The method for purifying lakes and ponds of the second invention is characterized in that, in the first invention, the hole has a depth of 2 to 5 m below the deepest part of the lake or pond. In this method of purifying lakes and ponds, lakes and ponds are surely purified from the deepest part.

【0007】

In the method for purifying lakes and ponds of the third invention, in the second invention, a mixture of soil and negatively ionized granular or powdered Si or SiOx (0 <x 2) is put into the pores. , The negative charge applying means is embedded. In this method of purifying lakes and ponds, the rate of purification can be increased.

【0008】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be specifically described with reference to the drawings showing the embodiments thereof. FIG. 1 is an elevational view showing an ion rod 3 as a negative charge imparting means applied in this embodiment. This ion rod 3 is disclosed in Japanese Patent Application Laid-Open No. 9-220288, and 7 kg of granular or powdery Si or SiOx (0 <x 2) 2 is placed in a glass tube 1 having a diameter of 10 cm and a length of 1.5 m. It is enclosed and sealed. Si or SiOx2 is previously charged into a negatively ionized quartz crucible for a predetermined time, and is negatively ionized, that is, given a negative charge. In order to ionize the quartz crucible, negative ions are supplied to the quartz crucible for about 3 hours using the static electricity reduction and removal device proposed in Japanese Patent Application No. 9-243228.

【0009】

The ion rod 3 is buried in the ground around the lake and the pond. FIG. 2 is a plan view of the lake in this embodiment, and FIG. 3 is a side view thereof. Ion rod burial holes 5 are provided at three locations along the outer circumference of the lake 4 at approximately equal intervals. The ion rod burial hole 5 is excavated to a depth of 2 to 5 m below the deepest part of the lake 4 using a boring machine. Its diameter is approximately 20 cm. An ion rod 3 is embedded in the bottom of the ion rod burial hole 5 so that the longitudinal direction coincides with the vertical direction. The ion rod 3 is embedded by charging a mixture of 50 kg of negatively ionized granular or powdered Si or SiOx (0 <x 2) and soil into the ion rod burial hole 5. Si or SiOx is negatively ionized by being put into a negatively ionized quartz crucible for a predetermined time in the same manner as described above.

【0010】

For the ion rod 3, the burial place and the number of burials are appropriately set according to the shape of the lake and the pond 4, the degree of pollution, and the like. 4, 5 and 6 are plan views showing the positions where the ion rod burial holes 5 are provided in other embodiments. As shown in the plan views of FIGS. 4 and 5, the ion rod burial holes 5 are provided in a well-balanced manner along the shapes of the lake and the pond. The number of ion rod burial holes 5 is increased when the degree of pollution of lakes and ponds is high. In the case of the aquaculture pond shown in the plan view of FIG. 6, ion rod burial holes 5 are provided at the four corners and the central portion.

【0011】

Next, the result of burying the ion rod 3 around the lake and examining the water quality of the lake over time is shown. The lake where the change in water quality was investigated is located in Ishikawa Prefecture, and has an elliptical shape as shown in Fig. 2. The long axis is approximately 2500 m, the short axis is approximately 500 m, the water depth is approximately 2 m, and the amount of water is approximately 2.5 million m.³It is a lagoon. Ion rods 3 are buried at approximately equal intervals on the outer circumference of this lagoon, and the transparency, dissolved oxygen amount (DO), chemical oxygen demand (COD), and nitrogen amount (TN) at a depth of 1.0 m are buried every week. , Phosphorus (TP) and Ammonia Nitrogen (NH)₄-N) was investigated. The results are shown in FIGS. 7 to 12. From Figures 7 to 12, transparency, DO, COD, TN, TP and NH₄It can be seen that all items of -N improved over time. If the water temperature falls below 15 ° C, it will affect the water quality survey, but during this water quality survey period, even the lowest water temperature will exceed 17.1 ° C and 15 ° C, so the effect of water temperature does not have to be considered. .. In addition, as a result of burying the ion rod 3, it was observed that juvenile mullets, whose existence was confirmed until 1960, were swimming in a group at the river inlet. As described above, it was confirmed that the lagoon was surely purified, but this is because negative ions are released from the ion rod 3, and these negative ions activate oxygen, which has the same effect as that of ozone. It is probable that it caused. Since this purification method does not use chlorine-based chemical substances and microorganisms, it does not cause secondary pollution of the environment.

【0012】

In the above embodiment, the case where the ion rod 3 having a diameter of 10 cm and a length of 1.5 m is used is described, but the present invention is not limited to this, and the size of lakes and ponds, the degree of contamination, etc. Depending on the size, ion rods 3 having a diameter of 13 cm and a length of 1.8 m or ion rods 3 having a diameter of 21 cm and a length of 2.1 m can be used. The larger the ion rod 3, the greater the purification effect of lakes and ponds. The burial depth of the ion rod 3 is not limited to a depth of 2 to 5 m below the deepest part of the lake or pond, but when buried at a depth of 2 to 5 m below the deepest part of the lake or pond, The lake can be reliably purified from the deepest part. Further, in the above-described embodiment, the ion rod 3 is embedded by charging a mixture of soil and negatively ionized Si or SiOx into the ion rod burying hole 5, but the present invention is not limited to this. .. However, if the soil is mixed with negatively ionized Si or SiOx, the purification rate of lakes and ponds can be increased.

【0013】

[Effect of the invention]

As described in detail above, according to the method for purifying lakes and ponds of the first invention, a predetermined number of negative charge-imparting means in which negatively ionized granular or powdery Si or SiOx is sealed in a glass tube are provided. And because it is buried vertically on the outer periphery or bottom of the pond, negative ions are released into the lake and pond from the negative charge applying means, and the negative ions activate oxygen to purify the lake by the same action as ozone. It is thought that. According to this purification method, no chlorine-based chemicals and microorganisms are used, so that the environment is not secondarily polluted.

【0014】

According to the lake purification method of the second invention, since the negative charge applying means is embedded at a depth of 2 to 5 m below the deepest part of the lake and the pond, the lake and the pond are surely purified from the deepest part.

【0015】

According to the method for purifying lakes and marshes of the third invention, a mixture of soil and negatively ionized granular or powdered Si or SiOx is put into a hole for burying the negative charge applying means to provide the negative charge applying means. Since it is buried, the speed of purification can be increased.

[Simple explanation of drawings]

[Figure 1]

It is an elevation view which shows the ion rod applied in the purification method of a lake and a pond which concerns on this invention.

[Figure 2]

It is a top view which shows the position where the ion rod burial hole is provided in one Embodiment of the purification method of a lake and a pond which concerns on this invention.

[Fig. 3]

It is a side view of FIG.

[Fig. 4]

FIG. 5 is a plan view showing a position where an ion rod burial hole is provided in another embodiment of the method for purifying lakes and ponds according to the present invention.

[Fig. 5]

FIG. 5 is a plan view showing a position where an ion rod burial hole is provided in another embodiment of the method for purifying lakes and ponds according to the present invention.

[Fig. 6]

FIG. 5 is a plan view showing a position where an ion rod burial hole is provided in another embodiment of the method for purifying lakes and ponds according to the present invention.

[Fig. 7]

It is a graph which shows the result of having investigated the time course change of the transparency of a lake.

[Fig. 8]

It is a graph which shows the result of having investigated the time-dependent change of the dissolved oxygen amount of a lake.

[Fig. 9]

It is a graph which shows the result of having investigated the change with time of the chemical oxygen demand of a lake.

[Fig. 10]

It is a graph which shows the result of having investigated the change with time of the nitrogen content (TN) of a lake.

[Fig. 11]

It is a graph which shows the result of having investigated the time-dependent change of the phosphorus amount (TP) of a lake.

[Fig. 12]

Ammonia nitrogen in the lake (NH₄It is a graph which shows the result of having investigated the time-dependent change of -N).

[Explanation of symbols]

1 glass tube 2 Si or SiOx 3 Ion rod 4 Lakes and ponds 5 Ion rod burial hole