JPH05317879A - Floating type water purifying equipment - Google Patents

Abstract

PURPOSE:To promote a purifying function, to save the quantity of the air required for aeration and to decrease the amt. of the sludge to be generated by disposing bacterium carrying bodies in which anaerobic bacteria and aerobic bacteria can dwell in a diffusing part for the water sucked up by an air lift mechanism in a suspension type. CONSTITUTION:The cord-like bacterium carrying bodies 1 where the anaerobic bacteria and the aerobic bacteria can dwell are fixed by circular metallic frames 3 and 4. An air feed pipe is introduced into a cylinder 5 existing in the central part thereof and the air is diffused to a fine bubble form by an air diffusion pipe 7. The water is thus made to flow by the effect of the air lift pump 11 and the purified water is eventually diffused for ways near the water surface. The water in the bottom is sucked to receive the 'replenishment of oxygen and the purified water is eventually diffused in the upper layer by this structure. The water of a pond is cleaned gradually by spending time. The sewage in the septic tank is purified by the simple equipment in such a manner.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Object of the invention [Industrial field of application] The present invention relates to purification of sewage in a septic tank and purification of water such as lakes and marshes.

[Prior Art] Conventionally, for the purification of sewage, it has been common to use aerobic bacteria to mix a certain amount of sludge into the sewage and continue the aeration to purify the sewage. With this method, a large amount of sludge was generated, and a large amount of air required for aeration was required, and it was necessary to manage returned sludge. Therefore, a huge digestion tank and a precipitation tank have been required. In addition, as a measure against water-bloom in lakes, a method of pushing the water-bloom into the water area where the sun's rays do not reach is used by exchanging the upper and lower layers of the lake with an intermittent mass aeration method. Economy is lost in meters and above 5
It becomes an impossible area within meters.

[Problems to be Solved by the Invention] The present invention utilizes the principle of purifying the water in a stream of water by simply placing the cord-shaped carrier in a slight stream of water. Then, by giving the function of diffusing to the upper layer, the whole water is tried to be purified over time. The water absorption part has a cylindrical structure, and even if aeration is performed in the middle part, water flows from the bottom opening due to the effect of the upward flow, so the aeration depth may be about 1/3 of the water depth. In the string-shaped carrier,
Anaerobic bacteria grow in the central part and aerobic bacteria grow in the outer peripheral part, and both have the property that their corpses and secretions are the food of the other party, and therefore the sludge generated by water purification is The amount is only a fraction of that of the conventional method, and sludge treatment is generally not troublesome.

(2) Structure of the invention [Means for solving the problem] A float is provided in the attachment frame of the upper cord-shaped carrier, and a weight is attached to the opening of the lower cylinder.
Make the whole floating. The attachment frame of the string-shaped carrier has an upper and lower two-stage structure, and the string-shaped carrier is vertically arranged with a small gap in the middle part. A membrane-like or plate-like structure that does not allow water to pass between the attachment frame of the lower string-shaped carrier and the central tube, and the central tube stands upright in water. Aeration air is 1 / of the water depth
A thin air tube is attached to the center of the cylinder so that air can be ejected at three positions, and air is ejected from that position. Thus, a certain flow of water is generated by the air lift pump theory, water is taken in from the bottom of the center cylinder, passes through the string-shaped carrier between the frame metal, and is discharged to the upper water surface, during which sewage is purified. .. The circulating water is intolerable and oxygen is replenished.
In the case of general sewage, the cord-shaped carrier does not endure the metabolism and some sludge is peeled off, but the amount is slight and it is not necessary to replace the string.

[Action] In the string-shaped carrier, anaerobic bacteria grow in the central part and aerobic bacteria grow in the outer peripheral part, and their secretions and corpses are digested by each other as food of the other party. Generation of sludge is very small. However, if it is not always installed in a place with a constant water flow, the effect will not be obtained. Therefore, if a circular metal frame is prepared and the structure is such that water flows in all directions from the center of the metal frame, a cord-shaped carrier may be placed at the position of the metal frame.
There is also an advantage that water can be supplemented with oxygen. The rotary disk cleaning method creates a dead space at the bottom, but this method does not. Moreover, since the static air pressure required for aeration is about 1/3 of the water depth, it requires less power and is effective.

[Embodiment] An embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing the structural action of a floating water purification system used in a pond where carps are bred. String-shaped carrier 1
Are fixed by circular metal frames 3 and 4. The float 2 is fixed to the upper metal frame 3, and the lower metal frame 4 is connected to the cylinder 5 located at the center by a frame, and the film 6 is attached to the frame. An air supply pipe is introduced into the inside of the cylinder 5 in the central portion, and air is ejected from the air diffusion pipe 7 in the form of fine bubbles. The cylinder 5 has a weight 8 attached to the bottom thereof and does not endure it and keeps the cylinder vertical. The length of the tube 5 is determined so that the bottom of the tube 5 keeps a certain distance from the bottom of the water. Thus, the water flow flows in the direction of the arrow by the action of the air lift pump, and the purified water diffuses in all directions near the water surface. By this structure, the water at the bottom is sucked in, oxygen is supplied, and the purified water is diffused to the upper layer, and the water in the pond gradually becomes clean over time. FIG. 2 shows the structure of the cord-shaped carrier used for this water treatment. Around the core material, fine fibers made of polypropylene or polyvinylidene chloride are incorporated in a continuous scrubber shape, providing a hotbed for bacteria and microorganisms.

(3) Effects of the Invention As described above, the present invention has not only the function of purifying the wastewater in the septic tank with simple equipment, but also the function of purifying the water area polluted by general domestic wastewater. .. The power required for aeration is extremely small because it requires less static pressure and is sufficient. A large number of standard equipment can be installed according to the water area, and its range of use is wide.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view showing the structure of one embodiment and its operation. FIG. 2 is a plan view of the cord-shaped carrier used in the embodiment of FIG. FIG. 3 is a cross-sectional view of the string-shaped carrier used in the embodiment of FIG. 1 string-shaped carrier, 2 float, 3 upper metal frame, 4 lower metal frame 5 cylinders, 6 membranes, 7 air diffusers, 8 weights, 9 water surface, 10 bubbles, 11
Air pump,

Claims (1)

[Claims] By placing a carrier that can coexist with anaerobic bacteria and aerobic bacteria in the diffusion part of the water sucked up by the floating airlift structure, suck up the sewage near the bottom of the water and replenish oxygen,
Floating type water purification equipment that purifies water by the action of microbes and diffuses the purified water near the water surface.