JPS61230788A - Contact type waste water treatment apparatus - Google Patents

Abstract

PURPOSE:To enhance purifying efficiency, by mounting a treatment part filled with a porous ceramics particulate material based on clay and contacted with water flowing over a weir. CONSTITUTION:Water flowed from an upstream side is brought to a flow state accompanying a turblent stream (b) or a vertical stream (c) by a weir 1 and a treatment part 2 provided at positions blocking a water channel and contacted with activated sludge bacteria fixed to the surface of the porous ceramics particulate material C in the treatment part 2 through the passing apertures of the treatment part 2 provided to the upper part of the weir 1 and purified to be flowed down to the front side of the weir. The ceramic particulate material C is prepared by baking clay being a main component thereof having sawdust added thereto and has a porous structure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved contact type wastewater treatment device for purifying rivers and the like with relatively low water depths.

Conventionally, in order to purify flowing water in rivers with low water depth and small flow rate, for example, to purify fluids containing organic wastewater, for example, a weir is installed at a position that blocks the river waterway, and this weir is It is known to provide a packet containing a filter medium to which activated sludge bacteria have been adsorbed, and to perform cleaning by utilizing the bioassimilation action of the activated sludge bacteria within this packet.

However, in this method, the filter medium for the activated sludge bacteria to colonize is simply made of so-called waste materials such as wood, cork, rocks, mine swamps, etc., so the effective surface area for the activated sludge bacteria is extremely small. Therefore, not only does the proliferation of activated sludge bacteria not proceed sufficiently, but also the adsorption capacity is weak, causing problems such as the activated sludge bacteria being washed away by running water, making it difficult to purify running water. There was a strong need for a solution to this problem.

The present invention has been made in order to eliminate the drawbacks of such conventional devices, and the processing section is formed with a new porous ceramic having a pore diameter larger than the diameter of activated sludge bacteria. Significantly improves the proliferation of activated sludge bacteria fixed on the ceramics and their adhesion to the filter media,
The purpose of the present invention is to provide a wastewater treatment device that allows the activated sludge bacteria to purify rivers, etc. with high efficiency, and that can supply dissolved oxygen to promote the natural purification of rivers. This is done by a weir built upright at a position to block a waterway such as a river, and a porous material that is built on the top of the weir and is made by firing clay, which is the main ingredient, with a pore-forming material added to it. The device is comprised of a processing section filled with ceramic granules of the shape of the shape, and a processing section that contacts at least the fluid flowing over the weir and has a through hole through which the fluid flows.

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

In Figures 1 and 2, the weir 1, which is erected to block the waterway of a relatively small-scale river R, etc., is formed with a frame made of concrete, etc., except for the upper treatment section 2. has been done.

The processing section 2 is composed of a weir body framed from a steel body such as stainless steel wire or galvanized wire, and is fixed to the upper part of the weir 1, and the inside thereof is filled with porous ceramic granules C. .

That is, the ceramic granules C have a porous structure made by mainly containing clay and adding pore-forming materials, such as sawdust, rice hulls, urethane powder, etc., and firing the mixture. It has a hardness that does not easily deform and turn into powder, and the surface area necessary for fixing the activated sludge is as large as 600,000 N when the processing section 2 is filled with 1 rrr. Object C has a porous shape with multi-branched oxygen supply channels suitable for culturing a series of bacterial cells constituting activated sludge, such as aerobic bacteria, intermediate bacteria, anaerobic bacteria, etc. It has become.

The raw material for the ceramic granules C is composed of a mixture of clay and silica stone, and a pore-forming material is added to this and fired to form porous ceramics C, which can be used as a filler as described above. You can also use

Further, in the forward direction of the weir 1, as shown in the figure, a stirring device 3 such as a water wheel is provided.

This device 3 is rotated by the falling pressure of the fluid, etc. treated in the processing section 2, and also functions to add dissolved oxygen to the fluid, etc. by this rotation. Usually, the fluid before treatment is It doubles the amount of dissolved oxygen it contains, and also serves to increase the amount of dissolved oxygen in the water flow of the river itself located in front of the weir.

In addition, the weir body framed by a steel body made of stainless steel or the like constituting the processing section 2 may have a forward slope at the top, as shown in FIG. , its shape, for example, height h, width 1, etc., can be changed as appropriate depending on the contamination state of the fluid.

That is, the shape of the processing section 2 is designed in accordance with the upright shape of the weir 1 that fixes the processing section 2 on the upper part, and is different from that in the embodiments shown in FIGS. 1 and 2. gave an explanation targeting the full-width weir for rivers, but
Without being limited to this example, a weir 1 consisting of one or more upright bodies is formed at a small interval at a position that blocks the waterway of a river, and each of the weirs 1 is adapted to fit within the interval and its shape. It is also an intention of the present invention to clean the fluid by providing the processing section 2 at an appropriate location.

It goes without saying that the weirs 1 to be installed on the river at this time are each designed and manufactured with due consideration at least to the strength of the water flow, the quality of the water, and the amount of water.

Next, to explain the operation of the device of the present invention, firstly, the water flow flowing from the upstream side normally advances to the vicinity of the weir 1 as a horizontal flow a at the level W of the water volume shown in the figure. The weir 1 and the processing section 2 provided at a position to block the flow make the flow into a turbulent flow state or a flow state with a vertical flow C as shown in the figure. The water will naturally flow down in the forward direction.

In this way, the water flow is mixed not only by treating the supernatant part of the fluid, but also by the turbulent flow b,
The entire fluid is mixed by fluidization such as vertical flow C, and pollutants that have settled on the bottom of the river are also treated, and dissolved oxygen in the treated water is increased, thereby reducing the amount of water in the treatment section 2. activated sludge fixed on the ceramic granules C filled in the processing section 2, that is, the aerobic bacteria living on the surface of the ceramic granules C in the processing section 2, and the anaerobic bacteria in the middle part of the middle part and the back surface. This is because the processing fluid is cleaned in one step.

In this way, the fluid that has become fluid due to the weir is
Furthermore, the activated sludge bacteria adhering to the surface of the porous ceramic granules C in the treatment part come into contact with the through hole of the treatment part 2 in the upper part of the weir, and the sludge is purified by the bioassimilation action of the sludge bacteria. Then, as it flows down the front of the weir, the amount of dissolved oxygen is doubled by the agitation device 3 such as the water wheel, and it flows, for example, in the direction shown by the arrow in Figure 1 (a), and the dissolved oxygen also flows into the lower flow. By adding oxygen, the natural purification effect of the river itself is promoted, and it can be reused.

As described above, the contact type wastewater treatment bag according to the present invention, which is placed at 4 degrees, has a weir installed upright at a position to block a waterway, and is provided on the upper part of the weir, and has clay as its main component inside, and pores are formed in the bag. This is because it is filled with porous ceramic particles made by adding and firing a material for the treatment, and at least has a processing section that comes into contact with the fluid flowing over the weir and has a through hole through which the fluid flows. The water flow of a river containing pollutants, etc. is changed from a horizontal flow state to a turbulent flow, vertical flow, etc. by a weir installed at a position that blocks the waterway, and the flow state of the river is changed from a horizontal flow state to a turbulent flow, vertical flow, etc. By increasing the amount of oxygen, the activated sludge fungi fixed to the porous ceramic particles housed in the treatment section above the weir can perform cleaning treatment with extremely high efficiency.

Therefore, the processing cost is greatly reduced, and
The fluid to be treated is highly processed, and the amount of dissolved oxygen doubled in the treatment process, etc., further assists natural purification of the lower flow, making it possible to reuse it widely.

[Brief explanation of the drawing]

FIG. 1 (A) is an explanatory diagram showing the usage state of the contact type wastewater treatment device according to the present invention, FIG.
The figure is an explanatory perspective view. 1... Weir 2... Processing section 3... Stirring device C... Ceramic granules R... River a.
...Horizontal flow b...Turbulent flow C...Vertical flow - Ru...Level of water volume

Claims (2)

[Claims] (1) A weir placed upright at a position to block a waterway, and a porous ceramic granule made of clay as a main component and sintered with a pore-forming material added to the weir, installed on the top of the weir. A contact type wastewater treatment device comprising: a treatment section that is filled with materials and has a through hole that contacts at least fluid flowing over the weir and allows it to pass through. (2) The contact type wastewater treatment device according to claim 1, further comprising a stirring device provided in front of the weir.