JP2000117012A - Metallic membrane filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate and remove fine solids and non-solid soft floating sludge and to dissolve clogging of the membrane by holding spaces in screens made by laminating belt like steel plate-made fixing plates and working plates by a specified distance at a little slidable state, making a water inflow side of a water bath airtight, and providing a liquid filtrate path at a sewage inflow pipe and the upper part. SOLUTION: The metallic membrane 11 made by laminating the steel plate-made fixing plates 1 and the working plates 2 with a little space and integrally connected with a fixing shaft 3 and a working shaft 4, is installed in the water bath 7 in an airtight state at a filtering side, and the sewage is force-fed from the inflow pipe 8 to filter it at the lower surface side, and the liquid filtrate is transported from the upper part via a water path 9. The working plates 2 and the working shaft 4 are linked to a driving shaft 10 to reciprocate the working plates 2, then the sewage flows from the lower part fixing plate side surface into the spaces with the fixing plates 1 and the working plates 2 via the inflow pipe 8, and the sludge stopped with a steel plate, remaining and clogging the inlet is excluded with a reciprocating movement of the working plates 2, then a new filtering surface is prepared, and remaining sludge at the inflow side is transported with a sludge discharge pipe 12. Thus, the fine solid sludge and the soft nonsolid floating sludge can be separated and removed, and the clogging can be mechanically dissolved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a primary treatment for removing polluted solids such as sewage, agricultural settlement drainage, and industrial wastewater, and sludge concentration, and belongs to the field of wastewater treatment.

[0002]

2. Description of the Related Art Conventionally, as a method for removing or removing polluted solid matter in wastewater, (1)
There are a screen method, (2) a precipitation method, (3) a flotation method, and (4) a filtration method. The outline is as follows. (1) In the screen method, coarse suspended solids are removed using a screen. Screen width is 0.5m
/ M to 100 m / m. (2) In the sedimentation method, sedimentable contaminants having a specific gravity larger than water are settled and removed. If the settling time is lengthened, fine contaminants can be settled, but the area of the water tank increases. (3) The flotation method is a method in which air bubbles are mixed with fine and floating contaminants to make them float and then removed. (4) The filtration method is to remove fine polluted solid matter by sand filtration or the like. Recently, the number of cases of performing filtration using a membrane is increasing.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to remove fine floating contaminants which cannot be removed by a primary treatment by a conventional screen method. That is, it is an object of the present invention to separate and remove fine solids and non-solid and soft floating contaminants based on a simple screen device, and to always eliminate clogging of the membrane.

[0004]

According to the present invention, a gap between screens made of a strip-shaped steel sheet is reduced to almost zero.
The steel plates are stacked one by one as a fixed plate 1 and a working plate 2, and mounted on the fixed shaft 3 and the working shaft 4 in a sliding manner.
0, the operating plate 2 is reciprocated together with the operating shaft 4, the collars 3a and 4a are provided to keep the gap between the steel plates constant, the inflow side in the water tank 7 is installed in a closed state, and the sewage inflow pipe 8 is provided. , A filtrate channel 9 is provided at the top.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is configured as described above, and filters and separates contaminants in a gap between a steel plate (1) and a steel plate (2). The fixed metal plate 11 and the operating plate 2 are overlapped and fixed and connected by the fixed shaft 3 and the operating shaft 4 to form an integrated metal film 11 in a water tank 7.
Inside, the filtration side is installed in a closed state, and sewage is press-fitted through an inflow pipe 8, filtered at a lower surface side, and the filtrate is transferred from an upper portion through a water passage 9 as shown in FIG. 2. When the gap between the fixed plate 1 and the operation plate 2 is closed by contaminants, the operation plate 2 reciprocates by the drive rod 10 and scrapes and contacts the contaminants as shown in FIGS. 2 (a), 2 (b) and 2 (c). The surface is cleaned and a new filtration surface is constructed to continuously filter.

[0006]

1 is a sectional view of an embodiment of the present invention, FIG. 3 is an assembled plan view of a metal film, FIG. 4 is a side view, and FIG. The metal film main body 11 is installed in the water tank 7 such that the inflow side is hermetically closed, and the inflow pipe 8, the drainage pipe 12, and the filtered water channel 9 are provided. Each operation plate 2 and the operation shaft 4 are connected to the drive shaft 10 to reciprocate the operation plate 2. The sewage is injected from the inflow pipe 8,
Although it flows into the gap with the working plate from the side of the lower fixed plate, the contaminants are blocked by the steel plate and remain to block the entrance. The working plate 2 reciprocates to remove accumulated contaminants and create a new filtration surface. The sludge stored on the inflow side is transferred by the sludge pipe 12.

[0007]

According to the present invention, by filtering sewage using the metal membrane filtration device of the present invention, fine solid contaminants as well as soft and non-solid floating contaminants can be efficiently separated and removed, and clogging is always prevented. Smooth operation can be performed while eliminating mechanically. Further, by adjusting the membrane gap, filtration can be performed with a gap of 0.2 mm or less by a conventional screen method.

[Brief description of the drawings]

FIG. 1 is an installation sectional view of a metal membrane filtration device.

FIG. 2 is a detailed operation diagram of a metal film.

FIG. 3 is a plan view of a metal film main body.

FIG. 4 is a side view of a metal film main body.

FIG. 5 is a cross-sectional view of metal film bodies A to A ′.

[Explanation of symbols]

 1 is a fixed plate 2, an operating plate 3, a fixed shaft 3a, a collar 4, an operating shaft 4a, a collar 5, a fixed fitting 6, a fixed fitting 7, a water tank 8, an inflow pipe 9, Filtration water channel 10, drive shaft 11, metal membrane body

Claims (2)

[Claims] Claims: 1. A screen device for installing a plurality of strip-shaped steel sheets in parallel in a water channel or the like so as to appropriately maintain a gap between the steel sheets and to remove solid contaminants. Contact each other and keep the contact pressure constant,
A metal membrane filtration device characterized by filtering a contaminant while flowing sewage in a state where pressure can be maintained on a sewage inflow side by a membrane formed by metal surface roughness. 2. The metal membrane filtration device according to claim 1, wherein the strip-shaped steel plates are alternately used as a fixed plate (1) and a working plate (2), and attached to a plurality of fixed shafts (3) and working shafts (4), respectively. The gap between the steel plates can be adjusted in the axial direction, and the operating plate (2) reciprocates vertically or obliquely with respect to the fixed plate (1).
A metal membrane filtration device characterized by regenerating a new metal filtration membrane and performing continuous filtration.