JP2001129533A - Removed solid matter delivery system in effective substrate addition device of waste water treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a removed solid matter delivery system in an effective substrate addition device of waste water treatment equipment. SOLUTION: In an effective substrate addition device of waste water treatment equipment, the removed solid matter from the reactant solution (3) can be automatically carried out from a removing device (8) together with the reaction product solution (4) by using the same pipe as a part of the inflow pipe (1) and a part of the outflow pipe (2) before the separation tank (5) or the removing device (8). Thus, a washing apparatus of the removing device (8) becomes unnecessary. Further maintenance work of the removing device (8) is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an apparatus for removing solids in an effective substrate adding apparatus of a wastewater treatment apparatus. Figure 1 shows the details of the invention. The effective substrate addition device sends a part of the wastewater from the wastewater treatment device to the reaction tank (6) as a reaction solution [hereinafter referred to as a pre-reaction (3) solution]. In the reaction tank (6), the effective substrate is dissolved or cultured in the pre-reaction solution (3). By adding this liquid [hereinafter referred to as post-reaction liquid (4)] to the wastewater treatment apparatus, the effective substrate is added to the wastewater treatment apparatus. In this effective substrate addition device, the reaction tank (6)
When the pre-reaction liquid (3) flows into the reaction vessel (3), solids in the pre-reaction liquid (3) flow between the reactants in the reaction section (7) of the reaction tank (6) to close the reaction section (7). . Therefore, it is necessary to remove solids from the pre-reaction liquid by the removal device (8). The removing device (8) is formed by a wire net or a screen. In the apparatus for removing solids in the apparatus for adding an effective substrate, a pipe for a pre-reaction liquid (3) [referred to as an inflow pipe (1)] is a pipe for adding a post-reaction liquid (4) to a wastewater treatment apparatus [outflow pipe (2). )) Before the separation tank (5) or the removing device (8). By making a part of the inflow pipe (1) identical to the outflow pipe (2) in front of the separation tank (5) or the removing device (8), when the post-reaction liquid (4) is added to the wastewater treatment device, The solids removed from the pre-reaction solution (3) by the removal device (8) can be carried out to the wastewater treatment device together with the post-reaction solution (4).

[0002]

2. Description of the Related Art FIG. In the prior art, an inflow pipe (1) for allowing the pre-reaction liquid (3) to flow from the wastewater treatment apparatus to the effective substrate addition apparatus, and an outflow pipe (for adding the post-reaction liquid (4) from the effective substrate addition apparatus to the wastewater treatment apparatus). And 2) were separate. Therefore, in order to automatically remove solids from the removing device (8), a washing device was required.

[0003]

FIG. 1 shows a conventional technique. In the prior art, the inlet pipe (1) and the outlet pipe (2) are separate. Therefore, the solids removed from the pre-reaction solution (3) by the removal device (8) could not be carried out to the wastewater treatment device together with the post-reaction solution (4). The removed solids need to be removed from the removing device (8) by washing the screen or wire netting with a washing device or the like.
The removed solid had to be carried out of the apparatus.

[0004]

According to the present invention, there is provided an inflow pipe (1).
Of the outlet pipe (2) in front of the separation tank (5) or the removing device (8), thereby making the removing device (8)
The solids removed from the pre-reaction liquid (3) together with the post-reaction liquid (4) can be carried out to a wastewater treatment apparatus. This eliminates the need for a cleaning device for the removing device (8). In addition, since no solid matter is generated in the apparatus, it is not necessary to carry out the solid matter outside the apparatus for processing.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. First Example An embodiment in which a water tank [hereinafter referred to as a separation tank (5)] is installed beside a reaction tank (6) is shown in FIG. Shown in The pre-reaction liquid (3) is sent from the wastewater treatment apparatus to the reaction tank (6).
The fed pre-reaction liquid (3) flows in the separation tank (5) in a downward flow or an upward flow, and passes through the reaction section (7) of the reaction tank (6). Thus, the pre-reaction solution (3) dissolves or cultures the effective substrate in the reaction section (7) of the reaction tank (6).
When the pre-reaction liquid (3) in the separation tank (5) flows upward, the removing device (8) is installed only at the upper part of the separation tank (5) or at the upper and lower parts. When the pre-reaction liquid (3) in the separation tank (5) flows downward, the removing device (8) is installed at the lower part or upper and lower parts. At this time, a part of the inflow pipe (1) and the outflow pipe (2) to the separation tank (5) are made identical before the separation tank (5) as shown in FIG. The pre-reaction solution (3) flows into the separation tank (5) from the wastewater treatment device via the inflow pipe (1). Liquid after reaction (4)
Is mixed with the solids removed from the pre-reaction solution (3) by the removal device (8) and added to the wastewater treatment device via the outflow pipe (2). By installing two or more switching valves (9) at the connection of the inflow pipe (1), the injection point of the post-reaction liquid (4) into the wastewater treatment apparatus can be changed. SECOND EXAMPLE FIG. 2 shows an embodiment in which a separation tank (5) is installed with a partition wall beside the reaction tank (6). Also in this case, the removing device is installed at the upper and lower positions between the separation tank (5) and the reaction tank (6) as in the first example. Third example Without the separation tank (5),
FIG. 3 shows an embodiment in which a removing device (8) is directly installed in a piping line instead of the separation tank (5). In this case, the inflow pipe (1) and the outflow pipe (2) are made identical before the removing device (8).

[0006]

According to the present invention, the solids removed from the pre-reaction liquid (3) can be discharged together with the post-reaction liquid (4) to the waste water treatment apparatus in the removal solids discharge device in the effective substrate addition device of the waste water treatment device. A cleaning device for the device (8) becomes unnecessary. In addition, since no solid matter is generated outside the apparatus by the removing device (8), external treatment of the removed solid material is not required.

[Brief description of the drawings]

FIG. 1 shows an embodiment (first example) of the present invention.

FIG. 2 shows an embodiment (second example) of the present invention.

FIG. 3 shows an embodiment (third example) of the present invention;

FIG. 4 is a conventional technique.

[Explanation of symbols] (1) Inflow pipe (2) Outflow pipe (3) Pre-reaction liquid
(4) Liquid after reaction (5) Separation tank (6) Reaction tank (7) Reaction section
(8) Removal device (9) Switching valve

Claims (1)

[Claims] 1. A solid substance is removed from a pre-reaction solution (3) by a removing device (8). The removed solids form part of the inflow pipe (1) and part of the outflow pipe (2) in a separation tank (5) or a removal device (8).
By carrying out the same operation before the reaction, it can be carried out to the wastewater treatment apparatus together with the post-reaction liquid (4). Removal solids discharge device in effective substrate addition device of wastewater treatment device characterized by this