JPS6257697A - Waste water treatment device - Google Patents

Abstract

PURPOSE:To permit the efficient and inexpensive treatment of high-contg. waste water with a waste water treatment device for dung, etc. by partitioning a hermetic tank to provide an anaerobic tank for an anaerobic treatment and a batch tank for making an aerobic treatment of the anaerobically treated water to said device. CONSTITUTION:The inside of the hermetic tank body 24 is partitioned to provide the anaerobic tank 3 for the anaerobic treatment and the batch tank 7 for making the aerobic treatment of the anaerobically treated water treated in the tank 3. Plural sheets of baffle plates 14-16 are provided toward the upper and lower sides in the tank 3 and filter media 4 for capturing the anaerobic bacteria are disposed in the mid-way of the water flow passages formed by the baffle plates. The filter media 8 are disposed in the tank 7 and an air diffusion pipe 9 is disposed to an air feed pipe 21 introduced into said tank from the outside thereof. More specifically, the high-conc. waste water is efficiently treated at a low cost by ingeniously combining the anaerobic treatment and the aerobic treatment and making use of the respective advantages thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a system for treating water such as livestock manure.

B1 Overview of the Invention The present invention is a system for treating wastewater such as livestock manure, etc., in which the inside of one tank that is sealed is partitioned and the wastewater is treated in an anaerobic tank for anaerobic treatment and an anaerobic tank in order from the inflow side.RT99 Anaerobic treatment By installing it in the batch tank 1 that performs aerobic treatment of water, anaerobic treatment and aerobic treatment can be skillfully combined to take advantage of seven advantages. 1. Efficient treatment of high frequency wastewater at low cost. There are nine things you can do to help yourself.

C6 Conventional technology Regarding the treatment of livestock manure, salt has traditionally been returned to farmland as compost, but as the scale of permanent livestock farming has expanded, there has been less farmland to return salt compared to livestock manure. They are simply released into rivers, becoming a source of water mollusc pollution. In order to prevent this water pollution, various sewage treatment techniques are currently being developed and are already being implemented, the central technology of which is the activated sludge treatment method.

D1 Problems to be Solved by the Invention The activated sludge geological method treats wastewater by blowing air into it and propagating microorganisms, but this method has the following drawbacks. ■The construction costs required for treatment facilities are extremely large, and this is a huge economic burden.

■The amount of power required for wastewater treatment is increasing, and the amount of chemicals required for treatment is increasing as the treatment becomes more sophisticated. ■Many facilities, personnel, and costs are required to treat excess sludge generated during treatment. ■A large amount of dilution water is required. ■Resident management by engineers is essential to maintain a certain level of processing function, and it is not suitable for livestock-related processing facilities from the standpoint of invested capital efficiency.

■ Sedimentation and separation of sludge is no longer necessary, making it difficult to prevent the bulking phenomenon that flows out from the sedimentation dam, resulting in the pollution and V-organisms in the inflowing sewage becoming sludge and flowing out.

For this reason, various modifications and improvements have been made to the activated sludge treatment method, but the general trend is that the facilities have become more complex, the management technology has become more difficult, and at the same time the treatment method requires a large amount of energy costs. Yes, it is a huge burden.

The object of the present invention is to provide a biological treatment method for wastewater that overcomes the drawbacks of the above-mentioned activated sludge system.

E8 Problem 9th 0 means to decide the gold tile The wastewater treatment device according to the present invention includes an anaerobic tank for anaerobic treatment that removes ψt#L contained in wastewater by partitioning the inside of a closed tank body, and an anaerobic A batch tank is provided to perform aerobic treatment of anaerobically treated water treated in the tank, and a plurality of baffle plates are provided in the vertical direction in the anaerobic tank, and a water passageway formed by the baffle plates is provided with a plurality of baffle plates in the middle. It is characterized in that it is arranged on a filter medium in the batch tank, and the filter medium is introduced into the batch tank from outside the tank, and an aeration pipe is arranged in the upper air feed pipe.

F. EXAMPLE The present invention will be explained below based on the example shown in FIG.

The first one is a tank-shaped wastewater treatment device that is completely sealed f'L7. Ko! 3 is an anaerobic tank formed by the partition wall λ and the tank wall, and 7 is a batch tank formed by the partition wall λ and the tank wall. ! This is a temporary fA tank formed between anaerobic tank J and batch N7.

To explain further, in the anaerobic tank 3, the tank body 2
Multiple baffle plates 14A from the upper and lower walls of μ, /! .

16 is provided protrudingly, and a zigzag water passage is formed in the anaerobic tank 3. A baffle plate /44 and l! are provided to be located in the middle of the water passage. A filter medium is placed between them.

The filter material may be a sponge, shell, glass peas, etc. as long as it is a material that can trap anaerobic bacteria. Also, /3 is an anaerobic treated water transfer pipe, which connects the anaerobic tank 3 and the temporary adjustment tank via this transfer pipe 13! is communicated.

The temporary adjustment tank t and the batch tank 7 communicate with each other via the batch pump 4 and water-flowing pipe knobs -7t- provided at both ends of the batch pump 4.

Inside the batch tank 7, a filter material t is installed between the baffle plate IT and the partition wall KO, which is attached to both sides of the tank body (in the direction of the front and back of the page). An air supply pipe is introduced into the interior, and an aeration pipe is provided at the tip of the pipe.

This air diffuser pipe is installed at the bottom of the batch tank 7), and the air bubbles released from it circulate through the filter material t'z in the direction of the arrow in the figure, and are also circulated through the air discharge pipe installed at the upper part of the tank wall of the batch tank 7. Hole 2λ
is discharged outward from the Further, 3 is a drainage pipe installed on the tank wall on the side of the batch tank 7, and 10 is a drainage pipe.
A solenoid valve 17 that opens and closes is a baffle plate provided in the batch tank 7 close to the inner end of the drain pipe JJO.

Further, // is a batch treatment water tank from which supernatant water flows out from the batch tank 7 through a drainage pipe JJt, and a baffle plate /lt is provided inside the tank. 12 is a drain port from which batch-treated water is discharged. In addition, anaerobic tank J and adjustment 1i91
From the top of j, there is a pulp Jt, a pipe with a
The tip of this is connected to the generated methane gas extraction pipe 31. Further, λ is an inflow water pump.

Next, the present invention will be explained in detail.

First, inflow water l of highly concentrated wastewater discharged from livestock barns, etc. is flowed into an anaerobic tank J by an inflow water pump. The inflow water I is placed in the anaerobic tank J with baffle plates/4 (.

The action of is and it results in the flow shown by the arrow in FIG. This flow prevents the inflow water l from reacting with the anaerobic bacteria in the anaerobic tank J, and the anaerobic bacteria are captured by the filter medium l in the middle of the flow. Remember, sickling bacteria are captured by the filter media, preventing them from flowing out.

These things increase the effect of anaerobic treatment.

The anaerobically treated water passes through the filter medium 1, and the anaerobically treated water passes through the advection pipe i,
Iyoshi adjustment tank! It is stored in The stored sickle-treated water is fed into batch N7 by a batch pump, and is subjected to aerobic treatment by repeating the three steps of 01 air, precipitation, and υ derivation in this one tank.

Dotted arrows indicate water flow due to aeration. As can be seen from the figure, the microorganisms trapped in the filter media increase the effectiveness of the aerobic treatment. Furthermore, if a large amount of floating residue is mixed into the supernatant water during drainage, the solenoid valve 10 will crystallize, so that 1! The aforementioned baffle plate 7 was attached to prevent floating debris from remaining near the outlet valve 10 piping. The batch treated water that has been aerobically treated in this way is stored in a batch treated water tank/l.
is discharged to the outside. Also, anaerobic tank J and adjustment tank! The methane gas generated is stored in a storage tank (not shown) via a methane gas extraction pipe and used as fuel.

Used for power generation, etc.

G0 Effects of the Invention As stated above, the present invention has the following effects. ■Selectable by combining anaerobic treatment and aerobic treatment
The facility requires a small area and construction costs are low. ■In other words, the strict air treatment is a treatment method that does not require any power, and the batch activated sludge method also requires less power than the conventional activated sludge method, so it is much more efficient than the conventional method. Power costs can be reduced. ■In both anaerobic treatment and batch activated sludge methods, the sludge generation rate is low, and the generation of excess sludge is reduced. ■Dilution water is not required. ■In the case of an anaerobic tank, equipment maintenance is limited to cleaning and processing of the filter media; however, since the operation of the batch tank is automatic, simple maintenance is required. The zero-batch activated sludge method has the following effects: sludge has good settling properties and there is no bulking phenomenon.

FIG.

3... Anaerobic tank, φ, r... Filter medium, 7... Batch tank,
N... air diffuser, / 4c, / j, / 6-.
・Baffle plate, -〇, Kot... Partition walls 1, 21... Air supply pipe, Ko... Tank conversion rate ° I M 1

Claims (1)

[Claims] An anaerobic tank for anaerobic treatment and a batch tank for aerobic treatment of the anaerobic treated water treated in the anaerobic tank are provided by partitioning the inside of the closed tank body, and the anaerobic tank has a vertical direction. In addition to installing multiple baffle plates toward the water, a filter medium for capturing anaerobic bacteria was placed in the middle of the water passage formed by the baffle plates, and a filter medium was installed inside the batch tank and a filter medium was introduced from outside the tank. A wastewater treatment device characterized by having an air diffuser installed in an air supply pipe.