CN205527842U - Special air supporting water treatment facilities of organic waste water - Google Patents

Abstract

The utility model relates to a special air flotation water treatment device for organic waste water, which belongs to the special air flotation water treatment device for organic waste water. It consists of a medicine storage tank outside the pool, a porous dosing device and an air flotation treatment tank, and is characterized in that the medicine storage tank outside the pool is composed of two flocculant storage tanks, polyaluminum chloride and polyacrylamide; the porous dosing device is a connected pool The uniformly spaced porous pipes for mixing and adding medicine from the external medicine storage tank to the air flotation treatment tank; Consists of mud discharge outlet and clean water outlet. Compared with the known technology, the utility model removes the premixed stirring tank for adding medicine separately, and directly designs this function in the air flotation tank, which not only reduces the occupied area, but also improves the work efficiency.

Description

A special air flotation water treatment device for organic wastewater

technical field

The utility model relates to a special air flotation water treatment device for organic waste water.

Background technique

At present, the design core of general-purpose air flotation equipment is basically based on the flotation method in the second section of Chapter 4 of the book "Industrial Wastewater Treatment Technology" (Zou Jiaqing). According to the book, most of the equipment works as follows: the dissolved medicine is pumped into the premix tank through the dosing pump, and flocculated by stirring and mixing in the premix tank. The road enters the air flotation tank for solid-liquid separation by flotation to obtain clean water. This method has been widely used, but the application of this equipment in the treatment of organic wastewater has the following disadvantages:

1. Organic wastewater generally has a high chemical oxygen demand value, and flocculants, polyaluminum chloride (PAC) and polyacrylamide (PAM) need to be added before entering the air flotation equipment. The design needs to be equipped with 2 pre-mixing tanks for dosing and 2 mixers to add PAC and PAM respectively for flocculation. Therefore, the operation is complicated and the floor area is large. If the flocculant is directly added to the air flotation tank, it will cause uneven mixing and poor flocculation effect.

2. The amount of sludge produced by organic wastewater is large. When using conventional air flotation equipment, a certain amount of flocs will remain in the mud-water mixture pipeline, which will block the pipeline after a period of operation, so the pipeline should be cleaned regularly. Going back and forth to remove the tubing is a very tedious process. In addition, when the equipment is not in use, some flocs will be deposited at the bottom of the air flotation tank. The purified water in the tank needs to be pumped out every week, and the operator enters the tank to clean up the sediment at the bottom. Therefore, regular maintenance is required for use.

Contents of the invention

The purpose of the utility model is to simplify the operation steps of organic waste water treatment, overcome pipeline blockage, improve work efficiency, and reduce occupied area. The technical solution of the utility model is to design a special air flotation water treatment device for organic wastewater, which is composed of a storage tank outside the pool, a porous dosing device and an air flotation treatment tank, wherein the storage tank outside the pool includes polyaluminum chloride and poly There are two flocculant storage tanks for acrylamide; the porous dosing device is an evenly spaced porous pipe that connects the storage tank outside the tank to mix and add medicine to the air flotation treatment tank; the air flotation treatment tank consists of an upper baffle, a lower baffle, and an agitator , Residue filter machine, intake pipe, slag outlet, clapboard, mud outlet, clean water outlet.

Compared with the known technology, the positive effect of the utility model is that the utility model can ensure that the medicament can be directly added into the air-float treatment tank to quickly and fully contact with the waste water. Install a multi-hole dosing device and a set of agitators above the intake exhaust pipe, which is conducive to full mixing. When flocculation occurs, most of the sludge adheres to the air bubbles, follows the air bubbles to rise to the liquid surface of the air flotation treatment tank, and is scraped away by the slag scraper above. The equipment is equipped with a sludge discharge pipeline at the bottom of the flotation tank, and a small part of the sludge can be discharged by the sludge discharge pipeline when it settles to the bottom, which greatly reduces the workload of cleaning the sludge at the bottom of the flotation tank in the tank, which not only reduces the occupied area area, and improved work efficiency.

Description of drawings

Fig. 1 is a structural representation of the utility model

Figure 2 is a schematic diagram of a porous dosing device

1. Waste water inlet 2. Porous dosing device 3. Air intake pipe 4. Slag scraper 5. Slag discharge port

6. Clean water outlet 7, mud outlet 8, polyaluminum chloride storage tank 9, polyacrylamide storage tank 10, agitator

11. Air flotation treatment pool 12. Separator 13. Upper baffle 14. Lower baffle.

detailed description

Below in conjunction with accompanying drawing, describe structure of the present utility model and using method in detail:

As shown in the figure, the utility model is composed of medicine storage tank (8) (9) outside the pool, porous medicine dosing device (2), and air flotation treatment pool (11). Among them, the medicine tank outside the pool includes two flocculant storage tanks (8) (9) of polyaluminum chloride and polyacrylamide; the porous dosing device (2) is connected to the medicine storage tank (8) (9) outside the pool to the air flotation The uniformly spaced porous pipes for mixing and dosing in the treatment tank (11); the air flotation treatment tank (11) consists of an upper baffle (13), a lower baffle (14), an agitator (10), and an air intake pipe (3 ), residue filter (4), slag outlet (5), clapboard (12), mud outlet (7), clear water outlet (6). During operation, the organic waste water enters the air flotation treatment tank (11) through the waste water inlet (1). The polyaluminium chloride and polyacrylamide from the porous dosing device (2) are stirred with the air bubbles coming out of the air intake pipe (3) and fully mixed to react. Flocculation produces a large amount of sludge, which flows to the slag scraper (4) as the air bubbles rise, and the sludge is separated by the slag scraper to the slag discharge port (5), and the separated clean water flows out from the clean water outlet (6) . The operator periodically opens the sludge outlet (7) to discharge the sludge remaining near the intake pipe (3).

Claims (1)

1. A special air flotation water treatment device for organic wastewater, which is composed of a medicine storage tank outside the pool, a porous dosing device and an air flotation treatment pool, and is characterized in that the medicine storage tank outside the pool is made of polyaluminum chloride and polyacrylamide two a flocculant storage tank; the porous dosing device is an evenly spaced porous pipe connecting the medicine storage tank outside the pool to the air flotation treatment tank; the air flotation treatment tank is composed of an upper baffle, a lower baffle, an agitator, It is composed of exhaust pipe, slag filter machine, slag discharge port, clapboard, mud discharge port and clean water outlet.