CN216236195U

CN216236195U - Sewage adds medicine and thoughtlessly congeals-flocculation equipment

Info

Publication number: CN216236195U
Application number: CN202122659632.7U
Authority: CN
Inventors: 李明; 袁中秋; 鄢紫; 王睿星; 吴春旭
Original assignee: Engelbart Wuhan Ecological Technology Co ltd
Current assignee: Engelbart Wuhan Ecological Technology Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-08
Anticipated expiration: 2031-11-02

Abstract

The utility model provides a sewage adds medicine and thoughtlessly congeals-flocculation equipment, including coagulating basin, flocculation basin, air stripping pipe and wet return, the wet return both ends respectively with coagulating basin and the tangent connection of flocculation basin, the vertical setting of air stripping pipe, be responsible for the air stripping and air stripping intake pipe including the air stripping, the air stripping is responsible for the first water piping connection of bottom and coagulation bottom, the top and the tangent connection in flocculation basin upper end that the air stripping was responsible for, air stripping intake pipe one end is responsible for the intercommunication with the air stripping, the fan is connected to the other end, the tangent inlet tube that is provided with in top of coagulating basin, the tangent second outlet pipe that is provided with in bottom of flocculation basin, the wet return position is higher than the position of first outlet pipe and second outlet pipe, be provided with first dosing point and second dosing point on coagulating basin and the flocculation basin respectively. The coagulation tank and the flocculation tank are connected by the air stripping pipe and the water return pipe, sewage and the medicament are fully mixed by adopting air stripping stirring and hydraulic stirring modes, simultaneously, the formation of a flocculating body is not influenced, and the efficiency and the effect of flocculation reaction can be effectively improved.

Description

Sewage adds medicine and thoughtlessly congeals-flocculation equipment

Technical Field

The utility model relates to sewage coagulation equipment, in particular to sewage dosing coagulation-flocculation equipment.

Background

Some pollutants in the sewage, such as heavy metal elements or phosphorus-containing pollutants, are usually removed by a chemical method of dosing coagulation, i.e., a coagulant/flocculant is added into the wastewater to coagulate and flocculate colloidal particle substances in the wastewater, so that the colloidal particle substances are separated out, and the purpose of purifying the wastewater is achieved.

At present, two common coagulation devices are provided, one of which is that stirring devices are arranged in a coagulation pool and a flocculation pool, and can be used for fully stirring and mixing. According to the existing researches on the stirring machine, when the installation position, the angle and the like of the stirring equipment are designed to be more scientific, more than 90 percent of the mixture in the pool can be uniformly stirred; the second is a baffling coagulation tank, namely a plurality of baffle plates are arranged in the coagulation tank and the flocculation tank, so that the flocculation reaction time can be fully ensured. Both of these devices have some problems: (1) in the coagulation reaction, the mixing effect of the mixer is good, but during the flocculation reaction, the propeller of the electric mixer often interferes with the formation of a flocculating constituent and easily breaks the flocculating constituent, and even if the rotating speed selected by the flocculation mixer is low in practical application, the flocculation reaction is still damaged, so that the flocculation effect is not ideal; (2) the baffling reaction tank adopts a hydraulic stirring mode, but the baffling plates have very limited mixing effect on sewage (the main effect of the baffling plates is also to prevent short flow and guarantee reaction time), so the design of the equipment has longer retention time, and larger occupied area.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sewage dosing coagulation-flocculation device for overcoming the defects of the prior art, wherein a coagulation tank is connected with a flocculation tank through an air stripping pipe and a water return pipe, the sewage and a medicament are fully mixed by adopting air stripping stirring and hydraulic stirring modes, simultaneously, the formation of a flocculating body is not influenced, and the efficiency and the effect of a flocculation reaction can be effectively improved.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a sewage dosing coagulation-flocculation device, which comprises a coagulation tank, a flocculation tank, an air stripping pipe and a water return pipe, the two ends of the water return pipe are respectively tangent with the coagulation tank and the flocculation tank, the air stripping pipe is vertically arranged and comprises an air stripping main pipe and an air stripping air inlet pipe, the bottom of the gas stripping main pipe is connected with one end of a first water outlet pipe horizontally arranged at the bottom of the coagulation tank, the other end of the first water outlet pipe is tangentially connected with the body of the coagulation tank, the top outlet of the gas stripping main pipe is tangentially connected with the upper end of the flocculation tank, one end of the air-lifting air inlet pipe is communicated with the air-lifting main pipe, the other end of the air-lifting air inlet pipe is connected with a fan, a water inlet pipe is arranged at the top of the coagulation tank in a tangent manner, the bottom of flocculation basin is tangent to be provided with the second outlet pipe, the wet return position is higher than the position of first outlet pipe and second outlet pipe, be provided with first dosing point and second dosing point on coagulating basin and the flocculation basin respectively.

Above-mentioned sewage adds medicine and thoughtlessly congeals-flocculation equipment, the coagulating basin with the flocculation basin all sets up to cylindric, and both highly the same.

Above-mentioned sewage adds medicine and thoughtlessly congeals-flocculation equipment, the diameter in coagulating basin is less than the diameter in flocculation basin.

In the sewage dosing coagulation-flocculation equipment, the coagulation tank and the flocculation tank are both made of steel concrete pouring, carbon steel, glass fiber reinforced plastic, stainless steel, PE or PVC plastic.

The utility model has the beneficial effects that: according to the utility model, the gas stripping pipe is adopted to connect the coagulation tank and the flocculation tank, each water inlet is respectively arranged in a tangent way with the tank body of the coagulation tank and the flocculation tank, sewage and a medicament are fully mixed by using gas stripping stirring and hydraulic stirring modes, simultaneously, the formation of a flocculating body is not influenced, the efficiency and the effect of flocculation reaction can be effectively improved, the retention time of the sewage is short, and the equipment volume and the equipment manufacturing materials are saved; connect between coagulating basin and the flocculation basin and set up the wet return, and the regulation of the volume of realizing the return water through the air supply volume of air stripping pipe realizes the controllability of stirring mixing effect.

Drawings

The utility model will be further explained with reference to the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic top view.

In the figure: 1. a coagulation tank; 1-1, a water inlet pipe; 1-2, a first dosing point; 2. a flocculation tank; 2-1, a second water outlet pipe; 2-2, adding a second medicine adding point; 3. a gas stripping tube; 3-1, gas stripping main pipe; 3-2, gas stripping gas inlet pipe; 4. a water return pipe.

Detailed Description

The utility model will be further explained with reference to the drawings.

Referring to fig. 1 to 2, the sewage dosing coagulation-flocculation apparatus of the present invention comprises a coagulation tank 1, a flocculation tank 2, an air-lift pipe 3 and a water return pipe 4, wherein two ends of the water return pipe 4 are respectively connected with the tank bodies of the coagulation tank 1 and the flocculation tank 2 in a tangential manner, such that water inlet and water outlet both move along the side wall of the tank bodies in a circular manner, the air-lift pipe 3 is vertically arranged and comprises an air-lift main pipe 3-1 and an air-lift air inlet pipe 3-2, the bottom of the air-lift main pipe 3-1 is connected with one end of a first water outlet pipe horizontally arranged at the bottom of the coagulation tank 1 through an elbow, the other end of the first water outlet pipe is connected with the tank body of the coagulation tank 1 in a tangential manner, the top outlet of the air-lift main pipe 3-1 is connected with the upper end of the flocculation tank 2 through an elbow in a tangential manner, one end of the air-lift air inlet pipe 3-2 is communicated with the air-lift main pipe 3-1, the other end of the air stripping main pipe is connected with a fan, the fan presses air into the air stripping main pipe, air flow pushes sewage into a flocculation tank, the sewage entering the flocculation tank 2 makes circular motion along the tank body of the flocculation tank in the horizontal direction, the sewage flows downwards in the vertical direction, the whole sewage is in a vortex-shaped flow state, a water inlet pipe 1-1 is arranged at the top of the flocculation tank 1 in a tangent mode, the sewage enters the coagulation tank and makes circular motion along the tank body of the coagulation tank in the horizontal direction, the sewage moves downwards in the vertical direction, a second water outlet pipe 2-1 is arranged at the bottom of the flocculation tank 2 in a tangent mode, the position of a water return pipe 4 is higher than the positions of the first water outlet pipe and the second water outlet pipe, part of backflow water in the flocculation tank 2 flows back into the flocculation tank 1, the backflow water also makes circular motion in the horizontal direction, moves from bottom to top in the vertical direction, and the amount of the backflow water is introduced into the air stripping main pipe through the fan for regulation, the air stripping air inlet pipe can be provided with a valve for adjusting air inlet quantity, and the coagulation tank 1 and the flocculation tank 2 are respectively provided with a first dosing point 1-2 and a second dosing point 2-2.

Coagulation bath 1 with flocculation bath 2 all sets up to cylindric, and both highly the same, just the diameter of coagulation bath 1 is less than the diameter of flocculation bath 2 for there is the coagulation bath to get into the velocity of flow of water among the flocculation bath and diminishes, and medicament and sewage in the flocculation bath slowly mix the reaction, makes and gathers under the effect of medicament by the tiny alum blossom that the coagulation bath got into in the flocculation bath, and the bottom of the pool that grows up the grow and sink to the flocculation bath gradually, flows out by outlet pipe 2-1 along with the rivers.

The sewage treatment process comprises the following steps:

A. adding a medicine and coagulating: the sewage is tangentially injected into the coagulation tank 1 through the water inlet pipe 1-1, circularly moves in the horizontal direction, flows downwards in the vertical direction, is integrally in a vortex-shaped flow state, and is continuously added with a coagulation agent (such as PAM) at the first dosing point 1-2, the coagulation agent and the sewage are fully mixed in the coagulation tank 1, so that the formation of fine alum floc can be seen in a very short time, and the water body becomes more turbid.

B. Adding a medicine and flocculating process: the turbid water obtained in the step A is pushed to flow into a flocculation tank 2 through an air stripping pipe 3, the turbid water also enters the flocculation tank from the tangential direction and does circular motion in the horizontal direction, the turbid water flows downwards in the vertical direction, the turbid water is in a vortex-shaped flow state integrally, meanwhile, a flocculation reagent is continuously added at a second reagent adding point 2-2, the diameter of the flocculation tank is larger than that of the coagulation tank, and the flow velocity of water flow in the flocculation tank is far smaller than that of water flow in the coagulation tank, so that the reagent and sewage are slowly mixed and react in the tank, original fine alum flowers are combined under the action of the reagent and grow to be larger, a large amount of alum flowers can be gradually observed to slowly sink to the bottom of the tank, and then the turbid water flows out of the reaction equipment along with a water outlet pipe.

C. And (3) circulating reflux process: and (4) because the water quantity of the gas stripping plug flow is larger than the treated water quantity (designed water quantity), part of the sewage obtained in the step (B) returns to the coagulation tank 1 through the return pipe, and the coagulation process is continued. Meanwhile, the position of the water return pipe is higher than the height of the second water outlet pipe 2-1 of the flocculation tank, so that the return water cannot carry a large amount of alum flocs, and only a small part of small alum flocs with small density and small particle size flows back to the coagulation tank 1 along with the water flow.

Claims

1. The utility model provides a sewage adds medicine and thoughtlessly congeals-flocculation equipment which characterized in that: the equipment comprises a coagulation tank (1), a flocculation tank (2), an air lifting pipe (3) and a water return pipe (4), wherein two ends of the water return pipe (4) are respectively in tangent connection with the coagulation tank (1) and the flocculation tank (2), the air lifting pipe (3) is vertically arranged and comprises an air lifting main pipe (3-1) and an air lifting air inlet pipe (3-2), the bottom of the air lifting main pipe (3-1) is connected with one end of a first water outlet pipe horizontally arranged at the bottom of the coagulation tank (1), the other end of the first water outlet pipe is in tangent connection with the tank body of the coagulation tank (1), the top outlet of the air lifting main pipe (3-1) is in tangent connection with the upper end of the flocculation tank (2), one end of the air lifting air inlet pipe (3-2) is communicated with the air lifting main pipe (3-1), the other end of the air lifting air inlet pipe is connected with a fan, the top of the coagulation tank (1) is provided with a water inlet pipe (1-1) in tangent manner, the bottom of flocculation basin (2) is tangent to be provided with second outlet pipe (2-1), wet return (4) position is higher than the position of first outlet pipe and second outlet pipe, be provided with first dosing point (1-2) and second dosing point (2-2) on coagulating basin (1) and flocculation basin (2) respectively.

2. The sewage dosing coagulation-flocculation apparatus of claim 1, wherein: the coagulation tank (1) and the flocculation tank (2) are both arranged to be cylindrical and have the same height.

3. The sewage dosing coagulation-flocculation apparatus of claim 2, wherein: the diameter of the coagulation tank (1) is smaller than that of the flocculation tank (2).

4. The sewage dosing coagulation-flocculation apparatus of claim 3, wherein: the coagulation tank (1) and the flocculation tank (2) are both made of steel concrete pouring, carbon steel, glass fiber reinforced plastic, stainless steel, PE or PVC plastic.