CN210480920U

CN210480920U - Air floatation system with sludge backflow function

Info

Publication number: CN210480920U
Application number: CN201920994972.5U
Authority: CN
Inventors: 陆天怡; 聂建林
Original assignee: Safbon Water Service Holding Inc Shanghai
Current assignee: Safbon Water Service Holding Inc Shanghai
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-05-08
Anticipated expiration: 2029-06-28

Abstract

The utility model discloses a take air supporting system of mud backward flow, the system is including coagulating basin, coagulating basin's delivery port passes through the pipeline and is connected with the water inlet of flocculation basin, the delivery port of flocculation basin passes through the pipeline and is connected with the water inlet of air supporting pond, the delivery port of air supporting pond passes through the pipeline and is connected with the water inlet of mud reservoir, the delivery port of mud reservoir passes through the pipeline and is connected with the return water mouth of flocculation basin, be equipped with the sludge pump on the pipeline between mud reservoir supernatant delivery port and the flocculation basin return water mouth, be equipped with the agitator in the coagulation basin, the coagulant is thrown and add the feeder bowl and be connected with throwing of coagulation basin through throwing the feeder bowl, the flocculating agent is thrown and is thrown feeder bowl and add the feeder bowl through throwing the feeder bowl and be connected, mud reservoir department is equipped with supernatant liquid level, supernatant play water is seted up in this supernatant liquid. The technical effects are as follows: (1) the process is simple and the effect is good; (2) the operation is reliable, and the maintenance is convenient; (3) improving the efficiency and reducing the dosage.

Description

Air floatation system with sludge backflow function

Technical Field

The utility model belongs to the technical field of sewage treatment's technique and specifically relates to a take air supporting system of mud backward flow does not relate to its mechanical connection structure.

Background

The air flotation is generally used for separating oil or light suspended matters in water, and the working principle of the air flotation is that a large amount of fine bubbles are generated in the water and are adhered to suspended particles in wastewater to form a 'bubble particle' complex body with the integral density smaller than that of the water, the suspended particles float to the water surface along with the bubbles to form foam scum, and the scum is scraped out of the air flotation equipment by a scum scraper, so that the suspended matters in the water are separated. Although the air floatation process has the advantages of small occupied area, convenient operation, high efficiency and the like, the air floatation process has high operation cost and high maintenance cost, so the cost problem needs to be considered when in application.

In order to meet the requirement of water quality of effluent of a water plant, the water plant generally adopts the procedures of adding advanced treatment and the like after the conventional air floatation process, adding more chemical agents, leading the water treatment process to be very complicated and correspondingly increasing the water production cost. So the limitation needs to be broken through, and the existing process is slightly modified to save the cost. In order to solve the problem, the performance of the treatment process can be better improved by combining the air floatation process and the sludge backflow, the efficiency is improved, and the cost is greatly reduced.

Disclosure of Invention

An object of the utility model is to provide a take air supporting system of mud backward flow, the purpose combines together air supporting technology and mud backward flow to improve treatment process's performance, reinforce the flocculation effect, guarantee treatment effeciency reduces and adds the dose, finally practices thrift the cost.

In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a take sludge reflux's air supporting system, the system is including coagulating basin, coagulating basin's delivery port passes through the pipeline and is connected with the water inlet of flocculation basin, the delivery port of flocculation basin passes through the pipeline and is connected with the water inlet of air supporting pond, the delivery port of air supporting pond passes through the pipeline and is connected with the water inlet of sludge storage pool, the delivery port of sludge storage pool passes through the pipeline and is connected with the return water mouth of flocculation basin, be equipped with the sludge pump on the pipeline between sludge storage pool supernatant delivery port and the flocculation basin return water mouth, be equipped with the agitator in the coagulation basin, the coagulant is thrown and add the device and be connected with throwing of coagulation basin through throwing the pipeline, the flocculating agent is thrown and add the mouth and be connected with throwing of flocculation basin through throwing the pipeline, sludge storage pool department is equipped with supernatant and arranges the liquid level.

The utility model discloses a take air supporting system of mud backward flow is applicable to the application in the aspect of feedwater, industrial waste water and municipal sewage treatment etc, owing to combine together with this process flow of mud backward flow, can make and keep certain microbial biomass in the flocculation tank, flocculation is effectual, has ensured treatment effeciency, and the material that has not handled in the mud gets back to the pond with the dose that has not reacted, is handled once more and utilizes, provides nutrition for the microorganism, has reduced the medicine volume simultaneously, practices thrift the cost. The technical effects are as follows: (1) the process is simple and the effect is good; (2) the operation is reliable, and the maintenance is convenient; (3) improving the efficiency and reducing the dosage.

Drawings

Fig. 1 is a schematic diagram of the system architecture of the present invention.

Fig. 2 is a schematic diagram of the U-shaped plate structure of the present invention.

Fig. 3 is a side view of the U-shaped plate of the present invention.

Fig. 4 is a front view of the U-shaped plate of the present invention.

Fig. 5 is a partial enlarged view of the U-shaped plate of the present invention.

Fig. 6 is a schematic diagram of the structure of the perforated plate of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a take air supporting system of mud backward flow, it is different from prior art and lies in: the system comprises a coagulation tank 1, a water outlet of the coagulation tank 1 is connected with a water inlet of a flocculation tank 2 through a pipeline, a water outlet of the flocculation tank 2 is connected with a water inlet of an air flotation tank 3 through a pipeline, a water outlet of the air flotation tank 3 is connected with a water inlet of a sludge storage tank 4 through a pipeline, a water outlet of the sludge storage tank 4 is connected with a water return port of the flocculation tank 2 through a pipeline, a sludge pump 5 is arranged on a pipeline between a supernatant water outlet of the sludge storage tank 4 and the water return port of the flocculation tank 2, a stirrer 6 is arranged in the coagulation tank 1, a coagulant adding device 7 is connected with an adding port of the coagulation tank 1 through an adding pipeline, a flocculant adding device 8 is connected with the adding port of the flocculation tank 2 through an adding pipeline, a supernatant discharging level 9 is arranged at the sludge storage tank 4, a supernatant discharging level 9 is arranged at the supernatant discharging level, and a residue.

In specific implementation, a plurality of U-shaped plates 11 are distributed in parallel in the air flotation tank 3, each U-shaped plate 11 is composed of a front plate 12 and a rear plate 13, the lower edges of the front plate 12 and the rear plate 13 are connected through a connecting part 14 to form an integral structure, the front plate 12 and the rear plate 13 are distributed in parallel, the upper edge of the front plate 12 is lower than the upper edge of the rear plate 13, a cavity is formed between the front plate 12 and the rear plate 13, a perforated plate 15 is arranged near the lower part of the cavity, perforations 10 are distributed on the surface of the perforated plate 15, a drainage cavity 16 is formed between the perforated plate 15 and the connecting part 14, two sides of each U-shaped plate 11 are respectively and fixedly connected with the inner walls of two sides of the air flotation tank 3, a flow channel cavity 17 is formed between two adjacent U-shaped plates 11, a water inlet pipe 18 is arranged in the air flotation tank 3, one end of the water inlet pipe 18 is connected, seted up a plurality of trompils 19 on the pipe wall of inlet tube 18, seted up a plurality of apopores 20 on the pool wall of air supporting pond 3, every apopore 20 corresponds one and drains water cavity 16, apopore 20 and the side intercommunication in water cavity 16, and the delivery port that above-mentioned air supporting pond 3 was assembled to apopore 20 rethread pipeline, inlet tube 18 is located the below of U template 11, U template 11 is vertical or slant distribution in air supporting pond 3.

The air floatation system described in the present case can be realized by the following process flow: raw water firstly enters a coagulation tank, is fully mixed with an added coagulant under the action of a stirrer to adsorb pollutants, then the mixed liquid enters a flocculation tank, particles with flocculation performance are aggregated in mutual contact to form a larger flocculating body, the larger flocculating body is subjected to deslagging by an air floatation device and then enters a sludge storage tank, and supernatant liquid of the flocculating body is conveyed by a sludge pump to flow back to the flocculation tank for subsequent treatment.

In the utility model, the purpose of the coagulation tank is to make the suspended colloidal substance in water destroy (destabilize) and adsorb with the polymer phase after the coagulant is water medium under the action of the coagulant, so that the particles have flocculation performance; the stirrer is adopted for mixing raw water and a coagulant, and the raw water and the coagulant are fully reacted to be beneficial to subsequent further treatment; the flocculation reaction is mainly carried out in the flocculation tank, and colloids generated by coagulation are aggregated in mutual contact to form larger alum flocs which are easier to settle; micro-bubbles and flocculants in the air floatation equipment are adhered together and float on the water surface together to form floating slag, and then the floating slag is discharged through a slag scraper; the sludge storage tank has the functions of removing a large amount of water in the sludge, reducing the water content of the sludge and reducing the volume of the sludge so as to be beneficial to subsequent treatment; the sludge pump is used for conveying the supernatant of the sludge storage tank to the flocculation tank, so that certain microbial concentration is kept in the tank, the adsorption capacity is enhanced, the treatment efficiency is improved, and the dosage is reduced.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described above. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a take air supporting system of mud backward flow which characterized in that: the system comprises a coagulation tank (1), a water outlet of the coagulation tank (1) is connected with a water inlet of a flocculation tank (2) through a pipeline, a water outlet of the flocculation tank (2) is connected with a water inlet of an air flotation tank (3) through a pipeline, a water outlet of the air flotation tank (3) is connected with a water inlet of a sludge storage tank (4) through a pipeline, a water outlet of the sludge storage tank (4) is connected with a water return port of the flocculation tank (2) through a pipeline, a sludge pump (5) is arranged on a pipeline between a supernatant water outlet of the sludge storage tank (4) and the water return port of the flocculation tank (2), a stirrer (6) is arranged in the coagulation tank (1), a coagulant adding device (7) is connected with an adding port of the coagulation tank (1) through an adding pipeline, a flocculant adding device (8) is connected with an adding port of the flocculation tank (2) through an adding pipeline, a supernatant liquid discharge level (9), the supernatant outlet water is arranged at the supernatant discharge level (9), and the upper part of the air floatation tank (3) is provided with a slag scraper.