CN216687775U

CN216687775U - Sewage treatment device

Info

Publication number: CN216687775U
Application number: CN202123359101.2U
Authority: CN
Inventors: 刘海庆; 赵东学; 李晓航; 张志武; 王子豪; 钱国峰; 张洪京; 宋文进
Original assignee: Weihai Friend New Material Technology Co ltd
Current assignee: Weihai Friend New Material Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-07
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to a sewage treatment device, which solves the technical problems of long sewage treatment period, large land occupation space and high operation energy consumption cost of the existing device, and is provided with a solid-liquid separation device and a blending reactor, wherein the blending reactor is provided with an ejector and a high-efficiency gas-liquid blending device, the high-efficiency gas-liquid blending device is provided with an outer cavity, an inner cavity and a conical cavity, and the conical cavity is formed by connecting the bottom surfaces of two conical shells and comprises an upper conical cavity body and a lower conical cavity body; the side surface of the bottom of the upper body of the conical cavity is provided with a conical cavity water outlet, and the top of the upper body of the conical cavity is provided with a conical cavity water inlet; the inner cavity is formed by sleeving an inner cavity shell on an upper conical cavity, and the conical cavity is communicated with the inner cavity through a water outlet of the conical cavity on the side surface of the bottom of the upper conical cavity; the outer cavity is formed by sleeving an outer cavity shell outside the inner cavity and the conical cavity, and the outer cavity is communicated with the inner cavity through a pipeline. The utility model can be used in the field of sewage treatment.

Description

Sewage treatment device

Technical Field

The utility model relates to environment-friendly equipment, in particular to a sewage treatment device.

Background

In the existing sewage treatment system, the conventional treatment mode is common, and the sewage is pretreated by adopting an A2O traditional process system, and the equipment mainly comprises a coarse grid, a fine grid, an aeration grit chamber, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank and a tertiary sedimentation tank.

For example, chinese utility model patent with publication number CN 213506455U discloses a sewage treatment process system, including filter equipment, first treatment tank, second treatment tank, mud storage pool etc., common grid equipment is adopted to filter equipment, and what first treatment tank and second treatment tank adopted respectively is conventional biochemical efflux aeration and sedimentation tank process system, and the sewage treatment cycle of this type of conventional process system is longer, and occupation land space is bigger, and operation energy consumption cost is higher.

Disclosure of Invention

The utility model aims to solve the technical problems of long sewage treatment period, large land occupation space and high operation energy consumption cost of the conventional device, and provides the sewage treatment device which is short in sewage treatment period, small in land occupation space and low in operation energy consumption cost.

Therefore, the utility model provides a sewage treatment device which is provided with a solid-liquid separation device and a blending reactor, wherein the blending reactor is provided with an ejector and a high-efficiency gas-liquid blending device, and the high-efficiency gas-liquid blending device is provided with an outer cavity, an inner cavity and a conical cavity; the conical cavity is formed by connecting the bottom surfaces of two conical shells and comprises a conical cavity upper body and a conical cavity lower body; the side surface of the bottom of the upper conical cavity body is provided with a conical cavity water outlet, and the top of the upper conical cavity body is provided with a conical cavity water inlet; the inner cavity is formed by sleeving an inner cavity shell on the conical cavity, and the conical cavity is communicated with the inner cavity through a conical cavity water outlet hole on the side surface of the bottom of the conical cavity upper body; the outer cavity is formed by sleeving an outer cavity shell outside the inner cavity and the conical cavity, and the outer cavity is communicated with the inner cavity through a pipeline.

Preferably, the top of the outer cavity is provided with an exhaust port, and an exhaust valve is arranged on the exhaust port.

Preferably, an ultrasonic transducer is arranged at the bottom of a conical cavity of the high-efficiency gas-liquid blending device.

Preferably, the solid-liquid separation device is provided with a coarse grating, and the coarse grating is used for carrying out coarse filtration treatment on the sewage.

Preferably, the solid-liquid separation device is provided with a solid-liquid second separator which is used for filtering and removing solid slag and sand suspended matters in the sewage.

Preferably, the solid-liquid separation device is provided with a sedimentation tank, and the sedimentation tank collects and discharges sludge precipitated in the sewage.

Preferably, the solid-liquid second separator is provided with a frame part, a transmission part, a water distribution box part, a tensioning part, a deviation rectifying part, a back washing part, a wallboard part, a slag scraping part and a control device.

Preferably, a mud scraper is arranged at the bottom of the sedimentation tank and used for collecting and discharging the precipitated sludge; and a slag scraper is arranged at the top of the sedimentation tank body and used for removing and discharging scum.

The utility model has the following beneficial effects:

(1) the utility model adopts the solid-liquid second separator to efficiently filter and remove the sludge, sand and suspended matters in the sewage at one time, thereby reducing the load and energy consumption of a subsequent process treatment system; has the following advantages: the energy consumption is low, and the fine grid, the grit chamber and the primary settling chamber can be replaced; the operation energy consumption is low, and the power consumption per ton of water is 0.01-0.03 kw/h; the efficiency is high, the method is rapid and efficient, and the separation of sludge, sand and the like can be realized within 5 s; the effect is good, and the high polymer material filter belt is adopted, so that scaling and corrosion are not easy to occur; the filtering precision of the filter screen is high and can reach 50 microns at most; the service life is long, the main body of the equipment is made of stainless steel, key parts are made of novel high polymer materials, corrosion and oxidation are prevented, and the service life is as long as more than 20 years; the removal rate of hair and fiber in the original sewage reaches more than 99 percent, the removal rate of mud, slag and sand reaches more than 95 percent, the removal rate of suspended particulate matters is 30-60 percent, and organic substances (difficult to degrade) are removed by 20-65 percent.

(2) The utility model adopts the blending reactor, adopts the multi-stage high-efficiency fusion oxidation of the sewage and the ozone, and then carries out the ultrasonic radiation cavitation cracking, and the sewage treatment process system does not need to add any chemical agent, thereby greatly reducing the sludge output and shortening the sewage treatment operation period; the sewage treatment method of multi-stage ozone fusion and ultrasonic waves has the COD removal rate of 70-90 percent; the weight ratio of the ozone to the total COD of the water body to be treated is 1.5-3: 1 (in the combination of the second-stage or third-stage blending reactor, the proportion of the two is gradually reduced), and the ozone concentration is 5-10%; the ultrasonic frequency is 200 KHz-1 MHz, and multi-frequency orthogonal ultrasonic radiation is adopted.

(3) Compared with the traditional A, the sewage treatment process system of the utility model₂The O, AO, MBR and other process systems simplify the composition of the sewage treatment system, reduce the land space, save the land cost and reduce the operation cost of the whole sewage treatment system. The ratio of the floor area of the traditional process to the floor area of the process of the utility model is about 50-100 times.

(4) The utility model adopts the mechanism of ozone dissolution and oxidation, combines the technical characteristics of power ultrasound, and combines the two to strengthen each other, thereby not only reducing the ozone adding amount by more than 50 percent, but also improving the degradation and oxidation of inorganic organic matters in the sewage, and the mechanism is as follows: when the sewage is irradiated by ultrasonic wave, ozone and bubbles dissolved in the sewage are jetted. Under the alternating action of high-frequency negative pressure and positive pressure of power ultrasound, rapid expansion and compression occur, severe collapse and explosion occur, ozone bubbles are further crushed into micro bubbles with the diameter of 0.2-0.3 micrometer, the gas-liquid contact area is also increased by thousands of times, and meanwhile, cavitation effect cracking of the ultrasound generates strong oxidation substances such as hydroxyl radicals and the like, so that the effect of further decomposition and oxidation on sewage is enhanced.

(5) According to the utility model, by regulating the pH value to be 7-9, the decomposition speed of ozone in sewage is increased by 2-3 times when the pH value is increased, and more hydroxyl radicals required by oxidation are generated.

The present invention is described in further detail below with reference to the attached drawings.

Drawings

FIG. 1 is a process flow diagram using the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view showing the construction of a solid-liquid second separator according to the present invention;

FIG. 4 is a schematic diagram of the configuration of the blending reactor of the present invention.

The attached numbers in the figures illustrate:

1. raw sewage; 2. coarse grating; 3. a solid-liquid second separator; 3-1, a frame member; 3-2, a water distribution box component; 3-3, a tensioning member; 3-4, a deviation rectifying component; 3-5, a transmission component; 3-6, a slag discharging component; 3-7 wallboard parts; 3-8, a back washing component; 4. a high-efficiency sedimentation tank; 4-1, a slag scraper; 4-2, a mud scraper; 4-3, a sludge settling tank; 4-4, a slag discharge groove; 5. a blending reactor; 12. a conical cavity; 13. an inner cavity; 14. an outer cavity; 5-4, an ultrasonic transducer; 5-5, an ejector; 6. discharging water at the terminal; 7. carrying out solid slag outward; 8. regulating and controlling the pH value; 9. transporting the sludge outside; 12. a conical cavity; 13. an inner cavity; 14. an outer cavity; 22. an outer cavity water outlet; 23. an exhaust port; 24. a water outlet of the conical cavity; 25. a water inlet of the conical cavity; 26. a water outlet of the inner cavity; 27. an outer cavity water inlet.

Detailed Description

The present invention will be further described with reference to the following examples.

As shown in attached figures 1-3, the utility model provides a sewage treatment device, which is provided with a coarse grating 2, a solid-liquid second separator 3, a high-efficiency sedimentation tank 4 and a blending reactor 5. The raw sewage 1 is firstly subjected to rough filtration treatment by a rough grating 2, and then enters a solid-liquid second separator 3 through a lifting pump to efficiently separate and remove solid slag and sand suspended matters in the sewage; then the sludge enters a high-efficiency sedimentation tank 4, is collected by a mud scraper 4-2 to be discharged to a mud sedimentation tank 4-3 after sedimentation of the sludge at the bottom of the tank and is collected by a slag scraper 4-1 to be discharged to a slag discharge tank 4-4 after floating of scum at the top of the tank, and then the PH value is regulated and controlled; and then enters a blending reactor 5 to carry out multi-stage ozone blending and oxidation treatment and synchronous ultrasonic cavitation cracking treatment, and finally the PH value is adjusted, and the terminal water is discharged after reaching the standard.

As shown in attached figures 1-3, the preferred embodiment of the utility model is that a solid-liquid second separator 3 is an automatic control device which is composed of a frame part 3-1, a transmission part 3-5, a water distribution box part 3-2, a tension part 3-3, a deviation rectifying part 3-4, a back washing part 3-8, a wallboard part 3-7, a slag scraping part 3-6, a PLC control system and other large parts, and is used for efficiently filtering and removing solid slag and sand suspended matters larger than 0.2mm in sewage at one time based on a circulating filter belt;

as shown in attached figures 1-2, the sewage enters a high-efficiency sedimentation tank 4, a nonmetal chain mud scraper 4-2 is arranged at the bottom of the high-efficiency sedimentation tank 4, and the precipitated sludge is collected and discharged; and a slag scraper 4-1 of a non-metal chain is arranged at the top of the tank body, and scum on the surface of the tank is removed and discharged outside.

As shown in the attached drawings 1-2, the preferred embodiment of the utility model is that the sewage with the pH value of 8 regulated enters the blending reactor 5, the regulation mode adopts composite alkali or hydrogen peroxide, and the pH value of the sewage is regulated to 7-9.

As shown in the attached drawings 1-2, the sewage enters the system of the blending reactor 5, namely the sewage in the blending reactor is injected by a pressure water pump through an ejector 5-5 to absorb ozone under negative pressure and is mixed and oxidized at a high speed, the mixed gas and liquid enters a conical cavity 12 in an inner cavity 13 of a high-efficiency gas-liquid blending device for further sufficient mixing and oxidation, meanwhile, ultrasonic waves 5-4 arranged at the bottom of the conical cavity 12 carry out cavitation and cracking on the mixed liquid of the sewage and the ozone, the mixed liquid enters an outer cavity 14 for gas-liquid mixing under the back pressure of the inner cavity 13, and finally the mixed liquid is discharged out of the blending reactor 5.

As shown in fig. 4, the blending reactor of the present invention (which is a simplified schematic diagram in fig. 2, only illustrating the case of one conical cavity) is provided with a conical cavity 12, an inner cavity 13 and an outer cavity 14; the conical cavity 12 is formed by connecting the bottom surfaces of two conical shells and comprises an upper conical cavity body and a lower conical cavity body; the side surface of the bottom of the upper body of the conical cavity is provided with a conical cavity water outlet 24, and the top is provided with a conical cavity water inlet 25; the inner cavity 13 is formed by sleeving an inner cavity shell on an upper conical cavity, and the conical cavity 12 is communicated with the inner cavity 13 through a conical cavity water outlet 24 on the side surface of the bottom of the upper conical cavity; the outer cavity 14 is formed by sleeving an outer cavity shell outside the inner cavity 13 and the conical cavity 12, and the outer cavity 14 is communicated with the inner cavity 13 through a pipeline; the top of the outer cavity 14 is provided with an exhaust port 23, and the exhaust port 23 is provided with an exhaust valve.

The working principle and the working process of the utility model are as follows: when the device is operated, raw sewage 1 is firstly subjected to rough filtration treatment by a rough grating 2 and then enters a solid-liquid second separator 3 by a lifting pump to efficiently separate and remove solid slag and sand suspended matters in the sewage; then the sludge enters a high-efficiency sedimentation tank 4, is collected by a mud scraper 4-2 to be discharged to a mud sedimentation tank 4-3 after sedimentation of the sludge at the bottom of the tank and is collected by a slag scraper 4-1 to be discharged to a slag discharge tank 4-4 after floating of scum at the top of the tank, and then the PH value is regulated and controlled; then the sewage enters a blending reactor 5, the sewage is injected by a pressure water pump through a jet device 5-5 to absorb ozone under negative pressure and is mixed and oxidized at high speed, the mixed gas and liquid enters a conical cavity 12 in an inner cavity 13 of the high-efficiency gas-liquid blending device for further sufficient mixing and oxidation, an ultrasonic transducer 5-4 arranged at the bottom of the conical cavity 12 carries out cavitation and cracking treatment on the mixed liquid of the sewage and the ozone, the mixed liquid enters an outer cavity 14 for gas-liquid mixing under the back pressure of the inner cavity 13, multi-stage ozone blending and oxidation treatment and synchronous ultrasonic cavitation and cracking treatment are carried out, finally the pH value is adjusted, and the terminal water is discharged after reaching the standard.

However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims

1. A sewage treatment device is provided with a solid-liquid separation device and is characterized by also being provided with a blending reactor, wherein the blending reactor is provided with an ejector and a high-efficiency gas-liquid blending device, and the high-efficiency gas-liquid blending device is provided with an outer cavity, an inner cavity and a conical cavity; the conical cavity is formed by connecting the bottom surfaces of two conical shells and comprises a conical cavity upper body and a conical cavity lower body; the side surface of the bottom of the upper conical cavity body is provided with a conical cavity water outlet, and the top of the upper conical cavity body is provided with a conical cavity water inlet; the inner cavity is formed by sleeving an inner cavity shell on the conical cavity, and the conical cavity is communicated with the inner cavity through a conical cavity water outlet hole on the side surface of the bottom of the conical cavity upper body; the outer cavity is formed by sleeving an outer cavity shell outside the inner cavity and the conical cavity, and the outer cavity is communicated with the inner cavity through a pipeline.

2. The wastewater treatment device according to claim 1, wherein an exhaust port is arranged at the top of the outer cavity, and an exhaust valve is arranged on the exhaust port.

3. The sewage treatment device of claim 1, wherein an ultrasonic transducer is arranged at the bottom of the conical cavity of the high-efficiency gas-liquid mixing device.

4. The wastewater treatment apparatus according to claim 1, wherein the solid-liquid separation apparatus is provided with a coarse screen for coarse filtration treatment of wastewater.

5. The sewage treatment device according to claim 1 or 4, wherein the solid-liquid separation device is provided with a solid-liquid second separator for filtering and removing solid slag and sand suspended matters in the sewage.

6. The sewage treatment device according to claim 5, wherein the solid-liquid separation device is provided with a sedimentation tank, and the sedimentation tank collects and discharges sludge precipitated in the sewage.

7. The sewage treatment device according to claim 5, wherein the solid-liquid second separator is provided with a frame member, a transmission member, a water distribution box member, a tension member, a deviation rectifying member, a back washing member, a wall plate member, a slag scraping member and a control device.

8. The sewage treatment device according to claim 6, wherein a mud scraper is arranged at the bottom of the sedimentation tank and used for collecting and discharging the settled sludge; and a slag scraper is arranged at the top of the sedimentation tank body and used for removing and discharging scum.