CN220703469U

CN220703469U - Sewage purification device

Info

Publication number: CN220703469U
Application number: CN202322380289.1U
Authority: CN
Inventors: 吴林; 李建明; 刘巍
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-04
Filing date: 2023-09-04
Publication date: 2024-04-02
Anticipated expiration: 2033-09-04

Abstract

The utility model discloses a sewage purification device, which comprises a sand setting tank, a primary sedimentation tank, a secondary sedimentation tank, a filtering unit, a reverse osmosis unit and a disinfection unit which are sequentially arranged; an ultrasonic oscillator is arranged at the bottom of the primary sedimentation tank, and a flocculant feeder is arranged at the top of the secondary sedimentation tank; the bottoms of the primary sedimentation tank and the secondary sedimentation tank are respectively provided with a sludge discharge opening, the sludge discharge opening is provided with a sludge recovery device, and the sludge recovery device sequentially comprises a slurry filter, a slurry concentrator and a slurry dehydrator. The filtering unit adopts a multistage filtering structure, and the PP cotton layer, the aramid nanofiber membrane and the supporting layer are used as primary filtering components, so that suspended impurities and colloid in the wastewater are effectively removed, and the water is clarified; the activated carbon net and the ultrafiltration membrane finely filter water, so that the filtered water reaches the standard of domestic water, the filtering effect is extremely high, the sludge is recycled through the sludge recycling device, and the method has high popularization value.

Description

Sewage purification device

Technical Field

The utility model belongs to the field of water treatment, and particularly relates to a sewage purification device.

Background

Whether the energy consumption problem of the sewage treatment plant can be solved, and the reasonable energy distribution becomes a key factor for determining the operation benefit of the sewage treatment plant. The development of sewage treatment technology with higher energy efficiency, reasonable design and operation of sewage treatment plants are the directions of future development.

At present, the sewage treatment process generally comprises coagulation, flocculation, precipitation and other processes, wherein coagulation and flocculation are methods for purifying the wastewater by adding coagulant into the wastewater to coagulate and flocculate colloidal particle substances therein. The former is produced by adding electrolyte to reduce or eliminate the electro-potential of colloidal particles so that the colloidal particles lose stability and destabilize the colloidal particles to be mutually coalesced; the latter is produced by the adsorption bridging of the polymer substance and the agglomeration of the colloidal particles. The precipitation is a process of generating a separable solid phase from a liquid phase or separating out insoluble substances from a supersaturated solution, and is mainly applied to the aspect of sewage treatment by using the principle of solid-liquid phase separation and the principle of natural sedimentation by utilizing the self gravity influence of solid phase particles.

The prior art patent CN 108911086A discloses a high-efficient coagulating sedimentation integration equipment, including coagulating sedimentation tank, inlet tube and mud circulating pipe, coagulating sedimentation tank is including the water inlet region, sedimentation zone and the separation district of order setting according to the water flow direction, the water inlet region is located coagulating sedimentation tank upper end, the separation district is located coagulating sedimentation tank upper end, the sedimentation zone is located the below of water inlet region and separation zone, the inlet tube stretches into the water inlet region, be provided with phosphorus locking agent on the inlet tube and add branch pipe and flocculating agent/coagulant aid and add branch pipe, mud circulating pipe is drawn forth from sedimentation zone bottom, and the export is located water inlet region top for with the mud backward flow in the sedimentation zone to the water inlet region. But has the following drawbacks: the precipitated sludge can not be directly utilized, so that resource waste is caused; the sedimentation effect of the sludge and the sewage purification are poor, so that the water quality after final purification is difficult to ensure the use requirement.

Therefore, a sewage purifying device which has high precipitation efficiency, good purifying effect and can recycle the sludge needs to be developed.

Disclosure of Invention

The utility model aims to provide a sewage purification device to solve the problems that the existing sedimentation efficiency is low, the purification effect is poor, and sludge cannot be directly utilized.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the sewage purifying device comprises a sand setting tank, a primary sedimentation tank, a secondary sedimentation tank, a filtering unit, a reverse osmosis unit and a disinfection unit which are sequentially connected through pipelines; the method is characterized in that: the bottom of the primary sedimentation tank is provided with an ultrasonic oscillator, and the top of the secondary sedimentation tank is provided with a flocculant feeder; the bottom of one-level sedimentation tank, second grade sedimentation tank all set up the mud mouth, mud mouth department be provided with mud recovery unit, mud recovery unit contain thick liquid filter, thick liquid concentrator, thick liquid dehydrator in proper order.

Further, the filtering unit is arranged to be of a multi-stage filtering structure, and a primary filtering component and a fine filtering component are sequentially arranged from the water flow direction; the primary filter component comprises a PP cotton layer, an aramid nanofiber membrane and a supporting layer; the separating and filtering component comprises an active carbon net and an ultrafiltration membrane.

Further, the reverse osmosis unit is an RO reverse osmosis membrane which is arranged in a plurality of layers;

further, a plurality of ultraviolet sterilization lamp tubes are uniformly arranged at the top end of the sterilization unit.

Further, the sand setting tank, the primary sedimentation tank and the secondary sedimentation tank are all arranged to be of a structure with wide upper part and narrow lower part.

Further, the ultrasonic oscillator is a piezoelectric ultrasonic oscillator, and the ultrasonic frequency of the ultrasonic oscillator is not more than 20KHz. The ultrasonic oscillator does not generate cavitation phenomenon in the front ultrasonic vibration sedimentation chamber, so that the agglomeration of solid suspended matters can be accelerated and the sedimentation can be accelerated.

Further, the sewage purification device further comprises a pumping unit, wherein the pumping unit comprises a first water pump, a second water pump, a third water pump, a fourth water pump and a fifth water pump.

Further, a first water pump is arranged on a pipeline between the sand setting tank and the primary sedimentation tank; a second water pump is arranged on a pipeline between the first-stage sedimentation tank and the second-stage sedimentation tank; a third water pump is arranged on a pipeline between the two-stage sedimentation tanks and the filtering unit; a fourth water pump is arranged on a pipeline between the filtering unit and the reverse osmosis unit; a fifth water pump is arranged on the pipeline between the reverse osmosis unit and the disinfection unit.

Further, each pipeline is provided with a valve.

Compared with the prior art, the sewage purification device has the following technical effects:

1. most of the existing sedimentation tanks are primary sedimentation, and the sedimentation effect of sludge is poor, the sedimentation tank, the primary sedimentation tank and the secondary sedimentation tank are arranged, wherein the sedimentation tank utilizes the gravity effect to sediment suspended solid substances to the bottom; the piezoelectric ultrasonic oscillator is arranged at the bottom of the primary sedimentation tank, so that the agglomeration of solid suspended matters can be accelerated and the sedimentation can be accelerated; the secondary sedimentation tank is added with flocculating agent to gather suspended particles in sewage into larger lumps, so that the sewage precipitation after primary filtration is further accelerated.

2. The utility model provides a bottom in one-level sedimentation tank, second grade sedimentation tank all sets up the mud mouth, and mud mouth department sets up mud recovery unit, and mud recovery unit contains thick liquid filter, thick liquid concentrator, thick liquid dehydrator in proper order. The sludge after filtration, concentration, dehydration and drying can be directly used for agriculture, the utilization rate of the sludge is improved, and the resource waste is avoided.

3. The urban sewage contains suspended substances, colloid substances, dissolved substance ions and molecules, organic matters and water molecules. Particles with particle diameters above about 10-4mm, which mainly comprise sediment, floats and colloid substances: microparticles having a diameter of 10-4mm to 10-6mm are an aggregate of many molecules and ions, and fine particles having a diameter of 10-6mm or less, and it is difficult to effectively filter the above substances by a single filter unit in order to remove various harmful substances from water. The multistage filtration structure is adopted, the PP cotton layer, the aramid nanofiber membrane and the supporting layer are used as primary filtration components, and suspended impurities and colloid in the wastewater are effectively removed, so that the water is clarified; the activated carbon net and the ultrafiltration membrane finely filter water, so that the filtered water reaches the standard of domestic water, and the filtration effect is extremely high.

4. The disinfection and sterilization of the ultraviolet disinfection lamp tubes further kills harmful bacteria in water, thereby improving the quality of the water.

Drawings

FIG. 1 is a block diagram of a sewage purification apparatus according to the present utility model.

In the accompanying drawings: 10 grit chamber, 20 level sedimentation tank, 30 level sedimentation tank, 40 filtration unit, 50 reverse osmosis unit, 60 disinfection unit, 70 sludge recovery device

21 an ultrasonic oscillator; 31 flocculant feeder;

71 slurry filter, 72 slurry concentrator, 73 slurry dehydrator

41 primary filtration components; 42 fine filtering components;

411PP cotton layer, 412 aramid nanofiber membrane; 413 bearing layer

421 activated carbon net; 422 ultrafiltration membrane

61 ultraviolet sterilization lamp tube

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

Examples: referring to fig. 1, a sewage purification apparatus includes a grit chamber 10, a primary sedimentation tank 20, a secondary sedimentation tank 30, a filtering unit 40, a reverse osmosis unit 50, and a sterilizing unit 60, which are sequentially connected through a pipe; the method is characterized in that: the bottom of the primary sedimentation tank 20 is provided with an ultrasonic oscillator 21, and the top of the secondary sedimentation tank 30 is provided with a flocculant feeder 31; the bottoms of the primary sedimentation tank 20 and the secondary sedimentation tank 30 are respectively provided with a sludge discharge opening, a sludge recovery device 70 is arranged at the sludge discharge opening, and the sludge recovery device 70 sequentially comprises a slurry filter 71, a slurry concentrator 72 and a slurry dehydrator 73.

The filtering unit 40 is provided with a multi-stage filtering structure, and a primary filtering component 41 and a fine filtering component 42 are arranged in sequence from the water flow direction; the primary filter assembly 41 comprises a PP cotton layer 411, an aramid nanofiber membrane 412 and a support layer 413; the fine filter assembly 42 comprises an activated carbon mesh 421 and an ultrafiltration membrane 422. The reverse osmosis unit 50 is a 5-layer arranged RO reverse osmosis membrane;

a plurality of ultraviolet sterilizing lamps 61 are uniformly arranged at the top end of the sterilizing unit 60.

The sand setting tank, the primary sedimentation tank and the secondary sedimentation tank are all arranged in a structure with wide upper part and narrow lower part.

The ultrasonic oscillator is a piezoelectric ultrasonic oscillator, and the ultrasonic frequency of the ultrasonic oscillator is not more than 20KHz. The ultrasonic oscillator does not generate cavitation phenomenon in the front ultrasonic vibration sedimentation chamber, so that the agglomeration of solid suspended matters can be accelerated and the sedimentation can be accelerated.

The sewage purification device further comprises a pumping unit, wherein the pumping unit comprises a first water pump, a second water pump, a third water pump, a fourth water pump and a fifth water pump.

A first water pump is arranged on a pipeline between the sand setting tank and the primary sedimentation tank; a second water pump is arranged on a pipeline between the first-stage sedimentation tank and the second-stage sedimentation tank; a third water pump is arranged on a pipeline between the two-stage sedimentation tanks and the filtering unit; a fourth water pump is arranged on a pipeline between the filtering unit and the reverse osmosis unit; a fifth water pump is arranged on the pipeline between the reverse osmosis unit and the disinfection unit.

In addition, each pipeline is provided with a one-way valve, wherein the water pump and the one-way valve are conventional components, and are not shown in the figure.

Working principle: in the implementation process, the water filtered by the grid or the sand filter for urban sewage enters the sand setting tank, after entering the sand setting tank under the action of the high-pressure pump, suspended solid matters in the sand water are precipitated to the bottom due to self gravity, and the liquid on the upper layer directly flows into the primary sedimentation tank through the water pump. The bottom of the primary sedimentation tank is provided with a piezoelectric ultrasonic oscillator, the ultrasonic frequency of the piezoelectric ultrasonic oscillator is not more than 20KHz, the agglomeration of solid suspended matters can be quickened, the sedimentation is quickened, the liquid after sedimentation flows to the secondary sedimentation tank under the action of a water pump, suspended particles in sewage are aggregated into larger lumps under the auxiliary action of a flocculating agent, and the secondary sedimentation is further quickened to be carried out on the sewage after the primary sedimentation. After the precipitation, suspended matters and colloid matters of the sewage are basically precipitated, and the precipitate is discharged through a sludge discharge port. After the water flows to the filtering unit, a multi-stage filtering mode is started; the PP cotton layer, the aramid nanofiber membrane and the supporting layer are used as a primary filtering component, so that suspended impurities and colloid in the wastewater are effectively removed, and the water is clarified; the activated carbon net and the ultrafiltration membrane finely filter water, so that the filtered water reaches the standard of domestic water, and the filtration effect is extremely high. The RO reverse osmosis membrane arranged in the 5 layers can only flow to the disinfection unit in one direction after filtering, and cannot flow back, so that the disinfected water meets the requirements of domestic water, and the filtering and purifying efficiency is high.

Meanwhile, the sludge discharged from the sludge discharge port is sequentially treated by a slurry filter, a slurry concentrator and a slurry dehydrator, and the sludge after filtration, concentration, dehydration and drying can be directly used for agriculture, so that the utilization rate of the sludge is improved, the resource waste is avoided, and the sludge purification device combines the purified water and the sludge in a multiple way, thereby having high popularization value.

Example 2: in this embodiment, 8 ultraviolet sterilizing lamps 51 can be arranged according to practical requirements, and the tops of the sterilizing units are uniformly distributed to meet the ultraviolet sterilizing requirement. Meanwhile, the number of layers of the RO reverse osmosis membrane can be 8, so that the reverse osmosis effect is further improved. The rest of the technical scheme remains unchanged from example 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A sewage purification device comprises a sand basin (10), a primary sedimentation basin (20), a secondary sedimentation basin (30), a filtering unit (40), a reverse osmosis unit (50) and a disinfection unit (60) which are sequentially connected through pipelines; the method is characterized in that:

an ultrasonic oscillator (21) is arranged at the bottom of the primary sedimentation tank (20);

a flocculating agent feeder (31) is arranged at the top of the secondary sedimentation tank (30);

the bottoms of the primary sedimentation tank (20) and the secondary sedimentation tank (30) are respectively provided with a sludge discharge opening, a sludge recovery device (70) is arranged at the sludge discharge opening, and the sludge recovery device (70) sequentially comprises a slurry filter (71), a slurry concentrator (72) and a slurry dehydrator (73);

the filtering unit (40) is of a multi-stage filtering structure, and a primary filtering component (41) and a fine filtering component (42) are arranged in sequence from the water flow direction; the primary filter component (41) comprises a PP cotton layer (411), an aramid nanofiber membrane (412) and a supporting layer (413); the fine filtration component (42) comprises an active carbon net (421) and an ultrafiltration membrane (422).

2. The sewage purification apparatus according to claim 1, wherein: the reverse osmosis unit (50) is an RO reverse osmosis membrane which is arranged in a plurality of layers.

3. The sewage purification apparatus according to claim 1, wherein: a plurality of ultraviolet sterilization lamp tubes (61) are uniformly arranged at the top end of the sterilization unit (60).

4. The sewage purification apparatus according to claim 1, wherein: the sand setting tank (10), the primary sedimentation tank (20) and the secondary sedimentation tank (30) are all arranged in a structure with wide upper part and narrow lower part.

5. The sewage purification apparatus according to any one of claims 1 to 4, wherein: the ultrasonic oscillator (21) is a piezoelectric ultrasonic oscillator.

6. The sewage purification apparatus according to claim 5, wherein: the water pump further comprises a pumping unit, wherein the pumping unit comprises a first water pump, a second water pump, a third water pump, a fourth water pump and a fifth water pump.

7. The sewage purification apparatus according to claim 6, wherein: a first water pump is arranged on a pipeline between the sand setting tank and the primary sedimentation tank; a second water pump is arranged on a pipeline between the first-stage sedimentation tank and the second-stage sedimentation tank; a third water pump is arranged on a pipeline between the secondary sedimentation tank and the filtering unit; a fourth water pump is arranged on a pipeline between the filtering unit and the reverse osmosis unit; and a fifth water pump is arranged on a pipeline between the reverse osmosis unit and the disinfection unit.

8. The sewage purification apparatus according to claim 7, wherein: valves are arranged on the pipelines.