CN219231705U

CN219231705U - Sewage gravity fine filter

Info

Publication number: CN219231705U
Application number: CN202320866815.2U
Authority: CN
Inventors: 张良; 司亚彬
Original assignee: Shanxi Zhiren Shuangyuan Environmental Technology Co ltd
Current assignee: Shanxi Zhiren Shuangyuan Environmental Technology Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-06-23
Anticipated expiration: 2033-04-18

Abstract

The utility model discloses a sewage gravity fine filter, which belongs to the technical field of water treatment, and comprises the following specific technical scheme: the water collecting device comprises a filtering main body, wherein a water collecting bucket is arranged at the bottom of the filtering main body, a backwash water inlet pipe and a water outlet pipe are communicated on the water collecting bucket, a water inlet water distribution groove is formed in the top of the filtering main body, an upper water inlet pipe and a backwash water outlet pipe are communicated on the water inlet water distribution groove, the filtering main body and the water collecting bucket are divided through a supporting plate, a plurality of water filtering caps are arranged on the supporting plate, coarse-grain quartz sand layers, medium-grain quartz sand layers and fine-grain quartz sand layers are sequentially arranged at the top of the supporting plate from bottom to top, water in a sedimentation tank sequentially passes through the fine-grain quartz sand layers, the medium-grain quartz sand layers, the coarse-grain quartz sand layers, the water filtering caps and the supporting plate and then enters the water collecting bucket, after filtration, regeneration backwash is realized after filtration and sewage blocking, the water head height is lifted once, and the water head is utilized for many times, and the device can be widely popularized and applied in the sewage treatment fields such as coal mines and domestic sewage.

Description

Sewage gravity fine filter

Technical Field

The utility model belongs to the technical field of water treatment, and particularly relates to a fine filter for filtering water by utilizing gravity.

Background

Sewage generally refers to waste water from production and life, which is polluted to a certain extent, and mainly includes domestic sewage, industrial wastewater and initial rainwater, and main pollutants of sewage include pathogen pollutants, aerobic pollutants, plant nutrients, toxic pollutants, impurities and the like.

Industrial wastewater is wastewater generated in industrial and mining production activities, and can be divided into production wastewater and production wastewater. Production sewage is formed in the production process and is polluted by raw materials such as production raw materials/semi-finished products or finished products, and also comprises thermal pollution (water with water temperature exceeding 60 ℃ generated in the production process); the production wastewater is water which is formed in the production process, but is not directly involved in the production process, is not polluted by raw materials such as production raw materials/semi-finished products or finished products, or has little temperature rise. The production sewage needs to be purified, the production sewage does not need to be purified or only needs to be simply treated, such as cooling treatment, and the mixed sewage of the domestic sewage and the production sewage is called urban sewage.

The gravity type sewage treatment filter mainly treats sewage to realize recycling of water resources, the gravity type sewage treatment filter realizes filtering and screening by utilizing the gravity of water to purify the water, the water purification quality mainly depends on a filtering mode, the existing gravity type sewage treatment filter always needs to introduce external pressurized water, the energy consumption of the whole equipment is high, the investment is large, the construction period is long, the occupied space is large, and in the actual use process, the existing gravity type filtering equipment is difficult to meet the requirement of fine filtration; in addition, when the filter layer of the sewage blockage is treated, the backwashing effect is poor, the backwashing time is long, the filtering performance of the filter is difficult to recover completely, and the working progress of the whole sewage treatment is influenced.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides the sewage gravity fine filter, which performs gravity filtration by utilizing the water head of the original sedimentation tank, does not need external pressurized water, realizes low-power consumption sewage filtration, has high filtration precision, and can be reused for a plurality of times.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a sewage gravity fine filter, includes the filtration main part of barrel-type, and the filtration main part is supported through many landing legs, and the bottom of filtration main part is equipped with the sink, and the top of filtration main part is equipped with the water inlet cloth groove.

The filtering main body and the water collecting bucket are divided by the lining support plate, a plurality of water filtering caps are arranged on the lining support plate, a coarse quartz sand layer, a medium quartz sand layer and a fine quartz sand layer are sequentially arranged at the top of the lining support plate from bottom to top, and a buffer area is formed between the fine quartz sand layer and the top of the filtering main body. The water of sedimentation tank gets into in filtering the buffer of main part, and rivers flow through fine quartz sand layer, well grain quartz sand layer, coarse grain quartz sand layer, water filtering cap back entering sink after the water, and quartz sand layer and the water filtering cap at each level can get rid of the impurity in the water, realizes the filtration of water. The filter cap can ensure that the filter material can not leak into the water collecting hopper during back flushing, and the clarity of the filtered water quality is ensured.

The water collecting bucket is communicated with a backwash water inlet pipe and a lower water outlet pipe, the backwash water inlet pipe and the lower water outlet pipe are symmetrically arranged about the central axis of the water collecting bucket, the backwash water inlet pipe and the lower water outlet pipe are both arranged at the bottom of the water collecting bucket, and filtered clear water is discharged through the lower water outlet pipe.

The water inlet and distribution tank is communicated with an upper water inlet pipe and a backwash water outlet pipe, the upper water inlet pipe and the backwash water outlet pipe are symmetrically arranged about the central axis of the filter body, water in the sedimentation tank is sent into the filter through the upper water inlet pipe, and backwash water is discharged through the backwash water outlet pipe.

The top of water inlet water distribution groove is equipped with from the cat ladder, is equipped with pavement slab and railing from the cat ladder, and the staff can move in the platform and observe, overhaul, and when many filters were operated, pavement slab and railing on can be linked together each filter, and observation and overhaul in the time of being convenient for many equipment.

Be equipped with the maintenance manhole on the filter main part, when the filter is inside to need overhauling, the staff overhauls through the manhole.

In order to achieve good filtering effect, a plurality of water filtering caps are arranged on the lining support plate at equal intervals.

The thickness of the fine quartz sand layer is preferably larger than that of the medium quartz sand layer, and the thickness of the medium quartz sand layer is the same as that of the coarse quartz sand layer, so that impurities in water can be removed, the filtering resistance is small, the specific surface area is small, the acid and alkali resistance is strong, and the pollution resistance is good.

Compared with the prior art, the utility model has the following specific beneficial effects: according to the utility model, only the water head of the original sedimentation tank is utilized, so that gravity filtration can be realized, incoming water is not required to be pressurized, and energy sources are saved; and after the sewage is filtered and blocked, realizing regeneration back flushing, and when in back flushing, filtering water is pressurized by a pump and then enters a filter through a pipeline to carry out back flushing, so that the filtering performance is recovered, and the next filtering cycle is carried out. The filter optimizes the whole filtering structure, once lifts the water head height, repeatedly utilizes the water head, has low energy consumption, simple and convenient operation, small occupied space and convenient site construction, can meet the requirements of mine sewage discharge and the concentration of the reused suspended matters, and can be widely popularized and applied in the sewage treatment fields such as coal mines, domestic sewage and the like.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the present utility model in a top view.

Fig. 3 is a partial enlarged view at a in fig. 1.

In the figure, 1 is a filtering main body, 2 is a supporting leg, 3 is a water collecting bucket, 4 is a water inlet and water distribution groove, 5 is a supporting plate, 6 is a water filtering cap, 7 is a coarse-grain quartz sand layer, 8 is a medium-grain quartz sand layer, 9 is a fine quartz sand layer, 10 is a buffer zone, 11 is a backwashing water inlet pipe, 12 is a lower water outlet pipe, 13 is an upper water inlet pipe, 14 is a backwashing water outlet pipe, 15 is a self-climbing ladder, and 16 is an inspection manhole.

Description of the embodiments

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1-3, a sewage gravity fine filter comprises a cylindrical filter body 1, wherein the filter body 1 is supported by a plurality of supporting legs 2, a water collecting bucket 3 is arranged at the bottom of the filter body 1, and a water inlet and distribution tank 4 is arranged at the top of the filter body 1. The water inlet and distribution tank 4 is made of stainless steel or carbon steel and has high strength and corrosion resistance, the tank width is 300-400mm, the depth is 500mm, the length is the same as the diameter or the length of the tank body, the water inlet pipe penetrates through the filtering tank from the outside to be communicated with the water distribution tank, the space between the bottoms of the water distribution tank is 500mm, sand leakage holes with the diameter of 50mm are formed, the water outlet of the water distribution tank adopts a triangular weir, and the distance between the bottoms of the water distribution tank and a sand layer is more than 1000mm.

The filtering main body 1 and the catchment hopper 3 are divided by a lining support plate 5, the lining support plate 5 adopts a carbon steel high-strength corrosion-resistant or stainless steel flower plate, a plurality of ABS water filtering caps 6 are arranged on the lining support plate 5, and the filtering flow is 1.0t/h and the gap is 0.1mm. The top of the lining support plate 5 is sequentially provided with a coarse-grain quartz sand layer 7, a medium-grain quartz sand layer 8 and a fine quartz sand layer 9 from bottom to top, the effective filter layer filling height of the fine quartz sand layer 9 is greater than 800mm, the medium-sand cushion layer is greater than 200mm, the coarse-sand cushion layer is greater than 200mm, and a buffer zone 10 is formed between the fine quartz sand layer 9 and the top of the filter main body 1. The water in the sedimentation tank enters the buffer zone 10 of the filtering main body 1, and the water flows through the fine quartz sand layer 9, the medium quartz sand layer 8, the coarse quartz sand layer 7 and the water filtering cap 6 in sequence and then enters the water collecting bucket 3, and impurities in water can be removed through the quartz sand layers and the water filtering cap 6 at each level, so that the water is filtered. The filtering cap 6 can ensure that the filtering material can not leak into the water collecting hopper 3 during back flushing, and ensure the clarity of the filtered water quality.

The water collecting bucket 3 is communicated with a backwash water inlet pipe 11 and a lower water outlet pipe 12, the flow speed of the lower water outlet pipe 12 is not more than 1.5m/s, the backwash water inlet pipe 11 and the lower water outlet pipe 12 are symmetrically arranged about the central axis of the water collecting bucket 3, the backwash water inlet pipe 11 and the lower water outlet pipe 12 are both arranged at the bottom of the water collecting bucket 3, and filtered clear water is discharged through the lower water outlet pipe 12.

The water inlet and distribution tank 4 is communicated with an upper water inlet pipe 13 and a backwashing water outlet pipe 14, the upper water inlet pipe 13 and the backwashing water outlet pipe 14 are symmetrically arranged about the central axis of the filter main body 1, water in the sedimentation tank is sent into the filter through the upper water inlet pipe 13, and backwashed water flow is discharged through the backwashing water outlet pipe 14.

The top of water inlet water distribution tank 4 is equipped with from cat ladder 15, is equipped with pavement board and railing on the cat ladder 15, and the staff can move in the platform and observe, overhaul, and when many filters were operated, pavement board and railing on can be linked together each filter, and the simultaneous observation and the maintenance of many equipment of being convenient for.

The filter main body 1 is provided with an inspection manhole 16, and when the inside of the filter is required to be inspected, workers inspect the filter through the manhole.

In order to achieve a good filtering effect, a plurality of water filtering caps 6 are equidistantly spaced on the susceptor plate 5.

Wherein, as the preferable thickness of the fine quartz sand layer 9 is larger than the thickness of the medium quartz sand layer 8, the thickness of the medium quartz sand layer 8 is the same as that of the coarse quartz sand layer 7, which is favorable for removing impurities in water, and has the advantages of small filtration resistance, small specific surface area, strong acid and alkali resistance and good pollution resistance.

In the actual sewage treatment process, during normal filtering operation, suspended matters in the filtered water are: the upper water inlet pipe 13 and the lower water outlet pipe 12 are opened, the backwash water inlet pipe 11 and the backwash water outlet pipe 14 are closed, gravity water enters the water inlet and distribution tank 4 through the upper water inlet pipe 13, water passes through the buffer zone 10 from top to bottom, and then sequentially passes through the fine quartz sand layer 9 for filtration, the medium quartz sand layer 8, the coarse quartz sand layer 7, the water filtering cap 6 and the lining plate 5 and then enters the water collecting bucket 3, and the filtered water enters the clean water tank through the lower water outlet pipe 12 for the next treatment section or use.

When the filtering layer is blocked, and the filtering effect is poor, the back flush filter needs to be regenerated to recover the service performance: the lower water outlet pipe 12 is closed, the backwash water inlet pipe 11 and the backwash water outlet pipe 14 are opened, the filter water inlet pipe is not required to be closed, an automatic control valve and an automatic control program are saved, backwash strength is 12-16L/square.S, backwash water pressure is 0.15-0.2Mpa, backwash water enters the water collecting bucket 3, the backwash water reversely passes through the lining support plate 5, the water filtering cap 6, the coarse grain quartz sand layer 7, the medium grain quartz sand layer 8 and the fine quartz sand layer 9, suspended matters on the quartz sand enter the water inlet water distribution tank 4 along with backwash water, the backwash water enters a front regulating tank or a sewage tank through the backwash water outlet pipe 14, the quartz sand entering the water inlet water distribution tank 4 automatically falls back to the surface of the fine quartz sand layer 9 in a backwash standing stage, and cannot be accumulated in the water inlet water distribution tank 4, the water inlet water distribution tank 4 does not need to be cleaned again, and maintenance time and maintenance cost are saved.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The gravity fine sewage filter is characterized by comprising a cylindrical filter main body (1), wherein the filter main body (1) is supported by a plurality of supporting legs (2), a water collecting bucket (3) is arranged at the bottom of the filter main body (1), and a water inlet and distribution groove (4) is arranged at the top of the filter main body (1);

the filtering main body (1) and the water collecting hopper (3) are divided through a lining support plate (5), a plurality of water filtering caps (6) are arranged on the lining support plate (5), a coarse-grain quartz sand layer (7), a medium-grain quartz sand layer (8) and a fine quartz sand layer (9) are sequentially arranged at the top of the lining support plate (5) from bottom to top, and a buffer zone (10) is formed between the fine quartz sand layer (9) and the top of the filtering main body (1);

the water collecting hopper (3) is communicated with a backwash water inlet pipe (11) and a lower water outlet pipe (12), the backwash water inlet pipe (11) and the lower water outlet pipe (12) are symmetrically arranged about the central axis of the water collecting hopper (3), and the backwash water inlet pipe (11) and the lower water outlet pipe (12) are both arranged at the bottom of the water collecting hopper (3);

the water inlet and distribution tank (4) is communicated with an upper water inlet pipe (13) and a backwashing water outlet pipe (14), the upper water inlet pipe (13) and the backwashing water outlet pipe (14) are symmetrically arranged about the central axis of the filtering main body (1), and the top of the water inlet and distribution tank (4) is provided with a self-climbing ladder (15).

2. A gravity fine filter for sewage according to claim 1, characterized in that the filter body (1) is provided with an inspection manhole (16).

3. A gravity fine filter for sewage according to claim 1, characterized in that a plurality of filter caps (6) are arranged on the setting-off plate (5) at equidistant intervals.

4. A sewage gravity fine filter according to claim 1, characterised in that the thickness of the fine quartz sand layer (9) is greater than the thickness of the medium quartz sand layer (8), the medium quartz sand layer (8) being the same as the coarse quartz sand layer (7).