CN216549934U

CN216549934U - Sewage treatment flocculation filter equipment

Info

Publication number: CN216549934U
Application number: CN202123158147.8U
Authority: CN
Inventors: 邓景山; 董建军; 李冰赫; 彭彩霞; 朱少龙; 史思远
Original assignee: Hebei Liangshan Environmental Protection Consulting Co ltd
Current assignee: Hebei Liangshan Environmental Protection Consulting Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-17
Anticipated expiration: 2031-12-15

Abstract

The utility model provides a sewage treatment flocculation and filtration device, which relates to the technical field of sewage treatment, and comprises a box body, wherein the box body is divided into a flocculation area and a filtration area by a partition plate; a dosing port and a water inlet pipe are arranged at the top of the box body corresponding to the flocculation area, a primary filtering device is arranged in the flocculation area, and a first slag discharge port is arranged on the side wall of the box body corresponding to the upper part of the primary filtering device; the upper edge of the partition board is hermetically connected with the box body, a gap is formed between the lower edge of the partition board and the box body, and a filter screen is arranged in the gap; a filtering device is arranged in the filtering area, a second slag discharge port is arranged at the bottom of the filtering area, and a water outlet is arranged at the top of the filtering area. The utility model has simple structure, and the impurities with different grain diameters after the sewage treatment are filtered by a plurality of filtering units, thereby obtaining the purified water resource. After the filtering effect is reduced, the back washing device is arranged to back wash the filtering units in the device, so that the filtering units are not easy to block, and the service life is prolonged.

Description

Sewage treatment flocculation filter equipment

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment flocculation filtering device.

Background

The existing urban sewage mostly adopts a biological phosphorus removal process, but the treated sewage is difficult to stably meet the first-grade A standard requirement of GB18918-2002 for total phosphorus discharge. Therefore, the secondary effluent after biological treatment needs further advanced treatment to further reduce the phosphorus content in the water, and the advanced treatment mainly adopts a chemical phosphorus removal method for removing phosphorus, inorganic metal salt agents such as FeCl3 are added to be combined with phosphate to generate granular undissolved substances, and then the granular undissolved substances are accumulated to form larger floccules through chemical flocculation reaction and finally removed through filtration.

Above-mentioned in-process, need adopt corresponding filtration equipment to detach the flocculation and precipitation in the water after will handling, and filter equipment among the prior art filters through the filter screen of simple setting more, but because the characteristic of flocculation and precipitation (flocculation and precipitation is small, adopts the filter screen mesh little), when leading to the ordinary pressure to filter, the flocculation is easy to be blockked up the filter screen.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flocculation and filtration device for sewage treatment, which aims to solve the problem that the existing flocculation device is easy to block.

The utility model is realized by the following steps: a sewage treatment flocculation and filtration device comprises a box body, wherein the box body is divided into a flocculation area and a filtration area by a partition plate;

a chemical feeding port and a water inlet pipe are arranged at the top of the box body corresponding to the flocculation area, a primary filtering device is arranged in the flocculation area, a stirring device is arranged at the upper part of the primary filtering device, and a first slag discharge port is arranged at the upper part of the primary filtering device corresponding to the side wall of the box body;

the upper edge of the partition board is hermetically connected with the box body, a gap is formed between the lower edge of the partition board and the box body, and a filter screen is arranged in the gap;

and a filtering device is arranged in the filtering area, a second slag discharge port is arranged at the bottom of the filtering area, and a water outlet is arranged at the top of the filtering area.

Preferably, the filtering device comprises a quartz sand layer, a fiber filtering layer and a compressed sponge filtering layer which are arranged from bottom to top layer by layer.

Preferably, the primary filter device is a metal filter screen

Preferably, a back washing device is also arranged.

Preferably, the backwashing device comprises a backwashing water inlet arranged at the top of the filtering area.

Preferably, a water pump is arranged at the first slag discharge port.

By adopting the technical scheme, the sewage treatment device is simple in structure, and impurities with different particle sizes after sewage treatment are filtered by the plurality of filtering units, so that purified water resources are obtained. After the filtering effect is reduced, the filtering units in the device are backwashed by arranging the backwashing device, so that the filtering units are not easy to block, and the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1-box, 2-baffle, 3-flocculation district, 4-filtration district, 5-add medicine mouth, 6-inlet tube, 7-preliminary filtration device, 8-agitating unit, 9-first row of cinder notch, 10-filter screen, 11-second row of cinder notch, 12-delivery port, 13-back flush water inlet, 14-quartz sand layer, 15-fiber filter layer, 16-compression sponge filter layer.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in figure 1, the utility model provides a sewage treatment flocculation and filtration device, which comprises a box body 1, wherein the box body 1 is internally divided into a flocculation area 3 and a filtration area 4 by a partition plate 2.

The top of the box body 1 corresponding to the flocculation area 3 is provided with a dosing port 5 and a water inlet pipe 6, a flocculating agent is put into the flocculation area 3 through the dosing port 5, and sewage is introduced into the box body through the water inlet pipe 6. The flocculant is a composite cationic inorganic polymeric flocculant taking iron ions as a core, produces strong complexation on phosphate radicals with negative charges, combines to generate granular non-dissolved substances, and then forms a larger flocculating body through chemical flocculation reaction accumulation. The sewage containing the flocculating constituent flows downwards through the primary filtering device 7, and part of the large flocculating constituent is intercepted by the primary filtering device 7 and stays at the upper part of the primary filtering device 7. Preferably, the primary filter device 7 can be a metal filter screen, and can filter out large-particle flocculent bodies in the sewage. The upper part of the primary filter device 7 is provided with a first slag discharge port 9 corresponding to the side wall of the box body 1 for discharging impurities staying on the upper part of the primary filter device 7.

Furthermore, in order to make the flocculation effect more sufficient, the utility model is provided with a stirring device 8 on the upper part of the primary filtering device 7, and the stirring device 8 can be a stirring blade and has a disturbance effect on the water body.

Furthermore, the upper edge of the clapboard 2 is hermetically connected with the box body 1, a gap is formed between the lower edge of the clapboard 2 and the box body 1, and a filter screen 10 is arranged at the gap. The primarily filtered sewage enters the filtering zone 4 after passing through the filter screen 10.

The sewage flows from bottom to top in the filtering area 4, a filtering device is arranged in the filtering area 4, a second slag discharging port 11 is arranged at the bottom of the filtering area 4, and a water outlet 12 is arranged at the top of the filtering area 4. The filtering device comprises a quartz sand layer 14, a fiber filtering layer 15 and a compressed sponge filtering layer 16 which are arranged from bottom to top layer by layer. The quartz sand layer 14 can filter larger impurities in water, the fiber filtering layer 15 can filter fine impurities in water, and the compressed sponge filtering layer 16 can filter fine impurities in water. The purified water is finally obtained after the layer-by-layer filtration, and the purified water flows out through the water outlet 12.

After filtering for a period of time, because the filtering material intercepts the dirt, the clearance between the filtering materials is reduced, the head loss is increased, and the filtering speed is reduced. When the filtering speed of the filtering material is reduced to a certain degree, the filtering material layer needs to be recovered through backwashing.

The utility model is also provided with a back washing device. The back-flushing device comprises a back-flushing water inlet 13 arranged at the top of the filtering area 4. The back washing water inlet 13 leads high-pressure back washing water into the device, and the water flow flows along the reverse direction of the filtering water flow, so that impurities remained on the filtering device, the filtering net and the primary filtering device are washed out and discharged through the first slag discharge port.

Further, a water pump is arranged at the first slag discharge port 9.

The utility model has simple structure, and the impurities with different grain diameters after the sewage treatment are filtered by a plurality of filtering units, thereby obtaining the purified water resource. After the filtering effect is reduced, the filtering units in the device are backwashed by arranging the backwashing device, so that the filtering units are not easy to block, and the service life is prolonged.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A sewage treatment flocculation filtration device is characterized by comprising a box body, wherein the box body is divided into a flocculation area and a filtration area by a partition plate;

2. The flocculation and filtration device for sewage treatment of claim 1, wherein the filtration device comprises a quartz sand layer, a fiber filtration layer and a compressed sponge filtration layer which are arranged from bottom to top layer by layer.

3. A sewage treatment flocculation and filtration apparatus as claimed in claim 1 wherein the primary filtration apparatus is a metal screen.

4. A sewage treatment flocculation and filtration apparatus as claimed in claim 1, wherein a back-flushing means is further provided.

5. The sewage treatment flocculation and filtration device of claim 4, wherein the backwash assembly comprises a backwash water inlet disposed at the top of the filtration zone.

6. The sewage treatment flocculation and filtration device of claim 1, wherein a water pump is disposed at the first deslagging port.