CN214299598U - Cold rolling emulsion effluent treatment plant - Google Patents

Abstract

The utility model relates to a cold rolling emulsion effluent treatment plant, including air supporting pond, dull and stereotyped membrane cavity, scraper blade device, sediment groove, medicine pond and product pond, waste water is squeezed into in the air supporting pond, sets up dull and stereotyped membrane cavity in the air supporting pond and is used for waste water to filter, and air supporting pond upper portion sets up scraper blade device and is used for scraping waste residue and the waste oil on waste water surface, and waste residue and waste oil are transported to the sediment inslot through first pump. The water outlet of the flat membrane cavity in the air floatation tank is connected with a water production tank through a second pump, the water production tank is divided into two pipelines after passing through a third pump, one pipeline is connected with the air floatation tank to carry out back flushing on the flat membrane cavity, the other pipeline is delivered outwards, and the medicine tank is connected with the bottom of the air floatation tank through a dissolved air pump. The utility model discloses can reach good effect to sewage treatment.

Description

Cold rolling emulsion effluent treatment plant

Technical Field

The utility model relates to a waste water treatment technical field especially relates to a cold rolling emulsion effluent treatment plant.

Background

The waste water generated by the cutting fluid used in the steel processing process contains a large amount of substances such as emulsified oil, iron powder and the like, the COD content is generally 20000-50000, and the treatment is difficult.

At present, a steam heating demulsification process and a tubular membrane filtration process are commonly adopted in a wastewater treatment process, a tubular ceramic membrane is mostly adopted for physical filtration in the existing treatment mode, and a circulation and cross-flow filtration mode is mostly adopted in the operation process of the tubular ceramic membrane, but the tubular ceramic membrane has certain defects, is easy to block and needs to be frequently cleaned, so that the energy consumption is high, and the treatment cost is high. The recovered waste oil is treated as hazardous waste, and the operating cost of the water plant is also increased.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a cold rolling emulsion effluent treatment plant, it has solved the technical problem that cold rolling emulsion effluent is difficult to handle.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

a cold-rolled emulsion wastewater treatment device comprises an air floatation tank, a flat membrane cavity, a scraper device, a slag tank, a medicine tank and a water production tank;

the flat membrane cavity is arranged in the air floatation tank and is used for filtering wastewater; the scraper plate device is arranged at the upper part of the air floatation tank and is used for scraping waste residues and waste oil on the surface of the waste water; waste residues and waste oil are conveyed into the residue tank through a first pump;

a water outlet of the flat membrane cavity is connected with the water production tank through a second pump, the water production tank is divided into two pipelines after passing through a third pump, one pipeline is connected with the air floatation tank to carry out back flushing on the flat membrane cavity, and the other pipeline is delivered out;

the medicine tank is connected with the bottom of the air floatation tank through a dissolved air pump.

Optionally, the medicament of the medicament pool is a mixed solution of polyacrylamide and polyaluminium chloride.

Optionally, a screw stacking machine or a plate-and-frame filter press is additionally arranged in the slag tank to press cakes on the waste slag and the waste oil.

Optionally, the first pump, the second pump and the third pump are centrifugal pumps.

Optionally, the flat membrane cavity is a ceramic filter membrane.

Optionally, the scraper device includes two rotating shafts, two ends of each rotating shaft are fixed to one of the parallel side walls of the air flotation tank through supporting plates, each rotating shaft is sleeved with two chain trays, four chain trays form two groups of chain trays, each group of chain trays is sleeved with a chain, the two rotating shafts are linked through the chains, a scraper is arranged between the two chains, and two ends of the scraper are fixed to the two chains respectively.

(III) advantageous effects

The utility model has the advantages that: the utility model discloses a cold rolling emulsion effluent treatment plant, the surface of the ceramic filter membrane of adoption has better easy dropoff nature. Aiming at oily wastewater, the ceramic filter membrane after air floatation can have a good removing effect and has a stable effect. The polyacrylamide is yellow solid particles, the polyaluminium chloride is white powdery particles, and both the polyacrylamide and the polyaluminium chloride are sewage precipitation flocculating agents, and the polyacrylamide and the polyaluminium chloride are matched in the using process, so that a good effect on sewage treatment can be achieved. And the oil scraping and the oil residue scraped out are sent to a screw stacking machine or a plate-and-frame filter press to be pressed into cakes, and the cakes are sent to a coking system to be used as coke oven fuel for incineration, so that zero emission of emulsion wastewater is realized.

Drawings

FIG. 1 is a flow chart of the wastewater treatment device for cold rolling emulsion of the present invention.

Fig. 2 is a schematic view of the squeegee assembly of fig. 1.

[ description of reference ]

1: an air floatation tank;

2: a flat membrane cavity;

3: a squeegee assembly; 31: a support plate; 32: a rotating shaft; 33: a chain plate; 34: a chain; 35: a squeegee;

4: a slag groove;

5: a medicine pool;

6: a water producing pool;

7: a first pump;

8: a second pump;

9: a third pump;

10: dissolved air pump.

Detailed Description

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Referring to fig. 1, the embodiment of the utility model provides a cold rolling emulsion effluent treatment plant, including air supporting pond 1, dull and stereotyped membrane cavity 2, scraper means 3, slag notch 4, medicine pond 5 and produce pond 6. Waste water is pumped into the air flotation tank 1, a flat membrane cavity 2 is arranged in the air flotation tank 1 and used for filtering the waste water, and the waste water is finally purified liquid after passing through the flat membrane cavity 2. The upper part of the air floatation tank 1 is provided with a scraper device 3 for scraping waste residues and waste oil on the surface of the waste water. The waste slag and oil are transported into the slag chute 4 by a first pump 7. And a screw stacking machine or a plate-and-frame filter press is arranged in the slag tank 4 in an auxiliary mode to press cakes of waste slag and waste oil, the pressed cakes in the slag tank 4 are used for blending coal, and the blended coal is finally sent to a coking system to be used as medium coke oven fuel for burning.

The water outlet of the flat membrane cavity 2 in the air floatation tank 1 is connected with a water production tank 6 through a second pump 8, the water production tank 6 is divided into two pipelines after passing through a third pump 9, one pipeline is connected with the air floatation tank 1, the flat membrane cavity 2 is backwashed, and the other pipeline is delivered. Under normal conditions, the liquid in the water producing pond 6 is delivered outwards, and if more impurities are accumulated outside the flat membrane cavity 2, the flat membrane cavity 2 can be ensured to be normally filtered by adopting backwashing and cleaning.

The medicine pond 5 links to each other with the bottom in the air supporting pond 1 through dissolved air pump 10, and the air water in the dissolved air pump 10 mixes with the waste water in the product pond 6 and produces the microbubble to the microbubble is as the carrier, and waste residue and the waste oil of adhesion aquatic are carried to the surface of water by the bubble and are risen to the surface of water, and with the separation of water, reach solid-liquid separation's purpose, and scraper means 3 scrapes waste residue and waste oil, then sends to slag chute 4.

The medicament in the medicament pool 5 is a mixed solution of polyacrylamide and polyaluminium chloride. Polyacrylamide is a yellow solid particle, polyaluminium chloride is a white powdery particle, and a sewage precipitation flocculant. Therefore, the two are matched in the using process, and a good effect on sewage treatment can be achieved.

Wherein further the first pump 7, the second pump 8 and the third pump 9 are centrifugal pumps.

The utility model discloses the material that the dull and stereotyped membrane cavity 2 that adopts is the ceramic filter membrane, and the nominal aperture of ceramic filter membrane is 0.1 mu m, is applicable to pH at 2-12 within ranges to the upper limit temperature is 80 ℃, has heat resistance, acid resistance and corrosion resistance, can extensively be applicable to all kinds of waste water, especially the waste water of oiliness, organic solvent. The ceramic filter membrane can avoid the problem of dissolving the organic filter membrane by an organic solvent, and can effectively treat high-concentration oily wastewater.

The scraper device 3 comprises two rotating shafts 32, two ends of each rotating shaft 32 are fixed on one of a set of parallel side walls of the air floatation tank 1 through supporting plates 31, two chain discs 33 are sleeved on each rotating shaft 32, the four chain discs 33 form two sets of chain discs 33, one chain 34 is sleeved on each set of chain disc 33, the two rotating shafts 32 are linked through the chains 34, a scraper 35 is arranged between the two chains 34, and two ends of the scraper 35 are fixed on the two chains 34 respectively. The shaft 32 is rotated by an external motor, and the scraper 35 is moved, thereby scraping the waste oil and the waste residue.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (6)

1. The utility model provides a cold rolling emulsion effluent treatment plant, includes air supporting pond (1), dull and stereotyped membrane cavity (2), scraper means (3), sediment groove (4), medicine pond (5) and produces pond (6), its characterized in that:

the flat membrane cavity (2) is arranged in the air floatation tank (1) and is used for filtering wastewater; the scraper device (3) is arranged at the upper part of the air floatation tank (1) and is used for scraping waste residues and waste oil on the surface of the waste water; waste residues and waste oil are transported into the slag tank (4) through a first pump (7);

a water outlet of the flat membrane cavity (2) is connected with the water producing pool (6) through a second pump (8), the water producing pool (6) is divided into two pipelines after passing through a third pump (9), one pipeline is connected with the air floatation pool (1) to carry out back flushing on the flat membrane cavity (2), and the other pipeline is sent out;

the medicine tank (5) is connected with the bottom of the air floatation tank (1) through an air dissolving pump (10).

2. The cold rolling emulsion wastewater treatment apparatus according to claim 1, characterized in that:

the medicament in the medicament pool (5) is a mixed solution of polyacrylamide and polyaluminium chloride.

3. The cold rolling emulsion wastewater treatment apparatus according to claim 1, characterized in that:

and a screw stacking machine or a plate-and-frame filter press is arranged in the slag tank (4) in an auxiliary manner to press cakes on the waste slag and the waste oil.

4. The cold rolling emulsion wastewater treatment apparatus according to claim 1, characterized in that:

the first pump (7), the second pump (8) and the third pump (9) are centrifugal pumps.

5. The cold rolling emulsion wastewater treatment apparatus according to claim 1, characterized in that:

the flat membrane cavity (2) adopts a ceramic filter membrane.

6. The cold rolling emulsion wastewater treatment apparatus according to claim 1, characterized in that:

scraper means (3) include two pivot (32), the both ends of pivot (32) are fixed through backup pad (31) respectively on one of them a set of parallel lateral wall of air supporting pond (1), every two chain dish (33), four have respectively been cup jointed in pivot (32) chain dish (33) constitute two sets of chain dish (33), have cup jointed a chain (34) on every group chain dish (33), two pivot (32) pass through chain (34) realize the linkage, be equipped with scraper blade (35) between two chains (34), the both ends of scraper blade (35) are fixed respectively two on chain (34).

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