CN211999192U - Wig goods wastewater pretreatment systems - Google Patents

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a wig product wastewater pretreatment system, which comprises a first hair filter 1, a second hair filter 2, a third hair filter 3, a fourth hair filter 4, an alkali adjusting tank 5, a blow-off tower 6, a neutralization tank 7 and an adjusting tank 8; the first hair filter 1, the alkali adjusting tank 5, the stripping tower 6, the neutralizing tank 7 and the regulating tank 8 are communicated in sequence; the second hair filter 2 is communicated with the air stripping tower 6; the third hair filter 3 communicates with the neutralization tank 7; the fourth hair filter 4 communicates with the conditioning tank 8. The pretreatment system fully utilizes the characteristics of various production wastewater, adjusts the pretreatment mode, ensures that the pretreatment process is simple and feasible, is economical and reasonable, improves the treatment efficiency, can realize the recycling of resources, is beneficial to the subsequent biochemical treatment, and meets the wastewater treatment requirement of the hair product industry.

Description

Wig goods wastewater pretreatment systems

Technical Field

The utility model belongs to the technical field of the waste water treatment technique and specifically relates to a wig goods wastewater pretreatment system is related to.

Background

The wig product (commonly called as hair product or hair-retaining product) is made up by using human hair, animal hair and chemical fibre as raw material through the processes of acid-washing, water-washing, decolouring, dyeing and finishing washing, etc.. The waste water generated in the production process of wig products is commonly called as hair product waste water or hair-retaining waste water, and due to the special production process, the production waste water contains substances such as fuel, sulfuric acid, ammonium sulfate, amino acid, surfactant, grease, auxiliary agent, hair suspended matters and the like, and the main waste water sources of the waste water comprise pickling waste water, dyeing waste water, neutralization and rinsing waste water, flushing waste water and domestic sewage. The hair product wastewater has the characteristics of high COD, high ammonia nitrogen, high chroma, low carbon-nitrogen ratio, poor biodegradability and the like, and in addition, the production process of the hair product is batch-wise, so that the discharge of the production wastewater is intermittent, the effluent quality is unstable, and the water temperature is high and is generally between 50 and 80 ℃. The water quality characteristics increase the difficulty of the treatment of the waste water of the hair products, so that the waste water treatment is difficult to discharge after reaching the standard.

At present, the main pretreatment methods of the hair product wastewater comprise: 1) various production wastewater is directly mixed and regulated and then enters a subsequent biochemical treatment facility, and the method does not classify and treat various production wastewater, so that the subsequent biochemical treatment difficulty is increased; 2) the method has the advantages that the iron-carbon micro-electrolysis treatment effect is poor, iron-carbon fillers are often hardened, the fillers need to be replaced periodically, the dyeing wastewater is intermittently drained and mixed with the neutralized rinsing wastewater to carry out the air stripping pretreatment, the denitrification efficiency is poor, and stripping gas is directly discharged outside to pollute the atmosphere.

The pretreatment mode is relatively extensive, and the problems of poor treatment effect, difficulty in stable operation, secondary pollution and the like exist. Therefore, a novel hair product wastewater pretreatment system is urgently needed to be developed, so that the production wastewater in each stage is fully utilized, the resource can be recycled, the subsequent biochemical treatment difficulty is reduced, and the wastewater treatment requirement of the hair product industry is met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wig goods wastewater pretreatment systems to solve the problem that current pretreatment systems can't realize sending out goods waste water to the difference and handling.

The utility model provides a wig product wastewater pretreatment system, which comprises a first hair filter, a second hair filter, a third hair filter, a fourth hair filter, an alkali adjusting tank, a blow-off tower, a neutralization tank and an adjusting tank; the first hair filter, the alkali adjusting tank, the stripping tower, the neutralizing tank and the regulating tank are communicated in sequence; the second hair filter is communicated with the air stripping tower; the third hair filter is in communication with the neutralization basin; the fourth hair filter is in communication with the conditioning tank.

The utility model discloses an among the hair products pretreatment systems, first hair filter, the second hair filter, the third hair filter, the fourth hair filter can be used to separate different kinds of hair products waste water respectively, and then the waste water after will filtering separation lets in respectively transfers the alkali pond, blow off the tower, handle in neutralization pond or the equalizing basin, this system can send out the earlier stage treatment of different kinds of hair products waste water, unified processing is carried out again, not only the operating stability of each equipment has been improved, the equipment service life has been improved, and the preliminary treatment effect of waste water has been improved greatly, the degree of difficulty of follow-up biochemical treatment has been reduced.

Further, the first hair filter (1) is communicated with a dyeing wastewater drainage pipe, the second hair filter (2) is communicated with a neutralization rinsing wastewater drainage pipe, the third hair filter (3) is communicated with an acid washing wastewater drainage pipe, and the fourth hair filter (4) is communicated with a cleaning wastewater and domestic sewage drainage pipe.

In the utility model discloses an among the pretreatment systems, first hair filter, transfer alkali pond, blow off the tower, neutralization pond and equalizing basin communicate in proper order, and first hair filter is used for handling dyeing waste water, because dyeing waste water is the acidity, and its main pollutant is BOD, COD, and the waste water after first hair filter treatment gets into transfers alkali pond, transfers alkali pond to transfer waste water pH to 8-10 after, and the pump goes into the blow off tower again and blows off the preliminary treatment, and the denitrogenation effect can reach 80-95%, can reduce the follow-up biochemical treatment degree of difficulty; the second hair filter is communicated with the air stripping tower, the second hair processor is used for processing the neutralized rinsing wastewater, the neutralized rinsing wastewater is alkaline, the pH value is 8-10, the main pollutants are BOD, COD and anion detergent, the wastewater processed by the second hair filter can be directly pumped into the air stripping tower for air stripping pretreatment, water quality adjustment is not needed, and the denitrification effect can reach 80-95%; the third hair filter is communicated with the neutralization tank and is mainly used for treating pickling wastewater, although the pickling wastewater is acidic, main pollutants of the pickling wastewater are grease and suspended matters, the pickling wastewater can be directly discharged into the neutralization tank without being blown off and then discharged into the regulating tank for pretreatment; the fourth hair filter is communicated with the regulating tank and is mainly used for treating cleaning wastewater and domestic sewage, so that the concentration of organic pollutants in the wastewater is low, and the wastewater can be directly discharged to the regulating tank for pretreatment. The pretreatment system fully utilizes the characteristics of various production wastewater, adjusts the pretreatment mode, ensures that the pretreatment process is simple and easy, has reliable effect, is economic and reasonable, can realize the recycling of resources, is beneficial to the subsequent biochemical treatment, and meets the wastewater treatment requirement of the hair product industry.

Further, along the direction from the top of the tower to the bottom of the tower, a first air outlet, a first liquid inlet, a first air inlet and a first liquid outlet are sequentially formed in the stripping tower, and a spray water tank and a packing layer are sequentially arranged in the stripping tower; the spraying water tank is arranged below the first liquid inlet; the packing layer is arranged between the spray water tank and the first air inlet; the alkali adjusting pool and the second hair filter are communicated with the first liquid inlet; the first liquid outlet is communicated with the neutralization tank.

Along the direction from the top of the tower to the bottom of the tower, a first air outlet, a first liquid inlet, a first air inlet and a first liquid outlet are sequentially formed in the air stripping tower, a spray water tank and a packing layer are sequentially arranged in the air stripping tower, multi-surface hollow ball packing is arranged in the packing layer, wastewater in the alkali adjusting tank and wastewater treated by the second hair filter enter the air stripping tower through the first liquid inlet, the wastewater is sprayed to the packing layer from the upper part of the tower to form water drops, the water drops fall down along the clearance of the packing and are in countercurrent contact with air blown upwards or horizontally by a fan from the bottom of the tower, the mass transfer process is completed, ammonia is converted from a liquid phase to a gas phase, and the air.

The absorption tower is further provided with a second gas inlet at the top and a second liquid outlet at the bottom; the first air outlet is communicated with the second air inlet.

The first gas outlet on the stripping tower is connected with the second gas inlet of the absorption tower, absorption liquid hydrochloric acid, sulfuric acid, water and the like are arranged in the absorption tower, gas obtained in the stripping tower can be converted into byproducts such as ammonium sulfate, ammonium chloride, ammonia water and the like, and the condition that the stripping gas is directly discharged outside to pollute the atmosphere is avoided.

Further, a plurality of accident pools are included, and the inlet ends of the accident pools are communicated with the first hair filter, the second hair filter, the third hair filter and the fourth hair filter; and the outlet end of the accident pool is communicated with the adjusting pool.

The utility model discloses an still include a plurality of accident ponds among the pretreatment systems, the entry end and first hair filter, second hair filter, third hair filter and fourth hair filter in accident pond are linked together, and the exit end and the equalizing basin in accident pond are linked together, and when adjusting the alkali pond in the pretreatment systems, blow off tower, absorption tower, neutralization tower etc. when breaking down, waste water can keep in accident pond, then gets into equalizing basin and follow-up biochemical treatment facility in turn.

Further, be provided with first online pH meter in the accent alkali pond, be provided with the online pH meter of second in the adjustment tank.

The on-line pH meter can monitor the pH value of the wastewater in real time, is convenient for timely adjusting the pH value of the wastewater, and improves the pretreatment efficiency of the wastewater.

Furthermore, a perforated aeration pipe is arranged in the regulating tank.

The perforated aeration pipe is arranged in the adjusting tank, and after gas comes out from the circular perforated hole, the gas is reflected by the bottom of the adjusting tank to be aerated, so that the bubbles are small in size and large in quantity, and the degradation of pollutants in wastewater is facilitated.

Further, the filtering precision of the first hair filter, the second hair filter, the third hair filter and the fourth hair filter is 3-5 mm.

In order to meet the requirements of treating wastewater with different hair qualities, the filtering precision of the hair filter is 3-5 mm.

Further, stirrers are arranged inside the alkali adjusting tank and the neutralizing tank.

Further, the alkali adjusting tank is also provided with a dosing component.

The utility model discloses a pretreatment system compares with prior art, has following technological effect:

1. the water temperature of dyeing wastewater generated in the production process of hair products is generally 50-80 ℃, the dyeing wastewater is acidic, the pH value is 3-4, the pH value is adjusted to 8-10 by an alkali adjusting tank, an ideal denitrification effect can be obtained by adopting a blow-off method by utilizing the special water temperature, the denitrification efficiency can reach 80-95%, the treatment difficulty of subsequent biochemical treatment facilities is further reduced, and the treatment cost is reduced;

2. the water temperature of the neutralized rinsing wastewater generated in the production process of hair products is generally 50-80 ℃, the neutralized rinsing wastewater is alkaline, the pH value is 8-10, water quality adjustment is not needed, an ideal denitrification effect can be obtained by using the water temperature and the alkalinity of the neutralized rinsing wastewater through a stripping method, the denitrification efficiency can reach 80-95%, the treatment difficulty of subsequent biochemical treatment facilities is further reduced, and the treatment cost is reduced;

3. the effluent of the stripping tower is alkaline, and the alkalinity of the effluent is utilized to neutralize the pickling wastewater, so that the dosage of the medicament can be reduced, and the treatment cost is reduced;

4. the utility model discloses a pretreatment system can carry out preliminary treatment to the waste water that produces in sending out goods production process, has solved that current pretreatment system treatment effect is poor, operating stability is low, cause negative effects's problem to follow-up biochemical treatment facility.

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

Fig. 1 is a schematic diagram of the wig product wastewater pretreatment system of the present invention.

Description of reference numerals:

1: a first hair filter; 2: a second hair filter; 3: a third hair filter; 4: a fourth hair filter; 5: an alkali adjusting tank; 6: a stripping tower; 7: a neutralization pond; 8: a regulating tank; 9: a first air outlet; 10: a first liquid inlet; 11: a first air inlet; 12: a first liquid outlet; 13: a spray water tank; 14: a filler layer; 15: an absorption tower; 16: a second air inlet; 17: a second liquid outlet; 18: an accident pool; 19: a first online pH meter; 20: a second online pH meter; 21: perforating an aeration pipe; 22: a stirrer; 23: an administration member.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, 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 implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the wig product wastewater pretreatment system of the present invention comprises a first hair filter 1, a second hair filter 2, a third hair filter 3, a fourth hair filter 4, an alkali adjusting tank 5, a stripping tower 6, a neutralization tank 7 and an adjusting tank 8; the first hair filter 1, the alkali adjusting tank 5, the stripping tower 6, the neutralizing tank 7 and the regulating tank 8 are communicated in sequence; the second hair filter 2 is communicated with the air stripping tower 6; the third hair filter 3 communicates with the neutralization tank 7; the fourth hair filter 4 communicates with the conditioning tank 8. The system can carry out grading treatment on different types of hair product wastewater and then carry out unified treatment, thereby not only improving the operation stability and the service life of each device, but also greatly improving the pretreatment effect of the wastewater and reducing the difficulty of subsequent biochemical treatment.

On the basis of the technical scheme, the first hair filter (1) is communicated with a dyeing wastewater drainage pipe, the second hair filter (2) is communicated with a neutralization rinsing wastewater drainage pipe, the third hair filter (3) is communicated with an acid washing wastewater drainage pipe, and the fourth hair filter (4) is communicated with a cleaning wastewater and domestic sewage drainage pipe.

The dyeing wastewater enters a first hair filter 1 to remove hair, short fibers and the like, the pH value is adjusted in an alkali adjusting tank 5, the pH value is generally controlled to be 8-10, the effluent enters a stripping tower 6 to be denitrified, the stripped wastewater enters a neutralization tank 7, the ammonia nitrogen content is controlled to be below 200mg/L, the wastewater is neutralized with pickling wastewater, and the effluent of the neutralization tank 7 is communicated with an adjusting tank 8; the neutralized rinsing wastewater enters a second hair filter 2 to remove hair, short fibers and the like, the effluent enters a stripping tower 6 for denitrification treatment, the content of ammonia nitrogen is controlled to be below 200mg/L, and the stripped wastewater sequentially enters a neutralization tank 7 and an adjusting tank 8; the acid washing wastewater is acidic, after hair and short fiber are filtered by the third hair filter 3, the acid washing wastewater enters a neutralization tank 7 to be neutralized with dyeing wastewater and neutralization rinsing wastewater, the pH value can be controlled between 6 and 8, and then the acid washing wastewater, the dyeing wastewater and the neutralization rinsing wastewater are treated in an adjusting tank 8, the ammonia nitrogen is 50 to 150mg/L, the water temperature is below 35 ℃, and the pH value is between 6 and 9, so that the requirements of subsequent biochemical treatment are met.

On the basis of the technical scheme, further, along the direction from the top of the tower to the bottom of the tower, a first air outlet 9, a first liquid inlet 10, a first air inlet 11 and a first liquid outlet 12 are sequentially formed on the stripping tower 6, and a spray water tank 13 and a packing layer 14 are sequentially arranged inside the stripping tower 6; the spray water tank 13 is arranged below the first liquid inlet 10; the packing layer 14 is arranged between the spray water tank 13 and the first air inlet 11; the alkali adjusting pool 5 and the second hair filter 2 are communicated with the first liquid inlet 10; the first liquid outlet 12 is communicated with the neutralization tank 7. The wastewater in the alkali adjusting tank 5 and the wastewater treated by the second hair filter 2 enter the stripping tower 6 from the first liquid inlet 10, are sprayed to the filler layer from the spray water tank 13 to form water drops, fall along the gap of the filler, and are in countercurrent contact with air blown upwards or horizontally from the bottom of the tower to complete the mass transfer process, so that the ammonia is converted from a liquid phase to a gas phase, and the stripping process is completed.

In order to avoid direct discharge of the stripping gas and atmospheric pollution, the device further comprises an absorption tower 15 on the basis of the technical scheme, wherein a second gas inlet 16 is formed in the top of the absorption tower 15, and a second liquid outlet 17 is formed in the bottom of the absorption tower 15; the first air outlet 9 is communicated with the second air inlet 16. The ammonia nitrogen after stripping is absorbed by different absorption liquids of the absorption tower 15, so that different byproducts such as ammonium chloride, ammonium sulfate, ammonia water and the like can be obtained, secondary pollution is not generated, and the resource recycling can be realized.

On the basis of the above technical solution, it is preferable that a plurality of accident pools 18 are further included, and inlet ends of the accident pools 18 are communicated with the first hair filter 1, the second hair filter 2, the third hair filter 3 and the fourth hair filter 4; the outlet end of the accident pool 18 is communicated with the regulating pool 8. The water outlet ends of the first hair filter and the second hair filter are connected with an accident pool, the water outlet ends of the third hair filter and the fourth hair filter are connected with an accident pool, when some treatment facilities in the pretreatment system are in fault, the accident pool 18 can temporarily store wastewater, the wastewater enters the adjusting pool 8 in batches to be treated, the normal operation of the pretreatment system can be ensured by the arrangement of the accident pool 18, and the service life of the whole pretreatment system can be prolonged.

On the basis of the above preferred technical solution, it is more preferred that the alkali adjusting tank 5 is provided with a first online pH meter 19, and the adjusting tank 8 is provided with a second online pH meter 20. Probes of the first online pH meter 19 and the second online pH meter 20 are in contact with the solutions of the alkali adjusting tank 5 and the regulating tank 8, so that the pH values of the wastewater in the alkali adjusting tank 5 and the regulating tank 8 can be respectively monitored in real time, and intervention and control are timely performed, so that the wastewater pretreatment efficiency is improved.

In order to improve the degradation rate of wastewater pollutants in the adjusting tank 8, a perforated aeration pipe 21 is arranged in the adjusting tank 8. Dyeing wastewater and neutralization rinsing wastewater are neutralized with pickling wastewater after being treated by a stripping tower 6, the dyeing wastewater, the neutralization rinsing wastewater and the pickling wastewater are high in concentration and temperature and are jointly discharged into an adjusting tank 8 together with cleaning wastewater and domestic sewage, the water quality is adjusted by aeration stirring, after gas comes out from a circular perforation, the gas is reflected by the bottom of the adjusting tank 8 and is aerated, so that bubbles are small in size and large in quantity, the degradation of pollutants in the wastewater is improved, the concentration of pollutants entering a subsequent biochemical treatment device and the temperature of the wastewater can be reduced, and the treatment difficulty is reduced.

In addition to the above-described more preferable embodiment, the first hair filter 1, the second hair filter 2, the third hair filter 3, and the fourth hair filter 4 have a filtering accuracy of 3 to 5 mm.

On the basis of the above technical solution, further, stirrers 22 are disposed inside the alkali adjusting tank 5 and the neutralizing tank 7, and a dosing component 23 is disposed in the alkali adjusting tank.

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

Claims (10)

1. A wig product wastewater pretreatment system is characterized by comprising a first hair filter (1), a second hair filter (2), a third hair filter (3), a fourth hair filter (4), an alkali adjusting tank (5), a blow-off tower (6), a neutralization tank (7) and a regulating tank (8);

the first hair filter (1), the alkali adjusting tank (5), the stripping tower (6), the neutralizing tank (7) and the regulating tank (8) are communicated in sequence;

the second hair filter (2) is communicated with the blow-off tower (6);

the third hair filter (3) is in communication with the neutralization basin (7);

the fourth hair filter (4) is in communication with the conditioning tank (8).

2. The pretreatment system according to claim 1, wherein the first hair filter (1) is in communication with a dyeing wastewater drain, the second hair filter (2) is in communication with a neutral rinse wastewater drain, the third hair filter (3) is in communication with a pickling wastewater drain, and the fourth hair filter (4) is in communication with a cleaning wastewater, domestic wastewater drain.

3. The pretreatment system of claim 1, wherein a first air outlet (9), a first liquid inlet (10), a first air inlet (11) and a first liquid outlet (12) are sequentially formed on the stripping tower (6) along the direction from the top of the tower to the bottom of the tower, and a spray water tank (13) and a packing layer (14) are sequentially arranged inside the stripping tower (6);

the spray water tank (13) is arranged below the first liquid inlet (10);

the packing layer (14) is arranged between the spray water tank (13) and the first air inlet (11);

the alkali adjusting pool (5) and the second hair filter (2) are communicated with the first liquid inlet (10);

the first liquid outlet (12) is communicated with the neutralization tank (7).

4. The pretreatment system of claim 2, further comprising an absorption tower (15), wherein a second gas inlet (16) is formed at the top of the absorption tower (15), and a second liquid outlet (17) is formed at the bottom of the absorption tower (15);

the first air outlet (9) is communicated with the second air inlet (16).

5. The pretreatment system according to claim 1, further comprising a plurality of accident pools (18), an inlet end of the accident pool (18) communicating with the first hair filter (1), the second hair filter (2), the third hair filter (3) and the fourth hair filter (4);

the outlet end of the accident pool (18) is communicated with the adjusting pool (8).

6. Pretreatment system according to claim 1, characterized in that a first in-line pH meter (19) is arranged in the conditioning tank (5) and a second in-line pH meter (20) is arranged in the conditioning tank (8).

7. Pretreatment system according to claim 1, characterized in that a perforated aerator pipe (21) is arranged in the conditioning tank (8).

8. The pretreatment system according to any one of claims 1 to 6, wherein the first hair filter (1), the second hair filter (2), the third hair filter (3) and the fourth hair filter (4) have a filtration precision of 3 to 5 mm.

9. Pretreatment system according to claim 7, characterized in that inside the soda tank (5) and the neutralization tank (7) there are provided stirrers (22).

10. The pretreatment system according to claim 8, wherein the soda tank (5) is further provided with an administration member (23).

Images