CN211688470U - Treatment device for hair product wastewater - Google Patents
Treatment device for hair product wastewater Download PDFInfo
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- CN211688470U CN211688470U CN202020001448.6U CN202020001448U CN211688470U CN 211688470 U CN211688470 U CN 211688470U CN 202020001448 U CN202020001448 U CN 202020001448U CN 211688470 U CN211688470 U CN 211688470U
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Abstract
The utility model relates to the technical field of wastewater treatment, in particular to a treatment device for hair product wastewater, which comprises a reactor, wherein the upper part of the reactor is a mixed filler area containing anaerobic ammonia oxidation sludge and sulfur autotrophic denitrification sludge, and the lower part of the reactor is a suspended sludge area containing heterotrophic denitrification sludge; the anaerobic ammonium oxidation sludge, the heterotrophic denitrification sludge and the sulfur autotrophic denitrification sludge are a coupling system formed by anaerobic ammonium oxidation bacteria, heterotrophic denitrification bacteria and sulfur autotrophic denitrification bacteria; the top water outlet area of the reactor is provided with an overflow weir and a return pipe, and one side above the overflow weir is provided with a water outlet pipe with a water valve; the return pipe and the water inlet pipe are connected in parallel to the suspended sludge area; the bottom of the suspended sludge area is also provided with a sludge discharge pipe for discharging sludge. The utility model has the advantages of the aeration rate is few, the energy consumption is low, do not need plus organic carbon source and mud output low grade, can guarantee that play water quality of water when up to standard greatly reduced send out goods waste water treatment's cost.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a processing apparatus of hair products waste water.
Background
The schchang is the largest raw material collecting and distributing place and export production base in China, and the export amount of the hair products accounts for 49 percent of the export amount of the same type of goods in China and 85 percent of the total export value of the schchang. There are 170 more hair product manufacturing enterprises, nearly ten thousand individual production specialized households, and nearly 25 ten thousand persons of practitioners in the hair product industry chain. The product covers two series, six types and more than one thousand varieties of human hair and chemical fiber, and the product is exported to more than 30 countries and regions in North America, Europe, Asia and Africa. The prosperity of the hair product industry makes great contribution to the economic development of the xuchang city, but the environmental pollution problem, especially the water pollution problem, caused by the development and scale expansion of the hair product industry is also very serious. In order to ensure the sustainable development of hair product industry, it is imperative to take practical measures to treat the waste water generated in the production process of hair products.
The hair product industry refers to the industry of processing human hair, chemical fiber and animal hair into wig products through the processes of pickling, neutralization, bleaching, dyeing post-treatment and the like. The waste water generated in the wig production process is called hair product waste water. The wastewater directly discharged by a hair product factory has a high temperature (40-47 ℃), and the wastewater contains high-concentration NH4 +Low COD concentration, low C/N (C/N < 0.8) and low concentration of reducing sulphur compounds (S) in the waste water due to the large amount of dye used2-、S-And SO3 2-Both detectable), the chroma is higher. Hair product waste water is not treatedDirectly discharged into natural water such as rivers and the like, and extremely large pollution is necessarily caused to the natural water.
At present, conventional biochemical treatment processes, such as A2O process for removing COD and NH from sewage4 +N, the aerobic section being able to remove a portion of the reduced sulphur compounds. However, because the C/N of the sewage is low, a large amount of organic carbon sources are required to be added as electron donors in the traditional nitrification and denitrification process. The traditional nitrification and denitrification process theoretically needs to remove all NH4 +Oxidation of-N to NO3 -N, which requires sufficient aeration and residence time, and is energy intensive. S2-Has high microorganism toxicity, such as inhibiting effect on microorganism activity due to accumulation in anaerobic and anoxic sections. The best treatment mode is a method of pre-chemical oxidation or chemical precipitation to remove the part of sulfide. Although such treatment methods do allow the effluent quality to reach the standard, the use of large amounts of additional chemicals and the large energy consumption undoubtedly increase the cost of wastewater treatment of the hair products. Sulfide and sulfur elementary substance precipitation generated by chemical treatment and an organic carbon source added for completing the denitrification process increase the sludge yield, and the sludge treatment and disposal cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of the traditional denitrification technology in treating the hair product wastewater and providing a treatment device for the hair product wastewater. The utility model discloses a denitrogenation method utilizes anammox microorganism to accomplish main denitrogenation process, and for traditional nitrification denitrification denitrogenation technology, anammox process has the energy consumption low, does not need plus advantages such as organic carbon source and mud output low, can greatly reduced send out goods waste water treatment's cost. NO generated by pre-nitrosation and anammox processes3 -N, introduction and heterotrophic denitrification processes, enabling simultaneous removal of COD and NO produced in the influent3 --N. Aiming at the problem of low C/N of the waste water of hair products and the problem that the inlet water contains low-concentration reducing sulfur-containing compounds (S)2-、S-And SO3 2-) Is characterized by introducing sulfurThe autotrophic denitrification process is used as a supplement of the heterotrophic denitrification process, and nitrogen which cannot be removed in the heterotrophic denitrification process due to the shortage of the organic carbon source in the wastewater is removed.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
designing a treatment device for hair product wastewater, comprising a reactor, wherein the upper part of the reactor is a mixed filler region containing anaerobic ammonia oxidation sludge and sulfur autotrophic denitrification sludge, and the lower part of the reactor is a suspended sludge region containing heterotrophic denitrification sludge;
the anaerobic ammonium oxidation sludge, the heterotrophic denitrification sludge and the sulfur autotrophic denitrification sludge are a coupling system formed by anaerobic ammonium oxidation bacteria, heterotrophic denitrification bacteria and sulfur autotrophic denitrification bacteria;
an overflow weir and a return pipe are arranged in a water outlet area at the top of the reactor, and a water outlet pipe with a water valve is arranged on one side above the overflow weir;
the return pipe and the water inlet pipe are connected into the suspended sludge area in parallel;
and a sludge discharge pipe for discharging sludge is also arranged at the bottom of the suspended sludge area.
Further, the height-diameter ratio of the reactor is 5.5-6.5: 1.
further, the height ratio of the mixed filler area to the suspended sludge area is 1.5-2: 1.
Furthermore, a porous supporting layer for separating the mixed filler region from the suspended sludge region is arranged at the bottom of the mixed filler region, and a mesh grid is arranged at the top of the mixed filler region.
Further, the filler in the mixed filler area comprises suspended ball filler and pyrite particles.
Further, the diameter of the suspension ball filler is 50-80 mm, and the aperture of the suspension ball filler shell is not more than 3 mm; the equivalent spherical diameter of the pyrite grains is 5-10 mm.
Further, the mesh diameter of the mesh grid is not more than 40 mm.
Furthermore, the bottom of the suspended sludge area is provided with a water inlet reflection plate, and the upper part of the suspended sludge area is provided with a reflux baffle.
Furthermore, an inserted DO monitoring probe is arranged at the bottom of the mixed filler area, an inserted pH monitoring probe is arranged at the bottom of the suspended sludge area, and the DO monitoring probe and the pH monitoring probe are externally connected with a detection device through wires.
Furthermore, the inlet tube is gone into by the backwash pump to the backwash liquid in the return line, is equipped with the intake pump on the inlet tube, and the end of intaking of inlet tube extends into the suspension mud region of reactor lower part to be connected with the horn mouth of intaking.
The utility model provides a pair of hair products effluent treatment plant, beneficial effect lies in:
(1) the utility model has low energy consumption, and does not need external carbon source and most NH under the condition of low C/N ratio4 +-N and NO2 -the-N is removed through an anaerobic ammonia oxidation process, a denitrification process is only used for removing a small amount of nitrate, the sludge yield is low, and the operation cost is low.
(2) The utility model discloses a sulphur autotrophic denitrification process is as the supplementary of heterotrophic denitrification process, and the reduction in the usable product wastewater of sending out when heterotrophic denitrification process organic carbon source is not enough contains the S of sulphur compound and pyrite slowly-releasing-As an electron donor for denitrification, the addition of an organic carbon source is avoided.
(3) The utility model discloses the suspension ball packs and provides adnexed carrier and great living space for the microorganism, can guarantee the stability and the porosity of packing layer structure. Slow-release S of pyrite filler-And Fe2+Respectively as the electron donor supplement in the sulfur autotrophic denitrification process and the necessary life elements of anaerobic ammonium oxidation bacteria.
(4) The utility model discloses the regional reflecting plate that intakes of suspension filler and reflux baffle make into water and suspension mud intensive mixing, reinforce the mass transfer.
(5) The utility model discloses inoculation mud to anaerobic ammonium oxidation fungus and sulfur autotrophic denitrifying bacteria all chooses single enrichment culture mud for use, has guaranteed reaction unit's quick start.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the structure of a waste water treatment apparatus for hair products according to the present invention;
FIG. 2 is a list of water quality conditions of inlet and outlet water during the operation of the biochemical small-scale reactor in example 1 of the present invention.
Labeled as: 1-an overflow weir; 2-water outlet pipe; 3-a mesh grid; 4-a mixed packing region; 5-DO monitoring probe; 6-porous support layer; 7-a reflux baffle; 8-a water inlet bell mouth; 9-a suspended sludge zone; 10-pH monitoring probe, 11-water inlet reflecting plate; 12-a sludge discharge pipe; 13-a return pipe; 14-a reflux pump; 15-water inlet pump, 16-water inlet pipe.
Detailed Description
The present invention will be further described with reference to the following specific examples. These examples are provided only for illustrating the present invention and are not intended to limit the scope of the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided" and "connected" are to be interpreted broadly, and may be, for example, 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.
The structural features of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the treatment device for the hair product wastewater comprises a reactor, wherein the upper part of the reactor is a mixed filler region 4 containing anaerobic ammonia oxidation sludge and sulfur autotrophic denitrification sludge, and the lower part of the reactor is a suspended sludge region 9 containing heterotrophic denitrification sludge, wherein the height-diameter ratio of the reactor is 5.5-6.5: 1, the height ratio of the mixed filler area 4 to the suspended sludge area 9 is 1.5-2: 1, and the control key point is to ensure that the HRT of the upper mixed filler area 4 is not less than 6h due to the lower metabolic rate of autotrophic microorganisms.
The anaerobic ammonium oxidation sludge, the heterotrophic denitrification sludge and the sulfur autotrophic denitrification sludge are a coupling system formed by anaerobic ammonium oxidation bacteria, heterotrophic denitrification bacteria and sulfur autotrophic denitrification bacteria; is suitable for high ammonia nitrogen, low C/N and contains low-concentration reducing sulfur-containing compound (S)2-、S-And SO3 2-) The treatment of the hair product wastewater. Heterotrophic denitrifying bacteria are located primarily in the suspended sludge zone 9 at the lower portion of the reactor, while anammox bacteria and sulfur autotrophic denitrifying bacteria are located primarily in the upper mixed packing zone 4.
The top water outlet area of the reactor is provided with an overflow weir 1 and a return pipe 13, and one side above the overflow weir 1 is provided with a water outlet pipe 2 with a water valve; the return pipe 13 and the water inlet pipe 16 are connected into the suspended sludge area 9 in parallel; the bottom of the suspended sludge area 9 is also provided with a sludge discharge pipe 12 for discharging sludge, and the sludge discharge pipe 12 is used for discharging redundant sludge in the suspended sludge area, so that the SRT of the suspended sludge area 9 meets the requirements.
The utility model discloses a processing apparatus of hair products waste water, the suspension ball packs and provides adnexed carrier and great living space for the microorganism, can guarantee the stability and the porosity of packing layer structure. Slow-release S of pyrite filler-And Fe2+Respectively used as the electron donor supplement in the sulfur autotrophic denitrification process and the necessary life elements of anaerobic ammonium oxidation bacteria; the water inlet reflection plate and the backflow baffle plate in the suspension filler area enable inlet water to be fully mixed with suspension sludge, mass transfer is strengthened, in addition, single enrichment culture sludge is selected for inoculated sludge of anaerobic ammonium oxidation bacteria and sulfur autotrophic denitrifying bacteria, and quick starting of the reaction device is guaranteed.
Specifically, when the device is used, firstly, the waste water of the fermentation product is cooled by a cooling tower and treated by a front-part nitrosation process and then is pumped into a reactor, and the inlet water is fully mixed with the suspended sludge in the suspended sludge area 9 under the action of a bottom inlet water reflecting plate 11 and an upper return baffle 7. Mainly heterotrophic in the suspended sludge zone 9And (4) denitrification process. The substrate nitrate is mainly generated in the partial nitrosation process in the inlet water and the anaerobic ammonia oxidation process in the return water. Secondly, the water flow in the reactor enters the mixed filler area 4 from the suspended sludge area 9 from bottom to top, the DO concentration is transited from the anoxia of the lower suspended sludge area 9 to the anaerobism of the upper suspended filler area 4, and the microbial community is also transited from the heterotrophic denitrifying microbial community to the anaerobic ammonia oxidizing bacteria and autotrophic denitrifying bacteria mixed microbial community. In the upper mixed filler area, anaerobic ammoxidation reaction is mainly carried out, and NH in the feed water4 +-N and NO2 -N is removed in a ratio of 1: 1.32. The sulfur autotrophic denitrification process is used as a supplement of the heterotrophic denitrification process, and the reduced sulfur compounds with low concentration in the inlet water and the S slowly released by the pyrite are utilized-As an electron donor, the part of nitrate that the heterotrophic denitrification process cannot remove due to the lack of an organic carbon source is removed. Finally, the effluent portion flows back into the inlet tube 16, similar to A2The nitrification liquid reflux of the O process is mainly to remove NO generated in the anaerobic ammonia oxidation process through the denitrification process3 —And N, the other part is discharged through the water outlet pipe 2.
Referring to fig. 1, further, a porous supporting layer 6 for separating the mixed filler region 4 and the suspended sludge region 9 is arranged at the bottom of the mixed filler region 4, a mesh grid 3 is arranged at the top of the mixed filler region 4, and the mesh diameter of the mesh grid 3 is not more than 40 mm.
And a porous bearing layer 6 is arranged to support the mixed filler and distribute water uniformly. The mesh grid 3 is arranged to prevent the suspended ball filler from overflowing, and the diameter of the mesh grid 3 needs to be smaller than that of the suspended ball filler.
Furthermore, the filler in the mixed filler area 4 comprises suspended ball filler and pyrite granules, and the active ingredient FeS of the pyrite granules2The diameter of the suspension ball filler is 50-80 mm, and the aperture of the suspension ball filler shell is not more than 3 mm; the equivalent sphere diameter of the pyrite particles is 5-10 mm, and the aperture of the shell of the suspension ball filler is required to be smaller than the equivalent sphere diameter of the pyrite particles. The outer shell needs to have sufficient mechanical strength to avoid deformation under the weight squeeze of the pyrite particles.
The pyrite granule filler can slowly release Fe under the condition of active microorganism adhesion2+And S-. Sustained release low concentration of S-Can be used as a supplement of an electron donor in the process of sulfur autotrophic denitrification, Fe2+Is an element necessary for ensuring the biomass and the biological activity of the anaerobic ammonium oxidation bacteria, and heme contained in the anaerobic ammonium oxidation bacteria participates in the key process of metabolism. The suspension ball filler has the main functions of providing a skeleton of the filler layer, and still ensuring the structural stability and porosity of the filler layer when the pyrite particles are consumed; and the large space and the internal fiber filaments in the hard shell ensure the large microbial retention amount as the carrier of anaerobic ammonia oxidation and sulfur autotrophic denitrification microorganisms. The collapse of the filler layer structure caused by the consumption of the pyrite grains due to biochemical reaction is avoided, the reduction of the diameter of the ore grains causes the reduction of gaps, and the living space of microorganisms in the filler area is compressed.
Referring to fig. 1, further, a water inlet reflection plate 11 is arranged at the bottom of the suspended sludge area 9, and a reflux baffle 7 is arranged at the upper part.
The water inlet reflection plate 11 and the backflow baffle 7 are arranged, so that the activated sludge is fully mixed with inlet water, and the activated sludge is anaerobic ammonia oxidation sludge, heterotrophic denitrification sludge and sulfur autotrophic denitrification sludge.
Referring to fig. 1, further, an inserted DO monitoring probe 5 is arranged at the bottom of the mixed filler area 4, an inserted pH monitoring probe 10 is arranged at the bottom of the suspended sludge area 9, the DO monitoring probe 5 and the pH monitoring probe 10 are externally connected with a detection device through a wire, the DO concentration of the mixed filler area 4 can be monitored through the DO monitoring probe 5, and the pH monitoring probe 10 can monitor the pH value of the suspended sludge area 9, so that the DO concentration is controlled at 0.5mg/L, and the pH is controlled at 6.5-8.5.
Referring to fig. 1, furthermore, the reflux liquid in the reflux pipe 13 is pumped into a water inlet pipe 16 by a reflux pump 14, a water inlet pump 15 is arranged on the water inlet pipe 16, the water inlet end of the water inlet pipe 16 extends into the suspended sludge area 9 at the lower part of the reactor and is connected with a water inlet bell mouth 8, the reflux pipe 13 is merged into the water inlet pipe 16, and the reflux ratio is controlled to be 4-6: 1. The purpose of the large-proportion backflow is to remove nitrate generated in the anaerobic ammonia oxidation process, so that the TN of the outlet water reaches the standard, and the sufficient mixing of the activated sludge and the inlet water can be further improved by arranging the water inlet bell mouth 8.
Example 1
The utility model discloses still pass through biochemical reaction lab scale, further verify:
the reactor for biochemical reaction lab test adopts the size of 15cm outside diameter, 90cm height and 6:1 height-diameter ratio. The height of the mixed filler layer is 50cm, the height of the suspended sludge area is 30cm, and the height ratio is about 1.67. The diameter of the suspension ball filler is 60mm, and the diameter of the pyrite particle is 8 mm.
The water inlet conditions are as follows: the conversion rate of ammonia nitrogen is 60%, the water temperature is 32 +/-2 ℃, the HRT of the mixed filler region is 8h, the SRT of the suspended sludge region is 10d, and the effluent reflux ratio is 4: 1.
After the sludge inoculation of the biochemical reaction pilot reactor is finished, firstly, the simulated hair product wastewater is subjected to pilot operation, and is replaced by real hair product wastewater 25 days after the pilot operation is started, wherein the hair product wastewater is taken from a front pool of a sewage treatment station of a certain hair product factory and the water quality condition of inlet and outlet water during operation.
Referring to fig. 2, it can be seen from the experiment of the pilot reactor that the treatment device for treating the hair product wastewater through the anaerobic ammonia oxidation-heterotrophic denitrification-sulfur autotrophic denitrification coupled process is well adapted to the treatment of the hair product wastewater. The system has the advantages of fast starting time and high operation stability aiming at the operation treatment of actual wastewater.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A treatment device for hair product wastewater comprises a reactor, and is characterized in that the upper part of the reactor is a mixed filler region (4) containing anaerobic ammonium oxidation sludge and sulfur autotrophic denitrification sludge, and the lower part of the reactor is a suspended sludge region (9) containing heterotrophic denitrification sludge;
the anaerobic ammonium oxidation sludge, the heterotrophic denitrification sludge and the sulfur autotrophic denitrification sludge are a coupling system formed by anaerobic ammonium oxidation bacteria, heterotrophic denitrification bacteria and sulfur autotrophic denitrification bacteria;
an overflow weir (1) and a return pipe (13) are arranged in a water outlet area at the top of the reactor, and a water outlet pipe (2) with a water valve is arranged on one side above the overflow weir (1);
the return pipe (13) and the water inlet pipe (16) are connected into the suspended sludge area (9) in parallel;
and a sludge discharge pipe (12) for discharging sludge is also arranged at the bottom of the suspended sludge area (9).
2. The hair product wastewater treatment device according to claim 1, wherein the height-diameter ratio of the reactor is 5.5-6.5: 1.
3. the hair product wastewater treatment device according to claim 2, wherein the height ratio of the mixed filler region (4) to the suspended sludge region (9) is 1.5-2: 1.
4. A hair product wastewater treatment device according to claim 3, characterized in that the bottom of the mixed filler region (4) is provided with a porous supporting layer (6) for separating the mixed filler region (4) and the suspended sludge region (9), and the top of the mixed filler region (4) is provided with a mesh grid (3).
5. A hair product wastewater treatment device according to claim 4, characterized in that the filler in the mixed filler region (4) comprises suspended ball filler and pyrite granules.
6. The device for treating the hair product wastewater as claimed in claim 5, wherein the diameter of the suspension ball filler is 50-80 mm, and the pore diameter of the suspension ball filler shell is not more than 3 mm; the equivalent spherical diameter of the pyrite grains is 5-10 mm.
7. A hair treatment device according to claim 4, characterized in that the mesh grid (3) has a mesh diameter of not more than 40 mm.
8. The hair product wastewater treatment device according to claim 1, wherein the suspended sludge area (9) is provided with a water inlet reflection plate (11) at the bottom and a return baffle (7) at the upper part.
9. The hair product wastewater treatment device according to claim 1, wherein an inserted DO monitoring probe (5) is arranged at the bottom of the mixed filler area (4), an inserted pH monitoring probe (10) is arranged at the bottom of the suspended sludge area (9), and the DO monitoring probe (5) and the pH monitoring probe (10) are externally connected with a detection device through wires.
10. The hair product wastewater treatment device according to claim 1, wherein the reflux liquid in the reflux pipe (13) is pumped into the water inlet pipe (16) by the reflux pump (14), the water inlet pipe (16) is provided with a water inlet pump (15), and the water inlet end of the water inlet pipe (16) extends into the suspended sludge area (9) at the lower part of the reactor and is connected with the water inlet bell mouth (8).
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| CN202020001448.6U CN211688470U (en) | 2020-01-02 | 2020-01-02 | Treatment device for hair product wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606415A (en) * | 2020-01-02 | 2020-09-01 | 科盛环保科技股份有限公司 | Treatment device and treatment method for hair product wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606415A (en) * | 2020-01-02 | 2020-09-01 | 科盛环保科技股份有限公司 | Treatment device and treatment method for hair product wastewater |
| CN111606415B (en) * | 2020-01-02 | 2024-04-05 | 科盛环保科技股份有限公司 | Hair product wastewater treatment device and treatment method |
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