CN109231443B - Industrial wastewater anaerobic desulfurization device and process based on magnetite reinforcement - Google Patents
Industrial wastewater anaerobic desulfurization device and process based on magnetite reinforcement Download PDFInfo
- Publication number
- CN109231443B CN109231443B CN201811113971.1A CN201811113971A CN109231443B CN 109231443 B CN109231443 B CN 109231443B CN 201811113971 A CN201811113971 A CN 201811113971A CN 109231443 B CN109231443 B CN 109231443B
- Authority
- CN
- China
- Prior art keywords
- phase
- acidification
- pipe
- methanogenic
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
本发明公开了一种基于磁铁矿强化的工业废水厌氧脱硫装置及工艺，将磁铁矿矿石经过加工处理后，以铁浓度10g/L投加到酸化相上流式厌氧污泥床反应器(UASB)中搅拌至混匀，之后与产甲烷相UASB反应器相连。本发明可达到如下效果：磁铁矿的投加可以使得酸化相生物多样性增加，而且磁铁矿也可以作为导体材料促进微生物种间直接电子传递过程，使得酸化相硫酸盐去除效率提高。本工艺不仅避免了硫酸盐还原菌和产甲烷菌之间对底物的竞争，还减少了硫酸盐还原所产生的有害气体硫化氢对产甲烷菌的抑制作用，使产甲烷菌在产甲烷相占据绝对的优势。此外，还具有投资成本低、易于操作、运行稳定、去除效果好等特点，适用于含高浓度硫酸盐的工业废水处理。
The invention discloses an anaerobic desulfurization device and a process for strengthening industrial wastewater based on magnetite. After the magnetite ore is processed, it is added to an acidified phase upflow anaerobic sludge bed with an iron concentration of 10 g/L for reaction The reactor (UASB) was stirred until mixed, and then connected to the methanogenic phase UASB reactor. The invention can achieve the following effects: the addition of magnetite can increase the biodiversity of the acidified phase, and the magnetite can also be used as a conductor material to promote the direct electron transfer process between microbial species, so that the sulfate removal efficiency of the acidified phase is improved. This process not only avoids the competition for substrates between sulfate-reducing bacteria and methanogens, but also reduces the inhibitory effect of the harmful gas hydrogen sulfide produced by sulfate reduction on methanogens, so that the methanogens are in the methane-producing phase. occupy an absolute advantage. In addition, it has the characteristics of low investment cost, easy operation, stable operation and good removal effect, and is suitable for the treatment of industrial wastewater containing high concentration sulfate.
Description
Technical Field
The invention relates to an industrial wastewater treatment device and a process.
Background
The anaerobic biological treatment method is an effective treatment technology for treating industrial wastewater containing high-concentration sulfate, such as pharmaceutical wastewater, food wastewater, printing and dyeing wastewater and the like. Sulfate is removed in the anaerobic biological treatment process by reduction to hydrogen sulfide primarily by sulfate-reducing bacteria. However, in a single-phase anaerobic reactor, there is a competitive relationship between sulfate-reducing bacteria and methanogens for the substrate. Sulfate reducing bacteria compete for H2 and acetic acid, and are kinetically and thermodynamically favored, releasing more energy than methanogens, and the reduction product hydrogen sulfide also has an inhibitory effect on methanogens, affecting the amount and quality of the final produced methane.
The two-phase anaerobic reactor can spatially separate the sulfate removal process from the methanogenesis process, so that most of the sulfate is removed from the acidification phase, and the influence on methanogens in the methanogenesis phase is reduced. However, in the acidification phase, most sulfate-reducing bacteria can utilize only H, except that the individual species of the genus Desulfobacter and Desulfomonas can directly utilize glucose as an electron donor2And small molecule volatile fatty acids such as acetic acid, propionic acid, and lactic acid as electron donors. According to the thermodynamic law, sulfatesThe electron donor first utilized by the reducing bacteria is hydrogen, but the hydrogen transfer path among microbial species causes the increase of hydrogen partial pressure in the short hydraulic retention time of an acidification phase, so that the reactor is acidified, and the removal effect of sulfate is influenced.
Magnetite is a black octahedral or dodecahedral crystalline form mineral widely found in nature, and is a conductive mineral containing divalent and trivalent iron in a ratio of 1: 2. Magnetite is widely used in anaerobic reactors. (1) Magnetite can facilitate the decomposition and disposal of complex organic materials such as milk waste water. (2) Magnetite can be used as a conductive material to facilitate direct electron transfer between microbial species such as geobacter and methanogen. (3) Magnetite can also be used as an environmental battery due to its redox activity. Therefore, after the magnetite is added into the acidification phase, the decomposition of complex organic matters can be accelerated to be used as an electron donor of sulfate reducing bacteria, and the generation of a direct electron transfer process between microorganism species with higher electron transfer efficiency and more stability can be promoted, so that the removal rate of sulfate in the acidification phase is improved.
Disclosure of Invention
In order to solve the problems that the removal rate of sulfate in an acidification phase is low, and the waste water containing sulfate in the acidification phase enters a methanogenic phase to inhibit the growth of methanogenic bacteria, the invention provides the following technical scheme: the utility model provides an industrial waste water anaerobic desulphurization device based on magnetite is reinforceed, includes acidizing phase barrel (7) that is equipped with acidizing phase heat preservation, and this acidizing phase barrel (7) distributes from bottom to top in proper order has acidizing phase water-locator, acidizing phase granule mud district, acidizing phase suspension mud district and acidizing phase three-phase separation district. One end of the pipe iii is connected with an acidification phase exhaust pipeline fixed at the upper end of the acidification phase three-phase separator on the upper cover of the acidification phase cylinder body, and the other end is inserted into the waste gas absorption pool. One end of the acidification phase water inlet pump is connected with the lower bottom of the acidification phase water distributor through a pipe ii and a valve i, and the other end is connected with the water inlet tank through a pipe i. One side of the upper part of the middle water tank provided with the sludge settling zone is connected with the upper part of the acidification phase cylinder body through a pipe iv and a valve ii. One end of the sludge reflux pump is connected with the bottom of the middle water tank through a pipe v and a valve iii, and the other end is connected with the lower bottom of the acidification phase water distributor through a pipe vi. The methane-producing phase barrel provided with the methane-producing phase heat-insulating layer is sequentially provided with a methane-producing phase water distributor, a methane-producing phase granular sludge area, a methane-producing phase suspended sludge area and a methane-producing phase three-phase separation area from the bottom to the top. One end of the methane-producing phase water inlet pump is connected with the upper part of the middle water pool through a pipe vii and a valve iv, and the other end is connected with the bottom of the methane-producing phase water distributor through a valve v and a pipe viii. The pipe x is connected with a methane-producing phase exhaust pipeline fixed at the upper end of the methane-producing phase three-phase separator on the upper cover of the methane-producing phase cylinder. The upper side of the methane-producing phase three-phase separation area is connected with a pipe ix and a valve vi. One end of the circulating water pump is connected with the constant-temperature water bath through a pipe xi, and the other end of the circulating water pump is connected with one side below the acidification phase cylinder through a pipe xii. One end of the tube xiii is connected to the other side above the acidification phase cylinder and the other end is connected to the one side below the methanogenic phase cylinder. One end of the tube xiv is connected with one side above the methanogenic phase cylinder body, and the other end is inserted into the constant-temperature water bath kettle; the method is characterized in that: the anaerobic biological treatment process for treating the sulfate wastewater by using the device comprises the following procedures
1) The acidification phase cylinder and the methanogenic phase cylinder are both upflow anaerobic sludge blanket reactors.
2) The startup acidification phase cylinder and the methanogenic phase cylinder both use digested sludge from an anaerobic sludge fermentation tank as a seed sludge, and the sludge concentration (MLSS) is 15-20 g/L.
3) The added magnetite is magnetite ore; firstly, mechanically crushing and grinding magnetite ore into magnetite powder particles, and then screening to obtain magnetite small particles with the particle size of 1-2 mm; washing with dilute hydrochloric acid once to remove impurities on the surface of the particles, washing with ultrapure water for 3 times, and drying in a vacuum drying oven for 10 h.
4) Opening the upper end of the acidification phase cylinder, adding the magnetite small particles in the step 3) at the iron concentration of 10g/L, and stirring for 10-20 minutes by using a glass rod to uniformly mix the magnetite small particles with the sludge.
5) And opening the acidification phase water inlet pump, and sequentially allowing the sulfate wastewater to enter an acidification phase granular sludge area, an acidification phase suspended sludge area and an acidification phase three-phase separation area of the acidification phase cylinder from the water inlet tank through a pipe i, a pipe ii, a valve i and an acidification phase water distributor.
6) Controlling the temperature in the acidification phase cylinder body to be 35-37 ℃; the pH value in the acidification phase cylinder is controlled between 6.0 and 6.5; the hydraulic retention time of the acidification phase cylinder is controlled to be 4-8 hours.
7) The valve ii is opened and the acidified phase cartridge effluent flows through the acidified phase three phase separation zone, pipe iv, and into the upper portion of the intermediate pond.
8) And opening the valve iii and the sludge reflux pump, and refluxing the sludge in the sludge settling area at the bottom of the intermediate pool into the acidification phase cylinder through the pipe v and the pipe vi.
9) And gas generated by the acidification phase is discharged into a waste gas absorption pool containing sodium hydroxide solution through an acidification phase three-phase separator, an acidification phase exhaust pipeline and a pipe iii.
10) And opening a valve iv, a methane-producing phase water inlet pump and a valve v, and enabling the water outlet of the intermediate water tank to flow into a methane-producing phase granular sludge area, a methane-producing phase suspended sludge area and a methane-producing phase three-phase separation area of the methane-producing phase barrel through a pipe vii, a pipe viii and a methane-producing phase water distributor.
11) Controlling the temperature in the methane-producing phase cylinder body to be 35-37 ℃; the pH value in the methanogenic phase cylinder is controlled between 7.5 and 8.5; the hydraulic retention time of the methanogenic phase cylinder is controlled between 8 and 16 hours.
12) And opening the valve vi, and allowing the effluent in the methanogenic phase cylinder to flow out through the methanogenic phase three-phase separation zone and the pipe ix.
13) And gas generated by the methanogenic phase is collected by a methanogenic phase three-phase separator and then is discharged through a methanogenic phase exhaust pipeline and a pipe x.
14) Circulating environment-friendly warm water circulates through a constant-temperature water bath, a pipe xi, a circulating water pump, a pipe xii, an acidification phase heat-insulating layer, a pipe xiii, a methanogenic phase heat-insulating layer and a pipe xiv.
The magnetite-based reinforced industrial wastewater anaerobic desulfurization device and the process are characterized in that: the magnetite is not only beneficial to decomposing complex organic matters, but also can be used as a conductor material to promote the electron transfer process among microorganism species. Sulfate reducing bacteria play a leading role in removing sulfate in the acidification phase, except for specific strains, only small molecular organic matters can be used as electron donors, and the addition of magnetite promotes the decomposition of complex organic matters in inlet water to improve the removal of more sulfate in the shorter hydraulic retention time of the acidification phase. When in useIncreased sulfate load, C/SO4 2-When the proportion is changed and the available organic matters are reduced, the acidification phase of the magnetite is added, and the higher sulfate removal rate can still be maintained. This is related to the fact that magnetite acts as a conductive material in the acidified phase to promote electron transfer between microbial species. In addition, the two-phase anaerobic device spatially separates the sulfate reduction process from the methanogenesis process, thereby not only avoiding the competition between sulfate reducing bacteria and methanogenesis bacteria for substrates, but also reducing the inhibition effect of harmful gas hydrogen sulfide generated by sulfate reduction on the methanogenesis bacteria, and leading the methanogenesis bacteria to occupy absolute advantages in the methanogenesis phase. The process has the characteristics of low investment cost, easy operation, stable operation, good removal effect and the like.
Drawings
FIG. 1 is a schematic diagram of an industrial wastewater anaerobic desulfurization device and a process based on magnetite strengthening.
FIG. 2 is a schematic diagram of the change of sulfate effluent concentration when the load of influent sulfate changes in an industrial wastewater anaerobic desulfurization device and process based on magnetite strengthening.
In fig. 1: 1. a water inlet tank, 2, a pipe i, 3, an acidification phase water inlet pump, 4, a pipe ii, 5, a valve i, 6, an acidification phase water distributor, 7, an acidification phase cylinder, 8, an acidification phase heat insulation layer, 9, an acidification phase three-phase separator, 10, an acidification phase exhaust pipeline, 11, an acidification phase particle sludge area, 12, an acidification phase suspended sludge area, 13, an acidification phase three-phase separation area, 14, a pipe iii, 15, an exhaust gas absorption tank, 16, a valve ii, 17, a pipe iv, 18, an intermediate water tank, 19, a sludge settling area, 20, a pipe v, 21, a valve iii, 22, a sludge reflux pump, 23, a pipe vi, 24, a valve iv, 25, a pipe vii, 26, a methanogenic phase water inlet pump, 27, a valve v, 28, a pipe viii, 29, a methanogenic phase water distributor, 30, a methanogenic phase cylinder, 31, a methanogenic phase heat insulation layer, 32, a methanogenic phase three-phase separator, 33, a methanogenic phase exhaust pipeline 34, a methanogenic phase particle sludge area, 35. a methanogenic phase suspended sludge area 36, a methanogenic phase three-phase separation area 37, valves vi, 38, pipes ix, 39, pipes x, 40, a constant temperature water bath 41, pipes xi, 42, a circulating water pump 43, pipes xii, 44, pipes xiii, 45 and a pipe xiv.
Detailed Description
The magnetite-reinforced industrial wastewater anaerobic desulfurization device and the process have the application mechanism that:
1. magnetite is a conductor material consisting of ferrous iron and ferric iron in a ratio of 1: 2. The magnetite provides growth support for the dissimilatory iron reducing bacteria. In the short hydraulic retention time of the acidification phase, the dissimilatory iron reducing bacteria can decompose complex organic matters into micromolecular organic matters for most sulfate reducing bacteria which only can use the micromolecular organic matters as electron donors. The dissimilatory iron reducing bacteria also tend to increase the diversity of microbial populations in the acidified phase, resulting in improved impact resistance of the acidified phase.
2. The direct electron transfer between microbe species is a high-efficiency electron transfer process which can directly transfer electrons between microbes without passing through intermediates such as hydrogen, formic acid and the like. Magnetite, as a conductive material, acts as cytochrome c and thus facilitates the direct electron transfer process between microbial species.
3. Based on the two functions of magnetite, magnetite is added to the acidification phase of the two-phase anaerobic reactor. When the sulfate load of the acidification phase is increased, the dissimilatory iron reducing bacteria, the sulfate reducing bacteria and the like in the acidification phase play a synergistic role in processes such as direct electron transfer among microbial populations and the like, and the reduction process of sulfate is accelerated. The two-phase anaerobic reactor performs spatial separation on a sulfate reduction process and a methanogenesis process. Therefore, the reduction product hydrogen sulfide in the acidification phase does not influence methanogens in the methanogenic phase.
The invention is further illustrated with reference to the following figures and examples:
as shown in figure 1, the magnetite-based reinforced anaerobic desulfurization device for industrial wastewater has the following technical characteristics: the acidification phase cylinder 7 is provided with an acidification phase heat insulation layer 8, and an acidification phase water distributor 6, an acidification phase granular sludge area 11, an acidification phase suspended sludge area 12 and an acidification phase three-phase separation area 13 are sequentially distributed from the bottom to the top. The pipes iii to 14 are connected at one end to an acidification phase exhaust pipe 10 fixed to the upper end of the acidification phase three-phase separator 9 provided on the upper lid of the acidification phase cylinder 7 and at the other end inserted into a waste gas absorption tank 15. One end of the acidification phase water inlet pump 3 is connected with the lower bottom of the acidification phase water distributor 6 through a pipe ii-4 and a valve i-5, and the other end is connected with the water inlet tank 1 through a pipe i-2. One side of the upper part of the middle water tank 18 provided with the sludge settling zone 19 is connected with the upper part of the acidification phase cylinder body 7 through a pipe iv-17 and a valve ii-16. One end of the sludge return pump 22 is connected with the bottom of the intermediate water tank 18 through a pipe v-20 and a valve iii-21, and the other end is connected with the lower bottom of the acidification phase water distributor 6 through a pipe vi-23. The methanogenic phase cylinder 30 provided with the methanogenic phase insulating layer 31 is sequentially provided with a methanogenic phase water distributor 29, a methanogenic phase granular sludge area 34, a methanogenic phase suspended sludge area 35 and a methanogenic phase three-phase separation area 36 from the bottom to the top. One end of the methanogenic phase feed pump 26 is connected to the upper part of the intermediate water tank 18 via a pipe vii-25 and a valve iv-24, and the other end is connected to the bottom of the methanogenic phase water distributor 29 via a valve v-27 and a pipe viii-28. The pipe x-39 is connected to a methanogenic phase exhaust pipe 33 fixed to the upper end of a methanogenic phase three-phase separator 32 provided on the upper cover of the methanogenic phase cylinder 30. The upper side of the methane-producing phase three-phase separation zone 36 is connected with a pipe ix-38 and a valve vi-37. One end of the circulating water pump 42 is connected with the constant temperature water bath 40 through a pipe xi-41, and the other end is connected with one side below the acidification phase cylinder 7 through a pipe xii-43. One end of the tube xiii-44 is connected to the other side above the acidification phase cylinder 7 and the other end is connected to the side below the methanogenic phase cylinder 30. One end of the tube xiv-45 is connected with one side above the methanogenic phase cylinder 30, and the other end is inserted into the constant temperature water bath 40.
An anaerobic biological process for treating sulfate wastewater by using the device comprises the following specific operation procedures:
the acidification phase cylinder 7 and the methanogenic phase cylinder 30 are both Upflow Anaerobic Sludge Blanket (UASB) reactors.
The startup acidification phase cylinder 7 and the methanogenic phase cylinder 30 both use digested sludge from anaerobic sludge fermentors as the seed sludge, with a sludge concentration (MLSS) of 15-20 g/L.
The added magnetite is magnetite ore; firstly, mechanically crushing and grinding magnetite ore into magnetite powder particles, and then screening to obtain magnetite small particles with the particle size of 1-2 mm; washing with dilute hydrochloric acid once to remove impurities on the surface of the particles, washing with ultrapure water for 3 times, and drying in a vacuum drying oven for 10 h.
Opening the upper end of the acidification phase cylinder 7, adding magnetite with the iron concentration of 10g/L, and stirring with a glass rod for 10-20 minutes, preferably 15 minutes, so as to uniformly mix the magnetite with the sludge.
And (3) opening the acidification phase water inlet pump 3, and sequentially feeding the sulfate wastewater from the water inlet tank 1 into an acidification phase granular sludge zone 11, an acidification phase suspended sludge zone 12 and an acidification phase three-phase separation zone 13 of the acidification phase barrel 7 through a pipe i-2, a pipe ii-4, a valve i-5 and an acidification phase water distributor 6.
The temperature in the acidification phase cylinder 7 is controlled to be 35-37 ℃, and the optimal temperature is 37 ℃; the pH value in the acidification phase cylinder 7 is controlled between 6.0 and 6.5, and the optimal pH value is 6.5; the hydraulic retention time of the acidification phase cylinder 7 is controlled to be 4-8 hours, and the optimal hydraulic retention time is 8 hours.
The valves ii-16 are opened and the acidified phase cartridge 7 effluent flows through the acidified phase three phase separation zone 13, through pipes iv-17 and over the intermediate water basin 18.
The valve iii-21 and the sludge reflux pump 22 are opened, and the sludge in the sludge settling zone 19 at the bottom of the intermediate water tank 18 flows back to the acidification phase cylinder 7 through the pipes v-20 and the pipes vi-23.
The gas generated by the acidification phase is discharged into an exhaust gas absorption pool 15 containing sodium hydroxide solution through an acidification phase three-phase separator 9, an acidification phase exhaust pipeline 10 and pipes iii-14.
The valve iv-24, the methanogenic phase inlet pump 26 and the valve v-27 are opened, and the effluent of the intermediate water tank 18 flows into the methanogenic phase granular sludge zone 34, the methanogenic phase suspended sludge zone 35 and the methanogenic phase three-phase separation zone 36 of the methanogenic phase cylinder 30 through the pipe vii-25, the pipe viii-28 and the methanogenic phase water distributor 29.
The temperature in the methane-producing phase cylinder 30 is controlled to be 35-37 ℃, and the optimal temperature is 37 ℃; the pH value in the methanogenic phase cylinder 30 is controlled between 7.5 and 8.5, and the optimal pH value is 8.0; the hydraulic retention time of the methanogenic phase cylinder 30 is controlled to be 8-16 hours, and the optimal hydraulic retention time is 16 hours.
And opening the valves vi-37, and discharging water in the methanogenic phase cylinder 30 through the methanogenic phase three-phase separation zone 36 and the pipes ix-38.
The gas generated by the methanogenic phase is collected by a methanogenic phase three-phase separator 32 and then discharged through a methanogenic phase exhaust pipeline 33 and a pipe x-39.
The circulating environment-friendly warm water is circulated through a constant-temperature water bath 40, pipes xi-41, a circulating water pump 42, pipes xii-43, an acidification phase heat-insulating layer 8, pipes xiii-44, a methanogenic phase heat-insulating layer 31 and pipes xiv-45.
Example 1:
an upflow anaerobic sludge bed reactor with effective volumes of 1L and 2L is respectively used as an acidification phase cylinder and a methanogenesis phase cylinder to inoculate anaerobic fermentation tank sludge, so that the sludge concentration in the reactor is 16 g/L. The inlet water is artificial simulated sulfate wastewater, COD is 5000mg/L, and SO4 2-Is 1333mg/L, C/SO4 2-It was 3.75 and pH 8.3. The temperature of the acidification phase cylinder is 37 ℃, the hydraulic retention time is 8 hours, and the pH is 6.5. The temperature of the methanogenic phase cylinder is 37 ℃, the hydraulic retention time is 16 hours, and the pH value is 8.4. The removal rate of COD and the removal rate of sulfate of the acidification phase added with magnetite are 42.26 percent and 90.63 percent respectively, which are improved by 6.41 percent and 14.05 percent compared with the blank reactor.
Example 2:
an upflow anaerobic sludge bed reactor with effective volumes of 1L and 2L is respectively used as an acidification phase cylinder and a methanogenesis phase cylinder to inoculate anaerobic fermentation tank sludge, so that the sludge concentration in the reactor is 18 g/L. The inlet water is artificial simulated sulfate wastewater, COD is 5000mg/L, and SO4 2-Is 2000mg/L, C/SO4 2-It was 2.5 and pH 8.2. The temperature of the acidification phase cylinder is 37 ℃, the hydraulic retention time is 8 hours, and the pH is 6.2. The temperature of the methanogenic phase cylinder is 37 ℃, the hydraulic retention time is 16 hours, and the pH value is 8.1. The removal rate of COD and the removal rate of sulfate of the acidification phase added with magnetite are 46.73 percent and 71.91 percent respectively, which are improved by 10.74 percent and 22.35 percent compared with the blank reactor. The conductivity of the granular sludge with magnetite added was 25.62us/cm, while the blank reactor was only 8.34 us/cm.
As shown in FIG. 2, the removal rate of sulfate in the acidified phase of the added magnetite is higher than that in the blank reactor, and when the concentration of sulfate in the inlet water is increased, the acidified phase of the added magnetite is still about 20% higher than that in the blank reactor.
Claims (1)
1. The utility model provides an adopt and strengthen anaerobic biological treatment process of industrial waste water anaerobic desulfurization device processing sulphate waste water based on magnetite which characterized in that: the magnetite-based reinforced industrial wastewater anaerobic desulfurization device comprises an acidification phase cylinder (7) provided with an acidification phase heat-insulating layer (8), wherein an acidification phase water distributor (6), an acidification phase granular sludge area (11), an acidification phase suspended sludge area (12) and an acidification phase three-phase separation area (13) are sequentially distributed on the acidification phase cylinder (7) from bottom to top; one end of the pipe iii (14) is connected with an acidification phase exhaust pipeline (10) fixed at the upper end of the acidification phase three-phase separator (9) on the upper cover of the acidification phase cylinder body (7), and the other end is inserted into a waste gas absorption pool (15); one end of the acidification phase water inlet pump (3) is connected with the lower bottom of the acidification phase water distributor (6) through a pipe ii (4) and a valve i (5), and the other end is connected with the water inlet tank (1) through a pipe i (2); one side above an intermediate water tank (18) provided with a sludge settling zone (19) is connected with the upper part of the acidification phase cylinder body (7) through a pipe iv (17) and a valve ii (16); one end of a sludge reflux pump (22) is connected with the bottom of the intermediate water tank (18) through a pipe v (20) and a valve iii (21), and the other end is connected with the lower bottom of the acidification phase water distributor (6) through a pipe vi (23); a methanogenic phase cylinder (30) provided with a methanogenic phase insulating layer (31) is sequentially distributed with a methanogenic phase water distributor (29), a methanogenic phase granular sludge area (34), a methanogenic phase suspended sludge area (35) and a methanogenic phase three-phase separation area (36) from the bottom to the top; one end of a methanogenic phase water inlet pump (26) is connected with the upper part of the intermediate water tank (18) through a pipe vii (25) and a valve iv (24), and the other end is connected with the bottom of the methanogenic phase water distributor (29) through a valve v (27) and a pipe viii (28); the pipe x (39) is connected with a methane-producing phase exhaust pipeline (33) fixed at the upper end of a methane-producing phase three-phase separator (32) on the upper cover of the methane-producing phase cylinder (30); the upper side of the methanogenic phase three-phase separation zone (36) is connected with a pipe ix (38) and a valve vi (37); one end of a circulating water pump (42) is connected with the constant-temperature water bath (40) through a pipe xi (41), and the other end is connected with one side below the acidification phase cylinder body (7) through a pipe xii (43); one end of the tube xiii (44) is connected with the other side above the acidification phase cylinder (7) and the other end is connected with one side below the methanogenic phase cylinder (30); one end of the tube xiv (45) is connected with one side above the methanogenic phase cylinder (30), and the other end is inserted into the constant-temperature water bath (40);
the anaerobic biological process for treating the sulfate wastewater by using the device comprises the following specific operation procedures:
1) the acidification phase cylinder (7) and the methanogenic phase cylinder (30) are both Upflow Anaerobic Sludge Blanket (UASB) reactors;
2) the starting acidification phase cylinder (7) and the methanogenic phase cylinder (30) both use digested sludge taken from an anaerobic sludge fermentation tank as seed sludge, and the sludge concentration (MLSS) is 15-20 g/L;
3) the added magnetite is magnetite ore; mechanically crushing and grinding magnetite ore into magnetite powder particles, screening to obtain magnetite small particles with the particle size of 1-2mm, washing with dilute hydrochloric acid once to remove impurities on the surfaces of the particles, washing with ultrapure water for 3 times, and then putting into a vacuum drying oven for drying for 10 hours;
4) opening the upper end of the acidification phase cylinder (7), adding the magnetite small particles with the iron concentration of 10g/L, and stirring for 10-20 minutes by using a glass rod to uniformly mix the magnetite small particles with the sludge;
5) an acidification phase water inlet pump (3) is opened, and the sulfate wastewater sequentially enters an acidification phase granular sludge area (11), an acidification phase suspended sludge area (12) and an acidification phase three-phase separation area (13) of an acidification phase barrel (7) from a water inlet tank (1) through a pipe i (2), a pipe ii (4), a valve i (5) and an acidification phase water distributor (6);
6) the temperature in the acidification phase cylinder (7) is controlled to be 35-37 ℃; the pH value in the acidification phase cylinder (7) is controlled between 6.0 and 6.5; the hydraulic retention time of the acidification phase cylinder (7) is controlled to be 4-8 hours;
7) opening a valve ii (16), and leading the outlet water of the acidification phase cylinder (7) to flow into the upper part of an intermediate water pool (18) through an acidification phase three-phase separation zone (13) and a pipe iv (17);
8) opening a valve iii (21) and a sludge reflux pump (22), and refluxing sludge in a sludge settling area (19) at the bottom of the intermediate water tank (18) to the acidification phase cylinder (7) through a pipe v (20) and a pipe vi (23);
9) gas generated by the acidification phase is discharged into a waste gas absorption pool (15) containing sodium hydroxide solution through an acidification phase three-phase separator (9), an acidification phase exhaust pipeline (10) and a pipe iii (14);
10) opening a valve iv (24), a methanogenic phase water inlet pump (26) and a valve v (27), and leading the outlet water of the intermediate water tank (18) to flow into a methanogenic phase granular sludge area (34), a methanogenic phase suspended sludge area (35) and a methanogenic phase three-phase separation area (36) of a methanogenic phase barrel (30) through a pipe vii (25), a pipe viii (28) and a methanogenic phase water distributor (29);
11) the temperature in the methanogenic phase cylinder (30) is controlled at 35-37 ℃; the pH value in the methanogenic phase cylinder (30) is controlled between 7.5 and 8.5; the hydraulic retention time of the methanogenic phase cylinder (30) is controlled to be 8-16 hours;
12) opening the valve vi (37), and enabling effluent in the methanogenic phase cylinder (30) to flow out through the methanogenic phase three-phase separation zone (36) and the pipe ix (38);
13) gas generated by the methanogenic phase is collected by a methanogenic phase three-phase separator (32) and then is discharged by a methanogenic phase exhaust pipeline (33) and a pipe x (39);
14) the circulating environment-friendly warm water circulates through a constant-temperature water bath (40), a pipe xi (41), a circulating water pump (42), a pipe xii (43), an acidification phase heat-insulating layer (8), a pipe xiii (44), a methanogenic phase heat-insulating layer (31) and a pipe xiv (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113971.1A CN109231443B (en) | 2018-09-25 | 2018-09-25 | Industrial wastewater anaerobic desulfurization device and process based on magnetite reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113971.1A CN109231443B (en) | 2018-09-25 | 2018-09-25 | Industrial wastewater anaerobic desulfurization device and process based on magnetite reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109231443A CN109231443A (en) | 2019-01-18 |
| CN109231443B true CN109231443B (en) | 2021-06-22 |
Family
ID=65056169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113971.1A Active CN109231443B (en) | 2018-09-25 | 2018-09-25 | Industrial wastewater anaerobic desulfurization device and process based on magnetite reinforcement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109231443B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113003717A (en) * | 2021-03-11 | 2021-06-22 | 大连理工大学 | Device and process for enhancing denitrification anaerobic methane oxidation denitrification based on magnetite |
| CN113072191B (en) * | 2021-04-22 | 2022-06-07 | 山东大学 | Iron-reinforced sulfate-removal constructed wetland system and use method and application thereof |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269877B (en) * | 2008-04-23 | 2011-01-12 | 南京大学 | Two-stage anaerobic digestion cycle stripping system |
| CN102795739B (en) * | 2011-05-27 | 2014-12-24 | 中国科学院过程工程研究所 | Device and method for comprehensively treating acidic sulfate organic waste water based on biological desulfurization |
| CN102351381A (en) * | 2011-08-16 | 2012-02-15 | 复旦大学 | Device and method for treating sulfate wastewater |
| CN104259173B (en) * | 2014-07-23 | 2016-05-11 | 浙江工商大学 | A kind of H of accurate aerobic landfill2The endogenous cutting method of S and device |
| CN105016574A (en) * | 2015-07-02 | 2015-11-04 | 合肥白云环卫设备有限公司 | Method for processing garbage filtrate |
| CN105110563B (en) * | 2015-08-31 | 2017-09-22 | 南京大学 | A kind of two-phase double-cycling anaerobic device and processing method for handling sulfate-containing organic wastewater |
| CN105130137B (en) * | 2015-10-15 | 2017-03-15 | 中国地质大学（武汉） | The in-situ remediation system of compound polluted underground water and restorative procedure |
| CN106882871B (en) * | 2017-03-06 | 2020-04-10 | 浙江大学 | Nano magnetite coupling wastewater treatment process for enhancing anaerobic microorganism activity |
| CN107043160B (en) * | 2017-05-18 | 2020-02-18 | 大连理工大学 | A two-phase anaerobic treatment device and process enhanced by magnetite and activated carbon |
| CN108033555B (en) * | 2017-11-24 | 2021-05-11 | 北京林业大学 | A method for quickly starting an anaerobic biological treatment system for leachate in a waste incineration plant |
| CN108046427A (en) * | 2018-01-09 | 2018-05-18 | 衢州学院 | Low C/S is than the anaerobic bio-treated method of sulfate-containing organic wastewater under room temperature |
-
2018
- 2018-09-25 CN CN201811113971.1A patent/CN109231443B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109231443A (en) | 2019-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Van Lier et al. | New perspectives in anaerobic digestion | |
| Gannoun et al. | Ecological clarification of cheese whey prior to anaerobic digestion in upflow anaerobic filter | |
| Van Lier et al. | High-rate anaerobic wastewater treatment under psychrophilic and thermophilic conditions | |
| CN101759316B (en) | Method for treating wastewater containing molasses alcohol | |
| KR100260541B1 (en) | Organic matter decomposition method | |
| US20110136213A1 (en) | Three Stage, Multiple Phase Anaerobic Digestion System and Method | |
| CN102923866A (en) | Device for implementing strengthened treatment for sewage through changing magnetic field and sewage treatment method | |
| CN101565719A (en) | Method for producing methane by two-phase multi-stage anaerobic fermentation of organic solid wastes | |
| CN101955294A (en) | Integrated bioreactor as well as application thereof and method for treating high-concentration organic wastewater | |
| CN110079448A (en) | A method and device for preparing biogas by three-stage co-fermentation of straw and manure | |
| CN105543282A (en) | A method of increasing an anaerobic biological hydrogen production yield from organic waste water or waste | |
| CN108046427A (en) | Low C/S is than the anaerobic bio-treated method of sulfate-containing organic wastewater under room temperature | |
| Cheng | Anaerobic digestion for biogas production | |
| Stephenson et al. | Evaluation of startup and operation of four anaerobic processes treating a synthetic meat waste | |
| CN109231443B (en) | Industrial wastewater anaerobic desulfurization device and process based on magnetite reinforcement | |
| Yang et al. | Addition of pig manure hydrolysate as a carbon source to enhance nitrate removal from piggery wastewater under different HRTs | |
| CN102659284B (en) | Regenerated papermaking wastewater treatment system and process | |
| AU2020103128A4 (en) | Closed oxygen-increasing and carbon-increasing sewage treatment system and method suitable for plateau | |
| CN102432097B (en) | Method for quickly starting anaerobic ammonium oxidation in upflow packed bed reactor | |
| CN104556349B (en) | A kind of external source plant nutrient strengthening raw water biological pretreatment technique | |
| CN207933126U (en) | Anaerobic biological treatment apparatus of the low C/S than sulfate-containing organic wastewater under room temperature | |
| CN105800781A (en) | Method for treating cassava alcohol wastewater by filling anaerobic reactor with graphite felt material | |
| Stamatelatou et al. | Biogas production from cheese whey wastewater: laboratory-and full-scale studies | |
| CN104386815B (en) | A kind of method of sewage water denitrification | |
| CN113429076A (en) | Treatment system and treatment method for domestic sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |