CN110790407A - Biogas slurry concentration treatment system and treatment method - Google Patents
Biogas slurry concentration treatment system and treatment method Download PDFInfo
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- CN110790407A CN110790407A CN201910985052.1A CN201910985052A CN110790407A CN 110790407 A CN110790407 A CN 110790407A CN 201910985052 A CN201910985052 A CN 201910985052A CN 110790407 A CN110790407 A CN 110790407A
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- 239000002002 slurry Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000004576 sand Substances 0.000 claims abstract description 71
- 230000001105 regulatory effect Effects 0.000 claims abstract description 40
- 238000001179 sorption measurement Methods 0.000 claims abstract description 29
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 72
- 239000007788 liquid Substances 0.000 claims description 12
- 239000006004 Quartz sand Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 10
- 239000003337 fertilizer Substances 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000003973 irrigation Methods 0.000 abstract description 3
- 230000002262 irrigation Effects 0.000 abstract description 3
- 235000015097 nutrients Nutrition 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000012271 agricultural production Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a biogas slurry concentration treatment system and a treatment method. The biogas slurry concentration treatment system comprises a biogas slurry tank (1), a sand filter (2), a first regulating tank (3), a semicoke adsorption tower (4), a second regulating tank (5), a cartridge filter (6), a reverse osmosis device (7), a concentration tank (8) and a clean water tank (9). Compared with the prior art, the invention has the following advantages and beneficial effects: 1. heavy metals in the biogas slurry are adsorbed by utilizing the adsorption capacity of the semicoke, so that the content of the heavy metals in the biogas slurry is reduced, and the subsequent utilization of the biogas slurry is facilitated; 2. the step-by-step filtration of the sand filter can be completed in the same reactor, and the mutual work of the sand filter is not influenced, and power is not required to be provided; 3. the volume of the treated biogas slurry is reduced to 30 percent of the original volume, and the high-concentration biogas slurry fertilizer is obtained. Meanwhile, the rest 70 percent of clear water can be directly used for irrigation.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a biogas slurry concentration treatment system and a treatment method.
Background
China is a big agricultural country, soil is hardened by applying chemical fertilizers and pesticides for a long time, fertility is reduced, environment and soil are polluted, sustainable agricultural production is influenced, in addition, in recent years, the price of agricultural production data such as chemical fertilizers is greatly increased, the agricultural production cost is increased, and a fertilizer which can partially replace chemical fertilizers, improve soil, has high quality and high efficiency and is economical in price is urgently needed to be found. The biogas residue and the biogas slurry contain rich nutrient components which are very beneficial to the growth of plants and microorganisms.
The biogas slurry contains abundant nutrient elements such as nitrogen, phosphorus, potassium and the like, and is a good liquid fertilizer. Because the biogas slurry is prepared by anaerobic fermentation, the problems of large biogas slurry yield, high treatment cost, difficult storage and transportation, low content of nutrient substances and the like in biogas engineering are not favorable for industrialization and commercialization. Therefore, the volume of the nutrient in the concentrated biogas slurry is reduced and the nutrient elements are improved by separating the nutrient in the concentrated biogas slurry, and simultaneously, the content of heavy metal and organic matters in the biogas slurry is reduced, so that the harmless and resource utilization of the biogas slurry is achieved, and the method is very important for further development and utilization of the biogas slurry.
Disclosure of Invention
The invention aims to solve the problems and provides a biogas slurry concentration treatment system and a treatment method, which are suitable for biogas slurry concentration and purification treatment.
In order to achieve the aim, the invention provides a biogas slurry concentration treatment system, which comprises a biogas slurry tank, a sand filter tank, a first regulating tank, a semicoke adsorption tower, a second regulating tank, a cartridge filter, a reverse osmosis device, a concentration tank and a clean water tank, wherein the first regulating tank is connected with the first regulating tank;
the invention provides a biogas slurry concentration treatment system, which comprises a biogas slurry tank, a sand filter tank, a first regulating tank, a semicoke adsorption tower, a second regulating tank, a cartridge filter, a reverse osmosis device, a concentration tank and a clean water tank, wherein the first regulating tank is connected with the first regulating tank;
the biogas liquid pool is connected with a water inlet at the top of the sand filter;
a water outlet at the bottom of the sand filter is connected with the first adjusting tank;
the first adjusting tank is connected with a water inlet at the top of the semi-coke adsorption tower;
a water outlet at the bottom of the semicoke adsorption tower is connected with the second regulating tank;
the second regulating tank is connected with a water inlet at the bottom of the cartridge filter;
the water outlet at the top of the cartridge filter is connected with the water inlet at the top of the reverse osmosis device;
the water outlet at the upper part of the reverse osmosis device is connected with the clean water tank, and the water outlet at the lower part of the reverse osmosis device is connected with the concentration tank.
Preferably, the connection mode is pipeline connection.
Preferably, the concentration tank is also connected with the first regulating tank through a pipeline.
Preferably, a pressure pump is arranged between the concentration tank and the first regulating tank and used for conveying the concentrated liquid in the concentration tank to the first regulating tank.
Preferably, a pressure pump is arranged between the biogas slurry pool and the sand filter pool and is used for conveying biogas slurry in the biogas slurry pool to the sand filter pool.
As a preferred scheme, a pressure pump is arranged between the first adjusting tank and the semicoke adsorption tower and is used for conveying the biogas slurry in the first adjusting tank to the semicoke adsorption tower.
Preferably, a pressure pump is arranged between the second regulating tank and the cartridge filter and is used for conveying the biogas slurry in the second regulating tank to the cartridge filter.
As the preferred scheme, a valve is arranged at a water inlet close to the top of the sand filter.
Preferably, the packing material of the semicoke adsorption tower is semicoke, the particle size of the semicoke is 100-120 meshes, and the specific surface area is 20m2/g-30m2/g。
As a preferred scheme, the sand filter comprises a first sand filter, a first water collecting space, a second sand filter and a second water collecting space which are sequentially arranged from top to bottom;
the first water collecting space is used for containing biogas slurry filtered by the first sand filter; when the first water collecting space is filled with biogas slurry, the biogas slurry flows into the second sand filter under the action of gravity and upper layer water pressure.
And the second water collecting space is used for containing biogas slurry filtered by the second sand filter.
As a preferred scheme, the biogas liquid pool is connected with a water inlet of the first water collecting space;
the water outlet of the first water collecting space is connected with a first adjusting tank;
the water outlet of the second water collecting space is connected with the first regulating tank;
a valve is arranged at one end close to the water inlet of the first water collecting space;
valves are arranged among the first water collecting space, the second water collecting space and the first adjusting tank.
Preferably, the filler of the first sand filter is coarse and fine sand with the fineness modulus of 3.1-3.7.
Preferably, the filling material of the second sand filter is 50-100 mesh quartz sand.
The second aspect of the present invention provides a biogas slurry concentration treatment method, using the above treatment system, the steps of the biogas slurry concentration treatment method include:
and (2) sequentially passing the biogas slurry in the biogas slurry pool through a sand filter, a first regulating pool, a semicoke adsorption tower, a second regulating pool, a cartridge filter and a reverse osmosis device to finish concentration and purification of the biogas slurry, wherein the concentrated biogas slurry enters a concentration pool, and the purified biogas slurry enters a clean water pool.
Preferably, when the treatment system works, the biogas slurry is pumped into the sand filter from the biogas slurry tank by the pressure pump, and passes through the first sand filter, the first water collecting space, the second sand filter and the second water collecting space in the sand filter, so that large-particle suspended matters are intercepted by coarse and fine sand, and small-particle suspended matters in the biogas slurry are intercepted by quartz sand by the second sand filter; the biogas slurry enters a first regulating tank and then enters a semicoke adsorption tower through a sewage pump so that heavy metals in the biogas slurry are adsorbed by semicoke to complete the adsorption of the heavy metals; then enters a second regulating tank, enters a cartridge filter by a pressure pump to remove fine substances in the biogas slurry, such as tiny quartz sand and semi-coke particles, and further filtration is completed; and finally, the biogas slurry enters the reverse osmosis device from the cartridge filter to carry out reverse osmosis membrane body layering treatment, concentration and purification of the biogas slurry are completed, the concentrated biogas slurry enters a concentration tank, and the purified biogas slurry enters a clean water tank. When the concentration of heavy metal and the concentration effect in the concentration tank meet the national standard requirements, the concentrated biogas slurry can be used as biogas slurry fertilizer, the volume of the treated biogas slurry is reduced to about 30% of the original volume under the common condition, and the clear water can be used for field irrigation; when heavy metal concentration and concentrated effect do not accord with the requirement in the concentrated pond, then inject into the first equalizing basin through the natural pond liquid in the force pump with the concentrated pond and mix with the natural pond liquid in the equalizing basin, carry out above-mentioned step again to guarantee that concentrated concentration meets the requirements.
According to the invention, when the first sand filter in the biogas slurry concentration treatment system fails, biogas slurry can be directly conveyed to the second sand filter through the pressure pump, filtered by the second sand filter, and flows into the second water collecting space and then enters the first adjusting tank for next treatment. When the second sand filter tank in the biogas slurry concentration treatment system breaks down, biogas slurry can be directly conveyed to the first sand filter tank through the pressure pump, filtered by the first sand filter tank, and filtered liquid flows into the first water collecting space without passing through the second sand filter tank and then enters the first adjusting tank for next treatment. Of course, the occurrence of the above phenomena is a special case.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. heavy metals in the biogas slurry are adsorbed by utilizing the adsorption capacity of the semicoke, so that the content of the heavy metals in the biogas slurry is reduced, and the subsequent utilization of the biogas slurry is facilitated;
2. the step-by-step filtration of the sand filter can be completed in the same reactor, and the mutual work of the sand filter is not influenced, and power is not required to be provided;
3. the volume of the treated biogas slurry is reduced to 30 percent of the original volume, and the high-concentration biogas slurry fertilizer is obtained. Meanwhile, the rest 70 percent of clear water can be directly used for irrigation.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic structural diagram of a biogas slurry concentration treatment system according to an embodiment of the invention.
Fig. 2 shows a schematic structural view of a sand filter according to an embodiment of the present invention.
Description of reference numerals: 1-biogas liquid pool, 2-sand filter pool, 3-first regulating pool, 4-semicoke adsorption tower, 5-second regulating pool, 6-cartridge filter, 7-reverse osmosis device, 8-concentration pool, 9-clean water pool, 21-first sand filter pool, 22-first water collecting space, 23-second sand filter pool and 24-second water collecting space.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
The embodiment provides a biogas slurry concentration treatment system, as shown in fig. 1 and 2, the biogas slurry concentration treatment system comprises a biogas slurry tank 1, a sand filter tank 2, a first regulating tank 3, a semicoke adsorption tower 4, a second regulating tank 5, a cartridge filter 6, a reverse osmosis device 7, a concentration tank 8 and a clean water tank 9;
the biogas liquid pool 1 is connected with a water inlet pipeline at the top of the sand filter 2;
the sand filter 2 comprises a first sand filter 21, a first water collecting space 22, a second sand filter 23 and a second water collecting space 24 which are arranged from top to bottom in sequence; the first water collecting space 22 is used for containing biogas slurry filtered by the first sand filter 21; the second water collecting space 24 is used for containing the biogas slurry filtered by the second sand filter 23.
The biogas liquid pool 1 is connected with a water inlet pipeline of the first water collecting space 22;
the water outlet of the first water collecting space 22 is connected with the first adjusting tank 3 through a pipeline; the water outlet of the second water collecting space 24 is connected with the first adjusting tank 3 through a pipeline;
a valve is arranged at one end close to the water inlet of the first water collecting space 22;
valves are arranged among the first water collecting space 22, the second water collecting space 24 and the first adjusting tank 3.
Wherein, the filler of the first sand filter 21 is coarse and fine sand with the fineness modulus of 3.1-3.7, and the filler of the second sand filter 21 is quartz sand with 50-100 meshes.
The first adjusting tank 3 is connected with a water inlet pipeline at the top of the semicoke adsorption tower 4;
a water outlet at the bottom of the semicoke adsorption tower 4 is connected with a second regulating tank 5 through a pipeline;
the second regulating tank 5 is connected with a water inlet pipeline at the bottom of the cartridge filter 6, and a pressure pump is arranged between the second regulating tank and the cartridge filter;
a water outlet at the top of the cartridge filter 6 is connected with a water inlet pipeline at the top of the reverse osmosis device 7;
the water outlet at the upper part of the reverse osmosis device 7 is connected with a clean water tank 9 through a pipeline, and the water outlet at the lower part of the reverse osmosis device 7 is connected with a concentration tank 8 through a pipeline.
The concentration tank 8 is also connected with the first adjusting tank 3 through a pipeline;
and a pressure pump is arranged between the concentration tank 8 and the first regulating tank 3 and is used for conveying the concentrated solution in the concentration tank 8 to the first regulating tank 3.
A pressure pump is arranged between the biogas slurry pool 1 and the sand filter pool 2 and is used for conveying biogas slurry in the biogas slurry pool 1 to the sand filter pool 2;
a pressure pump is arranged between the first adjusting tank 3 and the semicoke adsorption tower 4 and is used for conveying the biogas slurry in the first adjusting tank 3 to the semicoke adsorption tower 4;
a pressure pump is arranged between the second regulating tank 5 and the cartridge filter 6 and is used for conveying the biogas slurry in the second regulating tank 5 to the cartridge filter 6.
A valve is arranged at the water inlet close to the top of the sand filter 2.
The packing material of the semicoke adsorption tower 4 is semicoke, the grain diameter of the semicoke is 100 meshes-120 meshes, and the specific surface area is 20m2/g-30m2/g。
The biogas slurry concentration treatment system is used for treating certain biogas slurry. The biogas slurry is pumped into the sand filter 2 from the biogas slurry tank 1 by a pressure pump, enters the first adjusting tank 3 through the first sand filter 21, the first water collecting space 22, the second sand filter 23 and the second water collecting space 24 in the sand filter 2, enters the semicoke adsorption tower 4 through the sewage pump to complete the adsorption of heavy metals, enters the second adjusting tank 5, enters the security filter 6 through the pressure pump to complete further filtration, finally enters the reverse osmosis device 7 through the security filter 6 to complete the concentration and purification of the biogas slurry, the concentrated biogas slurry enters the concentration tank 8, and the purified biogas slurry enters the clean water tank 9.
Table 1 indexes of concentrated biogas slurry
| Index (I) | Raw biogas slurry | After concentration | Clean water |
| Volume (L) | 12 | 3.6 | 8.4 |
| Ammonia nitrogen (mg/L) | 730.48 | 2429.94 | 2.14 |
| TP(mg/L) | 41.67 | 13.34 | 0.24 |
| COD(mg/L) | 7260.00 | 24112.69 | 37.42 |
| Cu | 0.845 | --- | 0.111 |
| Zn | 1.533 | --- | 0.156 |
| Cd | 0.033 | --- | .003 |
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A biogas slurry concentration treatment system is characterized by comprising a biogas slurry tank (1), a sand filter (2), a first adjusting tank (3), a semicoke adsorption tower (4), a second adjusting tank (5), a security filter (6), a reverse osmosis device (7), a concentration tank (8) and a clean water tank (9);
the biogas liquid pool (1) is connected with a water inlet at the top of the sand filter (2);
a water outlet at the bottom of the sand filter (2) is connected with the first adjusting tank (3);
the first adjusting tank (3) is connected with a water inlet at the top of the semicoke adsorption tower (4);
a water outlet at the bottom of the semicoke adsorption tower (4) is connected with the second regulating tank (5);
the second regulating tank (5) is connected with a water inlet at the bottom of the cartridge filter (6);
the water outlet at the top of the cartridge filter (6) is connected with the water inlet at the top of the reverse osmosis device (7);
the water outlet at the upper part of the reverse osmosis device (7) is connected with the clean water tank (9), and the water outlet at the lower part of the reverse osmosis device (7) is connected with the concentration tank (8).
2. The biogas slurry concentration treatment system according to claim 1, wherein the connection is a pipe connection.
3. The biogas slurry concentration treatment system according to claim 1, wherein,
the concentration tank (8) is also connected with the first regulating tank (3) through a pipeline;
and a pressure pump is arranged between the concentration tank (8) and the first regulating tank (3) and is used for conveying the concentrated solution in the concentration tank (8) to the first regulating tank (3).
4. The biogas slurry concentration treatment system according to claim 1, wherein,
a pressure pump is arranged between the biogas slurry pool (1) and the sand filter (2) and is used for conveying biogas slurry in the biogas slurry pool (1) to the sand filter (2);
a pressure pump is arranged between the first adjusting tank (3) and the semicoke adsorption tower (4) and is used for conveying biogas slurry in the first adjusting tank (3) to the semicoke adsorption tower (4);
a pressure pump is arranged between the second regulating tank (5) and the security filter (6) and is used for conveying the biogas slurry in the second regulating tank (5) to the security filter (6).
5. The biogas slurry concentration treatment system according to claim 1, wherein a valve is arranged at the water inlet close to the top of the sand filter (2).
6. The biogas slurry concentration treatment system according to claim 1, wherein the packing material of the semicoke adsorption tower (4) is semicoke, the particle size of the semicoke is 100-120 meshes, and the specific surface area is 20m2/g-30m2/g。
7. The biogas slurry concentration treatment system according to claim 1, wherein the sand filter (2) comprises a first sand filter (21), a first water collecting space (22), a second sand filter (23) and a second water collecting space (24) which are arranged from top to bottom in sequence;
the first water collecting space (22) is used for containing biogas slurry filtered by the first sand filter (21);
the second water collecting space (24) is used for containing biogas slurry filtered by the second sand filter (23).
8. The biogas slurry concentration treatment system according to claim 7, wherein,
the biogas liquid pool (1) is connected with a water inlet of the first water collecting space (22);
the water outlet of the first water collecting space (22) is connected with a first adjusting tank (3);
the water outlet of the second water collecting space (24) is connected with the first adjusting tank (3);
a valve is arranged at one end close to the water inlet of the first water collecting space (22);
valves are arranged among the first water collecting space (22), the second water collecting space (24) and the first adjusting tank (3).
9. The biogas slurry concentration treatment system according to claim 7, wherein,
the filler of the first sand filter (21) is coarse and fine sand with the fineness modulus of 3.1-3.7;
the filler of the second sand filter (21) is 50-100 mesh quartz sand.
10. A biogas slurry concentration treatment method, which is characterized in that, by using the treatment system of any one of claims 1 to 9, the steps of the biogas slurry concentration treatment method comprise:
the biogas slurry in the biogas slurry pool (1) sequentially passes through a sand filter (2), a first adjusting pool (3), a semicoke adsorption tower (4), a second adjusting pool (5), a security filter (6) and a reverse osmosis device (7) to complete the concentration and purification of the biogas slurry, the concentrated biogas slurry enters a concentration pool (8), and the purified biogas slurry enters a clean water pool (9).
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| CN201910985052.1A CN110790407A (en) | 2019-10-16 | 2019-10-16 | Biogas slurry concentration treatment system and treatment method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202654764U (en) * | 2012-05-07 | 2013-01-09 | 四川聚友生态农业科技有限公司 | Multistage-output water filter |
| CN205099520U (en) * | 2015-11-10 | 2016-03-23 | 四川蒙特新能源科技有限公司 | Concentrated system of reverse osmosis membrane natural pond liquid |
| CN208327576U (en) * | 2018-05-07 | 2019-01-04 | 重庆交通大学 | A kind of biogas slurry concentration systems |
| CN209033836U (en) * | 2018-10-12 | 2019-06-28 | 欧盛腾水处理技术（杭州）有限公司 | Level stream multilayer sand filtration apparatus |
| CN211255469U (en) * | 2019-10-16 | 2020-08-14 | 武汉一念元环境科技有限公司 | Biogas slurry concentration treatment system |
-
2019
- 2019-10-16 CN CN201910985052.1A patent/CN110790407A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202654764U (en) * | 2012-05-07 | 2013-01-09 | 四川聚友生态农业科技有限公司 | Multistage-output water filter |
| CN205099520U (en) * | 2015-11-10 | 2016-03-23 | 四川蒙特新能源科技有限公司 | Concentrated system of reverse osmosis membrane natural pond liquid |
| CN208327576U (en) * | 2018-05-07 | 2019-01-04 | 重庆交通大学 | A kind of biogas slurry concentration systems |
| CN209033836U (en) * | 2018-10-12 | 2019-06-28 | 欧盛腾水处理技术（杭州）有限公司 | Level stream multilayer sand filtration apparatus |
| CN211255469U (en) * | 2019-10-16 | 2020-08-14 | 武汉一念元环境科技有限公司 | Biogas slurry concentration treatment system |
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