CN105016516A - Biogas slurry pretreatment device - Google Patents
Biogas slurry pretreatment device Download PDFInfo
- Publication number
- CN105016516A CN105016516A CN201510355570.7A CN201510355570A CN105016516A CN 105016516 A CN105016516 A CN 105016516A CN 201510355570 A CN201510355570 A CN 201510355570A CN 105016516 A CN105016516 A CN 105016516A
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- Prior art keywords
- natural pond
- air
- liquid
- unit
- dissolving
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- 239000002002 slurry Substances 0.000 title abstract 10
- 238000005189 flocculation Methods 0.000 claims abstract description 27
- 230000016615 flocculation Effects 0.000 claims abstract description 27
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 11
- 150000002500 ions Chemical class 0.000 claims abstract description 11
- 229920002521 macromolecule Polymers 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 67
- 238000005188 flotation Methods 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 239000013049 sediment Substances 0.000 claims description 18
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract 3
- 150000002605 large molecules Chemical class 0.000 abstract 2
- 238000006385 ozonation reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- -1 nitrogenous compound Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a biogas slurry pretreatment device. The biogas slurry pretreatment device comprises a flocculation deposition part for flocculation deposition of biogas slurry so that heavy metal ions are removed, an air floatation part for air floatation treatment on the biogas slurry subjected to flocculation deposition so that oil stain in the biogas slurry is removed, an ozonization part for treatment on the biogas slurry subjected to air floatation treatment so that organic large molecules are removed. The biogas slurry pretreatment device realizes step-by-step removal of heavy metal ions, floating oil and organic large molecules, which destroy later membrane treatment and biochemical treatment, in the biogas slurry, realizes solid-vapor separation of biogas slurry and is conducive to later deep treatment.
Description
Technical field
The invention belongs to natural pond liquid process field, be specifically related to a kind of natural pond liquid pretreatment unit.
Background technology
Natural pond liquid to ferment the biogas residue liquid produced through anaerobic reactor, and natural pond liquid waste water quality has following features: 1, solid colloid content is high, is difficult to solid-liquid separation.Natural pond liquid class after fermentation contains a large amount of gluey fine particles, colloid waits organic compound with the acid of a large amount of detritus, and with materials such as N P and K, is good base manure raw material, and analysis is the raw material of good foliage organic fertilizer and ferment fertilizer theoretically.But due in the process of anaerobism natural pond water, a large amount of nitrogenous compounds is after hydrolysis, fail full methanation, form nitrogenous compound or aminocompound, these materials are with stronger positive polarity, and electrically identical with solidity thing, produce resistance, cause the state of being suspended, cause conventional isolation techniques to be difficult to solid/liquid separation; 2, the biodegradability of natural pond liquid is poor.
In process prepared by biogas, the overstand of anaerobism, under the condition of anaerobism, the degradation rate of BOD will far away faster than the degradation rate of COD, and therefore, the biodegradability of natural pond liquid is poor, is difficult to continue biochemical treatment.But in order to advance its higher-grade to utilize further, improve the economic benefit of centralization-breeding factory fowl and animal excrement process engineering, reasonable resource utilization etc., concentrated minimizing and the recycling of development natural pond liquid will be the new direction that natural pond liquid utilizes.Therefore, be necessary to carry out pre-treatment to natural pond liquid, by colloidal particle wherein and the macromolecular substance removal affecting subsequent disposal.
Summary of the invention
Goal of the invention: be solve problems of the prior art, the invention provides a kind of natural pond liquid pretreatment unit, by affect the removal of the heavy metal ion of successive depths process, colloidal particle and oil slick, for follow-up film process is provided convenience.
Technical scheme: for realizing above-mentioned technical purpose, the invention provides a kind of natural pond liquid pretreatment unit, comprising:
Flocculation sediment unit, for carrying out flocculation sediment, heavy-metal ion removal to described natural pond liquid;
Air flotation cell, is connected with described flocculation sediment unit, for carrying out air-flotation process to the natural pond liquid after flocculation sediment, removes the greasy dirt in the liquid of described natural pond;
With ozonize unit, being connected with described air supporting portion, for processing the described natural pond liquid after air-flotation process, removing organic macromolecule.
Particularly, described flocculation sediment unit comprises the equalizing tank, lift pump and the flocculation tank that connect successively, is provided with mixing component in described reaction tank.
Described air flotation cell comprises air compressor, sealing dissolving, force (forcing) pump, air flotation pool, dross box and pressure filter, wherein, air compressor is connected with sealing dissolving, described air compressor is used for pressurized air and pressurized air is delivered to sealing dissolving, and described sealing dissolving is for mixing pressurized air and natural pond liquid;
Described force (forcing) pump is connected with sealing dissolving, for the mixed solution pressurization to the natural pond liquid in sealing dissolving and air;
Described air flotation pool one end is connected with dissolving, and the other end is connected with dross box, pressure filter successively.
In order to promote air flotation effect, described air flotation pool is connected with reflux tank simultaneously, and the parting liquid in a part of air flotation pool needs to be back in reflux tank, then is entered in sealing dissolving by force (forcing) pump.
Described ozonize unit comprises pure oxygen generating unit, ozone generating unit and ozone natural pond liquid mixed cell.
Preferably, described ozone natural pond liquid mixed cell is any one of pvdf membrane contactor and PTFE film contactor
Beneficial effect: compared with prior art, tool of the present invention has the following advantages: the invention provides a kind of natural pond liquid pretreatment unit, comprise flocculation sediment portion, air supporting portion and ozonize portion, the organic macromolecule removed the heavy metal ion in the liquid of natural pond, oil slick step by step and subsequent film process and biochemical treatment are damaged, what both achieved natural pond liquid consolidates-vapour separation, is conducive to again successive depths process.
Accompanying drawing explanation
Fig. 1 is the structural representation of natural pond of the present invention liquid pretreatment unit.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Fig. 1 is the structural representation of the natural pond liquid pretreatment unit of the present embodiment.
Natural pond of the present invention liquid pretreatment unit comprises the flocculation sediment unit, air flotation cell and the ozonize unit that are linked in sequence.Flocculation sediment unit is used for carrying out flocculation sediment to natural pond liquid, removes heavy metal ion wherein; Air flotation cell is connected with flocculation sediment unit, for carrying out air-flotation process to the natural pond liquid after flocculation sediment, removes the oil slick in the liquid of natural pond; Ozonize unit is connected with air flotation cell, for processing the natural pond liquid after air-flotation process, removes the prejudicial organic macromolecule of film.
Flocculation sediment unit comprises equalizing tank, lift pump and flocculation tank.Natural pond liquid stores now in equalizing tank, and establish diving mixer that natural pond liquid is fully stirred homogeneous in pond, natural pond liquid is promoted in flocculation tank through lift pump, adds flocculation agent or coagulating agent reacts, and enters in air flotation cell more afterwards.
Flocculation agent can select calcium hydroxide.Calcium hydroxide can regulate the pH of natural pond liquid, most of heavy metal ion is made to form precipitation of hydroxide or hydrous oxide precipitation, make the content of heavy metal ion in the liquid of pretreated natural pond up to standard, it also avoid the destruction of heavy metal ion to dewatering microporous film in subsequent film processing unit simultaneously.In addition, calcium hydroxide price is lower, can reduce running cost.
Air flotation cell comprises air compressor, sealing dissolving, force (forcing) pump, air flotation pool, dross box and pressure filter, air compressor is connected with sealing dissolving, wherein air compressor is used for pressurized air and pressurized air is delivered to sealing dissolving, and sealing dissolving is for mixing pressurized air and natural pond liquid.Sealing dissolving is used for pressurized air air and the mixing of natural pond liquid; The mixed solution of force (forcing) pump to the natural pond liquid in sealing dissolving and air pressurizes.Air flotation pool is for holding the liquid of releasing in dissolving, liquid in sealing dissolving suddenly reduces to normal pressure in air flotation pool, and the air being dissolved in water, with micro-bubble form, is separated out from water, suspended particle in water is carried and bubbles through the water column, realize solid-liquid separation.The suspended substance be separated is placed on to be put in dross box, after pressure filter pressure-filteration drying, for the preparation of compost.
In order to ensure air flotation effect, the parting liquid in a part of air flotation pool needs to be back in reflux tank, then is entered in sealing dissolving by force (forcing) pump.
Ozonize portion comprises pure oxygen generating unit, ozone generating unit and ozone natural pond liquid mixed cell.Ozone natural pond liquid mixed cell is the membrane contactor prepared with hydrophobic membrane material, preferred pvdf membrane contactor or PTFE film contactor.Ozonize portion processes the natural pond liquid through air-flotation process, is to alleviate or eliminating organic macromolecule completely to the adsorption fouling of the microporous membrane adopted in subsequent film treating processes.
The invention provides a kind of natural pond liquid pretreatment unit, comprise flocculation sediment portion, air supporting portion and ozonize portion, the organic macromolecule removed the heavy metal ion in the liquid of natural pond, oil slick step by step and subsequent film process and biochemical treatment are damaged, what both achieved natural pond liquid consolidates-vapour separation, is conducive to again successive depths process.
Claims (6)
1. a natural pond liquid pretreatment unit, is characterized in that, comprising:
Flocculation sediment unit, for carrying out flocculation sediment, heavy-metal ion removal to described natural pond liquid;
Air flotation cell, is connected with described flocculation sediment unit, for carrying out air-flotation process to the natural pond liquid after flocculation sediment, removes the greasy dirt in the liquid of described natural pond;
With ozonize unit, being connected with described air supporting portion, for processing the described natural pond liquid after air-flotation process, removing organic macromolecule.
2. natural pond according to claim 1 liquid pretreatment unit, is characterized in that, described flocculation sediment unit comprises the equalizing tank, lift pump and the flocculation tank that connect successively, is provided with mixing component in described reaction tank.
3. natural pond according to claim 1 liquid pretreatment unit, it is characterized in that, described air flotation cell comprises air compressor, sealing dissolving, force (forcing) pump, air flotation pool, dross box and pressure filter, wherein, air compressor is connected with sealing dissolving, described air compressor is used for pressurized air and pressurized air is delivered to sealing dissolving, and described sealing dissolving is for mixing pressurized air and natural pond liquid;
Described force (forcing) pump is connected with sealing dissolving, for the mixed solution pressurization to the natural pond liquid in sealing dissolving and air;
Described air flotation pool one end is connected with dissolving, and the other end is connected with dross box, pressure filter successively.
4. natural pond according to claim 3 liquid pretreatment unit, is characterized in that, described air flotation pool is connected with reflux tank simultaneously, and the parting liquid in a part of air flotation pool needs to be back in reflux tank, then is entered in sealing dissolving by force (forcing) pump.
5. natural pond according to claim 1 liquid pretreatment unit, is characterized in that, described ozonize unit comprises pure oxygen generating unit, ozone generating unit and ozone natural pond liquid mixed cell.
6. natural pond according to claim 5 liquid pretreatment unit, is characterized in that, described ozone natural pond liquid mixed cell is any one of pvdf membrane contactor and PTFE film contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355570.7A CN105016516A (en) | 2015-06-24 | 2015-06-24 | Biogas slurry pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355570.7A CN105016516A (en) | 2015-06-24 | 2015-06-24 | Biogas slurry pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105016516A true CN105016516A (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510355570.7A Pending CN105016516A (en) | 2015-06-24 | 2015-06-24 | Biogas slurry pretreatment device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105016516A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336042A (en) * | 2016-10-31 | 2017-01-18 | 威德环境科技股份有限公司 | Biological kitchen waste biogas slurry curing treatment system |
| CN106517579A (en) * | 2016-11-23 | 2017-03-22 | 青海七彩花生物科技有限公司 | Livestock and poultry waste water treatment device and treatment method |
| CN107840530A (en) * | 2017-09-26 | 2018-03-27 | 上海晶宇环境工程股份有限公司 | Kitchen biogas liquor treating process and its special equipment |
| CN109678276A (en) * | 2019-01-17 | 2019-04-26 | 黑龙江翰恒环保科技有限公司 | A kind of method of ozone flocculation combined treatment cattle manure biogas slurry |
| CN113292180A (en) * | 2021-06-08 | 2021-08-24 | 浙江省农业科学院 | Biogas slurry purification treatment device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010008197A2 (en) * | 2008-07-15 | 2010-01-21 | (주)써니엔지텍 | Lake water purification apparatus using microbubbles |
| CN102351386A (en) * | 2011-09-15 | 2012-02-15 | 吉化集团公司 | Potato type ethanol wastewater treatment method and system |
| CN204824439U (en) * | 2015-06-24 | 2015-12-02 | 南京元凯生物能源环保工程有限公司 | Natural pond liquid preprocessing device |
-
2015
- 2015-06-24 CN CN201510355570.7A patent/CN105016516A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010008197A2 (en) * | 2008-07-15 | 2010-01-21 | (주)써니엔지텍 | Lake water purification apparatus using microbubbles |
| CN102351386A (en) * | 2011-09-15 | 2012-02-15 | 吉化集团公司 | Potato type ethanol wastewater treatment method and system |
| CN204824439U (en) * | 2015-06-24 | 2015-12-02 | 南京元凯生物能源环保工程有限公司 | Natural pond liquid preprocessing device |
Non-Patent Citations (2)
| Title |
|---|
| 张自杰主编: "《排水工程下册(第四版)》", 30 June 2000, 中国建筑工业出版社 * |
| 韩敏等: "沼液无害化处理和资源化利用文献综述", 《中国环境科学学会学术年会论文集》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336042A (en) * | 2016-10-31 | 2017-01-18 | 威德环境科技股份有限公司 | Biological kitchen waste biogas slurry curing treatment system |
| CN106517579A (en) * | 2016-11-23 | 2017-03-22 | 青海七彩花生物科技有限公司 | Livestock and poultry waste water treatment device and treatment method |
| CN107840530A (en) * | 2017-09-26 | 2018-03-27 | 上海晶宇环境工程股份有限公司 | Kitchen biogas liquor treating process and its special equipment |
| CN109678276A (en) * | 2019-01-17 | 2019-04-26 | 黑龙江翰恒环保科技有限公司 | A kind of method of ozone flocculation combined treatment cattle manure biogas slurry |
| CN113292180A (en) * | 2021-06-08 | 2021-08-24 | 浙江省农业科学院 | Biogas slurry purification treatment device and method |
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Application publication date: 20151104 |