CN108927280B - Bottom slag washing and sorting system - Google Patents
Bottom slag washing and sorting system Download PDFInfo
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- CN108927280B CN108927280B CN201710552254.8A CN201710552254A CN108927280B CN 108927280 B CN108927280 B CN 108927280B CN 201710552254 A CN201710552254 A CN 201710552254A CN 108927280 B CN108927280 B CN 108927280B
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- bottom slag
- washing
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- 239000002893 slag Substances 0.000 title claims abstract description 63
- 238000005406 washing Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000010865 sewage Substances 0.000 claims abstract description 54
- 238000012216 screening Methods 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000004064 recycling Methods 0.000 claims abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 239000013049 sediment Substances 0.000 claims description 16
- 239000010882 bottom ash Substances 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
- B03B5/56—Drum classifiers
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A bottom slag washing and sorting system is suitable for washing and sorting bottom slag generated by an incinerator by using operation water. The sewage flowing out of the bottom slag washing and sorting system enters a sewage treatment system for subsequent treatment. The bottom slag washing and sorting system comprises a bottom slag wet screening unit, a water storage device and a filtering unit. The bottom slag wet screening unit uses the operation water to carry out wet screening treatment on the bottom slag to generate sewage. The water storage device comprises a first pool and a second pool. And sewage generated by the bottom slag wet screening unit flows into the first tank to reduce the pH value and defoam. The filtering unit filters the bottom slag by the water supply processed by the first tank to obtain fine aggregate, and discharges a part of the generated sewage to the sewage treatment system for subsequent treatment. And the other part of the sewage generated by the filtering unit is used as recovered water, flows into the second tank to reduce the pH value and defoam, so that the recovered water flowing out of the second tank can flow back to the bottom slag wet screening unit for recycling.
Description
Technical Field
The invention relates to a treatment system for bottom slag generated by an incinerator, in particular to a bottom slag washing and sorting system.
Background
The garbage disposal is a major environmental issue after the high industrialization and urbanization of human beings. Among the various garbage disposal methods, a garbage disposal method is widely used at present, in which garbage is incinerated by an incinerator and then disposed of. The use of incinerators to treat waste has at least the following advantages: (1) the volume of the garbage can be greatly reduced after the garbage is incinerated by combustion; (2) substances harmful to the environment contained in the garbage can be removed by incineration and combustion; (3) the combustion of the incinerator is implemented in a controlled environment, and the exhaust gas is properly monitored and treated, so that the harm to human bodies can be reduced; and (4) the burned Bottom slag (Bottom Ash) can be recycled, so that the economic benefit of garbage treatment is improved.
After the incineration operation, the residue remaining on the incinerator bed is bottom slag. The currently adopted bottom slag treatment process is to store bottom slag firstly and then carry out the steps of dry screening, wet screening, magnetic separation, eddy current separation, crushing and the like to obtain the required product.
Referring to fig. 1, a bottom slag wet screening system 101 in a conventional incinerator plant area performs a wet screening process using process water 100. Then, the water supply leaving the bottom slag wet screen system 101 sequentially enters a sewage treatment system 102, a primary sedimentation tank 103, a mixing tank 104, a PH value adjusting tank 105, a fast mixing tank 106, a slow mixing tank 107, a final sedimentation tank 108, a buffer tank 109, a filtering device 110, an activated carbon adsorption device 111 and a recovery tank 112 for treatment, and finally flows through a drainage tank 113 for discharge. In addition, a portion of the feed water flowing out of the buffer tank 109 and a portion of the feed water flowing out of the recycling tank 112 can be recycled back to the bottom ash wet screening system 101.
However, the above-mentioned existing bottom slag wet sieving system 101 has high treatment cost of the sewage generated, and the recycling efficiency of the recovered water is low and is not environment-friendly, so it is necessary to find a solution.
Disclosure of Invention
The invention aims to provide a bottom slag washing and sorting system.
The bottom slag washing and sorting system is suitable for washing and sorting the bottom slag generated by the incinerator by using the operation water. The sewage flowing out of the bottom slag washing and sorting system enters a sewage treatment system for subsequent treatment. The bottom slag washing and sorting system comprises a bottom slag wet screening unit, a water storage device and a filtering unit. The bottom slag wet screening unit is used for carrying out wet screening treatment on the bottom slag by using the operation water, and thus sewage is generated. The water storage equipment comprises a first pool and a second pool, and sewage generated by the bottom slag wet screening unit flows into the first pool to reduce the pH value and defoam. The filtering unit is used for filtering the bottom slag by the water supply processed by the first tank to obtain fine aggregates, discharging one part of the generated sewage to the sewage processing system for subsequent processing, taking the other part of the sewage generated by the filtering unit as recovered water, flowing into the second tank to reduce the pH value and defoaming, and enabling the recovered water flowing out of the second tank to flow back to the bottom slag wet screening unit for recycling.
According to the bottom slag washing and sorting system, sulfuric acid is contained in the first tank to reduce the pH value of sewage generated by the bottom slag wet screening unit, and sulfuric acid is contained in the second tank to reduce the pH value of sewage generated by the filtering unit.
According to the bottom slag washing and sorting system, the sulfuric acid in the first tank and the sulfuric acid in the second tank reduce the pH value of the sewage to 6-8.
According to the bottom slag washing and sorting system, the defoaming agent is contained in the first tank so as to defoam sewage generated by the bottom slag wet screening unit.
According to the bottom slag washing and sorting system, the defoaming agent is contained in the second tank to defoam the sewage generated by the filtering unit.
The water storage equipment of the bottom slag washing and sorting system also comprises a stirrer arranged in the first pool, wherein the stirrer is provided with a vertical shaft rod, a motor used for driving the shaft rod to rotate, a row of chains fixedly arranged at the lower end part of the shaft rod so as to rotate along with the shaft rod, and a row of water sprayers fixedly arranged at the upper end part of the shaft rod so as to rotate along with the shaft rod.
According to the bottom slag washing and sorting system, the chain row of the stirrer of the water storage equipment is an iron chain.
According to the bottom slag washing and sorting system, the motor of the stirrer of the water storage equipment drives the shaft rod to rotate at the rotating speed of 5 revolutions per minute.
The invention relates to a bottom slag washing and sorting system, wherein a filtering unit is a plate and frame filter press, a bag filter type dehydrator, a centrifugal dehydrator or a spiral dehydrator.
The invention has the beneficial effects that: reduce pH value, defoaming operation to the water supply that comes from this end sediment wet sieve unit through setting up this first pond, reduce pH value, defoaming operation to the recycled water that comes from this filter unit through setting up this second pond then, make the recycled water can be by this end sediment wet sieve unit recycle, therefore it is close to the zero release to be approached to, and the treatment cost of sewage is lower, and recycled water cyclic utilization's efficiency is higher and more environmental protection.
Drawings
FIG. 1 is a flow chart illustrating the water usage flow of a bottom slag wet screen system of a conventional incinerator plant;
FIG. 2 is a flow chart illustrating the water flow of an embodiment of the bottom ash water-washing sorting system of the present invention;
FIG. 3 is a front view illustrating a plate and frame filter press in this embodiment;
fig. 4 is a side view illustrating the water storage apparatus in this embodiment;
FIG. 5 is a top view illustrating the water storage apparatus; and
fig. 6 is a side view illustrating the mixer provided in the water storage apparatus.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 2, the embodiment of the bottom slag water-washing sorting system of the present invention is suitable for water-washing sorting of bottom slag generated from an incinerator (not shown) with operation water 100. The sewage flowing out of the bottom slag washing and sorting system flows into the sewage treatment system 102 for subsequent treatment. In this embodiment, the bottom slag washing and sorting system comprises a bottom slag wet screening unit 2, a filtering unit 3, and a water storage device 4.
The bottom slag wet sieving unit 2 is used to perform a wet sieving process on the bottom slag with the operation water 100, and thus generates sewage. In this embodiment, when the bottom slag wet sieving unit 2 is used to perform wet sieving treatment on the bottom slag, a water supply unit is disposed in a drum sieve, and the bottom slag is washed by high-pressure water columns while being subjected to rolling sieving in the drum sieve, so as to remove the bottom slag with a particle size smaller than 5.5 mm. Organic matter and chloride ion in the sediment can be dissolved in water and taken away through the scouring mode of high-pressure water column, and high-pressure water column also can erode the sieve mesh of this drum sieve simultaneously, avoids the sieve mesh to be blockked up by sediment at the bottom and reduces screening efficiency. Since the structure of the water supply unit and the trommel is not essential, expect does not need to be additionally detailed in this embodiment.
Referring to fig. 2, 4 and 5, the water storage facility 4 includes a first tank 41, a second tank 42, and a mixer 43 disposed in the first tank 41. As shown in fig. 4 and 5, in the present embodiment, the first tank 41 is constructed by a bottom wall 410 and vertical walls 411, 412, 413, 414. The bottom wall 410 and the vertical walls 411, 412, 413, 414 together define a receiving space for receiving sewage and the agitator 43. The second tank 42 is constructed by a bottom wall 420 and vertical walls 421, 422, 423, 414, while the vertical wall 414 is common to both the first tank 41 and the second tank 42. The bottom wall 420 and the vertical walls 421, 422, 423, 414 define a receiving space for receiving sewage.
As shown in FIG. 2, the sewage generated from the bottom sediment wet sieving unit 2 flows into the first tank 41 to reduce pH and defoam.
Referring to fig. 2 and 3, the filtering unit 3 is used for dewatering and filtering the bottom slag with the water supply processed by the first tank 41 to obtain fine aggregates, pressing the fine aggregates into sludge cakes, and discharging a part of the generated sewage to the sewage treatment system 102 for subsequent treatment. In the present embodiment, the filter unit 3 may be, for example, a plate and frame filter press (as shown in fig. 3), a bag filter type dehydrator, a centrifugal dehydrator, a screw dehydrator, or the like.
As shown in fig. 2, another part of the sewage generated by the filtering unit 3 flows into the second tank 42 as recovered water to further reduce the ph and defoam the sewage. In the present embodiment, the first tank 41 and the second tank 42 contain sulfuric acid to lower the pH of the wastewater to 6-8.
Referring to fig. 5 and 6, in the present embodiment, the agitator 43 includes a vertical shaft 431, a motor 432 for driving the shaft 431 to rotate, a row of chains 433 fixed to a lower end 439 of the shaft 431 to rotate along with the shaft 431, and a row of water sprayers 434 fixed to an upper end 438 of the shaft 431 to rotate along with the shaft 431. The row of chains 433 may be, for example, iron chains.
In this embodiment, the motor 432 drives the shaft 431 to rotate, for example, at 5 rpm, thereby driving the chain 433 to stir the sewage, so as to turn up the sediment in the sewage, thereby preventing the sediment from settling (or hardening). In addition, in the present embodiment, the water is sprayed by the water sprayer 434 to disperse the bubbles.
In the present embodiment, the defoaming agent contained in the first tank 41 may be used to defoam the wastewater, and when the wastewater flows into the second tank 42, the defoaming agent contained in the second tank 42 may exert a further defoaming effect.
Referring to fig. 2, after the other part of the sewage generated by the filtering unit 3 is processed by ph reduction, defoaming, etc. in the second tank 42, the recycled water that can be reused is generated and flows back to the bottom slag wet sieving unit 2 for reuse.
In addition, the sewage treatment system 102 receives, in addition to the sewage from the filter unit 3, sewage generated after the second tank 42 completes the operations of lowering the ph, defoaming, and the like, if necessary. Then, the water supply leaving the sewage treatment system 102 sequentially enters a primary sedimentation tank 103, a mixing tank 104, a pH adjusting tank 105, a fast mixing tank 106, a slow mixing tank 107, a final sedimentation tank 108, a buffer tank 109, a filtering device 110, an activated carbon adsorption device 111, and a recovery tank 112 for treatment, and finally flows through a discharge tank 113 for discharge. Furthermore, part of the feed water flowing out of the buffer tank 109 and part of the feed water flowing out of the recycling tank 112 can be recycled to the bottom sediment wet screening unit 2.
In summary, the bottom slag washing and sorting system of the present invention performs the operations of reducing the ph, stirring and defoaming on the sewage by the water storage device 4 with the stirrer 43, so that the sewage can be recycled by the bottom slag wet screening unit 2, thereby approaching to zero discharge, lowering the sewage treatment cost, and improving the recycling efficiency of the recycled water and protecting the environment, so as to achieve the purpose of the present invention.
Claims (9)
1. The utility model provides a sediment washing sorting system at bottom, is applicable to and carries out washing with the operation water to the sediment that the incinerator produced and selects separately the processing, and the sewage that flows out this sediment washing sorting system at bottom flows into sewage treatment system and carries out subsequent processing, and this sediment washing sorting system at bottom contains a sediment wet screen unit at bottom, and this sediment wet screen unit at bottom is used for carrying out wet-type screening processing with this operation water to this sediment at bottom, and therefore produces sewage, its characterized in that, this sediment washing sorting system at bottom still contains:
the water storage equipment comprises a first tank and a second tank, and sewage generated by the bottom slag wet screening unit flows into the first tank to reduce the pH value and defoam; and
and the filtering unit is used for filtering the bottom slag treated by the first tank by using the sewage treated by the first tank to obtain fine aggregates, discharging one part of the sewage generated by the filtering unit to the sewage treatment system for subsequent treatment, and taking the other part of the sewage generated by the filtering unit as recovered water, and the recovered water flows into the second tank to reduce the pH value and defoam so that the recovered water flowing out of the second tank can flow back to the bottom slag wet screening unit for recycling.
2. The bottom ash washing and sorting system of claim 1, wherein: the first tank contains sulfuric acid to reduce the pH value of the sewage generated by the bottom slag wet screening unit, and the second tank contains sulfuric acid to reduce the pH value of the sewage generated by the filtering unit.
3. The bottom ash washing and sorting system of claim 2, characterized in that: the sulfuric acid in the first tank and the sulfuric acid in the second tank reduce the pH of the wastewater to 6 to 8.
4. The bottom ash washing and sorting system of claim 1, wherein: the defoaming agent is contained in the first tank to defoam the sewage generated by the bottom slag wet screening unit.
5. The bottom ash washing and sorting system of claim 1, wherein: the second tank contains a defoaming agent for defoaming the sewage generated by the filtering unit.
6. The bottom ash washing and sorting system of claim 1, wherein: the water storage equipment further comprises a mixer arranged in the first pool, the mixer is provided with a vertical shaft rod, a motor used for driving the shaft rod to rotate, a row of chains fixedly arranged at the lower end part of the shaft rod to rotate along with the shaft rod, and a row of water sprayers fixedly arranged at the upper end part of the shaft rod to rotate along with the shaft rod.
7. The bottom ash washing and sorting system of claim 6, wherein: the chain of the mixer of the water storage device is an iron chain.
8. The bottom ash washing and sorting system of claim 6, wherein: the motor of the mixer of the water storage device drives the shaft to rotate at a speed of 5 revolutions per minute.
9. The bottom ash washing and sorting system of claim 1, wherein: the filter unit is a plate and frame filter press, a bag filter type dehydrator, a centrifugal dehydrator or a screw dehydrator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106117512A TWI620600B (en) | 2017-05-26 | 2017-05-26 | Bottom slag water washing and sorting system |
| TW106117512 | 2017-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108927280A CN108927280A (en) | 2018-12-04 |
| CN108927280B true CN108927280B (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710552254.8A Active CN108927280B (en) | 2017-05-26 | 2017-07-07 | Bottom slag washing and sorting system |
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| Country | Link |
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| CN (1) | CN108927280B (en) |
| TW (1) | TWI620600B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI734083B (en) * | 2019-03-07 | 2021-07-21 | 富鈞水資股份有限公司 | Sewage automatic allocation system and its allocation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4359789A (en) * | 1972-01-31 | 1982-11-23 | Monogram Industries, Inc. | Sewerless disposal system |
| CN104084415A (en) * | 2014-07-02 | 2014-10-08 | 天津壹鸣环境工程有限公司 | Technology for reducing waste incineration fly ash via water logging pretreatment |
| CN105772484A (en) * | 2016-03-23 | 2016-07-20 | 武汉纺织大学 | Urban domestic sludge incineration ash harmless treatment technology and phosphorus compound recycling method |
| CN105858952A (en) * | 2016-04-20 | 2016-08-17 | 余荣和 | Sewage pretreatment method |
| CN106045225A (en) * | 2016-07-29 | 2016-10-26 | 南京福昌环保有限公司 | Wastewater treatment technology for recycling acroleic acid and residual ester liquid |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4077718B2 (en) * | 2002-12-03 | 2008-04-23 | 新日鉄エンジニアリング株式会社 | Melt treatment facility in waste melting treatment |
| TW200938301A (en) * | 2008-03-11 | 2009-09-16 | Kobin Environmental Entpr Co Ltd | Water-washing process for incineration bottom residues |
| TW200951228A (en) * | 2008-06-02 | 2009-12-16 | Da Di Liang Environmental Prot Services Ltd | Water-washing treating method for slag |
| TW201116344A (en) * | 2009-11-06 | 2011-05-16 | Wei-Zhou Xie | System and method for processing incinerator bottom ash |
| WO2014056065A1 (en) * | 2012-10-12 | 2014-04-17 | Blue Sky Mines Ltd. | Methods of and systems for treating incinerated waste |
| JP6330210B2 (en) * | 2013-08-22 | 2018-05-30 | 三菱重工環境・化学エンジニアリング株式会社 | Wastewater treatment facility |
-
2017
- 2017-05-26 TW TW106117512A patent/TWI620600B/en active
- 2017-07-07 CN CN201710552254.8A patent/CN108927280B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4359789A (en) * | 1972-01-31 | 1982-11-23 | Monogram Industries, Inc. | Sewerless disposal system |
| CN104084415A (en) * | 2014-07-02 | 2014-10-08 | 天津壹鸣环境工程有限公司 | Technology for reducing waste incineration fly ash via water logging pretreatment |
| CN105772484A (en) * | 2016-03-23 | 2016-07-20 | 武汉纺织大学 | Urban domestic sludge incineration ash harmless treatment technology and phosphorus compound recycling method |
| CN105858952A (en) * | 2016-04-20 | 2016-08-17 | 余荣和 | Sewage pretreatment method |
| CN106045225A (en) * | 2016-07-29 | 2016-10-26 | 南京福昌环保有限公司 | Wastewater treatment technology for recycling acroleic acid and residual ester liquid |
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| Publication number | Publication date |
|---|---|
| TW201900280A (en) | 2019-01-01 |
| CN108927280A (en) | 2018-12-04 |
| TWI620600B (en) | 2018-04-11 |
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