CN108314175A - A kind of organic additive for bio-filter stuffing - Google Patents
A kind of organic additive for bio-filter stuffing Download PDFInfo
- Publication number
- CN108314175A CN108314175A CN201810106398.5A CN201810106398A CN108314175A CN 108314175 A CN108314175 A CN 108314175A CN 201810106398 A CN201810106398 A CN 201810106398A CN 108314175 A CN108314175 A CN 108314175A
- Authority
- CN
- China
- Prior art keywords
- parts
- bio
- straw
- organic additive
- micro mist
- 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.)
- Pending
Links
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
-
- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Filtering Materials (AREA)
Abstract
A kind of organic additive for bio-filter stuffing is made of the raw material of following parts by weight：10 15 parts of volcanic rock, 10 15 parts of diatom ooze, 15 20 parts of animal bone, 10 15 parts of straw, 5 10 parts of freshwater mussel shell, 5 10 parts of modified ceramic micro mist, 46 parts of microcrystalline cellulose, 35 parts of activated carbon, 1.2 1.6 parts of nano-zinc borate, 13 parts of iron oxide, 0.5 0.8 parts of silver ion.The present invention is using volcanic rock, diatom ooze, animal bone as primary raw material, the organic additive for bio-filter stuffing is made in the raw materials such as cooperation straw, freshwater mussel shell, modified ceramic micro mist, activated carbon, Environmental Safety, it is green non-poisonous, it is added into bio-filter stuffing as additive, can effectively remove the pollutant in sewage, obvious processing effect, cost of sewage disposal is substantially reduced, to avoid the in line pollution on the environment of sewage.
Description
Technical field：
The present invention relates to aerating biological filter pool filler technical fields, and in particular to a kind of for the organic of bio-filter stuffing
Additive.
Background technology：
Biofilter is a kind of sewage disposal technology, is main processing with the biomembrane of granulated filler and its apposition growth
Medium gives full play to the physisorption of biological metabolism, biofiltration, biomembrane and filler particles, collects biological oxidation process
With separation of solid and liquid in one so that the removal of BOD, COD, the filtering of SS and nitrifying process can be in the same unitary reactors
It completes, and if increasing anaerobic zone in biological aerated filter, denitrification denitrogenation and dephosphorization can also be carried out at the same time.Filler is made
For the core component of biological aerated filter, there is direct influence to the effect of biological aerated filter.
Invention content：
Technical problem to be solved by the present invention lies in provide a kind of organic additive for bio-filter stuffing.
The technical problems to be solved by the invention are realized using technical solution below：
A kind of organic additive for bio-filter stuffing, it is characterised in that：It is made of the raw material of following parts by weight：
10-15 parts of volcanic rock, 10-15 parts of diatom ooze, 15-20 parts of animal bone, 10-15 parts of straw, 5-10 parts of freshwater mussel shell are modified
5-10 parts of ceramic, 4-6 parts of microcrystalline cellulose, 3-5 parts of activated carbon, 1.2-1.6 parts of nano-zinc borate, 1-3 parts of iron oxide, silver
0.5-0.8 parts of ion.
The animal bone is by Fishbone, pig bone, Os Bovis seu Bubali according to 8:4:2 weight part ratio composition.
The straw is by broomcorn straw, maize straw, cotton stalk, wheat shell according to 3:3:2:1 parts by weight
Number is than composition.
The modified ceramic micro mist is formed through phenolic resin modified by ceramic fibre, and method of modifying is：To ceramic fibre
Rosin and hexamethylolmelamine pregnancy ether are added in dimension, microwave treater microwave treatment 5min is utilized after being sufficiently mixed, then
Phenolic resin, nano-titanium dioxide and crospovidone is added, is uniformly mixed and continues microwave treatment 5min, and be transferred to 5-10 DEG C of ring
Sealing and standing 30min in border, again microwave treatment 5min, then cooled to room temperature, 5-10 DEG C of water water of gained mixture
It washes twice, is finally sent into freeze drier, it is micro- to get modified ceramic that through the broken machine of superfluorescent fiber fiber is made in dry obtained solid
Powder.
The ceramic fibre, rosin, hexamethylolmelamine pregnancy ether, phenolic resin, nano-titanium dioxide and crosslinking
The quality amount ratio of povidone is 10-15:0.5-1:0.3-0.5:3-5:1-3:0.5-1.
The operating condition of the microwave treater is microwave frequency 2250MHz, output power 800W.
Preparation method includes the following steps：
(1) animal bone, freshwater mussel shell, straw are cleaned up, is dried to water content and is less than 25%；
(2) animal bone, freshwater mussel shell, the straw after drying are carbonized；
(3) animal bone being carbonized, freshwater mussel shell, straw are ground, are mixed evenly, obtain material I
(4) by volcanic rock, diatom ooze, modified ceramic micro mist, microcrystalline cellulose, activated carbon, nano-zinc borate, iron oxide,
It is pulverized and mixed uniformly, is put into iron pan and carries out frying 20-30 minutes, do not stop to stir-fry, obtain material II；
(5) material II is added into material I, silver ion is added, in microwave frequency 2250MHz, output work after being sufficiently mixed
Microwave treatment 20-30min under rate 800W, and cooled to room temperature are finally made fineness using micronizer and are less than 30 μm
Micro mist.
The beneficial effects of the invention are as follows：The present invention coordinates plant using volcanic rock, diatom ooze, animal bone as primary raw material
The organic additive for bio-filter stuffing, environmental protection peace is made in the raw materials such as stalk, freshwater mussel shell, modified ceramic micro mist, activated carbon
Entirely, green non-poisonous, it is added into bio-filter stuffing as additive, can effectively remove the pollutant in sewage, treatment effect
Significantly, cost of sewage disposal is substantially reduced, to avoid the in line pollution on the environment of sewage.
Specific implementation mode：
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1
A kind of organic additive for bio-filter stuffing, it is characterised in that：It is made of the raw material of following parts by weight：
10 parts of volcanic rock, 10 parts of diatom ooze, 15 parts of animal bone, 10 parts of straw, 5 parts of freshwater mussel shell, 5 parts of modified ceramic micro mist are micro-
4 parts of crystalline cellulose, 3 parts of activated carbon, 1.2 parts of nano-zinc borate, 1 part of iron oxide, 0.5 part of silver ion.
The animal bone is by Fishbone, pig bone, Os Bovis seu Bubali according to 8:4:2 weight part ratio composition.
The straw is by broomcorn straw, maize straw, cotton stalk, wheat shell according to 3:3:2:1 parts by weight
Number is than composition.
The modified ceramic micro mist is formed through phenolic resin modified by ceramic fibre, and method of modifying is：To ceramic fibre
Rosin and hexamethylolmelamine pregnancy ether are added in dimension, microwave treater microwave treatment 5min is utilized after being sufficiently mixed, then
Phenolic resin, nano-titanium dioxide and crospovidone is added, is uniformly mixed and continues microwave treatment 5min, and be transferred to 5 DEG C of environment
Middle sealing and standing 30min, again microwave treatment 5min, then cooled to room temperature, gained mixture are washed with 5-10 DEG C of water
Twice, it is finally sent into freeze drier, fiber is made to get modified ceramic micro mist through the broken machine of superfluorescent fiber in dry obtained solid.
The ceramic fibre, rosin, hexamethylolmelamine pregnancy ether, phenolic resin, nano-titanium dioxide and crosslinking
The quality amount ratio of povidone is 10:0.5:0.3:3:1:0.5.
The operating condition of the microwave treater is microwave frequency 2250MHz, output power 800W.
Preparation method includes the following steps：
(1) animal bone, freshwater mussel shell, straw are cleaned up, is dried to water content and is less than 25%；
(2) animal bone, freshwater mussel shell, the straw after drying are carbonized；
(3) animal bone being carbonized, freshwater mussel shell, straw are ground, are mixed evenly, obtain material I
(4) by volcanic rock, diatom ooze, modified ceramic micro mist, microcrystalline cellulose, activated carbon, nano-zinc borate, iron oxide,
It is pulverized and mixed uniformly, is put into iron pan and carries out frying 20 minutes, do not stop to stir-fry, obtain material II；
(5) material II is added into material I, silver ion is added, in microwave frequency 2250MHz, output work after being sufficiently mixed
It is micro- less than 30 μm that fineness finally is made using micronizer in microwave treatment 20min under rate 800W, and cooled to room temperature
Powder.
Embodiment 2
A kind of organic additive for bio-filter stuffing, it is characterised in that：It is made of the raw material of following parts by weight：
15 parts of volcanic rock, 15 parts of diatom ooze, 20 parts of animal bone, 15 parts of straw, 10 parts of freshwater mussel shell, 10 parts of modified ceramic micro mist,
6 parts of microcrystalline cellulose, 5 parts of activated carbon, 1.6 parts of nano-zinc borate, 3 parts of iron oxide, 0.8 part of silver ion.
The animal bone is by Fishbone, pig bone, Os Bovis seu Bubali according to 8:4:2 weight part ratio composition.
The straw is by broomcorn straw, maize straw, cotton stalk, wheat shell according to 3:3:2:1 parts by weight
Number is than composition.
The modified ceramic micro mist is formed through phenolic resin modified by ceramic fibre, and method of modifying is：To ceramic fibre
Rosin and hexamethylolmelamine pregnancy ether are added in dimension, microwave treater microwave treatment 5min is utilized after being sufficiently mixed, then
Phenolic resin, nano-titanium dioxide and crospovidone is added, is uniformly mixed and continues microwave treatment 5min, and be transferred to 10 DEG C of environment
Middle sealing and standing 30min, again microwave treatment 5min, then cooled to room temperature, gained mixture wash two with 10 DEG C of water
It is secondary, it is finally sent into freeze drier, fiber is made to get modified ceramic micro mist through the broken machine of superfluorescent fiber in dry obtained solid.
The ceramic fibre, rosin, hexamethylolmelamine pregnancy ether, phenolic resin, nano-titanium dioxide and crosslinking
The quality amount ratio of povidone is 15:1:0.5:5:3:1.
The operating condition of the microwave treater is microwave frequency 2250MHz, output power 800W.
Preparation method includes the following steps：
(1) animal bone, freshwater mussel shell, straw are cleaned up, is dried to water content and is less than 25%；
(2) animal bone, freshwater mussel shell, the straw after drying are carbonized；
(3) animal bone being carbonized, freshwater mussel shell, straw are ground, are mixed evenly, obtain material I
(4) by volcanic rock, diatom ooze, modified ceramic micro mist, microcrystalline cellulose, activated carbon, nano-zinc borate, iron oxide,
It is pulverized and mixed uniformly, is put into iron pan and carries out frying 30 minutes, do not stop to stir-fry, obtain material II；
(5) material II is added into material I, silver ion is added, in microwave frequency 2250MHz, output work after being sufficiently mixed
It is micro- less than 30 μm that fineness finally is made using micronizer in microwave treatment 30min under rate 800W, and cooled to room temperature
Powder.
Embodiment 3
A kind of organic additive for bio-filter stuffing, it is characterised in that：It is made of the raw material of following parts by weight：
13 parts of volcanic rock, 13 parts of diatom ooze, 18 parts of animal bone, 13 parts of straw, 8 parts of freshwater mussel shell, 8 parts of modified ceramic micro mist are micro-
5 parts of crystalline cellulose, 4 parts of activated carbon, 1.4 parts of nano-zinc borate, 2 parts of iron oxide, 0.6 part of silver ion.
The animal bone is by Fishbone, pig bone, Os Bovis seu Bubali according to 8:4:2 weight part ratio composition.
The straw is by broomcorn straw, maize straw, cotton stalk, wheat shell according to 3:3:2:1 parts by weight
Number is than composition.
The modified ceramic micro mist is formed through phenolic resin modified by ceramic fibre, and method of modifying is：To ceramic fibre
Rosin and hexamethylolmelamine pregnancy ether are added in dimension, microwave treater microwave treatment 5min is utilized after being sufficiently mixed, then
Phenolic resin, nano-titanium dioxide and crospovidone is added, is uniformly mixed and continues microwave treatment 5min, and be transferred to 8 DEG C of environment
Middle sealing and standing 30min, again microwave treatment 5min, then cooled to room temperature, gained mixture wash two with 8 DEG C of water
It is secondary, it is finally sent into freeze drier, fiber is made to get modified ceramic micro mist through the broken machine of superfluorescent fiber in dry obtained solid.
The ceramic fibre, rosin, hexamethylolmelamine pregnancy ether, phenolic resin, nano-titanium dioxide and crosslinking
The quality amount ratio of povidone is 13:0.8:0.4:4:2:0.8.
The operating condition of the microwave treater is microwave frequency 2250MHz, output power 800W.
Preparation method includes the following steps：
(1) animal bone, freshwater mussel shell, straw are cleaned up, is dried to water content and is less than 25%；
(2) animal bone, freshwater mussel shell, the straw after drying are carbonized；
(3) animal bone being carbonized, freshwater mussel shell, straw are ground, are mixed evenly, obtain material I
(4) by volcanic rock, diatom ooze, modified ceramic micro mist, microcrystalline cellulose, activated carbon, nano-zinc borate, iron oxide,
It is pulverized and mixed uniformly, is put into iron pan and carries out frying 25 minutes, do not stop to stir-fry, obtain material II；
(5) material II is added into material I, silver ion is added, in microwave frequency 2250MHz, output work after being sufficiently mixed
It is micro- less than 30 μm that fineness finally is made using micronizer in microwave treatment 25min under rate 800W, and cooled to room temperature
Powder.
The made organic additive for bio-filter stuffing of table 1 is added in bio-filter stuffing to wastewater treatment efficiency
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| COD removal rates/% | 91 | 92.8 | 92 |
| BOD removal rates/% | 91.7 | 90.4 | 90 |
| Ammonia nitrogen removal frank/% | 89.6 | 91.3 | 90.6 |
| Coloration | Clarification | Clarification | Clarification |
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of organic additive for bio-filter stuffing, it is characterised in that：It is made of the raw material of following parts by weight：Fire
Rock 10-15 parts of mountain, 10-15 parts of diatom ooze, 15-20 parts of animal bone, 10-15 parts of straw, 5-10 parts of freshwater mussel shell, modified pottery
5-10 parts of porcelain micro mist, 4-6 parts of microcrystalline cellulose, 3-5 parts of activated carbon, 1.2-1.6 parts of nano-zinc borate, 1-3 parts of iron oxide, silver from
It is 0.5-0.8 parts sub-.
2. the organic additive according to claim 1 for bio-filter stuffing, which is characterized in that the animal bone
It is by Fishbone, pig bone, Os Bovis seu Bubali according to 8:4:2 weight part ratio composition.
3. the organic additive according to claim 2 for bio-filter stuffing, it is characterised in that：The straw
It is by broomcorn straw, maize straw, cotton stalk, wheat shell according to 3:3:2:1 weight part ratio composition.
4. the organic additive according to claim 2 for bio-filter stuffing, it is characterised in that：The modified ceramic
Micro mist is formed through phenolic resin modified by ceramic fibre, and method of modifying is：Rosin and six hydroxyl first are added into ceramic fibre
Base melamine pregnancy ether utilizes microwave treater microwave treatment 5min, adds phenolic resin, nano-silica after being sufficiently mixed
Change titanium and crospovidone, is uniformly mixed and continues microwave treatment 5min, and be transferred to sealing and standing 30min in 5-10 DEG C of environment, then
Secondary microwave treatment 5min, then cooled to room temperature, gained mixture twice, it is dry to be finally sent into freezing with 5-10 DEG C of water washing
In dry machine, fiber is made to get modified ceramic micro mist through the broken machine of superfluorescent fiber in dry obtained solid.
5. the organic additive according to claim 4 for bio-filter stuffing, it is characterised in that：The ceramics are fine
The quality amount ratio of dimension, rosin, hexamethylolmelamine pregnancy ether, phenolic resin, nano-titanium dioxide and crospovidone
For 10-15:0.5-1:0.3-0.5:3-5:1-3:0.5-1.
6. the organic additive according to claim 4 for bio-filter stuffing, it is characterised in that：The microwave treatment
The operating condition of device is microwave frequency 2250MHz, output power 800W.
7. the organic additive according to claim 1 for bio-filter stuffing, it is characterised in that：Preparation method packet
Include following steps：
(1) preparation method includes the following steps：
(2) animal bone, freshwater mussel shell, straw are cleaned up, is dried to water content and is less than 25%；
(3) animal bone, freshwater mussel shell, the straw after drying are carbonized；
(4) animal bone being carbonized, freshwater mussel shell, straw are ground, are mixed evenly, obtain material I
(5) it by volcanic rock, diatom ooze, modified ceramic micro mist, microcrystalline cellulose, activated carbon, nano-zinc borate, iron oxide, crushes
It is uniformly mixed, is put into iron pan and carries out frying 20-30 minutes, do not stop to stir-fry, obtain material II；
(6) material II is added into material I, silver ion is added, in microwave frequency 2250MHz, output power after being sufficiently mixed
Microwave treatment 20-30min under 800W, and cooled to room temperature are finally made fineness using micronizer and are less than 30 μm
Micro mist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106398.5A CN108314175A (en) | 2018-02-02 | 2018-02-02 | A kind of organic additive for bio-filter stuffing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106398.5A CN108314175A (en) | 2018-02-02 | 2018-02-02 | A kind of organic additive for bio-filter stuffing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108314175A true CN108314175A (en) | 2018-07-24 |
Family
ID=62901749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810106398.5A Pending CN108314175A (en) | 2018-02-02 | 2018-02-02 | A kind of organic additive for bio-filter stuffing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108314175A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955845A (en) * | 2021-11-27 | 2022-01-21 | 重庆大学 | Combined filler and sewage treatment method |
| CN117534217A (en) * | 2023-12-07 | 2024-02-09 | 知和环保科技有限公司 | Water body restoration method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428778A (en) * | 2011-09-20 | 2012-05-02 | 王丹妮 | Method for killing soil bacteria and insects and improving soil and special device for killing bacteria and insects |
| CN106867341A (en) * | 2017-03-06 | 2017-06-20 | 南平博士达节能科技有限公司 | A kind of construction wall insulation water-thinned nanometer paint |
| CN107055759A (en) * | 2017-01-23 | 2017-08-18 | 和县伊迈炭业有限责任公司 | Aerating biological filter pool filler processing aggregate prepared by a kind of utilization volcanic ash |
| CN107117695A (en) * | 2017-05-19 | 2017-09-01 | 合肥龙图腾信息技术有限公司 | It is a kind of for environmentally friendly medicament of Industrial Waste Water Treatments and preparation method thereof |
-
2018
- 2018-02-02 CN CN201810106398.5A patent/CN108314175A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428778A (en) * | 2011-09-20 | 2012-05-02 | 王丹妮 | Method for killing soil bacteria and insects and improving soil and special device for killing bacteria and insects |
| CN107055759A (en) * | 2017-01-23 | 2017-08-18 | 和县伊迈炭业有限责任公司 | Aerating biological filter pool filler processing aggregate prepared by a kind of utilization volcanic ash |
| CN106867341A (en) * | 2017-03-06 | 2017-06-20 | 南平博士达节能科技有限公司 | A kind of construction wall insulation water-thinned nanometer paint |
| CN107117695A (en) * | 2017-05-19 | 2017-09-01 | 合肥龙图腾信息技术有限公司 | It is a kind of for environmentally friendly medicament of Industrial Waste Water Treatments and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王昊等编著: "《潜流型人工湿地深度处理污水厂二级出水的研究》", 31 December 2017, 哈尔滨工程大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955845A (en) * | 2021-11-27 | 2022-01-21 | 重庆大学 | Combined filler and sewage treatment method |
| CN117534217A (en) * | 2023-12-07 | 2024-02-09 | 知和环保科技有限公司 | Water body restoration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101306849B (en) | Modification process of fly ash zeolite and wastewater treatment process for paper making | |
| CN108314175A (en) | A kind of organic additive for bio-filter stuffing | |
| CN113142015B (en) | Method for preparing organic nutrient soil from natural sandstone pulp washing sludge | |
| CN107892395A (en) | A kind of special sewage-treating agent of trade effluent and preparation method thereof | |
| CN105906169A (en) | Biological preparation for treating sodium glutamate fermentation sewage | |
| CN105923921B (en) | The treatment process of gourmet powder fermenting waste water | |
| CN111620744A (en) | Antibiotic bacterial residue microbial fertilizer and preparation method thereof | |
| CN108298672A (en) | A kind of bio-filter stuffing | |
| CN108033496B (en) | Farmland water fertilizing and purifying auxiliary agent with sludge as matrix | |
| CN108212070A (en) | A kind of organic-biological filter tank filler | |
| CN109650641A (en) | A kind of environment-protective process that Threonine Fermentation industrial wastewater is effectively treated | |
| CN113214007A (en) | Synergist for improving forest planting soil and preparation and application thereof | |
| CN106830294A (en) | A kind of method that utilization mushroom bran prepares bio-filter stuffing pore creating material | |
| CN106807331A (en) | The preparation of the composite filtering material of natural organic matter in removal drinking water | |
| CN106192532A (en) | A kind of sludge modification and reuse method | |
| CN106830286A (en) | A kind of method that utilization furfural dregs prepare bio-filter stuffing pore creating material | |
| CN108249549A (en) | A kind of bio-filter stuffing for industrial wastewater pretreatment | |
| CN115176668B (en) | Regenerated material of plant source waste as well as preparation method and application thereof | |
| CN110575820A (en) | preparation method of agricultural and forestry waste adsorbing material for printing and dyeing wastewater treatment | |
| CN108083428A (en) | A kind of biologic packing material for sanitary sewage pretreatment | |
| CN117486439B (en) | Papermaking wastewater treatment method with low sludge yield | |
| CN102863064A (en) | Method for preparing novel coagulant for sewage treatment | |
| CN109293006A (en) | A kind of water purification agent and preparation method thereof adding biological enzyme | |
| CN108529762A (en) | A kind of sewage treating material and preparation method thereof | |
| CN113016634B (en) | Method for preparing urethra-protecting cat litter by utilizing mixed fermentation of probiotics |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180724 |