CN106621561A - Sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage - Google Patents
Sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage Download PDFInfo
- Publication number
- CN106621561A CN106621561A CN201610954430.6A CN201610954430A CN106621561A CN 106621561 A CN106621561 A CN 106621561A CN 201610954430 A CN201610954430 A CN 201610954430A CN 106621561 A CN106621561 A CN 106621561A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- phosphorus
- synchronous
- sewage
- phosphorus adsorbent
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/10—Filter screens essentially made of metal
- B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Textile Engineering (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage. A body of the sewage filter screen is a steel filter screen, and the steel filter screen is filled with a synchronous nitrogen and phosphorus adsorbent in the production process. A preparation method of the synchronous nitrogen and phosphorus adsorbent comprises the steps that dolomite and attapulgite clay is mechanically smashed and screened into powdery particles, the mass content of the attapulgite in the attapulgite clay is 30-50%, and the mass content of the dolomite is 10-30%; ion exchange treatment is performed in a sodium salt and magnesium salt mixed water solution, then the product obtained after treatment is heated and modified, the heating and modifying temperature is 800-1000 DEG C, and the heating and modifying time is 0.5-2 hours; the synchronous nitrogen and phosphorus adsorbent is prepared. The body of the sewage filter screen for adsorbing the nitrogen and phosphorus elements in sewage is the steel filter screen, and the steel filter screen is filled with the synchronous nitrogen and phosphorus adsorbent in the production process.
Description
Technical field
The present invention relates to a kind of screen pack, more particularly to a kind of sewage filter net for nitrogen P elements in absorption effluent.
Background technology
With China's industrial progress and social development, water pollution is also on the rise, into a difficult problem for environmental improvement.According to ring
Border department monitors, and the daily at least 100,000,000 tons sewage in national cities and towns are unprocessed to be directly discharged into water body.Half in national seven big water systems
Above section water quality is contaminated, and the water body in the whole nation 1/3 is unsuitable for Fish Survival, and 1/4 water body is unsuitable for irrigating, 90% city
City's water pollution is serious, and 50% cities and towns water source does not meet drinking water standard.With economic continuous development, these statistics
Also continuing to increase.
Water pollution is mainly caused by the pollutant of mankind's activity generation, and it includes industrial pollution source, agricultural pollution source
With domestic pollution source three parts.Industrial wastewater is the important pollution sources in waters, with big, the wide, complicated component of amount, toxicity
Greatly, be difficult purification, it is difficult the features such as.Agricultural pollution source includes excrement of animals, agricultural chemicals, chemical fertilizer etc..China is water and soil in the world
One of country of most serious is lost in, about 5,000,000,000 tons of annual ground surface soil number of dropouts causes a large amount of agricultural chemicals, chemical fertilizer to flow into ground surface soil
River, river, lake, storehouse, the nitrogen being lost in therewith, phosphorus, potassium nutrition element, the lake for making 2/3 is subject to different degrees of eutrophication pollution
Harm, causes algae and other biological distorted proliferation, causes the change of water transparency and dissolved oxygen, so as to cause water quality to be disliked
Change.Domestic pollution source is mainly the various detergent used in urban life and sewage, rubbish, excrement etc., mostly nontoxic nothing
Machine salt, many containing nitrogen phosphate and sulfur in sanitary sewage, malignant bacteria is more.
Nitrogen and phosphorus, as inorganic nutrient substance, are the main matters for causing water pollution and eutrophication.Therefore, effectively go
Except nitrogen and phosphorus in sewage, to protecting water environment significant.That what is reported both at home and abroad at present denitrogenates phosphorus method mainly having
Method, the precipitation method, biochemical process and absorption method.In these methods, the features such as adsorption technology is because having convenient and swift, efficient, more
Come the concerns for causing people more.The core of adsorption technology is to select suitable sorbing material.Activated carbon is at the most frequently used water
Reason adsorbent, but its is expensive, separates difficult, regeneration condition harshness, and adsorption effect is undesirable.In recent years, using molecule
Sieve or cheap clay carry out adsorption treatment and also have been reported that to Nitrogen-and Phosphorus-containing waste water, but adsorption time is long, and adsorption capacity is low.
Organo-mineral complexing adsorbent is developing direction new in recent years, due to having hydrophilic functional in compound adsorbent
Group, there is capability of fast response and high adsorbance to pollutant.Clay class material is introduced in compound adsorbent, can further be dropped
Low product cost.Therefore, using dispersin polymerization technology, the appropriately crosslinked process of Jing is obtained granular attapulgite clay base and answers
Close adsorbent.Such adsorbent has higher adsorption capacity and faster absorption/desorption rate to nitrogen phosphorus, undoubtedly in high nitrogen phosphorus
Have broad application prospects in water body.
The content of the invention
The invention aims to shortcoming present in prior art is solved, and the one kind for proposing is used in absorption effluent
The sewage filter net of nitrogen P elements.
To achieve these goals, present invention employs following technical scheme：
A kind of sewage filter net for nitrogen P elements in absorption effluent, its main body be steel screen pack, the steel screen pack
Synchronous nitrogen and phosphorus adsorbent is filled with process of production, and the preparation method of the synchronous nitrogen and phosphorus adsorbent is：
S1, by dolomite attapulgite clay mechanical crushing, be screened into powder particle, concave convex rod quality contains in the attapulgite clay
Measure as 30-50%, dolomite mass content is 10-30%；
S2, it is placed in sodium salt and magnesium salts mixed aqueous solution and carries out ion-exchange treatment, then product heats after process are modified, heats
Modified temperature is 800 DEG C -1000 DEG C, and the heat modification time is 0.5-2 hours；
S3, prepared synchronous nitrogen and phosphorus adsorbent.
In the preparation process of the synchronous nitrogen and phosphorus adsorbent, dolomite concave convex rod mechanical crushing, sieve after, powder particle grain
Footpath is less than 100 mesh.
In the preparation process of the synchronous nitrogen and phosphorus adsorbent, sodium salt is NaCl and MgCl with magnesium salts mixed aqueous solution2It is mixed
Heshui solution, wherein NaCl and MgCl2Mol ratio be 2：1.
In the preparation process of the synchronous nitrogen and phosphorus adsorbent, the time of dolomite concave convex rod ion-exchange treatment is at least 4
Hour.
The synchronous nitrogen and phosphorus adsorbent is applied to nitrogen and phosphorus in synchronous Adsorption polluted-water, in polluted-water simultaneously
It is the nitrogen of 1-100mg/L and the phosphorus of 0.1-100mg/L containing concentration.
The synchronous nitrogen and phosphorus adsorbent is applied to nitrogen and phosphorus in synchronous Adsorption polluted bed mud, in control polluted bed mud
Nitrogen phosphorus release.
Compared with prior art, the invention has the beneficial effects as follows：For the sewage filter net of nitrogen P elements in absorption effluent,
Its main body is steel screen pack, and steel screen pack is filled with process of production synchronous nitrogen and phosphorus adsorbent, synchronous nitrogen and phosphorus adsorbent
Natural dolomite concave convex rod is adopted for raw material, first by NaCl and MgCl2Mixed solution carry out ion-exchange treatment so as to
With larger cation exchange capacity (CEC), then by products therefrom in high temperature heat modification, by the inertia in dolomite concave convex rod
Calcium activation is calcium oxide, so as to strengthen its adsorption capacity to nitrogen, makes it have higher fixed capacity and absorption effect to phosphorus again
Rate.Synchronous nitrogen and phosphorus adsorbent comprehensive inorganic salt and high-temperature heat treatment in the present invention, is modified to dolomite concave convex rod, except
Promote outside phosphorus adsorption capacity, also to greatly improve adsorption capacity and removal efficiency of the dolomite concave convex rod to nitrogen；And adopt sodium
Salt carries out ion-exchange treatment with the mixed solution of magnesium salts, for the raising of the N2 adsorption ability of dolomite concave convex rod has significantly
Synergistic function.Synchronous nitrogen and phosphorus phosphorus adsorbent in the present invention can not only efficiently, quickly remove life and trade effluent,
Nitrogen and phosphorus in eutrophication water, but also nitrogen phosphorus in lake, wetland, river course in polluted bed mud can be efficiently controlled
Release, effectively cuts down and controls water body eutrophication degree.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the invention, rather than the embodiment of whole.
A kind of sewage filter net for nitrogen P elements in absorption effluent, its main body be steel screen pack, the steel mistake
Filter screen is filled with process of production synchronous nitrogen and phosphorus adsorbent, and the preparation method of the synchronous nitrogen and phosphorus adsorbent is：
S1, by dolomite attapulgite clay mechanical crushing, be screened into powder particle, concave convex rod quality contains in the attapulgite clay
Measure as 30-50%, dolomite mass content is 10-30%；
S2, it is placed in sodium salt and magnesium salts mixed aqueous solution and carries out ion-exchange treatment, then product heats after process are modified, heats
Modified temperature is 800 DEG C -1000 DEG C, and the heat modification time is 0.5-2 hours；
S3, prepared synchronous nitrogen and phosphorus adsorbent.
In the preparation process of the synchronous nitrogen and phosphorus adsorbent, dolomite concave convex rod mechanical crushing, sieve after, powder particle grain
Footpath is less than 100 mesh.
In the preparation process of the synchronous nitrogen and phosphorus adsorbent, sodium salt is NaCl and MgCl with magnesium salts mixed aqueous solution2It is mixed
Heshui solution, wherein NaCl and MgCl2Mol ratio be 2：1.
In the preparation process of the synchronous nitrogen and phosphorus adsorbent, the time of dolomite concave convex rod ion-exchange treatment is at least 4
Hour.
The synchronous nitrogen and phosphorus adsorbent is applied to nitrogen and phosphorus in synchronous Adsorption polluted-water, in polluted-water simultaneously
It is the nitrogen of 1-100mg/L and the phosphorus of 0.1-100mg/L containing concentration.
The synchronous nitrogen and phosphorus adsorbent is applied to nitrogen and phosphorus in synchronous Adsorption polluted bed mud, in control polluted bed mud
Nitrogen phosphorus release.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (6)
1. a kind of sewage filter net for nitrogen P elements in absorption effluent, its main body is steel screen pack, and the steel is filtered
Net is filled with process of production synchronous nitrogen and phosphorus adsorbent, it is characterised in that the preparation method of the synchronous nitrogen and phosphorus adsorbent is：
S1, by dolomite attapulgite clay mechanical crushing, be screened into powder particle, concave convex rod quality contains in the attapulgite clay
Measure as 30-50%, dolomite mass content is 10-30%；
S2, it is placed in sodium salt and magnesium salts mixed aqueous solution and carries out ion-exchange treatment, then product heats after process are modified, heats
Modified temperature is 800 DEG C -1000 DEG C, and the heat modification time is 0.5-2 hours；
S3, prepared synchronous nitrogen and phosphorus adsorbent.
2. a kind of sewage filter net for nitrogen P elements in absorption effluent according to claim 1, it is characterised in that institute
In stating the preparation process of synchronous nitrogen and phosphorus adsorbent, dolomite concave convex rod mechanical crushing, sieve after, powder particle particle diameter be less than 100
Mesh.
3. a kind of sewage filter net for nitrogen P elements in absorption effluent according to claim 1, it is characterised in that institute
In stating the preparation process of synchronous nitrogen and phosphorus adsorbent, sodium salt is NaCl and MgCl with magnesium salts mixed aqueous solution2Mixed aqueous solution, its
Middle NaCl and MgCl2Mol ratio be 2：1.
4. a kind of sewage filter net for nitrogen P elements in absorption effluent according to claim 1, it is characterised in that institute
In stating the preparation process of synchronous nitrogen and phosphorus adsorbent, the time of dolomite concave convex rod ion-exchange treatment is at least 4 hours.
5. a kind of sewage filter net for nitrogen P elements in absorption effluent according to claim 1, it is characterised in that institute
Nitrogen and phosphorus that synchronous nitrogen and phosphorus adsorbent is applied in synchronous Adsorption polluted-water are stated, containing concentration is simultaneously in polluted-water
The nitrogen of 1-100mg/L and the phosphorus of 0.1-100mg/L.
6. a kind of sewage filter net for nitrogen P elements in absorption effluent according to claim 1, it is characterised in that institute
Nitrogen and phosphorus that synchronous nitrogen and phosphorus adsorbent is applied in synchronous Adsorption polluted bed mud are stated, the nitrogen phosphorus controlled in polluted bed mud is released
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610954430.6A CN106621561A (en) | 2016-11-03 | 2016-11-03 | Sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610954430.6A CN106621561A (en) | 2016-11-03 | 2016-11-03 | Sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106621561A true CN106621561A (en) | 2017-05-10 |
Family
ID=58821415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610954430.6A Withdrawn CN106621561A (en) | 2016-11-03 | 2016-11-03 | Sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106621561A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642203A (en) * | 2017-10-31 | 2018-01-30 | 山东毅康科技股份有限公司 | It is a kind of that there is self-cleaning, the Green Roof structure of dephosphorization ability |
| CN108404518A (en) * | 2018-04-23 | 2018-08-17 | 苏州清荷坊环保科技有限公司 | A kind of industrial wastewater filter screen |
| CN115196771A (en) * | 2022-07-18 | 2022-10-18 | 上海江柘环境工程技术有限公司 | Agricultural non-point source pollution treatment system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392626Y (en) * | 1999-10-10 | 2000-08-23 | 季克章 | Mould for casting metal ball |
| CN1435382A (en) * | 2002-01-30 | 2003-08-13 | 唐文浩 | A filter material for advanced sewage treatment |
| JP2004181354A (en) * | 2002-12-03 | 2004-07-02 | Toyobo Co Ltd | Flame-retardant filter medium |
| CN101306343A (en) * | 2007-11-14 | 2008-11-19 | 中国科学院南京土壤研究所 | Method for preparing water body phosphorus removal granular adsorbent by using attapulgite clay |
| CN102219233A (en) * | 2010-10-19 | 2011-10-19 | 华北电力大学 | Method for removing nitrogen and phosphorus in sewage by zeolite synthesized by coal ash |
| CN103145210A (en) * | 2013-03-25 | 2013-06-12 | 苏州绿世界园林发展有限公司 | Environment-friendly sewage nitrogen and phosphorus removal cleaning agent and preparation method thereof |
| CN103223327A (en) * | 2013-05-13 | 2013-07-31 | 中国科学院南京地理与湖泊研究所 | Preparation method and applications of synchronous nitrogen and phosphorus absorption agent |
| CN103846009A (en) * | 2012-11-29 | 2014-06-11 | 大连凯泓科技有限公司 | Filter net used for sewage treatment |
-
2016
- 2016-11-03 CN CN201610954430.6A patent/CN106621561A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392626Y (en) * | 1999-10-10 | 2000-08-23 | 季克章 | Mould for casting metal ball |
| CN1435382A (en) * | 2002-01-30 | 2003-08-13 | 唐文浩 | A filter material for advanced sewage treatment |
| JP2004181354A (en) * | 2002-12-03 | 2004-07-02 | Toyobo Co Ltd | Flame-retardant filter medium |
| CN101306343A (en) * | 2007-11-14 | 2008-11-19 | 中国科学院南京土壤研究所 | Method for preparing water body phosphorus removal granular adsorbent by using attapulgite clay |
| CN102219233A (en) * | 2010-10-19 | 2011-10-19 | 华北电力大学 | Method for removing nitrogen and phosphorus in sewage by zeolite synthesized by coal ash |
| CN103846009A (en) * | 2012-11-29 | 2014-06-11 | 大连凯泓科技有限公司 | Filter net used for sewage treatment |
| CN103145210A (en) * | 2013-03-25 | 2013-06-12 | 苏州绿世界园林发展有限公司 | Environment-friendly sewage nitrogen and phosphorus removal cleaning agent and preparation method thereof |
| CN103223327A (en) * | 2013-05-13 | 2013-07-31 | 中国科学院南京地理与湖泊研究所 | Preparation method and applications of synchronous nitrogen and phosphorus absorption agent |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642203A (en) * | 2017-10-31 | 2018-01-30 | 山东毅康科技股份有限公司 | It is a kind of that there is self-cleaning, the Green Roof structure of dephosphorization ability |
| CN108404518A (en) * | 2018-04-23 | 2018-08-17 | 苏州清荷坊环保科技有限公司 | A kind of industrial wastewater filter screen |
| CN115196771A (en) * | 2022-07-18 | 2022-10-18 | 上海江柘环境工程技术有限公司 | Agricultural non-point source pollution treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Comprehensive evaluation of substrate materials for contaminants removal in constructed wetlands | |
| Singh et al. | Low-cost adsorbents for removal of inorganic impurities from wastewater | |
| Kallo | Applications of natural zeolites in water and wastewater treatment | |
| Li et al. | Phosphate adsorption on metal oxides and metal hydroxides: A comparative review | |
| Cui et al. | Removal of nitrate and phosphate by chitosan composited beads derived from crude oil refinery waste: Sorption and cost-benefit analysis | |
| Yang et al. | Dewatered alum sludge: a potential adsorbent for phosphorus removal | |
| Bruch et al. | Improving the treatment efficiency of constructed wetlands with zeolite-containing filter sands | |
| Golestanifar et al. | Isotherm and kinetic studies on the adsorption of nitrate onto nanoalumina and iron-modified pumice | |
| CN109317091B (en) | Modified sepiolite heavy metal adsorption material and preparation method thereof | |
| Zhang et al. | Removal of Cd (II) by modified maifanite coated with Mg-layered double hydroxides in constructed rapid infiltration systems | |
| CN111298770B (en) | A method for simultaneously purifying organic arsenic and inorganic arsenic composite polluted wastewater | |
| Mittal et al. | Permeable reactive barrier technology for the remediation of groundwater contaminated with nitrate and phosphate resulted from pit-toilet leachate | |
| Kaleta et al. | The use of activated carbons for removing organic matter from groundwater | |
| Soumya et al. | Removal of phosphate and nitrate from aqueous solution using seagrass Cymodocea rotundata beads | |
| CN113307380B (en) | Mixed culture denitrification method for groundwater zero-valent iron-modified biochar composite filler column and permeable reaction wall | |
| Kamarzamann et al. | Hydroxyapatite/Dolomite alkaline activated material reaction in the formation of low temperature sintered ceramic as adsorbent materials | |
| Tian et al. | Remediation of aquaculture water in the estuarine wetlands using coal cinder-zeolite balls/reed wetland combination strategy | |
| CN103663582B (en) | Nutrient slow-release type drinking water purifier and preparation method | |
| CN106621561A (en) | Sewage filter screen for adsorbing nitrogen and phosphorus elements in sewage | |
| CN102963983A (en) | Vertical flow artificial wetland substrate modified based on LDHs (layered double hydroxides) coating film and preparation method of substrate | |
| CN110407334B (en) | Preparation and application of synchronous denitrification biological filler for adsorbing nitrate ions | |
| CN105858787B (en) | A kind of dephosphorization filler X-Phos matrix and preparation method thereof | |
| CN109095728B (en) | A rainwater runoff purification device and purification method | |
| CN106540491A (en) | A kind of sewage filter net for adsorbing gas soluble in water | |
| CN110395784A (en) | A kind of sludge and red soil mixed to prepare new biochar and its preparation method and application |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170510 |
|
| WW01 | Invention patent application withdrawn after publication |