CN104150602B - The sewage water treatment method that nitrogen phosphorus removes in right amount is carried out according to secondary effluent nitrogen content - Google Patents
The sewage water treatment method that nitrogen phosphorus removes in right amount is carried out according to secondary effluent nitrogen content Download PDFInfo
- Publication number
- CN104150602B CN104150602B CN201410417876.6A CN201410417876A CN104150602B CN 104150602 B CN104150602 B CN 104150602B CN 201410417876 A CN201410417876 A CN 201410417876A CN 104150602 B CN104150602 B CN 104150602B
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- phosphorus
- secondary effluent
- slag
- carry out
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The present invention relates to and a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, adopt the current wetland of artificial blending agent to carry out advanced treatment to secondary effluent, make the water outlet N/P of current wetland be 20 ~ 30; Wherein the different zones of the blending agent of current wetland contains zeolite and the slag of different ratio.Compared with prior art, the present invention utilizes slag efficient adsorption Removal, by being mixed in proportion with other media, reach the usefulness that water inlet phosphorus is quantitatively removed, realize wetland effluent nitrogen phosphorus optimized proportion, and then promote the nontoxic chlorella growth of receiving water body, suppress poisonous micro-algae propagation.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, especially relate to and a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, belong to field of environment engineering technology.
Background technology
Water outlet after current municipal effluent second-stage treatment is still containing considerable nitrogen, phosphorus, in main existence form major part for nitrate nitrogen, small portion be ammonia nitrogen, also has the phosphorus of ortho-phosphoric acid root, concentration level is substantially: nitrate nitrogen is 10-15mg/L, ammonia nitrogen is 3-5mg/L, total phosphorus is about 1-1.5mg/L, and then causes the chronic pollution of receiving water body.Water body can be caused to destroy and body eutrophication if be directly discharged into lake and river or water body reuse.
Artificial swamp is as typical eco-treatment technology, have that efficiency is high, less investment, energy consumption are low and safeguard simple feature, the requirement that low concentration pollutant is removed can be adapted to, using artificial wet land treating system supplementing as conventional biological treatment technique, the pollutant load of receiving water body can be cut down to greatest extent.Research shows, TP just can meet poisonous at low concentrations or cause the existence of algae of wawter bloom, water quality after artificial wetland treatment still can meet the growth of toxic algae, so control N/P value a kind ofly suppresses poisonous algae and promote the effective measure that nontoxic algae grows.Document is had to point out, when N, P concentration meets algal grown, time low N/P (5-15), poisonous algae (blue-green algae) well-grown, high N/P (50-150) also can promote the growth of poisonous algae (microcystic aeruginosa).Some useful algaes (protein pellet algae) have suitable claimed range (20-30) to N/P, the artificial swamp by constructing blending agent is considered in research, utilizes medium to have the removal of control to reach the N/P (20-30) of later stage needs to nitrogen, phosphorus.
Slag is the solid waste produced in steelmaking process, and quantity is about 15% ~ 20% of output of steel, and it contains the materials such as abundant free calcium oxide, colloidal iron oxide and aluminum oxide, possesses larger phosphorus loading capacity in theory.The 2008 Tieling Lake Lianhuahu slag artificial wet land water quality cleaning projects built up so far removal effect are good, and before Village Vanguard, Shanghai Chongming county, river is by the process of slag artificial swamp, and water ecosystem is greatly improved.
But current is all eliminate nitrogen phosphorus as much as possible or eliminate nitrogen phosphorus for sewage disposal simultaneously, its water outlet N/P is difficult to control, and the N/P follow-up water N/P of its water outlet has much relations, lacks the processing method accurately controlled water outlet N/P at present.
Summary of the invention
Object of the present invention is exactly provide a kind of to overcome the unmanageable defect of water outlet N/P that prior art exists to carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount.
Object of the present invention can be achieved through the following technical solutions:
A kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, the current wetland of artificial blending agent is adopted to carry out advanced treatment to secondary effluent, the water outlet N/P of current wetland is made to be 20 ~ 30, the water outlet N/P of current wetland is in one and is applicable to nontoxic chlorella growth, suppresses the scope of toxic algae; Wherein the different zones of the blending agent of current wetland contains zeolite and the slag of different ratio.
Treatment process comprises the following steps:
(1) measure the nitrogen content of secondary effluent, comprise ammonia nitrogen concentration and nitrate nitrogen concentration;
(2) test zeolite to the adsorption rate of certain density ammonia nitrogen and adsorption effect, slag, to the adsorption efficiency of phosphorus and adsorption effect, determines the average adsorption amount to nitrogen and phosphorus of zeolite and slag in for some time;
(3) according to the ammonia-nitrogen content of secondary effluent, total nitrogen content and total phosphorous and water outlet N/P, and according to current wetland to denitrification denitrogenation usefulness, draw water outlet ammonia nitrogen and the total phosphorus content of current wetland, calculate the ammonia nitrogen and phosphorus content removed;
(4) determine that current wetland is along journey denitrogenation, dephosphorization speed and denitrogenation, except phosphorus load, according to zeolite and slag respectively to the ammonia nitrogen of different concns and the dynamic adsorption capacity of phosphorus and adsorption rate, determine along Cheng Ge district zeolite and slag consumption;
(5) zeolite determined according to step (4) and slag consumption build the current wetland of artificial blending agent, and utilize this current wetland to carry out advanced treatment to secondary effluent.
Described secondary effluent is the secondary effluent of industrial sewage or municipal effluent, and its ammonia nitrogen concentration is 5-10mg/L, and nitrate nitrogen concentration is 10-15mg/L, and phosphorus concentration is 1-1.5mg/L.
The water outlet total nitrogen concentration of current wetland is at 10-15mg/L, and total phosphorus concentration is at 0.3-0.5mg/L.
The present invention is tending towards the conclusion (of pressure testing) of definite value according to the average adsorption speed of short period of time (4h) interior unit vol slag to low phosphorus, artificial swamp is divided into 3 regions along journey, according to certain dephosphorization task that each region is born, namely TP that each region is removed measures.Divided by the average adsorption speed of unit vol slag under each region phosphorous concentration levels, draw the slag consumption of proportioning needed for each region.
Described current wetland comprises treating pond, the front and back for the treatment of pond arrange water-in and water outlet respectively, treating pond inside is followed successively by wetland plant layer, pedosphere and packing medium layer from top to bottom, described packing medium floor is divided into pre-treatment district, intermediate treatment district and post processing zone by water (flow) direction, and pre-treatment district, intermediate treatment district and post processing zone contain zeolite and the slag of different ratio respectively.
Fill the haydites of book structure of stimulating organism film growth in pre-treatment district, intermediate treatment district and post processing zone respectively, make pre-treatment district, intermediate treatment district and post processing zone volume identical by shale pottery.
The hydraulic detention time of described treating pond is 12 ~ 24 hours.
The bottom slope of described packing medium layer is 1%.
The front of described treating pond is provided with buffer zone, and described water-in is located at buffer zone upper area, and described water outlet is located at the lower region of post processing zone.
Compared with prior art, the present invention has the following advantages and beneficial effect:
(1) the invention provides and a kind ofly carry out according to water inlet nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, can the N/P ratio of adjusting water outlet by the method, make water outlet can suppress poisonous micro-algae propagation, and can promote nontoxic chlorella growth, nontoxic green alga can be used as aquatic organism feed.
(2) for controlling water outlet N/P, along journey different ratio zeolite and slag, packing medium layer ensures that wetland completes certain for ammonia nitrogen and phosphorus task.Zeolite is tending towards a value to the adsorption rate of the ammonia nitrogen within the scope of finite concentration within a certain period of time, slag is also tending towards a value to the adsorption rate of the phosphorus within the scope of finite concentration within a certain period of time, different from the proportioning of post processing zone mesolite and slag by pre-treatment district, intermediate treatment district, and control suitable hydraulic detention time, make water outlet N/P obtain requirement.
(3) the inventive method realizes the object to the directed advanced treatment of waste water not up to standard after second-stage treatment, and method is convenient, and its water outlet total nitrogen concentration is at 10-15mg/L; Total phosphorus concentration at 0.3-0.5mg/L, N/P at 20-30, N/P at 20-30.Its water outlet is applicable to the growth of beneficial algae, is unfavorable for the growth of toxic algae, can be used as the former water of raising useful economic algae, has good economic worth.Therefore, process water water quality of the present invention is not only beneficial to the eutrophication from Sources controlling receiving water body, also has certain economic worth by ecological resources.After the present invention simultaneously processes further to the waste water after second-stage treatment, COD reduces further.
Accompanying drawing explanation
Fig. 1 is the current wetland structural representation of the inventive method when carrying out sewage disposal;
Fig. 2 is after secondary effluent enters current wetland, and slag removes speed indicator nomogram to TP.
Embodiment
A kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, the current wetland of artificial blending agent is adopted to carry out advanced treatment to secondary effluent, the water outlet N/P of current wetland is made to be 20 ~ 30, the water outlet N/P of current wetland is in one and is applicable to nontoxic chlorella growth, suppresses the scope of toxic algae; Wherein the different zones of the blending agent of current wetland contains zeolite and the slag of different ratio.
Treatment process comprises the following steps:
(1) measure the nitrogen content of secondary effluent, comprise ammonia nitrogen concentration and nitrate nitrogen concentration;
(2) test zeolite to the adsorption rate of certain density ammonia nitrogen and adsorption effect, slag, to the adsorption efficiency of phosphorus and adsorption effect, determines the average adsorption amount to nitrogen and phosphorus of zeolite and slag in for some time;
(3) according to the ammonia-nitrogen content of secondary effluent, total nitrogen content and total phosphorous and water outlet N/P, and according to current wetland to denitrification denitrogenation usefulness, draw water outlet ammonia nitrogen and the total phosphorus content of current wetland, calculate the ammonia nitrogen and phosphorus content removed;
(4) determine that current wetland is along journey denitrogenation, dephosphorization speed and denitrogenation, except phosphorus load, according to zeolite and slag respectively to the ammonia nitrogen of different concns and the dynamic adsorption capacity of phosphorus and adsorption rate, determine along Cheng Ge district zeolite and slag consumption;
(5) zeolite determined according to step (4) and slag consumption build the current wetland of artificial blending agent, and utilize this current wetland to carry out advanced treatment to secondary effluent.
Secondary effluent is the secondary effluent of industrial sewage or municipal effluent, and its ammonia nitrogen concentration is 5-10mg/L, and nitrate nitrogen concentration is 10-15mg/L, and phosphorus concentration is 1-1.5mg/L.
The water outlet total nitrogen concentration of current wetland is at 10-15mg/L, and total phosphorus concentration is at 0.3-0.5mg/L.
The present invention is tending towards the conclusion (of pressure testing) of definite value according to the average adsorption speed of short period of time (4h) interior unit vol slag to low phosphorus, artificial swamp is divided into 3 regions along journey, according to certain dephosphorization task that each region is born, namely TP that each region is removed measures.Divided by the average adsorption speed of unit vol slag under each region phosphorous concentration levels, draw the slag consumption of proportioning needed for each region.
Current wetland comprises treating pond, the front and back for the treatment of pond arrange water-in and water outlet respectively, treating pond inside is followed successively by wetland plant layer, pedosphere and packing medium layer from top to bottom, packing medium floor is divided into pre-treatment district, intermediate treatment district and post processing zone by water (flow) direction, and pre-treatment district, intermediate treatment district and post processing zone contain zeolite and the slag of different ratio respectively.
Fill the haydites of book structure of stimulating organism film growth in pre-treatment district, intermediate treatment district and post processing zone respectively, make pre-treatment district, intermediate treatment district and post processing zone volume identical by shale pottery.
The hydraulic detention time for the treatment of pond is 12 ~ 24 hours.
The bottom slope of packing medium layer is 1%.
The front for the treatment of pond is provided with buffer zone, and water-in is located at buffer zone upper area, and water outlet is located at the lower region of post processing zone.
After secondary effluent enters artificial swamp, TP is mainly through slag Adsorption; TN removes mainly through biological action and plant absorption.Because C/N in secondary effluent is than low, therefore in artificial swamp, denitrifying carbon source is not enough, and denitrification denitrogenation is generally only 20%-30% to TN clearance.For controlling water outlet N/P, to ensure that wetland completes certain dephosphorization task along journey different ratio slag.Following examples adopt slag to be Baosteel copper smelter slag.In embodiment, by measuring artificial swamp water inlet N, P content, TN clearance be 25% and control water outlet target N/P (20-30) condition under, calculate wetland want dephosphorization amount.
Phosphorus concentration is when 0-0.5mg/L, 0.5-1mg/L and 1-1.5mg/L, and in certain hour, the phosphorus adsorption rate of slag to these 3 concentration levels is tending towards 3 mean values respectively.City secondary effluent TP concentration is at 1-1.5mg/L.When secondary effluent TP concentration flow into artificial swamp with 1mg/L and 1.5mg/L respectively, TP concentration is different, in artificial swamp, slag is different to its adsorption rate, adsorptive capacity total in certain hour is different, and artificial wetland effluent TP concentration is the by-level of 1mg/L and 1.5mg/L situation between influent concentration.
Artificial swamp overburden layer is 0.1m, slag particle diameter 4-7mm, haydites of book structure particle diameter 8-10mm.As 1mg/L < TP concentration < 1.5mg/L, in 0-4h, the average adsorption speed of slag to phosphorus is tending towards definite value, is 1.8mg.Kg
-1/ h; As 0.5mg/L < TP concentration < 1mg/L, in 0-4h, it is 1.1mg.Kg that the average adsorption speed of slag to phosphorus is tending towards definite value
-1/ h; As TP concentration < 0.5mg/L, in 0-4h, it is 0.6mg.Kg that the average adsorption speed of slag to phosphorus is tending towards definite value
-1/ h.
Artificial swamp hydraulic load and hydraulic detention time are determined by the city secondary effluent water yield.
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
The present embodiment current wetland, as shown in Figure 1, comprise treating pond, the front and back for the treatment of pond arrange water-in 2 and water outlet 8 respectively, treating pond inside is followed successively by wetland plant layer 3, pedosphere 4 and packing medium layer from top to bottom, packing medium floor is divided into pre-treatment district 5, intermediate treatment district 6 and post processing zone 7 by water (flow) direction, and pre-treatment district 5, intermediate treatment district 6 and post processing zone 7 contain zeolite and the slag of different ratio respectively.The front for the treatment of pond is provided with buffer zone 1, and water-in 2 is located at buffer zone 1 upper area, and water outlet 8 is located at the lower region of post processing zone 7.
The working parameter of the present embodiment is as follows:
In parallel artificial swamp 18 × 4.5 × 1m10
Process water yield 400-500m
3/ d, wherein each artificial wetland treatment water yield 40-50m
3/ d.
Water inlet TP1-1.5mg/L, NO
3-N10-15mg/L, NH
4 +-N3-5mg/L, COD50-80mg/L.
Hydraulic detention time 12h, hydraulic load is 0.5-0.6m
3/ m
2d
Mixed fillers porosity is 35%
Water outlet TN is 10-15mg/L
It is 20-30 to the optimal proportions of N/P that artificial wetland effluent raises the useful fresh water algae such as chlorella, require city secondary effluent after artificial swamp water outlet TP concentration at 0.3-0.5mg/L.
Each artificial swamp is divided into 3 regions along journey, and every section of zone length is 6m, and every section of region hydraulic detention time is 4h.When TP concentration of intaking is 1.5mg/L, controlling pre-treatment district water outlet TP concentration in design is during this period of time 1mg/L, and corresponding slag is 1.8mg.Kg to TP average adsorption amount
-1/ h; Intermediate treatment district water outlet TP concentration is about 0.5mg/L, and now the average adsorption amount of slag to TP is 1.1mg.Kg
-1/ h; When current are behind post processing zone, can realize water outlet TP concentration at 0.3-0.5mg/L, in post processing zone, slag is 0.6mg.Kg to TP average adsorption amount
-1/ h.It is 0.6t that predesigne obtains single artificial swamp pre-treatment district slag amount, and the intermediate treatment district steely quantity of slag is 1t, and the post processing zone steely quantity of slag is 0.7t.When calculating water inlet TP concentration is 1.5mg/L with this understanding, now water outlet theory T P concentration is 0.45mg/L.When calculating water inlet TP concentration is 1mg/L with this understanding, water outlet theory T P concentration is 0.3mg/L.Design theory is as Fig. 2.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (8)
1. carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, adopt the current wetland of artificial blending agent to carry out advanced treatment to secondary effluent, make the water outlet N/P of current wetland be 20 ~ 30; Wherein the different zones of the blending agent of current wetland contains zeolite and the slag of different ratio;
Treatment process comprises the following steps:
(1) measure the nitrogen content of secondary effluent, comprise ammonia nitrogen concentration and nitrate nitrogen concentration;
(2) test zeolite to the adsorption rate of certain density ammonia nitrogen and adsorption effect, slag, to the adsorption efficiency of phosphorus and adsorption effect, determines the average adsorption amount to nitrogen and phosphorus of zeolite and slag in for some time;
(3) according to the ammonia-nitrogen content of secondary effluent, total nitrogen content and total phosphorous and water outlet N/P, and according to current wetland to denitrification denitrogenation usefulness, draw water outlet ammonia nitrogen and the total phosphorus content of current wetland, calculate the ammonia nitrogen and phosphorus content removed;
(4) determine that current wetland is along journey denitrogenation, dephosphorization speed and denitrogenation, except phosphorus load, according to zeolite and slag respectively to the ammonia nitrogen of different concns and the dynamic adsorption capacity of phosphorus and adsorption rate, determine along Cheng Ge district zeolite and slag consumption;
(5) zeolite determined according to step (4) and slag consumption build the current wetland of artificial blending agent, and utilize this current wetland to carry out advanced treatment to secondary effluent.
2. according to claim 1ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, described secondary effluent is the secondary effluent of industrial sewage or municipal effluent, its ammonia nitrogen concentration is 5-10mg/L, nitrate nitrogen concentration is 10-15mg/L, and phosphorus concentration is 1-1.5mg/L.
3. according to claim 2ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, the water outlet total nitrogen concentration of current wetland is at 10-15mg/L, and total phosphorus concentration is at 0.3-0.5mg/L.
4. according to claim 1ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, described current wetland comprises treating pond, the front and back for the treatment of pond arrange water-in and water outlet respectively, treating pond inside is followed successively by wetland plant layer, pedosphere and packing medium layer from top to bottom, described packing medium floor is divided into pre-treatment district, intermediate treatment district and post processing zone by water (flow) direction, and pre-treatment district, intermediate treatment district and post processing zone contain zeolite and the slag of different ratio respectively.
5. according to claim 4ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, fill the haydites of book structure of stimulating organism film growth in pre-treatment district, intermediate treatment district and post processing zone respectively, make pre-treatment district, intermediate treatment district and post processing zone volume identical by shale pottery.
6. according to claim 4ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, the hydraulic detention time of described treating pond is 12 ~ 24 hours.
7. according to claim 4ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, the bottom slope of described packing medium layer is 1%.
8. according to claim 4ly a kind ofly carry out according to secondary effluent nitrogen content the sewage water treatment method that nitrogen phosphorus removes in right amount, it is characterized in that, the front of described treating pond is provided with buffer zone, described water-in is located at buffer zone upper area, and described water outlet is located at the lower region of post processing zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417876.6A CN104150602B (en) | 2014-08-22 | 2014-08-22 | The sewage water treatment method that nitrogen phosphorus removes in right amount is carried out according to secondary effluent nitrogen content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417876.6A CN104150602B (en) | 2014-08-22 | 2014-08-22 | The sewage water treatment method that nitrogen phosphorus removes in right amount is carried out according to secondary effluent nitrogen content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104150602A CN104150602A (en) | 2014-11-19 |
| CN104150602B true CN104150602B (en) | 2016-04-13 |
Family
ID=51876272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410417876.6A Active CN104150602B (en) | 2014-08-22 | 2014-08-22 | The sewage water treatment method that nitrogen phosphorus removes in right amount is carried out according to secondary effluent nitrogen content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104150602B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445307A (en) * | 2017-09-30 | 2017-12-08 | 贵州大学 | Rural households' domestic sewage purification system |
| CN110846248A (en) * | 2019-11-19 | 2020-02-28 | 天津大学 | Artificial mixed bacteria system for degrading polycyclic aromatic hydrocarbon and application method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838053A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Method for constructing artificial wetland through aged refuse for processing sewage |
| CN101851023A (en) * | 2010-03-26 | 2010-10-06 | 北京神州瑞霖环保科技有限公司 | Underflow type constructed wetland system with coke powder-steel slag compound filler |
-
2014
- 2014-08-22 CN CN201410417876.6A patent/CN104150602B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838053A (en) * | 2009-03-20 | 2010-09-22 | 宝山钢铁股份有限公司 | Method for constructing artificial wetland through aged refuse for processing sewage |
| CN101851023A (en) * | 2010-03-26 | 2010-10-06 | 北京神州瑞霖环保科技有限公司 | Underflow type constructed wetland system with coke powder-steel slag compound filler |
Non-Patent Citations (1)
| Title |
|---|
| 生物-生态协同工艺深度处理城市污水;陈秀荣，等人;《哈尔滨工业大学学报》;20080430;第40卷(第4期);第650-655页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104150602A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103755043B (en) | The biological permeable reaction wall system that a kind of Acidic Waste Water from Coal Mines situ downhole is repaired | |
| CN102775019B (en) | Coupling type sewage de-phosphorization purification regeneration treatment technique | |
| CN105836881A (en) | Reclaimed water deep denitrification and dephosphorization method based on low C/N ratio | |
| CN103848542B (en) | Advanced wastewater treatment technology for sewage treatment and upgrading and reconstruction | |
| CN106430525B (en) | A kind of sewage treatment plant tail water deep denitrification method | |
| CN102775021B (en) | Method of advanced treatment of high concentration phosphorus sewage and recycling of phosphorus | |
| CN105923757A (en) | Method for phosphorus removal and denitrification through iron elementary substance cooperating with sulfur autotrophic denitrification | |
| CN104150602B (en) | The sewage water treatment method that nitrogen phosphorus removes in right amount is carried out according to secondary effluent nitrogen content | |
| CN102910781B (en) | Compound treatment system for nitrogen and phosphorus removal of municipal wastewater and treatment method of system | |
| CN104310641A (en) | Deep phosphorous removal method for low-phosphorous water | |
| CN204265559U (en) | A kind of low-phosphorous water depth dephosphorization equipment | |
| CN110252240B (en) | Method for preparing phosphorus-containing wastewater adsorbent by roasting aluminum-containing waste residue and application of phosphorus-containing wastewater adsorbent | |
| CN104528898A (en) | Recycling method of high-concentration wastewater resource containing nitrogen, phosphorus and sulphur | |
| CN102225822A (en) | Artificial reinforced ecological filter bed, and method for treating polluted river water through the artificial reinforced ecological filter bed | |
| JP6274426B2 (en) | Method and apparatus for denitrification of nitrate nitrogen | |
| CN104140161B (en) | The current wetland that a kind of water outlet N/P suitable non-toxic green alga is cultivated | |
| CN103172217A (en) | Large-scale livestock breeding sewage treatment method and equipment | |
| CN102161525A (en) | Dephosphorization method for wastewater by hydrolysis acidification | |
| JPH09206800A (en) | Treatment of water-area bottom mud | |
| CN102019169B (en) | Regeneration method of activated carbon in organosilicon wastewater treatment | |
| CN105502649B (en) | A kind of method alleviated anaerobic ammonium oxidation granular sludge and floated | |
| CN105217713B (en) | A kind of method for removing phosphorus in water removal with calcining siderite depth | |
| CN111072139B (en) | Preparation method of sulfur autotrophic denitrification biological brick and biological brick prepared by same | |
| CN107601634A (en) | A kind of Water body cleansing agent and preparation method thereof | |
| CN103523908A (en) | Synchronous high-efficiency biological phosphorus removing and reclaiming system and method based on activated sludge process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |