CN101767900A - Reclaimed water recycling process - Google Patents
Reclaimed water recycling process Download PDFInfo
- Publication number
- CN101767900A CN101767900A CN200810208139A CN200810208139A CN101767900A CN 101767900 A CN101767900 A CN 101767900A CN 200810208139 A CN200810208139 A CN 200810208139A CN 200810208139 A CN200810208139 A CN 200810208139A CN 101767900 A CN101767900 A CN 101767900A
- Authority
- CN
- China
- Prior art keywords
- water
- oxidation pond
- contact oxidation
- recovering process
- cod
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004064 recycling Methods 0.000 title abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010865 sewage Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 13
- 239000004571 lime Substances 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 125000001477 organic nitrogen group Chemical group 0.000 claims abstract description 5
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000010452 phosphate Substances 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 29
- 230000003647 oxidation Effects 0.000 claims description 26
- 238000007254 oxidation reaction Methods 0.000 claims description 26
- 238000001556 precipitation Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 7
- 239000003206 sterilizing agent Substances 0.000 claims description 4
- 239000003403 water pollutant Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 150000003017 phosphorus Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to a reclaimed water recycling process, which comprises a step of removing phosphorus and a step of removing COD. In the step of removing phosphorus, lime is added into reclaimed water to utilize lime to react with phosphate to deposit. In the step of removing COD, a biological filter material is utilized to decompose organic substances in the reclaimed water, remove the COD in the water, convert nitrogen into nitrate nitrogen from organic nitrogen and then carry out filtering and sterilization. After being processed by the method of the invention, the domestic sewage can reach the primary standard in the city comprehensive discharge standards, can be recycled as the reclaimed water and fulfills the aim of saving energy and reducing emission.
Description
Technical field:
The present invention relates to water technology, relate in particular to sewage water treatment method, particularly a kind of middle water recovering process.
Background technology:
Waste water, waste gas enter river, river, lake, sea, the severe contamination water body.Wherein many hotels, restaurant and travelling scenery district, holiday village generally all have sewage treatment facility, and the water quality standard of water outlet can reach the standard of second-stage treatment.But reach the waste water of secondary discharge standard, can not reuse, also need to carry out advanced treatment.In the prior art, the advanced treatment of wastewater occupation area of equipment is big, investment is many.Construction period is long, fluctuation of service.
Summary of the invention:
The object of the present invention is to provide a kind of in water recovering process, described this in water recovering process to solve in the prior art that the advanced treatment of wastewater occupation area of equipment is big, investment is many, the construction period is long, the technical problem of fluctuation of service.
A kind of middle water recovering process of the present invention, the process that comprises water pollutant in the removal, wherein, comprise a step and a step of removing COD of removing phosphorus in the described removal in the process of water pollutant, in the step of described removal phosphorus, add lime among the Xiang Zhongshui, utilize lime and phosphate reaction precipitation, in the step of removing COD, utilize biofilter material, the organic substance in the centering water decomposes, and removes the COD in the water, nitrogen is converted into nitric nitrogen from organic nitrogen, filters then, sterilize.
Further, in the step of removing phosphorus, middle water is imported in the agitated pool, in described agitated pool, add lime and stirring, then water is imported a settling tank.
Further, an intake stack is set, a blower fan is set on described intake stack in a side of agitated pool.
Further, an intake stack is set, a blower fan is set on described intake stack in a side of settling tank.
Further, the water outlet of the settling tank mode by overflow is imported a biological contact oxidation pond.
Further, in the step of removing COD, to import through the water that dephosphorization is handled in the biological contact oxidation pond, described biological contact oxidation pond is divided into anoxic part and aerobic part, and in anoxic part and aerobic part, add soft-filler, organism is carried out the first time to be decomposed, biological contact oxidation pond is connected with a biological treatment sand cylinder, the water outlet of biological contact oxidation pond is imported biological treatment sand cylinder, in biological treatment sand cylinder, biofilter material is set, organism is carried out the second time to be decomposed, remove the COD in the water, water after will handling through biological treatment sand cylinder again returns biological contact oxidation pond, then the water in the biological contact oxidation pond is imported a sand filtering cylinder, in described sand filtering cylinder, suspended substance in the water is held back filtration, pass through the outlet conduit water outlet then, and medicating mechanism is set in outlet conduit, add sterilizing agent.
Further, described sand filtering cylinder is connected a recoil mechanism, the sewage after will recoiling by recoil mechanism imports the settling tank precipitation.
Further, be provided with an intake stack, a blower fan is set on described intake stack in a side of biological treatment sand cylinder.
Further, described soft-filler is selected from the igelite fiber.
Further, described biofilter material is selected from nut-shell or volcanics.
Principle of work of the present invention is: sanitary sewage imports agitated pool by sewer line through promoting the back, adds a small amount of lime in the agitated pool, accomplishes the effect of dephosphorization, can regulate pH in the water again, the basicity in the water body is increased, the acidity that the follow-up aeration tank that neutralizes produces.Lime and phosphoric acid salt can react and generate precipitation, and this phosphorus removing method belongs to the chemical dephosphorization method, and its effect is relatively good, can remove most of phosphorus in the waste water.Enter settling tank after the mixing effect of sewage by agitated pool, the part small granular suspended matters is by collision free setting gradually is at the bottom of the pond mutually, and former water enters next process by the mode that is similar to overflow.Sewage advances biological contact oxidation pond by the settling tank overflow, separates with wall in biological contact oxidation pond, is divided into anoxic and aerobic two portions, and adds filler therein, is used to hang microbial film.The water outlet of biological contact oxidation pond enters biological treatment sand cylinder, by biological treatment sand cylinder the organic substance in the sewage is efficiently decomposed, remove the COD in the water, and nitrogen is converted into nitric nitrogen from organic nitrogen, and then return biological contact oxidation pond, after the biological treatment of sewage by biological contact oxidation pond and biological treatment sand cylinder, filter through sand filtering cylinder, suspended substance to sewage is held back filtration, and in water outlet, be equipped with the dosing facility, add sterilizing agent, can remove the most of microorganism in the decontaminated water, reach the disinfectant effect.Sand filtering cylinder needs regularly recoil, and the sewage after its recoil enters the settling tank precipitation, and all mud all accumulate in to concentrate in the settling tank and extract, operation such as can drain into dehydration that the original sludge treating system of Sewage Plant carries out mud, concentrate.Last water outlet meets country-level A target standard.
The present invention and prior art contrast, and its effect is actively with tangible.Sanitary sewage can reach the primary standard in the city integrated emission standard after handling by method of the present invention, can be used as middle water reuse, has realized the target of energy-saving and emission-reduction.
Description of drawings:
Fig. 1 is the process flow sheet of water recovering process among the present invention.
Embodiment:
As shown in Figure 1, the invention provides a kind of middle water recovering process, comprise a step of removing phosphorus, in the process of removing phosphorus, add lime, lime and phosphate reaction precipitation also comprise a step of removing COD, in the step of removing COD, adopt biofilter material, the organic substance in the water is decomposed, remove the COD in the water, nitrogen is converted into nitric nitrogen from organic nitrogen, filters then, sterilization, water outlet.
Further, in the step of removing phosphorus, water is imported in the agitated pool, add lime and stir, then water is imported settling tank.
Further, be provided with an intake stack in a side of agitated pool, described intake stack is provided with a blower fan.
Further, be provided with an intake stack in a side of settling tank, described intake stack is provided with a blower fan.
Further, water enters biological contact oxidation pond by the mode of overflow.
Further, in the step of removing COD, to import through the water that dephosphorization is handled in the biological contact oxidation pond, described biological contact oxidation pond is divided into anoxic and aerobic two portions, and add soft-filler therein, organism is carried out the first time to be decomposed, biological contact oxidation pond is connected with a biological treatment sand cylinder, water outlet in the biological contact oxidation pond enters biological treatment sand cylinder, in biological treatment sand cylinder, be provided with a kind of biofilter material with huge specific surface area, organism is carried out the second time to be decomposed, remove the COD in the water, water after will handling through biological treatment sand cylinder again returns biological contact oxidation pond, then the water in the biological contact oxidation pond is imported sand filtering cylinder, in the sand cylinder of coming, suspended substance to sewage is held back filtration, pass through the outlet conduit water outlet then, and medicating mechanism is set in outlet conduit, add sterilizing agent.
Further, described sand filtering cylinder connects a recoil mechanism, and the sewage after will recoiling by recoil mechanism imports the settling tank precipitation.
Further, be provided with an intake stack in a side of biological treatment sand cylinder, described intake stack is provided with a blower fan.
Further, described soft-filler is selected from by the igelite fiber and constitutes.
Further, described biofilter material is selected from nut-shell or volcanics.
Claims (10)
1. water recovering process in a kind, the process that comprises water pollutant in the removal, it is characterized in that: comprise a step and a step of removing COD of removing phosphorus in the described removal in the process of water pollutant, in the step of described removal phosphorus, add lime among the Xiang Zhongshui, utilize lime and phosphate reaction precipitation, in the step of removing COD, utilize biofilter material, organic substance in the centering water decomposes, remove the COD in the water, nitrogen is converted into nitric nitrogen from organic nitrogen, filter then, sterilize.
2. water recovering process in as claimed in claim 1 is characterized in that: in the step of removing phosphorus, middle water is imported in the agitated pool, add lime and also stir in described agitated pool, then water is imported a settling tank.
3. water recovering process in as claimed in claim 2, it is characterized in that: the side at agitated pool is provided with an intake stack, and a blower fan is set on described intake stack.
4. water recovering process in as claimed in claim 2, it is characterized in that: the side at settling tank is provided with an intake stack, and a blower fan is set on described intake stack.
5. water recovering process in as claimed in claim 2 is characterized in that: the water outlet of the settling tank mode by overflow is imported a biological contact oxidation pond.
6. water recovering process in as claimed in claim 1, it is characterized in that: in the step of removing COD, to import through the water that dephosphorization is handled in the biological contact oxidation pond, described biological contact oxidation pond is divided into anoxic part and aerobic part, and in anoxic part and aerobic part, add soft-filler, organism is carried out the first time to be decomposed, biological contact oxidation pond is connected with a biological treatment sand cylinder, the water outlet of biological contact oxidation pond is imported biological treatment sand cylinder, in biological treatment sand cylinder, biofilter material is set, organism is carried out the second time to be decomposed, remove the COD in the water, water after will handling through biological treatment sand cylinder again returns biological contact oxidation pond, then the water in the biological contact oxidation pond is imported a sand filtering cylinder, in described sand filtering cylinder, suspended substance in the water is held back filtration, pass through the outlet conduit water outlet then, and medicating mechanism is set in outlet conduit, add sterilizing agent.
7. water recovering process in as claimed in claim 6 is characterized in that: described sand filtering cylinder is connected a recoil mechanism, and the sewage after will recoiling by recoil mechanism imports the settling tank precipitation.
8. water recovering process in as claimed in claim 6 is characterized in that: the side at biological treatment sand cylinder is provided with an intake stack, and a blower fan is set on described intake stack.
9. water recovering process in as claimed in claim 6, it is characterized in that: described soft-filler is selected from the igelite fiber.
10. water recovering process in as claimed in claim 6, it is characterized in that: described biofilter material is selected from nut-shell or volcanics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810208139A CN101767900A (en) | 2008-12-29 | 2008-12-29 | Reclaimed water recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810208139A CN101767900A (en) | 2008-12-29 | 2008-12-29 | Reclaimed water recycling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101767900A true CN101767900A (en) | 2010-07-07 |
Family
ID=42501028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810208139A Pending CN101767900A (en) | 2008-12-29 | 2008-12-29 | Reclaimed water recycling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101767900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233598A (en) * | 2013-05-07 | 2013-08-07 | 顾建 | Life integration environmentally-friendly facility for field operation |
-
2008
- 2008-12-29 CN CN200810208139A patent/CN101767900A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233598A (en) * | 2013-05-07 | 2013-08-07 | 顾建 | Life integration environmentally-friendly facility for field operation |
| CN103233598B (en) * | 2013-05-07 | 2015-05-20 | 江苏科威环保技术有限公司 | Life integration environmentally-friendly facility for field operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100707 |