CN1458092A - Rich nutritive raw water treating method - Google Patents
Rich nutritive raw water treating method Download PDFInfo
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- CN1458092A CN1458092A CN 03128848 CN03128848A CN1458092A CN 1458092 A CN1458092 A CN 1458092A CN 03128848 CN03128848 CN 03128848 CN 03128848 A CN03128848 A CN 03128848A CN 1458092 A CN1458092 A CN 1458092A
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Abstract
The present invention belongs to the field of environment protecting technology and is one rich nutritive raw water treating method. Raw water is treating through air floating, reaction, deposition and sludge reflux to eliminate its algae, ammonia nitrogen and organic pollutant. The biological carrier of cheap granular matter and microbe are made to flow in the reactor to avoid the blocking of filtering bed, and deposition and sludge pond is used as the biochemical reactor. The present invention has low investment, less covered area, simple operation, low cost and low labor strength.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of eutrophic raw water treatment process.
Background technology
Unhurried current such as lake, reservoir or closure water body, if be subjected to serious nitrogen, phosphorus pollution, to cause body eutrophication, under the good growing weather condition, will cause the alga eruption growth, cause this former glassware for drinking water to have some to be different from the water quality characteristics of general surface water, be embodied in low turbidity, high algae, colourity is higher, stink is big, simultaneously toward contact with the high characteristics of ammonia nitrogen concentration.Processing to this eutrophic raw water is an a great problem at present.
Eutrophic raw water is handled main air supporting method, the Powdered Activated Carbon of adopting both at home and abroad and add method, biological treatment.
The air supporting method can effectively be removed the high density algae, eliminates the disadvantageous effect of high algae to conventional treatment process.But the air supporting method can't be removed dissolved organic matter, also can't reduce ammonia nitrogen concentration in the water.
The Powdered Activated Carbon method of adding can be eliminated colourity, stink and the partial organic substances of water, but can't remove ammonia nitrogen.And the disposable use of Powdered Activated Carbon also makes processing cost higher.
Biological treatment mainly comprises biological former water pretreatment technology and (ozone) biological activated carbon advanced treatment process.
Biological former water pretreatment technology has two kinds of methods, contact oxidation method and biological ceramic particle filter tank usually.Using more sophisticated is contact oxidation method.In contact-oxidation pool, install mass filler, and investment is big, take up an area of big (residence time is long), safeguard inconvenience (changing the filler trouble, easy deposition at the bottom of the pond), move dumb.Contact oxidation method is also relatively poor to the removal efficient of algae, can't adapt to high algae water quality.
(ozone) biological activated carbon advanced treatment process treatment effect is good, but investment and working cost are very high, in present condition, can't large-scale promotion use in medium and small water factory.(ozone) biological activated carbon advanced treatment process causes precipitation and filters total amount algae does not provide solution yet.
Summary of the invention
The objective of the invention is to propose a kind of simple to operate, with low cost, can effectively remove little pollution eutrophic raw water treatment process (being called for short the FPB method) of pollutents such as high algae, low turbidity.
Little pollution eutrophic raw water treatment process that the present invention proposes, its concrete steps are as follows:
(1) raw water pump is gone into carry out in the air flotation pool air supporting and handle, bubbling air in the air flotation pool makes former water contain the air capacity state that reaches capacity, and the air supporting time is 15-60 minute, with effective removal algae and most of particulate matter.
(2) enter reaction tank through the water after the air supporting processing, particulate matter and water source in the reaction tank carry out hybrid reaction, and the particulate matter add-on is 5-30mg/l, and the reaction times is 15-45 minute, with the organism in absorption and the degradation water, oxidation ammonia nitrogen.If ammonia nitrogen concentration is too high in the water, suitable aeration in the reaction tank.
(3) water that comes out from reaction tank enters settling tank, and sedimentation time is 2-3 hour, and the water that comes out in the settling tank enters follow-up filtering basin, in settling tank, microorganism and water still keep in touch, and proceed biochemical reaction, and biological sludge is deposited in the settling tank bottom, discharged by scraping and sucking machine, enter the organic sludge pond, carry out aeration in the organic sludge pond, the air capacity that feeds in the organic sludge pond is the 10%-200% of the water yield, to keep the dissolved oxygen in the sludge sump, keep microorganism active.Part mud is back to reaction tank, and internal circulating load reaches 50-2000mg/l for particulate matter content.Another part mud enters inorganic sludge sump as excess sludge and dewaters or mummification.
In reaction tank, the particulate matter that is added can for following one or more: Powdered Activated Carbon, diatomite, zeolite, wilkinite etc.
In the FPB technology, adopt air supporting to handle and mainly act as, interception algae and inorganic particle carry out oxygenation to water body, provide subsequent biological treatment required dissolved oxygen.Air supporting efficiently is the most important condition of FPB technology successful operation.If there is not the air supporting of operational excellence, a large amount of algae will enter biochemistry-precipitation-returned sluge system, the rotten decomposition of algae can give out stink, to influence effluent quality and operating environment, a large amount of sand grains enter system and make the increase of sludge sump excess sludge sludge volume and cause sludge retention time can't reach the mud age of nitrobacteria.
The effect of adding particulate matter is: the responsive pollutent in adsorb organic compound and other water body, as bio-carrier, biological bacteria micelle structure is improved, strengthen the zoogloea sedimentation function, be beneficial in settling tank, remove, prolong biological bacteria micelle and nutraceutical duration of contact, prolong mud mud age, make nitrated being achieved.
The sludge sump that uses in the FPB technology, can utilize the precipitating sludge pond of common specification, the precipitating sludge pond is divided into inorganic sludge sump and organic sludge pond, the organic sludge pond mainly holds Powdered Activated Carbon and the microorganism that settling tank is discharged, the inorganic mud that settling tank was discharged when inorganic sludge sump switched to conventional operation when mainly holding air supporting mud, excess sludge and high turbidity.
Biological effect is: organism in the water is degraded, ammonia nitrogen is carried out nitrated, improve effluent water quality comprehensively, reduce AOC (can assimilate organic charcoal), reduce the risk that ductwork water quality worsens; Particulate matter is carried out bio-regeneration, improve the service efficiency of particulate matter, prolong the work-ing life of particulate matter significantly.
Biochemical part in the FPB technology adopts cheap particulate matter as bio-carrier, and particulate matter and microorganism are flowed in reactor, have avoided the filter bed obstruction.Precipitation in the conventional water inlet of the utilization technology and sludge sump have at utmost been saved investment and occupation of land as biochemical reaction tank.
The present invention takes up an area of less, simple to operate, with low cost, labor strength is low.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1, somewhere water pumped into carry out air supporting in the air flotation pool and handle, and bubbling air in the air flotation pool makes former water contain the air capacity state that reaches capacity, and the air supporting time is 20 minutes; Enter reaction tank through the water after the air supporting processing, Powdered Activated Carbon and water source in the reaction tank carry out hybrid reaction, and the reaction times is 20 minutes, and the Powdered Activated Carbon add-on is 10mg/l; The water that comes out from reaction tank enters settling tank, sedimentation time is 2.5 hours, the water that comes out in the settling tank enters follow-up filtering basin, biological sludge is deposited in the settling tank bottom, is discharged by scraping and sucking machine, enters the organic sludge pond, the air capacity that feeds in the organic sludge pond is 50% of the water yield, part mud is back to the reaction tank circulation, and internal circulating load reaches 200mg/l for the powder activity carbon content, and another part mud enters inorganic sludge sump as excess sludge and dewaters.
Embodiment 2, somewhere water is pumped into carry out air supporting in the air flotation pool and handle, and bubbling air in the air flotation pool makes former water contain the air capacity state that reaches capacity, and the air supporting time is 25 minutes; Enter reaction tank through the water after the air supporting processing, zeolite and water source in the reaction tank carry out hybrid reaction, and the reaction times is 40 minutes, and the zeolite add-on is 25mg/l; The water that comes out from reaction tank enters settling tank, sedimentation time is 2.5 hours, the water that comes out in the settling tank enters follow-up filtering basin, biological sludge is deposited in the settling tank bottom, is discharged by scraping and sucking machine, enters the organic sludge pond, the air capacity that feeds in the organic sludge pond is 150% of the water yield, part mud is back to reaction tank, and internal circulating load is that zeolite content reaches 1000mg/1, and another part mud enters inorganic sludge sump as excess sludge and dewaters.
Claims (2)
1, a kind of eutrophic raw water treatment process is characterized in that concrete steps are:
(1) raw water pump is gone into carry out in the air flotation pool air supporting and handle, bubbling air in the air flotation pool makes former water contain the air capacity state that reaches capacity, and the air supporting time is 15-60 minute;
(2) enter reaction tank through the water after the air supporting processing, particulate matter and water source in the reaction tank carry out hybrid reaction, and the particulate matter add-on is 5-30mg/l, and the reaction times is 15-45 minute;
(3) water that comes out from reaction tank enters settling tank, sedimentation time is 2-3 hour, the water that comes out in the settling tank enters follow-up filtering basin, biological sludge part in the settling tank is back to reaction tank, the air capacity that feeds in the organic sludge pond is the 10%-200% of the water yield, internal circulating load reaches 50-2000mg/l for particulate matter content, and another part mud enters inorganic sludge sump as excess sludge and dewaters or mummification.
2, eutrophic raw water treatment process according to claim 1 is characterized in that particulate matter is an one of the following kind or several: Powdered Activated Carbon, diatomite, zeolite, wilkinite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03128848 CN1458092A (en) | 2003-05-27 | 2003-05-27 | Rich nutritive raw water treating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03128848 CN1458092A (en) | 2003-05-27 | 2003-05-27 | Rich nutritive raw water treating method |
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| CN1458092A true CN1458092A (en) | 2003-11-26 |
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| CN 03128848 Pending CN1458092A (en) | 2003-05-27 | 2003-05-27 | Rich nutritive raw water treating method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368312C (en) * | 2005-11-10 | 2008-02-13 | 郑永旭 | Process for enriching transferring algae in lanpscape water |
| CN102639450A (en) * | 2009-07-08 | 2012-08-15 | 沙特阿拉伯石油公司 | Low concentration wastewater treatment system and process |
| CN101580314B (en) * | 2009-05-21 | 2014-02-26 | 广州市市政工程设计研究院 | Method for removing algae by flotation and sedimentation solid-liquid separation |
| US9290399B2 (en) | 2009-07-08 | 2016-03-22 | Saudi Arabian Oil Company | Wastewater treatment process including irradiation of primary solids |
| CN105540987A (en) * | 2015-12-31 | 2016-05-04 | 青岛太平洋化工装备有限公司 | Water deep purification method |
| CN106268662A (en) * | 2016-08-25 | 2017-01-04 | 贵州万山兴隆锰业有限公司 | A kind of manganese ore waste water adsorbing material and preparation method thereof |
-
2003
- 2003-05-27 CN CN 03128848 patent/CN1458092A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368312C (en) * | 2005-11-10 | 2008-02-13 | 郑永旭 | Process for enriching transferring algae in lanpscape water |
| CN101580314B (en) * | 2009-05-21 | 2014-02-26 | 广州市市政工程设计研究院 | Method for removing algae by flotation and sedimentation solid-liquid separation |
| CN102639450A (en) * | 2009-07-08 | 2012-08-15 | 沙特阿拉伯石油公司 | Low concentration wastewater treatment system and process |
| CN102639450B (en) * | 2009-07-08 | 2015-06-03 | 沙特阿拉伯石油公司 | Low concentration wastewater treatment system and process |
| US9073764B2 (en) | 2009-07-08 | 2015-07-07 | Saudi Arabian Oil Company | Low concentration wastewater treatment system and process |
| TWI491568B (en) * | 2009-07-08 | 2015-07-11 | 沙烏地阿拉伯油品公司 | Low concentration wastewater treatment system and process |
| US9290399B2 (en) | 2009-07-08 | 2016-03-22 | Saudi Arabian Oil Company | Wastewater treatment process including irradiation of primary solids |
| US9340441B2 (en) | 2009-07-08 | 2016-05-17 | Saudi Arabian Oil Company | Wastewater treatment system including irradiation of primary solids |
| CN105540987A (en) * | 2015-12-31 | 2016-05-04 | 青岛太平洋化工装备有限公司 | Water deep purification method |
| CN106268662A (en) * | 2016-08-25 | 2017-01-04 | 贵州万山兴隆锰业有限公司 | A kind of manganese ore waste water adsorbing material and preparation method thereof |
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