CN101585639A - Artificial wetland sewage treatment system adopting rotational flow active sludge method pretreatment - Google Patents
Artificial wetland sewage treatment system adopting rotational flow active sludge method pretreatment Download PDFInfo
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- CN101585639A CN101585639A CNA200810112153XA CN200810112153A CN101585639A CN 101585639 A CN101585639 A CN 101585639A CN A200810112153X A CNA200810112153X A CN A200810112153XA CN 200810112153 A CN200810112153 A CN 200810112153A CN 101585639 A CN101585639 A CN 101585639A
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- 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
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Abstract
The invention relates to an artificial wetland sewage treatment system adopting rotational flow active sludge method pretreatment, which comprises a primary sedimentation tank, a venturi, a rotational flow active sludge pool, a secondary sedimentation tank and an artificial wetland, wherein a bar screen is positioned in the front of the primary sedimentation tank; the inlet of the gradually reducing part of the venturi is connected with the upper part of the primary sedimentation tank through a high-pressure pump, the throat part is connected with the atmosphere through an air inlet pipe, and the outlet of the gradually expanding part is provided with a jet pipe extending forwards; the jet pipe is tangentially connected with the lower part of the rotational flow active sludge pool, and the shape of the cross section of the rotational flow active sludge pool is round; the yielding water of the rotational flow active sludge pool is connected into the secondary sedimentation tank, and the yielding water of the secondary sedimentation tank is connected into the artificial wetland; and the artificial wetland adopts a horizontal baffling structure, and the water outlet is provided with a water storage tank. The artificial wetland sewage treatment system has the advantages of simple structure, convenient operation, good adaptability, high oxygen content in the sewage and good purification effect, and is mainly adapted to the treatment of domestic sewage.
Description
Technical field
The present invention relates to a kind of Sewage treatment systems, particularly a kind of comprehensive sewage treatment system in conjunction with various processing modes based on the rotational flow active sludge pond belongs to field of environment protection.
Background technology
The mankind use precipitation, filtration process as centralized water treatment plant the earliest from Englishman in 1804, the American had invented coagulation, precipitation, filtration, chlorine disinfectant technology in 1884, use the history in existing 120 years till today, though the mankind constantly have new discovery and raising aspect clean water treatment, but the treatment process of domestic water but remains unchanged basically, does not upgrade in essence and breaks through.Yet very big variation has but taken place at the water source of process object: the water source before century-old is because industrial, agriculture undeveloped, and water body is not contaminated.And in decades, development of modern industry, especially chemical engineering industry happen suddenly, industrial wastewater discharge, the loss of agrochemical, agricultural chemicals, the pollution of sanitary sewage etc., serious day by day to the contaminated degree of source water, make the traditional water treatment process be difficult to guarantee fine water.
The aerobe method is rapider, thorough than anaerobic treatment method to the removal of organic pollution materials, though need to consume more energy, but still be the most frequently used method of sewage disposal.The aerobe method is divided into two kinds of activated sludge process and biomembrance process substantially, and both differences are that the aerobic microbiological form with mud in sewage in the activated sludge process is the suspended state growth, and the embrane method microorganism then anchors on the filler of setting and grows.These two kinds of aerobic processes respectively have relative merits, and long developing history is arranged all, totally it seems, the former is better to the removal effect of organic pollutant, need lower initial cost, but operation is complicated, is used for the occasion than big yield more: and the latter more adapts to the impact load that the variation of water quality, the water yield brings, operate also simpler, thereby be used for the less water yield or the processing of micro-polluted water more.
For aerobic biological process for treating, important factor is the oxygen level in the sewage, and the usefulness that therefore improves aerator is one of key that relates to purification efficiency and degree of purification.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides the pretreated artificial marsh sewage treatment system of a kind of employing rotational flow active sludge method, this system can increase substantially the oxygen level in the sewage, effectively improves aerobic purification efficiency and degree of purification.
Technical scheme of the present invention is: the pretreated artificial marsh sewage treatment system of a kind of employing rotational flow active sludge method, comprise a heavy pond, Venturi meter, the rotational flow active sludge pond, second pond and artificial swamp, the convergent portion import of described Venturi meter connects the top in described one heavy pond by high-pressure pump, throat connects atmosphere by inlet pipe, the outlet of flaring portion is provided with the jet pipeline that extends forward, this jet pipe tangentially is connected in the bottom in described rotational flow active sludge pond, described second pond is positioned at the back in described rotational flow active sludge pond, the water outlet that connects described rotational flow active sludge pond, the water outlet of described second pond inserts described artificial swamp.
The present invention is by carrying out aeration efficiently in front, rotational flow active sludge pond by Venturi meter, increase substantially the oxygen level in the sewage, for the not too high general organic sewage of most concentration such as sanitary sewage, can effectively improve follow-up rotational flow active sludge pond treatment condition, improve the aerobic biochemical processing power, improve the degree of purification of the water outlet in rotational flow active sludge pond, simultaneously, the jet of Venturi meter tangentially enters the bottom in rotational flow active sludge pond, in the rotational flow active sludge pond, be formed on the eddy flow that makes progress down, aggravated in the sewage organic molecule with the contact of aerobic microbiological in the active sludge, also owing to the stirring of eddy flow to active sludge, make the content and the quantity of reflux that can improve active sludge in the rotational flow active sludge pond, these all help the carrying out of aerobic biochemical the density of raising aerobic microbiological, have improved purification efficiency and decontamination effect improving; Because the sewage after handling through rotational flow active sludge also enters artificial swamp and carries out plural types of processings, makes water outlet can arrive treatment effect preferably, not only can satisfy emission standard, but also can be in some way in addition recycle.In addition, process design of the present invention is reasonable, because front, rotational flow active sludge pond is provided with heavy pond, the foreign material and the settleable matter of bulk in the sewage are precipitated out, alleviate the pollutant load of subsequent technique, and eliminated reluctant bulk of biochemical reaction and large particulate matter, avoided these materials in the rotational flow active sludge pond, to stop up bed of packings, the setting of second pond then is used for precipitating mud and other settleable matters of sewage, guarantees the degree of purification of water outlet.In addition, this system architecture is simple, and is easy to operate, and adaptability is good, allows sewage quantity that bigger rangeability is arranged.
Description of drawings
Fig. 1 is a system architecture synoptic diagram of the present invention.
Embodiment
Referring to Fig. 1, the invention provides the pretreated artificial marsh sewage treatment system of a kind of employing rotational flow active sludge method, comprise a heavy pond 2, Venturi meter 4, rotational flow active sludge pond 5, second pond 6 and artificial swamp, described grid is positioned at the front in described one heavy pond, the convergent portion import of described Venturi meter connects the top in described one heavy pond by high-pressure pump 3, throat connects atmosphere by inlet pipe, the outlet of flaring portion is provided with the jet pipeline that extends forward, this jet pipe tangentially is connected in the bottom in described rotational flow active sludge pond, the water outlet in described rotational flow active sludge pond inserts described second pond, and the water outlet of described second pond inserts described artificial swamp.
Described one heavy front, pond can be provided with grid, and described grid is many can to adopt mechanical grille, also can adopt stationary grizzly, and described stationary grizzly is provided with the mechanism that skims.
Described one heavy bottom, pond is inversed taper platform shape, is beneficial to the deposition of mud, and the bottom is connected with a heavy pond sludge pump, can regularly mud be released by sludge pump.
The section form in described rotational flow active sludge pond is circular, so that form eddy flow.
Described inlet pipe can be provided with check valve, avoids occurring flowing backwards.
Described inlet pipe can also be provided with variable valve, with the control air input, avoids the excessive consumption of energy.
Described second pond is provided with the mud return line that connects the rotational flow active sludge pond, is used for to rotational flow active sludge pond returned sluge.
The mud discharging mouth of described one heavy pond and second pond is connected sludge pump separately respectively, and described each sludge pump is connected in sludge sump 8, handles so that mud is entered sludge sump.
The matrix of described artificial swamp can adopt one or more the mixture in sand compound, rubble, zeolite, Wingdale, cinder, slag, blast furnace slag, rubble, haydite, melon seeds sheet and the cobble.
The plant of described artificial swamp can be adopted the suitable plant that is suitable for local environment conditions and sewage disposal needs, for example reed, Canna generalis Bailey, cattail, Rush, giantreed, Caulis Miscanthis floriduli etc.
Described artificial swamp can utilize existing wetland conditions such as existing depression, pool, handles the back through the bottom surface antiseepage and forms, to avoid sewage permeation polluted underground water in the underground water.
Can also culture bivalves in the described artificial swamp, so that removal of pollutants plays the effect that purifies water.
Described artificial swamp adopts the horizontal baffling structure, and its water outlet place is provided with retention basin 9.
Can be provided with level backflow dividing plate or partition wall in the described artificial swamp, reflux, prolong flow path, and form different conversion zones in different zones so that form.
Described retention basin is arranged on the current end of artificial swamp, so that collect through the sewage behind the wetland purification, is provided with submersible pump in the pond, so that water is got, carries out recycle.
Claims (10)
1. one kind is adopted the pretreated artificial marsh sewage treatment system of rotational flow active sludge method, it is characterized in that comprising a heavy pond, Venturi meter, the rotational flow active sludge pond, second pond and artificial swamp, the convergent portion import of described Venturi meter connects the top in described one heavy pond by high-pressure pump, throat connects atmosphere by inlet pipe, the outlet of flaring portion is provided with the jet pipeline that extends forward, this jet pipe tangentially is connected in the bottom in described rotational flow active sludge pond, described second pond is positioned at the back in described rotational flow active sludge pond, the water outlet that connects described rotational flow active sludge pond, the water outlet of described second pond inserts described artificial swamp.
2. the pretreated artificial marsh sewage treatment system of employing rotational flow active sludge method as claimed in claim 1, the section form that it is characterized in that described rotational flow active sludge pond is for circular.
3. the pretreated artificial marsh sewage treatment system of employing rotational flow active sludge method as claimed in claim 2 is characterized in that described second pond is provided with the mud return line that connects the rotational flow active sludge pond.
4. as claim 1, the pretreated artificial marsh sewage treatment system of 2 or 3 described employing rotational flow active sludge methods, it is characterized in that described one heavy bottom, pond is inversed taper platform shape.
5. the pretreated artificial marsh sewage treatment system of employing rotational flow active sludge method as claimed in claim 4 is characterized in that a heavy front, pond is provided with grid, and described grid is mechanical grille or stationary grizzly, and described stationary grizzly is provided with the device of skimming.
6. the pretreated artificial marsh sewage treatment system of employing rotational flow active sludge method as claimed in claim 5 is characterized in that the described one mud discharging mouth that sinks pond and second pond is connected sludge pump separately respectively, and described each sludge pump is connected in sludge sump.
7. the pretreated artificial marsh sewage treatment system of employing rotational flow active sludge method as claimed in claim 6 is characterized in that described inlet pipe is provided with check valve.
8. the pretreated artificial marsh sewage treatment system of employing rotational flow active sludge method as claimed in claim 7 is characterized in that described inlet pipe also is provided with variable valve.
9. high-efficiency pre-aeration aerobic biochemical sewage treatment system as claimed in claim 8 is characterized in that described artificial swamp adopts the horizontal baffling structure, and its water outlet place is provided with retention basin, and described retention basin is provided with the return line to artificial swamp feed-water end recirculation water.
10. high-efficiency pre-aeration aerobic biochemical sewage treatment system as claimed in claim 9, the matrix that it is characterized in that described artificial swamp adopt in sand compound, rubble, zeolite, Wingdale, cinder, slag, blast furnace slag, rubble, haydite, melon seeds sheet and the cobble any one or multiple, also culturing in the artificial swamp has bivalves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810112153XA CN101585639A (en) | 2008-05-20 | 2008-05-20 | Artificial wetland sewage treatment system adopting rotational flow active sludge method pretreatment |
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| CNA200810112153XA CN101585639A (en) | 2008-05-20 | 2008-05-20 | Artificial wetland sewage treatment system adopting rotational flow active sludge method pretreatment |
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| CN101585639A true CN101585639A (en) | 2009-11-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838261A (en) * | 2012-09-26 | 2012-12-26 | 湖南大学 | Scattered domestic sewage treatment method |
| CN105753165A (en) * | 2016-04-25 | 2016-07-13 | 农业部沼气科学研究所 | Anti-blocking denitrification wetland structure and treatment method thereof |
| CN107720973A (en) * | 2017-11-22 | 2018-02-23 | 上海禾元环保集团有限公司 | A kind of sewage treatment plant tail water artificial wet land treating system |
| CN112387139A (en) * | 2020-12-03 | 2021-02-23 | 浙江科菲科技股份有限公司 | Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas |
-
2008
- 2008-05-20 CN CNA200810112153XA patent/CN101585639A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838261A (en) * | 2012-09-26 | 2012-12-26 | 湖南大学 | Scattered domestic sewage treatment method |
| CN102838261B (en) * | 2012-09-26 | 2013-12-18 | 湖南大学 | Scattered domestic sewage treatment method |
| CN105753165A (en) * | 2016-04-25 | 2016-07-13 | 农业部沼气科学研究所 | Anti-blocking denitrification wetland structure and treatment method thereof |
| CN105753165B (en) * | 2016-04-25 | 2018-06-08 | 农业部沼气科学研究所 | A kind of wetland structure and its processing method of anti-blocking denitrogenation |
| CN107720973A (en) * | 2017-11-22 | 2018-02-23 | 上海禾元环保集团有限公司 | A kind of sewage treatment plant tail water artificial wet land treating system |
| CN107720973B (en) * | 2017-11-22 | 2024-03-15 | 上海禾元环保集团有限公司 | Sewage treatment plant tail water constructed wetland treatment system |
| CN112387139A (en) * | 2020-12-03 | 2021-02-23 | 浙江科菲科技股份有限公司 | Device for removing copper ions in nickel electrolysis mixed acid system by using hydrogen sulfide gas |
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Open date: 20091125 |