CN102515419A - Short-flow micro-polluted raw water treatment combined system integrated with adsorption, biological oxidation and membrane separation technologies - Google Patents
Short-flow micro-polluted raw water treatment combined system integrated with adsorption, biological oxidation and membrane separation technologies Download PDFInfo
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- CN102515419A CN102515419A CN2011103857304A CN201110385730A CN102515419A CN 102515419 A CN102515419 A CN 102515419A CN 2011103857304 A CN2011103857304 A CN 2011103857304A CN 201110385730 A CN201110385730 A CN 201110385730A CN 102515419 A CN102515419 A CN 102515419A
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Abstract
The invention relates to a short-flow micro-polluted raw water treatment combined system integrated with adsorption, biological oxidation and membrane separation technologies. The system comprises a raw water tank, a biological contact oxidization area, a transition area and a membrane reaction area, wherein the raw water tank is connected with a water inlet on one side at the top of the biological contact oxidization area through a water sucking membrane pump and a pipeline; an air pump is connected with an air inlet port on one side at the top of the biological contact oxidization area through a pneumatic butterfly valve and a pipeline; the air inlet port is connected with an air inlet tube; the air inlet tube is inserted into the bottom of the biological contact oxidization area; PAC (Polymeric Aluminum Chloride) grains are arranged in both of the biological contact oxidization area and the transition area; the biological contact oxidization area and the transition area are connected through an overflow plate; a sludge-discharging inclined plate is arranged at the bottom of the transition area; a membrane pool is arranged on one side of the transition area; a hollow fiber membrane is arranged in the membrane pool; the air pump is connected with the air inlet port on one side at the top of the membrane pool through the pneumatic butterfly valve and the pipeline; the air inlet port is connected with the air inlet tube; and the air inlet tube is inserted into the bottom of the membrane pool.
Description
Technical field
The present invention relates to a kind of short flow process micro-polluted raw treatment combination system that absorption-bio-oxidation-membrane separation technique is an one that collects.
Background technology
At present the Drinking Water in China water source generally is faced with the problem that solvability organic pollutant and ammonia nitrogen exceed standard in the source water; The city tap-water factory overwhelming majority still adopts coagulation-deposition-filtration-sterilization process; This technology makes effluent quality can not satisfy " drinking water sanitary standard " (GB5749-2006) to dissolved organic matter in the former water and treatment of ammonia nitrogen poor.How on the basis of existing processing unit, former Technology being carried out upgrading, the hygienic standard that makes the waterworks effluent quality satisfy tap water is the problem that the present many water factories of China face.
The membrane separation technique that rise the sixties in 20th century, owing to possess good adjusting water quality ability, it is in extensive range to remove pollutent, is easy to automatic control and management, has obtained R and D widely.Yet,,, can good effect of removing be arranged to the suspended particle in the water, but can't remove dissolved organic matter in the micro polluted source and ammonia nitrogen because its molecular weight cut-off only limits to micron order for the ultrafiltration membrance filter system that generally uses.Absorption, bio-oxidation and stripping technique are carried out effective combination, can cover the shortage, improve the removal effect of water-purifying process solvability organic pollutant and ammonia nitrogen.Powdered Activated Carbon can active adsorption water in deliquescent small organic molecule; Having under the situation of abundant dissolved oxygen; Activated carbon surface can form microbial film gradually, becomes biological activated carbon, promptly can be through dissolved organic matter and the ammonia nitrogen in the biological oxidation degradation water; Nutritive substance in the charcoal absorption solution provides good environment for the metabolism of mikrobe with to organic biological degradation removal, has also improved the ability of system's anti-shock loading simultaneously; In conjunction with the efficient crown_interception of ultra-filtration membrane to macromolecular substance, gac flco and some macromole microbial metabolites can both obtain separating and remove in the mixed solution, make indexs such as delivery turbidity, organism and ammonia nitrogen be greatly improved.
Summary of the invention
The purpose of this invention is to provide a kind of short flow process micro-polluted raw treatment combination system that absorption-bio-oxidation-membrane separation technique is an one that collects.
Collection absorption-bio-oxidation-membrane separation technique that the present invention proposes is the short flow process micro-polluted raw treatment combination system of one; This system comprises raw water box 1, bio-contact oxidation district 4, zone of transition 5 and film reaction district 9; Raw water box 1 is through suction surge pump 2 and 4 tops, pipe connection bio-contact oxidation district, one side water-in; Air pump 3 is through pneumatic dish valve 11 and 4 tops, pipe connection bio-contact oxidation district, one side-inlet; Said inlet mouth connects inlet pipe, and inlet pipe is inserted 4 bottoms, bio-contact oxidation district; Be equipped with PAC particle 6 in bio-contact oxidation district 4 and the zone of transition 5, bio-contact oxidation district 4 and zone of transition 5 are connected through overflow plate, and zone of transition 5 bottoms are provided with spoil disposal swash plate 8, and zone of transition 5 one sides are provided with membrane cisterna 9, are provided with hollow-fibre membrane 10 in the membrane cisterna 9; Air pump 3 is through the inlet mouth of pneumatic dish valve 11 and pipe connection membrane cisterna 9 tops one side, and said inlet mouth connects inlet pipe, and inlet pipe is inserted membrane cisterna 9 bottoms.
Among the present invention, bio-contact oxidation district 4, zone of transition and membrane cisterna 9 bottoms are equipped with blow-off valve 7.
Among the present invention, the water outlet of membrane cisterna 9 is through water pump 2 and pipe connection filtered water tank.
Working process of the present invention is following: former water by the suction surge pump 2 be promoted in the bio-contact oxidation district 4 by raw water box 1, simultaneously, by air pump 3 through pneumatic dish valve 11 aeration in bio-contact oxidation district 4.In the bio-contact oxidation district 4 with zone of transition 5 be equipped with PAC particle 6, PAC particle 6 abundant and former water in bio-contact oxidation district 4 mixes, then in overflow to the zone of transition 5.Be provided with spoil disposal swash plate 8 in zone of transition 5 bottoms.Former water carries out membrane cisterna 9 after zone of transition 5, in membrane cisterna 9, be provided with hollow-fibre membrane 10, by air pump 3 through pneumatic dish valve 11 aeration in membrane cisterna 9.In bio-contact oxidation district 4, zone of transition 5 and membrane cisterna 9 bottoms are equipped with blow-off valve 7.Former water is evacuated to filtered water tank through water pump 2 by membrane cisterna 9.
The technical scheme that the present invention adopted is:
Former water gets into biological contact oxidation pond at coagulation, short period of time post precipitation, is carrying out after thorough mixing contacts the sedimentation of overflow to zone of transition with activated carbon granule under the effect of aerating system; Then water gets into membrane cisterna, the absorption of membrane cisterna hollow-fibre membrane, hold back with the biological degradation acting in conjunction under further be purified; The active sludge of zone of transition and membrane cisterna bottom is back to biological contact oxidation pond through mud scraper, forms the water-purifying process that can remove suspended substance, ammonia nitrogen, dissolved organic matter that integrates Powdered Activated Carbon absorption, biological degradation and membrane sepn.This technology is removed the pollutent that concentration is low, kind is many, character is complicated in the water body especially to dystrophic micro-polluted surface water source water, also possess simultaneously opposing water quality and water yield variation impact, equipment layout compactness, be easy to advantage such as robotization control and management.
This combined system has kept the reaction and the depositing technology of 1/2 residence time of former water treatment system; In 1/2 horizontal sedimentation tank of back, add Powdered Activated Carbon in biological contact oxidation pond; Powdered Activated Carbon is contacted with water fully; Solvability small organic molecule in the charcoal absorption water also passes through biodegradable organism in the biological oxidation degradation water; Get into zone of transition subsequently, the sedimentation in zone of transition of most of Powdered Activated Carbon, the gac mud of zone of transition and membrane cisterna is back in the contact-oxidation pool feed-water end through bottom mud scraper and recycles.The water that is processed gets into the submerged ultrafiltration pond, through suction pump clear water is pumped into clean water basin, accomplishes whole water technology.
The aforesaid combination system has following advantage:
(1) to micro-polluted source water subject matter: COD
MnExceed standard with ammonia nitrogen, add Powdered Activated Carbon and can adsorb fixedly dissolved organic matter matter,,, grow microbial film on the Powdered Activated Carbon gradually, become biological activated carbon, can remove the COD in the water well along with the operation of system having under the situation of dissolved oxygen
MnAnd ammonia nitrogen.
(2) ultra-filtration membrane can separate activated carbon granule in the mixed solution and some macromole microbial metabolites the good crown_interception of macromolecular substance, has guaranteed good effluent quality.
(3) total system comprised gac in the mixed solution absorption biological degradation and ultra-filtration membrane hold back centrifugation, mixed solution and film form double shield, it is strong therefore to resist the environmental change ability.
(4) Powdered Activated Carbon once adds, and in system, recycles, and gives full play to the adsorption of gac, and makes the microbial film on surface keep normal vital movement, can practice thrift the dosage of gac simultaneously.
Description of drawings
Fig. 1 is a structural diagrams of the present invention.
Label among the figure: 1 is raw water box, and 2 are the suction surge pump, and 3 is small air pump, and 4 is biological contact oxidation pond, and 5 is zone of transition, and 6 is the PAC particle, and 7 is blow-off valve, and 8 is the spoil disposal swash plate, and 9 is membrane cisterna, and 10 is hollow-fibre membrane, and 11 is Pneumatic butterfly valve, and 12 is vacuum meter.
Embodiment
Combine accompanying drawing to further specify the present invention through embodiment below
.
Embodiment 1:
As shown in Figure 1; Native system comprises raw water box 1, bio-contact oxidation district 4, zone of transition 5 and film reaction district 9; Raw water box 1 is through suction surge pump 2 and 4 tops, pipe connection bio-contact oxidation district, one side water-in; Air pump 3 is through pneumatic dish valve 11 and 4 tops, pipe connection bio-contact oxidation district, one side-inlet, and said inlet mouth connects inlet pipe, and inlet pipe is inserted 4 bottoms, bio-contact oxidation district; Be equipped with PAC particle 6 in bio-contact oxidation district 4 and the zone of transition 5, bio-contact oxidation district 4 and zone of transition 5 are connected through overflow plate, and zone of transition 5 bottoms are provided with spoil disposal swash plate 8, and zone of transition 5 one sides are provided with membrane cisterna 9, are provided with hollow-fibre membrane 10 in the membrane cisterna 9; Air pump 3 is through the inlet mouth of pneumatic dish valve 11 and pipe connection membrane cisterna 9 tops one side, and said inlet mouth connects inlet pipe, and inlet pipe is inserted membrane cisterna 9 bottoms.Bio-contact oxidation district 4, zone of transition and membrane cisterna 9 bottoms are equipped with blow-off valve 7.The water outlet of membrane cisterna 9 is through water pump 2 and pipe connection filtered water tank.
After former water adds medicament,, be condensed into alumen ustum, and make the ferromanganese ion that possibly exist obtain sufficient oxidation, these medicaments that add are played one's part to the full through mixing fully and perfect flocculation.Handle the back through preliminary sedimentation tank and get into raw water box 1.Get into biological contact oxidation pond 4 through suction surge pump 2.Biological contact oxidation pond 4 is established total canal that catchments, and zone of transition 5 and membrane cisterna 9 and the concentrated active sludge that scrapes mix with the water outlet of raw water box 1 at biological contact oxidation pond 4 places.After biological contact oxidation pond 4, establish zone of transition 5, make the water outlet of biological contact oxidation pond 4, carry out preliminary deposition on the spoil disposal swash plate 8 in zone of transition 5, get into membrane cisterna 9 then, be provided with hollow-fibre membrane 10 in the membrane cisterna 9.In zone of transition and extend to membrane cisterna 9; If reciprocating type bottom mud scraper; Establish gas in biological contact oxidation pond 4 exits and carry mud discharging device, sedimentary mud in zone of transition 5, the membrane cisterna 9 is concentrated and discharges, extremely last lattice oxidation adsorption tank mixes with the preliminary sedimentation tank water outlet of transformation back.Unnecessary thickened sludge is regularly discharged.
The pipeline of membrane cisterna 9 is made up of suction surge pump 2, Pneumatic butterfly valve 11 and pipeline, and the pipeline through membrane cisterna 9 links membrane cisterna 9 and rising pipe, the full-automatic processes such as product water, backwash, blast aeration and integrity detection of accomplishing.
The effect that this combined system of example explanation is handled micro-polluted raw that operates to water seal factory in source in certain city: raw water turbidity 126 NTU, ammonia nitrogen 1.14 mg/L, COD
Mn5.57 mg/L, through this combined system: dosing coagulant mixes after behind the folded plate flocculation, short flow process deposition, Powdered Activated Carbon catalytic oxidation, membrane separation process, delivery turbidity 0.03 NTU, ammonia nitrogen 0.21 mg/L, COD
Mn1.55 mg/L; Characteristic pollutent index and conventional water-quality guideline all reach " drinking water sanitary standard " (GB5749-2006); Effluent quality is superior to former conventional water treatment process, particularly improves process system greatly to organic pollutant and treatment of ammonia nitrogen effect.
Claims (3)
1. collection absorption-bio-oxidation-membrane separation technique is the short flow process micro-polluted raw treatment combination system of one; It is characterized in that this system comprises raw water box (1), bio-contact oxidation district (4), zone of transition (5) and film reaction district (9); Raw water box (1) is through suction surge pump (2) and top, pipe connection bio-contact oxidation district (4) one side water-in; Air pump (3) is through pneumatic dish valve (11) and pipe connection bio-contact oxidation district (4) top one side-inlet; Said inlet mouth connects inlet pipe, and inlet pipe is inserted bottom, bio-contact oxidation district (4); Be equipped with PAC particle (6) in bio-contact oxidation district (4) and the zone of transition (5); Bio-contact oxidation district (4) is connected through overflow plate with zone of transition (5); Zone of transition (5) bottom is provided with spoil disposal swash plate (8), and zone of transition (5) one sides are provided with membrane cisterna (9), are provided with hollow-fibre membrane (10) in the membrane cisterna (9); Air pump (3) is through the inlet mouth of pneumatic dish valve (11) and pipe connection membrane cisterna (9) top one side, and said inlet mouth connects inlet pipe, and inlet pipe is inserted membrane cisterna (9) bottom.
2. collection absorption-bio-oxidation according to claim 1-membrane separation technique is the short flow process micro-polluted raw treatment combination system of one, it is characterized in that said bio-contact oxidation district (4), zone of transition and membrane cisterna (9) bottom are equipped with blow-off valve (7).
3. collection absorption-bio-oxidation according to claim 1-membrane separation technique is the short flow process micro-polluted raw treatment combination system of one, and the water outlet that it is characterized in that membrane cisterna (9) is through water pump (2) and pipe connection filtered water tank.
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| CN106323689A (en) * | 2016-08-22 | 2017-01-11 | 中国食品发酵工业研究院 | Water quality monitoring-orientated polar organic trace pollutant trap |
| CN108147572A (en) * | 2018-01-23 | 2018-06-12 | 常州大学 | A kind of method of micro-polluted water treatment |
| CN108409058A (en) * | 2018-05-02 | 2018-08-17 | 上海城投水务（集团）有限公司制水分公司 | Land-saving charcoal ultrafiltration membrane combines water treatment facilities and technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800879A (en) * | 2016-05-12 | 2016-07-27 | 上海市政工程设计研究总院（集团）有限公司 | Biological carrier reflux contact oxidation pond capable of increasing concentration |
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| CN106323689B (en) * | 2016-08-22 | 2020-02-21 | 中国食品发酵工业研究院有限公司 | Trace polar organic pollutant trap with water quality monitoring as guide |
| CN108147572A (en) * | 2018-01-23 | 2018-06-12 | 常州大学 | A kind of method of micro-polluted water treatment |
| CN108409058A (en) * | 2018-05-02 | 2018-08-17 | 上海城投水务（集团）有限公司制水分公司 | Land-saving charcoal ultrafiltration membrane combines water treatment facilities and technique |
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Application publication date: 20120627 |