CN1300718A - Process for clarifying waste water difficult to degradate - Google Patents
Process for clarifying waste water difficult to degradate Download PDFInfo
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- CN1300718A CN1300718A CN 99124659 CN99124659A CN1300718A CN 1300718 A CN1300718 A CN 1300718A CN 99124659 CN99124659 CN 99124659 CN 99124659 A CN99124659 A CN 99124659A CN 1300718 A CN1300718 A CN 1300718A
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Abstract
A process for clarifying waste water difficult to degrade includes such steps as adding composite oxidizing-adsorbing air-floating agent to the waste water while mechanical stirring, air-floating oxidizing-adsorbing reacting, and solid-liquid separating. Its advantages include high effect on removing COD, BOD, NH3-N and SS, less investment, less possesses ground and low cost.
Description
The method for purifying water that the present invention relates to is that a kind of air supporting oxygenolysis and mutual synergistic principle of absorption air supporting utilized realizes the method for purifying waste water, and it can be at water of productive use, city domestic sewage, and water treatment field such as industrial and agricultural wastewater are extensive use of.Its advantage is to water treatment efficiency height, clearance height, and less investment is taken up an area of and lacked, and technology is easy to operate, easily promotes.
At present, method for purifying water is mainly bio-digestion method and flocculent precipitation both at home and abroad.At USOS1164609, CN1101628A, what put down in writing among the CN1153145A all is methods of relevant bio-digestion treating water.A plurality of countries have obtained enforcement to bio-digestion method treating water in the world; technology is ripe; BOD and ammonia nitrogen etc. have good result in the removal water; for the protection environment has played active effect; but it is low that bio-digestion method treating water exists the COD clearance, and percent of decolourization is low, and the investment of founding the factory is big; floor space is big, problems such as processing requirement height.These problems are showing in the actual motion in recent years shrilly.The flocculent precipitation treating water is many local uses of China, flocculation precipitation method, CN1167735A and the CN86108307 etc. that publish as " environmental chemistry " 1997 the 6th phases, its technology and equipment are simpler, less investment, take up an area of for a short time, remove heavy metal, phosphorus, colourity is effective, played certain effect for purifying water, but present flocculation sediment water treatment method exists to problems such as poor removal effect such as microorganism, organonitrogen, foreign odor flavor in the water.So present flocculation precipitation method is used also less in sewage disposal.
A kind of water new purification method of providing at above-mentioned bio-digestion method and flocculent precipitation existing problems is provided.Its technical scheme is to purify waste water by the synergy of oxidation, cracking, sterilization reaction and network-like flocculation, absorption, air supporting reaction.
The present invention has changed water treatment method in the past, it is according to negatively charged ion organism in the current water body (as starch, protein, movement, pigment etc.), anion surfactant (as washes etc.), suspended substance (as dirt, fiber etc.), bacterial count increase situation, earlier by agent of combined oxidation flocculation-air floating and water thorough mixing, produce nascent state free radical, atomic oxygen etc., organism, microorganism in the water are carried out oxidation, cracking, sterilization, absorption reaction; In gas floatation separation device, produce the flocculation of contract network shape, absorption, air supporting reaction again, make the quick and water sepn of air supporting thing energy, and obtain high-quality purifying waste water.
Technical scheme of the present invention is to add combined oxidation absorption gas floatation agent earlier to mix rapidly with water in mobile water, makes water body generation oxidation absorption reaction; Obtain to purify waste water and the air supporting thing through gas floatation separation device again.Combined oxidation absorption gas floatation agent described in the present invention is made up of two portions, and wherein A consists of more than one more than one elementary composition oxygenants among H, O, Cl, Na, the Ca; B consists of among Fe, Al, H, O, Cl, S, Si, the P more than one elementary composition more than three kinds sorbent materials.But floating agent A of combined oxidation wadding absorption or B random order add.
Oxidation of the present invention absorption air supporting reaction be meant combined oxidation absorption gas floatation agent with dynamic water thorough mixing in, produce nascent state free radical or materials such as atomic oxygen or molecular oxygen, organism, microorganism etc. in the water are carried out oxidation, cracking; Microorganism surface film in the water is carried out catalysis, oxidation, cause the protein chain cracking of microorganism because of enzyme system; Make water body generation oxidation, cracking, sterilization, absorption and air supporting reaction.
Air supporting thing of the present invention can partly return and recycle, and the air supporting thing can be made into worker, agricultural raw material through the froth breaking dehydration.
Purifying method of the present invention is can be according to influent quality different or to the different requirements of effluent quality, by adjusting the dosage of combined oxidation absorption gas floatation agent, adapts to the different requirements of various effluent qualities.
The said oxidation absorption of the present invention air supporting reaction can improve the separation efficiency of air supporting thing in the dissolved air flotation process by adding polyacrylamide or derivatives thereof or auxiliary agents such as treated starch or diatomite.
Above-mentioned explanation confirms, the present invention is the method for purifying water that a kind of and water treatment method in the past have fundamental difference, and it has, and efficient height, less investment, cost are low, instant effect, easy advantage such as popularization.
Following example is that the inventive method specifies, but the inventive method scope of application is not limited to following example.
Fig. 1 is a kind of schema of the inventive method.
By flow process shown in Figure 1; Sewage drives through machinery 1, makes water flow velocity at least greater than behind 8 meters of the per minutes, earlier by charging place 2, adds combined oxidation absorption gas floatation agent (A, B), makes it rapidly and the water thorough mixing, and oxicracking and flocculation absorption reaction take place in reaction unit 3 water body.Can add auxiliary agent C in charging place 4 in case of necessity, make it to mix with the water body that the oxidation absorption reaction takes place, send into gas floatation separation device 5 again, water body obtains to purify waste water after dissolved air flotation.Simultaneously, the air supporting thing that obtains can partly return feed-pipe 4 respectively and recycles in gas floatation separation device 5, or makes the air supporting thing become the industrial or agricultural starting material by dewatering unit 6, adds dose, flow, flow velocity etc. in the above-mentioned flow system and all can be finished by microcomputer ZPC control.
Example 1 adopts factory of above-mentioned diagram flow processing petrochemical refining waste water.Relevant water quality detection index before and after purifying is as shown in table 1: press treatment scale and be per hour 1 ton, adding combined oxidation absorption gas floatation agent component is Losantin or calcium peroxide, the B component is bodied ferric sulfate or polymerize aluminum chloride or its mixture, A and B ratio are 1: 1, drop into 0.1～1 kilogram of combined oxidation sorbent material ratio in sewage per ton, join in the sewage continuously.After carrying out the oxidation absorption reaction, afterwards with more than one auxiliary agents C in polyacrylamide or derivatives thereof or the diatomite, drop into the ratio of 0～5 gram auxiliary agent C in sewage per ton, join continuously in the sewage that the oxidation absorption reaction has taken place, make it with after water body mixes, after again water body being sent into gas floatation separation device, obtain to purify waste water.
Example 2 adopts above-mentioned diagram flow process to purify refuse landfill sewage.Relevant water quality detection index before and after purifying is as shown in table 1: press treatment scale and be per hour 1 ton, adding combined oxidation absorption gas floatation agent component is Losantin or calcium peroxide, the B component is bodied ferric sulfate or polymerize aluminum chloride or its mixture, A and B ratio are 1: 2, drop into 0.5～1 kilogram of combined oxidation sorbent material ratio in sewage per ton, join in the sewage continuously.After carrying out the oxidation absorption reaction, afterwards with the polyacrylamide or derivatives thereof, or more than one auxiliary agents C in the treated starch, drop into the ratio of 0～0.3 gram auxiliary agent C in sewage per ton, join continuously in the sewage that the oxidation absorption reaction has taken place, make it with after water body mixes, again water body is sent into gas floatation separation device after, obtain to purify waste water.5 </entry></row></tbody></tgroup></table></tables>
Claims (5)
1. pneumatically supported method for purifying water is adsorbed in an oxidation.It is characterized in that in mobile water, add combined oxidation absorption gas floatation agent and mix, make the absorption reaction of water body generation oxic gas buoyancy with water; Obtain to purify waste water and the air supporting dirt by gas floatation separation device again.
2. according to the isolating method for purifying water of the described a kind of oxidation absorption air supporting of claim 1, it is characterized in that said combined oxidation absorption gas floatation agent is A and B two components, the A component is by more than one more than one elementary composition oxygenants among H, O, Cl, Na, the Ca; The B component is by elementary composition more than one sorbent materials more than three kinds among Fe, Al, O, H, Cl, S, Si, the P.
3. adsorb pneumatically supported method for purifying water according to claim 1 and 2 described a kind of oxidations, it is characterized in that said oxidation absorption air supporting reaction, after being meant the combined oxidation sorbent material and water mixing, in water body, produce more than one materials in nascent state free radical or atomic oxygen or the molecular oxygen, and make dirt become annoying buoyancy material in oxidation, cracking, sterilization, reaction process, by gas floatation separation device water is purified.
4. adsorb pneumatically supported method for purifying water according to the described a kind of oxidation of claim 1, it is characterized in that in the said gas floatation separation device, the air supporting thing can be partially recycled or becomes scum silica frost, but and scum silica frost workmanship, agricultural raw material after the froth breaking dehydration.
5. adsorb pneumatically supported method for purifying water according to the described a kind of oxidation of claim 1, it is characterized in that can be according to influent quality different or to the different requirements of effluent quality, by adjusting the dosage of combined oxidation flocculation-air floating agent, adapt to the different requirements of each effluent quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99124659 CN1300718A (en) | 1999-12-23 | 1999-12-23 | Process for clarifying waste water difficult to degradate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99124659 CN1300718A (en) | 1999-12-23 | 1999-12-23 | Process for clarifying waste water difficult to degradate |
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| Publication Number | Publication Date |
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| CN1300718A true CN1300718A (en) | 2001-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 99124659 Pending CN1300718A (en) | 1999-12-23 | 1999-12-23 | Process for clarifying waste water difficult to degradate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305787C (en) * | 2002-09-27 | 2007-03-21 | 上海金迪生物技术工程有限公司 | A method for comprehensive treatment of wastewater |
| CN101434439B (en) * | 2008-11-28 | 2012-05-30 | 巨石集团有限公司 | Glass fibre wastewater pretreatment method |
| CN109081393A (en) * | 2018-08-27 | 2018-12-25 | 北京中晟清源环保科技有限公司 | A kind of new-type air-floatation auxiliary agent and preparation method |
| CN114014459A (en) * | 2021-11-01 | 2022-02-08 | 杭州回水科技股份有限公司 | Recycling system and method for scum in air floatation and sedimentation integrated machine |
-
1999
- 1999-12-23 CN CN 99124659 patent/CN1300718A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305787C (en) * | 2002-09-27 | 2007-03-21 | 上海金迪生物技术工程有限公司 | A method for comprehensive treatment of wastewater |
| CN101434439B (en) * | 2008-11-28 | 2012-05-30 | 巨石集团有限公司 | Glass fibre wastewater pretreatment method |
| CN109081393A (en) * | 2018-08-27 | 2018-12-25 | 北京中晟清源环保科技有限公司 | A kind of new-type air-floatation auxiliary agent and preparation method |
| CN114014459A (en) * | 2021-11-01 | 2022-02-08 | 杭州回水科技股份有限公司 | Recycling system and method for scum in air floatation and sedimentation integrated machine |
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