CN1603257A - Method for preparing chemical active sludge and processing domestic sewage using the same - Google Patents
Method for preparing chemical active sludge and processing domestic sewage using the same Download PDFInfo
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- CN1603257A CN1603257A CN 200410043982 CN200410043982A CN1603257A CN 1603257 A CN1603257 A CN 1603257A CN 200410043982 CN200410043982 CN 200410043982 CN 200410043982 A CN200410043982 A CN 200410043982A CN 1603257 A CN1603257 A CN 1603257A
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Abstract
The invention relates to a method to produce and recycle chemical deposition sludge and the method to use it to reinforced process domestic sewage. The chemical deposition sludge can be gained following the steps: first, pouring the domestic sewage into compound pool and putting chemical into the pool; second, domestic sewage passed reaction pool and taking turbid water separating in the deposition pool; third, aerating the sludge to gain chemical sludge. The method to process domestic sewage is the following steps: pouring sewage into compound pool, reaction pool and deposition pool taking turbid water separating, adding chemical into compound pool and adding chemical sludge into compound pool and reaction pool. When 5mg/L ferric chloride and 200ml sludge per liter to 300ml sludge per liter chemical active sludge are synergetic effecting, the reinforced removing ratio of turbidity, UV254 and COD is increased over 6.0%, 9.0%, and 10%.
Description
Technical field:
The present invention relates to a kind of preparation method, renovation process of chemically reactive mud and utilize chemically reactive mud, regeneration chemically reactive mud sanitary sewage to be carried out the method for intensive treatment.
Background technology:
It is extensive that the sewage chemical enhanced primary is handled (CEPT) process applications, is particularly suitable for the city of developing country's fast development.External after the sewage coagulating treatment of having studied two sanitary sewage disposal factories, point out that chemical enhanced one-level treatment process can become the alternative techniques of the traditional biological treatment process of disposing of sewage.Samll cities and towns are many in China, and it is wide to distribute, quantity of wastewater effluent big (account for municipal effluent total amount 70%), shortage of funding, enhanced primary treatment process have investment saves, and floor space is little, operational administrative is comparatively convenient, therefore should greatly develop the enhanced primary treatment process.At present the U.S., Hong Kong and inland of China have all been built up big, the reliable chemical enhanced one-level of the scale treatment plant that disposes of sewage.But this technology has some problems, mainly be the big and medicament expense of the sludge quantity that produces with higher, wherein produces mud and be about 1.5～2.0 times of common bio-aeration technology, and the disposal costs of mud accounts for 30～50% of entire sewage processing costs.The another one problem is how to reduce the dosage of medicament, thereby reduces the expense of operation.Also having one is that chemical enhanced treatment process is low to deliquescent organic pollutant removal efficient, approximately has only about 10～20%, and the removal of how strengthening dissolved organic matter is a major issue that solves.
Summary of the invention:
The purpose of this invention is to provide the preparation of a kind of chemically reactive mud, renovation process and utilize it to handle the sanitary sewage method, this method is by the invention to precipitating sludge regeneration activating method in the chemical enhanced processing sanitary sewage technology, make it to become chemically reactive mud and with add chemical agent act synergistically improve its in the sanitary sewage intensive treatment to organism, especially the removal efficient of dissolved organic matter reduces the usage quantity of chemical agent in the chemical enhanced treatment process and reduces the quantity discharged of mud.Chemically reactive mud of the present invention obtains according to following method: a, sanitary sewage enter into mixing pit, add 2～100mg/L chemical agent in mixing pit; B, sewage and react through reaction tank after chemical agent mixes can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; C, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 5～30 days, and dissolved oxygen content is 2～5mg/L, and the pH value adjusts to 4～8, obtains chemically reactive mud.Utilize the method for chemically reactive sludge treatment sanitary sewage to be achieved in that (one) sanitary sewage enters into mixing pit, to wherein adding chemical agent; (2) sewage with react through reaction tank after chemical agent mixes; (3) can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank, add chemically reactive mud at the reaction tank leading portion in (two) process.The renovation process of chemically reactive mud carries out according to following step: a, sanitary sewage enter into mixing pit, add 2～100mg/L chemical agent in mixing pit; B, sewage and after chemical agent mixes through reaction tank, add chemically reactive mud at the reaction tank leading portion and react; C, can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; D, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 0.5～8 hour, and dissolved oxygen content is 2～5mg/L, and the pH value adjusts to 4～8, and chemically reactive mud obtains regenerating.Utilize the method for regeneration chemically reactive sludge treatment sanitary sewage to be achieved in that (one) sanitary sewage enters into mixing pit, to wherein adding chemical agent; (2) sewage with react through reaction tank after chemical agent mixes; (3) can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank, add regeneration chemically reactive mud at the reaction tank leading portion in (two) process.The sedimentary material that obtains in (three) process in the domestic sewage processing method of the present invention can be proceeded activation, manipulation of regeneration.Chemically reactive mud is meant and contains iron ion or aluminum ion etc. in the active sludge system among the present invention, it is present in the system of active sludge (microorganism etc.), what have passes through bound in various forms with the active sludge surface, what have is present in the solution system, with sewage in colloid, organism etc. when having an effect by the performance system in highly effective reaction, adsorption activity and the synergy of high-valence cationic, active sludge, help strengthening removal effect greatly, and can save the consumption of coagulating agent in a large number dissolved organic matter.The used chemically reactive mud of the present invention has good effect to the removal of sewage, and the clearance of turbidity, UV254, COD is respectively about 70%, 50%, 55%.Chemical enhanced processing and chemically reactive mud synergy are having great advantage aspect intensifying treatment effect, saving pharmaceutical quantities and the minimizing sludge yield, when iron(ic) chloride dosage when being 5mg/L (in iron) with chemically reactive mud 200～300ml mud/L sewage synergy, the reinforcement clearance of turbidity, UV254, COD improved 6.0%, 9.0%, more than 10.0%.When iron(ic) chloride dosage is 10mg/L (in iron) and activated sludge 200～300ml/L synergy, it is 90.0% that turbidity is strengthened clearance, it is more than 75.0% that COD strengthens clearance, and corresponding reinforcement clearance is respectively about 70% and 45～50% when not having chemically reactive mud synergy.
Embodiment:
Embodiment one: the chemically reactive mud of present embodiment obtains according to following method: a, sanitary sewage enter into mixing pit, add 2～100mg/L chemical agent in mixing pit; B, sewage and react through reaction tank after chemical agent mixes can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; C, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 5～30 days, and dissolved oxygen content is 2～5mg/L, and the pH value adjusts to 4～8, obtains chemically reactive mud.Described chemical agent is aluminium salt or molysite.
Embodiment two: utilize the method for chemically reactive mud intensive treatment sanitary sewage to be achieved in that (one) sanitary sewage enters into mixing pit in the present embodiment, to wherein adding chemical agent; (2) sewage with react through reaction tank after chemical agent mixes; (3) can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank, add chemically reactive mud at the reaction tank leading portion in (two) process.The dosage of chemical agent is 0.2～50mg/L (in aluminium salt or a molysite) in described (one) process.The time that adds of chemically reactive mud is for adding behind the chemical agent 0～1200 second.Described chemical agent is aluminium salt or molysite.The dosage of described chemically reactive mud is 100～500ml mud/L sewage.Present embodiment can be united use with follow-up biological treatment or middle water technology.
Embodiment three: the regeneration chemically reactive mud of present embodiment carries out according to following step: a, sanitary sewage enter into mixing pit, add chemical agent in mixing pit; B, sewage and after chemical agent mixes through reaction tank, add chemically reactive mud at the reaction tank leading portion and react; C, can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; D, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 0.5～8 hour, and dissolved oxygen content is 2～5mg/L, and the pH value adjusts to 4～8, and chemically reactive mud obtains regenerating.Described chemical agent is aluminium salt or molysite.The dosage of described chemical agent is 2～100mg/L.The dosage of described chemically reactive mud is 100～500ml mud/L sewage (in an activatory mud liquid form).The time that adds of described chemically reactive mud is for adding behind the chemical agent 0～1200 second.
Embodiment four: utilize the method for regeneration chemically reactive mud intensive treatment sanitary sewage to be achieved in that (one) sanitary sewage enters into mixing pit in the present embodiment, to wherein adding chemical agent; (2) sewage with react through reaction tank after chemical agent mixes; (3) can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank, add regeneration chemically reactive mud at the reaction tank leading portion in (two) process.The dosage of chemical agent is 0.2～50mg/L (in aluminium salt or a molysite) in described (one) process.The time that adds of regeneration chemically reactive mud is for adding behind the chemical agent 0～1200 second.Described chemical agent is aluminium salt or molysite.The dosage of described regeneration chemically reactive mud is 100～500ml mud/L sewage.Present embodiment can be united use with follow-up biological treatment or middle water technology.
Embodiment five: present embodiment is like this sanitary sewage to be carried out chemical enhanced processing: one, preparation chemically reactive mud: a, sanitary sewage enter into mixing pit, add 10mg/L iron(ic) chloride (in iron) in mixing pit; B, sewage and react through reaction tank after chemical agent mixes can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; C, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 15 days, and dissolved oxygen content is 3～5mg/L, and the pH value adjusts to 6～7, obtains chemically reactive mud.Two, preparation regeneration chemically reactive mud: a, sanitary sewage enter into mixing pit, add 10mg/L iron(ic) chloride (in iron) in mixing pit; B, sewage and after chemical agent mixes through reaction tank, add chemically reactive mud at the reaction tank leading portion and react; C, can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; D, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 160 minutes, and dissolved oxygen content is 2～5mg/L, and the pH value is adjusted to about 7, and chemically reactive mud obtains regenerating.Three, intensive treatment sanitary sewage: sanitary sewage enters into mixing pit, in mixing pit, add 10mg/L iron(ic) chloride (in iron), added back 300 seconds at iron(ic) chloride, add 300ml mud/L regeneration effluent chemically reactive mud at the reaction tank leading portion, can carry out mud-water separation by settling tank by sedimentary mud what reaction produced.It is 90.0% that present embodiment is strengthened clearance to turbidity, and it is more than 75.0% that COD strengthens clearance, and corresponding reinforcement clearance is respectively about 70～80% and 45～50% when not having chemically reactive mud synergy.
Embodiment six: present embodiment is like this sanitary sewage to be carried out chemical enhanced processing: one, preparation chemically reactive mud: a, sanitary sewage are injected in the mixing pit, add 10mg/L Tai-Ace S 150 (in aluminium) in mixing pit; B, sewage and react through reaction tank after chemical agent mixes can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; C, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 15 days, and dissolved oxygen content is 3～5mg/L, and the pH value is adjusted to about 7, obtains chemically reactive mud.Two, preparation regeneration chemically reactive mud: a, sanitary sewage enter into mixing pit, add 10mg/L Tai-Ace S 150 (in aluminium) in mixing pit; B, sewage and after chemical agent mixes through reaction tank, add chemically reactive mud at the reaction tank leading portion and react; C, can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; D, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 150 minutes, and dissolved oxygen content is 3～5mg/L, and the pH value is adjusted to about 7.0, and chemically reactive mud obtains regenerating.Three, intensive treatment sanitary sewage: sanitary sewage enters into mixing pit, in mixing pit, add 10mg/L Tai-Ace S 150 (in aluminium), added back 300 seconds at Tai-Ace S 150, add 200ml mud/L regeneration effluent chemically reactive mud at the reaction tank leading portion, can carry out mud-water separation by settling tank by sedimentary mud what reaction produced.It is 95.0% that present embodiment is strengthened clearance to turbidity, and it is about 75.0% that COD strengthens clearance, and the reinforcement clearance of turbidity and COD has improved respectively about 10%, 20%.
Claims (10)
1, chemically reactive mud preparation method, it is characterized in that it obtains according to following method: a, sanitary sewage are injected in the mixing pit, add 2～100mg/L chemical agent in mixing pit; B, sewage and react through reaction tank after chemical agent mixes can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; C, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 5～30 days, and dissolved oxygen content is 2～5mg/L, and the pH value adjusts to 4～8, obtains chemically reactive mud.
2, chemically reactive mud preparation method according to claim 1 is characterized in that described chemical agent is aluminium salt or molysite.
3, utilize chemically reactive sludge treatment sanitary sewage method, it is handled according to following step: (one) sanitary sewage enters into mixing pit, to wherein adding chemical agent; (2) sewage with react through reaction tank after chemical agent mixes; (3) can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank, it is characterized in that adding chemically reactive mud at the reaction tank leading portion in (two) process.
4, the chemically reactive sludge treatment sanitary sewage method of utilizing according to claim 3, the dosage that it is characterized in that chemical agent in described (one) process is 0.2～50mg/L.
5, the chemically reactive sludge treatment sanitary sewage method of utilizing according to claim 3, the time that adds that it is characterized in that described regeneration chemically reactive mud, the dosage of chemically reactive mud was 100～500ml mud/L sewage in order to add behind the chemical agent 0～1200 second.
6, chemically reactive mud renovation process, it is characterized in that it carries out according to following step: a, sanitary sewage enter into mixing pit, add chemical agent in mixing pit; B, sewage and after chemical agent mixes through reaction tank, add chemically reactive mud at the reaction tank leading portion and react; C, can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank then; D, the precipitating sludge that obtains in the settling tank is carried out aeration, the control aeration time is 0.5～8 hour, and dissolved oxygen content is 2～5mg/L, and the pH value adjusts to 4～8, and chemically reactive mud obtains regenerating.
7, chemically reactive mud renovation process according to claim 6, the dosage that it is characterized in that described chemically reactive mud is 100～500ml mud/L sewage, the time that adds of chemically reactive mud is for adding behind the chemical agent 0～1200 second.
8, chemically reactive mud renovation process according to claim 6 is characterized in that described chemical agent is aluminium salt or molysite.
9, utilize regeneration chemically reactive sludge treatment sanitary sewage method, it is handled according to following step: (one) sanitary sewage enters into mixing pit, to wherein adding chemical agent; (2) sewage with react through reaction tank after chemical agent mixes; (3) can carry out mud-water separation by settling tank by sedimentary material with what produce in the reaction tank, it is characterized in that adding regeneration chemically reactive mud at the reaction tank leading portion in (two) process.
10, utilization regeneration chemically reactive sludge treatment sanitary sewage method according to claim 9, the dosage that it is characterized in that described regeneration chemically reactive mud is 100～500ml mud/L sewage, and the dosage of regeneration chemically reactive mud is 100～500ml mud/L sewage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410043982 CN1246235C (en) | 2004-10-26 | 2004-10-26 | Method for preparing chemical active sludge and processing domestic sewage using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410043982 CN1246235C (en) | 2004-10-26 | 2004-10-26 | Method for preparing chemical active sludge and processing domestic sewage using the same |
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| Publication Number | Publication Date |
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| CN1603257A true CN1603257A (en) | 2005-04-06 |
| CN1246235C CN1246235C (en) | 2006-03-22 |
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| CN 200410043982 Expired - Fee Related CN1246235C (en) | 2004-10-26 | 2004-10-26 | Method for preparing chemical active sludge and processing domestic sewage using the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693576B (en) * | 2009-10-22 | 2011-05-11 | 燕山大学 | Technology for rapidly treating domestic sewage discharged without residual mud by second-stage adsorption |
| CN102718312A (en) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | Preparation and regeneration methods of iron-based activated sludge and method for treating domestic sewage by regenerated iron-based activated sludge |
| CN102718379A (en) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | Method for manufacturing and regenerating iron-based activated sludge and method for treating low-concentration heavy-metal sewage by utilizing regenerated iron-based activated sludge |
| CN102730920A (en) * | 2012-07-14 | 2012-10-17 | 哈尔滨工业大学 | Preparation method of iron-based activated sludge and method for adsorbing heavy metals of cadmium, copper and/or lead in sewage by iron-based activated sludge |
-
2004
- 2004-10-26 CN CN 200410043982 patent/CN1246235C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693576B (en) * | 2009-10-22 | 2011-05-11 | 燕山大学 | Technology for rapidly treating domestic sewage discharged without residual mud by second-stage adsorption |
| CN102718312A (en) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | Preparation and regeneration methods of iron-based activated sludge and method for treating domestic sewage by regenerated iron-based activated sludge |
| CN102718379A (en) * | 2012-07-14 | 2012-10-10 | 哈尔滨工业大学 | Method for manufacturing and regenerating iron-based activated sludge and method for treating low-concentration heavy-metal sewage by utilizing regenerated iron-based activated sludge |
| CN102730920A (en) * | 2012-07-14 | 2012-10-17 | 哈尔滨工业大学 | Preparation method of iron-based activated sludge and method for adsorbing heavy metals of cadmium, copper and/or lead in sewage by iron-based activated sludge |
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| Publication number | Publication date |
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| CN1246235C (en) | 2006-03-22 |
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