CN102964022A - Treatment method of sludge drying generated sewage - Google Patents
Treatment method of sludge drying generated sewage Download PDFInfo
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- CN102964022A CN102964022A CN2012102534432A CN201210253443A CN102964022A CN 102964022 A CN102964022 A CN 102964022A CN 2012102534432 A CN2012102534432 A CN 2012102534432A CN 201210253443 A CN201210253443 A CN 201210253443A CN 102964022 A CN102964022 A CN 102964022A
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- 239000010865 sewage Substances 0.000 title claims abstract description 87
- 239000010802 sludge Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000001035 drying Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003513 alkali Substances 0.000 claims abstract description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 4
- 230000033228 biological regulation Effects 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 238000006757 chemical reactions by type Methods 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 238000006213 oxygenation reaction Methods 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 3
- 238000003809 water extraction Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000012476 oxidizable substance Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a treatment method of sludge drying generated sewage. The method includes: the sewage generated in a sludge drying process passes through a grating ditch to filter out bulk impurities and enters a raw water hoisting shaft, the sewage is pumped into a pH adjusting pool and mixed with an alkali solution to undergo a neutralization reaction, and then enters a water quality regulating pool, which oxygenates the sewage in advance while regulating the water amount; the sewage then enters a floating oil machine to perform air floatation deoiling, and then enters a contact oxidation pool to undergo aerobic biochemical treatment; the sewage then enters a sedimentation pool from its bottom, the gravity sedimentated sewage flows out from the top and enters a denitrification pool, and the sedimentated sludge is transferred to a sludge storage pool; and the denitrified sewage enters an MBR reactor to further remove oxidizable substances and part of ammonia nitrogen, other sludge is transferred into the sludge storage pool, the sewage enters an ozone contact jar to undergo disinfection and oxidation decoloration, and the obtained clear water enters a clear water pool for storage. The invention has the advantages of: automatic control, convenient operation and management; small equipment floor space, and flexible system installation and construction; and strong adaptability.
Description
Technical field
The present invention relates to a kind for the treatment of process of sewage, refer to especially the treatment process of the sewage that a kind of sludge drying produces.
Background technology
At present the treatment process of sanitary sewage is quite ripe, and its core technology is activated sludge process and biomembrance process, and improvement and the development of activated sludge process (or biomembrance process) formed various domestic sewage treatment process.Typical sanitary sewage disposal complete process is as follows:
Sewage---pre-treatment---biochemical process---second pond---sterilization---water outlet---sludge treating system
Pre-treatment is also referred to as preconditioning technique, and commonly used have grid or graticule mesh, equalizing tank, settling pit, preliminary sedimentation tank etc.Because the core of sanitary sewage disposal is biochemical part, so we claim that sewage treatment process is to refer in particular to this part, such as contact oxidation method, SBR method, A/O method etc.Processing sanitary sewage with biochemical process (comprising anaerobic and aerobic) is most economical, the most applicable sewage treatment process at present, selects different sewage treatment process that investment and running cost are had conclusive impact according to the water yield, water quality and the on-the-spot condition of sanitary sewage.
The COD of sewage fluctuation large (not waiting to up to ten thousand from hundreds of) that sludge drying produces, sewage mineral oil in fluid, pH, temperature also are subjected to the impact of sludge drying mode and mud self proterties simultaneously.For the project that adopts the cement mill waste heat to carry out mummification, there is again the impact of other factors such as cement kiln maintenance and manufacture of cement, the sewage water yield also can occur than great fluctuation process.The processing of the sewage that sludge drying produces is compared with traditional sanitary sewage, industrial sewage has its specificity, and it is very important therefore selecting suitable Sewage disposal scheme.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind for the treatment of process of sewage of sludge drying generation, it organically combines the membrane separation technique in the separation engineering and traditional wastewater biologic treating technique, has greatly improved solid-liquid separation efficiency, finally reaches the industrial cycle water quality standard.This programme adopts the technique of catalytic oxidation+MBR, catalytic oxidation is stronger to the adaptability of water impact load and organic concentration impact load, treatment time is short, processing efficiency is high, floor space is little, simultaneously contact oxidation method can discontinuous running, has than strong adaptability for the sludge drying system of unsteady running.The large impact of COD of sewage fluctuation that produced by sludge drying, when COD continued higher level, only catalytic oxidation was processed, and water outlet can not reach national industrial cycle water quality standard, and is relatively poor for the removal effect of ammonia nitrogen.Water outlet can be up to standard after the coupling MBR technique, and the MBR floor space is little simultaneously, and the excess sludge generation is few.Therefore the disposal facility floor space is little, and the obvious processing effect of the sewage that produces for sludge drying simultaneously sludge drying system is had good adaptability, and convenient operation and management is easy to realize automatic control.
The objective of the invention is to realize that by following technical scheme it may further comprise the steps:
(1) sewage of mud drying process generation enters former water extraction gug after the grid canal filters out the bulk foreign material, sewage is through being pumped to the pH regulator pond, sewage pH on-line monitoring, adopt reaction type automatically to control, when pH presents acidity, sodium hydroxide solution injects the pH regulator pond automatically in the alkali tank, and alkali lye and sewage carry out neutralization reaction through the air blast mixing from contact-oxidation pool in equalizing tank, and pH is controlled at 7～7.5 through overregulating;
(2) enter the water quality regulation pond through the sewage behind the pH regulator, sewage mixes in the water quality regulation pond, the water quality regulation pond is regulated the follow-up sewage disposal water yield and (is not stored in the pond when reaching liquid level line, flow out when reaching liquid level line), by gas blower air blast in the water quality regulation pond, sewage in the water quality regulation pond is carried out oxygenation in advance simultaneously; Make in the water quality regulation pond sewage quality even.
(3) enter the oil slick machine through the sewage after water quality regulation pond regulating water quality and the water yield by hair filter, by the air supporting de-oiling, sewage enters interchanger and is cooled to below 35 ℃ after the de-oiling, enters contact-oxidation pool again, carries out continuous aerobic biochemical in contact-oxidation pool;
(4) sewage that flows out in the contact-oxidation pool enters settling tank from the settling tank bottom, and the sewage behind gravitational settling is flowed out by the top, enters denitrification tank again and removes most of the nitrogen and phosphorus through denitrification, and the mud that settling tank is collected then is transferred to mud storage pool;
(5) sewage through denitrogenation enters the MBR reactor, further remove oxidizability material and part ammonia nitrogen in the water, simultaneously muddy water is separated, the part sludge reflux is to denitrification tank, other mud is transferred to mud storage pool, and sewage then enters the ozone contact tank and carries out disinfection and oxidative decoloration;
(6) out clear water reaches the industrial cycle water quality standard in the ozone contact tank, stores at clean water basin; This clear water part is as sludge drying workshop water, and a part is as dehydration workshop water.
(7) add PAC (polymerize aluminum chloride) and PAM (polyacrylamide) in the conditioning groove after the mixing from the mud of mud storage pool, carry out filter-press dehydration through mud, moisture percentage in sewage sludge about 80% after the press filtration is transported to mud and receives and to go to the sludge drying workshop behind the workshop and carry out drying and other treatment; Isolated sewage is got back to again the grid canal, and processes after the water outlet of sludge drying workshop mixes again.
Described interchanger is the two-stage interchanger, is made of ripple adapter interchanger and unit cooler interchanger.
Described contact-oxidation pool is divided into two of 1#, 2#.
Described MBR reactor is membrane bioreactor, is film in the ES type liquid in it.
Described mud is the track type mud.
Advantage of the present invention is:
1. effluent quality high-quality stable
Because the high efficiency separation effect of film, separating effect is much better than traditional settling tank, it is extremely limpid to process water outlet, suspended substance and turbidity are close to zero, bacterium and virus are significantly removed, effluent quality is better than the miscellaneous domestic water quality standard (CJ25.1-89) that the Ministry of Construction issues, and can be directly drinks municipal miscellaneous water and carries out reuse as non-.
Simultaneously, membrane sepn also makes microorganism be dammed fully in bio-reactor, so that can keep higher microorganism concn in the system, not only improved reaction unit the whole removing of pollutent has been removed efficient, guaranteed good effluent quality, the simultaneous reactions device has good adaptability to the various variations of influent load (water quality and the water yield), and anti impulsion load is strong, can stablize the effluent quality that obtains high-quality.
2. excess sludge production is few
This technique can be moved under high volumetric loading, low sludge loading, and excess sludge production low (can realize zero sludge discharge in theory) has reduced the sludge treatment expense.
3. floor space is little, occasion is not set limits
Can keep the microbial biomass of high density in the bio-reactor, the treatment unit volumetric loading is high, and floor space is saved greatly; This technical process is simple, compact construction, small accommodation area, the place is not set limits, and is suitable for any occasion, can make ground type, semi-underground type and underground type.
4. can remove ammonia nitrogen and hardly degraded organic substance
Because microorganism dammed in bio-reactor fully, thus the growth of holding back that is conducive to breed microorganism slowly such as nitrobacteria, and system's nitrification efficiency is improved.Simultaneously, can increase the hydraulic detention time of organism in system of some difficult degradations, be conducive to the raising of hardly degraded organic substance degradation efficiency.
5. convenient operation and management is easy to realize automatic control
This technique has realized separating fully of hydraulic detention time (HRT) and sludge retention time (SRT), operation control is more stable, be the new technology that realizes easily equipmentization in the sewage disposal, can realize microcomputer automatic control, thereby make operational administrative more convenient.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is the process flow sheet of the treatment process of the sewage that produces of sludge drying.
Embodiment
The treatment process of the sewage that the described a kind of sludge drying of present embodiment produces, technical process be as shown in drawings:
(1) sewage of mud drying process generation enters former water extraction gug after the grid canal filters out the bulk foreign material, sewage is through being pumped to the pH regulator pond, sewage pH on-line monitoring, adopt reaction type automatically to control, when pH presents acidity, sodium hydroxide solution injects the pH regulator pond automatically in the alkali tank, and alkali lye and sewage carry out neutralization reaction through the air blast mixing from contact-oxidation pool in equalizing tank, and pH is controlled at 7～7.5 through overregulating;
(2) enter the water quality regulation pond through the sewage behind the pH regulator, sewage mixes in the water quality regulation pond, the water quality regulation pond is regulated the follow-up sewage disposal water yield and (is not stored in the pond when reaching liquid level line, flow out when reaching liquid level line), by gas blower air blast in the water quality regulation pond, sewage in the water quality regulation pond is carried out oxygenation in advance simultaneously; Make in the water quality regulation pond sewage quality even.
(3) enter the oil slick machine through the sewage after water quality regulation pond regulating water quality and the water yield by hair filter, by the air supporting de-oiling, sewage enters interchanger and is cooled to below 35 ℃ after the de-oiling, enters contact-oxidation pool again, carries out continuous aerobic biochemical in contact-oxidation pool;
(4) sewage that flows out in the contact-oxidation pool enters settling tank from the settling tank bottom, and the sewage behind gravitational settling is flowed out by the top, enters denitrification tank again and removes most of the nitrogen and phosphorus through denitrification, and the mud that settling tank is collected then is transferred to mud storage pool;
(5) sewage through denitrogenation enters the MBR reactor, further remove oxidizability material and part ammonia nitrogen in the water, simultaneously muddy water is separated, the part sludge reflux is to denitrification tank, other mud is transferred to mud storage pool, and sewage then enters the ozone contact tank and carries out disinfection and oxidative decoloration;
(6) out clear water reaches the industrial cycle water quality standard in the ozone contact tank, stores at clean water basin; This clear water part is as sludge drying workshop water, and a part is as dehydration workshop water.
(7) add PAC (polymerize aluminum chloride) and PAM (polyacrylamide) in the conditioning groove after the mixing from the mud of mud storage pool, carry out filter-press dehydration through mud, moisture percentage in sewage sludge about 80% after the press filtration, being transported to mud receives and to go to the sludge drying workshop behind the workshop and carry out drying and other treatment, isolated sewage is got back to again the grid canal, and processes after the water outlet of sludge drying workshop mixes again.
In the present embodiment, described interchanger is the two-stage interchanger, is made of ripple adapter interchanger and unit cooler interchanger.
Described contact-oxidation pool is divided into two of 1#, 2#.
Described MBR reactor is membrane bioreactor, is film in the ES type liquid in it.
In the present embodiment, described mud is the track type mud.
Per-cents all among the present invention all are weight percentage.
Claims (5)
1. the treatment process of the sewage that produces of a sludge drying, it is characterized in that: it may further comprise the steps:
(1) sewage of mud drying process generation enters former water extraction gug after the grid canal filters out the bulk foreign material, sewage is through being pumped to the pH regulator pond, sewage pH on-line monitoring, adopt reaction type automatically to control, when pH presents acidity, sodium hydroxide solution injects the pH regulator pond automatically in the alkali tank, and alkali lye and sewage carry out neutralization reaction through the air blast mixing from contact-oxidation pool in equalizing tank, and pH is controlled at 7～7.5 through overregulating;
(2) enter the water quality regulation pond through the sewage behind the pH regulator, sewage mixes in the water quality regulation pond, the water quality regulation pond is regulated the follow-up sewage disposal water yield, by gas blower air blast in the water quality regulation pond, sewage in the water quality regulation pond is carried out oxygenation in advance simultaneously;
(3) enter the oil slick machine through the sewage after water quality regulation pond regulating water quality and the water yield by hair filter, by the air supporting de-oiling, sewage enters interchanger and is cooled to below 35 ℃ after the de-oiling, enters contact-oxidation pool again, carries out continuous aerobic biochemical in contact-oxidation pool;
(4) sewage that flows out in the contact-oxidation pool enters settling tank from the settling tank bottom, and the sewage behind gravitational settling is flowed out by the top, enters denitrification tank again and removes most of the nitrogen and phosphorus through denitrification, and the mud that settling tank is collected then is transferred to mud storage pool;
(5) sewage through denitrogenation enters the MBR reactor, further remove oxidizability material and part ammonia nitrogen in the water, simultaneously muddy water is separated, the part sludge reflux is to denitrification tank, other mud is transferred to mud storage pool, and sewage then enters the ozone contact tank and carries out disinfection and oxidative decoloration;
(6) out clear water reaches the industrial cycle water quality standard in the ozone contact tank, stores at clean water basin;
(7) add polymerize aluminum chloride and polyacrylamide and in the conditioning groove, mix from the mud of mud storage pool after, carry out filter-press dehydration through mud, moisture percentage in sewage sludge about 80% after the press filtration, being transported to mud receives and to go to the sludge drying workshop behind the workshop and carry out drying and other treatment, isolated sewage is got back to again the grid canal, and processes after the water outlet of sludge drying workshop mixes again.
2. the treatment process of the sewage that produces of sludge drying as claimed in claim 1, it is characterized in that: described interchanger is the two-stage interchanger, takes over interchanger and the unit cooler interchanger consists of by ripple.
3. the treatment process of the sewage that produces of sludge drying as claimed in claim 1, it is characterized in that: described contact-oxidation pool is divided into two of 1#, 2#.
4. the treatment process of the sewage that produces of sludge drying as claimed in claim 1, it is characterized in that: described MBR reactor is membrane bioreactor, is film in the ES type liquid in it.
5. the treatment process of the sewage that produces of sludge drying as claimed in claim 1, it is characterized in that: described mud is the track type mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210253443.2A CN102964022B (en) | 2012-07-23 | 2012-07-23 | Treatment method of sludge drying generated sewage |
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| CN201210253443.2A CN102964022B (en) | 2012-07-23 | 2012-07-23 | Treatment method of sludge drying generated sewage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641268A (en) * | 2013-05-29 | 2014-03-19 | 中钢集团武汉安全环保研究院有限公司 | Two-stage bioreactor device and technology for treating garbage leachate |
| CN105502840A (en) * | 2016-01-11 | 2016-04-20 | 煤科集团杭州环保研究院有限公司 | Sludge drying waste water treatment system and treatment process |
| CN107434297A (en) * | 2016-05-25 | 2017-12-05 | 应清界 | A kind of method using QTCNP PROCESS FOR TREATMENT sewage |
| CN109502923A (en) * | 2018-12-29 | 2019-03-22 | 苏州泥宝环境科技有限公司 | A kind of sludge anhydration burning waste water treatment process |
| CN109553266A (en) * | 2019-01-16 | 2019-04-02 | 无锡太湖水务有限公司 | A kind of method of cyanobacteria deep dehydration |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103641268A (en) * | 2013-05-29 | 2014-03-19 | 中钢集团武汉安全环保研究院有限公司 | Two-stage bioreactor device and technology for treating garbage leachate |
| CN103641268B (en) * | 2013-05-29 | 2015-12-23 | 中钢集团武汉安全环保研究院有限公司 | Two-stage biological reactor for treatment percolate instrument and supplies |
| CN105502840A (en) * | 2016-01-11 | 2016-04-20 | 煤科集团杭州环保研究院有限公司 | Sludge drying waste water treatment system and treatment process |
| CN107434297A (en) * | 2016-05-25 | 2017-12-05 | 应清界 | A kind of method using QTCNP PROCESS FOR TREATMENT sewage |
| CN109502923A (en) * | 2018-12-29 | 2019-03-22 | 苏州泥宝环境科技有限公司 | A kind of sludge anhydration burning waste water treatment process |
| CN109553266A (en) * | 2019-01-16 | 2019-04-02 | 无锡太湖水务有限公司 | A kind of method of cyanobacteria deep dehydration |
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| CN102964022B (en) | 2014-12-24 |
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Effective date of registration: 20161019 Address after: 102202 Beijing city Changping District Machi Town Beixiaoying village of Beijing cement factory Patentee after: Beijing Jinyu North Water Environmental Protection Science and technology limited company Address before: 102202 Beijing city Changping District Machi Town Beixiaoying Village East Patentee before: Beijing Cement Plant Co., Ltd. |