CN102010100A - Technology and device for advanced treatment flow of industrially comprehensive wastewater - Google Patents
Technology and device for advanced treatment flow of industrially comprehensive wastewater Download PDFInfo
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- CN102010100A CN102010100A CN 201010532312 CN201010532312A CN102010100A CN 102010100 A CN102010100 A CN 102010100A CN 201010532312 CN201010532312 CN 201010532312 CN 201010532312 A CN201010532312 A CN 201010532312A CN 102010100 A CN102010100 A CN 102010100A
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Abstract
The invention relates to a technology and a device for advanced treatment flow of industrially comprehensive wastewater, belonging to the field of treatment and recycling of industrially comprehensive wastewater and municipal sewage. Raw waters from an industrially comprehensive sewage treatment plant enters into a flocculating tank, a floatation tank, a hydrolysis sedimentation basin, a denitrification DN tank, an oxidation and nitration CN tank and a nitration N tank in sequence, wherein effluents of the nitration N tank are discharged to a receiving waterbody by the discharging tube of the N tank; and nitrified reflux in the discharging tube of the N tank returns to the discharging tube of the hydrolysis sedimentation basin by a return pipe and then enters into the denitrification DN tank with effluents in the hydrolysis sedimentation basin. By carrying out advanced treatment, the technology and the device provided by the invention can be used for treating high fuel, high viscous slag, high suspended matters, COD, SS, NH3-N, phosphorus, nitrogen and other nitrogen effectively, thus the effluents can meet primary level A discharge standard in China.
Description
Technical field
The present invention relates to a kind of water technology and device, particularly a kind of industrial comprehensive wastewater advanced treatment full-flow process and device thereof belong to industrial comprehensive wastewater and municipal sewage treatment and resource utilization field.
Background technology
The industry comprehensive wastewater has characteristics such as high oil, high dry slag, high suspended matter, and the organic contamination substrate concentration is higher in the waste water, and variation water quality is bigger, and biodegradability is relatively poor, is the most unmanageable class waste water.At present, China has 65% municipal effluent unprocessed or handle and thoroughly just do not enter river, lake and ocean, wherein industrial comprehensive wastewater has caused serious pollution to water body, causes directly that the above water quality of III class only accounts for 29.5% in China's seven large watersheds, and bad V class water quality is up to 44%.
The treatment process of industry comprehensive wastewater roughly can reduce: the combination process of physical treatment method, chemical treatment method, physical chemistry treatment process and bioremediation and several method.Wherein, physical treatment method mainly comprises: adjusting, centrifugation, precipitation, filtration etc.; Chemical treatment method mainly comprises: neutralization, chemical precipitation, redox etc.; The physical chemistry treatment process mainly comprises: coagulation, air supporting, absorption, ion-exchange, membrane sepn etc.; Bioremediation mainly comprises: aerobe facture, anaerobic biological treatment method etc.Industry comprehensive wastewater composition is comparatively complicated, and any single treatment process all can't reach the purpose that purifies fully, uses the combination treatment method of kinds of processes usually.In various combination procesies, the application of physical chemistry treatment process and bioremediation combination is the most general.
At present, China is generally the second-stage treatment standard at the Sewage Plant of industrial comprehensive wastewater.According to " integrated wastewater discharge standard " requirement of up-to-date promulgation, the above sewage disposal plant effluent of city-level will reach country-level A emission standard, and this just requires the treatment process of Sewage Plant to need further to remove COD, SS and NH in the water on the one hand
3-N; Also need to increase the function of denitrogenation dephosphorizing on the other hand.
Summary of the invention
, difficult degradation big, be difficult for the characteristics of biochemical treatment, the present invention proposes a kind of industrial comprehensive wastewater advanced treatment full-flow process and device thereof at industrial comprehensive wastewater Pollutant levels height, variation water quality.
At first, aspect pre-treatment, use coagulation-pneumatically supported mode that the high oil in the industrial comprehensive wastewater, high dry slag and high suspended matter are effectively removed.Influences such as the greasy dirt of higher concentration in the waste water, one side can result in blockage to follow-up biochemical treatment can increase extra sludge yield, on the other hand so need remove at pretreatment stage.The colloidal solid great majority of industry in the comprehensive wastewater have negative charge, can make colloidal solid unstability in the sewage by adding the high-valence cationic coagulating agent, and coacervating large particle is also removed.When the foam residues that coagulation forms in coagulation process in conjunction with air-float technology is removed, greasy dirt is carried removal by microbubble.Also comprise the acidication unit at pretreatment unit, the macromole in the trade effluent, hardly degraded organic substance are hydrolyzed, improve the biodegradability of sewage, make it help follow-up biochemical treatment.
In the second-stage treatment stage, use biological aerated filter process that organism and ammonia nitrogen are removed.Compare with activated sludge process, BAF has following characteristics: the structures floor space is little; Semiclosed or totally-enclosed structures, temperature influence is less; Flora is rational in infrastructure, forms different dominant populations along water (flow) direction, has long food chain; Have higher biological concentration and the organic loading of Geng Gao; The shock-resistant ability in filter tank is strong, and is responsive unlike activated sludge process to organic loading, hydraulic load, variation of temperature, do not have sludge bulking and takes place.These characteristics have certain advantage for the bigger Industrial Wastewater Treatment of variation water quality.
Aspect advanced treatment, used the Prepositive denitrification technology of economical and energy saving, technology maturation in conjunction with BAF.Organism in this process makes full use sewage is a carbon source, and the total nitrogen in the water is removed, and the characteristics that need not additional carbon have been saved lot of running cost.Because the total phosphorus concentration in the industrial comprehensive wastewater is not high, select result of use significantly, implement chemical dephosphorization technology easily, and finish jointly in pretreated coagulation unit.
To sum up, formed the full-flow process of the industrial comprehensive wastewater advanced treatment of chemical dephosphorization+oil removal by air bubbling+acidication+pre-denitrification biological aerated filter, by the optimization to operating parameter, its water outlet reaches country-level A emission standard.
Technical scheme of the present invention is as follows:
A kind of industrial comprehensive wastewater advanced treatment full-flow process is characterized in that:
The former water of industry composite wastewater treatment plant enters flocculation basin by water inlet pipe, and by coagulant dosage pipe dosing coagulant bodied ferric sulfate, former water mixes stirring with coagulating agent in flocculation basin simultaneously; After flocculation, the impurity particle in the water, suspended solid take off steady polymerization, form wadding burl zoarium, flow into air flotation pool by the flocculation basin rising pipe, in air flotation pool, flco and greasy dirt rise to the scum silica frost outlet with microbubble and discharge, and former water has carried out preliminary pre-treatment;
The air supporting water outlet enters hydrolytic precipitation pool through the air flotation pool rising pipe, splendid attire anaerobic sludge in the hydrolytic precipitation pool, water inlet is injected from the bottom, suspended solid is held back and is discharged from mud discharging mouth through sludge blanket in the water, macromole, hardly degraded organic substance are hydrolyzed to the organism that more easily carries out biochemical treatment, and water quality is further purified;
The water outlet of hydrolytic precipitation pool enters denitrification DN pond through the hydrolytic precipitation pool rising pipe, and denitrifying bacterium is removed inferior nitrogen in the water and nitre nitrogen with the form of nitrogen; The water outlet in denitrification DN pond enters the nitrated CN of oxidation pond by DN pond rising pipe, and the aerobic heterotrophic bacterium in the nitrated CN of the oxidation pond is removed the organism in the water; The water outlet in the nitrated CN of oxidation pond enters nitrated N pond by CN pond rising pipe, and the nitrifier in the nitrated N pond is converted into the form of nitre nitrogen to the ammonia nitrogen in the water; The water outlet in nitrated N pond drains into receiving water body by N pond rising pipe, and simultaneously the nitrated phegma in the rising pipe of N pond is back to the hydrolytic precipitation pool rising pipe by return line, together enters denitrification DN pond with the water outlet of hydrolytic precipitation pool.Finally, sewage has been finished advanced treatment, and water outlet reaches country-level A emission standard.
A kind of device that is used to realize above-mentioned industrial comprehensive wastewater advanced treatment full-flow process, it is characterized in that: described device is by flocculation basin, air flotation pool, hydrolytic precipitation pool, denitrification DN pond, and the nitrated CN of oxidation pond, nitrated N pond, water inlet pipe, coagulant dosage pipe, flocculation basin rising pipe, air flotation pool rising pipe, hydrolytic precipitation pool rising pipe, DN pond rising pipe, CN pond rising pipe, scum silica frost outlet, mud discharging mouth, return line and N pond rising pipe are formed; Water inlet pipe connects flocculation basin, be connected with the flocculation basin rising pipe between flocculation basin and the air flotation pool, be connected with the air flotation pool rising pipe between air flotation pool and the hydrolytic precipitation pool, be connected with the hydrolytic precipitation pool rising pipe between hydrolytic precipitation pool and the denitrification DN pond, the nitrated CN of denitrification DN pond and oxidation is connected with DN pond rising pipe between the pond, be connected with CN pond rising pipe between oxidation nitrated CN pond and the nitrated N pond, be connected with N pond rising pipe between nitrated N pond and the receiving water body; The coagulant dosage pipe links to each other with water inlet pipe, and air flotation pool is provided with the scum silica frost outlet, and hydrolytic precipitation pool is provided with mud discharging mouth; Be connected with return line between N pond rising pipe and the settling tank rising pipe.
Adopt technology of the present invention and device can effectively handle materials such as the high oil in the industrial comprehensive wastewater, high dry slag and high suspended matter, and treating processes is simple, over-all properties is higher, by advanced treatment, and can be to the COD in the water, SS, NH
3-N and phosphorus, nitrogen etc. are effectively removed, and make water outlet reach country-level A emission standard.
Description of drawings
Fig. 1 is a process schematic representation of the present invention.
Among the figure: 1. flocculation basin, 2. air flotation pool, 3. hydrolytic precipitation pool, 4. denitrification DN pond, the 5. nitrated CN of oxidation pond, 6. nitrated N pond, 7. water inlet pipe, 8. coagulant dosage pipe, 9. flocculation basin rising pipe, 10. air flotation pool rising pipe, 11. hydrolytic precipitation pool rising pipes, 12.DN pond rising pipe, 13.CN pond rising pipe, the outlet of 14. scum silica frost, 15. mud discharging mouths, 16. return lines, 17.N pond rising pipe.
Embodiment
Industry composite wastewater water-quality guideline and one-level A emission standard are as shown in table 1.
As shown in Figure 1, industrial comprehensive wastewater advanced treatment full-flow process of the present invention and device thereof, its idiographic flow, operating parameters and connection setting are described below:
The former water of industry composite wastewater treatment plant enters flocculation basin 1 by water inlet pipe 7, simultaneously by coagulant dosage pipe 8 dosing coagulant bodied ferric sulfates, requiring dosage according to the water outlet total phosphorus concentration is 40mg/L, former water mixes stirring with coagulating agent in flocculation basin, reaction time is 15min.After flocculation, the impurity particle in the water, suspended solid etc. take off steady polymerization, form wadding burl zoarium, flow into air flotation pool 2 by flocculation basin rising pipe 9, and air flotation pool 2 uses the molten gas of gas-liquid mixing pump, and dissolved-air pressure is 3.5kg/cm
2, reflux ratio is 50%.In air flotation pool 2, flco and greasy dirt rise to scum silica frost outlet 14 with microbubble and discharge.The air supporting water outlet enters hydrolytic precipitation pool 3 through air flotation pool rising pipe 10, splendid attire anaerobic sludge in the hydrolytic precipitation pool, water inlet is injected from the bottom, suspended solid is held back and is discharged from mud discharging mouth 15 through sludge blanket in the water, macromole, hardly degraded organic substance are hydrolyzed to the organism that more easily carries out biochemical treatment, and hydraulic detention time is 2.0h.The water outlet of hydrolytic precipitation pool 3 enters denitrification DN pond 4 through rising pipe 11, and the hydraulic detention time in denitrification DN pond 4 is 45min, and denitrifying bacterium is removed the total nitrogen in the water with the form of nitrogen.The water outlet in denitrification DN pond 4 enters the nitrated CN of oxidation pond 5 by DN pond rising pipe 12, and the aerobic heterotrophic bacterium in the nitrated CN of the oxidation pond 5 is removed the organism in the water, and for keeping the growth of aerobic microbiological, the feeding aeration rate is 0.8m
3The air of/h.The water outlet in the nitrated CN of oxidation pond 5 enters nitrated N pond 6 by CN pond rising pipe 13, and the nitrifier in the nitrated N pond 6 is converted into the form of nitre nitrogen to the ammonia nitrogen in the water, and for keeping the growth of nitrifier, the feeding aeration rate is 0.6m
3The air of/h, the hydraulic detention time in the nitrated CN of oxidation pond 5 and nitrated N pond 6 is 45min.The water outlet in nitrated N pond 6 drains into receiving water body by N pond rising pipe 17, nitrated phegma in the N pond rising pipe 17 is back to hydrolytic precipitation pool rising pipe 11 by return line 16 simultaneously, together enter denitrification DN pond 4 with the water outlet of hydrolytic precipitation pool 3, its reflux ratio is 150%.
Wherein, the device that is used for above-mentioned industrial comprehensive wastewater advanced treatment full-flow process is by flocculation basin 1, air flotation pool 2, hydrolytic precipitation pool 3, denitrification DN pond 4, and the nitrated CN of oxidation pond 5, nitrated N pond 6, water inlet pipe 7, coagulant dosage pipe 8, flocculation basin rising pipe 9, air flotation pool rising pipe 10, hydrolytic precipitation pool rising pipe 11, DN pond rising pipe 12, CN pond rising pipe 13, scum silica frost outlet 14, mud discharging mouth 15, return line 16 and N pond rising pipe 17 are formed; Water inlet pipe 7 connects flocculation basin 1, be connected with flocculation basin rising pipe 9 between flocculation basin 1 and the air flotation pool 2, be connected with air flotation pool rising pipe 10 between air flotation pool 2 and the hydrolytic precipitation pool 3, be connected with hydrolytic precipitation pool rising pipe 11 between hydrolytic precipitation pool 3 and the denitrification DN pond 4, be connected with DN pond rising pipe 12 between denitrification DN pond 4 and the nitrated CN of the oxidation pond 5, be connected with CN pond rising pipe 13 between the nitrated CN of oxidation pond 5 and the nitrated N pond 6, be connected with N pond rising pipe 17 between nitrated N pond 6 and the receiving water body; Coagulant dosage pipe 8 links to each other with water inlet pipe 7, and air flotation pool 2 is provided with scum silica frost outlet 14, and hydrolytic precipitation pool 3 is provided with mud discharging mouth 15; Be connected with return line 16 between N pond rising pipe 17 and the settling tank rising pipe 11.
Table 1 (mg/L of unit)
Claims (2)
1. industrial comprehensive wastewater advanced treatment full-flow process is characterized in that:
The former water of industry composite wastewater treatment plant enters flocculation basin (1) by water inlet pipe (7), and simultaneously by coagulant dosage pipe (8) dosing coagulant bodied ferric sulfate, former water mixes stirring with coagulating agent in flocculation basin (1); After flocculation, the impurity particle in the water, suspended solid take off steady polymerization, form wadding burl zoarium, flow into air flotation pool (2) by flocculation basin rising pipe (9), and in air flotation pool (2), flco and greasy dirt rise to scum silica frost outlet (14) with microbubble and discharge;
The air supporting water outlet enters hydrolytic precipitation pool (3) through air flotation pool rising pipe (10), splendid attire anaerobic sludge in the hydrolytic precipitation pool (3), water inlet is injected from the bottom, suspended solid is held back and is discharged from mud discharging mouth (15) through sludge blanket in the water, and macromole, hardly degraded organic substance are hydrolyzed to the organism that more easily carries out biochemical treatment;
The water outlet of hydrolytic precipitation pool (3) enters denitrification DN pond (4) through hydrolytic precipitation pool rising pipe (11), and denitrifying bacterium is removed inferior nitrogen in the water and nitre nitrogen with the form of nitrogen; The water outlet in denitrification DN pond (4) enters the nitrated CN of oxidation pond (5) by DN pond rising pipe (12), and the aerobic heterotrophic bacterium in the nitrated CN of the oxidation pond (5) is removed the organism in the water; The water outlet in the nitrated CN of oxidation pond (5) enters nitrated N pond (6) by CN pond rising pipe (13), and the nitrifier in the nitrated N pond (6) is converted into the form of nitre nitrogen to the ammonia nitrogen in the water; The water outlet in nitrated N pond (6) drains into receiving water body by N pond rising pipe (17), simultaneously the nitrated phegma in the N pond rising pipe (17) is back to hydrolytic precipitation pool rising pipe (11) by return line (16), together enters denitrification DN pond (4) with the water outlet of hydrolytic precipitation pool (3).
2. device that is used to realize the described industrial comprehensive wastewater advanced treatment full-flow process of claim 1, it is characterized in that: described device is by flocculation basin (1), air flotation pool (2), hydrolytic precipitation pool (3), denitrification DN pond (4), the nitrated CN of oxidation pond (5), nitrated N pond (6), water inlet pipe (7), coagulant dosage pipe (8), flocculation basin rising pipe (9), air flotation pool rising pipe (10), hydrolytic precipitation pool rising pipe (11), DN pond rising pipe (12), CN pond rising pipe (13), scum silica frost outlet (14), mud discharging mouth (15), return line (16) and N pond rising pipe (17) are formed; Water inlet pipe (7) connects flocculation basin (1), be connected with flocculation basin rising pipe (9) between flocculation basin (1) and the air flotation pool (2), be connected with air flotation pool rising pipe (10) between air flotation pool (2) and the hydrolytic precipitation pool (3), be connected with hydrolytic precipitation pool rising pipe (11) between hydrolytic precipitation pool (3) and the denitrification DN pond (4), be connected with DN pond rising pipe (12) between denitrification DN pond (4) and the nitrated CN of the oxidation pond (5), be connected with CN pond rising pipe (13) between the nitrated CN of oxidation pond (5) and the nitrated N pond (6), be connected with N pond rising pipe (17) between nitrated N pond (6) and the receiving water body; Coagulant dosage pipe (8) links to each other with water inlet pipe (7), and air flotation pool (2) is provided with scum silica frost outlet (14), and hydrolytic precipitation pool (3) is provided with mud discharging mouth (15); Be connected with return line (16) between N pond rising pipe (17) and the settling tank rising pipe (11).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583829A (en) * | 2012-03-03 | 2012-07-18 | 王志勇 | Multifunctional flocculation and oscillation experiment device |
| CN102964037A (en) * | 2012-12-07 | 2013-03-13 | 北京翰祺环境技术有限公司 | Novel sewage treatment method by combined utilization of light filter material biological aerated filter and heavy filter material biological aerated filter |
| CN107324561A (en) * | 2017-08-30 | 2017-11-07 | 丹阳市百盛电器有限公司 | A kind of plasma water treatment device and method for treating water of simple Coal Tar Wastewater |
| CN115259550A (en) * | 2022-07-19 | 2022-11-01 | 广西糖业集团防城精制糖有限公司 | Comprehensive treatment method for refined sugar waste brine |
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| CN1579968A (en) * | 2004-05-19 | 2005-02-16 | 天津大学 | Integrated treating process of waste water extracted from gas well for reaching effluent standard |
| CN101318758A (en) * | 2008-05-16 | 2008-12-10 | 北京工业大学 | Air-float and bio-filter combined water treatment process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583829A (en) * | 2012-03-03 | 2012-07-18 | 王志勇 | Multifunctional flocculation and oscillation experiment device |
| CN102964037A (en) * | 2012-12-07 | 2013-03-13 | 北京翰祺环境技术有限公司 | Novel sewage treatment method by combined utilization of light filter material biological aerated filter and heavy filter material biological aerated filter |
| CN107324561A (en) * | 2017-08-30 | 2017-11-07 | 丹阳市百盛电器有限公司 | A kind of plasma water treatment device and method for treating water of simple Coal Tar Wastewater |
| CN115259550A (en) * | 2022-07-19 | 2022-11-01 | 广西糖业集团防城精制糖有限公司 | Comprehensive treatment method for refined sugar waste brine |
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