CN103693809A - Anaerobic biological treatment system for fruit juice wastewater - Google Patents
Anaerobic biological treatment system for fruit juice wastewater Download PDFInfo
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- CN103693809A CN103693809A CN201310684479.0A CN201310684479A CN103693809A CN 103693809 A CN103693809 A CN 103693809A CN 201310684479 A CN201310684479 A CN 201310684479A CN 103693809 A CN103693809 A CN 103693809A
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- fruit juice
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Abstract
The invention discloses an anaerobic biological treatment system for fruit juice wastewater. The anaerobic biological treatment system comprises a fruit juice wastewater adjusting pond, wherein the water outlet of the fruit juice wastewater adjusting pond is connected with the water inlet of an anaerobic reactor after being filtered through a screen, the water outlet of the anaerobic reactor is connected with the water inlet of the anaerobic reactor through a water reflowing pipe, the water outlet of the anaerobic reactor is connected with the water inlet of a PVA (Polyvinyl Acetate) oxidation pond, the water outlet of the PVA oxidation pond is connected with the water inlet of an activated sludge pond, the water outlet of the activated sludge pond is connected with the water inlet of a settling pond, the water outlet of the settling pond is connected with the water inlet of a filtering pond, water from the water outlet of the filtering pond is recycled by a workshop or discharged when reaching the standard, the sludge outlet of the settling pond is connected with the sludge inlet of the activated sludge pond through a sludge reflowing pipe, or the sludge is directly utilized. The anaerobic biological treatment system realizes that fruit juice wastewater is discharged when reaching the standard under the conditions of low cost, low sludge content and low energy consumption, and provides a technical basis and reference to design, debug and operation management of relevant projects.
Description
Technical field
The present invention relates to environmental engineering, technical field of water pollution control biological wastewater treatment technology, be specifically related to a kind of fruit juice wastewater anaerobic biological treatment.
Background technology
Current Chinese concentrated Succus Mali pumilae output has accounted for 70% of world's total amount of transactions, and fruit juice industry brings the income of tens billion of units every year to country.
Juice production enterprise is when making huge contribution for China's economic, and the environmental problem of bringing especially waste water pollution problem seems particularly outstanding.1 ton of raw material of the every processing of fruit juice source mill, generally can produce 3.8-10.5m
3waste water.Because the high organic loading of Fruit Juice-producing Wastewater and acid base concentration change, cause river ecosystem structural damage, crop yield and the quality of the ingesting of fish, growth and periphery have all been caused to serious impact.
Fruit juice processing industry developing history is more late, the research that the research of its wastewater treatment relatively lags behind and processes in other high concentrated organic wastewater such as beer, alcohol waste water.At present fruit juice factory wastewater treatment adopts take that aerobic energy consumption is high, mud amount large, water quality is difficult to the problems such as up to standard as main treatment process exists, and there is no the comparatively waste water treatment process technology of maturation.The processing of fruit juice wastewater generally adopts the way of traditional materialization+biochemical treatment, technique is copied other organic wastewater treatment process designs mostly, as adopt lime slurry neutralization to precipitate acidication one contact oxidation technology, CAST technique, inclined plate gas-liquid-solid separator UASB-bio-contact oxidation tandem process and UASB-EIC technology.Due to the special process of juice production and the own characteristic that reckons without fruit juice wastewater, much all in operation process, produced series of problems, treatment effect is generally undesirable.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of fruit juice wastewater anaerobic biological treatment, realize the qualified discharge under fruit juice wastewater low cost, low mud, less energy-consumption condition, for design, debugging and the operational management of correlation engineering provides technical basis and reference.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of fruit juice wastewater anaerobic biological treatment, comprise fruit juice wastewater equalizing tank, the water outlet of fruit juice wastewater equalizing tank is connected with the water inlet of anaerobic reactor after by screen filtration, between the water outlet of anaerobic reactor and water inlet, by water return line, connect, the water outlet of anaerobic reactor is connected with the water inlet of PVA oxidation pond, the water outlet of PVA oxidation pond is connected with the water inlet of activated sludge tank, the water outlet of activated sludge tank is connected with the water inlet of settling tank, the water outlet of settling tank is connected with the water inlet of filtering basin, water reuse production plant or the qualified discharge of the water outlet of filtering basin, the mud mouth of settling tank is connected by the mud inlet of mud return line and activated sludge tank, or directly carry out mud utilization.
Described fruit juice wastewater equalizing tank, PVA oxidation pond, activated sludge tank are all connected with acid-alkali accommodation device.
Described anaerobic reactor adopts tower high-load anaerobic bio-reactor, and water outlet is back to reactor waterwater entrance in a large number, by dilution influent concentration, reduces the demand of reactor to basicity, and control reflux ratio is 3:1.
Described PVA oxidation pond is the bio-oxidation pond of filling PVA spheroidal particle, and wherein PVA spherical particle diameters 4mm, is the porous medium in 20～40 microns, inner duct, and its inside and outside apposition growth is also full of microbial bacterial.
Advantage of the present invention:
(1) acid-alkali accommodation device and fruit juice wastewater equalizing tank are set, solve in juice production process because cleaning and sterilization production facility and each storage tank by nitric acid, hydrochloric acid, caustic soda, SYNTHETIC OPTICAL WHITNER etc. for several times every day, cause existing pH fluctuation large in fruit juice wastewater processing the danger that contains highly basic, strong acid impact.
(2) water outlet of tower high-load anaerobic bio-reactor is back to reactor waterwater entrance in a large number, by dilution influent concentration, reduce the demand of reactor to basicity, control reflux ratio is 3:1, makes anaerobic reactor under low basicity condition, process fruit juice wastewater high loading steady running.
(3) utilize that anaerobic waste water treatment technology running cost is low, the advantage such as save energy, sludge disposal are easy, adopt efficient anaerobe softening technology, prevent the accumulation of calcium in waste water, decompose adhesive, thereby solve the high unmanageable technical problem of fruit juice wastewater COD value, effectively process the organism in waste water.
(4) adopt the special high-specific surface area PVA of Φ 4mm spheroidal particle filling PVA oxidation pond, according to the high characterization of adsorption of PVA porous medium (20～40 microns, inner duct), its inside and outside apposition growth is also full of microbial bacterial, fruit juice wastewater when being rich in the PVA reaction tank of high concentration microorganism, improves waste water treatment efficiency greatly.
(5) the continuous operation result of whole system shows, fruit juice wastewater treatment process system volume load can reach 6.0kgCODm
-3d
-1, COD clearance is more than 90%.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to accompanying drawing, a kind of fruit juice wastewater anaerobic biological treatment, comprise fruit juice wastewater equalizing tank, the water outlet of fruit juice wastewater equalizing tank is connected with the water inlet of anaerobic reactor after by screen filtration, between the water outlet of anaerobic reactor and water inlet, by water return line, connect, the water outlet of anaerobic reactor is connected with the water inlet of PVA oxidation pond, the water outlet of PVA oxidation pond is connected with the water inlet of activated sludge tank, active sludge subtracts the water outlet of Rong Chi and the water inlet of settling tank is connected, the water outlet of settling tank is connected with the water inlet of filtering basin, water reuse production plant or the qualified discharge of the water outlet of filtering basin, the mud mouth of settling tank is connected by the mud inlet of mud return line and activated sludge tank, or directly carry out mud utilization.
Described fruit juice wastewater equalizing tank, PVA oxidation pond, activated sludge tank are all connected with acid-alkali accommodation device.
Described anaerobic reactor adopts tower high-load anaerobic bio-reactor, and water outlet is back to reactor waterwater entrance in a large number, by dilution influent concentration, reduces the demand of reactor to basicity, and control reflux ratio is 3:1.
Described PVA oxidation pond is the bio-oxidation pond of filling PVA spheroidal particle, and wherein PVA spherical particle diameters 4mm, is the porous medium in 20～40 microns, inner duct, has high characterization of adsorption, and its inside and outside apposition growth is also full of microbial bacterial.
Principle of work of the present invention is:
Fruit juice wastewater is from flowing into fruit juice wastewater equalizing tank (according to water-quality constituents and pH value, automatically regulate potential of hydrogen and rationally add the required nutrition of microorganism), fruit juice equalizing tank waste water is after screen filtration, with being pumped into tower high-load anaerobic reactor, carry out biological degradation removal 70%COD, waste water 75% after anaerobic reactor is processed is sent reactor waterwater entrance back to, dilution original fruit juice waste water, prevents the impact of fruit juice wastewater change of water quality on microorganism, effectively improves the stability of biological treatment.Anaerobic reactor exports other waste water inflows PVA oxidation pond and further carries out the softening processing of sewage microorganism, then flow into activated sludge tank and carry out aerobe processing, water after aerobic treatment flows into settling tank and carries out mud-water separation, mud large portion in bottom sends activated sludge tank back to, small portion excess sludge to be to be used as him, top clear water qualified discharge or according to the required reuse of practical situation after the filteration of filter tank.
For avoiding fruit juice wastewater impurity too much, reduce bioreactor for treatment waste water COD clearance, fruit juice wastewater selects to flow into anaerobic biological reactor behind screen filtration unit again.For preventing that fruit juice wastewater load and pH value fluctuation from, on microorganism adaptability and active impact, arranging fruit juice wastewater equalizing tank, automatically detect waste water pH value simultaneously and regulated.Along with the carrying out of wastewater treatment, can there is pH value fluctuation in PVA oxidation pond and activated sludge tank, and system arranges acid-alkali accommodation pond and automatically detects pH value and regulated.
Invention effect of the present invention:
Fruit juice wastewater needs to add basic agent as the acid organic waste water of low basicity and regulates water inlet pH before processing, reflux and reduce the demand of reactor to basicity by dilution influent concentration, control reflux ratio is 3:1, makes anaerobic reactor under low basicity condition, process fruit juice wastewater high loading steady running.
Adopt acidication to process fruit juice wastewater, with the raising gradually of volumetric loading, to fruit juice wastewater COD, BOD
5, T-N, T-P, TOC removal trend be that while improving load, clearance can decline to some extent, but along with the operation of reactor, clearance improves gradually.To BOD
5, COD and T-N removal effect better.
Fruit juice wastewater treatment system volumetric loading can reach 6.0kgCODm
-3d
-1, COD clearance is more than 90%.
Adopt native system to process fruit juice concentrate waste water, stable operation stage (influent COD, BOD
5, SS is respectively 5968mgL
-1, 2130mgL
-1, 1020mgL
-1, water outlet is respectively 131mgL
-1, 10.8mgL
-1, 50.2mgL
-1) COD, BOD
5, SS clearance be respectively 96%, 99.5% and 95.1%.Waste Water Treatment is processed waste water and can be discharged by stably reaching standard, reduces power consumption 70-80% simultaneously, and residue biological sludge quantity discharged is from ton fruit juice 220kg(moisture content 75%) be reduced to below 80kg.
Claims (4)
1. a fruit juice wastewater anaerobic biological treatment, comprise fruit juice wastewater equalizing tank, it is characterized in that: the water outlet of fruit juice wastewater equalizing tank is connected with the water inlet of anaerobic reactor after by screen filtration, between the water outlet of anaerobic reactor and water inlet, by water return line, connect, the water outlet of anaerobic reactor is connected with the water inlet of PVA oxidation pond, the water outlet of PVA oxidation pond is connected with the water inlet of activated sludge tank, the water outlet of activated sludge tank is connected with the water inlet of settling tank, the water outlet of settling tank is connected with the water inlet of filtering basin, water reuse production plant or the qualified discharge of the water outlet of filtering basin, the mud mouth of settling tank is connected by the mud inlet of mud return line and activated sludge tank, or directly carry out mud utilization.
2. a kind of fruit juice wastewater anaerobic biological treatment according to claim 1, is characterized in that: described fruit juice wastewater equalizing tank, PVA oxidation pond, activated sludge tank are all connected with acid-alkali accommodation device.
3. a kind of fruit juice wastewater anaerobic biological treatment according to claim 1, it is characterized in that: described anaerobic reactor adopts tower high-load anaerobic bio-reactor, water outlet is back to reactor waterwater entrance in a large number, by dilution influent concentration, reduce the demand of reactor to basicity, control reflux ratio is 3:1.
4. a kind of fruit juice wastewater anaerobic biological treatment according to claim 1, it is characterized in that: described PVA oxidation pond is the bio-oxidation pond of filling PVA spheroidal particle, PVA spherical particle diameters 4mm wherein, for the porous medium in 20～40 microns, inner duct, its inside and outside apposition growth is also full of microbial bacterial.
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| CN201310684479.0A CN103693809B (en) | 2013-12-13 | 2013-12-13 | Anaerobic biological treatment system for fruit juice wastewater |
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|---|---|---|---|
| CN201310684479.0A CN103693809B (en) | 2013-12-13 | 2013-12-13 | Anaerobic biological treatment system for fruit juice wastewater |
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| CN103693809A true CN103693809A (en) | 2014-04-02 |
| CN103693809B CN103693809B (en) | 2015-06-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254133A (en) * | 2015-11-16 | 2016-01-20 | 苏州南风优联环保工程有限公司 | Fruit juice wastewater treating process |
| CN111606524A (en) * | 2020-07-08 | 2020-09-01 | 福建新德福化工有限公司 | Chemical sewage treatment process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792880A (en) * | 2005-11-30 | 2006-06-28 | 宋乾武 | Tech. for treating waste water of fruit juice processing |
| CN201033757Y (en) * | 2007-03-30 | 2008-03-12 | 广州市浩蓝环保技术有限公司 | Sewage water treatment system for fruit juice waste water |
| CN103204591A (en) * | 2013-04-15 | 2013-07-17 | 杭州浙大易泰环境科技有限公司 | Microbiological treatment process for pectin wastewater |
-
2013
- 2013-12-13 CN CN201310684479.0A patent/CN103693809B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792880A (en) * | 2005-11-30 | 2006-06-28 | 宋乾武 | Tech. for treating waste water of fruit juice processing |
| CN201033757Y (en) * | 2007-03-30 | 2008-03-12 | 广州市浩蓝环保技术有限公司 | Sewage water treatment system for fruit juice waste water |
| CN103204591A (en) * | 2013-04-15 | 2013-07-17 | 杭州浙大易泰环境科技有限公司 | Microbiological treatment process for pectin wastewater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105254133A (en) * | 2015-11-16 | 2016-01-20 | 苏州南风优联环保工程有限公司 | Fruit juice wastewater treating process |
| CN111606524A (en) * | 2020-07-08 | 2020-09-01 | 福建新德福化工有限公司 | Chemical sewage treatment process |
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| Publication number | Publication date |
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| CN103693809B (en) | 2015-06-03 |
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