CN104086051A - Minced fish processing wastewater treatment method - Google Patents
Minced fish processing wastewater treatment method Download PDFInfo
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- CN104086051A CN104086051A CN201410359449.7A CN201410359449A CN104086051A CN 104086051 A CN104086051 A CN 104086051A CN 201410359449 A CN201410359449 A CN 201410359449A CN 104086051 A CN104086051 A CN 104086051A
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Abstract
The invention discloses a minced fish processing wastewater treatment method. According to the method, other valuable substances generated in a minced fish processing process are reprocessed and utilized by adopting condensation and recovery to generate a certain economic benefit; moreover, a low-cost ABR treatment mode is adopted, so that the cost is greatly reduced. Therefore, the method has a certain development and utilization economy value and meets production requirements of enterprises.
Description
Technical field
The present invention relates to field of waste water treatment, be specifically related to the rotten processing wastewater treatment method of a kind of fish.
Background technology
Gefillte fish is the product that the flesh of fish is made through adopting meat, rinsing, arena and bursting, mix the operations such as filling, moulding, shortening.Gefillte fish does not have fishy smell, full of elasticity, unique flavor, nutritious and low price, liked by masses.Yet the waste water of the rotten processing discharge of fish contains a large amount of water-soluble proteins, and COD is high.At present, the treatment process of the rotten processing waste water of fish still only adopts traditional A/ O technique, effluent quality is difficult to reach < < integrated wastewater discharge standard > > (GB 8978-1996) primary standard, and processing cost is very high.
Summary of the invention
The invention provides the rotten processing wastewater treatment method of fish, the material that this method of wastewater treatment adopts cohesion to reclaim other that produce in the rotten course of processing of fish are rich in to value is processing and utilization again, produces certain economic benefit; And employing expends low ABR processing mode and greatly reduces costs, and makes the present invention have certain exploitation economic worth, meets the Production requirement of enterprise.
The technical scheme that the present invention adopted is for achieving the above object:
The rotten processing wastewater treatment method of fish, comprises following step:
(1) mechanical grille is removed taro, rotten piece remaining in waste water;
(2) fish protein is reclaimed in cohesion: adopt vertical sedimentation basin to carry out solid-liquid separation, be specially: add appropriate calcium chloride, accelerate after making to oppress dehydration hardening, remove the portion phosphate in waste water simultaneously; Add the addition of C aCl2, utilize troponin (thering is very strong calcium in conjunction with the energy) combination in Ca ion and the flesh of fish, make to oppress dehydration hardening, make it accelerate, also can remove the portion phosphate in waste water simultaneously.
(3) airfloat equipment is processed: after the waste water after coagulation and recovery is processed is put in equalizing tank, put into airfloat equipment district, in Bing Xiang airfloat equipment district, add polymerize aluminum chloride, liquid caustic soda and polyacrylamide medicament take regulate airfloat equipment to process after the pH value of water outlet be 7.8-8.2;
(4) ABR processes: adopt 4 lattice ABR, each upper and lower stream chamber volume ratio of front 3 lattice is 2.0-2.8:1.0, and the 4th lattice are installed the filler that can control sludge loss material, and now ABR processes rear water outlet pH value at 5.6-6.0;
(5) A/O biochemistry pool is processed: A pond denitrification rate constant is 0.03-0.04, and hydraulic detention time is controlled at 3.8-4.5h, and the pH value before adjusting after step processing is to 7.4-7.8; The mud BOD loading in O pond is 0.10-0.12kg/ (kg.d), and hydraulic detention time controls to 18-24h;
(6) process in heavy pond: second pond adopts vertical sedimentation basin, and centrifugal pump of horizontal axis returned sluge is installed, and makes sludge reflux in A pond and ABR;
(7) final deposition pool is processed: adopt inclined tube-type settling tank, and add suitable polymerize aluminum chloride and polyacrylamide and further remove the phosphoric acid salt in the water outlet on top, to regulate pH value to 7.0-7.2.
The peak flow of described grid is 80m
3/ h, nylon rake teeth spacing is 5mm, travelling speed 2m/min.
In cohesion recycling step, adjust waste water ph at 4.5-5.0.
Described O is also provided with micro-hole aerator oxygenation in pond.
The return sludge ratio in A pond is 1.0-1.2:0.4-0.6.
The return sludge ratio of ABR is 1.0-1.2:0.1-0.3.
Design concept of the present invention is: (1), by regulating p H, makes the fish protein in waste water arrive iso-electric point, and waste water starts layering, and more than its rate of recovery reaches 80 %, waste water COD 42 % that decline, have obvious environmental benefit simultaneously.
(2) ABR has complicated mixed type hydraulic flow state, and closer to plug flow reactor.In ABR, the microbial in each reaction chamber, with flow process alternation step by step, can be observed quarter butt, stock, vibrios, thread fungus and coccus etc. by microscopy, and wherein methanogen be take thread fungus and bacillus as main.
(3) owing to there is " happiness oxygen " methanobacteria of some amount in anaerobic treatment reactor, these methanobacterias can keep good activity under the condition of aerobic, simultaneously due to the iris action of Sludge Bed, can keep the good anaerobic environment of Sludge Bed.Thereby for the ABR with segmentation characteristic, combine with A/ O technique, can obtain good water treatment effect.
(4) although A/ O technique has good biological carbon and phosphorous removal effect, reduce the phosphate concn in the rotten processing waste water of fish, still to rely on and add medicament removal.
The present invention compared with prior art has the following advantages and beneficial effect:
1, the present invention is reclaimed by cohesion, makes fat, nothing except containing in the rotten processing waste water of fish
Outside machine salt, tiny fish-skin etc., also contain the valuable materials such as a large amount of fine fish gruels and water-soluble protein, 15 % that account for total amount can recycle, and when alleviating wastewater treatment load, can produce certain economic benefit.
2, because the rotten processing waste water organic content of fish is high, adopt aerobe to process energy consumption large, and adopt
Conventional anaerobic biological treatment, reaches methanation during the stage, hydraulic detention time that need to be very long, and facility construction structure is complicated.Adopt ABR, it is simple in structure for this reason, and without triphase separator, cost is low.
3, consider that in the rotten processing waste water of fish, TP concentration is higher, and the relatively low feature of ammonia nitrogen concentration is taken
Join and adopt A/ O technique.Utilize the restraining effect of anaerobic condition to polyP bacteria, impel its form with dissolved phosphorus to be released in the phosphorus of enrichment in Aerobic Pond, and a large amount of absorbing volatile organic carbon source; Make good use of the excess ingestion of polyP bacteria under oxygen condition, phosphorus can be declined with speed faster.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
Utilize mechanical grille to remove taro, rotten piece remaining in waste water.The peak flow of mechanical grille is 80m
3/ h, nylon rake teeth spacing is 5mm, travelling speed 2m/min.
Adopt again vertical sedimentation basin to carry out solid-liquid separation cohesion and reclaim fish protein, be specially: add appropriate calcium chloride, accelerate after making to oppress dehydration hardening, remove the portion phosphate in waste water simultaneously; Add the addition of C aCl2, utilize troponin (thering is very strong calcium in conjunction with the energy) combination in Ca ion and the flesh of fish, make to oppress dehydration hardening, make it accelerate, also can remove the portion phosphate in waste water simultaneously.Now adjust waste water ph at 4.5-5.0.
Embodiment 2
After waste water after coagulation and recovery is processed is put in equalizing tank, put into airfloat equipment district, in Bing Xiang airfloat equipment district, add polymerize aluminum chloride, liquid caustic soda and polyacrylamide medicament take regulate airfloat equipment to process after the pH value of water outlet be 7.8-8.2.
Embodiment 3
Adopt 4 lattice ABR to process, each upper and lower stream chamber volume ratio of front 3 lattice is 2.0-2.8:1.0, and the 4th lattice are installed the filler that can control sludge loss material, and now ABR processes rear water outlet pH value at 5.6-6.0.
Embodiment 4
Adopt A/O biochemistry pool to process: A pond denitrification rate constant is 0.03-0.04, and hydraulic detention time is controlled at 3.8-4.5h, the pH value after the front step of adjustment is processed is to 7.4-7.8; The mud BOD loading in O pond is 0.10-0.12kg/ (kg.d), and hydraulic detention time controls to 18-24h; Micro-hole aerator oxygenation is also installed in O pond.
Process in heavy pond: second pond adopts vertical sedimentation basin, and centrifugal pump of horizontal axis returned sluge is installed, and makes sludge reflux in A pond and ABR.The return sludge ratio in A pond is 1.0-1.2:0.4-0.6.The return sludge ratio of ABR is 1.0-1.2:0.1-0.3.
Embodiment 5
Final deposition pool is processed: adopt inclined tube-type settling tank, and add suitable polymerize aluminum chloride and polyacrylamide and further remove the phosphoric acid salt in the water outlet on top, to regulate pH value to 7.0-7.2.
As above, can fine enforcement the present invention.
Claims (6)
1. the rotten processing wastewater treatment method of fish, is characterized in that, comprises following step:
Mechanical grille is removed taro, rotten piece remaining in waste water;
Fish protein is reclaimed in cohesion: adopt vertical sedimentation basin to carry out solid-liquid separation, be specially: add appropriate calcium chloride, accelerate after making to oppress dehydration hardening, remove the portion phosphate in waste water simultaneously;
Airfloat equipment is processed: after the waste water after coagulation and recovery is processed is put in equalizing tank, put into airfloat equipment district, in Bing Xiang airfloat equipment district, add polymerize aluminum chloride, liquid caustic soda and polyacrylamide medicament take regulate airfloat equipment to process after the pH value of water outlet be 7.8-8.2;
ABR processes: adopt 4 lattice ABR, each upper and lower stream chamber volume ratio of front 3 lattice is 2.0-2.8:1.0, and the 4th lattice are installed the filler that can control sludge loss material, and now ABR processes rear water outlet pH value at 5.6-6.0;
A/O biochemistry pool is processed: A pond denitrification rate constant is 0.03-0.04, and hydraulic detention time is controlled at 3.8-4.5h, and the pH value before adjusting after step processing is to 7.4-7.8; The mud BOD loading in O pond is 0.10-0.12kg/ (kg.d), and hydraulic detention time controls to 18-24h;
Process in heavy pond: second pond adopts vertical sedimentation basin, and centrifugal pump of horizontal axis returned sluge is installed, and makes sludge reflux in A pond and ABR;
Final deposition pool is processed: adopt inclined tube-type settling tank, and add suitable polymerize aluminum chloride and polyacrylamide and further remove the phosphoric acid salt in the water outlet on top, to regulate pH value to 7.0-7.2.
2. the rotten processing wastewater treatment method of fish according to claim 1, is characterized in that, the peak flow of described grid is 80m
3/ h, nylon rake teeth spacing is 5mm, travelling speed 2m/min.
3. the rotten processing wastewater treatment method of fish according to claim 1, is characterized in that, in cohesion recycling step, adjusts waste water ph at 4.5-5.0.
4. the rotten processing wastewater treatment method of fish according to claim 1, is characterized in that, described O is also provided with micro-hole aerator oxygenation in pond.
5. according to the rotten processing wastewater treatment method of the fish described in claim 1-4 any one, it is characterized in that, the return sludge ratio in A pond is 1.0-1.2:0.4-0.6.
6. the rotten processing wastewater treatment method of fish according to claim 5, is characterized in that, the return sludge ratio of ABR is 1.0-1.2:0.1-0.3.
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| CN201410359449.7A CN104086051A (en) | 2014-07-28 | 2014-07-28 | Minced fish processing wastewater treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129068A (en) * | 2017-05-02 | 2017-09-05 | 上海纳德生物科技有限公司 | Recovery prepares fish oil, the method for fish protein peptide in a kind of processing waste water from minced fillet |
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2014
- 2014-07-28 CN CN201410359449.7A patent/CN104086051A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129068A (en) * | 2017-05-02 | 2017-09-05 | 上海纳德生物科技有限公司 | Recovery prepares fish oil, the method for fish protein peptide in a kind of processing waste water from minced fillet |
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Application publication date: 20141008 |