CN115818902A - Slaughter wastewater treatment method - Google Patents
Slaughter wastewater treatment method Download PDFInfo
- Publication number
- CN115818902A CN115818902A CN202310052718.4A CN202310052718A CN115818902A CN 115818902 A CN115818902 A CN 115818902A CN 202310052718 A CN202310052718 A CN 202310052718A CN 115818902 A CN115818902 A CN 115818902A
- Authority
- CN
- China
- Prior art keywords
- treatment
- wastewater
- tank
- water
- treatment process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003307 slaughter Methods 0.000 title claims abstract description 44
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 27
- 238000011282 treatment Methods 0.000 claims abstract description 164
- 239000002351 wastewater Substances 0.000 claims abstract description 150
- 238000000034 method Methods 0.000 claims abstract description 115
- 238000011221 initial treatment Methods 0.000 claims abstract description 36
- 230000000813 microbial effect Effects 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000005189 flocculation Methods 0.000 claims abstract description 22
- 230000016615 flocculation Effects 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 108
- 239000000701 coagulant Substances 0.000 claims description 59
- 238000009270 solid waste treatment Methods 0.000 claims description 27
- 239000012535 impurity Substances 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 15
- 239000003921 oil Substances 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 14
- 239000000295 fuel oil Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 9
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 9
- 125000000129 anionic group Chemical group 0.000 claims description 9
- 230000020477 pH reduction Effects 0.000 claims description 9
- 229920002401 polyacrylamide Polymers 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 7
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 235000013372 meat Nutrition 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 2
- 238000005374 membrane filtration Methods 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 19
- 244000005700 microbiome Species 0.000 abstract description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005188 flotation Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 22
- 208000028659 discharge Diseases 0.000 description 12
- 239000013049 sediment Substances 0.000 description 9
- 238000004062 sedimentation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Abstract
The invention relates to slaughter wastewater treatment, in particular to a slaughter wastewater treatment method. Which comprises the following steps: carrying out solid-liquid separation on the slaughter wastewater; a pretreatment process; flocculation treatment; an electro-flotation treatment process; acidizing; aerobic biological treatment; a microorganism primary treatment process; a microorganism advanced treatment process; according to the invention, a flocculation and assembly electric air flotation treatment process is adopted, the removal rate of C0Dcr and chromaticity in the wastewater is improved in a simple manner, the treatment effect of the wastewater is stable, an aerobic biological treatment process is adopted secondly, different types of organic matters in the wastewater can be degraded, the treatment effect of the wastewater is improved again, a microbial treatment process is adopted finally, the microorganisms in the wastewater are fully removed through primary treatment and deep treatment, and the CODcr, SS, chromaticity and ammonia nitrogen are optimized again, so that the method has a good removal effect, and has the effects of low cost, easiness in operation and high treatment quality.
Description
Technical Field
The invention relates to slaughter wastewater treatment, in particular to a slaughter wastewater treatment method.
Background
The slaughter wastewater mainly comprises livestock cleaning wastewater, viscera washing wastewater, blood of livestock and excrement wastewater. The slaughtering wastewater has the characteristics of high ammonia nitrogen concentration, high concentration of suspended matters, high concentration of organic matters, deep chromaticity and the like. The main pollutants contained in the wastewater are grease and protein, and if the wastewater is directly discharged into a water body without treatment, the eutrophication of the water body can be caused, the water quality is damaged, the water body is blackened and smelled, the self-purification capacity of the water body is exceeded, and the irreversible influence is generated.
The core of the slaughter wastewater treatment is that the ammonia nitrogen concentration is reduced, the ratio of BOD5 to COD of the slaughter wastewater is more than 5, and the slaughter wastewater has good biodegradability, so that the slaughter wastewater is generally treated by a biological method at present. The current mature denitrification technology comprises traditional biological denitrification technologies such as A/O, A2/O and the like, and consists of two processes of nitrification and denitrification, namely ammonia nitrogen is oxidized into nitrite through nitrification, and then nitrate is reduced into ammonia through denitrification. If only an anaerobic method is adopted, the effluent quality can not meet the requirement, if an anaerobic-aerobic combined process is adopted, although the technology can lead organic matters to reach the emission standard, the NH4 < + > -N removal rate is not obvious, sometimes even can not meet the emission requirement, in recent years, along with the continuous improvement of living standard, the scale of slaughterhouses is continuously enlarged, the emission amount of slaughter wastewater is larger and larger, and the existing treatment process can not bear high-load and high-salt slaughter wastewater; in view of the above, there is an urgent need for a slaughter wastewater treatment method having a flocculation-aerobic-microbial treatment process to improve the disadvantages of the prior art.
Disclosure of Invention
The invention aims to provide a slaughter wastewater treatment method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides a slaughter wastewater treatment method, which comprises the following steps:
s1, carrying out solid-liquid separation on slaughter wastewater through a grating, filtering animal hair, meat fragments, bone residues and other suspended substances, enabling solids to enter a solid-waste treatment process, and enabling the wastewater to enter a pretreatment process;
s2, adding a coagulant and a coagulant aid into the air floatation tank for flocculation treatment to remove CODcr, removing impurities such as dispersed oil, emulsified oil, fluff and fine suspended particles with small particles remained in the wastewater through an electric floatation treatment process after flocculation, and allowing sludge generated by air floatation to enter a concentration tank treatment process; the composite inorganic high-molecular coagulant prepared by the coagulant and the coagulant aid has wider pH value and temperature application range, and improves the removal rate of CODcr and chromaticity of wastewater;
s3, carrying out acidification treatment on the wastewater after air floatation, and then carrying out an aerobic biological treatment process;
s4, the wastewater after biological treatment enters a microbial treatment process, wherein the process comprises a primary treatment process and an advanced treatment process, the wastewater firstly enters a primary treatment tank, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing;
s5, the wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities contained in the water are removed through microbial treatment membrane filtration, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump starts to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank, and finally the wastewater reaches the discharge standard.
In the invention, a microorganism treatment process is adopted, and the microorganisms in the wastewater are fully removed by primary treatment and advanced treatment, and the CODcr, SS, chromaticity and ammonia nitrogen are optimized again to achieve a good removal effect, so that the discharge index of the treated wastewater is superior to a primary discharge standard, and the method has the effects of low cost, easiness in operation and high treatment quality.
As a further improvement of the technical solution, in S1, the pretreatment process includes a precipitation treatment and a heavy oil treatment, specifically: the sediment is treated by a grit chamber to remove easily precipitated sand particles and other substances, the sediment enters a solid waste treatment process, the suspension passes through an oil separation tank to filter heavy oil and other impurities, the filtrate enters a solid waste treatment process, and the filtrate enters a water collecting tank.
As a further improvement of the technical solution, in S1, the pretreatment process further includes a conditioning treatment, specifically: the wastewater in the collecting tank also needs to enter a regulating tank to control the water quantity and the water quality of the treated wastewater.
In a further improvement of the present technical solution, in S2, the coagulant is at least one selected from polymeric ferric sulfate and polymeric aluminum chloride-polyvinyl ammonium.
As a further improvement of the technical scheme, in the S2, the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate.
As a further improvement of the technical scheme, in S2, the ratio of the coagulant to the coagulant aid is 1.
As a further improvement of the technical scheme, in S4, broken stone blocks are paved at the bottom of the primary treatment tank, and activated carbon is contained in gaps among the stone blocks.
As a further improvement of the technical scheme, in S4, the wastewater enters a primary treatment pool and stands for 2 hours.
As a further improvement of the technical scheme, in the step S5, the deep treatment pool is repeatedly treated for 3 to 5 times.
As a further improvement of the technical scheme, in S5, two microbial treatment membranes are respectively located at the water inlet and the water outlet of the tank, namely, the top and the bottom of the tank.
Compared with the prior art, the invention has the beneficial effects that:
in this slaughter wastewater treatment method, adopt the processing procedure of flocculation assembly electricity air supporting, through simple mode, improve the clearance of waste water C0Dcr and colourity, with the treatment effect of waste water, and the effect is stable, secondly adopt the aerobic biological treatment process, can all obtain the degradation with different types of organic matters in the waste water, improve the waste water treatment effect once more, at last adopt the microbial treatment process again, through preliminary treatment collocation advanced treatment, fully get rid of the microorganism in the waste water, optimize CODcr once more, SS, colourity and ammonia nitrogen have better removal effect, make the waste water discharge index through handling be superior to one-level emission standard, and the cost is possessed, easy operation, the effect that treatment quality is high.
Drawings
FIG. 1 is an overall flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the embodiment of the invention, shown in fig. 1, the slaughter wastewater treatment method comprises the following steps:
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, filtering animal hair, meat scraps, bone residues and other suspended substances, allowing solids to enter a solid waste treatment process, allowing the wastewater to enter a grit chamber for precipitation treatment, removing substances such as sand grains which are easy to precipitate, allowing precipitates to enter a solid waste treatment process, allowing suspension to pass through an oil separation tank to filter heavy oil and other impurities, allowing filtrate to enter a solid waste treatment process, and allowing filtrate to enter a water collection tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding a coagulant and a coagulant aid into the floatation tank for flocculation treatment to remove CODcr, removing impurities such as dispersed oil, emulsified oil, fluff, fine suspended particles and the like which are remained in the wastewater and have smaller particles through an electric floatation treatment process after flocculation, directly oxidizing part of organic matters during electrolysis to reduce the using amount of the coagulant, and allowing sludge generated by floatation to enter a concentration tank treatment process;
wherein: the coagulant is selected from at least one of polymeric ferric sulfate and polymeric aluminum chloride-polyvinyl ammonium;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
the composite inorganic high-molecular coagulant prepared by the raw materials has wider pH value and temperature application range, and improves the removal rate of CODcr and chromaticity of wastewater;
(3) The wastewater is subjected to acidification treatment after air floatation, and then is subjected to aerobic biological treatment process, and biological metabolism is carried out in the presence of oxygen to degrade organic matters, so that the organic matters are stable and harmless;
(4) The wastewater after biological treatment enters a microbial treatment process, which comprises a primary treatment process and an advanced treatment process, the wastewater firstly enters a primary treatment tank, broken stone blocks are laid at the bottom of the tank, activated carbon is contained in gaps among the stone blocks, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing for 2 hours; when the wastewater enters the primary treatment tank, sediment in the wastewater falls to the bottom and remains in the stone gaps, and water quality optimization treatment is performed through activated carbon;
(5) The wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities in the water are removed by filtering through a microbial treatment membrane, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump is started to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank for 3-5 times, and finally the wastewater reaches the discharge standard;
wherein: the two microbial treatment membranes are respectively positioned at the water inlet and the water outlet of the tank, namely the top of the tank and the bottom of the tank.
According to the invention, a flocculation and assembly electric air flotation treatment process is adopted, the removal rate of C0Dcr and chromaticity in the wastewater is improved in a simple manner, the treatment effect of the wastewater is stable, an aerobic biological treatment process is adopted secondly, different types of organic matters in the wastewater can be degraded, the treatment effect of the wastewater is improved again, a microbial treatment process is adopted finally, the microorganisms in the wastewater are fully removed through primary treatment and deep treatment, CODcr, SS, chromaticity and ammonia nitrogen are optimized again, the better removal effect is achieved, the treated wastewater discharge index is superior to the primary discharge standard, and the effects of cost, easiness in operation and high treatment quality are achieved.
The process for the treatment of slaughter wastewater according to the invention is further illustrated by the following specific examples, based on different process standards.
Example 1
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, enabling solid to enter a solid waste treatment process, enabling the wastewater to enter a grit chamber for sedimentation treatment, enabling sediment to enter a solid waste treatment process, filtering heavy oil and other impurities from suspension liquid through an oil separation tank, enabling filtered substances to enter a solid waste treatment process, and enabling filtered liquid to enter a water collecting tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding coagulant and coagulant aid into the floatation tank for flocculation treatment, and then performing an electric floatation treatment process after flocculation, wherein sludge generated by floatation enters a concentration tank treatment process;
wherein: the coagulant is preferably polymeric ferric sulfate;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
(3) Carrying out acidification treatment on the wastewater after air floatation, and then carrying out aerobic biological treatment;
(4) The wastewater after biological treatment enters a microbial treatment process, the wastewater firstly enters a primary treatment tank, broken stones are laid at the bottom of the tank, activated carbon is contained in the gaps of the stones, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing for 2 hours;
(5) The wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities in the water are removed by filtering through a microbial treatment membrane, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump is started to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank for 5 times, and finally the wastewater reaches the discharge standard;
wherein: the two microbial treatment membranes are respectively positioned at the water inlet and the water outlet of the tank, namely the top of the tank and the bottom of the tank.
Example 2
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, enabling solid to enter a solid waste treatment process, enabling the wastewater to enter a grit chamber for sedimentation treatment, enabling sediment to enter a solid waste treatment process, filtering heavy oil and other impurities from suspension liquid through an oil separation tank, enabling filtered substances to enter a solid waste treatment process, and enabling filtered liquid to enter a water collecting tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding a coagulant and a coagulant aid into the floatation tank for flocculation treatment, and then performing an electric floatation treatment process after flocculation, wherein sludge generated by floatation enters a concentration tank treatment process;
wherein: the coagulant is preferably polyaluminium chloride-polyvinyl ammonium;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
(3) Carrying out acidification treatment on the wastewater after air floatation, and then carrying out aerobic biological treatment;
(4) The wastewater after biological treatment enters a microbial treatment process, the wastewater firstly enters a primary treatment tank, broken stones are laid at the bottom of the tank, activated carbon is contained in gaps among the stones, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing for 2 hours;
(5) The wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities in the water are removed by filtering through a microbial treatment membrane, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump is started to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank for 3 times, and finally the wastewater reaches the discharge standard;
wherein: the two microbial treatment membranes are respectively positioned at the water inlet and the water outlet of the tank, namely the top of the tank and the bottom of the tank.
Example 3
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, enabling solid to enter a solid waste treatment process, enabling the wastewater to enter a grit chamber for sedimentation treatment, enabling sediment to enter a solid waste treatment process, filtering heavy oil and other impurities from suspension liquid through an oil separation tank, enabling filtered substances to enter a solid waste treatment process, and enabling filtered liquid to enter a water collecting tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding coagulant and coagulant aid into the floatation tank for flocculation treatment, and then performing an electric floatation treatment process after flocculation, wherein sludge generated by floatation enters a concentration tank treatment process;
wherein: the coagulant is preferably a mixture of polymeric ferric sulfate and polymeric aluminum chloride-polyvinyl ammonium;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
(3) Carrying out acidification treatment on the wastewater after air floatation, and then carrying out aerobic biological treatment;
(4) The wastewater after biological treatment enters a microbial treatment process, the wastewater firstly enters a primary treatment tank, broken stones are laid at the bottom of the tank, activated carbon is contained in the gaps of the stones, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing for 2 hours;
(5) The wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities in the water are removed by filtering through a microbial treatment membrane, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump is started to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank for 4 times, and finally the wastewater reaches the discharge standard;
wherein: the two microbial treatment membranes are respectively positioned at the water inlet and the water outlet of the tank, namely the top of the tank and the bottom of the tank.
Example 4
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, enabling solid to enter a solid waste treatment process, enabling the wastewater to enter a grit chamber for sedimentation treatment, enabling sediment to enter a solid waste treatment process, filtering heavy oil and other impurities from suspension liquid through an oil separation tank, enabling filtered substances to enter a solid waste treatment process, and enabling filtered liquid to enter a water collecting tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding a coagulant and a coagulant aid into the floatation tank for flocculation treatment, and then performing an electric floatation treatment process after flocculation, wherein sludge generated by floatation enters a concentration tank treatment process;
wherein: the coagulant is preferably polymeric ferric sulfate;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
(3) Carrying out acidification treatment on the wastewater after air floatation, and then carrying out aerobic biological treatment;
(4) The wastewater after biological treatment enters a microbial treatment process, the wastewater firstly enters a primary treatment tank, broken stones are laid at the bottom of the tank, activated carbon is contained in gaps among the stones, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing for 2 hours;
(5) The wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities in the water are removed by filtering through a microbial treatment membrane, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump is started to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank for 3 times, and finally the wastewater reaches the discharge standard;
wherein: the two microbial treatment membranes are respectively positioned at the water inlet and the water outlet of the tank, namely the top of the tank and the bottom of the tank.
Example 5
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, enabling solid to enter a solid waste treatment process, enabling the wastewater to enter a grit chamber for sedimentation treatment, enabling sediment to enter a solid waste treatment process, filtering heavy oil and other impurities from suspension liquid through an oil separation tank, enabling filtered liquid to enter a solid waste treatment process, and enabling filtered liquid to enter a water collecting tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding a coagulant and a coagulant aid into the floatation tank for flocculation treatment, and then performing an electric floatation treatment process after flocculation, wherein sludge generated by floatation enters a concentration tank treatment process;
wherein: the coagulant is preferably polyaluminium chloride-polyvinyl ammonium;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
(3) Carrying out acidification treatment on the wastewater after air floatation, and then carrying out aerobic biological treatment;
(4) The wastewater after biological treatment enters a microbial treatment process, the wastewater firstly enters a primary treatment tank, broken stones are laid at the bottom of the tank, activated carbon is contained in gaps among the stones, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing for 2 hours;
(5) The wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities in the water are removed by filtering through a microbial treatment membrane, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump is started to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank for 5 times, and finally the wastewater reaches the discharge standard;
wherein: the two microbial treatment membranes are respectively positioned at the water inlet and the water outlet of the tank, namely the top of the tank and the bottom of the tank.
Table 1 examples 1-5 process parameters
In order to verify that the slaughter wastewater treatment method provided by the embodiment of the invention has better effect, the slaughter wastewater treatment method provided by the embodiment of the invention is comparatively illustrated by the following comparative examples.
Comparative example 1
This comparative example, using the treatment method of example 1, except the microbial treatment process, was carried out by the following specific steps:
(1) Carrying out solid-liquid separation on slaughter wastewater through a grid, enabling solid to enter a solid waste treatment process, enabling the wastewater to enter a grit chamber for sedimentation treatment, enabling sediment to enter a solid waste treatment process, filtering heavy oil and other impurities from suspension liquid through an oil separation tank, enabling filtered substances to enter a solid waste treatment process, and enabling filtered liquid to enter a water collecting tank;
the wastewater in the water collecting tank enters a regulating tank, the water quantity and the water quality of the treated wastewater are controlled, and the wastewater enters an air floatation tank to carry out the next biochemical treatment process;
(2) Adding a coagulant and a coagulant aid into the floatation tank for flocculation treatment, and then performing an electric floatation treatment process after flocculation, wherein sludge generated by floatation enters a concentration tank treatment process;
wherein: the coagulant is preferably polymeric ferric sulfate;
the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate;
the ratio of the coagulant to the coagulant aid is 1;
(3) And carrying out acidification treatment on the wastewater after air floatation, and then carrying out aerobic biological treatment.
Comparative example 2
The comparative example adopts the treatment method of example 2, the microorganism removing treatment process is not changed, the specific steps are similar to those of comparative example 1, and the description of the comparative example is omitted.
Comparative example 3
The treatment method of example 3 is adopted in the comparative example, the microorganism treatment process is removed, the rest is not changed, the specific steps are similar to those of comparative example 1, and the details of the comparative example are not repeated.
Comparative example 4
The comparative example adopts the treatment method of example 4, the microorganism removing treatment process is not changed, the specific steps are similar to those of comparative example 1, and the description of the comparative example is omitted.
Comparative example 5
The comparative example adopts the treatment method of example 5, the microorganism removing treatment process is not changed, the specific steps are similar to those of comparative example 1, and the description of the comparative example is omitted.
Test examples
In the test example, the water treated by the processes of examples 1 to 5 and comparative examples 1 to 5 was divided into 3 parts, the upper, middle and lower positions of the water tank were respectively taken, and each part of water was measured, and the specific measurement indicators are shown in table 2.
TABLE 2 average values of the detection indexes of the respective samples of examples 1 to 5 and comparative examples 1 to 5
As shown in Table 2, the treatment methods provided in examples 1-5 of the present invention have better removal effects on CODcr, SS, chromaticity and ammonia nitrogen in slaughter wastewater, and the removal rates are all above 90%, while the treatment methods adopted in comparative examples 1-5 have significantly reduced effects compared with examples 1-5, so that it can be shown that the addition of a microorganism treatment process in slaughter wastewater treatment of the present invention is an important factor affecting wastewater treatment effects.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and the present invention is not limited to the embodiments, and various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A slaughter wastewater treatment method is characterized by comprising the following steps:
s1, carrying out solid-liquid separation on slaughter wastewater through a grating, filtering animal hair, meat fragments, bone residues and other suspended substances, enabling solids to enter a solid-waste treatment process, and enabling the wastewater to enter a pretreatment process;
s2, adding a coagulant and a coagulant aid into the floatation tank for flocculation treatment to remove CODcr, removing small-particle dispersed oil, emulsified oil, fluff and fine suspended particles remained in the wastewater through an electric floatation treatment process after flocculation, and allowing sludge generated by floatation to enter a concentration tank treatment process;
s3, carrying out acidification treatment on the wastewater after air floatation, and then carrying out an aerobic biological treatment process;
s4, the wastewater after biological treatment enters a microbial treatment process, wherein the process comprises a primary treatment process and an advanced treatment process, the wastewater firstly enters a primary treatment tank, when the primary treatment tank reaches the water level, water feeding is stopped, and the wastewater in the tank is discharged after standing;
s5, the wastewater after primary treatment enters an advanced treatment tank, the wastewater enters from an opening at the top of the tank, microbial impurities contained in the water are removed through microbial treatment membrane filtration, when the water inflow reaches the water level, the water inflow is stopped, meanwhile, a circulating pump starts to work, the circulating pump repeatedly treats the wastewater in the advanced treatment tank, and finally the wastewater reaches the discharge standard.
2. The slaughter wastewater treatment method according to claim 1, characterized in that: in the S1, the pretreatment process comprises precipitation treatment and heavy oil treatment, sand grains which are easy to precipitate are removed by adopting a grit chamber for precipitation treatment, the precipitate enters a solid waste treatment process, heavy oil and other impurities are filtered out from the suspension through an oil separation tank, the filtrate enters a solid waste treatment process, and the filtrate enters a water collecting tank.
3. The slaughter wastewater treatment method according to claim 2, wherein: and in the S1, the pretreatment process further comprises regulation treatment, and the wastewater in the water collecting tank needs to enter a regulating tank to control the water quantity and the water quality of the treated wastewater.
4. The slaughter wastewater treatment method according to claim 1, wherein: in S2, the coagulant is selected from at least one of polymeric ferric sulfate and polymeric aluminum chloride-polyvinyl ammonium.
5. The slaughter wastewater treatment method according to claim 1, wherein: in S2, the coagulant aid is preferably a mixture of anionic polyacrylamide, silicate and aluminum sulfate.
6. The slaughter wastewater treatment method according to claim 1, characterized in that: in S2, the ratio of the coagulant to the coagulant aid is 1.1-0.7.
7. The slaughter wastewater treatment method according to claim 1, characterized in that: and in the S4, broken stones are paved at the bottom of the primary treatment pool, and activated carbon is contained in the gaps among the stones.
8. The slaughter wastewater treatment method according to claim 1, characterized in that: and in the S4, allowing the wastewater to enter a primary treatment tank and standing for 2 hours.
9. The slaughter wastewater treatment method according to claim 1, characterized in that: and in the S5, the deep treatment pool is repeatedly treated for 3-5 times.
10. The slaughter wastewater treatment method according to claim 1, characterized in that: in S5, two microbial treatment membranes are arranged and are respectively positioned at the water inlet and the water outlet of the tank, namely the top and the bottom of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310052718.4A CN115818902A (en) | 2023-02-03 | 2023-02-03 | Slaughter wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310052718.4A CN115818902A (en) | 2023-02-03 | 2023-02-03 | Slaughter wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115818902A true CN115818902A (en) | 2023-03-21 |
Family
ID=85520719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310052718.4A Pending CN115818902A (en) | 2023-02-03 | 2023-02-03 | Slaughter wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115818902A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5732794A (en) * | 1980-08-05 | 1982-02-22 | Mitsubishi Chem Ind Ltd | Treatment of waste water of slaughterhouse |
| CN105645688A (en) * | 2016-01-28 | 2016-06-08 | 王祥 | Slaughter wastewater treatment complete device and slaughter wastewater treatment method |
| CN106977040A (en) * | 2016-01-15 | 2017-07-25 | 厦门聚龙腾威环境工程技术有限公司 | The technique that slaughtering wastewater is handled using UCT |
| CN109133538A (en) * | 2018-10-12 | 2019-01-04 | 河南恒安环保科技有限公司 | A kind of slaughterhouse wastewater treatment method |
| CN112777855A (en) * | 2020-12-21 | 2021-05-11 | 广州博才环保技术有限公司 | Efficient slaughter wastewater treatment process and application method |
-
2023
- 2023-02-03 CN CN202310052718.4A patent/CN115818902A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5732794A (en) * | 1980-08-05 | 1982-02-22 | Mitsubishi Chem Ind Ltd | Treatment of waste water of slaughterhouse |
| CN106977040A (en) * | 2016-01-15 | 2017-07-25 | 厦门聚龙腾威环境工程技术有限公司 | The technique that slaughtering wastewater is handled using UCT |
| CN105645688A (en) * | 2016-01-28 | 2016-06-08 | 王祥 | Slaughter wastewater treatment complete device and slaughter wastewater treatment method |
| CN109133538A (en) * | 2018-10-12 | 2019-01-04 | 河南恒安环保科技有限公司 | A kind of slaughterhouse wastewater treatment method |
| CN112777855A (en) * | 2020-12-21 | 2021-05-11 | 广州博才环保技术有限公司 | Efficient slaughter wastewater treatment process and application method |
Non-Patent Citations (1)
| Title |
|---|
| 何铁林主编: "《新编实用化工产品配方与制备 水处理剂分册》", 北京：化学工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109133538A (en) | A kind of slaughterhouse wastewater treatment method | |
| CN109133531A (en) | A kind of process for town sewage treatment being applicable in quasi- IV class water quality standard | |
| CN102838260A (en) | Industrial sewage treatment system and sewage treatment method | |
| CN109437454B (en) | Enhanced physicochemical treatment method and device for refined high-salt high-ammonia special oily sewage | |
| CN102515446B (en) | BCM (Biology Cilium Magnetic) biological sewage treatment system and BCM biological sewage treatment process | |
| CN106746360A (en) | High concentration DMF leathers steam liquor treating process | |
| CN110451733A (en) | A kind for the treatment of process of leather-making waste water | |
| CN208136047U (en) | A kind of coking wastewater processing system | |
| CN109020070A (en) | The processing method of anti-oxidant agent production waste water | |
| CN111847764A (en) | Method for treating printing and dyeing wastewater based on catalytic oxidation of ozone | |
| CN109437494A (en) | A kind of processing unit and method of water-jet loom sewage | |
| CN108275780A (en) | The nitrogenous petrochemical wastewater processing unit of novel height and the method for parameter adjustment | |
| CN103073156A (en) | Method for treating poly butylene succinate production waste water by biochemical method | |
| CN112960861A (en) | Biological denitrification treatment process for stainless steel pickling wastewater | |
| CN210885705U (en) | Reclaimed water recycling system for petrochemical wastewater | |
| CN109851160B (en) | Advanced sewage treatment method | |
| CN216737990U (en) | Deep treatment system capable of achieving III-class water standard of surface water | |
| CN115818902A (en) | Slaughter wastewater treatment method | |
| CN110422970A (en) | A kind of petrochemical wastewater processing method | |
| CN113277677B (en) | Treatment method and reuse water treatment process for production wastewater of disposable nitrile gloves | |
| CN109502900A (en) | A kind of Pb-Zn deposits beneficiation wastewater treatment for reuse Processes and apparatus | |
| CN213771720U (en) | High-efficient deep purification system of compact water | |
| CN114315034A (en) | Lemon processing wastewater treatment system and process | |
| CN114195332A (en) | Deep treatment system and method capable of achieving surface water III-class water standard | |
| CN210261455U (en) | Intensive modular combined aquaculture tail water treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230321 |