CN210528713U - Slaughter effluent treatment plant - Google Patents

Slaughter effluent treatment plant Download PDF

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Publication number
CN210528713U
CN210528713U CN201921218697.4U CN201921218697U CN210528713U CN 210528713 U CN210528713 U CN 210528713U CN 201921218697 U CN201921218697 U CN 201921218697U CN 210528713 U CN210528713 U CN 210528713U
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pond
tank
treatment plant
sludge
wastewater treatment
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CN201921218697.4U
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Chinese (zh)
Inventor
左小伟
刘自豪
王国峰
席小立
刘佳佳
魏俊敏
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Henan Lance Environmental Protection Technology Co ltd
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Henan Lance Environmental Protection Technology Co ltd
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Abstract

The utility model discloses a slaughter effluent treatment plant belongs to waste water treatment technical field, and this slaughter effluent treatment plant includes grid well, aeration adjusting tank, sieve filtering pond, oil removal sedimentation tank, air supporting pond, sump pit, USAB pond, CASS pond and the buffer pool that sets gradually along the waste water treatment direction, and aeration adjusting tank's delivery port promotes through first water pump to sieve the filtering pond, and the delivery port of sump pit promotes to the USAB pond through the second water pump, and sieve the filtering pond sets up the scum outlet, and oil removal sedimentation tank, air supporting pond, USAB pond and CASS pond all set up the drain, and scum outlet and drain all are connected with the sludge thickening pond, and the sludge thickening pond is connected with the sludge dewatering computer lab, the filtration liquid of sludge dewatering computer lab and the supernatant of sludge thickening pond all flow back to the aeration adjusting pond. The slaughtering wastewater treatment device can ensure that the removal rate of pollutants in the sewage is high, and the discharged water quality reaches the sewage discharge standard.

Description

Slaughter effluent treatment plant
Technical Field
The utility model belongs to the technical field of waste water treatment technique and specifically relates to a slaughter effluent treatment plant is related to.
Background
In the prior art, the wastewater discharged in the slaughtering and meat product processing processes of live pigs contains a large amount of pollutants such as blood stain, grease, hair, visceral impurities, undigested food and excrement, has uncomfortable bloody red color and bloody fishy smell, and also contains pathogenic bacteria such as coliform bacteria and excrement streptococcus which are harmful to human health. The waste water has the characteristics of large concentration change, high organic matter content and the like, and is directly discharged into the environment to seriously pollute the water body, so a waste water treatment device needs to be designed to solve the existing technical problems.
The publication with the publication number of CN 208362113U provides a slaughtering wastewater treatment device, which comprises a grid channel (1), a solid-liquid separator (2), an adjusting tank (3), a UASB reactor (4), a CASS (5), a biogas conveying pipe (6), a water sealer (7), a biogas collection and purification device (8), a booster fan (9) and a biogas utilization device (10). However, the process of the wastewater treatment device is simpler, the removal rate of pollutants is lower, and the removal rate needs to be further improved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a slaughter effluent treatment plant to the not enough of prior art to improve the treatment effeciency of slaughtering the waste water.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a slaughter effluent treatment plant, includes grid well, aeration adjusting tank, sieve filtering pond, oil removal sedimentation tank, air supporting pond, sump pit, USAB pond, CASS pond and the buffer tank that sets gradually along the waste water treatment direction, the delivery port of aeration adjusting tank promotes through first water pump to the sieve filtering pond, the delivery port of sump pit promotes through the second water pump to the USAB pond, the sieve filtering pond sets up row cinder notch, oil removal sedimentation tank, air supporting pond, USAB pond and CASS pond all set up the drain, it all is connected with sludge thickening tank to arrange cinder notch and drain, sludge thickening tank is connected with sludge dewatering machine room, the filtration liquid of sludge dewatering machine room and the supernatant of sludge thickening tank all flow back to aeration adjusting tank.
Furthermore, the grid well adopts the binary channels, and a passageway sets up simple and easy grid, and another passageway sets up mechanical grid.
Furthermore, the simple grating and the mechanical grating are respectively provided with a gate in the front and at the back.
Furthermore, a plurality of inspection ports are arranged on the tank body of the aeration adjusting tank.
Furthermore, be equipped with the fine grid of rotation type filter screen in the sieve filter pond, the aperture of the fine grid of rotation type filter screen is 1 mm.
Furthermore, a medicament feeding port is arranged on the air floatation tank.
Further, the slaughtering wastewater treatment device further comprises an accident well, and a water outlet of the accident well is connected with the aeration regulating tank.
Further, the USAB pool is connected with a biogas collecting device.
Further, the CASS tank is connected with an aeration device.
Further, the buffer pool is provided with a disinfectant inlet.
The utility model has the advantages that:
the utility model provides a slaughter wastewater treatment device, which is used for improving the treatment efficiency of slaughter wastewater, in particular, the slaughter wastewater enters an aeration regulating tank after large suspended matters are removed through a grid well, the aeration regulating tank can mix water uniformly, and a stirring system has the functions of preventing large impurities in the wastewater from depositing at the bottom of the tank and uniformly mixing the wastewater; the aeration system ensures that the water quality is prevented from smelling, and simultaneously has a certain uniform effect on the waste water in the regulating tank, thereby preventing the water quality from smelling. The screening and filtering tank is used for removing minced meat and viscera impurities, the oil separation sedimentation tank can be used for carrying out solid-liquid separation and oil removal treatment, the water collection well is used for adjusting the water quality and the water quantity of waste water discharged from a factory area, the UASB tank is a high-load anaerobic tank, the waste water is acted by multiple microorganisms under the anaerobic condition, and the biodegradability of the microorganisms is greatly improved while the organic load of the sewage is reduced. The CASS pool can effectively prevent sludge from swelling. And the effluent of the CASS tank enters a buffer tank, and the disinfectant is added into the buffer tank to kill harmful substances such as viruses in the wastewater, so that the effluent meets the water quality requirement of the discharged water. The sludge in the sludge concentration tank comes from an oil separation sedimentation tank, an air floatation tank, a UASB tank and a CASS tank. The concentrated sludge enters a belt type sludge dewatering machine for dewatering, and the dewatered sludge is directly transported out for landfill. Supernatant of the sludge concentration tank and leachate of a dewatering machine room flow back to the aeration regulating tank to enter the system again for treatment. The slaughter wastewater treatment device can efficiently remove pollutants in the wastewater, the discharged water quality reaches the wastewater discharge standard, and the engineering investment and the operation cost are reduced under the condition of ensuring that the discharged water reaches the standard; the technology is simple and reliable; advanced facility equipment, convenient operation, stable operation and low energy consumption; the whole process has less investment and small occupied area.
Drawings
FIG. 1 is a schematic structural view of the slaughtering wastewater treatment plant of the utility model.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in figure 1, the slaughtering wastewater treatment device comprises a grid well 1, an aeration adjusting tank 3, a screening and filtering tank 4, an oil separation sedimentation tank 5, an air flotation tank 6, a water collecting well 7, a USAB (American society of Industrial science) tank 8, a CASS (tank anaerobic sludge System) tank 9 and a buffer tank 10 which are sequentially arranged along the wastewater treatment direction, wherein the water outlet of the aeration adjusting tank 3 is lifted to the screening and filtering tank 4 through a first water pump, and the water outlet of the water collecting well 7 is lifted to the USAB tank 8 through a second water pump.
Wherein: slaughter waste water and mix and get into grid well 1, grid well 1 adopts the binary channels design, and a passageway sets up simple and easy grid, and another passageway sets up mechanical grid, gets rid of the bold suspended solid, and grid well 1 blocks the suspended solid that floats more than 5mm in the sewage respectively through simple and easy grid and mechanical grid, and in normal production process, sewage just gets into the system through simple and easy grid through mechanical grid, only when mechanical grid trouble. The gates are arranged around the simple grating and the mechanical grating, so that the safe operation of the system during maintenance is ensured.
The waste water outlet after the grid well 1 comes out is respectively connected with the accident pool 2 and the aeration adjusting pool 3, the waste water enters the aeration adjusting pool under the normal condition, the waste water can enter the accident pool 2 when the sewage treatment facility is abnormal in operation, the sewage can be temporarily stored in the accident pool 2 for emergency use, and after the system or equipment is overhauled, the sewage enters the system again for treatment.
The aeration adjusting tank 3 collects the waste water from the grid well 1, and the aeration adjusting tank 3 adopts an underground structure. The retention time is 12h, 3-5 inspection ports are arranged on the tank body of the aeration adjusting tank 3, the whole tank body is completely closed except the inspection ports, and shrub plants are planted at the top and around the inspection ports to adsorb the emitted odor.
Waste water from the outlet of the aeration regulating tank 3 is lifted to the screen filtering tank 4 through the first water pump, a rotary type filter screen fine grid is arranged in the screen filtering tank 4, the aperture of the rotary type filter screen fine grid is 1mm, floating suspended matters above 1.0mm in the waste water can be removed, pollutants such as broken meat and inner dirt can be better removed through the rotary type filter screen fine grid, and the fact that equipment in a sewage system is not blocked is guaranteed.
The wastewater from the outlet of the screening tank 4 enters an oil separation sedimentation tank 5, the oil separation sedimentation tank 5 can be used for removing oil particles with the particle size of more than 60 microns and most of solid particles in the wastewater, and a horizontal flow structure is adopted, so that not only can floating oil and oil blocks be removed, but also most of impurities which are insoluble in water and have the density higher than that of water are precipitated.
The wastewater from the outlet of the oil separation sedimentation tank 5 enters an air floatation tank 6, an agent inlet is arranged on the air floatation tank 6 and is a PAC inlet and a PAM inlet, and the PAC and the PAM are added through an agent inlet 13 to play a role in flocculation and demulsification, so that the micro particles can quickly form a flocculating constituent of larger particles. The air flotation tank 6 is also provided with an air supply port 14, the air flotation tank 6 is adsorbed on the particles (oil drops) to be removed from the air supply port 14 by a large number of micro-bubbles, and pollutants are taken out of the water surface by the buoyancy of the air flotation tank to achieve the purpose of separation. The water collecting well 7 adjusts the quality and quantity of the pretreated wastewater, so as to ensure the stability of the water inlet load in the biochemical reaction stage and the normal operation of the system, and domestic sewage is converged therein.
The sewage of the collecting well 7 is lifted by a second water pump to enter a UASB pool 8, the UASB pool 8 is a high-load anaerobic pool, and the wastewater is jointly acted by a plurality of microorganisms under the anaerobic condition to decompose organic matters and mainly generate CH4And CO2Greatly improves the biodegradability while reducing the organic load of the sewage. The UASB tank 8 is connected with a biogas collecting device and consists of a sludge reaction zone, a gas-liquid-solid three-phase separator (including a settling zone) and a gas chamber. A large amount of anaerobic sludge is reserved in a reaction zone at the bottom of the UASB tank 8, and sludge with good settling property and coagulation property forms a sludge layer at the lower part. The sewage to be treated flows into the sludge layer from the bottom of the anaerobic sludge bed and is mixed and contacted with the sludge, and the microorganisms in the sludge decompose the organic matters in the sewage and convert the organic matters into methane. The marsh gas is continuously discharged in the form of micro bubbles, the micro bubbles are continuously combined in the ascending process to gradually form larger bubbles, a sludge layer with thinner sludge concentration is formed at the upper part of a sludge bed due to the stirring of the marsh gas, the sludge and water ascend together to enter a three-phase separator, and when the marsh gas touches a reflecting plate at the lower part of the separator, the marsh gas is folded to the periphery of the reflecting plate, then passes through a water layer to enter a gas chamber, and is concentrated in the marsh gas in the gas chamber, connected with a marsh gas collecting device and led out by a guide pipe.
The wastewater from the UASB tank 8 enters the CASS tank 9 through the rapid transfer mechanism of enzyme to rapidly adsorb most soluble organic matters in the wastewater, and undergoes a high-load matrix rapid accumulation process, thereby having good buffering effect on the quality, quantity, pH and toxic and harmful substances of the inlet water and effectively preventing sludge from swelling. The CASS biological pond operates in a certain time sequence, the operation process comprises four stages of water inlet-aeration, static sedimentation, water and sludge drainage and idling, and the operation modes and time of different operation stages can be adjusted according to requirements.
In the water inlet-aeration stage CASS, the water filling and aeration 16 are carried out in the main reaction area, and meanwhile, a return sludge pump in the tank continuously pumps return sludge to the pre-reaction area. At the moment, the organic pollutants are oxidized and decomposed by microorganisms, and simultaneously ammonia nitrogen in the sewage is converted into nitrate nitrogen through the nitrification of the microorganisms;
the CASS main reaction zone is not filled with water or aerated in the static precipitation stage, at the moment, the microorganisms are subjected to oxidative decomposition by using the residual DO in the water, the biological tank is gradually changed from an aerobic state to an anoxic state, the denitrification reaction is started, the activated sludge is gradually precipitated to the bottom of the tank, and the upper-layer water is gradually cleared;
the decanter of the CASS main reaction zone starts to work in the stage of draining water and sludge, supernatant is gradually drained from top to bottom, and meanwhile, a residual sludge pump in the tank conveys residual sludge to a sludge concentration tank. At the moment, the CASS biological pool gradually transits from an anoxic state to an anaerobic state, and the denitrification reaction is continuously carried out.
CASS 9 play water and get into buffer pool 10, the buffer pool sets up disinfectant input mouth, kills harmful substance such as virus in the waste water through throwing disinfectant 17 to buffer pool 10 in, makes the play water reach the effluent water quality requirement.
The filter screen 4 sets up row's cinder notch, separate oil sedimentation tank 5, air supporting pond 6, USAB pond 8 and CASS pond 9 and all set up the drain, arrange cinder notch and drain and all be connected with sludge thickening tank 11, sludge thickening tank 11 is connected with sludge dewaterer 12, the filtration liquid of sludge dewaterer 12 and the supernatant of sludge thickening tank all flow back extremely aeration equalizing basin 3, reentrant system handles.
By adopting the treatment process and combining related empirical data, the removal rate of main pollutants in the sewage treatment effect of the company is counted, and the statistical results are shown in the following tables (I) - (III);
watch 1
Watch 2
Watch (III)
From the data, the effluent water treated by the slaughter wastewater treatment device reaches the first-level discharge standard of the meat processing industry water pollutant discharge standard (GB13457-92) of the livestock slaughter processing industry. Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. The utility model provides a slaughter effluent treatment plant which characterized in that: including grid well, aeration adjusting tank, sieve filtering pond, oil removal sedimentation tank, air supporting pond, sump pit, USAB pond, CASS pond and the buffer pool that sets gradually along the waste water treatment direction, aeration adjusting tank's delivery port promotes through first water pump to sieve the filtering pond, the delivery port of sump pit promotes through the second water pump to the USAB pond, sieve filtering pond sets up row's cinder notch, oil removal sedimentation tank, air supporting pond, USAB pond and CASS pond all set up the drain, arrange cinder notch and drain and all be connected with sludge thickening tank, sludge thickening tank is connected with the sludge dewatering computer lab, the filtration liquid of sludge dewatering computer lab and the supernatant of sludge thickening tank all flow back to aeration adjusting tank.
2. Slaughter wastewater treatment plant according to claim 1, characterized in that: the grid well adopts the binary channels, and a passageway sets up simple and easy grid, and another passageway sets up mechanical grid.
3. Slaughter wastewater treatment plant according to claim 2, characterized in that: the simple grating and the mechanical grating are equally divided into a front part and a rear part and are respectively provided with a gate.
4. Slaughter wastewater treatment plant according to claim 1, characterized in that: and a plurality of inspection ports are arranged on the tank body of the aeration adjusting tank.
5. Slaughter wastewater treatment plant according to claim 1, characterized in that: be equipped with the thin grid of rotation type filter screen in the sieve filter pond, the aperture of the thin grid of rotation type filter screen is 1 mm.
6. Slaughter wastewater treatment plant according to claim 1, characterized in that: and a medicament feeding port is arranged on the air floatation tank.
7. Slaughter wastewater treatment plant according to claim 1, characterized in that: the water inlet of the accident well is connected with the grid well, and the water outlet of the accident well is connected with the aeration regulating tank.
8. Slaughter wastewater treatment plant according to claim 1, characterized in that: the USAB pool is connected with a biogas collecting device.
9. Slaughter wastewater treatment plant according to claim 1, characterized in that: the CASS tank is connected with an aeration device.
10. Slaughter wastewater treatment plant according to claim 1, characterized in that: the buffer pool is provided with a disinfectant inlet.
CN201921218697.4U 2019-07-31 2019-07-31 Slaughter effluent treatment plant Active CN210528713U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921218697.4U CN210528713U (en) 2019-07-31 2019-07-31 Slaughter effluent treatment plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921218697.4U CN210528713U (en) 2019-07-31 2019-07-31 Slaughter effluent treatment plant

Publications (1)

Publication Number Publication Date
CN210528713U true CN210528713U (en) 2020-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921218697.4U Active CN210528713U (en) 2019-07-31 2019-07-31 Slaughter effluent treatment plant

Country Status (1)

Country Link
CN (1) CN210528713U (en)

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