CN212770367U - Slaughterhouse sewage treatment system - Google Patents
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Abstract
The invention belongs to the field of sewage treatment, and particularly relates to a slaughterhouse sewage treatment system which is formed by sequentially connecting a coarse grating well, an oil separation tank, a fine grating well, an adjusting tank, an air flotation machine, an adjusting and hydrolyzing tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank and a disinfection tank through pipelines, namely a waste water pipe is connected with an inlet of the coarse grating well, an outlet of the coarse grating well is connected with an inlet of the oil separation tank, an outlet of the oil separation tank is connected with an inlet of the fine grating well, an outlet of the fine grating well is connected with an inlet of the adjusting tank, the adjusting tank is connected with an inlet of the air flotation machine through a pump, a liquid outlet of the air flotation machine is connected with an inlet of the adjusting and hydrolyzing tank, an outlet of the adjusting and hydrolyzing tank is connected with an inlet of the anoxic tank, the anoxic tank is connected with an inlet of the primary aerobic tank, an outlet of the primary aerobic tank is connected with an inlet of, and discharging the wastewater out of the outlet of the disinfection tank.
Description
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to a slaughterhouse sewage treatment system.
Background
The waste water in the slaughtering process mainly comprises (1) waste water for washing livestock before slaughtering; (2) scalding hair and cleaning carcass waste water; (3) cleaning the viscera wastewater; (4) washing the waste water of the ground and appliances of the workshop; (5) washing the ring fence wastewater; (6) wastewater generated in the meat product processing process. Slaughter wastewater has high content of organic suspended matters and is easy to decay, and dissolved oxygen in water is consumed when the slaughter wastewater is discharged into a water body, so that an ecological system is damaged, and the environment is polluted. The water is reddish brown and has obvious fishy smell, and is typical organic sewage. The sewage generally does not contain heavy metals, toxic chemical substances, proteins, grease and high salt content. The conventional slaughter wastewater treatment process has low removal efficiency and cannot achieve ideal treatment effect. Therefore, a slaughterhouse sewage treatment system with better effect is urgently needed.
Disclosure of Invention
In order to solve the technical problem, the invention provides a slaughterhouse sewage treatment system which can well treat slaughterhouse sewage.
The specific technical scheme is as follows: a slaughterhouse sewage treatment system comprises a coarse grating well, an oil separation tank, a fine grating well, an adjusting tank, an air floatation machine, an adjusting and hydrolysis tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank, a disinfection tank, a sludge tank and a dehydrator, wherein the coarse grating well, the oil separation tank, the fine grating well, the adjusting tank, the air floatation machine, the adjusting and hydrolysis tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the disinfection tank are sequentially connected through pipelines, namely a waste water pipe is connected with an inlet of the coarse grating well, an outlet of the coarse grating well is connected with an inlet of the oil separation tank, an outlet of the oil separation tank is connected with an inlet of the fine grating well, an outlet of the fine grating well is connected with an inlet of the adjusting tank, the adjusting tank is connected with an inlet of the air floatation machine through a pump, a liquid outlet of the air floatation machine is connected with an inlet of the adjusting and hydrolysis tank, an outlet of the adjusting, the outlet of the first-stage aerobic tank is connected with the inlet of the second-stage aerobic tank, the outlet of the second-stage aerobic tank is connected with the inlet of the sedimentation tank, the supernatant outlet of the sedimentation tank is connected with the inlet of the disinfection tank, and the outlet of the disinfection tank is discharged;
the floating oil on the upper layer of the oil separation pool enters an oil collecting tank through an oil suction pipe for subsequent centralized treatment; a charging opening is arranged at the upper end of the air floatation machine, and a flocculating agent (such as polyaluminium chloride PAC and polyacrylamide PAM) is added; scum of the air flotation machine enters a sludge tank through an adsorption pipe; aeration pipes are arranged in the first-stage aerobic tank and the second-stage aerobic tank and are connected with an external air source; the middle part of the sedimentation tank is provided with a sludge return pipe, and the sedimentation tank is connected with the upper end of the anoxic tank through the sludge return pipe; the bottom of the sedimentation tank is provided with a sludge pipe, a pump is arranged on the sludge pipe, and the bottom of the sedimentation tank is connected with a sludge tank through the sludge pipe; the sludge pool is connected with a dehydrator through a pump, and dry sludge is transported outside through the dehydrator; the oil suction pipe and the oil suction pipe are provided with pumps, and adsorption power is provided through the pumps.
Removing large-volume floating objects, suspended matters and insoluble substances in the slaughter wastewater through a coarse grating well, removing large suspended matters from the slaughter wastewater through the grating well, allowing the wastewater with the large suspended matters removed through the grating well to enter an oil separation tank for oil-water separation, reducing the content of grease in the wastewater, removing part of suspended matters (SS), allowing the wastewater treated by the oil separation tank to enter a fine grating well, further removing fine particles and suspended matters from the wastewater, and allowing the effluent of the fine grating well to enter an adjusting tank for adjusting the water quality and the water quantity;
the water discharged from the regulating tank is lifted by a pump and enters an air floatation machine, by utilizing the characteristic that the water has different solubility under different pressures, the air sent to an air tank by an air compressor is brought into a dissolved air tank through a jet device and is forcedly dissolved in the water under the pressurization condition to form dissolved air water which is sent to the air floatation machine, and suspended impurities in the wastewater are separated into alum floc under the air floatation action by adding a flocculating agent, so that the aims of reducing COD (chemical oxygen demand), removing suspended matters (SS) and floating oil substances are achieved;
the effluent of the air flotation machine enters an adjusting and hydrolyzing tank, the tank contains high-content activated sludge, organic decomposition is carried out under the action of facultative microorganisms, macromolecular substances are decomposed into small molecules, and the biodegradability of the wastewater is improved so as to be beneficial to the subsequent biochemical reaction; meanwhile, denitrification reaction can be carried out to remove ammonia nitrogen in the wastewater; adjusting the effluent of the hydrolysis tank to enter a subsequent anoxic tank, degrading part of organic matters in the sewage in the anoxic tank through anaerobic microorganisms to perform hydrolysis and acidification functions, hydrolyzing macromolecular organic matters which are difficult to degrade into micromolecular organic matters, and improving the sewage treatment efficiency; the effluent of the anoxic tank enters an aerobic tank, and under the aeration condition, the organic matters in the wastewater are decomposed into CO2 and water by utilizing aerobic microorganisms, so that the aim of removing COD and BOD pollutants in the wastewater is fulfilled; the wastewater automatically flows into a sedimentation tank after two-stage aerobic treatment, the wastewater is subjected to mud-water separation, supernatant enters a subsequent disinfection tank, sludge at the bottom of the sedimentation tank enters a sludge tank, a mud-water mixture in the middle of the sedimentation tank returns to an anoxic tank, effluent of the sedimentation tank enters the disinfection tank, and deodorization, decoloration, sterilization and disinfection treatment are carried out on the effluent through ultraviolet rays, so that residual organic matters and inorganic matters in the wastewater are removed.
Drawings
FIG. 1 is a system diagram of the present invention.
Detailed Description
A slaughterhouse sewage treatment system comprises a coarse grating well, an oil separation tank, a fine grating well, an adjusting tank, an air floatation machine, an adjusting and hydrolysis tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank, a disinfection tank, a sludge tank and a dehydrator, wherein the coarse grating well, the oil separation tank, the fine grating well, the adjusting tank, the air floatation machine, the adjusting and hydrolysis tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the disinfection tank are sequentially connected through pipelines, namely a waste water pipe is connected with an inlet of the coarse grating well, an outlet of the coarse grating well is connected with an inlet of the oil separation tank, an outlet of the oil separation tank is connected with an inlet of the fine grating well, an outlet of the fine grating well is connected with an inlet of the adjusting tank, the adjusting tank is connected with an inlet of the air floatation machine through a pump, a liquid outlet of the air floatation machine is connected with an inlet of the adjusting and hydrolysis tank, an outlet of the adjusting, the outlet of the first-stage aerobic tank is connected with the inlet of the second-stage aerobic tank, the outlet of the second-stage aerobic tank is connected with the inlet of the sedimentation tank, the supernatant outlet of the sedimentation tank is connected with the inlet of the disinfection tank, and the outlet of the disinfection tank is discharged;
the floating oil on the upper layer of the oil separation pool enters an oil collecting tank through an oil suction pipe for subsequent centralized treatment; a charging opening is arranged at the upper end of the air floatation machine, and a flocculating agent (such as polyaluminium chloride PAC and polyacrylamide PAM) is added; scum of the air flotation machine enters a sludge tank through an adsorption pipe; aeration pipes are arranged in the first-stage aerobic tank and the second-stage aerobic tank and are connected with an external air source; the middle part of the sedimentation tank is provided with a sludge return pipe, and the sedimentation tank is connected with the upper end of the anoxic tank through the sludge return pipe; the bottom of the sedimentation tank is provided with a sludge pipe, a pump is arranged on the sludge pipe, and the bottom of the sedimentation tank is connected with a sludge tank through the sludge pipe; the sludge pool is connected with a dehydrator through a pump, and dry sludge is transported outside through the dehydrator; the oil suction pipe and the oil suction pipe are provided with pumps, and adsorption power is provided through the pumps. The air flotation machine is an ion air flotation machine.
Examples
1.1 Source and Properties of wastewater
The wastewater source of the project mainly comes from a workshop and mainly comprises (1) wastewater of flushing livestock before slaughter; (2) scalding hair and cleaning carcass waste water; (3) cleaning the viscera wastewater; (4) washing the waste water of the ground and appliances of the workshop; (5) washing the ring fence wastewater; (6) wastewater generated in the meat product processing process. Slaughter wastewater has high content of organic suspended matters and is easy to decay, and dissolved oxygen in water is consumed when the slaughter wastewater is discharged into a water body, so that an ecological system is damaged, and the environment is polluted. The water is reddish brown and has obvious fishy smell, and is typical organic sewage. The sewage generally does not contain heavy metals, toxic chemical substances, proteins, grease and high salt content.
1.2 amount of treated Water
According to the data provided by the owner, the maximum production of the slaughter wastewater of the project is 30m3(d) the daily construction capacity of the project is designed to be 50m3D (i.e. 2.1 m)3/h）。
1.3 design of Water quality
According to the relevant data provided by the first prescription and the slaughter and meat processing wastewater treatment engineering technical Specification (HJ 2002-2010) in Table 3, the water quality of slaughter wastewater is specifically shown in Table 2-1 by the design water inlet quality indexes of a wastewater treatment station:
TABLE 2-1 design of influent Water quality index for wastewater
The wastewater after treatment according to the requirements of the first prescription needs to reach the first-level standard in Table 3 of meat processing industry Water pollutant discharge Standard (GB 13457-92), and the specific effluent water quality index is shown in Table 2-2.
Table 2-2 shows the water quality index
2 wastewater treatment process
2.1 selection of the Process
Aiming at the characteristics of high pollutant concentration and easy biochemistry of the project. The design adopts a core process of anaerobic treatment, aerobic treatment and disinfection treatment, and the process is mature and reliable and operates stably aiming at the sewage process. Aiming at the problems of high raw water concentration and high treatment standard requirement, an advanced treatment process is added after the biochemical treatment, so that the sewage can be effectively ensured to reach the standard stably.
2.3 description of the Process
The slaughtering wastewater firstly passes through the coarse grid well, floating objects, suspended matters and insoluble substances with large volume in the wastewater are removed, a water pump unit, a pipeline valve and the like are prevented from being blocked, the load of a subsequent treatment structure is reduced, and the normal operation of the subsequent treatment structure is ensured. And the wastewater from which the large suspended matters are removed by the grid well enters an oil separation tank for oil-water separation, so that the content of grease in the wastewater is reduced, and part of SS is removed. And the wastewater treated by the oil separation tank enters a fine grid well to further remove fine particles, suspended matters and the like in the wastewater. And (4) enabling the outlet water of the fine grid well to enter an adjusting tank, and adjusting the water quality and the water quantity.
The water from the regulating tank is pumped into the air floating machine, and the air from the air compressor is brought into the air dissolving tank via the jet flow device and forced to dissolve in water under pressurizing condition to form water dissolved in water and the water dissolved in the air floating tank. By adding a flocculating agent, suspended impurities in the wastewater form alum floc which is separated under the action of air flotation, so that COD (chemical oxygen demand) can be reduced, and substances such as SS (suspended solids), floating oil and the like can be removed.
The effluent of the air flotation machine enters an adjusting and hydrolyzing tank, the tank contains high-content activated sludge, organic decomposition is carried out under the action of facultative microorganisms, macromolecular substances are decomposed into small molecules, and the biodegradability of the wastewater is improved so as to be beneficial to the subsequent biochemical reaction; meanwhile, denitrification reaction can be carried out to remove ammonia nitrogen in the wastewater. The effluent of the adjusting and hydrolyzing tank enters a subsequent anoxic tank, part of organic matters in the sewage are degraded by anaerobic microorganisms in the anoxic tank, conditions are created for the subsequent process, the hydrolysis and acidification effects are realized by controlling the retention time of the hydrolyzing tank, the organic matters which are difficult to degrade and are large in molecules are hydrolyzed into small-molecule organic matters, and the sewage treatment efficiency is improved. The effluent of the anoxic tank enters an aerobic tank, and under the aeration condition, the organic matters in the wastewater are decomposed into CO2 and water by using aerobic microorganisms, so that the aim of removing pollutants such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like in the wastewater is fulfilled. And part of the mixed liquor in the aerobic tank flows back to the anoxic tank, and the ammonia nitrogen in the water can be removed through denitrification reaction. The wastewater automatically flows into a sedimentation tank after two-stage aerobic treatment, the sludge and the water of the wastewater are separated, the supernatant enters a subsequent intermediate water tank, and the precipitated sludge enters a sludge tank. And the effluent of the second sedimentation tank enters a disinfection tank, and is subjected to treatments such as deodorization, decoloration, sterilization, disinfection and the like through ultraviolet rays, so that residual organic matters and inorganic matters in the wastewater are removed. And the effluent of the disinfection pond enters an oxidation pond.
The process comprises the steps that sludge generated by an oil separation tank, an air floatation machine, a sedimentation tank and the like enters a sludge tank, and is lifted to a screw-stacking dehydrator by a sludge pump for dehydration and then is transported outside.
The system mainly comprises a grid well, an adjusting and hydrolyzing tank, an air floatation machine, an anoxic tank, an aerobic tank, a sedimentation tank, a disinfection tank and the like, and the following is a detailed description of each part:
(1) grid well
The grid well is used for carrying out solid-liquid separation on the wastewater, removing large granular substances and scum garbage thereof and preventing subsequent treatment equipment from being blocked.
(2) Oil separation tank
The oil separation tank achieves the purpose of separation by utilizing the difference of specific gravity of suspended matters and water in the wastewater. The structure of the oil separation pool adopts a horizontal flow mode mostly, oily wastewater enters the oil separation pool with a rectangular plane through a water distribution tank, slowly flows along the horizontal direction, oil products float on the water surface in the flow, and are pushed into an oil collection pipe or an oil suction pipe by an oil collection pipe or an oil scraper arranged on the surface of the pool to flow into an oil collection tank. Heavy oil and other impurities precipitated in the oil separation tank are accumulated in a sludge hopper at the bottom of the tank and enter a sludge pipe through a sludge discharge pipe. The wastewater after oil separation treatment overflows into a drainage channel and is discharged out of the pool, and subsequent treatment is carried out to remove emulsified oil and other pollutants.
(3) Adjusting and hydrolyzing tank
Is used for regulating water quantity and homogenizing water quality, and mixing domestic wastewater with pretreated extraction wastewater to make sewage uniformly enter a subsequent treatment unit. Carry out quality of water equilibrium, water regulation in the equalizing basin to get rid of a part COD in the waste water through the hydrolysis acidification, and decompose macromolecule organic matter into micromolecule organic matter, improve the biodegradability of waste water, alleviate follow-up sewage treatment unit's processing load.
(4) Air floatation machine
Used for removing suspended solid particles SS and suspended colloidal substances in the comprehensive wastewater, and a pH adjusting system is arranged in front of the air floatation machine. The air floatation treatment method is to introduce air into the waste water and separate out the air in the form of micro-bubbles from the water to form a carrier, so that the pollutant substances such as emulsified oil, micro suspended particles and the like in the waste water are adhered to the bubbles and float to the water surface along with the bubbles to form a three-phase mixture of foam gas, water and particles (oil), and the purposes of separating impurities and purifying the waste water are achieved by collecting the foam or scum. The flotation method is mainly used for treating emulsified oil which is difficult to remove by natural sedimentation or floating or tiny suspended particles with the relative density close to 1 in the wastewater.
The pressurized dissolved air floatation method is most widely applied at home and abroad. At present, the pressure air float method is most widely applied. Compared with other methods, it has the following advantages:
under the pressurization condition, the air solubility is high, the quantity of bubbles for air supply and floatation is large, and the air floatation effect can be ensured; the dissolved gas is suddenly decompressed and released, and the generated bubbles are fine, uniform in granularity, high in concentration, stable in floating and small in disturbance to liquid, so that the method is particularly suitable for solid-liquid separation of loose floccules and fine particles; the process and the equipment are simple, and the management and the maintenance are convenient; especially, the partial reflux type has obvious and stable treatment effect and can greatly save energy consumption.
(5) Anoxic pond
The anoxic pond is a biochemical system with dissolved oxygen controlled between 0.2-0.5mg/l in terms of relative anaerobic and aerobic. The anoxic tank refers to a reaction tank without dissolved oxygen but with nitrate. The anoxic tank has hydrolysis reaction, and the pH value is increased in the denitrification process. In the denitrification process, the denitrification process mainly plays a role in removing nitrate nitrogen through denitrification, simultaneously removes partial BOD, and also has a role in improving biodegradability through hydrolysis reaction.
The anaerobic reaction is divided into 4 stages: a. a hydrolysis stage: due to the large molecular volume of the macromolecular organic matter, the macromolecular organic matter can not directly pass through the cell wall of anaerobic bacteria, and needs to be decomposed into small molecules by extracellular enzymes outside microorganisms. Typical organic substances in wastewater such as cellulose are decomposed into cellobiose and glucose by cellulase, starch is decomposed into maltose and glucose, and protein is decomposed into short peptides and amino acids. The decomposed small molecules can enter the cell body through the cell wall to be decomposed in the next step. b. And (3) acidification stage: the small molecule organic matter enters the cell body to be converted into simpler compounds and is distributed outside the cell, and the main product of the stage is Volatile Fatty Acid (VFA), and meanwhile, partial products such as alcohols, lactic acid, carbon dioxide, hydrogen, ammonia, hydrogen sulfide and the like are generated. c. An acetic acid production stage: at this stage, the product of the last step is further converted into acetic acid, carbonic acid, hydrogen and new cellular material. d. A methanogenesis stage: at this stage, acetic acid, hydrogen, carbonic acid, formic acid and methanol are all converted to methane, carbon dioxide and new cellular material. This phase is also the most important phase of the whole anaerobic process and the rate-limiting phase of the whole anaerobic reaction process. The hydrolysis tank is generally a hydrolysis acidification tank, namely the reaction of the whole tank is controlled in the first two anaerobic stages, so that macromolecular substances are decomposed into micromolecular easily-decomposed substances, and the B/C ratio of the wastewater is improved.
(6) Aerobic tank
The biological contact oxidation method is a biomembrane process between an activated sludge process and a biological filter, and is characterized in that a filler is arranged in the biological contact oxidation tank, aeration is carried out on the bottom of the biological contact oxidation tank to oxygenate sewage, and the sewage in the tank body is in a flowing state, so that the sewage is ensured to be fully contacted with the filler immersed in the sewage, and the defect of uneven contact between the sewage and the filler in the biological contact oxidation tank is avoided.
Oxygen required by microorganisms in the biological contact oxidation method is usually supplied by blast aeration, after the biofilm grows to a certain thickness, the microorganisms near the filler wall carry out anaerobic metabolism due to oxygen deficiency, the produced gas and the scouring action formed by aeration can cause the falling of the biofilm and promote the growth of new biofilm to form the metabolism of the biofilm, and the fallen biofilm flows out of the pool along with effluent.
The biological contact oxidation method has the following characteristics:
the specific surface area of the filler is large, the oxygenation condition in the tank is good, and the biosolids per unit volume in the tank is high, so that the biological contact oxidation tank has high volume load; because the biological contact oxidation pond has a large amount of biological solids and water flow is completely mixed, the biological contact oxidation pond has stronger adaptability to sudden changes of water quality and water quantity; the excess sludge amount is small, the sludge expansion problem does not exist, and the operation management is simple and convenient.
(7) Sedimentation tank
The treated water is separated from the sludge by utilizing gravity natural sedimentation, and the SS index is reduced. The generated sludge enters sludge concentration.
The scheme adopts the steps that the chemical enhanced phosphorus removal is carried out by adding the chemicals in front of the sedimentation tank, and the chemicals are subjected to mixing reaction and sedimentation separation in the sedimentation tank. The concentration of phosphorus in water is low through the excessive absorption of microorganisms in the aerobic tank to the phosphorus, so the dosage is far less than that of a method for adding the phosphorus before biochemistry; the amount of chemical sludge produced by the method is less than that of biological sludge, and the normal operation of the biological treatment process cannot be influenced by the accumulation of the chemical sludge.
In addition, the scheme adopts an optimized operation mode, namely, the medicament is added under the condition that the phosphorus content of the effluent exceeds the standard, and the medicament does not need to be added when the quality of the effluent is high, so that the medicament consumption and the sludge production of the system can be obviously reduced.
(8) Disinfection pool
Ultraviolet rays are mainly used for killing microorganisms (such as bacteria, viruses, spores and other pathogens) by damaging radiation of the microorganisms and destroying functions of nucleic acids, so that the disinfection purpose is achieved. The action of ultraviolet light on nucleic acids can result in bond and strand breaks, interstrand cross-linking, and the formation of photoproducts, among other things, thereby altering the biological activity of DNA to render microorganisms unable to replicate themselves, and this ultraviolet damage is also lethal.
(9) Spiral shell stacking dehydrator
The sludge at the positions of the ion flotation machine, the sedimentation tank and the like all flows into the spiral-stacked dehydrator to be dehydrated, the supernatant flows into the adjusting and hydrolyzing tank, and the thick sludge is dried and then transported to be treated.
Fold spiral shell sludge dewaterer and constitute by four major parts of flocculation mixing tank, fold spiral shell body, filtrating reposition of redundant personnel groove and electric cabinet.
Effect of treatment
Claims (3)
1. A slaughterhouse sewage treatment system is characterized by comprising a coarse grating well, an oil separation tank, a fine grating well, an adjusting tank, an air floatation machine, an adjusting and hydrolysis tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank, a sedimentation tank, a disinfection tank, a sludge tank and a dehydrator, wherein the coarse grating well, the oil separation tank, the fine grating well, the adjusting tank, an air floatation machine, the adjusting and hydrolysis tank, the anoxic tank, the primary aerobic tank, the secondary aerobic tank, the sedimentation tank and the disinfection tank are sequentially connected through pipelines, namely a waste water pipe is connected with an inlet of the coarse grating well, an outlet of the coarse grating well is connected with an inlet of the oil separation tank, an outlet of the oil separation tank is connected with an inlet of the fine grating well, an outlet of the fine grating well is connected with an inlet of the adjusting tank, the adjusting tank is connected with an inlet of the air floatation machine through a pump, a liquid outlet of the air floatation machine is connected with an inlet of the adjusting and hydrolysis tank, an outlet of the adjusting and, the outlet of the first-stage aerobic tank is connected with the inlet of the second-stage aerobic tank, the outlet of the second-stage aerobic tank is connected with the inlet of the sedimentation tank, the supernatant outlet of the sedimentation tank is connected with the inlet of the disinfection tank, and the outlet of the disinfection tank is discharged;
the floating oil on the upper layer of the oil separation pool enters an oil collecting tank through an oil suction pipe; the upper end of the air floatation machine is provided with a charging hole, and scum of the air floatation machine enters a sludge tank through an adsorption pipe; aeration pipes are arranged in the first-stage aerobic tank and the second-stage aerobic tank and are connected with an external air source; the middle part of the sedimentation tank is provided with a sludge return pipe, and the sedimentation tank is connected with the upper end of the anoxic tank through the sludge return pipe; the bottom of the sedimentation tank is provided with a sludge pipe, a pump is arranged on the sludge pipe, and the bottom of the sedimentation tank is connected with a sludge tank through the sludge pipe; the sludge pool is connected with the dehydrator through a pump and is transported outside after passing through the dehydrator; the oil suction pipe and the oil suction pipe are provided with pumps, and adsorption power is provided through the pumps.
2. The slaughterhouse wastewater treatment system of claim 1, wherein the dewaterer is a stack screw dewaterer.
3. The slaughterhouse wastewater treatment system of claim 1, wherein the air flotation machine is an ion air flotation machine.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185057A (en) * | 2021-04-24 | 2021-07-30 | 东莞市盛象环境科技有限公司 | Pig slaughtering wastewater standard treatment equipment and operation method thereof |
| CN113943080A (en) * | 2021-10-29 | 2022-01-18 | 深圳万宏业科技有限公司 | Environment-friendly treatment system and method for various waste sewage |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185057A (en) * | 2021-04-24 | 2021-07-30 | 东莞市盛象环境科技有限公司 | Pig slaughtering wastewater standard treatment equipment and operation method thereof |
| CN113943080A (en) * | 2021-10-29 | 2022-01-18 | 深圳万宏业科技有限公司 | Environment-friendly treatment system and method for various waste sewage |
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