CN211896524U

CN211896524U - Ecological system for purifying production wastewater of slaughter meat combined plant

Info

Publication number: CN211896524U
Application number: CN201922441740.XU
Authority: CN
Inventors: 徐德镇; 徐杰; 周艳
Original assignee: Chengdu Tianfu Longzhong Ecological Technology Development Co ltd
Current assignee: Chengdu Tianfu Longzhong Ecological Technology Development Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-11-10
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a slaughter meat factory waste water purification ecosystem, including the sludge dewatering room, marsh gas holder and be used for handling waste water and the slagging-off grid groove that feeds through in proper order, oil skimming tank, sand setting regulation hydrolysis acidification pond, multistage high-efficient anaerobism pond, the high-efficient pond of contact oxidation, sludge sedimentation tank and disinfection filtering ponds, the mixed liquid of the high-efficient pond bottom of contact oxidation and sludge sedimentation tank internal portion mud remove the reflux and take out to the high-efficient anaerobism pond of first order, most mud is arranged to the sludge dewatering room. The utility model discloses earlier carry out the preliminary treatment measure of slagging-off, degreasing, then adopt high-efficient anaerobism as leading, high-efficient good oxygen as assisting to combine strong oxidant disinfection, not only ensure that waste water from production purifies the ecological environmental protection target that realizes retrieval and utilization and discharge to reach standard through handling, moreover-drop less, low throw the high efficiency, the clean production good mode that accords with circulation and sustainable development economy that energy saving productivity consumption reduction is showing.

Description

Ecological system for purifying production wastewater of slaughter meat combined plant

Technical Field

The utility model relates to a useless sewage treatment purifies technical field, especially relates to slaughter meat and meat factory waste water purification ecosystem.

Background

The pig slaughtering process is generally as follows: electric shock → slaughtering → peeling, removing pig hair → dividing → finished product → selling, collecting blood, feces and fat of slaughtered pig and transporting to outside.

The meat processing wastewater contains a large amount of blood pollutants, fur, broken meat, viscera impurities, undigested feed, excrement and other pollutants. The wastewater has high concentrations of pollutants such as COD, BOD, suspended matters and the like, is reddish brown, has obvious fishy smell and is typical organic wastewater. The waste water does not contain heavy metals and toxic chemical substances, but is rich in protein and grease.

The excessive discharge of the wastewater pollutes the surrounding environment and water body, and can cause serious influence on the life and production of the masses.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing slaughter meat antithetical couplet factory waste water purification ecosystem, purify the retrieval and utilization to slaughter meat antithetical couplet factory waste water, be favorable to the water resource protection to and maintain ecological environment.

In order to achieve the above purpose, the utility model discloses an ecological technology, the scheme is as follows:

the system for purifying the production wastewater of the slaughtering meat factory comprises a methane gas storage cabinet, a sludge dewatering room, a slag removal grid groove, an oil skimming tank, a sand setting adjusting hydrolysis acidification tank, a multi-stage high-efficiency anaerobic tank, a contact oxidation high-efficiency tank, a sludge sedimentation tank and a disinfection filtering tank which are used for treating wastewater and are sequentially communicated; the biogas of the high-efficiency anaerobic tank is input into a biogas storage cabinet, and a dehydration device and a desulfurization device are arranged between the high-efficiency anaerobic tank and the biogas storage cabinet;

but the mixed liquid of contact oxidation high-efficient bottom of the pool portion reflux is taken out to the high-efficient anaerobism pond of first order through the backwash pump, and mud passes through the mud pump in the high-efficient anaerobism pond and can pump to sludge dewatering room.

Furthermore, the grit adjusting hydrolysis acidification tank integrates deslagging, grit settling, homogenization, hydrolysis acidification and pH adjustment, a water distributor is arranged at the bottom of the grit adjusting hydrolysis acidification tank, and porous filler is arranged above the water distributor.

Preferably, the multistage efficient anaerobic tank is a three-stage efficient anaerobic tank.

Further preferably, the first-stage efficient anaerobic tank is an anaerobic composite sludge bed efficient anaerobic tank; the second-stage efficient anaerobic tank is a flow type fixed biological membrane efficient anaerobic tank; the third-stage high-efficiency anaerobic tank is an up-flow anaerobic filtration high-efficiency anaerobic tank.

Further, an aeration pipe at the bottom of the contact oxidation high-efficiency tank is connected with an air outlet of the Roots blower.

Preferably, the high-efficiency anaerobic tank and the contact oxidation high-efficiency tank are internally provided with fillers which have large porous specific surface area, and are rich in biological bacteria and membranes.

Further preferably, the filler is a plastic foam porous filler, or an elastic filler, or a BF filler.

Wherein, a sludge pump is arranged in the sludge sedimentation tank, and the outlet of the sludge pump is connected with a sludge dewatering room.

Further, a belt type dehydrator is arranged in the sludge dehydration room, and filter pressing liquid and washing water generated in the sludge dehydration room are discharged into a sand setting adjusting hydrolysis acidification pool.

Furthermore, the slaughter meat factory production wastewater purification system also comprises a chlorine dioxide generator, and an outlet of the chlorine dioxide generator is connected with the disinfection filter tank.

Compared with the prior art, the utility model discloses have following effect of showing:

1, the utility model firstly carries out the pretreatment measures of deslagging and degreasing, then adopts high-efficiency anaerobic as the main part and high-efficiency aerobic as the auxiliary part, and combines strong oxidant for disinfection, thereby not only ensuring the ecological environmental protection target of recycling and standard discharge of the production wastewater through treatment and purification, but also ensuring a clean production excellent mode which has less investment, low investment, high efficiency, obvious energy saving, capacity reduction and consumption reduction and accords with the economy of circulation and sustainable development;

2, the bacteria-rich filler is arranged in the tank, so that the unit volume load and the pollutant removal rate are greatly improved, the tank volume can be reduced, the occupied area is reduced, and the investment and operation cost are reduced;

3, anaerobic treatment is mainly used to ensure that the purification treatment is mostly carried out under a closed condition, and the operation control and odor control are easy; the anaerobic condition needs less nutrient; because the sludge concentration is high, the sludge can bear larger load and water quality change, the volume load generally reaches 5-10kg COD/m3.d, and the sludge concentration can reach 50 COD/m3. d; the sludge can be stored for a long time, the activity is kept, and the removal of pollutants is not influenced by external environmental conditions;

4, the utility model adopts anaerobic treatment as the main part, and has low energy consumption, low investment, low operating cost and simple management; the generated sludge is little, only is 1/6-1/10 aerobic, has high mineralization degree, is easy to dehydrate, has small treatment device and low corresponding treatment cost;

5, the marsh gas generated in the treatment process can be combusted, the sludge can be used as fertilizer, the purified water can be reused as water for cleaning, cooling, agricultural irrigation, fish culture in ecological ponds and the like, and the method has social and economic benefits.

Drawings

FIG. 1 is a schematic diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a plan view of the grit conditioning hydrolysis acidification tank 1.

Detailed Description

In order to make the objects, ecological solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in figures 1 and 2, the utility model discloses a slaughter meat factory waste water purification ecosystem, including sludge dewatering room 8, marsh gas storage tank 10 and be used for handling waste water and the slagging-off grid groove 4 that communicates in proper order, oil skimming tank, sand setting regulation hydrolysis-acidification tank 1, multistage high-efficient anaerobism pond, contact oxidation high-efficient pond 5, sludge sedimentation tank 6 and disinfection filtering ponds 7.

The biogas gas storage cabinet 10 of the high-efficiency anaerobic pool, a dehydration device 41 and a desulphurization device 42 are arranged between the high-efficiency anaerobic pool and the biogas gas storage cabinet 10. The marsh gas generated by the high-efficiency anaerobic tank passes through the dehydration device and the desulphurization device and then passes through the marsh gas storage cabinet 10, so that the generated marsh gas can be combusted after being treated, thereby reflecting the waste into valuable and improving the economic benefit. And the sewage generated by the dewatering device 41 is led into the grit adjusting hydrolysis acidification tank 1. The system should be equipped with safe air pressure valve, meter, kitchen range, strictly follow the gas safety and need to know the use.

The grit adjusting hydrolysis acidification tank 1 is a combined tank integrating deslagging, grit settling, homogenization/hydrolysis acidification and pH adjusting modification functions. In order to exert the high-efficiency function of the anaerobic hydrolysis acidification process, the tank is provided with a water distributor in the activated sludge at the bottom; a filler which has large porous specific surface area, is rich in biological bacteria and membranes is arranged above the water distributor.

As shown in figure 3, a deslagging grid groove 101 is arranged at the inlet of the settling sand adjusting hydrolysis acidification tank 1, and a manual or mechanical grid and a 10-20-mesh stainless steel wire net are arranged in the deslagging grid groove 101 to realize deslagging. The grid sets up twice, and one clearance is 10mm, and another clearance is 5mm, and the thick sediment thing can be got rid of to the sewage flow through the grid. In order to save cost, manual periodical slag removal can be adopted.

The multistage efficient anaerobic tank in the embodiment is a three-stage efficient anaerobic tank. The first-stage efficient anaerobic tank 21 is an anaerobic composite sludge bed efficient anaerobic tank. The tank is a combination of an activated sludge bed of an up-flow anaerobic sludge bed reactor and a filter (filling) biomembrane bed of a down-flow anaerobic filter, and is provided with a water distributor to form a UASB + AF reactor, which is called a first-stage UASB + AF high-efficiency anaerobic tank for short. The lower part of the tank is 1.0m active sludge bed, the bottom of the tank is provided with a water distributor connected with the water from the front tank, the upper part of the tank is provided with a filtering (filling) material biomembrane bed with the thickness of 1.0-3.0 m, and the thickness is determined according to the water quantity and the effective water depth of the tank.

The water distributor at the bottom of the sludge bed can digest the activated sludge from bottom to top and make the fully activated sludge bed enrich, acclimate and propagate the granular sludge in the metabolism.

The core of the down-flow anaerobic filter is a filtering (filling) material biomembrane bed, and the wastewater plays a key role no matter passes through the down-flow anaerobic filter in an up-flow mode or a down-flow mode, so that the down-flow anaerobic filter does not consume energy, generates the biogas CH4, and is simple to manage after entering normal operation.

The second-stage high-efficiency anaerobic tank 22 is a flow type fixed biological membrane high-efficiency anaerobic tank, and is called a second-stage DSFF anaerobic tank for short; the third-stage high-efficiency anaerobic tank 23 is an up-flow type anaerobic filtration high-efficiency anaerobic tank, and is called a third-stage AF anaerobic tank for short. A pressure regulating tank is arranged between the high-efficiency anaerobic tanks and is mainly used for regulating pressure.

An aeration pipe at the bottom of the contact oxidation high-efficiency tank 5 is connected with an air outlet of the Roots blower 31. The contact oxidation high-efficiency tank 5 leads the low-concentration wastewater to pass through a filler aerobic biomembrane zone and an activated sludge zone which have aeration oxygenation and dissolved oxygen indexes meeting, and leads the wastewater to be digested by sufficient aerobic bacteria with full activity. The pool has high and stable removal efficiency and wide adaptability, and is easy to reactivate even if the pool stops running for a short time. The mixed liquid at the bottom of the contact oxidation high-efficiency tank 5 is pumped back into the first-stage high-efficiency anaerobic tank 31 by a sewage reflux pump 35.

The hydrolysis acidification tank, the high-efficiency anaerobic tank and the contact oxidation high-efficiency tank are all internally provided with fillers which have large porous specific surface area, and enrich biological bacteria and membranes. The porous filler is plastic foam porous filler, elastic filler or BF filler.

The sludge sedimentation tank 6 re-sediments sludge from the water treated by the microorganisms at the front section, and clear water is discharged outside and flows into the disinfection filtering tank 7 after the sludge and the water are fully separated, and can be recycled or discharged after disinfection and filtration.

In this embodiment, the disinfection filter tank 7 is connected to an outlet of the chlorine dioxide generator 71, and the disinfectant is supplied to the disinfection filter tank 7 through the chlorine dioxide generator 71.

Part of the sludge in the sludge sedimentation tank 6 can be pumped back to the first-stage high-efficiency anaerobic tank 31 by the sludge return pump 31. Most of the sludge in the sludge settling tank can be sucked and pumped to the sludge dewatering room 8 by a sludge pump. Sludge in the high-efficiency anaerobic tanks at all levels is discharged to the sludge dewatering room 8 by a sludge pump 32.

The sludge dewatering room 8 is internally provided with a belt type dewatering machine, and the sludge dewatering room 8 is provided with a flocculating agent feeding system 9 and a flocculating agent storage. The filter pressing liquid and the washing water generated by the sludge dewatering room 8 are introduced into a sand setting adjusting hydrolysis acidification pool 1; the mud cake generated by dehydration is transported to other places needing to be used as strains, or is used as agricultural and forestry fruit and vegetable fertilizer, or is transported to a garbage site for treatment.

The principle of the utility model is as follows:

the waste water is firstly fished out of various solid slag by manpower, and then is removed with larger suspended matters through a grating and a net; then the sewage enters an oil skimming pool, most of the greasy waste is removed in the oil skimming pool, the discharged water after deslagging and oil skimming enters a sand setting adjustment hydrolysis acidification pool 1, and sediment precipitation and water quality and water quantity adjustment are carried out;

the wastewater enters a water distributor at the bottom area of a first-stage UASB + AF anaerobic tank, the water distributor distributes the wastewater to a 1.00m high-activity anaerobic sludge bed and a 3.00 m anaerobic composite bed reaction area, so that high-concentration organic matters in the wastewater are treated, and the treated wastewater is sequentially treated by a second-stage DSFF anaerobic tank and a third-stage AF anaerobic tank; decomposing most organic matters in the sewage under the action of anaerobic bacteria in the three-stage high-efficiency anaerobic tank; the treated sewage flows to a contact oxidation efficient tank 5, and residual organic matters in the sewage are removed under the action of aerobic bacteria.

The waste/sewage is subjected to anaerobic and aerobic biochemical treatment and purification in the core part, and then is subjected to precipitated sludge separation, and the supernatant is disinfected and recycled or discharged.

The waste/sewage enters a high-efficiency anaerobic tank, namely, the core part of the biochemical treatment of the process flow. Most pollutants in the wastewater are removed in an efficient anaerobic tank through anaerobic decomposition. The produced biogas enters a boiler for incineration after gas-water separation. The supernatant of the high-efficiency anaerobic tank enters a high-efficiency aerobic section for aeration treatment, and most organic pollutants are removed; after the effluent is precipitated and solid-liquid separated, the supernatant can be discharged or reused as cleaning water. Aeration produces a large portion of the sludge to be refluxed to enhance the treatment.

The use method of the utility model is described as follows:

waste water which is discharged from a slaughtering meat factory and is divided into three parts by rain and sewage flow dividing, dry and thin separation and clear and turbid treatment is manually fished to remove various solid residues, and then is subjected to grating and net to remove larger suspended matters; then the waste oil enters an oil skimming pool, most of the grease waste is removed in the oil skimming pool, and the removed grease waste can be processed and utilized and sold as an anticorrosive product;

removing slag, skimming oil and discharging water, and allowing the water to enter a sand setting adjustment hydrolysis acidification pool 1, wherein the sand setting adjustment hydrolysis acidification pool 1 is used for settling silt and adjusting the water quality and water quantity; after the biomass organic wastewater is hydrolyzed and acidified for 2.5 to 5.0 hours in the settling sand adjusting hydrolysis and acidification tank 1, 40 percent, 30 percent and 80 percent of COD, BOD and SS are respectively removed, and then the biomass organic wastewater enters post-treatment. The reactor is combined with a water collecting chamber, a homogenizing adjusting chamber and a pressure adjusting chamber of an anaerobic tank for water treatment into a whole, so that integration of multiple process functions can be realized, the reactor is reduced, and investment, operation and management costs are saved.

The total tank volume of the three-stage anaerobic tank is operated at normal temperature: v = Q × 1.5 × a, a = 3-10; when BOD is less than or equal to 200 mg/L, a is taken as 3; when BOD is more than or equal to 200 mg/L, a is more than 3.

After hydrolysis and three-stage anaerobic treatment, most of biomass organic wastewater generated by slaughter meat plants meets the requirement of irrigation water, even better, and then is treated by an aerobic contact process to further remove residual dirt. In the specific application, the water is recycled as cleaning, cooling and agricultural irrigation water according to local conditions according to the amount of the discharged water, or is stored as fire-fighting water, water for fish culture in ecological ponds and the like.

The sludge generated in each pool is turbid in effluent according to the operation for 1 year to no more than 2 years, is pumped to a sludge dewatering room 8 by a sludge pump pipe for treatment, and is transported to other places needing to be treated as strains, or agricultural and forestry fruit and vegetable fertilizers, or to a garbage dump for treatment.

In practical application, sludge is inoculated, cultured and domesticated, so that the sludge can be quickly started and normally run as soon as possible.

The utility model adopts the high-efficiency anaerobic as the main reason, the produced sludge is few, the mineralization degree is high, the dehydration is easy, the processing device is small, and the corresponding processing cost is also few. The purification treatment is often performed in a closed state, and the operation control and odor control are easy.

Because its waste water contains the sediment height, contains grease also higher, the utility model discloses at first adopt artifical abundant slagging-off, the preliminary treatment measure of grease removal, then adopt high-efficient anaerobism as leading, combine to adopt high-efficient good oxygen technique, add and adopt strong oxidizer disinfection, not only drop into less, energy-conserving productivity is good, can ensure to realize retrieval and utilization and discharge to reach standard target moreover, walk the circular economy pollution control approach that accords with energy saving and emission reduction, sustainable development of scientific development and view.

The present invention is capable of other embodiments and its several details are capable of modification and variation and can be made by those skilled in the art without departing from the spirit and essential attributes of the invention.

Claims

1. Slaughter meat and meat factory waste water purification ecosystem, its characterized in that: comprises a methane gas storage cabinet, a sludge dewatering room, a slag removal grid groove, an oil skimming tank, a sand setting adjusting hydrolysis acidification tank, a multi-stage high-efficiency anaerobic tank, a contact oxidation high-efficiency tank, a sludge sedimentation tank and a disinfection filtering tank which are used for treating wastewater and are sequentially communicated; the biogas of the high-efficiency anaerobic tank is input into a biogas storage cabinet, and a dehydration device and a desulfurization device are arranged between the high-efficiency anaerobic tank and the biogas storage cabinet;

2. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1, wherein: the grit adjusting hydrolysis acidification tank integrates deslagging, grit settling, homogenization, hydrolysis acidification and pH adjustment, a water distributor is arranged at the bottom of the grit adjusting hydrolysis acidification tank, and porous filler is arranged above the water distributor.

3. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1, wherein: the multistage high-efficiency anaerobic tank is a three-stage high-efficiency anaerobic tank.

4. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 3, wherein: the first-stage efficient anaerobic tank is an anaerobic composite sludge bed efficient anaerobic tank; the second-stage efficient anaerobic tank is a flow type fixed biological membrane efficient anaerobic tank; the third-stage high-efficiency anaerobic tank is an up-flow anaerobic filtration high-efficiency anaerobic tank.

5. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1, wherein: an aeration pipe at the bottom of the contact oxidation high-efficiency tank is connected with an air outlet of the Roots blower.

6. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1 or 5, wherein: the efficient anaerobic tank and the contact oxidation efficient tank are internally provided with fillers which have large porous specific surface area, are rich in biological bacteria and membranes.

7. The ecological system for purifying the production wastewater of the slaughter meat complex as claimed in claim 6, wherein: the filler is a plastic foam porous filler, an elastic filler or a BF filler.

8. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1, wherein: a sludge pump is arranged in the sludge sedimentation tank, and the outlet of the sludge pump is connected with a sludge dewatering room.

9. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1, wherein: a belt type dehydrator is arranged in the sludge dewatering room, and filter pressing liquid and washing water generated in the sludge dewatering room are discharged into a sand setting adjusting hydrolysis acidification pool.

10. The ecological system for purifying the production wastewater of the slaughter meat complex according to claim 1, wherein: it also comprises a chlorine dioxide generator, and the outlet of the chlorine dioxide generator is connected with the disinfection filtering tank.