CN208829510U - A kind of high-concentration organic wastewater treatment system - Google Patents
A kind of high-concentration organic wastewater treatment system Download PDFInfo
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- CN208829510U CN208829510U CN201821412487.4U CN201821412487U CN208829510U CN 208829510 U CN208829510 U CN 208829510U CN 201821412487 U CN201821412487 U CN 201821412487U CN 208829510 U CN208829510 U CN 208829510U
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Abstract
The utility model relates to a kind of high-concentration organic wastewater treatment systems, including biochemical treatment unit and advanced treatment unit, advanced treatment unit includes being sequentially connected logical super Magneto separate water body purification apparatus, depth-type filtration equipment and SMRES resin advanced treating complete set of equipments, wherein, biochemical treatment unit is used to carry out biodegrade to high concentrated organic wastewater to be processed, super Magneto separate water body purification apparatus is used for turbid to dephosphorization drop is carried out to waste water, depth-type filtration equipment is used to make the concentration of suspension in waste water to be less than or equal to 10mg/L, SMRES resin advanced treating complete set of equipments is used to carry out adsorption treatment to waste water using SMRES resin；The method processing high concentrated organic wastewater that the utility model is combined using biochemical treatment unit and advanced treatment unit, not only can effectively improve COD and NH in waste water3The removal rate of-N enhances water treatment effect, and is suitable for the different types high concentrated organic wastewaters such as dyeing waste water, papermaking water supply, electroplating wastewater, especially significant to coking water treatment effect.
Description
Technical Field
The utility model relates to a waste water treatment engineering technical field, concretely relates to high concentration organic wastewater treatment system.
Background
The high-concentration organic wastewater contains a large amount of macromolecular organic matters such as carbohydrate, fat, protein, cellulose and the like, and is mainly characterized in that ① organic pollutants have high concentration, the COD value is generally more than 2000mg/L, some macromolecular organic matters even reach tens of thousands to hundreds of thousands mg/L, ② components are very complex and difficult to degrade, toxic substances such as aromatic compounds and heterocyclic compounds are usually contained, sulfides, nitrides, heavy metals, toxic organic matters and the like can be accompanied, ③ the high-concentration organic wastewater has high chromaticity, is often accompanied by pungent smells such as malodor and the like, and can cause adverse effects on the surrounding environment, and ④ the high-concentration organic wastewater has high pH value and is often strongly corrosive.
The high-concentration organic wastewater has great harm to the environment, and is mainly shown in the following aspects: firstly, the organic pollutants consume most of oxygen in the water body in the process of biodegradation, so that the water body is anoxic, aquatic animals and plants die, and stink is generated; secondly, sensory pollution, organic wastewater can cause great influence on the normal life of residents nearby the water body; moreover, the organic wastewater with high concentration contains many toxic organic matters, and serious pollution is caused to water and soil due to the accumulation of the organic wastewater for a long time, thereby threatening the health of human beings.
Then, in the prior art, in the field of wastewater treatment, the treatment of high-concentration organic wastewater is mostly directly carried out by adopting a traditional biochemical system; for high-concentration organic wastewater, good treatment effect is difficult to achieve, wherein the most prominent is that the removal rate of COD by a biochemical system is generally below 80%, the removal rate of NH3-N is low, and national standard discharge is difficult to achieve.
SUMMERY OF THE UTILITY MODEL
For improving the deficiencies existing in the prior art, the utility model discloses the technical scheme who adopts is:
the utility model provides a high concentration organic wastewater treatment system, includes biochemical treatment unit and advanced treatment unit, advanced treatment unit includes super magnetic separation water clarification plant, depth filtration equipment and SMRES resin advanced treatment complete sets, biochemical treatment unit, super magnetic separation water clarification plant, depth filtration equipment and SMRES resin advanced treatment complete sets are linked together in proper order, and wherein, biochemical treatment unit is used for carrying out the biodegradation to the high concentration organic waste water of treating, and super magnetic separation water clarification plant is used for carrying out the dephosphorization to waste water and falls turbid, and depth filtration equipment is used for making the suspended solid concentration in the waste water be less than or equal to 10mg/L, and SMRES resin advanced treatment complete sets is used for adopting the SMRES resin to carry out adsorption treatment to waste water.
Preferably, the ultra-magnetic separation water body purification equipment comprises magnetic coagulation equipment, a magnetic separation magnetic drum and an ultra-magnetic separator, wherein the magnetic coagulation equipment is communicated with the ultra-magnetic separator and is arranged at the upstream of the ultra-magnetic separator, and the magnetic separation magnetic drum is respectively connected with the magnetic coagulation equipment and the ultra-magnetic separator; the magnetic coagulation equipment is used for mixing magnetic seeds with wastewater to form magnetic flocs, the supermagnetic separator is used for separating the magnetic flocs and the wastewater, the magnetic flocs and the wastewater are respectively conveyed to the magnetic separation magnetic drum and the depth filtration equipment, and the magnetic separation magnetic drum is used for recovering the magnetic seeds and conveying the magnetic seeds to the magnetic coagulation equipment.
Preferably, the depth filtering device is one or more of a fiber filter, a D-type filter, a V-type filter and a valveless filter.
Preferably, the advanced treatment plant for the SMRES resin comprises a SMRES resin adsorption device and a SMRES resin regeneration device, wherein the SMRES resin adsorption device is used for further reducing COD in the wastewater and the chromaticity of the wastewater, and the SMRES resin regeneration device is used for desorbing and recycling the resin.
In a preferred scheme, the SMRES resin regeneration equipment comprises a resin desorption device and a desorption liquid treatment device, wherein the resin desorption device desorbs the SMRES resin by adopting a desorption agent to form desorption liquid, the desorption liquid treatment device treats the desorption liquid by adopting iron-carbon micro-electrolysis or Fenton reaction, and the treated desorption liquid is conveyed to the front end of the biochemical treatment unit.
Further, the system also comprises reverse osmosis equipment, wherein the reverse osmosis equipment is connected with the SMRES resin adsorption equipment and is used for further purifying the wastewater through reverse osmosis.
Preferably, the biochemical treatment unit comprises an aerobic tank, a secondary sedimentation tank and a sludge concentration tank, wherein the aerobic tank is communicated with the secondary sedimentation tank and is arranged at the upstream of the secondary sedimentation tank, the secondary sedimentation tank is communicated with the sludge concentration tank, the secondary sedimentation tank is provided with a water outlet, the water outlet is connected with the super-magnetic separation water body purification equipment, the secondary sedimentation tank is used for separating sludge and water and is used for refluxing a part of separated sludge to the aerobic tank, the other part of separated sludge is conveyed to the sludge concentration tank, and the sludge concentration tank is used for concentrating the sludge.
Further, the device also comprises a pretreatment unit which is arranged in front of the biochemical treatment unit and is used for adjusting the water quality and the water quantity of the high-concentration organic wastewater to be treated.
Preferably, the pretreatment unit comprises an adjusting tank and a flotation tank, the adjusting tank is communicated with the flotation tank and arranged at the upstream of the flotation tank, the flotation tank is connected with the biochemical treatment unit, the adjusting tank is used for diluting the wastewater, and the flotation tank is used for removing suspended matters in the wastewater.
Further, still include the deoiling pond, the deoiling pond with the equalizing basin is linked together to set up in the upper reaches of equalizing basin, the deoiling pond is used for deoiling.
Preferably, the oil removal tank is a gravity oil removal tank.
Compared with the prior art, use the utility model provides a pair of high concentration organic wastewater treatment system has following beneficial effect:
1. the utility model adopts the method of combining the biochemical treatment process and the advanced treatment process to treat the high-concentration organic wastewater, which not only can effectively improve COD and NH3The removal rate of N is high, the wastewater treatment effect is enhanced, and the method is suitable for different types of high-concentration organic wastewater such as printing and dyeing wastewater, papermaking water supply, electroplating wastewater and the like, and particularly has a remarkable treatment effect on coking wastewater.
2. The utility model discloses in, advanced treatment process adopts the SMRES resin to carry out advanced treatment process to organic waste water, the adsorption organic matter that the SMRES resin can the large capacity, not only can recycle, thereby effectively reduce the running cost, and can further improve and get rid of the degree of depth of difficult degradation organic matter in the waste water, thereby effectively reduce the COD of waste water, biochemical indexes such as colourity, make the waste water of handling can reach "urban sewage treatment plant pollutant emission standard" (GB18918-2002) one-level emission standard, so that discharge.
3. The ultra-magnetic separation water body purification equipment related in the utility model can adopt a ground fixed type and a movable container type, can effectively meet land shortage, and is convenient for vehicle-mounted movement; the magnetic force in the supermagnetic separation water body purification equipment can reach 640 times of the gravity, the retention time of the wastewater is only 4-6 minutes, and is 1/10-1/20 of the retention time of the wastewater in the traditional process, so that the wastewater can be rapidly and efficiently dephosphorized and turbidity-reduced, and substances such as fine suspended matters, colloids, proteins, microorganisms and the like in the wastewater can be further removed.
4. The utility model discloses in the SMRES resin of adoption, the desorption regeneration is easy, and regeneration time is short, efficient, and resin recycling effect is good, is favorable to getting rid of the degree of depth of difficult degradation organic matter.
5. The utility model discloses in, whole process flow energy consumption is low, convenient operation, easy to manage and maintain, can effectively alleviate operating personnel's intensity of labour.
6. In the utility model, the treated wastewater can be directly discharged after reaching standards, and can further pass through reverse osmosis equipment to obtain effluent meeting the production line reuse water standard; thereby the treated wastewater can be recycled and reused, and the operation cost can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow chart of a process for treating high-concentration organic wastewater provided in embodiment 1 of the present invention.
Fig. 2 is a schematic flow chart of a resin regeneration process in step S3 in the high concentration organic wastewater treatment process provided in embodiment 1 of the present invention.
Fig. 3 is a schematic flow chart of a high concentration organic wastewater treatment process provided in embodiment 1 of the present invention.
Fig. 4 is a system block diagram of a high concentration organic wastewater treatment system provided in embodiment 2 of the present invention.
Fig. 5 is a system block diagram of a supermagnetic separation water body purification device in the high-concentration organic wastewater treatment system provided in embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, this example 1 provides a high concentration organic wastewater treatment process, which includes a biochemical treatment process, a deep treatment process, the biochemical treatment process is disposed before the deep treatment process, wherein,
the biochemical treatment process is used for performing biodegradation on high-concentration organic wastewater to be treated so as to remove organic pollutants in a colloid and dissolved state, such as BOD, COD and the like, in the wastewater;
the advanced treatment process comprises the following steps:
s1, performing super magnetic separation on the effluent after the biochemical treatment process, and removing phosphorus and reducing turbidity of the wastewater;
in this embodiment, the ultra-magnetic separation can be performed in an ultra-magnetic separation water body purification device, which is a device commonly used in the field of ultra-magnetic separation in the prior art; the ultra-magnetic separation water body purification equipment can adopt a ground fixed type and a movable container type, so that the shortage of land can be effectively met, and vehicle-mounted movement is facilitated; the magnetic force in the super-magnetic separation water body purification equipment can reach 640 times of the gravity, the retention time of the wastewater is only 4-6 minutes, and is 1/10-1/20 of the retention time of the wastewater in the traditional process; the method is very efficient, so that the wastewater can be rapidly and efficiently dephosphorized and turbidity-reduced, and substances such as fine suspended matters, colloids, proteins, microorganisms and the like in the wastewater can be further removed;
through the super-magnetic separation, the sludge separated from the wastewater can be treated through a sludge filter press, so that the sludge is convenient to transport.
S2, filtering the effluent after the super-magnetic separation in a filtering device, and further removing suspended matters, colloids, proteins, microorganisms and particulate matters in the wastewater by using a filtering medium in the filtering device to ensure that the concentration of the suspended matters in the filtered effluent is less than or equal to 10 mg/L;
in this embodiment, the effluent after the super magnetic separation may be preferentially introduced into a fiber filter, a D-type filter, a V-type filter, a valveless filter, or other filtering devices for filtering, so as to further remove fine suspended matters, colloids, proteins, microorganisms, and other substances.
S3, performing adsorption treatment on the filtered effluent by using SMRES resin to further remove organic matters which are difficult to degrade in the wastewater;
the physical and chemical stability of the SMRES resin is good, so that the SMRES resin has long service life and has the characteristics of high oxidation resistance, acid and alkali resistance, organic solvent resistance and the like, the SMRES resin can adsorb organic matters with large capacity, the operation cost is effectively reduced, and the deep removal of refractory organic matters in wastewater can be further improved, so that the biochemical indexes of COD (chemical oxygen demand), chromaticity and the like of the wastewater are effectively reduced, the treated wastewater can reach the first-level discharge standard of pollutant discharge Standard of municipal wastewater treatment plants (GB18918-2002), and the treated wastewater can be discharged conveniently.
The effluent after the adsorption treatment can reach the discharge standard and can be directly discharged.
In the embodiment, the method for treating the high-concentration organic wastewater by combining the biochemical treatment process and the advanced treatment process can effectively improve COD (chemical oxygen demand) and NH (NH)3The removal rate of N is high, the wastewater treatment effect is enhanced, and the method is suitable for different types of high-concentration organic wastewater such as printing and dyeing wastewater, papermaking water supply, electroplating wastewater and the like, and particularly has a remarkable treatment effect on coking wastewater.
As shown in fig. 2, in the present embodiment, in step S3, a resin regeneration process is further included after the adsorption treatment, and the resin regeneration process includes the steps of:
s31, desorbing the SMRES resin by using a desorption agent to generate desorption liquid, and recycling the desorbed SMRES resin;
the SMRES resin is easy to desorb and regenerate, short in regeneration time and high in efficiency, and the recycling effect of the SMRES resin is good; therefore, the SMRES resin can be desorbed by using the desorption agent, the desorbed SMRES resin can be recycled, and desorption liquid generated by desorption needs to be further treated.
S32, adopting iron-carbon micro-electrolysis or Fenton reaction to treat the desorption solution, conveying the treated desorption solution to the front end of a biochemical treatment process to be used as wastewater inlet water, namely, inputting the wastewater into the biochemical treatment process for treatment, so that the wastewater (namely, the desorption solution) generated by the high-concentration organic wastewater treatment process can be purified by the desorption solution, and secondary pollution can not be generated.
In this embodiment, the biochemical treatment process (or referred to as a process) may preferably adopt one or more of an activated sludge method, a biofilm method, and an anaerobic biological treatment method. The realization of the activated sludge method, the biomembrane method and the anaerobic biological treatment method is a very mature method in the prior art, and the detailed description is omitted.
In this embodiment, for the high concentration organic wastewater, the biochemical treatment process in the present process may preferably adopt one or more of a deep well aeration method (DSP), an aerobic biological fluidized bed method (ABFB), an a-a/O method (also known as AAO method or A2O method, which is a short term for anaerobic-anoxic-aerobic method, and is a commonly used wastewater treatment process, and may be used for secondary wastewater treatment or tertiary wastewater treatment, and reclaimed water recycling, and has excellent nitrogen and phosphorus removal effects).
In a further embodiment provided by this embodiment, as shown in fig. 3, the method further comprises a pretreatment step, wherein the pretreatment step is performed before the biochemical treatment process, and the pretreatment step is used for adjusting the water quality and the water quantity of the wastewater; so as to reduce the load of subsequent treatment processes (biochemical treatment process and advanced treatment process) and improve the treatment effect; for example, for wastewater containing more oil, the oil in the wastewater can be treated primarily in the pretreatment process; for the occasions needing to adjust the wastewater treatment capacity in unit time, the adjustment can be carried out through dilution water in the pretreatment process; as another example, for wastewater with a high suspended matter content, a significant portion of the suspended matter (usually a large suspended matter) may be removed in a pretreatment process for subsequent treatment.
In this embodiment, the advanced treatment process further includes step S4, performing reverse osmosis treatment on the effluent after the adsorption treatment, wherein the reverse osmosis treatment is used for further purifying the wastewater, and the effluent after the reverse osmosis treatment can generally reach the standard of the production line reuse water, so that the effluent can be directly used as the production line reuse water; the high-concentration organic wastewater generated by the production line can be directly conveyed back to the production line for circulation and reuse after being treated in situ by the process, so that the operation cost of the production line can be effectively reduced.
Example 2
As shown in fig. 4, this example 2 provides a high concentration organic wastewater treatment system based on example 1, which comprises a biochemical treatment unit corresponding to the biochemical treatment process of example 1 and a deep treatment unit corresponding to the deep treatment process of example 1, and in this example:
the advanced treatment unit comprises a super-magnetic separation water body purification device, an advanced filtration device and an SMRES resin advanced treatment complete device, and the biochemical treatment unit, the super-magnetic separation water body purification device, the advanced filtration device and the SMRES resin advanced treatment complete device are communicated in sequence; wherein,
the biochemical treatment unit is arranged at the upstream of the treatment system and is used for performing biodegradation on high-concentration organic wastewater to be treated so as to remove organic pollutants in a colloid and dissolved state in the wastewater, such as BOD, COD, SS and the like which are common in the wastewater; the wastewater treated by the biochemical treatment unit is transmitted to downstream ultra-magnetic separation water body purification equipment;
the ultra-magnetic separation water body purification equipment is used for removing phosphorus and reducing turbidity of wastewater, the depth filtration equipment can further remove substances such as fine suspended matters, colloids, proteins, microorganisms and particulate matters in the wastewater by using a filter medium, so that the concentration of the suspended matters in the wastewater is less than or equal to 10mg/L, and the wastewater treated by the depth filtration equipment is transmitted to downstream SMRES resin depth treatment complete equipment;
the SMRES resin advanced treatment complete equipment adopts the SMRES resin to carry out adsorption treatment on the wastewater, namely the SMRES resin can be adopted to further adsorb organic pollutants in the wastewater, and can be used for further reducing COD (chemical oxygen demand) of the wastewater and chromaticity of the wastewater, so that effluent meeting the discharge standard can be obtained (namely, the treated wastewater can meet the discharge standard of the first-class standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002)); or further performing reverse osmosis by reverse osmosis equipment so as to further purify the wastewater, thereby obtaining effluent meeting the production line reuse water standard; the wastewater treated by the process can be recycled, and the operation cost can be effectively reduced.
The treatment system is efficient, economical and environment-friendly, and is additionally provided with the advanced treatment unit on the basis of the existing wastewater treatment system, so that high-concentration organic wastewater can reach the primary discharge standard, and the treatment system is particularly suitable for treating coking wastewater.
In this embodiment, the biochemical treatment unit may adopt any one of an activated sludge method, a biofilm method, an anaerobic biological treatment method, and the like which are commonly used in the prior art;
for example, in this embodiment, the biochemical treatment unit preferably adopts an activated sludge process, and in one solution provided in this embodiment, the biochemical treatment unit mainly includes an aerobic tank (or called as an aeration tank), a secondary sedimentation tank and a sludge concentration tank, wherein the aerobic tank is communicated with the secondary sedimentation tank and is disposed at the upstream of the secondary sedimentation tank, the secondary sedimentation tank is communicated with the sludge concentration tank, the secondary sedimentation tank is provided with a water outlet, and the water outlet is communicated with the ultra-magnetic separation water purification device in the downstream deep treatment unit; wherein, the aerobic tank (aeration tank) is mainly used for making the wastewater in aerobic condition so as to ensure that aerobic microorganisms in the aerobic tank can fully grow and form floccules for subsequent purification treatment; the secondary sedimentation tank is used for receiving the wastewater conveyed from the aerobic tank, is mainly used for separating mud and water, is used for refluxing a part of separated sludge into the aerobic tank, and conveys the other part of separated sludge to the sludge concentration tank, and the sludge concentration tank is used for concentrating the sludge (mainly concentrating the sludge in a filter pressing mode) so as to reduce the volume and the water content of the sludge, thereby being more convenient for loading and transporting the sludge.
The ultra-magnetic separation water body purification device is a device commonly used in the current wastewater treatment field, and in this embodiment, as shown in fig. 5, the ultra-magnetic separation water body purification device includes a magnetic coagulation device, a magnetic separation magnetic drum and an ultra-magnetic separator, wherein the magnetic coagulation device is communicated with the ultra-magnetic separator and is arranged at the upstream of the ultra-magnetic separator, and the magnetic separation magnetic drum is respectively connected with the magnetic coagulation device and the ultra-magnetic separator; wherein, the magnetic coagulation equipment is used for mixing the magnetic seeds with the wastewater (usually, flocculating agent, coagulant aid and the like are also needed to be added), so that the impurities in the wastewater can also form larger magnetic floccules (or called as magnetic floccules) for subsequent separation; the supermagnetic separator is mainly used for separating the magnetic flocs from the wastewater so as to separate the magnetic flocs from the wastewater, thereby further purifying the wastewater, and is also used for respectively conveying the magnetic flocs and the wastewater to a magnetic separation magnetic drum and a depth filtering device, wherein the magnetic separation magnetic drum is used for recovering magnetic seeds and conveying the magnetic seeds to the magnetic coagulation device; namely, the magnetic separation magnetic drum can separate magnetic seeds from the magnetic floccule separated from the wastewater and transmit the magnetic seeds to the magnetic coagulation equipment; on one hand, the cost can be reduced, the consumption of the magnetic seeds can be reduced, on the other hand, the magnetic seeds can be repeatedly and circularly utilized, and the method is very economic, efficient and environment-friendly.
The sludge separated from the supermagnetic separation water body purification equipment can be treated by a sludge filter press, so that the sludge is convenient to transport.
In a preferred scheme, the depth filtering equipment can adopt one or more of a fiber filter, a D-type filter, a V-type filter and a valveless filter. For example, in this embodiment, the depth filtering device is a fiber filter, and the fiber filter can further filter the wastewater delivered from the ultra-magnetic separator, so as to further remove substances such as fine suspended substances, colloids, proteins, and microorganisms in the wastewater.
In the scheme provided by the embodiment, the advanced treatment plant for SMRES resin comprises an SMRES resin adsorption device and an SMRES resin regeneration device, wherein,
SMRES resin adsorption equipment links to each other with deep filtration equipment, and SMRES resin adsorption equipment adopts the mode of SMRES resin adsorption to further purify waste water, in this embodiment, both can further reduce the COD content of waste water through SMRES resin adsorption equipment, can adjust the colourity of waste water through SMRES resin adsorption equipment again, can finally discharge the effluent that reaches emission standard through SMRES resin adsorption equipment.
And the SMRES resin regeneration equipment is connected with the SMRES resin adsorption equipment and is used for desorbing and recycling the SMRES resin.
Optionally, the reverse osmosis apparatus is connected to a SMRES resin adsorption apparatus for further purifying the wastewater by reverse osmosis.
In a preferred scheme provided by this embodiment, the SMRES resin regeneration device includes a resin desorption device and a desorption solution treatment device, wherein the resin desorption device desorbs the SMRES resin by using a desorption agent, and generates a desorption solution, and the desorbed SMRES resin can be recycled; the desorption liquid treatment device adopts iron-carbon micro-electrolysis or Fenton reaction to treat desorption liquid, and the treated desorption liquid is conveyed to the front end (or the front end) of the biochemical treatment unit to be treated as wastewater.
Example 3
The main difference between embodiment 3 and embodiment 2 is that the treatment system provided in this embodiment further includes a pretreatment unit, the pretreatment unit corresponds to the pretreatment process in embodiment 1, as shown in fig. 4, in this embodiment, the pretreatment unit is connected to the biochemical treatment unit and is disposed upstream (or before) the biochemical treatment unit, and the pretreatment unit is used to adjust the quality and quantity of the high-concentration organic wastewater to be treated, so as to realize pretreatment of the wastewater, so as to reduce the load of the subsequent treatment process and improve the treatment effect.
In this embodiment, the pretreatment unit includes an adjusting tank and a flotation tank, the adjusting tank is communicated with the flotation tank and disposed at the upstream of the flotation tank, the flotation tank is connected with the biochemical treatment unit, specifically, the flotation tank is connected with an aerobic tank in the biochemical treatment unit, the adjusting tank is used for diluting the wastewater, in practice, the main means is to add clean water (or called dilution water) into the adjusting tank, so that the wastewater and the clean water can be fully mixed in the adjusting tank, so as to adjust the water quality and the water quantity of the wastewater to a reasonable (or proper) range, so as to facilitate the normal operation of the subsequent treatment; the flotation tank is used for removing suspended matters in the wastewater; waste water in the equalizing basin can carry the flotation cell of low reaches, can produce a large amount of micro-bubbles in the flotation cell, and micro-bubble can combine together with the suspended solid in the waste water for the suspended solid comes up to the sewage surface (be the upper portion in flotation cell), thereby is convenient for get rid of a large amount of suspended solids in the waste water, realizes the function of preliminary treatment.
In this embodiment, the water (i.e., dilution water) added to the conditioning tank may be derived from treated wastewater and/or additional water, such as recycled water from an external processing industry or domestic sewage.
In a further scheme, still include the deoiling pond, the deoiling pond is linked together with the equalizing basin to set up in the upper reaches of equalizing basin, in the actual process, pending waste water gets into the deoiling pond earlier, then loops through equalizing basin and flotation cell through the deoiling pond, and in this embodiment, the deoiling pond is gravity deoiling pond, mainly is used for detaching the oil in the waste water, so that follow-up waste water treatment.
In summary, the high concentration organic wastewater treatment system provided in this embodiment can divide the treatment process (or called as purification process) of the high concentration organic wastewater into three stages, which are: first-stage: pretreatment and secondary treatment: biochemical treatment process, third stage: a deep treatment process, wherein:
the primary pretreatment is mainly used for adjusting the water quality and the water quantity of the wastewater so as to reduce the load of the subsequent treatment process and improve the treatment effect;
the secondary biochemical treatment process is mainly used for removing colloid and dissolved organic pollutants in sewage.
The three-stage advanced treatment process is mainly used for further removing organic pollutants in sewage, so that a water body reaches the primary discharge standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
Example 4
This example 4 is a specific example of applying the high concentration organic wastewater treatment system provided in example 3 to the treatment of coking wastewater;
determining the scale of coking wastewater treatment and transformation project according to the 140 ten thousand ton scale of coke produced per year in a certain steel mill, and treating the coking wastewater by 75m3H, maximum processing capacity of 80m3The indexes (or called parameters) of raw water (untreated wastewater) entering the treatment system before the high-concentration organic wastewater treatment system is used for wastewater treatment are shown in table 1;
TABLE 1 raw Water indices
Since the coking wastewater is treated in the embodiment, and the oil content in the wastewater is high, an oil removal tank is required to be arranged in the pretreatment stage so as to remove the oil in the wastewater.
In the high-concentration organic wastewater treatment system, in the pretreatment stage, firstly, after the wastewater is deoiled by the deoiling tank, the oil content in the wastewater is reduced to 4.9-6.7 mg/L; secondly, the wastewater and the dilution water enter an adjusting tank to adjust the water quality and the water quantity, at the moment, more than 80 percent of the dilution water adopts the treated coking wastewater as the make-up water to dilute the raw water, a small part of the dilution water adopts industrial circulating water or domestic sewage, and the treated water quantity after dilution is 150m3H; and finally, the wastewater enters a flotation tank to remove a large amount of suspended matters in the wastewater.
In the biochemical treatment process stage, the A-A/O method is adopted for treatment, and the A-A/O method can adopt the process flow commonly used in the prior art, and the implementation is carried out in the methodIn the example, the reflux ratio of the mixed liquid is 100 percent, the organic pollutants in a colloid state and a dissolved state in the sewage are mainly removed, the sludge-water mixture is separated in a secondary sedimentation tank, the supernatant is subjected to coagulating sedimentation, the COD in the wastewater can be reduced to 300-320 mg/L, the SS can be reduced to 130-150 mg/L, and NH is reduced3N is reduced to 117-147 mg/L; 50% of residual sludge generated in the secondary sedimentation tank flows back, the other part of the residual sludge is lifted to a sludge concentration tank, and the concentrated sludge is filter-pressed, loaded and transported outside;
in the advanced treatment process stage, wastewater sequentially passes through a super-magnetic separation water body purification device, an advanced filtration device and an SMRES resin advanced treatment complete equipment, and finally, indexes (or called parameters) treated by the treatment system are shown in table 2;
TABLE 2 indices of the treated wastewater
Comparing table 1 and table 2, it can be known that the treatment system has good treatment effect on high-concentration organic wastewater, and the treated wastewater can reach the first grade A discharge standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
Example 5
This example 5 is a specific example of applying the high concentration organic wastewater treatment system provided in example 3 to the treatment of wastewater discharged from a certain printing and dyeing mill,
since the wastewater discharged from the printing and dyeing mill is treated in this embodiment, the oil content in the wastewater is low (or the wastewater contains almost no oil), so that an oil removal tank is not required to be arranged in the pretreatment stage, and the indexes of the wastewater before and after treatment are specifically shown in table 3;
TABLE 3 comparison of the indices in the wastewater before and after treatment
As can be seen from Table 3, the treatment system has good treatment effect on high-concentration organic wastewater, and the treated wastewater can reach the first-class A emission standard of pollutant emission Standard of municipal wastewater treatment plant (GB 18918-2002).
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a high concentration organic wastewater treatment system, its characterized in that, includes biochemical treatment unit and advanced treatment unit, advanced treatment unit includes super magnetic separation water clarification plant, depth filtration equipment and SMRES resin advanced treatment complete sets, biochemical treatment unit, super magnetic separation water clarification plant, depth filtration equipment and SMRES resin advanced treatment complete sets are linked together in proper order, and wherein, biochemical treatment unit is used for carrying out the biodegradation to the high concentration organic waste water of treating, and super magnetic separation water clarification plant is used for carrying out the dephosphorization to waste water and falls turbid, and depth filtration equipment is used for making the suspended solid concentration in the waste water be less than or equal to 10mg/L, and SMRES resin advanced treatment complete sets is used for adopting the SMRES resin to carry out adsorption treatment to waste water.
2. The high concentration organic wastewater treatment system according to claim 1, wherein the ultra-magnetic separation water body purification device comprises a magnetic coagulation device, a magnetic separation magnetic drum and an ultra-magnetic separator, wherein the magnetic coagulation device is communicated with the ultra-magnetic separator and is arranged at the upstream of the ultra-magnetic separator, and the magnetic separation magnetic drum is respectively connected with the magnetic coagulation device and the ultra-magnetic separator; the magnetic coagulation equipment is used for mixing magnetic seeds with wastewater to form magnetic flocs, the supermagnetic separator is used for separating the magnetic flocs and the wastewater, the magnetic flocs and the wastewater are respectively conveyed to the magnetic separation magnetic drum and the depth filtration equipment, and the magnetic separation magnetic drum is used for recovering the magnetic seeds and conveying the magnetic seeds to the magnetic coagulation equipment.
3. The high concentration organic wastewater treatment system according to claim 1, wherein the depth filtration device is one or more of a fiber filter, a D-type filter, a V-type filter, and a valveless filter.
4. The high concentration organic wastewater treatment system of claim 1, wherein the advanced treatment plant of SMRES resins comprises a SMRES resin adsorption plant for reducing COD in the wastewater and chromaticity of the wastewater and a SMRES resin regeneration plant for desorbing and recycling the SMRES resins.
5. The high concentration organic wastewater treatment system according to claim 4, wherein the SMRES resin regeneration device comprises a resin desorption device and a desorption solution treatment device, the resin desorption device desorbs the SMRES resin by using a desorption agent and forms a desorption solution, the desorption solution treatment device treats the desorption solution by using iron-carbon micro-electrolysis or Fenton reaction, and the treated desorption solution is conveyed to the front end of the biochemical treatment unit.
6. The high concentration organic wastewater treatment system according to claim 1, wherein the biochemical treatment unit comprises an aerobic tank, a secondary sedimentation tank and a sludge concentration tank, the aerobic tank is communicated with the secondary sedimentation tank and is arranged at the upstream of the secondary sedimentation tank, the secondary sedimentation tank is communicated with the sludge concentration tank, the secondary sedimentation tank is provided with a water outlet, the water outlet is connected with the ultra-magnetic separation water body purification device, the secondary sedimentation tank is used for separating sludge and water and is used for returning a part of separated sludge to the aerobic tank and conveying the other part of separated sludge to the sludge concentration tank, and the sludge concentration tank is used for concentrating sludge.
7. The high concentration organic wastewater treatment system as set forth in claim 4, further comprising a reverse osmosis apparatus connected to said SMRES resin adsorption apparatus for purifying wastewater by reverse osmosis.
8. The high concentration organic wastewater treatment system according to any one of claims 1 to 7, further comprising a pretreatment unit disposed before the biochemical treatment unit, the pretreatment unit being for adjusting the quality and quantity of the high concentration organic wastewater to be treated.
9. The high concentration organic wastewater treatment system according to claim 8, wherein the pretreatment unit comprises a conditioning tank and a flotation tank, the conditioning tank is communicated with the flotation tank and is arranged at the upstream of the flotation tank, the flotation tank is connected with the biochemical treatment unit, the conditioning tank is used for diluting wastewater, and the flotation tank is used for removing suspended matters in wastewater.
10. The high concentration organic wastewater treatment system according to claim 9, further comprising an oil removal tank in communication with the conditioning tank and disposed upstream of the conditioning tank, the oil removal tank being configured to remove oil.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108892333A (en) * | 2018-08-30 | 2018-11-27 | 环能科技股份有限公司 | A kind of concentration organic wastewater disposal process and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108892333A (en) * | 2018-08-30 | 2018-11-27 | 环能科技股份有限公司 | A kind of concentration organic wastewater disposal process and system |
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Address after: 610045 No. 3, Wu Xing Road, Chengdu, Sichuan, Wuhou District Patentee after: CSCEC Huanneng Technology Co., Ltd Address before: 610045 No. 3, Wu Xing Road, Chengdu, Sichuan, Wuhou District Patentee before: Ring energy Polytron Technologies Inc |