CN107986556A - A kind for the treatment of process of high salt concentration low-carbon waste water - Google Patents

A kind for the treatment of process of high salt concentration low-carbon waste water Download PDF

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Publication number
CN107986556A
CN107986556A CN201711147800.6A CN201711147800A CN107986556A CN 107986556 A CN107986556 A CN 107986556A CN 201711147800 A CN201711147800 A CN 201711147800A CN 107986556 A CN107986556 A CN 107986556A
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China
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sewage
waste water
salt concentration
high salt
carrier
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冯丽娟
阳广凤
穆军
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Zhejiang Ocean University ZJOU
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Zhejiang Ocean University ZJOU
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Priority to CN201711147800.6A priority Critical patent/CN107986556A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1263—Sequencing batch reactors [SBR]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The present invention relates to a kind of to handle treatment process of the carbon nitrogen content than the high salt concentration low-carbon waste water of toxic organic pollutant sewage relatively low, containing a large amount of inorganic salts and difficult degradation, its feature is：The beneficial effect of recycling is generated to agricultural wastes material, meets green and healthy environmentally friendly process requirements；During removal of impurities, purification are produced to sewage, poisonous and harmful substance is not produced, meets green and healthy environmentally friendly process requirements；Required processing equipment is simple, and use cost is relatively low；Extremely good clean-up effect can be played to the sewage of high salt concentration, low-carbon, the total removal rate of TN, TP are high, and the removal to harmful organic substance in deep oxidation pond is thorough, there is high purification scavenging effect.

Description

A kind for the treatment of process of high salt concentration low-carbon waste water
Technical field
The present invention relates to a kind of sewage treatment field, more particularly to it is a kind of to handle carbon nitrogen content than it is relatively low, containing big Measure the treatment process of the high salt concentration low-carbon waste water of inorganic salts and the toxic organic pollutant sewage of difficult degradation.
Background technology
In order to alleviate shortage of fresh water, seawater is directly utilized in many countries.But as a large amount of of seawater make With causing the discharge of saline sewage.In addition, some industrial wastewaters, such as printing and dyeing, papermaking, oil, chemical industry and pharmacy, contain There are a large amount of inorganic salts and difficult degradation toxic organic pollutant, the salinity of such sewage is between 3.5% -20%.Work as saline sewage Unprocessed discharge water body, damages aquatic ecosystem；Cause the soil salinization for irrigating, suppress plant growth very To death；Into ground water regime, it is detrimental to health.Have now been found that high salinity significantly suppresses biological wastewater treatment, Sewage treatment facility is caused to be not normally functioning.
The materialization technology of saline sewage mainly has absorption method, UF membrane, ion exchange, electrodialysis etc. at present.But this A little methods are problematic such as of high cost, cause secondary pollution, therefore, under the conditions of these technologies can be only applied to specifically.With This by contrast, biological treatment not only has more preferable economic benefit, but also can avoid the generation of secondary pollution.At biology In reason, it is feasible that the adaptation of activated sludge and the application of salt-durable microbe, which have been proven,.Compared to processing saline sewage With decantation problem, in the reactor that biomembrane contains more biomass to be maintained at relatively small, enhancing reactor bears height The ability of salinity and speed under load.Sequencing batch biofilm reactor（Sequencing batch biofilm reactors, SBBR）The advantages of possessing biofilm reactor and sequencing batch operation mode, and known its is particularly strong and can bear extreme Condition.In recent years, some researches show that under same reactor, aerobic conditions, can complete nitrification and denitrification two at the same time Process, i.e. synchronous nitration and denitrification（SND）.Compared with traditional denitrification process, synchronous nitration and denitrification has technological process letter The advantages that single, easy to manage operation, reactor volume is small, saves additional carbon, and nitric efficiency is high.SBBR is by activated sludge and life The characteristics of thing film is combined, and forms a kind of new complex biofilmreactor, it has SBR and biofilm concurrently, SBBR Apposition growth biomembrane on middle filler, from surface to inside there are dissolved oxygen concentration gradient change, surface for aerobic environment, Inside is micro-environmental hypoxia, and there are aerobic suspended sludge in reactor, and it is high with nitrobacteria growth, biomass is easy to With the advantage of microorganism food chain length, synchronous nitration and denitrification is realized under aerobic condition.
Patent Office of the People's Republic of China authorized in the invention mandate for disclosing a kind of biomembrane sewage processing method in 13 days 2 months in 2013 Notification number is CN102503045B, it uses grit water separator and preaeration tank to carry out preformed precipitate and preaeration, then will locate in advance After sewage after reason is passed through biofilter progress biofilm biofilm, the technique of progress conventional water treatment running, feature exists Biomembrane is prevented in the contact probability that make use of inner labyrinth runner to improve sewage and biomembrane, and using ceramic substrate filler Conglomeration, improves the treatment effeciency of sewage disposal, but it is bad for the wastewater treatment efficiency of high content of salt low-carbon high-nitrogen, carbon source Biomembrane greatly weakens water purification in the case of deficiency, and for organic dirt of some biomembrane difficult degradations Dye thing is not handled effectively.
The content of the invention
To solve the processing of the above-mentioned prior art for high salt concentration low-carbon waste water there are of high cost, secondary pollution is caused Defect, and can not to salinity between 3.5% -20%, the sewage containing a large amount of toxic organic pollutants carry out effectively, thoroughly The problems such as processing, there is provided a kind of handling carbon nitrogen content than relatively low, poisonous organic containing a large amount of inorganic salts and difficult degradation The treatment process of the high salt concentration low-carbon waste water of pollutant sewage.
To achieve the above object, the present invention uses following technical scheme：
A kind for the treatment of process of high salt concentration low-carbon waste water, the treatment process of the high salt concentration low-carbon waste water include following step Suddenly：
1）Physics removal of impurities is carried out to waste water raw water using grid device, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, and the superiors arrange degradable carrier, intermediate layer mixing cloth Put degradable carrier and conventional carrier, the conventional carrier of orlop arrangement, using aeration and the control drainage technology processing of intermittently declining Sewage；
3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and deep oxidation pond carries out adding soluble ferrite, sewage during electrochemicial oxidation Imported after processing in clear water reserviors；
Wherein step 1）The grid device is any one in mechanical grille or artificial grid, wherein step 2）It is described can Degraded carrier is any one in sawdust, rice husk, stalk, sawdust, corncob, bagasse and reed rod, the routine carrier For suspended biological carrier.
Preferably, the step 2）The new sequencing batch biofilm reactor total cycle duration of processing waste water for 7~ 14.5h, wherein 0.5~1h of water inlet, intermittently decline 6~12h of Air Exposure, precipitates 0~0.5h, 0.5~1h of draining, the interval Decline aeration cycle time of aeration system is 3~6h, and single aeration time is 1~2h, single not aeration time for 2~ 4h, dirt water oxygen concentration of ordinary dissolution is 1.0mg/L~2.5mg/L during aeration, and the control draining causes single displacement to account for Zong Shui The 15~30% of amount.
Preferably, single aeration time is preferably 1h, aeration time is not preferably 2h to single.
Preferably, the step 2）With step 2）It is controlled using PCL automatic control systems.
Preferably, step 2）It is 1~4cm that the degradable carrier forms characteristic length beforehand through machining processes Curing materials.
Preferably, the step 3）Electrical current density is 12~20A/m2。
Preferably, step 3）The soluble ferrite is preferably frerrous chloride.
Biofilm, is a kind of waste water aerobic biologic treating technique arranged side by side with activated sludge process, is a kind of fixed embrane method, It is the manual of sewage self-purification of water process and reinforcing, mainly removes deliquescent in the waste water and organic pollution of colloidal. Treatment technology has biofilter (ordinary biofilter, high-loading logical filter, tower biological filter), biological rotating disk, biology to connect Tactile oxidation does not have standby and biological fluidized bed etc..
Activated sludge process is a kind of Aerobic biological process method of sewage, by the Clarke of Britain（Clark）And Gage （Gage）About invented and applied in Mancunian Lao Lunsi sewage experiment station in 1913.Nowadays, activated sludge process and its spread out Raw improved process is the most widely used method of Treating Municipal Sewage.It can remove deliquescent and colloidal state from sewage Biochemical organic matter and can be by the suspended solid of activated sludge absorption and some other material, while can also remove a part of phosphorus Element and nitrogen, are the general designations of the various methods for the microorganism (micro-organism) that biological wastewater treatment suspends in water.And Sequencing batch active sludge is a kind of to ask SBR by intermittent aerating mode come the activated sludge sewage disposal technology that runs, its abbreviation. Its orderly and intermittently operated being mainly characterized by operationally, the core of SBR technologies is sbr reactor pond, which is homogenized, just Heavy, biodegradable, two functions such as heavy are in a pond, no sludge recirculation system.It is particularly suitable for intermittent discharge and changes in flow rate is larger Occasion.
The present invention using new sequencing batch biofilm reactor use be compared to biofilm with it is sequencing batch activated Sludge is more advanced, the sequencing batch biofilm reactor process of collection both advantages, it possesses particularly strong and can bear extreme condition etc. Advantage, in the vertical microorganism form one be made of multiple trophic levels such as bacterium, fungi, algae, protozoan, metazoa Complex Ecological Systems, flow to downstream in the horizontal carrier direction constitute a suspension aerobic, attachment aerobic, attachment Facultative type has a variety of different mobilities, type of respiration, the microflora of nutrient type with attachment anaerobic type, so that greatly The big disposal ability and stability for improving reactor.Runner is in own type three-layered node in the new sequencing batch biofilm reactor Structure, upper strata and intermediate layer are arranged with degradable carrier, and wherein intermediate layer is to be with conventional carrier mixed-arrangement, degradable carrier Agricultural wastes material, its can not only be provided as degradable carrier for the microorganism intervened in filler more nutriment and Living environment advantageously, and the effect of waste utilization is played to a certain extent, avoid a large amount of agricultural wastes materials The pollution or great number processing cost that material burns or artificial treatment produces, are more in line with environmentally protective demand.
The runner of own type enables to sewage and the biology adhered on carrier in the new sequencing batch biofilm reactor Film contact probability higher, and play certain coutroi velocity, cause the more stable effect of effluent flow rate, prevent biomembrane in height It is damaged by impact under fast current, and the clean-up effect played is more preferable.By the way of the aeration that intermittently declines, carrier is enabled to Upper accompanying, growth biomembrane is there are the concentration gradient change of dissolved oxygen from surface to inside, and surface is aerobic environment, inside For micro-environmental hypoxia, and there are aerobic suspended sludge in reactor, and it is high with more easily nitrobacteria growth, biomass With the advantage of microorganism food chain length, synchronous nitration and denitrification is realized under aerobic condition, can largely remove the nothing in decontaminated water Machine salt, the aeration mode that intermittently declines ensure that the oxygen content in reactor is in a kind of best state all the time so that wherein Purification of the microorganism to water quality pollutants such as inorganic salts, disposal ability be in peak state, enhance biomembrane in water quality The clean-up effect of a large amount of inorganic salts pollutants, and interval declines aeration relative to traditional aeration biofilter BAF, can play more Add outstanding Nitrogen/Phosphorus Removal, water outlet COD value is greatly reduced, and water outlet TP contents can also greatly decline, and TP's is total Removal rate is more than 85%.The displacement of optimized control can keep microorganism in new sequencing batch biofilm reactor significantly Biomass and avoid since bioactivity caused by a large amount of drainings such as reduces at the influence that brings, its cleaning water can be made to begin Peak state is in eventually, is had a distinct increment to effects of purification quality and efficiency.
Soluble ferrite is added in deep oxidation pond, and can be produced under power on condition fabulous to toxic organic compound Removing effect, in step 2）In new sequencing batch biofilm reactor it is some it is extremely difficult remove, remove it is incomplete poisonous organic Thing can be by a large amount of decomposition, removal in deep oxidation pond.Under aeration condition, dissolved oxygen concentration rises in deep oxidation pond, and It is powered and the oxygen molecule of dissolved oxygen is sprayed to cathode by anode, and the generation hydrogen peroxide that reacts on cathode, it is produced Hydrogen peroxide molecule the hydroxyl radical free radical with high reactivity, hydroxyl are produced under the ferrous ion catalytic action of divalence Free radical can have an effect with most organic matters makes its degraded, and new sequencing batch biofilm reactor is removed so as to reach In fail the effect of toxic organic compound that thoroughly removes, and do not produce poisonous and harmful substance in this process, met green The requirement of environment-protective process.
The beneficial effects of the invention are as follows：
1）The beneficial effect of recycling is generated to agricultural wastes material, meets green and healthy environmentally friendly process requirements；
2）During removal of impurities, purification are produced to sewage, poisonous and harmful substance is not produced, meeting green and healthy environmentally friendly technique needs Ask；
3）Required processing equipment is simple, and use cost is relatively low；
4）Extremely good clean-up effect can be played to the sewage of high salt concentration, low-carbon, the total removal rate of TN, TP are high, in depth The removal spent in oxidation pond to harmful organic substance is thorough, there is high purification scavenging effect.
Figure of description
Fig. 1 is the schematic diagram of the present invention；
In figure, 1 grid device, 2 grit water separators, 3 new sequencing batch biofilm reactors, the 301 runner the superiors, 302 runners Intermediate layer, 303 runner orlops, 4 deep oxidation ponds, 401 electrodes.
Embodiment
The technical solution in the embodiment of the present invention is clearly and completely retouched with reference to the embodiment of the present invention and attached drawing State, it is clear that described embodiment only part of the embodiment of the present invention, rather than whole embodiments.Based on the implementation in the present invention Example, those of ordinary skill in the art's all other embodiments obtained without making creative work, belongs to Protection scope of the present invention.
Sewage used is all from the industrial wastewater of printworks in embodiment.
A kind of schematic diagram of the treatment process of high salt concentration low-carbon waste water as shown in Figure 1,1 is grid device in figure, Grid device is any one in mechanical grille or artificial grid, and 2 be grit water separator, and 3 is anti-for new sequencing batch biofilm Device is answered, wherein 301 be the runner the superiors, 302 be runner intermediate layer, and 303 be runner orlop, and 4 be deep oxidation pond, and 401 are Electrode set by the middle part of deep oxidation pond,
Embodiment 1
1）Physics removal of impurities is carried out to waste water raw water using mechanical grille, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, and the superiors arrange degradable carrier, intermediate layer mixing cloth Put degradable carrier and conventional carrier, the conventional carrier of orlop arrangement, using aeration and the control drainage technology processing of intermittently declining Sewage, wherein 0.5h of intaking, intermittently decline Air Exposure 6h, precipitates 0h, draining 0.5h, single aeration time is 1h, and single is not Aeration time is 2h, and dirt water oxygen concentration of ordinary dissolution is 1.0mg/L/L during aeration, and control draining causes single displacement to account for total Water 30%；
3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and electrical current density is 12A/m2, when deep oxidation pond carries out electrochemicial oxidation Frerrous chloride is added, sewage is imported in clear water reserviors after processing；
Wherein step 2）The degradable carrier is sawdust, and sawdust characteristic length after processing is 1cm, the routine carrier For suspended biological carrier.
Embodiment 2
1）Physics removal of impurities is carried out to waste water raw water using artificial grid, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, and the superiors arrange degradable carrier, intermediate layer mixing cloth Put degradable carrier and conventional carrier, the conventional carrier of orlop arrangement, using aeration and the control drainage technology processing of intermittently declining Sewage, wherein 1h of intaking, intermittently decline Air Exposure 12h, precipitates 0.5h, draining 1h, single aeration time is 2h, and single does not expose The gas time is 4h, and dirt water oxygen concentration of ordinary dissolution is 2.5mg/L during aeration, and control draining causes single displacement to account for total Water 15%；
3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and electrical current density is 20A/m2, when deep oxidation pond carries out electrochemicial oxidation Frerrous chloride is added, sewage is imported in clear water reserviors after processing；
Wherein step 2）The degradable carrier is rice husk, and rice husk characteristic length after processing is 2cm, the routine carrier For suspended biological carrier.
Embodiment 3
1）Physics removal of impurities is carried out to waste water raw water using mechanical grille, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, and the superiors arrange degradable carrier, intermediate layer mixing cloth Put degradable carrier and conventional carrier, the conventional carrier of orlop arrangement, using aeration and the control drainage technology processing of intermittently declining Sewage, wherein 1h of intaking, intermittently decline Air Exposure 12h, precipitates 0.5h, draining 0.5h, single aeration time is 1h, and single is not Aeration time is 2h, and dirt water oxygen concentration of ordinary dissolution is 2.0mg/L during aeration, and control draining causes single displacement to account for total Water 25%；
3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and electrical current density is 17A/m2, when deep oxidation pond carries out electrochemicial oxidation Frerrous chloride is added, sewage is imported in clear water reserviors after processing；
Wherein step 2）The degradable carrier is stalk, and stalk characteristic length after processing is 4cm, the routine carrier For suspended biological carrier.
Embodiment 4
1）Physics removal of impurities is carried out to waste water raw water using mechanical grille, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, and the superiors arrange degradable carrier, intermediate layer mixing cloth Put degradable carrier and conventional carrier, the conventional carrier of orlop arrangement, using aeration and the control drainage technology processing of intermittently declining Sewage, wherein 0.5h of intaking, intermittently decline Air Exposure 12h, precipitates 0.5h, draining 1h, single aeration time is 1h, and single is not Aeration time is 3h, and dirt water oxygen concentration of ordinary dissolution is 2.2mg/L during aeration, and control draining causes single displacement to account for total Water 25%；
3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and electrical current density is 17.5A/m2, deep oxidation pond carries out electrochemicial oxidation When add frerrous chloride, sewage is imported in clear water reserviors after processing；
Wherein step 2）The degradable carrier is sawdust, and sawdust characteristic length after processing is 1cm, the routine carrier For suspended biological carrier.
Embodiment 5
1）Physics removal of impurities is carried out to waste water raw water using artificial grid, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, and the superiors arrange degradable carrier, intermediate layer mixing cloth Put degradable carrier and conventional carrier, the conventional carrier of orlop arrangement, using aeration and the control drainage technology processing of intermittently declining Sewage, wherein 1h of intaking, intermittently decline Air Exposure 8h, precipitates 0.5h, draining 1h, single aeration time is 2h, and single does not expose The gas time is 2h, and dirt water oxygen concentration of ordinary dissolution is 2.5mg/L during aeration, and control draining causes single displacement to account for total Water 30%；
3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and electrical current density is 18A/m2, when deep oxidation pond carries out electrochemicial oxidation Frerrous chloride is added, sewage is imported in clear water reserviors after processing；
Wherein step 2）The degradable carrier is reed rod, and reed rod characteristic length after processing is 4cm, the routine Carrier is suspended biological carrier.
The water quality that clear water reserviors are imported after the processing of embodiment 1~5 is detected respectively, obtains following testing result：
1）Water outlet COD is detected：COD mean concentrations in 1 water outlet of embodiment are 26.37mg/L, and the average removal rate of COD is 84.98%, the COD mean concentrations in 2 water outlet of embodiment are 26.76mg/L, and the average removal rate of COD is 84.76%, embodiment 3 COD mean concentrations in water outlet are 27.01mg/L, and the average removal rate of COD is 84.62%, and the COD in 4 water outlet of embodiment is averaged Concentration is 26.52mg/L, and the average removal rate of COD is 84.90%, and the COD mean concentrations in 5 water outlet of embodiment are 26.71mg/ The average removal rate of L, COD are 84.79%；
2）Water outlet NH3- N is detected：NH in 1 water outlet of embodiment3- N mean concentrations are 2.14mg/L, NH3The average removal rate of-N is 93.99%, the NH in 2 water outlet of embodiment3- N mean concentrations are 2.09mg/L, NH3The average removal rate of-N is 94.03%, embodiment NH in 3 water outlets3- N mean concentrations are 2.17mg/L, NH3The average removal rate of-N is 93.80%, the NH in 4 water outlet of embodiment3- N mean concentrations are 2.31mg/L, NH3The average removal rate of-N is 93.40%, the NH in 5 water outlet of embodiment3- N mean concentrations are 2.11mg/L NH3The average removal rate of-N is 93.97%；
3）Water outlet TN is detected：TN mean concentrations in 1 water outlet of embodiment are 6.09mg/L, and the average removal rate of TN is 84.77%, TN mean concentrations in 2 water outlet of embodiment are 6.14mg/L, and the average removal rate of TN is 84.65%, the TN in 3 water outlet of embodiment Mean concentration is 6.21mg/L, and the average removal rate of TN is 84.47%, and the TN mean concentrations in 4 water outlet of embodiment are 6.17mg/ The average removal rate of L, TN are 84.57%, and the TN mean concentrations in 5 water outlet of embodiment are 6.01mg/L, and the average removal rate of TN is 84.97%；
4）Water outlet TP is detected：TP mean concentrations in 1 water outlet of embodiment are 0.89mg/L, and the average removal rate of TP is 72.14%, TP mean concentrations in 2 water outlet of embodiment are 0.91mg/L, and the average removal rate of TP is 71.56%, the TP in 3 water outlet of embodiment Mean concentration is 0.86mg/L, and the average removal rate of TP is 73.12%, and the TP mean concentrations in 4 water outlet of embodiment are 0.81mg/ The average removal rate of L, TP are 74.69%, and the TP mean concentrations in 5 water outlet of embodiment are 0.88mg/L, and the average removal rate of TP is 72.50%；
5）Water outlet BOD is detected：BOD mean concentrations in 1 water outlet of embodiment are 4.06mg/L, and the average removal rate of BOD is 85.24%, the BOD mean concentrations in 2 water outlet of embodiment are 4.11mg/L, and the average removal rate of BOD is 85.06%, and embodiment 3 goes out BOD mean concentrations in water are 4.01mg/L, and the average removal rate of BOD is 85.42%, and the BOD in 4 water outlet of embodiment is average dense Spend for 4.19mg/L, the average removal rate of BOD is 84.76%, and the BOD mean concentrations in 5 water outlet of embodiment are 4.21mg/L, BOD Average removal rate be 84.69%.
The embodiment detected value is the average value of ten measurements, and conclusion availability is higher.
The treatment process that can be seen that high salt concentration low-carbon waste water of the present invention from above testing result has at good water Manage effect.

Claims (7)

  1. A kind of 1. treatment process of high salt concentration low-carbon waste water, it is characterised in that the processing work of the high salt concentration low-carbon waste water Skill comprises the following steps：
    1）Physics removal of impurities is carried out to waste water raw water using grid device, and girt-water separation is carried out in grit water separator, then will Sewage imports new sequencing batch biofilm reactor；
    2）Sewage is imported from new sequencing batch biofilm reactor top, is flowed out from lower part, wherein new sequencing batch biofilm is anti- It is three-decker to answer device inner flow passage, and in own font, every layer of volume is equal, the degradable carrier of runner the superiors arrangement, among runner The layer degradable carrier of mixed-arrangement and conventional carrier, the conventional carrier of runner orlop arrangement, using aeration and the control of intermittently declining Drainage technology treated sewage；
    3）Will be through step 2）Sewage after new sequencing batch biofilm reactor processing is imported from deep oxidation pond lower part, depth oxygen Change sets a pair of electrodes to be powered in the middle part of pond, and deep oxidation pond carries out adding soluble ferrite, sewage during electrochemicial oxidation Imported after processing in clear water reserviors；
    Grid device wherein described in step 1 is any one in mechanical grille or artificial grid, wherein step 2）It is described can Degraded carrier is any one in sawdust, rice husk, stalk, sawdust, corncob, bagasse and reed rod, the routine carrier For suspended biological carrier.
  2. A kind of 2. treatment process of high salt concentration low-carbon waste water according to claim 1, it is characterised in that the step 2） The new sequencing batch biofilm reactor processing total cycle duration of waste water is 7~14.5h, wherein 0.5~1h of water inlet, intermittently decline exposure 6~12h of gas disposal, precipitates 0~0.5h, 0.5~1h of draining, and decline aeration cycle time of aeration system of the interval is 3~6h, single aeration time are 1~2h, and aeration time is not 2~4h to single, and dirt water oxygen concentration of ordinary dissolution is during aeration 1.0mg/L~2.5mg/L, the control draining cause single displacement to account for the 15~30% of total Water.
  3. 3. the treatment process of a kind of high salt concentration low-carbon waste water according to claim 2, it is characterised in that when single is aerated Between be preferably 1h, aeration time is not preferably 2h to single.
  4. A kind of 4. treatment process of high salt concentration low-carbon waste water according to claim 1 or 2, it is characterised in that the step Rapid 2）With step 2）It is controlled using PCL automatic control systems.
  5. A kind of 5. treatment process of high salt concentration low-carbon waste water according to claim 1 or 2, it is characterised in that step 2） The degradable carrier forms the curing materials that characteristic length is 1~4cm beforehand through machining processes.
  6. A kind of 6. treatment process of high salt concentration low-carbon waste water according to claim 1 or 2, it is characterised in that the step Rapid 3）Electrical current density is 12~20A/m2。
  7. A kind of 7. treatment process of high salt concentration low-carbon waste water according to claim 1 or 2, it is characterised in that step 3） The soluble ferrite is preferably frerrous chloride.
CN201711147800.6A 2017-11-17 2017-11-17 A kind for the treatment of process of high salt concentration low-carbon waste water Pending CN107986556A (en)

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Application publication date: 20180504