CN106517641B - A kind of paper waste advanced treating based on toxicity reduction and safe ecological use integrated technology - Google Patents

A kind of paper waste advanced treating based on toxicity reduction and safe ecological use integrated technology Download PDF

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CN106517641B
CN106517641B CN201610905171.8A CN201610905171A CN106517641B CN 106517641 B CN106517641 B CN 106517641B CN 201610905171 A CN201610905171 A CN 201610905171A CN 106517641 B CN106517641 B CN 106517641B
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water
layer
wetland
plant
constructed wetland
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CN106517641A (en
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谢显传
秦龙
黄玉
孙捷
李爱民
安树青
买文宁
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Nanjing University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/08Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/14NH3-N
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae

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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)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The paper waste advanced treating and safe ecological use integrated technology that the invention discloses a kind of based on toxicity reduction, technical step are as follows: (1) internal-circulation anaerobic reactor is handled;(2) Fenton fluidized bed processing;(3) Constructed Wetland For Purifying is handled: paper making tail water, which flows through, enters next stage vertical current constructed wetland after surface current artificial wetland is handled, then enter back into Aquatic-plant Pond and purified, finally as Regenerating Landscape water reuse to receiving water body.The present invention carries out science combination and design according to the different technologies advantage and feature of internal-circulation anaerobic reactor, Fenton fluidized bed and artificial swamp, forms a set of paper waste advanced treating that can effectively cut down toxicity and safe ecological use method for integrating technique.The problem of being difficult to realize paper waste qualified discharge and safe ecological use this method solve routine or individual event water treatment technology.

Description

A kind of paper waste advanced treating based on toxicity reduction and safe ecological use are integrated Technology
Technical field
The present invention relates to technical field of waste water processing, specifically a kind of integrated internal circulating anaerobic (IC) reactor, Fenton stream The combination technique for changing the techniques such as bed and artificial swamp, not only can effectively cut down the Conventional pollutions such as COD in paper waste, ammonia nitrogen and refer to Mark, and can significantly reduce tail water bio-toxicity effect, realize the safe ecological use of draining.
Background technique
In recent years, China's paper industry is grown rapidly.Statistical data shows that China's paper in 2013 and production amount have reached 101100000 tons.However, paper industry causes China's water environment pollution problem to become increasingly conspicuous.41 industry of investigation statistics in 2013 In industry, COD (COD) discharge amount of papermaking and paper products industry occupies first place, up to 53.3 ten thousand tons, accounts for 41 industrial rows The 34% of industry total amount.However, papermaking industry only accounts for 2% to the contribution rate of national total industrial output value.According to statistics, the every production 1 in China Ton paper product will generate 20~40 tons of high concentration paper wastes.The problems such as shortage of water resources and environmental pollution is China's papermaking row The primary problem that industry faces at present limits China's paper industry sustainable development.China's in October, 2008 implements " pulping and paper-making Industrial water pollution object discharge standard " (GB3544-2008), certain production scale will be reached by being distinctly claimed papermaking enterprise, and waste water returns Reach 80% or more with rate, waste discharge COD≤80mg/L, BOD5≤20mg/L, SS≤30mg/L, while proposing to toxic dirt Contaminate the emission limit of object-adsorbable organic halogen (AOX), dioxin.Since wastewater treatment difficulty is big, infusion of financial resources is high, waste water Reasons, paper waste advanced treating and the regenerations such as treatment facility runs difficult, management steadily in the long term and operating cost is higher As the first-class problem unanimously thought in paper industry.
Paper-making industrial waste water displacement is big, coloration is high, suspension content is big, organic concentration is high, complicated components, difficulty Reason.Some researches show that, 1 ton of paper pulp of every production in pulping and papermaking processes, by the 2.8-7kg organic halogen speciality of discharge in waste water Such as dichloro- phenol, three chlorinated phenols, four chlorinated phenols and pentachloro- phenol (AOX),.They are mainly the degradation product and a small amount of wood of lignin The catabolite of plain extract and polysaccharide molecule.In addition, in paper chlorination bleaching process, have dibenzo dioxin (DBD), A variety of dioxin toxicants such as dibenzofurans (DBF) generate.Organic halogen (AOX) and dioxin-like chemical are a kind of wide The general persistence toxic chemical pollutant (Persistent Toxic Substances, PTS) existed in the environment has anxious The poisonous effects such as genetoxic, carcinogenic, mutagenesis.The discharge of paper-making industrial waste water is not only big to environmental hazard, more influences dynamic The health of object and the mankind has caused international environmental protection tissue, national governments and the highest attention of the common people.Therefore, one is researched and developed The paper waste advanced treating that kind can effectively cut down bio-toxicity effect has with safe regeneration integrated technology answers well With promotion prospect, good social benefit and environmental benefit will be also obtained.
Summary of the invention
Present invention solves the technical problem that being up to standard using COD and toxicity reduction is target, a kind of paper waste depth is established Processing and safe ecological use integrated technology.It is high to solve paper waste organic concentration, complicated components, and there is certain biology Poisonous effect, routine or individual event water treatment technology are difficult to realize asking for paper waste qualified discharge and safe ecological use Topic.
It is up to standard for the water quality indicators difficulty such as routine or single technology processing paper waste COD, and Tail water reuse is to receiving Water body causes the status of certain bio-toxicity effect, passes through integrated internal circulating anaerobic (IC) reactor, Fenton fluidized bed and artificial The techniques such as wetland, the present invention provide a kind of paper waste advanced treating based on toxicity reduction and safe ecological use integrated technology Method.In the technical method, by internal circulating anaerobic (IC) reactor degradation paper waste middle and high concentration organic matter, significantly reduce COD and Biological Acute Toxicity;By Fenton fluidized bed to the further oxygenolysis of hardly degraded organic substance in waste water, effectively improve useless Water depth processing is horizontal, and the COD index of paper making tail water can reach country " urban wastewater treatment firm pollutant emission standard (GB 18918---2002) " first discharge standard substantially eliminates tail water to the acute toxicity of fish;It is net using the ecology of artificial swamp Change effect, further cuts down pollutant and micro harmful toxic matter in removal paper making tail water, and COD, ammonia nitrogen of wetland effluent etc. are main Index is wanted to can reach national " urban sewage reutilization-water for scenic environment use water quality (GBT18921-2002) " or national " Table quality standard of water environment GB3838-2002 " IV class water standard, the genetoxic of water outlet, class dioxin toxicity, endocrine A variety of chronic toxicities such as interference toxicity are significantly cut down, and finally realize the safe ecological use of draining.
The technical scheme is that a kind of paper waste advanced treating based on toxicity reduction and safe ecological use collection At technology, comprising the following steps:
(1) internal circulating anaerobic (IC) reactor for treatment: the COD load of described internal circulating anaerobic (IC) reactor is 10- 15g/L, temperature are 15-35 DEG C, pH 5.0-8.0, and the COD volumetric loading of reactor requires to reach 10-15.0kg/m3D, water The power residence time reaches 4-24h;
(2) Fenton fluidized bed processing: the Fenton fluidized bed is mainly by conditioning tank, elevator pump and main body reaction tower group At;Wherein, filler is filled in the main body reaction tower, the filler is resin, active carbon, building sand, quartz sand, boiling One of stone, haydite, saponite clast or more than one, filler particles average grain diameter 0.2-4.0mm is anti-based on packing volume Answer the 20%-50% of tower body product;For the control of main body reaction tower pH value in 3.0-4.0, the water flow residence time is 10-60min;
(3) Constructed Wetland For Purifying is handled: the artificial swamp is by surface current artificial wetland and vertical current constructed wetland group At composite constructed wetland system;Paper making tail water, which flows through, enters next stage perpendicular flow artificial after surface current artificial wetland is handled Then wetland enters back into Aquatic-plant Pond and is purified, finally as Regenerating Landscape water reuse to receiving water body;The surface Artificial wetland is mainly made of submerged plant, floatingleaved plant and the emergent aquactic plant planted on packing layer and packing layer, described Packing layer with a thickness of 0.2-0.5m, filler is the gravel that partial size reaches 10-80mm, and filler porosity is 20%-40%;Described Submerged plant is the one or more of water caltrop, eel grass, watermifoil and hornwort, and the floatingleaved plant is water lily, spatterdock, Gorgon euryale One of reality, bog pondweed, floating heart, water chestnut, gold and silver lotus flower and lotus are a variety of, emergent aquactic plant be reed, aquatic iris, calamus, One of thaliadeabata, mullet grass, canna are a variety of, and planting density is 5-15 plants/m2;The vertical current constructed wetland Hypothallus is divided into 3 layers, first layer is gravel layer, height 0.2-0.4m, partial size 5-20mm with a thickness of 0.6-1.0m from bottom to up; The second layer is haydite layer, height 0.2-0.4m, partial size 10-25mm;Third layer is pebble layer, height 0.2-0.4m, partial size 20- 40mm, plant the one or more of reed, canna, Scirpus tabernaemontani or iris on the substrate of vertical-flow constructed wetlands surface layer, plantation Density is 5-15 plants/m2
Further, in the above scheme, the water inlet of step (1) internal circulating anaerobic (IC) reactor for treatment need by Hydrolysis acidification pretreatment.
Further, in the above scheme, it in step (2) the Fenton fluidized bed processing, controls in main body reaction tower Upflow velocity is 30-150m/h, is guaranteed at the top of deflector lower than at the top of filler superposed layer.
Further, in the above scheme, in step (3) the Constructed Wetland For Purifying processing, vertical current constructed wetland system System uses multipoint water feeding mode, and is furnished with water conservancy diversion erosion and deposition pipe-line system.
Further, in the above scheme, the multipoint water feeding mode is specifically: paper making tail water in netted by being evenly arranged on Paper making tail water Multipoint Uniform is imported vertical current constructed wetland by the water pipe line on the substrate of vertical-flow constructed wetlands surface layer, average 1-5m2If a water entry.
Further, in the above scheme, the water conservancy diversion erosion and deposition pipe-line system is self-pressing type;The water conservancy diversion erosion and deposition pipe has The diameter of overflow seepage flow aperture, the overflow seepage flow aperture is 1-3mm, and pitch of holes 600-1000mm is controlled by erosion and deposition valve, with Vertical current constructed wetland water (flow) direction is consistent and is connected with water distributor.
The beneficial effects of the present invention are: high for paper waste organic concentration, complicated components have certain bio-toxicity Equal water quality characteristics, the present invention are excellent according to the different technologies of internal circulating anaerobic (IC) reactor, Fenton fluidized bed and artificial swamp Gesture and feature carry out science combination and design, form a set of paper waste advanced treating that can effectively cut down toxicity and safety ecology Utilize method for integrating technique.This method solve routines or individual event water treatment technology to be difficult to realize paper waste qualified discharge The problem of with safe ecological use, provides scientific and effective technical combinations to solve paper waste waste treatment project.
Specific embodiment
Embodiment 1: certain recycled writing paper manufacturing enterprise wastewater treatment
Handle, after treatment, COD and ammonia nitrogen with paper waste of the method for the present invention to certain recycled writing paper manufacturing enterprise Index can reach surface water III-IV class standard, and the acute toxicity of photogen and zebra fish substantially eliminates, and genetoxic is substantially cut Subtract (water quality data is shown in Table 1).
The water quality data of table 1- recycled writing paper manufacturing enterprise wastewater treatment
Embodiment 2: the wastewater treatment of certain papermaking straw pulp enterprise
It is handled with paper waste of the method for the present invention to certain papermaking straw pulp enterprise, after treatment, COD refers to ammonia nitrogen Surface water III-IV class standard can be reached by marking, and the acute toxicity of photogen and zebra fish substantially eliminates, and genetoxic is substantially cut down (water quality data is shown in Table 2).
The water quality data of table 2- papermaking straw pulp scale wastewater treatment
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.

Claims (2)

1. a kind of paper waste advanced treating based on toxicity reduction and safe ecological use integrated technology, which is characterized in that packet Include following steps:
(1) internal circulating anaerobic (IC) reactor for treatment: the COD load of described internal circulating anaerobic (IC) reactor is 10-15g/ L, temperature are 15-35 DEG C, pH 5.0-8.0, and the COD volumetric loading of reactor requires to reach 10-15.0kg/m3D, waterpower are stopped The time is stayed to reach 4-24h;
(2) Fenton fluidized bed processing: the Fenton fluidized bed is mainly made of conditioning tank, elevator pump and main body reaction tower;Its In, filler is filled in the main body reaction tower, the filler is resin, active carbon, building sand, quartz sand, zeolite, pottery Grain, one of saponite clast or more than one, filler particles average grain diameter 0.2-4.0mm, reaction tower based on packing volume The 20%-50% of volume;For the control of main body reaction tower pH value in 3.0-4.0, the water flow residence time is 10-60min;
(3) Constructed Wetland For Purifying is handled: the artificial swamp is made of surface current artificial wetland and vertical current constructed wetland Composite constructed wetland system;Paper making tail water flows through wet into next stage perpendicular flow artificial after surface current artificial wetland is handled Then ground enters back into Aquatic-plant Pond and is purified, finally as Regenerating Landscape water reuse to receiving water body;The surface stream Artificial swamp is mainly made of submerged plant, floatingleaved plant and the emergent aquactic plant planted on packing layer and packing layer, described For packing layer with a thickness of 0.2-0.5m, filler is the gravel that partial size reaches 10-80mm, and filler porosity is 20%-40%;Described is heavy Water plant is the one or more of water caltrop, eel grass, watermifoil and hornwort, and the floatingleaved plant is water lily, spatterdock, Gorgon euryale One of reality, bog pondweed, floating heart, water chestnut, gold and silver lotus flower and lotus are a variety of, emergent aquactic plant be reed, aquatic iris, calamus, One of thaliadeabata, mullet grass, canna are a variety of, and planting density is 5-15 plants/m2;The vertical current constructed wetland Hypothallus is divided into 3 layers, first layer is gravel layer, height 0.2-0.4m, partial size 5-20mm with a thickness of 0.6-1.0m from bottom to up; The second layer is haydite layer, height 0.2-0.4m, partial size 10-25mm;Third layer is pebble layer, height 0.2-0.4m, partial size 20- 40mm, plant the one or more of reed, canna, Scirpus tabernaemontani or iris on the substrate of vertical-flow constructed wetlands surface layer, plantation Density is 5-15 plants/m2
The water inlet of step (1) internal circulating anaerobic (IC) reactor for treatment need to be pre-processed by hydrolysis acidification;
In step (2) the Fenton fluidized bed processing, the upflow velocity controlled in main body reaction tower is 30-150m/h, guarantees to lead Lower than at the top of filler superposed layer at the top of flowing plate;
In step (3) the Constructed Wetland For Purifying processing, Vertical Flow Constructed Wetland Systems use multipoint water feeding mode, and are furnished with and lead Flow erosion and deposition pipe-line system.
2. a kind of paper waste advanced treating based on toxicity reduction as described in claim 1 and safe ecological use integrate skill Art, which is characterized in that the multipoint water feeding mode is specifically: to be evenly arranged on the perpendicular flow artificial wet by netted for paper making tail water Paper making tail water Multipoint Uniform is imported vertical current constructed wetland, average 1-5m by the water pipe line on ground matrix surface layer2If a water inlet Point;
The water conservancy diversion erosion and deposition pipe-line system is self-pressing type;The water conservancy diversion erosion and deposition pipe has overflow seepage flow aperture, with perpendicular flow artificial Flow in Wetland direction is consistent and is connected with water distributor.
CN201610905171.8A 2016-10-17 2016-10-17 A kind of paper waste advanced treating based on toxicity reduction and safe ecological use integrated technology Active CN106517641B (en)

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CN108996822A (en) * 2018-08-01 2018-12-14 深圳市深投环保科技有限公司 Reach the three-dimensional industrial organic waste water processing method of ground Table IV discharge standard
CN109083112A (en) * 2018-08-07 2018-12-25 山东省农业科学院家禽研究所(山东省无特定病原鸡研究中心) It is a kind of for reducing the ecological canal of paddy field contaminants in drainage

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