CN102206022A - Physicochemical biological ecological method of system applied to sewage advanced treatment - Google Patents
Physicochemical biological ecological method of system applied to sewage advanced treatment Download PDFInfo
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Abstract
The invention discloses a physicochemical biological ecological method of a system, which is widely applied to sewage advanced treatment and belongs to the field of water treatment. The method comprises the following steps of: introducing sewage to be treated to pass through a grating for removing bigger impurities such as gravels, wood blocks, plastic and the like, and then introducing the sewage to enter a pretreatment pool; mixing and adjusting the sewage in the pretreatment pool, scientifically and reasonably adding a flocculating agent and additionally performing microwave treatment to quickly and efficiently deposit flocculating constituents; introducing the sewage to enter a biological treatment pool, performing ultrasonic wave synergistic aeration treatment for biological reaction; and finally, introducing the sewage to enter a wetland ecological system which mainly consists of plants, animals and microorganisms, performing ecological system treatment, and discharging or recycling. The effluent quality of the sewage subjected to the system advanced treatment is superior to the effluent quality specified in the GB18918-2002 class A and meets the requirement on the water quality of three types of recycled standard surface water. The sewage treatment system can be widely applied to the advanced treatment of domestic sewage, rubbish percolate, industrial sewage and the like.
Description
Technical field
The invention belongs to water treatment field, more specifically relate to a kind of system's materialization bioecology method (PCBES) that advanced treatment of wastewater purifies that is used for, can be widely used in the advanced treatment of sanitary sewage, percolate, industrial sewage etc.
Background technology
China is the relatively country of shortage of water resources, along with expanding economy, and quickening of urbanization process, the urban water shortage problem is on the rise.At present, the development of serious day by day shortage of water resources and water environment pollution puzzlement China economy and society, and become the principal element that restricts social economy's Sustainable development.The water yield of China is not a lot of generally, and exists serious skewness.The per capita water resources of China is 2700 m
3, only be equivalent to 1/4 of world average.Just directly enter water surrounding because the sewage more than 80% is unprocessed, caused the urban waters severe contamination more than 90%, nearly 50% water source, emphasis cities and towns does not meet drinking water standard, even urban groundwater all has 50% to be subjected to severe contamination.Annual in recent years water pollutes and causes direct financial loss to surpass 50,000,000,000 yuan, and indirect financial loss is considerably beyond 1,000 hundred million yuan.Sewage disposal is one of important technique measure of control water environment pollution, and the height of sewage treatment process level will directly influence a geographic quality of water environment.
Since oneth century since water treatment field has produced various technology, the particularly seventies wastewater processing technology obtained rapidly development.The water pollution control of current China presses for a large amount of Appropriate technologies, at the characteristics of the different water pollution control problems in different areas.Wastewater processing technology can be divided into the difference combination of physics method, chemical method, biological process or these three kinds of methods according to the principle of treatment technology.The most frequently used in the physics method method of wastewater treatment is precipitation and filtration process, because low, the technology maturation of its working cost is widely used in the primary treatment and the pre-treatment of waste water.The most frequently used in the chemical method is chemical precipitation and chemical oxidization method.Chemical precipitation method can comprise and be used to remove finely ground particles and colloidal coagulating sedimentation, utilizes that microparticle and colloid form flco in the hydrolysis bridging action of flocculation agent and the water, realizes cleaning action to pollutent by precipitation.Biological process or to be called biochemical process be to be that the basis utilizes the metabolism of microorganism to remove organic pollutant in the waste water with the biochemical theory.These class methods are a large amount of processing methodes that adopt in the present wastewater treatment, comprise various technology, are mainly used in the second-stage treatment and the advanced treatment of waste water.
But present some problems of sewage disposal technology ubiquity, on the one hand, single sewage disposal technology is difficult to satisfy the needs of different quality, different treatment requirement, does not also have a kind of sewage disposal technology can remove all pollution substances in the decontaminated water simultaneously at present on time and space; In addition on the one hand, the biochemical technology end exists sludge treatment complexity, problem that expense is high; And, also have a lot of sewage to contain the chemical substance that is difficult to degradation treatment, general biological or chemical method is difficult to remove.So the difficult degradation chemical pollutant is removed in the scientific combination of multiple technologies technology and optimization, reducing sludge yield is the inexorable trend that addresses this problem.
The utilization of microwave sewage treatment makes single-phase flow and the polyphasic flow fluid generation physical-chemical reaction of microwave field to adding certain medicament, under the effect of micro-wave energy, improve the fluidic temperature and pressure, promote the cohesion between the physical-chemical reaction of material in the water such as katalysis, penetration, the solids strongly; The energy-absorbing of selectivity energy supply and material, catalysed oxidn (as the ferrite reaction takes place), it has intensive absorption, cohesion to the toxic heavy metal in the water, and organism is had intensive oxidation destruction, reductive action and sterilization functions or the like function.Facts have proved that this technology is applied to can overcome in the engineering of water treatment some defectives that exist in the conventional sewage treatment.But, single microwave method, not good to wastewater treatment efficiency, must handle in conjunction with other method or technology synergy.
Ultrasonic wave is meant that frequency surpasses 20 kHz, people's ear unheard sound wave.Ultrasonic wave has had very long history in the application and the research of industries such as organic synthesis, electrochemistry, cleaning, but ultrasonic wave improves biological yield and activity and the applied research in water treatment and then starts from the later stage eighties in biotechnology, in recent years become the focus of research gradually, and obtained some achievements in research.Test shows that low intensive ultrasonic wave has promoter action to biological activity, has very strong advantage on the cavitation effect of ultrasonic waves pollutent in degradation water, the especially Persistent organic pollutants, but not good to removal effects such as COD.
Summary of the invention
The present invention discloses a kind of system's materialization bioecology method (PCBES) that is widely used in advanced treatment of wastewater, this method is with scientific and reasonable combinations such as microwave treatment, the processing of ultrasonic synergistic aeration and biological, ecosystem purifications, the advanced treatment that realizes sewage purifies with efficient, remove the difficult degradation chemical pollutant, good denitrogenation and dephosphorization effect, sludge yield is low, and cost is low, non-secondary pollution.Effluent quality not only is better than the effluent quality of GB18918-2002 one-level A, and can reach the reuse water quality requirement.
The present invention is used for system's materialization bioecology method of advanced treatment of wastewater, carries out according to following step:
(1) pending sewage is removed bulk foreign material such as bigger sandstone, wooden unit, plastics earlier by grid, enters pretreatment pool (A);
(2) in pretreatment pool, carry out sewage and mix, regulate the pH value between 5-9; According to sewage character and feature, select suitable flocculation agent to add in right amount, be aided with microwave treatment, rapidly and efficiently precipitate flocs unit, microwave frequency 500 M-200 G, microwave treatment time 5-20 min., disposing of sewage enters biological treatment tank (B);
(3) dispose of sewage and carry out the ultrasonic synergistic aeration and biological at biological treatment tank and handle biological respinse 2-12 h.; Wherein ultrasonic wave adopts low-intensity ultrasonic, and every aeration ultrasonic synergistic of taking turns is handled ultrasonic frequency 20-1000 kHz, intensity 0.01-10.0 W/cm 3-5 time
2, handle 5-20 min. at every turn; Dispose of sewage then and enter Wetlands ecosystems (C);
(4) Wetlands ecosystems were based on what plant, animal and microorganism were constituted, and aftertreatment sewage carries out the ecosystem in Wetlands ecosystems handles; The plant, animal and the microorganism that constitute Wetlands ecosystems based on ecological principle according to different climatic regions and sewage character and scientific and reasonable selection of feature and combination; Wetlands ecosystems can be made of downstream tank and up pond, the bottom is coarse gravel (Φ=20-50 mm), the middle level is for selecting filler (Φ=5-20 mm), the upper strata is thin river sand or small particle size filler (Φ=0.5-5 mm), the centre is provided with partition wall, the bottom is communicated with, and upper strata, up pond is provided with header, discharging meeting or use water outlet.
Wherein the flocculation agent described in the step (2) is inorganic flocculating agents such as organic floculants such as polyacrylamide, Mierocrystalline cellulose, chitosan or Tai-Ace S 150, aluminum chloride, ferric sulfate, iron(ic) chloride.
Wherein the filler described in the biological treatment tank is mainly mineral filler such as volcanics, limestone, haydite, float stone, perlite and polyvinyl chloride ball/pipe, acrylic sphere/organic fillers such as pipe in the step (3).
Advantage of the present invention: the advanced treatment that can realize sewage purifies with efficient, removes the difficult degradation chemical pollutant, good denitrogenation and dephosphorization effect, and sludge yield is low, and cost is low, non-secondary pollution.Effluent quality not only is better than the effluent quality of GB18918-2002 one-level A, and can reach the reuse water quality requirement; Can also realize the beautification of landscape of sewage disposal place in addition.
Description of drawings: Fig. 1 is used for the schematic flow sheet of system's materialization bioecology method (PCBES) of advanced treatment of wastewater for the present invention.
Embodiment
Embodiment 1:
Pending sewage by grid, is removed bulk foreign material such as bigger sandstone, wooden unit, plastics earlier, enters pretreatment pool (A).In pretreatment pool (B), carry out sewage then and mix, with salt acid for adjusting pH value about 7; It is an amount of to add flocculation agent cationic polyacrylamide (CPAM), is aided with microwave treatment, microwave frequency 500 M, and microwave treatment time 20 min. rapidly and efficiently precipitate flocs unit.Dispose of sewage then and carry out the processing of ultrasonic synergistic aeration and biological, biological respinse 2 h. at biological treatment tank (is filler with the haydite); Wherein ultrasonic frequency 20 kHz, intensity 0.05 W/cm
2, handle 20 min. at every turn; Every aeration ultrasonic synergistic of taking turns is handled 5 times, and disposing of sewage then enters Wetlands ecosystems (C) Ecological Disposal, discharging or reuse water outlet.
Embodiment 2:
Pending sewage by grid, is removed bulk foreign material such as bigger sandstone, wooden unit, plastics earlier, enters pretreatment pool (A).In pretreatment pool (B), carry out sewage then and mix, with salt acid for adjusting pH value about 7; It is an amount of to add flocculation agent cationic polyacrylamide (CPAM), is aided with microwave treatment, microwave frequency 100 G, and microwave treatment time 10 min. rapidly and efficiently precipitate flocs unit.Dispose of sewage then and carry out the processing of ultrasonic synergistic aeration and biological, biological respinse 3 h. at biological treatment tank (is filler with the volcanics); Wherein ultrasonic frequency 500 kHz, intensity 1 W/cm
2, handle 10 min. at every turn; Every aeration ultrasonic synergistic of taking turns is handled 4 times, and disposing of sewage then enters Wetlands ecosystems (C) Ecological Disposal, discharging or reuse water outlet.
Embodiment 3:
Pending sewage by grid, is removed bulk foreign material such as bigger sandstone, wooden unit, plastics earlier, enters pretreatment pool (A).In pretreatment pool (B), carry out sewage then and mix, with salt acid for adjusting pH value about 7; It is an amount of to add flocculation agent cationic polyacrylamide (CPAM), is aided with microwave treatment, microwave frequency 200 G, and microwave treatment time 5 min. rapidly and efficiently precipitate flocs unit.Dispose of sewage then and carry out the processing of ultrasonic synergistic aeration and biological, biological respinse 4 h. at biological treatment tank (is filler with limestone); Wherein ultrasonic frequency 1000 kHz, intensity 10 W/cm
2, handle 5 min. at every turn; Every aeration ultrasonic synergistic of taking turns is handled 3 times, and disposing of sewage then enters Wetlands ecosystems (C) Ecological Disposal, discharging or reuse water outlet.
Test example 1: the invention process example 1 wastewater treatment efficiency
Embodiment 1 is carried out sewage disposal, detect its wastewater treatment efficiency (table 1).
Test example 2: the invention process example 2 wastewater treatment efficiencies
Embodiment 1 is carried out sewage disposal, detect its wastewater treatment efficiency (table 1).
Test example 3: the invention process example 3 wastewater treatment efficiencies
Embodiment 1 is carried out sewage disposal, detect its wastewater treatment efficiency (table 1).
Testing apparatus comprises pretreatment pool (A) (2 m * 2 m * 2 m), biological treatment tank (B) (2 m * 2 m * 2 m), ecosystem treating pond (C) (two 3 continuous m * 3 m * 3 m Wetlands ecosystems ponds, being respectively downstream tank and up pond constitutes, the bottom is 80 mm coarse gravels (Φ=20-50 mm), the middle level is that 100 mm select filler (Φ=5-20 mm), the upper strata is thin river sand of 80 mm or small particle size filler (Φ=0.5-5 mm), and plant is mainly Canna generalis Bailey, calamus, reed etc.) mensuration of index such as COD, BOD5, TP all undertaken by standard method, sample frequency is taken a sample 3 times at least for each steady state.SS is more loaded down with trivial details because of measuring, and when inferior quality concentration poor accuracy, so adopt the turbidity sign.
Table 1 is used for system's materialization bioecology method (PCBES) of advanced treatment of wastewater to sanitary sewage disposal usefulness
Above test-results shows, the system's materialization bioecology method (PCBES) that is used for advanced treatment of wastewater of the present invention is fine to sanitary sewage disposal usefulness, the sewage effluent quality of this system's advanced treatment of process is better than meeting or exceeding the effluent quality of GB18918-2002 one-level A, reaches reuse standard ground 3 class water water quality requirements.
Above-described only is preferred implementation of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, this also should be considered as belonging to protection scope of the present invention.
Claims (3)
1. be used for system's materialization bioecology method of advanced treatment of wastewater, it is characterized in that carrying out according to following step:
(1) pending sewage is removed bulk foreign material such as bigger sandstone, wooden unit, plastics earlier by grid, enters pretreatment pool (A);
(2) in pretreatment pool, carry out sewage and mix, regulate the pH value between 5-9; According to sewage character and feature, select suitable flocculation agent to add in right amount, be aided with microwave treatment, rapidly and efficiently precipitate flocs unit, microwave frequency 500 M-200 G, microwave treatment time 5-20 min., disposing of sewage enters biological treatment tank (B);
(3) dispose of sewage and carry out the ultrasonic synergistic aeration and biological at biological treatment tank and handle biological respinse 2-12 h.; Wherein ultrasonic wave adopts low-intensity ultrasonic, and every aeration ultrasonic synergistic of taking turns is handled ultrasonic frequency 20-1000 kHz, intensity 0.01-10.0 W/cm 3-5 time
2, handle 5-20 min. at every turn; Dispose of sewage then and enter Wetlands ecosystems (C);
(4) Wetlands ecosystems were based on what plant, animal and microorganism were constituted, and aftertreatment sewage carries out the ecosystem in Wetlands ecosystems handles; The plant, animal and the microorganism that constitute Wetlands ecosystems based on ecological principle according to different climatic regions and sewage character and scientific and reasonable selection of feature and combination; Wetlands ecosystems can be made of downstream tank and up pond, the bottom is coarse gravel (Φ=20-50 mm), the middle level is for selecting filler (Φ=5-20 mm), the upper strata is thin river sand or small particle size filler (Φ=0.5-5 mm), the centre is provided with partition wall, the bottom is communicated with, and upper strata, up pond is provided with header, discharging meeting or use water outlet.
2. be used for system's materialization bioecology method of advanced treatment of wastewater, it is characterized in that wherein the flocculation agent described in the step (2) is polyacrylamide, Mierocrystalline cellulose, chitosan or Tai-Ace S 150, aluminum chloride, ferric sulfate, iron(ic) chloride.
3. the system's materialization bioecology method that is used for advanced treatment of wastewater is characterized in that wherein the filler described in the middle biological treatment tank of step (3) is volcanics, limestone, haydite, float stone, perlite or polyvinyl chloride ball/pipe, acrylic sphere/pipe.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291520A (en) * | 2014-08-29 | 2015-01-21 | 温州大学 | Domestic sewage treatment and reuse method |
| CN104355487A (en) * | 2014-10-27 | 2015-02-18 | 无锡伊佩克科技有限公司 | Ecological sewage treatment method |
| CN106430863A (en) * | 2016-12-19 | 2017-02-22 | 宜兴市宜刚环保工程材料有限公司 | Landfill leachate treatment method |
| CN108675554A (en) * | 2018-05-29 | 2018-10-19 | 爱土工程环境科技有限公司 | River water quality puies forward mark method for treating water and system |
| CN111186944A (en) * | 2019-12-30 | 2020-05-22 | 安徽得奇环保科技股份有限公司 | Method, system and device for sewage treatment |
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| US6482327B1 (en) * | 1998-11-20 | 2002-11-19 | Proudo Co., Ltd. | Liquid treating process and apparatus, as well as liquid treating system |
| JP2000263056A (en) * | 1999-03-19 | 2000-09-26 | Proud:Kk | Liquid treatment method and liquid treatment system |
| JP2008041578A (en) * | 2006-08-09 | 2008-02-21 | Honda Electronic Co Ltd | Plasma processing device and plasma processing method |
| CN101602547A (en) * | 2009-06-25 | 2009-12-16 | 大连理工大学 | A kind of method of strengthening the organic wastewater with difficult degradation thereby biological treatment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291520A (en) * | 2014-08-29 | 2015-01-21 | 温州大学 | Domestic sewage treatment and reuse method |
| CN104355487A (en) * | 2014-10-27 | 2015-02-18 | 无锡伊佩克科技有限公司 | Ecological sewage treatment method |
| CN106430863A (en) * | 2016-12-19 | 2017-02-22 | 宜兴市宜刚环保工程材料有限公司 | Landfill leachate treatment method |
| CN108675554A (en) * | 2018-05-29 | 2018-10-19 | 爱土工程环境科技有限公司 | River water quality puies forward mark method for treating water and system |
| CN111186944A (en) * | 2019-12-30 | 2020-05-22 | 安徽得奇环保科技股份有限公司 | Method, system and device for sewage treatment |
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| CN102206022B (en) | 2013-02-06 |
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