CN103833188A - High-suspension easy-to-biochemically treated wastewater treatment method - Google Patents
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- CN103833188A CN103833188A CN201410110027.6A CN201410110027A CN103833188A CN 103833188 A CN103833188 A CN 103833188A CN 201410110027 A CN201410110027 A CN 201410110027A CN 103833188 A CN103833188 A CN 103833188A
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Abstract
The invention discloses a high-suspension easy-to-biochemically treated wastewater treatment method, which is applied to the treatment of various kinds of high-concentration easy-to-biochemically treated organic wastewater. The method comprises the following steps of 1, collecting wastewater, and performing advanced solid-liquid separation in a dissolved air flotation way; 2, performing anaerobic decomposition on the separated wastewater by using anaerobic and facultative tanks; 3, causing the decomposed wastewater to enter an MBR (membrane biological reactor) process system; and 4, disinfecting and sterilizing effluent obtained by an MBR process to discharge water reaching standards by using sodium hypochlorite. According to the wastewater treatment method, high-concentration easy-to-biochemically treated wastewater can be effectively treated, the construction fund can be greatly saved, a small land is occupied, and the method is stable in running, low in cost and particularly suitable for industrial production.
Description
Technical field
The present invention relates to the easy biochemical waste water treatment process of a kind of high density, be specifically related to slaughterhouse wastewater, livestock breeding wastewater, food processing wastewater and city domestic sewage treatment process.
Background technology
China is a country that drought and water shortage is serious, Freshwater resources total amount is 28000 billion cubic meters, account for 6% of global water resources, be only second to Brazil, Russia and Canadian, occupying the 4th, the world, but only have per capita 2300 cubic metres, is only 1/4 of world average level, ranking 121 in the world, is one of 13 countries that water resources is the poorest per capita in the whole world.
After the 1950's, population in the world sharp increase, industrial development is rapid.Global water resources situation worsens rapidly, and " water crisis " is on the rise.On the one hand, the mankind expand with surprising rapidity to the demand of water resources; On the other hand, day by day serious water pollutes to nibble and can supply in a large number the water resources of consumption.According to monitoring, national most urban groundwaters are subject to point-like and facial contamination to a certain extent at present, and have the trend increasing the weight of year by year.The sewage sludge being on the rise has not only reduced the use function of water body, further aggravate the contradiction of shortage of water resources, the strategy of sustainable development that China is being implemented has been brought and has been had a strong impact on, but also serious threat is to city resident's safe drinking water and the people's health.
Water treatment is exactly the former water to not meeting water water quality requirement, improves water quality by methods such as physics, chemistry, biologies, for the production of, life process.Traditional water technology has certain usage range, the Technology difference that the different classes of waste water of congeniality designs, and the difficult Technology of maturation relatively that finds; The uncertainty of water technology, has caused investment high, and fluctuation of service, safeguards complicated predicament.Pursue a kind of maturation, stable, economical and practical Technology is ready to appear.Traditional technology all adopts pre-treatment in conjunction with AO or A2O technique to the easy biochemical waste water of higher suspension, because biochemical treatment is had relatively high expectations to parameters, the unit of the needs control of pre-treatment and rear end biochemical treatment is more, require high to sewage disposal maintenance personnel's specialty, objectively increase the difficulty of sewage disposal, be difficult to guarantee steady running and the qualified discharge of sewage disposal, a lot of Sewage Treatment Projects have become a kind of ornaments, have caused the great wasting of resources and environmental pollution.
Along with the quickening of process of modernization from now on, shortage of water resources will affect Urban water supply.And sewage processing up to standard is a kind of water resources of reliable and stable, reproducible utilization, be an important channel that solves urban water shortage, sewage can be back to the aspects such as industrial and mining enterprises, municipal environmental sanitation, afforestation and city river view after advanced treatment.
Summary of the invention
The technical problem to be solved in the present invention is the defect that overcomes the easy biochemical waste water processing of existing higher suspension, Waste Water Treatment can not steady running, processed waste water can not qualified discharge etc. series of problems, provide one effectively to process pollutent and realized qualified discharge, can reduce investment outlay simultaneously, save the area, stablely not be subject to the Novel waste water treatment method that seasonal temperature affects, working cost is low.
The technical scheme that the present invention takes for its technical problem of solution is:
The easy biochemical waste water treatment process of a kind of high suspended matter, comprises the following steps:
1, waste water is by thickness grid filtration, collect equalizing tank from flowing into, then by sludge pump, the waste water of processing is delivered to air-dissolving air-float and carries out degree of depth solid-liquid separation, waste water adds molysite to carry out flocculation stirring by automatic medicine adding apparatus entering before air supporting, by producing waste water and solids after dissolved air floatation, the solids after separation is compost fermentation or outward transport directly;
2, the waste water after dissolved air floatation enters into anaerobic reation pool and double oxygen reaction tank carries out anaerobic decomposition in turn; Then the waste water after decomposing is entered into MBR technique membrane cisterna; By entering in sterilizing unit after membrane cisterna water outlet, and in sterilizing unit, add the sterilization that carries out disinfection of appropriate clorox to realize qualified discharge.
As preferably, described anaerobic reation pool design scale HRT=48h, described anaerobic reation pool is designed to rectangle, and the degree of depth is 5 meters, waste water adopts flat flow to enter, diving mixer is installed at anaerobic reation pool two ends, and waste water enters end outflow through the front end of anaerobic reation pool and enters into the oxygen reaction tank of holding concurrently.
As preferably, described double oxygen reaction tank design scale HRT=24h; The oxygen reaction tank of holding concurrently is designed to rectangle, and the degree of depth is 5 meters, and waste water adopts upper entering and lower leaving, in described double oxygen reaction tank, micropore aeration pipe uniform aeration is installed, simultaneously at double oxygen reaction tank installation 3 D elastic filler.
As preferably, described MBR technique membrane cisterna is aerobic reaction pond, aerobic reaction pond is designed to rectangle, aerobic reaction tank depth is 5 meters, design scale HRT=24h, waste water through holding concurrently after the anaerobic decomposition of oxygen reaction tank by aerobic reaction pond at the bottom of leading section enter water outlet above rear end, in aerobic reaction pond, bottom even is provided with the microporous aeration device that carries out aerobic treatment, 3 D elastic filler is installed at middle part, aerobic reaction pond simultaneously, the membrane module of shell is immersed in aerobic reaction pond, aspirate by vacuum pump, obtain filtered liquid.
Air-dissolving air-float principle of work:
Air-dissolving air-float (DAF) is pneumatically supported one, it utilizes the characteristic of water different solubility under different pressures, water to all or part of pending (or after processing) pressurizes and aerating, the air dissolves amount that increases water, passes in the water that added coagulating agent, in normal pressure situation, discharges, air is separated out formation small bubbles, stick to impurity wadding grain upper, cause wadding grain global density be less than water and rise, thereby make solid-liquid separation.
Air dissolving system comprises pressure air-dissolving tank, air compressor machine, water pump and auxiliary facility thereof: dissolving mostly is garden tubular, vertical, and volume is pressed retention time of sewage 25～3min and is calculated, and in tank, can be equiped with dividing plate, porcelain ring and so on, also useful slack tank.Air soluble method has two kinds of intake methods, i.e. air inlet after air inlet and pump before pump.We adopt air inlet after pump, and when air imbibed quantity is greater than air at this temperature when the saturation ratio in water, air is pressed at the rising pipe of water pump by air compressor machine, but also should not be greater than 25% of pump sump amount.This method makes pump working stable, and needn't require to work under positive pressure, but need to be by air compressor air supply.In order to guarantee good molten gas effect, the volume of dissolving is also larger, generally needs to adopt more complicated filling type dissolving.
In the mode of employing water sprayer aerating, the key that guarantees dissolving pressure is to adopt suitable water pump, general water-aspirator pressure should be greater than 0.3Mpa under the prerequisite that guarantees rated flow, and the adjustment of dissolving pressure can be by regulating dissolving outlet valve, water pump water outlet valve, recycle control valve to carry out.
Molten gas release system (being mainly release head):
Reliever is the key device of this system, its size, distribution to bubble formation and flotation waste water treatment effect and working cost are all had a significant effect.
The maximum suggestion size in air-dissolving air-float pond can reach 145m2, and corresponding water-yielding capacity is 2900～4350m3/ h, and the water-yielding capacity of unit surface is at least doubled.The degree of depth in air-dissolving air-float pond is increased to 5.0m from 1.5m, and pond type develops to square by rectangle, and long-width ratio is in (1.2～2): between 1.
The residence time of sewage in air flotation pool generally got 30～40min, and operating depth is 15～25m, and long-width ratio is not less than 4, surface load 5～10m3/m2h.
If the residence time is too short, the surging force of current is large, and the stronger turbulent state of sewage board in flotation tank, is so not only unfavorable for the adhesion of bubble and flco, and the flco that part can have been sticked on bubble is on the contrary smashed; In addition, due to turbulent flow and shorter reaction times, and just flow out with water outlet while making the part coagulating agent unreacted that adds complete, cause the clearance reduction of suspended solids in water outlet, even occur the trend of negative growth.
Pond planted agent establishes scraping machine, and the translational speed of scraping machine is preferably 1～5m/min.
MBR technique:
MBR(membrane biological reaction pond) be the new type water treatment technology that of growing up for 20 end of the centurys can control pollution and can realize again resource utilization, it by the application of membrane in separation engineering in active sludge processing system, film separation unit is combined with biochemical treatment unit, replace secondary settling tank and the sand filter in traditional biochemical processing with membrane module, in biochemical reaction, keep high reactivity sludge concentration, reduced again the floor space of sewage treatment facility.
The present invention has following beneficial effect:
The technological innovation of the easy biochemical waste water treatment process of higher suspension that 1, the present invention proposes, use the major techniques such as biochemical technology materialization technology to combine utilization, one or more technique simple combination of not simple use, but multiple compounding technology is organically integrated support mutually, indispensable novel invention research and development form the easy biochemical waste water treatment process of higher suspension, international, domestic all in industry-leading level.Use this all qualified discharge or reuse of technology higher suspension waste water, the powerful economic benefit producing, makes the transition of higher suspension sewage disposal generation matter, is benefit creator by economic consumer qualitative change.
2, integrated packaged technology treatment process is saved great amount of investment fund, is built place and energy consumption, and full intellectualized operation monitoring is controlled, and so high saving, makes this project technology account for the leading height of industry.
3, the integrated technical matters of this project technology, has the multinomial benefit such as powerful economy, resource, the energy, environmental protection and society, in comprehensive benefit also in first place in the world.
Accompanying drawing explanation
Fig. 1 is schema of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated;
The easy biochemical waste water treatment process of a kind of high suspended matter as shown in Figure 1 comprises the following steps:
(1) waste water is by thickness grid filtration, collect equalizing tank from flowing into, be delivered to air-dissolving air-float by sludge pump and carry out degree of depth solid-liquid separation, waste water adds molysite to carry out flocculation stirring by automatic medicine adding apparatus entering before air supporting, to guarantee air-float segregation effect and dephosphorization object, by directly compost fermentation of the solids after dissolved air floatation, after separating, waste water enters next step processing by the road.
(2) waste water after separation enters into anaerobism and double oxygen reaction tank, anaerobic reation pool design scale HRT=48h, oxygen reaction tank design scale HRT=24h holds concurrently, specific descriptions are: anaerobic reaction is designed to rectangle, dark 5 meters of pond, waste water adopts flat flow to enter, diving mixer is installed at the body two ends, pond of anaerobic reation pool, guarantee not sedimentation of mud, waste water enters end outflow through pond body front end and enters into the oxygen reaction tank of holding concurrently, the oxygen reaction tank of holding concurrently is designed to rectangle, dark 5 meters of pond, waste water adopts upper entering and lower leaving, micropore aeration pipe uniform aeration is installed at the bottom of pond, the contact surface of 3 D elastic filler raising mud and water is installed at the oxygen reaction tank of holding concurrently simultaneously.Organism in sludge microbe Decomposition Wastewater in anaerobic environment, is translated into biogas, and biogas is constantly emitted with the form of micro-bubble; Make the mud of anoxic pond be loose condition (of surface) by submersible agitating and microporous aeration device, and fully mix and contact with waste water, the most of organism in waste water is broken down into carbonic acid gas and water in this region.
(3) waste water after anaerobic decomposition enters into immersion MBR process system, specific descriptions are: aerobic reaction pond is designed to rectangle, dark 5 meters of pond, design scale HRT=24h, waste water after anaerobic decomposition by the pond in aerobic reaction pond at the bottom of leading section enter water outlet above rear end, guarantee that sewage fully contacts with active sludge, carry out aerobic treatment at aerobic reaction pond bottom even installation microporous aeration device, 3 D elastic filler is installed at body middle part in pond simultaneously, guarantees the contact area of aerobic sludge and sewage.The membrane module of shell is immersed in aerobic reaction pond, aspirates by vacuum pump, obtain filtered liquid.The efficient crown_interception of film is trapped in aerobic reaction pond microorganism completely, and the activated sludge concentration in aerobic reaction pond can reach 6000 ~ 12000mg/L, guarantees, to organic degradation capability, to have strengthened anti-portative power.Realize separating completely of the aerobic reaction tank waterpower residence time (HRT) and sludge age (SRT) simultaneously, made operation more flexibly stable.
(4) by adding the sterilization that carries out disinfection of appropriate clorox to realize qualified discharge after film water outlet.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention, those ordinary skill in the art's simple change and replacement are all within protection scope of the present invention.
Claims (4)
1. the easy biochemical waste water treatment process of high suspended matter, is characterized in that, comprises the following steps:
(1) waste water is by thickness grid filtration, collect equalizing tank from flowing into, then by sludge pump, the waste water of processing is delivered to air-dissolving air-float and carries out degree of depth solid-liquid separation, waste water adds molysite to carry out flocculation stirring by automatic medicine adding apparatus entering before air supporting, by producing waste water and solids after dissolved air floatation, the solids after separation is compost fermentation or outward transport directly;
(2) waste water after dissolved air floatation enters into anaerobic reation pool and double oxygen reaction tank carries out anaerobic decomposition in turn; Then the waste water after decomposing is entered into MBR technique membrane cisterna; By entering in sterilizing unit after membrane cisterna water outlet, and in sterilizing unit, add the sterilization that carries out disinfection of appropriate clorox to realize qualified discharge.
2. the easy biochemical waste water treatment process of a kind of high suspended matter according to claim 1, it is characterized in that: described anaerobic reation pool design scale HRT=48h, described anaerobic reation pool is designed to rectangle, and the degree of depth is 5 meters, waste water adopts flat flow to enter, diving mixer is installed at anaerobic reation pool two ends, and waste water enters end outflow through the front end of anaerobic reation pool and enters into the oxygen reaction tank of holding concurrently.
3. the easy biochemical waste water treatment process of a kind of high suspended matter according to claim 1, is characterized in that: described double oxygen reaction tank design scale HRT=24h; The oxygen reaction tank of holding concurrently is designed to rectangle, and the degree of depth is 5 meters, and waste water adopts upper entering and lower leaving, in described double oxygen reaction tank, micropore aeration pipe uniform aeration is installed, simultaneously at double oxygen reaction tank installation 3 D elastic filler.
4. the easy biochemical waste water treatment process of a kind of high suspended matter according to claim 1, it is characterized in that: described MBR technique membrane cisterna is aerobic reaction pond, aerobic reaction pond is designed to rectangle, aerobic reaction tank depth is 5 meters, design scale HRT=24h, waste water through holding concurrently after the anaerobic decomposition of oxygen reaction tank by aerobic reaction pond at the bottom of leading section enter water outlet above rear end, in aerobic reaction pond, bottom even is provided with the microporous aeration device that carries out aerobic treatment, 3 D elastic filler is installed at middle part, aerobic reaction pond simultaneously, the membrane module of shell is immersed in aerobic reaction pond, aspirate by vacuum pump, obtain filtered liquid.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402172A (en) * | 2014-11-24 | 2015-03-11 | 富阳鸿祥技术服务有限公司 | Industrial wastewater treatment method |
| CN104609646A (en) * | 2014-12-24 | 2015-05-13 | 三达膜环境技术股份有限公司 | Treatment method of Chinese caterpillar fungus powder wastewater |
| CN104860476A (en) * | 2015-05-18 | 2015-08-26 | 重庆淏园环保科技有限公司 | Technology for efficient denitrification through unpowered backflow |
| CN104944683A (en) * | 2015-05-26 | 2015-09-30 | 浦华环保有限公司 | Treatment system and treatment method for slaughter wastewater |
| CN105000758A (en) * | 2015-07-30 | 2015-10-28 | 天津霍普环保科技有限公司 | Integrated membrane bioreactor |
| CN105081868A (en) * | 2015-08-20 | 2015-11-25 | 深圳市天得一环境科技有限公司 | Cutting liquid recycling equipment and recycling method thereof |
| CN105174617A (en) * | 2015-09-11 | 2015-12-23 | 武汉市宜能环保科技有限公司 | Wastewater advanced treatment system of large-scale pig farm |
| CN105693039A (en) * | 2016-04-18 | 2016-06-22 | 河南力诚环保科技有限公司 | UASB-MBR(up-flowa naerobic sludge bed-membrane bioractor) based high-concentration organic wastewater treatment equipment |
| CN105712575A (en) * | 2016-02-02 | 2016-06-29 | 厦门南卡环境治理有限公司 | Method for treating waste water by replacing activated sludge mixed liquor suspended solids with immobilized microorganisms |
| CN105776548A (en) * | 2016-05-20 | 2016-07-20 | 广州华浩能源环保集团有限公司 | Small sludge improved type MBR integrated treatment method and equipment |
| CN106396251A (en) * | 2016-08-24 | 2017-02-15 | 江苏众胜灭菌设备科技有限公司 | Method for wastewater recovery two stage precipitation reaction |
| CN106986505A (en) * | 2017-05-16 | 2017-07-28 | 湖南美奕机电科技有限公司 | A kind of milk processing factory's sewage treatment equipment |
| CN109437490A (en) * | 2018-12-19 | 2019-03-08 | 安徽科技学院 | A kind of farm's high concentrated organic wastewater innocent treatment equipment |
| CN113072248A (en) * | 2021-03-26 | 2021-07-06 | 江西清绿环保有限公司 | Pig raising wastewater sludge fermentation process |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402172A (en) * | 2014-11-24 | 2015-03-11 | 富阳鸿祥技术服务有限公司 | Industrial wastewater treatment method |
| CN104609646A (en) * | 2014-12-24 | 2015-05-13 | 三达膜环境技术股份有限公司 | Treatment method of Chinese caterpillar fungus powder wastewater |
| CN104860476A (en) * | 2015-05-18 | 2015-08-26 | 重庆淏园环保科技有限公司 | Technology for efficient denitrification through unpowered backflow |
| CN104944683A (en) * | 2015-05-26 | 2015-09-30 | 浦华环保有限公司 | Treatment system and treatment method for slaughter wastewater |
| CN105000758A (en) * | 2015-07-30 | 2015-10-28 | 天津霍普环保科技有限公司 | Integrated membrane bioreactor |
| CN105081868A (en) * | 2015-08-20 | 2015-11-25 | 深圳市天得一环境科技有限公司 | Cutting liquid recycling equipment and recycling method thereof |
| CN105174617A (en) * | 2015-09-11 | 2015-12-23 | 武汉市宜能环保科技有限公司 | Wastewater advanced treatment system of large-scale pig farm |
| CN105712575A (en) * | 2016-02-02 | 2016-06-29 | 厦门南卡环境治理有限公司 | Method for treating waste water by replacing activated sludge mixed liquor suspended solids with immobilized microorganisms |
| CN105693039A (en) * | 2016-04-18 | 2016-06-22 | 河南力诚环保科技有限公司 | UASB-MBR(up-flowa naerobic sludge bed-membrane bioractor) based high-concentration organic wastewater treatment equipment |
| CN105776548A (en) * | 2016-05-20 | 2016-07-20 | 广州华浩能源环保集团有限公司 | Small sludge improved type MBR integrated treatment method and equipment |
| CN106396251A (en) * | 2016-08-24 | 2017-02-15 | 江苏众胜灭菌设备科技有限公司 | Method for wastewater recovery two stage precipitation reaction |
| CN106986505A (en) * | 2017-05-16 | 2017-07-28 | 湖南美奕机电科技有限公司 | A kind of milk processing factory's sewage treatment equipment |
| CN109437490A (en) * | 2018-12-19 | 2019-03-08 | 安徽科技学院 | A kind of farm's high concentrated organic wastewater innocent treatment equipment |
| CN109437490B (en) * | 2018-12-19 | 2021-06-08 | 安徽科技学院 | Harmless treatment equipment for high-concentration organic wastewater in farm |
| CN113072248A (en) * | 2021-03-26 | 2021-07-06 | 江西清绿环保有限公司 | Pig raising wastewater sludge fermentation process |
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Application publication date: 20140604 |