CN105217897A - A kind of crop irrigation purifying water process recirculating process - Google Patents
A kind of crop irrigation purifying water process recirculating process Download PDFInfo
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- CN105217897A CN105217897A CN201510747876.7A CN201510747876A CN105217897A CN 105217897 A CN105217897 A CN 105217897A CN 201510747876 A CN201510747876 A CN 201510747876A CN 105217897 A CN105217897 A CN 105217897A
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Abstract
The invention discloses a kind of crop irrigation purifying water process recirculating process, this processing method comprises: wastewater irrigation collecting tank → grid (removing larger suspended substance) → wastewater sedimentation collecting tank → sewage input channel and valve → water pump → hypoxemia membrane reactor → output of purifying waste water → again irrigate, a kind of low aerobic membrane bioreactor of main utilization carries out deep purifying process to agricultural irrigation water, and after making process, water quality reaches pollution-free vegetable irrigation water standard.These processing method energy-conserving and environment-protective, are convenient to implementation and operation, are adapted at irrigation water process field and promote the use of.
Description
Technical field
The invention belongs to sewage disposal recirculation field.
Background technology
China's water resources lacks, per capita water volume that can be utilized is only world occupancy volume per person's 1/4th, and agricultural irrigation water water consumption is huge, as not recycle in addition, not only waste is caused to water resources, cause the state that irrigation water is serious deficient, therefore, irrigation water recycling is inevitable trend simultaneously.But there is the high problem of the harmful substance contents such as colibacillus of excrement, volatile phenol, sulfide, residues of banned pesticides, harmful worm's ovum in traditional irrigation water, recycle again, these objectionable impuritiess not only affect crop growth, pollute crop products, thus jeopardize HUMAN HEALTH.Therefore, how to irrigation water purifying treatment in addition, irrigation water water quality is up to state standards, and is the problem to be solved in the present invention.
Summary of the invention
For solving the problem, after the present invention adopts a kind of crop irrigation purifying water process recirculating process to process agricultural irrigation water, recirculation irrigation.Technical characterstic of the present invention utilizes a kind of low aerobic membrane bioreactor to carry out deep purifying process to agricultural irrigation water, and after making process, water quality reaches national pollution-free vegetable irrigation water standard.Present invention process process is: wastewater irrigation collecting tank → grid (removing larger suspended substance) → wastewater sedimentation collecting tank → sewage input channel and valve → water pump → hypoxemia membrane reactor → output of purifying waste water → again irrigate.
Described low aerobic membrane bioreactor (MBR) is the emerging in the world water technology nineties in 20th century, dirty water living creature processing technique combines with membrane separation technique by it, first the organism in biochemical technology degradation water is utilized, raise and train advantage mushroom, intercept bacterium, then membrane technique is utilized to filter suspended substance and water soluble macromolecular substance, reduce water turbidity, reach emission standard.Water after process can meet the undrinkable water such as greening, flushing and use, and this technology is mainly used in city and Industrial Waste Water Treatments at present.This technology is used for irrigation water process, needs to contain the composition of objectionable impurities according to irrigation water, the factor such as turbidity and discharge selects MBR reactor kind, and adjust accordingly every technical parameter and arrange.Therefore, the present invention is based on above-mentioned each factor, select separated anaerobic membrane bioreactor, and adopt hyperfiltration membrane assembly, appropriate interpolation Powdered Activated Carbon (PAC) and flocculation agent help improve mud-water separation performance, form the mud flco that volume is larger, viscosity is less, decrease the chance of film blocking.Detachable membrane bioreactor bio-reactor and membrane module separated, the mixed solution of membrane bioreactor enters membrane module after supercharging, penetration by liquid film under pressure in mixed solution obtains system water outlet, and active sludge is then trapped, and is back in bio-reactor with concentrated solution.Efficiently retaining by film, not only solves anaerobic sludge and easily to run off the problem causing effluent quality to reduce from membrane bioreactor, and the effect of membrane sepn simultaneously is also embodied in the strengthening aspect of structure to anaerobic reactor and treatment effect.Effect due to membrane sepn makes the acid-producing bacteria concentration in acid-producing gas increase, and improves hydrolysed ferment ability, and larger molecular organics is trapped in acidogenic reactor and makes hydrolysed ferment by film simultaneously, therefore keeps higher acidification rate.
Because sewage carries out the degraded of organic pollutant and being separated of muddy water in described low aerobic membrane bioreactor (MBR) reaction tank, the characteristic that therefore the present invention is directed to irrigation water polluted water has carried out cultivating targetedly and adjusting to the microbe colony inside reaction tank.
Described wastewater irrigation collecting tank is for the ease of collecting wastewater irrigation, and it builds physical features lower than irrigated land, therefore before wastewater irrigation input hypoxemia membrane reactor, needs to add the pressure that water pump increases sewage, reaches the intake pressure of hypoxemia membrane reactor requirement.
Embodiment
At present, to the irrigation system application hypoxemia Membrane Bioreactor for Wastewater Treatment wastewater irrigation in 100 mu of Vegetable produce regions, one group of apparatus for treating sewage disposes of sewage 50 tons every day, and the water quality after process is good and stable, can direct reuse, and water quality reaches GB18918-2002 one-level A standard.Embodiment is: according to irrigated area area reckoning duty, builds wastewater irrigation collecting tank and wastewater sedimentation collecting tank on this basis, then determines to need to install a few group reaction device according to selected reactor model.In sewage collecting pool outlet, grid is installed to be used for removing larger suspended substance simultaneously, afterwards sewage collecting pool, wastewater sedimentation collecting tank are connected by pipeline with hypoxemia membrane reactor, the Valve controlling water yield is all equipped with at sewage collecting pool, wastewater sedimentation collecting tank entrance and exit place, before hypoxemia membrane reactor, water pump is housed, in order to raising of water level.
The backwash of hypoxemia membrane reactor is controlled automatically by PLC, and mud output is little, and human users manages as easy as rolling off a log, is applicable to very much field operation; Therefore this processing method not only energy-conserving and environment-protective, and simple, be adapted at irrigation water process field and promote.
Claims (4)
1. a crop irrigation purifying water process recirculating process, this processing method comprises: wastewater irrigation collecting tank → grid (removing larger suspended substance) → wastewater sedimentation collecting tank → sewage input channel and valve → water pump → hypoxemia membrane reactor → output of purifying waste water → again irrigate, it is characterized in that: utilize a kind of low aerobic membrane bioreactor to carry out deep purifying process to agricultural irrigation water, after making process, water quality reaches national pollution-free vegetable irrigation water standard.
2. method according to claim 1, is characterized in that: select separated anaerobic membrane bioreactor, and adopt hyperfiltration membrane assembly, adds Powdered Activated Carbon (PAC) in right amount and helps improve mud-water separation performance with flocculation agent.
3. method according to claim 2, is characterized in that: to cultivate targetedly the microbe colony inside reaction tank for irrigating the characteristic of polluted water and adjust.
4. method according to claim 1, is characterized in that: before hypoxemia membrane reactor, add the pressure that water pump increases sewage, reach the intake pressure of described reactor requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510747876.7A CN105217897A (en) | 2015-11-06 | 2015-11-06 | A kind of crop irrigation purifying water process recirculating process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510747876.7A CN105217897A (en) | 2015-11-06 | 2015-11-06 | A kind of crop irrigation purifying water process recirculating process |
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| CN105217897A true CN105217897A (en) | 2016-01-06 |
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| CN201510747876.7A Pending CN105217897A (en) | 2015-11-06 | 2015-11-06 | A kind of crop irrigation purifying water process recirculating process |
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Cited By (3)
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|---|---|---|---|---|
| CN106186528A (en) * | 2016-08-04 | 2016-12-07 | 缪琼华 | A kind of processing method of plant husbandry waste water |
| CN106508609A (en) * | 2016-11-11 | 2017-03-22 | 江苏大学 | Purification and spray irrigation system for polluted irrigating water |
| CN108793574A (en) * | 2018-06-28 | 2018-11-13 | 贵州大学 | A kind of river and lake effluent treatment plant for agricultural irrigation |
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| CN106508609A (en) * | 2016-11-11 | 2017-03-22 | 江苏大学 | Purification and spray irrigation system for polluted irrigating water |
| CN108793574A (en) * | 2018-06-28 | 2018-11-13 | 贵州大学 | A kind of river and lake effluent treatment plant for agricultural irrigation |
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