CN103880193B - Build the method for vertical current constructed wetland processing breeding wastewater based on waterworks sludge - Google Patents

Build the method for vertical current constructed wetland processing breeding wastewater based on waterworks sludge Download PDF

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Publication number
CN103880193B
CN103880193B CN201410137254.8A CN201410137254A CN103880193B CN 103880193 B CN103880193 B CN 103880193B CN 201410137254 A CN201410137254 A CN 201410137254A CN 103880193 B CN103880193 B CN 103880193B
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China
Prior art keywords
breeding wastewater
vertical
artificial swamp
waterworks sludge
artificial
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CN201410137254.8A
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Chinese (zh)
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CN103880193A (en
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裴元生
刘娟凤
王昌辉
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北京师范大学
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

A kind of method that the invention discloses vertical current constructed wetland processing breeding wastewater that is filler based on waterworks sludge, belongs to technical field of sewage. Using after waterworks sludge mummification and fragmentation as filler, build vertical current constructed wetland, for the treatment of high-concentration culture waste water. Breeding wastewater enters in artificial swamp stage by stage, under intermittent aerating condition, and discharge system after certain hydraulic detention time. The present invention can effectively remove the pollutant such as organic matter, nitrogen phosphorus in waste water, and the clearance of ammonia nitrogen and total phosphorus is all higher than 90%. The present invention, in efficient processing livestock breeding wastewater, has also solved the problem of outlet of waterworks sludge, is conducive to realize the target of " treatment of wastes with processes of wastes against one another ", meets the theory of recycling economy and sustainable development.

Description

Build the method for vertical current constructed wetland processing breeding wastewater based on waterworks sludge

Technical field

The invention belongs to Water Pollution Control Engineering technical field of sewage, be specifically related to a kind of vertical current constructed wetland taking waterworks sludge as fillerProcess the method for breeding wastewater.

Background technology

Along with developing rapidly of large-scale cultivation industry, breeding wastewater pollutes more and more serious. The feature of livestock breeding wastewater is high suspended matter, high organicThing and high ammonia nitrogen, biodegradability is strong. At present large-scale cultivation wastewater treatment is adopted to conventional anaerobism-well foster group technology or SBR treatment process conventionally.As application (patent) numbers 201210493586.0 relates to a kind of aerobic reactor that adopts semifixed vehicle treated livestock breeding wastewater; Application (patent)Numbers 201010250262.5 disclose a kind of two-stage anaerobic-tower type filter chamber livestock/poultry wastewater treatment system and processing method; Application (patent) number201010594251.9 disclose a kind of technology of efficiently processing livestock breeding wastewater through anaerobic-aerobic microorganism; Application (patent) number201210108044.7 relate to a kind of livestock and poultry sewage aerobic-anaerobic-aerobic immobilized microorganism biochemical device; Application (patent) numbers 201210240178.4A kind of method of utilizing facultative aerobic membrane bioreactor to process livestock breeding wastewater is disclosed; Application (patent) numbers 201110174168.0 relate to a kind of withThe method of livestock and poultry cultivation anaerobic fermentation natural pond liquid is processed in SBR pond.

Waste water of livestock poultry still contains higher nitrogen and phosphorus after the biological treatment of conventional anaerobic-aerobic, is difficult to reach corresponding discharge standard. If employing thingPhysicochemical measure intensifying treatment effect, can cause high cost. Artificial swamp is a sewage disposal technology that business efficiency is high, practical, toolHave stable effluent quality, treatment effect is good, capital construction operating cost is low, be easy to the advantages such as maintenance, anti impulsion load. The lucky energy of feature of artificial swampMake up the limitation of aquaculture, therefore artificial swamp is also applied to breeding wastewater processing. Artificial swamp is mainly by precipitation, absorption, obstruct, micro-lifeThe approach removal Pollutants in Wastewaters such as thing assimilation decomposes, nitrated, denitrification and plant absorptions etc. As application (patent) numbers 201310290777.1Relate to a kind of artificial wet land system of removing antibiotic and antibiotics resistance gene in breeding wastewater of strengthening; Application (patent) numbers 201010122812.5A kind of constructed wetland plant is disclosed in the application of processing in livestock breeding wastewater.

As the important component part of artificial swamp, filler is for plant and microorganism provides somatomedin, for sewage seepage flow provides good hydraulics,Also can directly remove pollutant by effects such as filtration, absorption and precipitations. Traditional Performance of Constructed Wetlands Substrates (as soil, sand, gravel etc.) adsorptivityCan be poor, be unfavorable for keeping whole artificial wet land system treatment effect continual and steady. A lot of high-efficiency artificial fillers are used to replace traditional people in recent yearsWork wet land filler, obtains good treatment effect. As application (patent) numbers 201110313868.3 discloses a kind of spherical haydite matrix for constructed wetlandAnd preparation method thereof; Application (patent) numbers 201210387343.9 utilizes kaolin, active carbon etc. to prepare dephosphorization adsorbent and is applied to artificial swamp;Application (patent) numbers 201210068231.7 relates to a kind of artificial wet land system taking extra large oyster shell-useless fragment of brick-zeolite as compounded mix.

From above-mentioned analysis, selecting high performance material to process breeding wastewater as filler for artificial swamp will be a kind of development trend. Water supply plant dirtMud is to the safe secondary product in water treatment procedure, mainly by iron-aluminium oxide (hydroxide) or CaCO3And impurity etc. in active carbon and former waterComposition; Have specific area large, iron aluminium content is high, and the pollutants such as phosphorus is had to the feature of stronger adsorption capacity. Therefore, can be by water supply plant dirtMud is back in artificial wet land system and removes the pollutant such as organic matter in breeding wastewater, nitrogen phosphorus, realizes the object of " waste recycling ".

Summary of the invention

1. goal of the invention

Patent of the present invention is for for existing breeding wastewater treatment technology deficiency, proposes a kind of reuse waterworks sludge as Performance of Constructed Wetlands Substrates processingThe method of breeding wastewater.

2. technical scheme

1) water supply plant dewatered sludge is carried out to natural air drying, fragmentation, choose particle diameter at the particle of 1～2cm as Performance of Constructed Wetlands Substrates.

2) artificial swamp building be vertically under to stream, comprise bottom stage and upper segment, be equipped with water inlet in bottom stage and upper segment;

3) clean stone grain is packed in the pillar of bottom stage;

4) micro porous aeration head being connected with air compressor is put on bottom stage stone grain;

5) by step 1) in waterworks sludge be filled in upper segment pillar;

6) breeding wastewater is passed into step 5) in the artificial swamp that builds, in system, intake pump, air compressor and draining pump are by timerControl, can realize water inlet on time, aeration and draining, breeding wastewater is discharged after artificial swamp is processed.

Advantage of the present invention and novelty are embodied in:

1) raw material waterworks sludge of the present invention, belongs to a kind of safe secondary product, have distribution extensively, easily obtain, the advantage such as low cost;

2) the present invention adopt analogue means technique simple, cost is low, easy to operate.

3) the present invention utilizes waterworks sludge to process breeding wastewater as Performance of Constructed Wetlands Substrates, is conducive to realize the target of " treatment of wastes with processes of wastes against one another ", reducesThe cost of disposal of discarded object, meet the demand for development of recycling economy.

Brief description of the drawings

Fig. 1 is the schematic diagram of the vertical current constructed wetland based on waterworks sludge structure in the embodiment of the present invention;

The treatment effeciency figure of the artificial swamp building in Fig. 2 embodiment of the present invention to COD in breeding wastewater;

The treatment effeciency figure of the artificial swamp building in Fig. 3 embodiment of the present invention to ammonia nitrogen in breeding wastewater;

The treatment effeciency figure of the artificial swamp building in Fig. 4 embodiment of the present invention to total nitrogen in breeding wastewater;

The treatment effeciency figure of the artificial swamp building in Fig. 5 embodiment of the present invention to total phosphorus in breeding wastewater.

Detailed description of the invention

Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.

Taking the waste sludge of certain water treatment plant as raw material, in this mud, the content of iron and aluminium is respectively 100 and 50mgg-1, specific area is 78.8m2·g-1. After waterworks sludge mummification, fragmentation, choose the particle of particle diameter 1～2cm as the packing material of artificial swamp. Artificial swamp is by gathering secondAlkene post composition, column internal diameter is 9cm, height 80cm, the bottom stage that clean stone grain is filled into pillar is as supporting layer, and loading is highly 10cm;Then load upper segment, filler floor height 60cm (Fig. 1) with ready waterworks sludge. The quality of filling waterworks sludge is that 2.85kg (containsWater rate is 10.82%), the effective volume V of artificial swamp is 1.8L, porosity is 40%. Artificial swamp adopts segmental influent and intermittent aeratingMode is moved, by intake pump, draining pump and timer control Inlet and outlet water flow and time; Between air compressor is carried out system by timer controlThe aeration of having a rest. Breeding wastewater enters artificial swamp by intake pump from upper strata, system 3 circulations every day, and each circulation divides 3 stages water inlet (water inlet ratioRate is 60%, 30%, 10%), every 160min enters water one time; Each circulation water inlet 0.2L, therefore flow of inlet water is 0.6Ld-1, waterpowerThe time of staying is 3d. Each cyclic aeration 80min simultaneously, makes reactor keep anoxic/aerobic state. The every 8h draining of system once, eachDraining 0.2L. Breeding wastewater is taken from certain vaccary, after suitable dilution as the water inlet of artificial swamp, COD in periodic measurement Inlet and outlet water, ammonia nitrogen,The concentration of total nitrogen and total phosphorus. Breeding wastewater can effectively be removed the pollutant such as organic matter, nitrogen phosphorus in waste water through artificial swamp.

As shown in Figure 2, vertical current constructed wetland raises gradually and tends towards stability the clearance of COD in breeding wastewater, and clearance scope is at 80%-88%Between. Ammonia nitrogen average removal rate reaches more than 90% (Fig. 3), and the clearance of total nitrogen can reach 75%-89% (Fig. 4). The clearance of total phosphorus is rapidRise, then tend to balance gradually, clearance is stable higher than 95% (Fig. 5). Visible under system service condition, the present invention shows breeding wastewaterGo out good COD, nitrogen phosphorus removal effect.

Although it is emphasized that above-described embodiment is to the present invention's detailed explanation of contrasting, these explanations are just illustrative to the present invention,Instead of to the restriction of inventing, any innovation and creation that do not exceed in connotation of the present invention, within all dropping on rights protection scope of the present invention.

Claims (4)

1. one kind builds the side of vertical current constructed wetland processing breeding wastewater based on waterworks sludgeMethod, is characterized in that following steps: using waterworks sludge after air-dry fragmentation as filler,Be applied in vertical current intermittent aerating artificial swamp and process high-concentration culture waste water; Described in buildingVertical current intermittent aerating artificial swamp be vertical under to stream, comprise bottom stage and upper segment, the end of atPortion's section and upper segment are equipped with water inlet; It is artificial that described filler is filled in described vertical intermittent aeratingIn the upper segment pillar of wetland; Stone grain packs the bottom of described vertical intermittent aerating artificial swamp intoSection; The micro porous aeration head being connected with air compressor is positioned at described vertical intermittent aerating artificial swampBottom stage stone grain on.
2. the method for processing breeding wastewater according to claim 1, is characterized in that adoptingFiller be water supply plant waste sludge.
3. the method for processing breeding wastewater according to claim 1, is characterized in that artificialWetland discontinuous aeration, for system provides the reaction condition of aerobic/anoxic.
4. the method for processing breeding wastewater according to claim 1, is characterized in that systemMiddle intake pump, air compressor and draining pump, by timer control, can be realized on time and intake, expose to the sunGas and draining.
CN201410137254.8A 2014-04-08 2014-04-08 Build the method for vertical current constructed wetland processing breeding wastewater based on waterworks sludge CN103880193B (en)

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CN104098186B (en) * 2014-08-01 2015-12-30 徐凯 A kind of immobilized microorganism sewage treatment process
CN104085992B (en) * 2014-08-01 2015-12-02 新昌县镜岭镇柳良轴承厂 A kind of sewage treatment process with warming solar energy effect
CN104085993B (en) * 2014-08-01 2015-12-09 新昌县澄潭镇澄设机械厂 A kind of constructed wetland device
CN105174626A (en) * 2015-09-18 2015-12-23 山东大学 Constructed wetland coupled biological reaction tank purification water-gas system
CN105858870B (en) * 2016-06-08 2019-02-01 中国水利水电科学研究院 A kind of aeration biological filter chamber treatment system with automatic control
CN106540650A (en) * 2016-10-20 2017-03-29 北京师范大学 A kind of preparation method of waterworks sludge base dephosphorization granule adsorbent
CN108911135A (en) * 2018-07-17 2018-11-30 厦门理工学院 A kind of processing method of waste water of livestock poultry

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