CN104326555A - Northern rural domestic wastewater composite treatment system and northern rural domestic wastewater composite treatment method - Google Patents
Northern rural domestic wastewater composite treatment system and northern rural domestic wastewater composite treatment method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
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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
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to northern rural domestic wastewater composite treatment system and a northern rural domestic wastewater composite treatment method. The system comprises a water inlet tank, a biological moving bed, an adjusting pond and an underground infiltration system, wherein the water inlet tank is communicated with the biological moving bed by virtue of a water inlet pump, a water outlet pipe connected with the biological moving bed is inserted into the bottom of the adjusting pond, and the adjusting pond is communicated with a water inlet of the underground infiltration system; the water inlet tank, the biological moving bed and the adjusting pond are arranged in an insulating greenhouse. The method comprises the following steps: (1) carrying out biofilm culturing in the biological moving bed; (2) introducing the northern rural domestic wastewater, introducing air into aerating heads of the biological moving bed by virtue of an air pump and introducing surface-source wastewater treated to the adjusting pond; and (3) introducing upper rinsing water on the top of the adjusting pond to the underground infiltration system. The system and method provided by the invention are simple to operate, small in integral occupied area and less in investment, and the treatment rate on ammonia nitrogen and total phosphorus reaches 10% and the COD (chemical oxygen demand) removal rate reaches over 95%. Routine maintenance and management of the system are convenient and the application prospect is wide.
Description
Technical field
The invention belongs to environmental protection technical field, particularly a kind of northern country sanitary sewage multiple treating system and method.
Background technology
China has more than 60 ten thousand administrative villages, more than 250 ten thousand natural villages at present, and peasant household more than 200,000,000 of living, nearly 800,000,000 people, the sewage produced urgently rationally processes.Domestic sewage in rural areas mainly comprises 2 aspects: kitchen tools cooking water, shower, bath water and use water of flushing the toilet, mainly containing organism, nitrogen and phosphorus and bacterium, virus, parasite etc.; Ight soil, waste water that the cultivation of urban residents and livestock and poultry cultivation produce, mainly containing the pollutent such as nitrogen, phosphorus and BOD5, COD, suspended substance; Because inhabitants live compares dispersion, the process of domestic sewage in rural areas inconvenience centralized collection, add that various places fiscal revenue are limited, unable construction sanitary sewers network processing system and wastewater reuse approach facility, unprocessed being just directly discharged in river, lake of domestic sewage in rural areas is gone, not only causes the decline of river and lake water quality, also pollute soil and groundwater simultaneously, have a strong impact on the ecotope of Rural areas, and to the quality of life of the people with healthyly constitute harm.
China to the improvement of decentralized wastewater from last century Mo just be familiar with and paid attention to gradually; In recent years, achieve in the domestic technical study at dispersed domestic sewage treatment and Applied D emonstration and develop faster, domestic sewage in rural areas generally distribute comparatively disperse, remote, the water yield day/hourly variation factor is larger, and concentrate laying pipe network capital cost too high, and easily cause secondary pollution, need process further secondary pollutant or dispose; Separated practices pattern can accomplish to be utilized by sewage recycling with suiting measures to local conditions on the spot, is conducive to the natural circulation of material, has the effect of beautifying the environment simultaneously concurrently.At present, Rural Plane Source Pollution must observe following 4 principles in administering: total amount is cut down and combined with process control; Pollution abatement is combined with nutrient reutilization; Technical study is combined with engineer applied; Pollutent management is combined with Ecological Civilization Construction; Conventional Technology has buried with/without power Anaerobic Methods in Treating, Rapid Infiltration Treatment System, purification tank technology, purifying marsh gas pool technology, earthworm and ecological filter, Using High-Rate Algae Pond, membrane biological reactor process, artificial swamp (comprising surface water, undercurrent, vertical current) technology, integrated treatment unit and underground sewage percolating system.
The technological process of biological moving bed process is directly added in reactor by the floating stuffing of density close to water, as the carrier of microorganism growth attachment, carry out biofilm under certain condition, make filler to adhere to a large amount of microorganism, then in reactor, dirty water and air is passed into continuously, and create good mixing contact conditions, the microorganism perched on filling surface constantly absorbs water oxygen and organism, thus reaches the object of purifying waste water; The biomembrane activity of biological moving bed is high, organic matter removal excellent in efficiency, has stronger denitrogenation dephosphorizing function, less excess sludge production; And this technique filtrate can not block, without the need to regular back flushing, without the need to sludge reflux, simple to operate.
The technological process of subsurface wastewater infiltration system is when sanitary sewage is by subsurface infiltration device, soil particle retains the suspended matter in waste water, microorganism is bred very soon, and the material of suspended matter, colloid and the dissolved state of these microorganisms again further in planar water, forms microbial film gradually.For different waste water, climatic condition and soil depth, microbe population on microbial film and kind are also different, microbial film has very large surface-area, the organism in waste water can be adsorbed in a large number, while organism is degraded by microorganisms, the microbial film on soil particle surface is constantly updated due to metabolism, therefore can keep the removal effect to pollution substance for a long time.
The process of current existing northern country regional waste-water, due to weather and equipment, does not also form treatment process that is efficient, environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of northern country sanitary sewage multiple treating system and method, by biological moving bed and subsurface wastewater infiltration system are carried out organic assembling, and attemperator is set, the processing efficiency of source, face, rural area sewage is improved under the condition that north of china in winter is comparatively cold, prevent system cloud gray model fault, the universality of enhanced system application.
Northern country sanitary sewage multiple treating system of the present invention comprises inlet chest, biological moving bed, equalizing tank and subsurface wastewater infiltration system; Inlet chest is communicated with the water-in of biological moving bed by intake pump, and the water outlet of biological moving bed connects a rising pipe, and rising pipe inserts bottom equalizing tank, and the water outlet of equalizing tank is communicated with the water-in of subsurface wastewater infiltration system; Inlet chest, biological moving bed and equalizing tank are arranged in heat preservation greenhouse; Aeration head in biological moving bed is connected with pneumatic pump by pipeline, and mouth at the bottom of the biological moving bed below aeration head connects shore pipe.
In said apparatus, heat preservation greenhouse adopts aluminium alloy glass heat preservation greenhouse or adopts polyvinyl chloride Anti-fogging Film heat preservation greenhouse; Solar water heater is provided with in heat preservation greenhouse.
In said apparatus, subsurface wastewater infiltration system adopts gravel water distribution and water outlet, is turfy soil above and below water distribution gravel bed, the turfy soil top plantation Japanese lawn grass above water distribution gravel bed; Being followed successively by slag layer, iron tailings layer bottom turfy soil below water distribution gravel bed, zeolite layer and mixed-matrix, is water outlet gravel bed bottom mixed-matrix; Wherein mixed-matrix be turfy soil, slag, iron tailings and zeolite by volume 20:1:1:1 mix; The particle diameter of slag, iron tailings and zeolite is respectively at 0 ~ 1mm, 1 ~ 2mm and 1 ~ 2mm.
In said apparatus, the height ratio of water distribution gravel bed, upper strata turfy soil, lower floor's turfy soil, slag layer, iron tailings layer, zeolite layer, mixed-matrix and water outlet gravel bed is 1:(0.3 ~ 0.5): (2 ~ 4): (0.1 ~ 0.3): (0.1 ~ 0.3): (0.1 ~ 0.3): (4 ~ 6): 1.
Northern country sanitary sewage compounding method of the present invention adopts said system, carries out according to the following steps:
1, in biological moving bed, vinyon filler, active sludge and northern country sanitary sewage is inserted as biofilm raw material, the filling proportion of vinyon filler is 30 ~ 45% by volume, the activated sludge concentration added in northern country sanitary sewage is 4000 ~ 6000mg/L, adopt spoil disposal biofilm method to turn out the microorganism be attached on filler, after completing biofilm, discharge active sludge;
2, northern country sanitary sewage has been passed in the biological moving bed of biofilm, then by air pump to the aeration head blowing air in biological moving bed, northern country sanitary sewage, after the process of biological moving bed, stops passing into air, and the upper strata process water of generation is passed in equalizing tank; Wherein northern country sanitary sewage intake every day is 25 ~ 50 times that pass into biofilm raw material volume, divides and passes into for 4 ~ 8 times; Air intake is that every cubic metre of northern country sanitary sewage passes into 800 ~ 900ml/min;
3, the upper strata clear water that equalizing tank top is formed is passed in the subsurface wastewater infiltration system of filling-modified matrix; Intake is by being equally divided into 8 ~ 10 every day.
In aforesaid method, when temperature is lower than 15 DEG C, control the sewage temperature of biological moving bed and equalizing tank at 15 ~ 20 DEG C by being provided with solar water heater in heat preservation greenhouse.
The ammonia-nitrogen content of above-mentioned northern country sanitary sewage is 30 ~ 50mg/L, and total nitrogen content is 30 ~ 50mg/L, and phosphorus content is 5 ~ 13mg/L, COD content is 350 ~ 450mg/L.
In aforesaid method, the lower floor's mud formed in biological moving bed is discharged by the shore pipe bottom biological moving bed.
Above-mentioned vinyon filler is short-tube type filler.
In aforesaid method, the ammonia-nitrogen content of equalizing tank clear water is at the middle and upper levels 4 ~ 17mg/L, and total nitrogen content is 10 ~ 24mg/L, and phosphorus content is 1 ~ 5mg/L, COD content is 20 ~ 80mg/L.
In aforesaid method, the ammonia-nitrogen content of subsurface wastewater infiltration system water outlet water outlet is 0, and total nitrogen content is 8 ~ 14mg/L, and phosphorus content is 0, COD content is 35 ~ 50mg/L.
The biological moving bed technique that technology of the present invention adopts also claims MBBR (Moving Bed Biofilm Reactor, be called for short MBBR), (Alma Ma ic ' is invented by AnoxKaldes company of Norway, Jessica Bengtsson, Magnus Christensson. Measuring and modeling the oxygen profile in a nitrifying Moving Bed Biofilm Reactor [J]. Mathematical Biosciences, 2010 (227): 1 – 11), it is Novel waste (dirt) the water biochemical processing starting in the world at present to rise, belong to the category of biomembrance process, since first set biological moving bed process unit in 1989 builds up, build up city in multiple country and to have had stable political situation Industry Waste (dirt) water processing establishment, achieved good effect.Underground sewage percolating system (the Subsurface Wastewater Infiltration System that the present invention adopts, SWIS) be based on ecological principle, integrated anaerobism, aerobic treatment process and a kind of ecological method treatment technology (Zhang Keqiang formed, Li Junxing, Zhang Hongsheng, Deng. technology for treating domestic sewage in rural area and engineering mode inquire into [C] // National Agricultural pollution of area source and integrated control scientific seminar collection of thesis, 2004:223 – 225).
Advantage of the present invention and effect are:
1, the less excess sludge production of biological moving bed, filler can not block, without the need to sludge reflux and back flushing, simple to operate, and overall floor space is little, is convenient to routine maintenance and management;
2, subsurface wastewater infiltration system is main filler with turfy soil and gravel, and management is simple, less investment, reactive system are positioned at underground and do not destroy view, and top vegetation is beneficial to greening, is destitute of smell;
3, high to the clearance of pollutent, the water outlet pollutant load after process is low, has larger processing efficiency and higher position reason load;
4, the phenomenon that effectively have been directed to northern Cold Winter is incubated, the operation that the recombining process being used in northern country sanitary sewage disposal can be good in the winter time;
5, the problem preventing subsurface wastewater infiltration system to block, enables the subsurface wastewater infiltration system longer time run more efficiently, ensures the larger removal efficiency of overall recombining process, the cost simultaneously also saved.
Accompanying drawing explanation
Fig. 1 is northern country sanitary sewage multiple treating system structural representation of the present invention, in figure, 1, inlet chest, 2, intake pump, 3, liquid meter, 4, aeration head, 5, sludge settling district, 6, biological moving bed water outlet, 7, gas meter, 8, pneumatic pump, 9, equalizing tank, 10, equalizing tank water outlet, 11, shore pipe, 12, subsurface wastewater infiltration system water-in, 13, subsurface wastewater infiltration system water outlet, 14, Japanese lawn grass, 15, upper strata turfy soil, 16, water distribution gravel bed, 17, slag layer, 18, iron tailings layer, 19, zeolite layer, 20, mixed-matrix, 21, heat preservation greenhouse, 22, solar panels, 23, thermal insulation layer, 24, thermostat water bath, 25, water outlet gravel bed, 26, lower floor's turfy soil.
Embodiment
The biological moving bed reactor adopted in the embodiment of the present invention is high 450mm, internal layer external diameter 150mm, internal diameter 140mm, outer external diameter 200mm, internal diameter 190mm.Reactor is synthetic glass material, and useful volume is 5L, liquid level height 325mm during arrival useful volume.
The vinyon filler selected in the embodiment of the present invention is short-tube type filler, and diameter is 10mm, and thickness is 0.7mm, and length is 10mm, and porosity is 84%, and density is 0.96 ~ 0.99%, and inner ratio surface area and total specific surface area are respectively 614 m
2/ m
3with 1100 m
2/ m
3.
In the embodiment of the present invention, heat preservation greenhouse adopts aluminium alloy glass heat preservation greenhouse or adopts polyvinyl chloride Anti-fogging Film heat preservation greenhouse.
In the embodiment of the present invention, heat preservation greenhouse is outside equipped with solar panels, solar panels day electrogenesis 2 degree, store battery storage battery is set in heat preservation greenhouse, one end is connected with solar panels and receives luminous energy, the other end is connected with electric socket, the plug exported by electric socket is connected (winter) with intake pump (summer) or thermostat water bath, by the thermal insulation layer of 25 degree of hot water input biological moving beds.
Adopt pump water inlet gravity water-out manners in the embodiment of the present invention, automatic turn on pump water inlet, time controller connected electromagnetic valve controls water discharging time and aquifer yield.
Control water inlet organic loading in the embodiment of the present invention, alternation of wetting and drying run and the improvement etc. of system because of usually prevention subsurface wastewater infiltration system anti-clogging plug; Organic loading of wherein intaking controls at below 100mg/L; Between the starting period, psychrometric ratio is 3:1, and between stationary phase, psychrometric ratio is 1:1, controls water inlet number of times.
Iron tailings in the embodiment of the present invention originates in Hebei cypress pump, is selected by magnetic separation, and grade is 6, experimental verification to microorganism without radiation function; Chemical element and the percentage composition of raw ore are as follows: 12.51%TFe, 7.29wt%FeO, 40.23 wt %SiO
2, 11.98 wt %Al
2o
3, 8.88 wt %CaO, 5.43 wt %MgO, 2.29 wt %TiO
2, 1.25 wt %P, 0.5% wt S.
Active sludge in the embodiment of the present invention is that sewage work adopts the mud formed in aerobe art production process, outwells supernatant liquor after precipitation, and residue base sludge is as active sludge.
Embodiment 1
Northern country sanitary sewage multiple treating system structure as shown in Figure 1, comprises inlet chest 1, biological moving bed, equalizing tank 9 and subsurface wastewater infiltration system; Inlet chest 1 is communicated with the water-in of biological moving bed by intake pump 2, and the water outlet 6 of biological moving bed connects a rising pipe, and rising pipe inserts bottom equalizing tank 9, and equalizing tank water outlet 10 is communicated with the water-in 12 of subsurface wastewater infiltration system; Inlet chest 1, biological moving bed and equalizing tank 9 is arranged in heat preservation greenhouse 21; Aeration head 4 in biological moving bed is connected with pneumatic pump 8 by pipeline, and mouth at the bottom of the biological moving bed below aeration head 4 connects shore pipe 11;
Heat preservation greenhouse upper strata covers double-deck straw mat and front arranges the straw screen or mat that keeps out the wind; Solar water heater is provided with in heat preservation greenhouse;
As sludge settling district 5 below the aeration head 4 of biological moving bed, the pipeline that aeration head 4 is connected with pneumatic pump 8 is provided with gas meter 7;
The outer wall of biological moving bed bed body is provided with thermal insulation layer 23; The water-in of thermal insulation layer 23 is communicated with water-in with the water outlet of thermostat water bath 24 respectively with water outlet, and heating unit and the solar panels 22 of thermostat water bath 24 are assembled together, and thermostat water bath 24 and solar panels 22 form solar water heater;
Subsurface wastewater infiltration system adopts gravel water distribution and water outlet, is turfy soil above and below water distribution gravel bed 16, the upper strata turfy soil 15 top plantation Japanese lawn grass 14 above water distribution gravel bed 16; Being followed successively by slag layer 17, iron tailings layer 18 bottom lower floor's turfy soil 26 below water distribution gravel bed 16, zeolite layer 19 and mixed-matrix 20, is water outlet gravel bed 25 bottom mixed-matrix 20; Wherein mixed-matrix be turfy soil, slag, iron tailings and zeolite by volume 20:1:1:1 mix and form; The particle diameter of slag, iron tailings and zeolite is respectively at 0 ~ 1mm, 1 ~ 2mm and 1 ~ 2mm;
The height ratio of water distribution gravel bed, upper strata turfy soil, lower floor's turfy soil, slag layer, iron tailings layer, zeolite layer, mixed-matrix and water outlet gravel bed is 1:0.4:3:0.2:0.2:0.2: 5:1;
Northern country sanitary sewage compounding method adopts said apparatus, carries out according to the following steps:
Vinyon filler, active sludge and northern country sanitary sewage is inserted as biofilm raw material in biological moving bed, the filling proportion of vinyon filler is 40% by volume, the concentration in northern country sanitary sewage of active sludge is 5000mg/L, adopt spoil disposal biofilm method to turn out the microorganism be attached on filler, complete biofilm;
Northern country sanitary sewage has been passed in the biological moving bed of biofilm, by air pump to the aeration head blowing air in biological moving bed, source, face sewage, after the process of biological moving bed, stops passing into air, and the upper strata process water of generation is passed in settling tank; Wherein northern country sanitary sewage intake every day is 50 times that pass into biofilm raw material volume, divides and passes into for 8 times; Air intake is that every cubic metre of northern country sanitary sewage passes into 900ml/min;
The upper strata clear water that equalizing tank top is formed is passed in the subsurface wastewater infiltration system of filling-modified matrix; Intake is by being equally divided into 8 every day;
When temperature is lower than 15 DEG C, control the temperature of biological moving bed and equalizing tank at 15 ~ 20 DEG C by being provided with solar water heater in heat preservation greenhouse;
The lower floor's mud formed in biological moving bed is discharged by the shore pipe bottom biological moving bed;
The ammonia-nitrogen content of northern country sanitary sewage is 30 ~ 50mg/L, and phosphorus content is 5 ~ 13mg/L, COD content is 350 ~ 450mg/L, and suspension content is few;
The ammonia-nitrogen content of upper strata clear water is 4 ~ 17mg/L, and total nitrogen content is 10 ~ 24mg/L, and phosphorus content is 1 ~ 5mg/L, COD content is 20 ~ 80mg/L;
In subsurface wastewater infiltration system water outlet, the ammonia-nitrogen content of water is 0, and total nitrogen content is 8 ~ 14mg/L, and phosphorus content is 0, COD content is 35 ~ 50mg/L;
Run 30 days ammonia nitrogen removal franks more than 95%, the clearance of TN at the clearance of 30 ~ 68%, COD more than 92%.
Embodiment 2
Northern country sanitary sewage multiple treating system structure is with embodiment 1; Difference is: the height ratio of water distribution gravel bed, upper strata turfy soil, lower floor's turfy soil, slag layer, iron tailings layer, zeolite layer, mixed-matrix and water outlet gravel bed is 1:0.3:2:0.1:0.1:0.1:4:1;
Northern country sanitary sewage compounding method is with embodiment 1; Difference is: the filling proportion of vinyon filler is 30% by volume, the concentration in northern country sanitary sewage of active sludge is 4000mg/L, wherein northern country sanitary sewage intake every day is 40 times that pass into biofilm raw material volume, divides and passes into for 6 times; Air intake is that every cubic metre of northern country sanitary sewage passes into 850ml/min;
The upper strata clear water that equalizing tank top is formed is passed in the subsurface wastewater infiltration system of filling-modified matrix; Intake is by being equally divided into 9 every day;
Run 60 days ammonia nitrogens and total phosphorus is removed completely, the clearance of TN at the clearance of 40 ~ 72%, COD more than 95%.
Embodiment 3
Northern country sanitary sewage multiple treating system structure is with embodiment 1; Difference is: the height ratio of water distribution gravel bed, upper strata turfy soil, lower floor's turfy soil, slag layer, iron tailings layer, zeolite layer, mixed-matrix and water outlet gravel bed is 1:0.5:4:0.3:0.3:0.3:6:1;
Northern country sanitary sewage compounding method is with embodiment 1; Difference is: the filling proportion of vinyon filler is 45% by volume, the concentration in northern country sanitary sewage of active sludge is 6000mg/L, wherein northern country sanitary sewage intake every day is 25 times that pass into biofilm raw material volume, divides and passes into for 4 times; Air intake is that every cubic metre of northern country sanitary sewage passes into 800ml/min;
The upper strata clear water that equalizing tank top is formed is passed in the subsurface wastewater infiltration system of filling-modified matrix; Intake is by being equally divided into 10 every day;
Run 90 days ammonia nitrogens and total phosphorus is removed completely, the clearance of TN at the clearance of 42 ~ 73%, COD more than 97%.
Claims (9)
1. a northern country sanitary sewage multiple treating system, is characterized in that this system comprises inlet chest, biological moving bed, equalizing tank and subsurface wastewater infiltration system; Inlet chest is communicated with the water-in of biological moving bed by intake pump, and the water outlet of biological moving bed connects a rising pipe, and rising pipe inserts bottom equalizing tank, and the water outlet of equalizing tank is communicated with the water-in of subsurface wastewater infiltration system; Inlet chest, biological moving bed and equalizing tank are arranged in heat preservation greenhouse; Aeration head in biological moving bed is connected with pneumatic pump by pipeline, and mouth at the bottom of the biological moving bed below aeration head connects shore pipe.
2. a kind of northern country sanitary sewage multiple treating system according to claim 1, is characterized in that described heat preservation greenhouse adopts aluminium alloy glass heat preservation greenhouse or adopts polyvinyl chloride Anti-fogging Film heat preservation greenhouse; Solar water heater is provided with in heat preservation greenhouse.
3. a kind of northern country sanitary sewage multiple treating system according to claim 1, it is characterized in that described subsurface wastewater infiltration system adopts gravel water distribution and water outlet, turfy soil is, the turfy soil top plantation Japanese lawn grass above water distribution gravel bed above and below water distribution gravel bed; Being followed successively by slag layer, iron tailings layer bottom turfy soil below water distribution gravel bed, zeolite layer and mixed-matrix, is water outlet gravel bed bottom mixed-matrix; Wherein mixed-matrix be turfy soil, slag, iron tailings and zeolite by volume 20:1:1:1 mix; The particle diameter of slag, iron tailings and zeolite is respectively at 0 ~ 1mm, 1 ~ 2mm and 1 ~ 2mm.
4. a kind of northern country sanitary sewage multiple treating system according to claim 3, is characterized in that the height ratio of the water distribution gravel bed of described subsurface wastewater infiltration system, upper strata turfy soil, lower floor's turfy soil, slag layer, iron tailings layer, zeolite layer, mixed-matrix and water outlet gravel bed is 1:(0.3 ~ 0.5): (2 ~ 4): (0.1 ~ 0.3): (0.1 ~ 0.3): (0.1 ~ 0.3): (4 ~ 6): 1.
5. a northern country sanitary sewage compounding method, is characterized in that adopting system according to claim 1, carries out according to the following steps:
(1) in biological moving bed, vinyon filler, active sludge and northern country sanitary sewage is inserted as biofilm raw material, the filling proportion of vinyon filler is 30 ~ 45% by volume, the concentration in northern country sanitary sewage of active sludge is 4000 ~ 6000mg/L, spoil disposal biofilm method is adopted to turn out the microorganism be attached on filler, discharge active sludge, complete biofilm;
(2) northern country sanitary sewage has been passed in the biological moving bed of biofilm, by air pump to the aeration head blowing air in biological moving bed, source, face sewage, after the process of biological moving bed, stops passing into air, and the upper strata process water of generation is passed in settling tank; Wherein northern country sanitary sewage intake every day is 25 ~ 50 times that pass into biofilm raw material volume, divides and passes into for 4 ~ 8 times; Air intake is that every cubic metre of northern country sanitary sewage passes into 800 ~ 900ml/min;
(3) the upper strata clear water that settling tank top is formed is passed in the subsurface wastewater infiltration system of filling-modified matrix; Intake is by being equally divided into 8 ~ 10 every day.
6. a kind of northern country sanitary sewage compounding method according to claim 5, is characterized in that when temperature is lower than 15 DEG C, controls the temperature of biological moving bed and equalizing tank at 15 ~ 20 DEG C by being provided with solar water heater in heat preservation greenhouse.
7. a kind of northern country sanitary sewage compounding method according to claim 5, is characterized in that the ammonia-nitrogen content of described northern country sanitary sewage is 30 ~ 50mg/L, and phosphorus content is 5 ~ 13mg/L, COD content is 350 ~ 450mg/L.
8. a kind of northern country sanitary sewage compounding method according to claim 5, it is characterized in that the ammonia-nitrogen content of described upper strata clear water is 4 ~ 17mg/L, total nitrogen content is 10 ~ 24mg/L, and phosphorus content is 1 ~ 5mg/L, COD content is 20 ~ 80mg/L.
9. a kind of northern country sanitary sewage compounding method according to claim 5, it is characterized in that the ammonia-nitrogen content of water in subsurface wastewater infiltration system water outlet is 0, total nitrogen content is 8 ~ 14mg/L, and phosphorus content is 0, COD content is 35 ~ 50mg/L.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113213618A (en) * | 2021-03-09 | 2021-08-06 | 中国环境科学研究院 | Tail end treatment system and method for purifying urban non-point source organic pollution |
| CN113461259A (en) * | 2021-07-01 | 2021-10-01 | 珠江水利委员会珠江水利科学研究院 | Treatment system for rural decentralized domestic garbage and sewage |
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| CN115353191A (en) * | 2022-08-23 | 2022-11-18 | 北京工业大学 | Method for treating high-C/N wastewater to realize efficient denitrification by using aerobic biofilm reactor |
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| CN106630170A (en) * | 2017-01-23 | 2017-05-10 | 东北大学 | Sewage underground percolation system for treating low-carbon-to-ammonium-ratio domestic sewage |
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| CN113772805B (en) * | 2021-09-17 | 2023-04-25 | 海口永祺环保设备技术有限公司 | Biological film hanging device for rural sewage treatment tank |
| CN115353191A (en) * | 2022-08-23 | 2022-11-18 | 北京工业大学 | Method for treating high-C/N wastewater to realize efficient denitrification by using aerobic biofilm reactor |
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