CN103145295A - Enhanced ecological treatment system for cephalosporin-containing sewage - Google Patents
Enhanced ecological treatment system for cephalosporin-containing sewage Download PDFInfo
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Abstract
The invention belongs to the technical field of sewage treatment, and particularly provides an enhanced ecological treatment system for cephalosporin-containing sewage. The enhanced ecological treatment system mainly comprises two parts, namely, a vertical flow ecologic filter tank and a subsurface constructed wetland, wherein the vertical flow ecologic filter tank is provided with a three-stage step shaped structure; treatment units at all levels are the cavity bodies opened in the top ends; the water distribution pipe networks are paved at the top layers, fillers are paved in the middle layers, and water collecting pipe networks are paved at the low layers; the subsurface constructed wetland is provided with a vertical baffle structure; and the sewage is pumped to a primary treatment unit, then stepwise flows through a secondary treatment unit and a tertiary treatment unit, and finally flows into the subsurface constructed wetland through a draining pipe at the bottom part of the tertiary treatment unit. The conventional indexes of the treated and drained water can meet the one-class A standard of the Standard for Discharge of Pollutants from Sewage Treatment Works in Towns and Cities (GB18918-2002), and no cephalosporin is detected.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of reinforcement formula ecological treatment system be used to containing cynnematin sewage.
Background technology
The microbiotic that cynnematin is a class has a broad antifungal spectrum, anti-microbial activity is strong, curative effect is high, for defeating various bacteriums to infect, the mankind make great contribution, the scope that has broken through bacterial-infection resisting that its improved compound has as chemotherapeutics, effect with proteinase inhibitor can be used for degeneration, treatment cancer, osteoporosis, rheumatoid arthritis, alzheimer's disease, cataract etc.This symptom of a trend is probably brought new more wide application prospect for cynnematin.It is reported, the sales volume of whole world cynnematin accounts for more than 40% of anti-infectives sales volume; And in China, the ratio that the usage quantity of hospital's the inside spore rhzomorph accounts for all antimicrobial drugs surpasses 45%.In addition, cynnematin also is widely used in agricultural production process in the control and livestock and poultry cultivation to diseases and pests of agronomic crop.Can say, cynnematin has become in the world today that research is the most active, the rapidest, the most widely used antibiotics of progress, is the very important clinical anti-infectives of generally acknowledging, is also the main source of new antibiotic from now on.Due to a large amount of productions and the use of cynnematin, it is detected in rivers, lake and body of groundwater.
China is a large agricultural country, and the rural population accounts for 48.73% of total population, and main livestock and poultry cultivation concentrates on the Rural areas.Along with the improving and the development of agricultural, livestock and poultry breeding industry gradually of the vast Rural Medical Security System of China in recent years, the antibiotic usage quantity in Rural areas presents the trend of increase year after year, causes that in the ambient water environment, microbiotic pollutes aggravation.In addition, the rural areas in our country economic condition is relatively backward, lacks the pipe network gathering system on basis and suitable sewage treatmentmethod, and the sewage disposal level is lower, therefore for the city, microbiotic is larger to the threat of Rural areas.In water surrounding, the antibiotic remains problem proposes new challenge to current water environment protection, in the urgent need to strengthening the research to main antibiotic remains Pollution control technology in water surrounding, to ensure human health and ecological safety.The advantages such as, environmental friendliness low based on less investment, energy consumption, convenient management, decentralized small-scale ecological wastewater processing technique has obtained certain application in the Rural areas, the ecological treatment system of developing on this basis the reinforcement formula not only can be removed the conventional pollutent in sewage, the microbiotic that exists in sewage is also had good degraded pollute processing horizontal for promoting China's rural area microbiotic, improve the Rural Water Environment quality and all have very significance.
Summary of the invention
The object of the invention is to propose that a kind of less investment, energy consumption for containing cynnematin sewage is low, the reinforcement formula ecological treatment system of environmental friendliness, convenient management.
The object of the invention is to propose a kind of reinforcement formula ecological treatment system for containing cynnematin sewage, formed by vertical current ecological filter and underflow type artificial wet land two portions, wherein,
Described vertical current ecological filter is three grades of step structures, and the first step, the second stage, third stage processing unit are the cavity body of top end opening, be connected successively, and the height of locus successively decreases step by step; The bottom of second stage processing unit is lower than the bottom of first step processing unit, and third stage processing unit is lower than the bottom of second stage processing unit;
Described formula artificial swamp adopts the vertical baffling structure, namely by a plurality of dividing plates, current wetland is divided into some lattice, the upper edge of adjacent separator and lower edge alternately are provided with water hole, sewage flows through in water hole, make sewage become the up and down baffling in whole current wetland, be convenient to give full play to the work of whole wet land filler in order to improve treatment effect.
In the present invention, in described vertical current ecological filter, in the first step, the second stage, third stage processing unit, top layer is equipped with the water distribution pipe network, and filler is laid in the middle level, and low layer is laid collector pipe network; In third stage processing unit, collector pipe network is connected with a water shoot, and this water shoot mouth of pipe is higher than the collector pipe network of third stage processing unit, to extend the residence time of sewage in processing unit; At first sewage arrived first step processing unit by extracting, and the second stage processing unit of flowing through successively, third stage processing unit form the flow pattern of falling streaming, and the water shoot by bottom, tertiary treatment district enters underflow type artificial wet land at last.
In the present invention, in described vertical current ecological filter, between first step processing unit and second stage processing unit, difference of altitude is 20 ~ 30cm, and between second stage processing unit and third stage processing unit, difference of altitude is 30 ~ 50cm.
In the present invention, in described vertical current ecological filter, the filler that lay in the each processing unit middle level is followed successively by from bottom to top: filler is the pebbles of particle diameter 1 ~ 2cm, and thickness is 8 ~ 12cm; Filler is rubble, and thickness is 12 ~ 16cm; Filler is the particle diameter fine sand, and thickness is 25 ~ 32cm; Earthworm bed of packings thickness is 40 ~ 48cm, puts into earthworm when device normally moves.Top layer is the free water tagma, and this region height is 4 ~ 7cm.
In the present invention, described underflow type artificial wet land, its longitudinal degree are 60 ~ 70cm; Wherein, lower floor's filler is that thickness is green stone of 40 ~ 50cm, and blue or green cobble-stone diameter is 1 ~ 3cm, as treatment zone; The upper strata is pedosphere, as the plantation layer of plant, can be used for simultaneously removing the part pollutent; In current wetland, selected plant is reed, hay grass, calamus.
In the present invention, described underflow type artificial wet land, its water-out manners has two kinds: (1) is establishing perforated pipe near at the bottom of the pond of wetland end, the middle portion of perforated pipe is installed threeway, connecting water shoot by threeway wears pool wall at the bottom of the pond and goes out, the 90 degree elbows that make progress at the other end installation outlet of water shoot, on connect vertical telescopic tube, regulate the depth of water in wetland by this expansion pipe; (2) fix a drainpipe and mounting ball valve at the different heights place of pool wall, by the depth of water in the open to shut to regulate current wetland of different heights ball valve.
The present invention propose for the reinforcement formula ecological treatment system that contains cynnematin sewage, the step of its treatment scheme is as follows:
Step 1: the sewage that contains cynnematin is collected through pipe network, is introduced into the stable also regulating pondage of hydrolysis acidification pool;
Step 2: the hydrolysis acidification pool water outlet is drawn up the first step vertical filter tank with peristaltic pump, by the intensified water-layout measure, make water distribution even, sewage enters the second stage, third stage filter tank through first step filter tank, vertical filter tank water outlet most COD, TN, TP are removed, and cynnematin major part in this process is removed;
Step 3: the tail water of step 2 and the rainfall runoff through collecting enter artificial wet land system and carry out advanced treatment, and water outlet detects without the cephalo rhzomorph, can be used as middle water reuse, and artificial swamp can also be built good water surrounding view in addition.
In the present invention, the configuration of the different packing layers of vertical current ecological filter mainly contains following effect: (1) is assigned to sewage in treatment system uniformly; (2) with the tank level control of water inlet in the bottom of this layer, can reduce the impact that the stink because of raw waste water causes to surrounding environment, can reduce growing of mosquitos and flies in summer simultaneously; (3) but earthworm wriggles, looks for food, microbic activity in the activity reinforcement fillers such as discharge of earthworm excrement, promote the removal of conventional pollutent (nitrogen, phosphorus, COD etc.); Under the synergy of plant-earthworm-microorganism, in sewage, cynnematin is effectively degraded simultaneously.The selected plant of compound vertical ecological filter is emergent, can be reed, hay grass, iris, Canna generalis Bailey and calamus etc.In the filler of upper strata, filter tank, the emergent pollutents such as nitrogen, phosphorus and COD in water body that can absorb water on the one hand on the other hand, can provide oxygen to wet land system, thereby guarantee the Degradation and Transformation of pollutent with emergent plantation.
In the present invention, described vertical current ecological filter has three independently processing units, separate step by step, each unit is comprised of pebbles treatment zone 12, rubble treatment zone 11, fine sand treatment zone 10 and earthworm bed of packings treatment zone 9 successively and plants emergent 13; The place is provided with water shoot 18 at the setting liquid level, and the water outlet of water shoot should be higher than the surface of adjacent vertical baffling underflow type artificial wet land 6.Metalling 11 and earthworm packing layer 9 at each pond body unit arrange ventpipe 7, and with required oxygen in time additional sewage treatment process, but the stink in the while draining-off sewage reduces mosquitos and flies and grows; In the middle part of the body of pond, cowling panel 8 is set, is beneficial to sewage and is able to Uniform Flow in treatment system; Evacuated tube 16 is set in the bottom, convenient when safeguarding, with this pond emptying.The pond body adopts brick mix structure to build.
In the present invention, underflow type artificial wet land adopts the vertical baffling structure, namely by a plurality of dividing plates, current wetland is divided into some lattice, the upper edge of adjacent separator and lower edge alternately are provided with water hole, sewage is from by flowing through the hole, make sewage conduct up and down baffling in whole current wetland, be convenient to give full play to the work of whole wet land filler in order to improve treatment effect.The longitudinal degree of current wetland is 60 ~ 70cm, and it is pedosphere at the middle and upper levels, as the plantation layer of plant, can remove the part pollutent simultaneously; Lower floor is treatment zone, and filler is selected green stone, and particle diameter is 1 ~ 3cm.Plant selected in current wetland can be reed, hay grass, calamus.In whole wetland bottom, establish perforated pipe along the pond length direction by pool wall, perforated pipe passes all dividing plates and end pool wall outside the pond, controls switching with ball valve, opens ball valve when safeguarding, and emptying wetland is closed ball valve when normally moving.Current wetland can be ground type, semi-underground type and underground type, adopts brick mix structure, ground to have the gradient of 2% ~ 3% tendency water side.The feed-water end of current wetland should than the vertical current ecological filter low 20cm at least in water side, guarantee that the water outlet of vertical current ecological filter can enter in current wetland smoothly.
Plant in described vertical baffling underflow type artificial wet land and be implanted with emergent 13, be provided with some dividing plates 14 that directly are connected with Chi Ding or pond dolly respectively, dividing plate is separated into descending and up vertical subsurface flow district with the sub-treatment zone of green stone.The bottom is equipped with corresponding bearing 15 and evacuated tube 16.In near the descending vertical subsurface flow district of drain pipe port 19 or up vertical subsurface flow district, perforation header 17 is installed, this perforation header is connected with water shoot 18.
In vertical current ecological filter and underflow type artificial wet land unit, the removal approach of principal pollutant is as follows:
(1) removal of COD.In whole wetland unit COD mainly by ecological treatment system in heterotrophic microorganism as carbon source and energy utilization, simultaneously part COD can directly be absorbed by plant.
(2) removal of nitrogen.In the packing area of vertical current ecological filter, near plant root system part, organonitrogen and ammonia nitrogen and nitrite nitrogen can be oxidized to nitric nitrogen, and nitric nitrogen is reduced into the nitrogen removal at anoxic and the anaerobic zone away from root system; Can pass through nitration denitrification denitrogenation in whole current wetland; A part of ammonia nitrogen and nitre nitrogen can directly be utilized by plant and microorganism simultaneously.
(3) removal of phosphorus.The removal approach of phosphorus mainly contains the picked-up of filling adsorption, plant and microbial assimilation etc., and phosphorus is finally removed from treatment system and depended on the harvesting of emergent in vertical current ecological filter and current wetland and the replacing of saturated filler.
(4) removal of cynnematin.The removal of cynnematin is mainly to utilize microorganism system effect complicated in environment to realize being achieved.Under the microbial enzyme effect, the cynnematin structure is changed, thereby cause that its chemistry and physical properties change, and namely by cynnematin is degraded to micromolecular compound from macromolecular cpd, become H at last
2O and CO
2, realize containing the harmless treatment of cynnematin sanitary sewage.
The water outlet conventional index of processing through native system can reach " urban wastewater treatment firm pollutant emission standard " (GB18918 ~ 2002) one-level A standard, and cynnematin is without detecting.The present invention has the following advantages:
1, set up a plurality of vertical current ecological filter processing units, free water tagma, the upper strata of single processing unit plantation emergent, can effectively improve regional dissolved oxygen content on the one hand, removing for the conversion of nitrogen provides favourable condition; The cast-off cells of the secretory product of root system of plant and root system on the other hand are for rhizospheric microorganism provides nutritive substance, for the removal of cynnematin in sewage provides condition.
2, ecological filter and the underflow type artificial wet land of transformation, added respectively cowling panel and dividing plate, increased the tortuosity of current, and sewage is fully contacted with filler, improved the adsorptive power of pond body filler to phosphorus.
3, by vertical current ecological filter and underflow type artificial wet land are united use, not only can make conventional pollutent in sewage (nitrogen, phosphorus, COD etc.) obtain higher clearance, and the multi-stage ecological processing unit makes effluent quality better along the effective cynnematin in degradation of sewage of the microorganism of journey.
Description of drawings
Fig. 1 is the reinforcement formula ecological treatment system schematic diagram that contains cynnematin sewage of the present invention.
Fig. 2 is composite vertical current ecological filter processing unit structural representation of the present invention.
Fig. 3 is vertical baffling underflow type artificial wet land processing unit structural representation of the present invention.
Number in the figure: 1 is hydrolysis acidification pool, and 2 is peristaltic pump, and 3 is water service pipe, and 4 are perforation cloth tank, 5 is the vertical current ecological filter, and 6 is the vertical baffling underflow type artificial wet land, and 7 is ventpipe, 8 is cowling panel, and 9 is the earthworm bed of packings, and 10 is the fine sand filler, 11 is the rubble filler, and 12 is the pebbles filler, and 13 is plant, 14 is dividing plate, and 15 is bearing, and 16 is evacuated tube, 17 are the perforation header, and 18 is water shoot, and 19 is drain pipe port.
Embodiment
The present invention is further illustrated for following structure drawings and Examples.
A kind of reinforcement formula ecological treatment system for containing cynnematin sewage, its treatment scheme is:
At first, will utilize the peristaltic pump extracting in first step vertical current ecological filter through the pretreated cynnematin sewage that contains, sewage be at first from the first step processing unit unit, the second stage of flowing through, and then the water distributor by pond, second stage body bottom enters third stage unit.In processing units at different levels, sewage is flowed through from top to bottom successively: earthworm packing layer, fine sand layer, metalling, pebbles layer; The sewage of processing through the vertical current ecological filter enters current wetland by the water shoot of body bottom, third stage pond;
Secondly, to enter in the vertical baffling underflow type artificial wet land through water shoot through the water outlet after processing in the vertical current ecological filter, sanitary sewage is further processed, then collected by vertical baffling underflow type artificial wet land perforation header, and discharged by water shoot.
The sewage water advanced treatment apparatus of the present embodiment, the vertical current ecological filter is compound vertical ecological filter, have three independently processing units, stepped structure, sewage is at first from the first step processing unit unit, the second stage of flowing through, and then the water distributor by pond, second stage body bottom enters third stage unit.First step processing unit and second stage processing unit, between the processing unit third stage processing unit of the second stage, difference of altitude is respectively 20 ~ 30cm, 30 ~ 50cm.Compound vertical ecological filter each processing unit is divided into four layers, is followed successively by from bottom to top: thickness is 10cm, and filler is the pebbles of particle diameter 1 ~ 2cm; Thickness is 15cm, and filler is rubble; Thickness is 30cm, and filler is that particle diameter is fine sand; Thickness is 45cm, is the earthworm bed of packings; Top layer is the free water tagma, and this region height is 5cm.In the filler of upper strata, filter tank, the emergent pollutents such as nitrogen, phosphorus and COD in water body that can absorb water on the one hand on the other hand, can provide oxygen to wet land system, thereby guarantee the Degradation and Transformation of pollutent with emergent plantation.The sewage of processing through the vertical current ecological filter enters current wetland by the water shoot of body bottom, third stage pond.The vertical current ecological filter is ground type, at metalling and the earthworm packing layer of each pond body unit, ventpipe is set, and in time replenishing required oxygen in sewage treatment process, but the stink in draining-off sewage simultaneously reduces mosquitos and flies and grows; In the middle part of the body of pond, cowling panel is set, is beneficial to sewage and is able to Uniform Flow in treatment system; In the bottom, evacuated tube is set, convenient when safeguarding, with this pond emptying.The configuration of the different packing layers of vertical current ecological filter mainly contains following effect: 1) be assigned to uniformly sewage in treatment system; 2) with the tank level control of water inlet in the bottom of this layer, can reduce the impact that the stink because of raw waste water causes to surrounding environment, can reduce growing of mosquitos and flies in summer simultaneously; 3) but earthworm wriggles, looks for food, microbic activity in the activity reinforcement fillers such as discharge of earthworm excrement, promote the removal of conventional pollutent (nitrogen, phosphorus, COD etc.); Under the synergy of plant-earthworm-microorganism, in sewage, cynnematin is effectively degraded simultaneously.
Underflow type artificial wet land adopts the vertical baffling structure, namely by a plurality of dividing plates, current wetland is divided into some lattice, the upper edge of adjacent separator and lower edge alternately are provided with water hole, sewage flows through in by the hole, can make like this sewage conduct up and down baffling in whole current wetland, be convenient to give full play to the work of whole wet land filler in order to improve treatment effect.The longitudinal degree of current wetland is 60 ~ 70cm, and it is pedosphere at the middle and upper levels, as the plantation layer of plant, can remove the part pollutent simultaneously; 40 ~ the 50cm of lower floor is treatment zone, and filler is selected green stone, and particle diameter is 1 ~ 3cm.Plant selected in current wetland can be reed, hay grass, calamus.The water-out manners of current wetland has two kinds: 1) establishing perforated pipe near at the bottom of the pond of wetland end, the middle portion of perforated pipe is installed threeway, connecting water shoot by threeway wears pool wall at the bottom of the pond and goes out, the 90 degree elbows that make progress at the other end installation outlet of water shoot, on connect vertical telescopic tube, regulate the depth of water in wetland by this expansion pipe; 2) directly fix a drainpipe and mounting ball valve at the different heights place of pool wall, can be by the depth of water in the open to shut to regulate wetland of different heights ball valve.In whole wetland bottom, establish perforated pipe along the pond length direction by pool wall, perforated pipe passes all dividing plates (carrying out antiseepage) and end pool wall outside the pond, with ball valve control switching, opens ball valve when safeguarding, and emptying wetland is closed ball valve when normally moving.Current wetland can be ground type, semi-underground type and underground type, adopts brick mix structure, ground to have the gradient of 2% ~ 3% tendency water side.The feed-water end of current wetland should than the vertical current ecological filter low 20cm at least in water side, guarantee that the water outlet of vertical current ecological filter can enter in current wetland smoothly.
Described emergent can be one or more the combination in reed, hay grass, iris, Canna generalis Bailey and calamus.
Claims (6)
1. one kind for the reinforcement formula ecological treatment system that contains cynnematin sewage, it is characterized in that by vertical current ecological filter and underflow type artificial wet land dimerous; Wherein,
The vertical current ecological filter is three grades of step structures, and the first step, the second stage, third stage processing unit are the cavity body of top end opening, be connected successively, and the height of locus successively decreases step by step; The bottom of second stage processing unit is lower than the bottom of first step processing unit, and third stage processing unit is lower than the bottom of second stage processing unit;
Underflow type artificial wet land adopts the vertical baffling structure, namely by a plurality of dividing plates, current wetland is divided into some lattice, the upper edge of adjacent separator and lower edge alternately are provided with water hole, sewage flows through in water hole, make sewage become the up and down baffling in whole current wetland, be convenient to give full play to the work of whole wet land filler in order to improve treatment effect.
2. the reinforcement formula ecological treatment system for containing cynnematin sewage according to claim 1, it is characterized in that in described vertical current ecological filter, in the first step, the second stage, third stage processing unit, top layer is equipped with the water distribution pipe network, the middle level is equipped with filler, and low layer is equipped with collector pipe network; In third stage processing unit, collector pipe network is connected with a water shoot, and the water shoot mouth of pipe is higher than the collector pipe network of third stage processing unit, to extend the residence time of sewage in processing unit; At first sewage arrived first step processing unit by extracting, and the second stage processing unit of flowing through successively, third stage processing unit form the flow pattern of falling streaming, and the water shoot by bottom, tertiary treatment district enters underflow type artificial wet land at last.
3. the reinforcement formula ecological treatment system for containing cynnematin sewage according to claim 1, it is characterized in that in described vertical current ecological filter, between described first step processing unit and second stage processing unit, difference of altitude is 20 ~ 30cm, and between second stage processing unit and third stage processing unit, difference of altitude is 30 ~ 50cm.
4. the reinforcement formula ecological treatment system for containing cynnematin sewage according to claim 1, it is characterized in that in described vertical current ecological filter, the filler that lay in described each processing unit middle level is followed successively by from bottom to top: filler is the pebbles of particle diameter 1 ~ 2cm, and thickness is 8 ~ 12cm; Filler is rubble, and thickness is 12 ~ 16cm; Filler is the particle diameter fine sand, and thickness is 25 ~ 32cm; Earthworm bed of packings thickness is 40 ~ 48cm, puts into earthworm when device normally moves.
5. the reinforcement formula ecological treatment system for containing cynnematin sewage according to claim 1, is characterized in that described underflow type artificial wet land, and its longitudinal degree is 60 ~ 70cm; Wherein, lower floor's filler is that thickness is green stone of 40 ~ 50cm, and blue or green cobble-stone diameter is 1 ~ 3cm; The upper strata is pedosphere; In current wetland, selected plant is reed, hay grass, calamus.
6. the reinforcement formula ecological treatment system for containing cynnematin sewage according to claim 1, it is characterized in that described underflow type artificial wet land, its water-out manners has two kinds: (1) is establishing perforated pipe near at the bottom of the pond of wetland end, the middle portion of perforated pipe is installed threeway, connecting water shoot by threeway wears pool wall at the bottom of the pond and goes out, the 90 degree elbows that make progress at the other end installation outlet of water shoot, on connect vertical telescopic tube, regulate the depth of water in wetland by this expansion pipe; (2) fix a drainpipe and mounting ball valve at the different heights place of pool wall, by the depth of water in the open to shut to regulate current wetland of different heights ball valve.
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Application publication date: 20130612 |