CN103408190A - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN103408190A CN103408190A CN2013103286773A CN201310328677A CN103408190A CN 103408190 A CN103408190 A CN 103408190A CN 2013103286773 A CN2013103286773 A CN 2013103286773A CN 201310328677 A CN201310328677 A CN 201310328677A CN 103408190 A CN103408190 A CN 103408190A
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- natural pond
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Abstract
The invention discloses a sewage treatment system which comprises a collection tank, a biogas tank, a residue discharge tank and a biogas liquid collection tank; the biogas tank, which is a closed tank, is connected with the collection tank through a feed opening and has an impervious layer laid at the bottom; excreta, sewage or the like is placed in the methane tank and automatically form a biogas residue layer, a biogas liquid layer and a biogas layer after fermenting in the biogas tank, and a residue discharge opening, a liquid outlet and a gas collecting opening, which are communicated with the biogas residue layer, the biogas liquid layer and the biogas layer respectively, are arranged at the periphery of the biogas tank; the residue discharge tank is communicated with the residue discharge opening through a pipeline; the biogas liquid collection tank is communicated with the biogas tank through the liquid outlet; a biogas liquid purification system is connected with the biogas liquid collection tank. According to the sewage treatment system provided by the invention, biogas, biogas liquid and biogas residue, which are produced through centralized processing of sewage, are utilized effectively, so that all-around utilization of sewage can be realized; meanwhile, water and residue can be separated automatically through reasonable pipeline design, the sewage utilization rate is high, the engineering construction cost is low, the economic benefit is high, and large scale popularization can be performed easily.
Description
Technical field
The present invention relates to sewage treatment area, particularly a kind of Sewage treatment systems for livestock industry.
Background technology
China has huge livestock industry industrial chain, for promoting national development and improving farmers' income and made great contribution.But in view of the restriction of China's present stage agricultural science and technology level, when producing, a large amount of sewage is directly entered rivers, causes serious pollution.Therefore, use for reference Experience in Development both domestic and external, China starts to greatly develop green agriculture and builds ecological environmental-protection cultivation.Wherein, comprised a kind ofly by after the fermentation of the movement of the mankind and animal or sewage collecting, obtained biogas and the Sewage treatment systems of various energy utilization device is set around biogas.Present stage, this Sewage treatment systems still rests on a small scale and application among a small circle, and most of methane-generating pit is sewage to be carried out to regeneration unilaterally, and after obtaining biogas, remaining Ye He natural pond, natural pond slag is abandoned as waste material.In addition, Zha He natural pond, natural pond liquid often is deposited on the methane-generating pit bottom, and Ye He natural pond, natural pond slag mixes and is difficult to separate, and after needing manually regularly to salvage cleaning, separation can further utilize.The utilization ratio of sewage is still very low, and the engineering construction cost is high, and economic benefit is low, is difficult to large-scale promotion.Simultaneously, the sewage after processing often is difficult to reach emission standard, causes severe contamination.
Summary of the invention
The present invention is directed to the defect of above-mentioned prior art, a kind of novel Sewage treatment systems is provided, can realize that automatic grain slag separates, the sewage utilization ratio is high, and the engineering construction cost is low, economic benefit is high and easy large-scale promotion.
According to an aspect of the present invention, provide a kind of Sewage treatment systems, comprise as follows: collecting tank: be used to collecting movement or sewage; Methane-generating pit: methane-generating pit is connected with collecting tank by opening for feed, this methane-generating pit is an airtight pond, and bottom is equipped with impervious barrier, in methane-generating pit, place movement or sewage etc., after in methane-generating pit, fermenting, automatically form natural pond slag blanket, natural pond liquid layer and biogas layer, at the methane-generating pit periphery, be respectively equipped with slag notch, liquid outlet and the gas collection mouth be communicated with natural pond slag blanket, natural pond liquid layer and biogas layer; The deslagging pond: described deslagging pond is communicated with slag notch by pipeline, be used to discharging the natural pond slag of methane-generating pit; Natural pond liquid collecting tank: described natural pond liquid collecting tank is communicated with methane-generating pit by liquid outlet, be used to storing natural pond liquid; The natural pond liquid purification system: described natural pond liquid purification system is connected with natural pond liquid collecting tank, and the natural pond liquid of discharging is carried out to the decontamination cycle utilization.
Further, the natural pond liquid purification system comprises acid-alkali accommodation pond, settling tank, anoxic pond, aeration tank, biological reaction tank, suspended substance settling tank and the photocatalyst system connected successively, wherein the acid-alkali accommodation pond is connected with natural pond liquid collecting tank, the water outlet that described photocatalyst system is provided with.
Further, the photocatalyst system is used terminal to be connected by water outlet with fish pond or other.
Further, the workflow of natural pond liquid purification system is: a, will in the liquid collecting tank of Ye Cong natural pond, natural pond, be input into the acid-alkali accommodation pond, the acid-alkali accommodation pond is adjusted or equilibrium the PH of natural pond liquid, makes it reach the demand that meets microorganism growth, and is conducive to follow-up flocculation sediment; B, natural pond liquid enter settling tank, use flocculation agent that the natural pond slag coagulation sedimentation suspended in the liquid of natural pond is got off; C, after sedimentation tank filter, natural pond liquid enters anoxic pond successively, denitrification effect is realized in aeration tank; D, then by biological reaction tank oxygenolysis organism or poisonous substance, sewage is carried out to deep purifying; E, remove residual suspended solid in the liquid of natural pond by the suspended substance settling tank; F, through the photocatalyst system, natural pond liquid is decoloured again, and effectively kill the bacterium in the liquid of natural pond; G, after above-mentioned processing, discharge water can reach the livestock and poultry pollutant emission standard fully, and flow out to utilize via water outlet, has so realized sewage purification recycle.
Further, in above-mentioned step b, also comprise the steps b-1: the natural pond slag precipitated becomes a blob of slag after press filtration, and be used to making compoiste fertilizer, the natural pond liquid of extrusion is collected and is back to natural pond liquid collecting tank by pipeline.
Further, the deslagging pond is connected by Residue extraction pipeline with slag notch, and the end be communicated with the natural pond slag bath at described Residue extraction pipeline is provided with valve, and slag bath collected natural pond slag in natural pond becomes a blob of slag by the pressure filter filter pressing, for making compoiste fertilizer, described natural pond liquid is collected and is back to natural pond liquid collecting tank by pipeline.
Further, the gas collection mouth is communicated to biogas generator or biogas burner.
Further, the biogas burner comprises marsh gas stove, biogas lamp, Marsh gas water heater and biogas heat-insulating lamp.
Further, in methane-generating pit, stop fermentation time and be no less than 30 days, and take the above-mentioned time and be a cycle, regularly the natural pond slag in methane-generating pit is expelled to the deslagging pond.
Further, methane-generating pit is provided with a plurality of opening for feeds, and described opening for feed is communicated to methane-generating pit by underground pipeline.
The workflow of Sewage treatment systems is: collecting tank is collected movement or sewage, the movement that to collect by opening for feed or sewage are sent methane-generating pit to and are fermented, in whole process, under the effect of air pressure and gravity, biogas can be gathered in the upper strata of methane-generating pit, natural pond liquid is gathered in the middle level of methane-generating pit, the natural pond slag is deposited in the bottom of methane-generating pit, natural pond liquid enters natural pond liquid collecting tank by liquid outlet, by the natural pond liquid purification system, natural pond liquid is carried out to purifying treatment and draw standard compliant purifying waste water, biogas connects biogas generator by air outlet or the biogas burner uses, the natural pond slag enters the deslagging pond by Residue extraction pipeline, the natural pond slag carries out press filtration, the natural pond liquid be press-filtered out flows into natural pond liquid collecting tank and carries out purification utilization, a remaining blob of slag is made compoiste fertilizer.
Beneficial effect of the present invention: Sewage treatment systems of the present invention comprises collecting tank, methane-generating pit, natural pond slag bath, natural pond liquid pool, gas collection mouth and natural pond liquid purification system.Collecting tank is for collecting sewage; Methane-generating pit ferments collected movement or sewage, obtains natural pond Zha, natural pond liquid and biogas.Because methane-generating pit is an airtight space, under the effect of air pressure and gravity, biogas can be gathered in the upper strata of methane-generating pit, and natural pond liquid is gathered in the middle level of methane-generating pit, and the natural pond slag is deposited in the bottom of methane-generating pit.Biogas is discharged by the gas collection mouth of being located at the methane-generating pit upper strata, natural pond liquid is discharged by the liquid outlet of being located at the methane-generating pit middle level, the natural pond slag of bottom is under the dual function of air pressure inside and gravity, be extruded, and discharge by the scum pipe of methane-generating pit bottom, realize that whereby grain slag separates, salvage cleaning and separate without artificial; The natural pond slag bath collects the natural pond slag, prepares next step processing; The gas collection mouth is for exporting the biogas that methane-generating pit produces, and natural pond liquid flows into the natural pond liquid purification system through liquid outlet and purifies and recycle.Sewage treatment systems of the present invention, by sewage is focused on, and effective biogas, Ye He natural pond, natural pond slag produced that utilize, realize the comprehensive utilization of sewage, simultaneously by rational piping design, realize that automatic grain slag divides, the sewage utilization ratio is high, and the engineering construction cost is low, economic benefit is high and easy large-scale promotion.
The accompanying drawing explanation
Fig. 1 is the structural representation of the Sewage treatment systems of one embodiment of the present invention
Fig. 2 is the schematic flow sheet of the Sewage treatment systems of one embodiment of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Fig. 1 and Fig. 2 have schematically shown the Sewage treatment systems according to one embodiment of the present invention.
As shown in Figure 1, Sewage treatment systems comprises as follows:
Collecting tank: be used to collecting movement or sewage;
Methane-generating pit: methane-generating pit is provided with a plurality of opening for feeds, opening for feed is communicated to collecting tank by underground pipeline, this methane-generating pit is an airtight pond, and bottom is equipped with impervious barrier, in methane-generating pit, place movement or sewage etc., in methane-generating pit, ferment, general fermentation period is 30 days, also can be according to practical situation (as temperature, humidity etc.) adjust the fermentation period time to reach best ferment effect, in methane-generating pit, automatically form the natural pond slag blanket after fermentation, natural pond liquid layer and biogas layer, at the methane-generating pit periphery, be respectively equipped with and the natural pond slag blanket, the slag notch that natural pond liquid layer and biogas layer are communicated with, liquid outlet and gas collection mouth, the gas collection mouth is communicated to biogas generator or biogas burner, the biogas burner comprises marsh gas stove, biogas lamp, Marsh gas water heater and biogas heat-insulating lamp.According to the time of fermentation period, regularly the natural pond slag in methane-generating pit is expelled to the deslagging pond in addition;
The deslagging pond: the deslagging pond is connected by Residue extraction pipeline with slag notch, the end be communicated with the natural pond slag bath at described Residue extraction pipeline is provided with valve, slag bath collected natural pond slag in natural pond becomes a blob of slag by the pressure filter filter pressing, and be used to making compoiste fertilizer, described natural pond liquid is collected and is back to natural pond liquid collecting tank by pipeline.
Natural pond liquid collecting tank: described natural pond liquid collecting tank is communicated with methane-generating pit by liquid outlet, be used to storing natural pond liquid;
The natural pond liquid purification system: the natural pond liquid purification system comprises acid-alkali accommodation pond, settling tank, anoxic pond, aeration tank, biological reaction tank, suspended substance settling tank, photocatalyst system and the fish pond connected successively, wherein the acid-alkali accommodation pond is connected with natural pond liquid collecting tank, described photocatalyst system is connected with fish pond by the water outlet be provided with, and the natural pond liquid of discharging is carried out to the decontamination cycle utilization.
Workflow at above-mentioned natural pond liquid purification system is: a, will in the liquid collecting tank of Ye Cong natural pond, natural pond, be input into the acid-alkali accommodation pond, the acid-alkali accommodation pond is adjusted or equilibrium the PH of natural pond liquid, make it reach the demand that meets microorganism growth, and be conducive to follow-up flocculation sediment; B, natural pond liquid enter settling tank, use flocculation agent that the natural pond slag coagulation sedimentation suspended in the liquid of natural pond is got off; The natural pond slag precipitated becomes a blob of slag after press filtration, be used to making compoiste fertilizer, the natural pond liquid of extrusion is collected and is back to natural pond liquid collecting tank by pipeline; C, after sedimentation tank filter, natural pond liquid enters anoxic pond successively, denitrification effect is realized in aeration tank; D, then by biological reaction tank oxygenolysis organism or poisonous substance, sewage is carried out to deep purifying; E, remove suspended solid residual in the liquid of natural pond by settling tank; F, through the photocatalyst system, natural pond liquid is decoloured again, and effectively kill the bacterium in the liquid of natural pond; G, after above-mentioned processing, discharge water can reach the livestock and poultry pollutant emission standard fully, and flows into fish pond via water outlet, has realized sewage purification recycle.Concrete following (the unit: mg/L) of water outlet data
As shown in Figure 2: the workflow of above-mentioned Sewage treatment systems, collecting tank is collected movement or sewage, the movement that to collect by opening for feed or sewage are sent methane-generating pit to and are fermented, in whole process, under the effect of air pressure and gravity, biogas can be gathered in the upper strata of methane-generating pit, natural pond liquid is gathered in the middle level of methane-generating pit, the natural pond slag is deposited in the bottom of methane-generating pit, natural pond liquid enters natural pond liquid collecting tank by liquid outlet, by the natural pond liquid purification system, natural pond liquid is carried out to purifying treatment and draw standard compliant purifying waste water, biogas connects biogas generator by air outlet or the biogas burner uses, the natural pond slag enters the deslagging pond by Residue extraction pipeline, the natural pond slag carries out press filtration, the natural pond liquid be press-filtered out flows into natural pond liquid collecting tank and carries out purification utilization, a remaining blob of slag is made compoiste fertilizer.
The Sewage treatment systems of the present embodiment, the capacity of methane-generating pit is 10000 cubic metres, day is disposed of sewage 300 tons, more than 2000 cubic metre of daily output biogas, and be provided with two biogas generators, generating every day is 3600 degree approximately, sewage fermentation produces biogas and for generating, can turn waste into wealth, realize the recycle of waste, be that plant is energy-conservation, the effective way of reduction of discharging, synergy.
The foregoing is only a kind of preferred implementation of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, all belong to protection scope of the present invention.
Claims (10)
1. Sewage treatment systems, is characterized in that, comprises as follows:
Collecting tank: be used to collecting movement or sewage;
Methane-generating pit: methane-generating pit is connected with collecting tank by opening for feed, this methane-generating pit is an airtight pond, and bottom is equipped with impervious barrier, in methane-generating pit, place movement or sewage etc., after in methane-generating pit, fermenting, automatically form natural pond slag blanket, natural pond liquid layer and biogas layer, at the methane-generating pit periphery, be respectively equipped with slag notch, liquid outlet and the gas collection mouth be communicated with natural pond slag blanket, natural pond liquid layer and biogas layer;
The deslagging pond: described deslagging pond is communicated with slag notch by pipeline, be used to discharging the natural pond slag of methane-generating pit;
Natural pond liquid collecting tank: described natural pond liquid collecting tank is communicated with methane-generating pit by liquid outlet, be used to storing natural pond liquid;
The natural pond liquid purification system: described natural pond liquid purification system is connected with natural pond liquid collecting tank, and the natural pond liquid of discharging is carried out to the decontamination cycle utilization.
2. Sewage treatment systems according to claim 1, it is characterized in that, described natural pond liquid purification system comprises acid-alkali accommodation pond, settling tank, anoxic pond, aeration tank, biological reaction tank, suspended substance settling tank and the photocatalyst system connected successively, wherein the acid-alkali accommodation pond is connected with natural pond liquid collecting tank, the water outlet that described photocatalyst system is provided with.
3. according to the described Sewage treatment systems of claim 1 to 2 any one, it is characterized in that, the workflow of described natural pond liquid purification system is: a, will in the liquid collecting tank of Ye Cong natural pond, natural pond, be input into the acid-alkali accommodation pond, the acid-alkali accommodation pond is adjusted or equilibrium the PH of natural pond liquid, make it reach the demand that meets microorganism growth, and be conducive to follow-up flocculation sediment; B, natural pond liquid enter settling tank, use flocculation agent that the natural pond slag coagulation sedimentation suspended in the liquid of natural pond is got off; C, after sedimentation tank filter, natural pond liquid enters anoxic pond successively, denitrification effect is realized in aeration tank; D, then by biological reaction tank oxygenolysis organism or poisonous substance, sewage is carried out to deep purifying; E, remove residual suspended solid in the liquid of natural pond by the suspended substance settling tank; F, through the photocatalyst system, natural pond liquid is decoloured again, and effectively kill the bacterium in the liquid of natural pond; G, after above-mentioned processing, discharge water can reach the livestock and poultry pollutant emission standard fully, and flow out to utilize via water outlet, has so realized sewage purification recycle.
4. according to the described Sewage treatment systems of claims 1 to 3 any one, it is characterized in that, described step b also comprises the steps b-1: the natural pond slag precipitated becomes a blob of slag after press filtration, and be used to making compoiste fertilizer, the natural pond liquid of extrusion is collected and is back to natural pond liquid collecting tank by pipeline.
5. according to the described Sewage treatment systems of claim 1 to 4 any one, it is characterized in that, described deslagging pond is connected by Residue extraction pipeline with slag notch, the end be communicated with the natural pond slag bath at described Residue extraction pipeline is provided with valve, slag bath collected natural pond slag in described natural pond becomes a blob of slag by the pressure filter filter pressing, for making compoiste fertilizer, described natural pond liquid is collected and is back to natural pond liquid collecting tank by pipeline.
6. according to the described Sewage treatment systems of claim 1 to 5 any one, it is characterized in that, described gas collection mouth is communicated to biogas generator or biogas burner.
7. according to the described Sewage treatment systems of claim 1 to 6 any one, it is characterized in that, described biogas burner comprises marsh gas stove, biogas lamp, Marsh gas water heater and biogas heat-insulating lamp.
8. according to the described Sewage treatment systems of claim 1 to 7 any one, it is characterized in that, in described methane-generating pit, stop fermentation time and be no less than 30 days, and take the above-mentioned time and be a cycle, regularly the natural pond slag in methane-generating pit is expelled to the deslagging pond.
9. according to the described Sewage treatment systems of claim 1 to 8 any one, it is characterized in that, described methane-generating pit is provided with a plurality of opening for feeds, and described opening for feed is communicated to collecting tank by underground pipeline.
10. according to the workflow of the described Sewage treatment systems of claim 1 to 9 any one, it is characterized in that, collecting tank is collected movement or sewage, the movement that to collect by opening for feed or sewage are sent methane-generating pit to and are fermented, in whole process, under the effect of air pressure and gravity, biogas can be gathered in the upper strata of methane-generating pit, natural pond liquid is gathered in the middle level of methane-generating pit, the natural pond slag is deposited in the bottom of methane-generating pit, natural pond liquid enters natural pond liquid collecting tank by liquid outlet, by the natural pond liquid purification system, natural pond liquid is carried out to purifying treatment and draw standard compliant purifying waste water, biogas connects biogas generator by air outlet or the biogas burner uses, the natural pond slag enters the deslagging pond by Residue extraction pipeline, the natural pond slag carries out press filtration, the natural pond liquid be press-filtered out flows into natural pond liquid collecting tank and carries out purifying treatment, a remaining blob of slag is made compoiste fertilizer.
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| CN106630282A (en) * | 2016-12-26 | 2017-05-10 | 航天凯天环保科技股份有限公司 | Method for treating biogas slurry in USR (up-flow solid reactor) methane tank |
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| CN103408190B (en) | 2016-06-22 |
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