KR100986036B1 - Method for treating livestock excretions - Google Patents

Abstract

PURPOSE: A livestock excretion processing method is provided to bio-chemically remove phosphorus and nitrogen from livestock excretion. CONSTITUTION: An adulteration processing bath(100) separates and removes the adulteration included in the livestock waste. The livestock waste is collected. Supernatant is separated from a centrifugal/condensing processing tank(104) by injecting a polymer coagulant to the livestock waste. The part of supernatant is supplied from a flow control bath(106) to a bio reaction bath(110). The remaining supernatant is supplied to a soil microorganism control tank(150) through a feed water supplying line. The organic materials and nitrogen are removed by nitrifying the supernatant. The mixed water is divided into precipitated sludge and supernatant. The remaining organic materials and phosphorus are removed by using the polymer coagulant. The Insoluble organic materials, the floating material, and colloidal solid element are removed. The part of the precipitated sludge in the sludge tank is supplied to the bio reaction tank. The remaining precipitated sludge is supplied to the soil microorganism control tank.

Description

Livestock Manure Treatment {METHOD FOR TREATING LIVESTOCK EXCRETIONS}

The present invention relates to a livestock manure treatment method, more specifically, to remove nitrogen and phosphorus in the livestock manure waste by a biological treatment method, and livestock manure treatment method for providing a biological treatment device for soil microorganisms cultured in a soil microorganism control tank. It is about.

Pollutants that cause river pollution include domestic sewage from households, livestock manure from livestock farms, factory wastewater from industry, and nonpoint pollution sources from rural areas.

In general, livestock excretions are excreted by livestock such as cattle, pigs, and chickens, and as the demand for livestock products increases, they tend to be massed and concentrated according to the commercialization and large-scale farming. Livestock manure is often used as manure for crops because it contains a lot of organic matter and fertilizers. However, the generation rate is too high and the rate of neglect increases, causing odors and providing habitat for various pests. It is discharged and polluting rivers, so efficient treatment and management are required.

Conventional sewage contaminants for treating nitrogen and phosphorus in organic materials include activated sludge process, contact oxidation method, batch sequencing batch reactor (SBR) method or carrier. This method is used, such as the treatment method applied to livestock manure with a high food to microorganism ratio (F / M ratio), nitrification inhibition phenomenon occurs, and the removal of phosphorus of NOx-N due to peroxidation There are problems such as suppressing microbial activity, economic burden due to external carbon source injection, and excessive processing time.

In addition, to remove odors from livestock manure, physical treatment methods such as adsorption, washing, and chemical treatment methods such as oxidation and neutralization methods and biological treatment methods using biofilters are mainly used, but they are not effective due to difficulties in operation and maintenance. I can't.

The present invention has been made in order to solve the above-mentioned conventional problems, by removing the nitrogen and phosphorus in the livestock manure waste by a biological treatment method, by providing a biological treatment device for soil microorganisms cultured in a soil microorganism control tank in the livestock manure It is an object of the present invention to provide a method for treating livestock manure that can remove odor generated.

Livestock manure treatment method of the present invention, the composite contaminant treatment tank separating / removing the coarse contaminants containing the livestock manure waste water; A collecting tank collecting livestock manure waste water provided from the contaminant treatment tank; Separating the supernatant by inputting a polymer flocculant into the livestock manure wastewater provided by the centrifugal / aggregation treatment tank; A flow rate control tank temporarily storing the symbol water provided from the centrifugation / aggregation treatment tank, providing some symbol water to the bioreactor, and providing the remaining symbol water to the soil microorganism adjustment tank through the raw water supply line; Bioreactor nitrifying the supernatant water provided from the flow control tank to remove organic matter and nitrogen and to proceed with phosphorus intake by the phosphorus removing microorganism; Separating the mixed water treated in the bioreactor into the precipitated sludge and the supernatant; Removing the untreated residual organic material and phosphorus from the supernatant water provided from the precipitation tank by the pressure flotation / aggregation tank using a polymer flocculant; And a filtration separation tank for removing insoluble organic matter, suspended matter, and colloidal solid components from the treated water in the pressure flotation / aggregation treatment tank. The bioreactor is supplied, and the remaining sedimentary sludge is characterized in that for supplying the soil microbial adjustment tank through the sludge supply line.

The soil microorganism control tank is cultured soil microorganisms to remove odor by using the symbol water provided from the flow control tank through the raw water supply line, sedimentary sludge provided from the sedimentation tank through the sludge supply line, and cultured odor removal Soil microorganisms may be supplied to the sump and bioreactor through the microbial supply line.

The soil microbial adjustment tank is preferably filled with pellets (pellets) to promote the growth and activation of microorganisms.

The bioreactor includes an anaerobic reactor, an anoxic reactor and an aeration reactor, the anaerobic reactor is to proceed with phosphorus ingestion by decomposing organic pollutants and phosphorus removal microorganisms of the supernatant water provided from the flow control tank, the anaerobic reactor By using an organic carbon source as an electron donor, NOx-N contained in the mixed water provided from the anaerobic reaction tank is denitrified with nitrogen gas and subjected to anoxic phosphorus intake reaction, and the aeration reaction tank is used in the mixed water provided in the anoxic reaction tank. The included NH ₃ -N can be oxidized to NO x -N for nitrification and phosphorus intake reaction.

In the above-described livestock manure treatment method of the present invention, by removing the nitrogen and phosphorus of the livestock manure waste by a biological treatment method, by providing a soil treatment microorganism cultured in a soil microorganism control tank to a biological treatment device, a large amount contained in the livestock manure wastewater While treating organic pollutants inexpensively, there is an effect that can remove the odor generated from the livestock manure wastewater treatment.

1 is a view for explaining a livestock manure treatment method according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In describing the present invention, the same reference numerals are used for the same means in order to facilitate understanding. Numerals used in the description of the present specification, for example, first and second, are merely identification symbols for distinguishing the same or similar entities.

1 is a view showing the configuration of a livestock manure treatment method according to an embodiment of the present invention.

Referring to FIG. 1, first, the complex composite treatment tank 100 separates / removes the coarse contaminant containing the livestock manure wastewater and provides the collection sludge 102 to separate inorganic sludge from the livestock manure wastewater.

The water collecting tank 102 collects the livestock manure wastewater provided from the contaminant treatment tank 100 to reduce the impact load caused by the load fluctuation of the introduced high concentration livestock manure wastewater.

The centrifugation / aggregation treatment tank 104 separates the solid-liquid phase by adding a polymer flocculant to the livestock manure wastewater provided from the collection tank 102 and provides the separated supernatant to the flow control tank 106.

The flow control tank 106 is for temporarily storing the symbol water provided from the centrifugation / aggregation treatment tank 104 to provide a predetermined amount continuously, and providing some symbol water to the bioreactor 110, and remaining symbol water It provides to the soil microbial adjustment tank 150 through the raw water supply line (60).

The bioreactor 110 nitrifies the supernatant water provided from the flow control tank 106 to remove organic matter and nitrogen and to promote P-release by phosphorus removal microorganisms (PAOs). The bioreactor 110 includes an anaerobic reactor 112, an anaerobic reactor 114 and an aeration reactor 116. Specifically, the anaerobic reactor 112 proceeds to phosphorus intake by a large amount of organic contaminant decomposition and phosphorus removal microorganisms (PAOs) to the symbol water provided from the flow control tank 106 to provide to the anaerobic reactor (114).

The anoxic reaction tank 114 denitrifies NOx-N contained in the mixed water provided from the anaerobic reaction tank 112 with nitrogen (N ₂ ) gas using an organic carbon source as an electron donor and performs an aerobic phosphorus intake reaction, and aeration The reactor 116 is provided with three to four partitions and oxidizes NH ₃ -N contained in the mixed water to NOx-N to nitrify the mixed water and perform a phosphorus intake reaction. The nitrification of the mixed water is provided to the oxygen-free reaction tank 114 through the inner conveying line 10 may be subjected to the denitrification process again.

Phosphorus removal microorganisms (PAOs) in the process of the bioreactor 110 is excessively accumulated PO ₄ ^- in the body, phosphorus removal microorganisms (DPBs) having a denitrification function is a kind of phosphorus removal microorganisms (PAOs) NOx-N Intake of an anoxic overdose is achieved by utilizing as an electron acceptor.

The mixed water from which organic matters are removed, nitrified and denitrified through the above process is introduced into the settling tank 120 and separated into sedimentary sludge and supernatant water. The separated symbol water is first stored in the primary treatment tank 130 and provided to the pressure flotation / aggregation treatment tank 132, and the pressure flotation / aggregation treatment tank 132 uses a polymer flocculant. Some untreated residual organics and phosphorus are removed.

The treated water treated by the pressure flotation / aggregation treatment tank 132 is secondarily stored in the secondary treatment water tank 134 and provided to the filtration separation tank 136, and the filtration separation tank 136 is discharged from the treated water. Insoluble organics, suspended solids and colloidal solids are removed.

Finally, the UV / electrolytic disinfection tank 140 is discharged after killing the pathogenic microorganisms contained in the treated water treated in the filtration separation tank (136).

Meanwhile, in order to maintain the suspended phase microorganisms in the bioreactor 110, a part of the sedimentary sludge in the sedimentation tank 120 is supplied to the anaerobic reactor 112 through an external transport line 20, and a portion of the remaining sedimentary sludge is supplied to the sludge supply line. Supply to the soil microorganism adjustment tank 150 through (30).

Soil microorganism adjustment tank 150 is filled with pellets (pellets) to promote the growth and activation of microorganisms to provide a soil microbial formatting environment. The pellet may be made of a dry material by mixing humus and clay soil and adding aluminum silicon and iron (Fe) to it and may be in the form of a rod. The soil microbial adjustment tank 150 may be further filled with a bio-light stone, which is a porous material serving as a microbial room, and a rozai power, which serves as a microbial growth agent.

Soil microorganism adjustment tank 150 is intake by using the symbol water provided from the flow control tank 106 through the raw water supply line 60 and the sedimentation sludge provided from the sedimentation tank 120 through the sludge supply line (30). (Iii) Cultivate soil microorganisms excellent for removal. The odor removing soil microorganisms cultured in the soil microorganism adjusting tank 150 are supplied to the collection tank 102 and the aeration reaction tank 116 through the microbial supply lines 50 and 40. The odor removing soil microorganisms supplied to the sump tank 102 and the aeration reaction tank 116 remove odors of the treated water in the sump tank 102 and the aeration reaction tank 116.

Although the detailed description of the present invention described above has been described with reference to a preferred embodiment of the present invention, a person skilled in the art without departing from the spirit and scope of the present invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

100: composite waste treatment tank 102: water collection tank
104: centrifugation / agglomeration tank 106: flow control tank
110: bioreactor 112: anaerobic reactor
114: oxygen-free reaction tank 116: aeration reaction tank
120: sedimentation tank 130: primary treatment water tank
132: pressurized flotation / flocculation tank 134: secondary treatment tank
136: filtration separation tank 140: UV / electrolytic sterilization tank
150: soil microbial adjustment tank

Claims (4)

Separating and removing the coarse contaminants containing the animal manure wastewater by the complex treatment tank;
A collecting tank collecting livestock manure waste water provided from the contaminant treatment tank;
Separating the supernatant by inputting a polymer flocculant into the livestock manure wastewater provided by the centrifugal / aggregation treatment tank;
A flow rate control tank temporarily storing the symbol water provided from the centrifugation / aggregation treatment tank, providing some symbol water to the bioreactor, and providing the remaining symbol water to the soil microorganism adjustment tank through the raw water supply line;
Bioreactor nitrifying the supernatant water provided from the flow control tank to remove organic matter and nitrogen and to proceed with phosphorus intake by the phosphorus removing microorganism;
Separating the mixed water treated in the bioreactor into the precipitated sludge and the supernatant;
Removing the untreated residual organic material and phosphorus from the supernatant water provided from the precipitation tank by the pressure flotation / aggregation tank using a polymer flocculant;
And a filtration separation tank for removing insoluble organic matter, suspended matter and colloidal solid components from the treated water in the pressure flotation / aggregation treatment tank.
Some of the sedimentary sludge in the sedimentation tank is supplied to the bioreactor through an external transport line, and some of the remaining sedimentary sludge is supplied to the soil microbial adjustment tank through the sludge supply line.
The soil microorganism control tank is cultured soil microorganisms to remove odor by using the symbolic water provided from the flow control tank through the raw water supply line, sedimentary sludge provided from the sedimentation tank through the sludge supply line, and cultured odor removal Livestock manure treatment method characterized in that to supply the soil microorganisms to the sump tank and the bioreactor through the microbial supply line.
delete The method of claim 1,
Livestock manure treatment method characterized in that the soil microbial adjustment tank is filled with pellets to promote the growth and activation of microorganisms.
The method of claim 1,
The bioreactor includes an anaerobic reactor, an anaerobic reactor and an aeration reactor,
The anaerobic reaction tank proceeds with phosphorus ingestion by decomposition of organic pollutants and phosphorus removal microorganisms of the supernatant water provided from the flow control tank,
The anoxic reaction tank uses an organic carbon source as an electron donor to denitrify NOx-N contained in the mixed water provided from the anaerobic reaction tank with nitrogen gas, and perform an oxygen-free phosphorus intake reaction.
The aeration reaction tank is a livestock manure treatment method characterized in that the oxidation of NH ₃ -N contained in the mixed water provided in the anoxic reaction tank to NOx-N nitridation and phosphorus intake reaction.

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