CN105541052A - Treatment canal for livestock and poultry breeding wastewater - Google Patents

Abstract

A livestock and poultry breeding wastewater treatment channel of the present invention includes anoxic anaerobic reaction section, aeration section, aquatic plant section, terrestrial plant section, clear water section, solar and wind power generation system, and anoxic anaerobic reaction section includes through The facultative oxygen zone, anoxic zone and anaerobic zone separated by the retaining wall and the baffle wall, the aeration section is located in the middle and upper part of the wastewater treatment channel for livestock and poultry breeding, and is connected with the outlet of the anaerobic zone, and is constructed according to the natural shape of the channel It is equipped with an inverted umbrella-shaped surface aerator and an overflow wall. The aquatic plant section is located downstream of the aeration section and is connected to the overflow wall of the aeration section. It is built according to the natural shape of the ditch. The aquatic plant section There is an overflow weir at the tail. The overflow weir is made of sand-free concrete and is vertical to the channel. The terrestrial plant section is located downstream of the aquatic plant section. The terrestrial plant section is an anti-seepage layer and a zeolite cushion from bottom to top. , filter layer and soil layer.

Description

A sewage treatment channel for livestock and poultry breeding

technical field

The invention relates to the technical field of wastewater treatment environmental protection devices, in particular to a wastewater treatment channel for livestock and poultry breeding.

Background technique

In recent years, my country's economy has developed rapidly, people's living standards have been greatly improved, and the increase in demand for livestock and poultry products has led to the rapid development of my country's livestock and poultry industry. Livestock and poultry farms have gradually grown, but at the same time it has also caused serious water pollution. Livestock and poultry breeding wastewater has a large amount of water, and the water volume fluctuates greatly, and the slag content, organic matter, and nitrogen and phosphorus concentrations are high. The environmental problems caused not only restrict economic development, but also have a profound impact on people's health. The annual discharge of livestock and poultry wastewater in my country far exceeds the sum of the discharge of industrial wastewater and domestic wastewater in my country. The pollution of livestock and poultry wastewater has attracted widespread attention. For the healthy development of the poultry breeding industry, it is imperative to research and develop efficient, simple, low-cost and rapid livestock and poultry breeding wastewater treatment methods according to local conditions.

As far as the current status of aquaculture wastewater treatment in our country is concerned, the cost of physical and chemical treatment technologies is often too high, mainly due to the large investment in equipment, high operating costs, and complicated operations. Therefore, according to the characteristics and sources of livestock and poultry breeding wastewater, it is necessary to develop wastewater treatment technologies and devices suitable for specific conditions in rural areas.

At the same time, there are some abandoned ditches in many rural areas, which have become garbage collection and distribution centers and stinky ditches over time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a livestock and poultry breeding wastewater treatment canal in order to solve the above-mentioned problems of the treatment of livestock and poultry breeding wastewater and the effective utilization of abandoned ditches.

The technical solution adopted by the present invention to solve the technical problem is: a livestock and poultry breeding wastewater treatment channel, including anoxic anaerobic reaction section, aeration section, aquatic plant section, terrestrial plant section, clean water section, solar and wind power generation system.

The anoxic anaerobic reaction section is located on the upper part of the livestock and poultry breeding wastewater treatment canal, and is built according to the natural shape of the idle ditch; Oxygen zone, anoxic zone and anaerobic zone, the head end of the anoxic zone is provided with a water inlet of the anoxic zone for feeding wastewater, the end of the anoxic zone is connected to the head end of the anoxic zone, and the end of the anoxic zone is connected to the anaerobic zone. The head end of the anaerobic zone is connected, and the end of the anaerobic zone is provided with an anaerobic zone outlet; the facultative zone, anoxic zone and anaerobic zone of the anoxic anaerobic reaction section are equipped with upper covers and methane gas collection and discharge pipes ; The retaining wall and deflector wall are made of sandless concrete and are vertically arranged with the channel. The anoxic anaerobic reaction section is rammed with plain soil to prevent seepage.

The aeration section is located in the middle and upper part of the wastewater treatment channel for livestock and poultry breeding, and is connected with the outlet of the anaerobic zone, and is constructed according to the natural shape of the ditch; the aeration section is equipped with an inverted umbrella-type surface aerator and an overflow wall . The inverted umbrella surface aerator is located at both ends of the aeration section; the overflow wall is located at the tail of the aeration section, is made of sand-free concrete, and is vertical to the channel. The aeration section is rammed with plain soil for anti-seepage.

The aquatic plant section is located downstream of the aeration section, connected to the overflow wall of the aeration section, and constructed according to the natural shape of the ditch; an overflow weir is provided at the end of the aquatic plant section, and the overflow weir Made of sand-free concrete, set perpendicular to the channel. The section of aquatic plants is compacted with plain soil for anti-seepage. Aquatic plants are selected for the aquatic plant section, and the selected aquatic plants should meet the following requirements: ① strong pollution resistance; ② adopt native species, plant according to soil, and adapt measures to local conditions; ③ strong disease resistance; ④ easy to harvest and convenient disposal.

The terrestrial plant section is located downstream of the aquatic plant section, and the terrestrial plant section includes an anti-seepage layer, a zeolite cushion layer, a filter material layer and a soil layer from bottom to top. The height of the upstream end of the terrestrial plant section is higher than the height of the downstream end, the upstream end of the terrestrial plant section is provided with a terrestrial plant section water inlet pipe, and the downstream end of the terrestrial plant section is provided with a terrestrial plant section water outlet pipe; The bottom of the plant segment is provided with a slope of 1%-5% to facilitate the flow of water.

The anti-seepage layer is compacted with plain soil.

The thickness of the zeolite cushion layer is 200-600 mm, and the particle size of the zeolite is 30-50 mm.

The thickness of the filter material layer is 100-300 mm, and the active ceramsite filter material is used, and the particle size of the active ceramsite is 20-30 mm. The filter material layer is provided with a water distribution pipe for the terrestrial plant section, and the water distribution pipe for the terrestrial plant section is connected to the water inlet pipe for the terrestrial plant section.

The thickness of the soil layer is 600-1200 mm, which is made by mixing plant straw, slag, biochar, animal manure and cultivated mellow soil.

Select terrestrial plants on the soil layer, and the selected terrestrial plants should meet the following requirements: ① strong pollution resistance; ② use native species, plant according to soil, and adapt measures to local conditions; ③ strong disease resistance; ④ easy to harvest , easy to handle; ⑤ strong waterlogging tolerance; ⑥ well-developed root system, dense stems and leaves; commonly used plants are Lishihe, reed, bermudagrass, gray green quinoa, goosegrass.

The clear water section is located downstream of the terrestrial plant section, is connected with the water outlet pipe of the terrestrial plant section, and is constructed according to the natural shape of the ditch. The clear water section is rammed with plain soil for anti-seepage.

The solar and wind power generation system is arranged on the upper part of the upper cover of the anoxic anaerobic reaction section, and the solar power and wind power generation system are connected to the inverted umbrella type surface aerator through cables.

Adopt the method for wastewater treatment of described livestock and poultry breeding wastewater treatment channel, its steps are:

①Wastewater enters the anoxic anaerobic reaction section from the water inlet of the facultative zone and then reciprocates along the baffle wall, passing through the facultative zone, anoxic zone and anaerobic zone in turn. The left and right flow of the biogas and the movement of the methane rise, the blocking effect of the baffle wall and the sedimentation effect of the sludge itself reduce the flow rate of the sludge, so a large amount of sludge is trapped in the anoxic anaerobic reaction section, and the deficient The microorganisms in the aerobic-anaerobic reaction section fully contact the organic matter in the wastewater, and the facultative bacteria in the facultative zone, and the heterotrophic bacteria in the anoxic zone and the anaerobic zone decompose the macromolecular organic matter in the wastewater into small molecular organic matter, and the insoluble The organic matter is converted into soluble organic matter; the wastewater then enters the aeration section, and the inverted umbrella surface aerator uses the electricity generated by solar and wind power generation systems to aerate the wastewater, producing the treatment effect of the oxidation ditch process.

② The treated water in the aeration section enters the aquatic plant section through the overflow wall, and the aquatic plants, microorganisms in the water and small animals treat the wastewater, and the treated water enters the water inlet pipe of the terrestrial plant section through the overflow weir.

③Water enters the terrestrial plant section through the water inlet pipe of the terrestrial plant section and the water distribution pipe of the terrestrial plant section. The wastewater is evenly distributed in the filter material layer. The terrestrial plants planted on the soil layer absorb the pollutants of the wastewater through the root system, and the wastewater is further Purification, the water treated in the terrestrial plant section is collected through the outlet pipe of the terrestrial plant section and enters the clean water section, and the clean water meets the standard for discharge or reuse.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the livestock and poultry breeding wastewater treatment channel of the present invention;

Fig. 2 is a schematic structural view of the terrestrial plant section of the present invention.

Among Fig. 1 and Fig. 2: 1. anoxic anaerobic reaction section, 1-1. retaining wall, 1-2. baffle wall, 1-3. concurrent oxygen zone, 1-4. anoxic zone, 1- 5. Anaerobic area, 1-6. Inlet of facultative oxygen area, 1-7. Outlet of anaerobic area, 2. Aeration section, 2-1. Inverted umbrella type surface aerator, 2-2. Overflow wall , 3. Aquatic plant section, 3-1. Aquatic plant, 3-2. Overflow weir, 4. Terrestrial plant section, 4-1. Seepage control layer, 4-2. Zeolite cushion, 4-3. Filter Material layer, 4-4. Soil layer, 4-5. Terrestrial plants, 4-6. Inlet pipe for terrestrial plants, 4-7. Outlet pipe for terrestrial plants, 4-8. Water distribution pipe for terrestrial plants , 5. Clear water section.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example

A wastewater treatment channel for livestock and poultry breeding, comprising an anoxic anaerobic reaction section 1, an aeration section 2, an aquatic plant section 3, a terrestrial plant section 4, a clean water section 5, and a solar and wind power generation system.

The anoxic anaerobic reaction section 1 is located on the upper part of the livestock and poultry breeding wastewater treatment canal, and is built according to the natural shape of the idle ditch; The anaerobic zone 1-3, the anoxic zone 1-4 and the anaerobic zone 1-5 are separated by the wall 1-2, and the head end of the anaerobic zone 1-3 is provided with an aerobic zone water inlet for feeding waste water 1-6, the end of the facultative zone is connected to the head of the anoxic zone, the end of the anoxic zone is connected to the head of the anaerobic zone, and the end of the anaerobic zone is provided with an anaerobic zone outlet 1-7; the anoxic anaerobic reaction The facultative zone, anoxic zone and anaerobic zone of the section are equipped with upper covers and methane gas collection and discharge pipes; the retaining wall 1-1 and the baffle wall 1-2 are made of sand-free concrete and are perpendicular to the channel set up. The anoxic anaerobic reaction section 1 adopts plain soil to tamp to prevent seepage.

The aeration section 2 is located in the middle and upper part of the wastewater treatment channel for livestock and poultry breeding, and is connected with the water outlet 1-7 of the anaerobic zone, and is constructed according to the natural shape of the ditch; the aeration section 2 is provided with an inverted umbrella type surface aeration machine 2-1 and overflow wall 2-2. The inverted umbrella surface aerator 2-1 is located at both ends of the aeration section 2; the overflow wall 2-2 is located at the tail of the aeration section, is made of sand-free concrete, and is vertical to the channel. The aeration section 2 is rammed with plain soil for anti-seepage.

The aquatic plant section 3 is located downstream of the aeration section 2, the aquatic plant section 3 is connected to the overflow wall 2-2 of the aeration section, and is constructed according to the natural shape of the ditch; the aquatic plant section 3 An overflow weir 3-2 is arranged at the tail, and the overflow weir 3-2 is made of sandless concrete and is vertically arranged with the channel. The aquatic plant segment 3 is compacted with plain soil for anti-seepage. Aquatic plants 3-1 are selected for the aquatic plant section, and the selected aquatic plants should meet the following requirements: ① strong pollution resistance; ② adopt native species, plant according to soil, and adapt measures to local conditions; ③ strong disease resistance; ④ easy Harvested and easy to dispose of.

The terrestrial plant section 4 is located downstream of the aquatic plant section 3, and the terrestrial plant section 4 includes an anti-seepage layer 4-1, a zeolite cushion layer 4-2, a filter material layer 4-3 and soil from bottom to top. Layers 4-4. The height of the upstream end of the terrestrial plant section is higher than the height of the downstream end, the upstream end of the terrestrial plant section is provided with a terrestrial plant section water inlet pipe 4-6, and the downstream end of the terrestrial plant section is provided with a terrestrial plant section outlet pipe 4-7; The bottom of the terrestrial plant section is provided with a 3% slope to facilitate the flow of water.

The anti-seepage layer 4-1 is compacted with plain soil.

The thickness of the zeolite cushion layer 4-2 is 600 mm, and the particle size of the zeolite is 30 mm.

The thickness of the filter material layer 4-3 is 200 mm, and the active ceramsite filter material is used, and the particle size of the active ceramsite is 25 mm. The filter material layer 4-3 is provided with a water distribution pipe 4-8 for the terrestrial plant section, and the water distribution pipe 4-8 for the terrestrial plant section is connected to the water inlet pipe 4-6 for the terrestrial plant section.

The thickness of the soil layer 4-4 is 1200 mm, which is made by mixing plant straw, slag, biochar, animal manure and cultivated mellow soil.

Select 4-5 terrestrial plants on the soil layer, and the selected terrestrial plant goosegrass meets the following requirements: 1. strong pollution resistance; 2. adopt native species, plant according to soil, and adapt measures to local conditions; 3. disease resistance Strong; ④ easy to harvest and easy to handle; ⑤ strong waterlogging tolerance; ⑥ well-developed root system, dense stems and leaves.

The clear water section 5 is located downstream of the terrestrial plant section 4, is connected with the water outlet pipes 4-7 of the terrestrial plant section, and is constructed according to the natural shape of the ditch. The clear water section 5 is compacted with plain soil for anti-seepage.

The solar and wind power generation system is arranged on the upper part of the upper cover of the anoxic anaerobic reaction section 1, and the solar and wind power generation system is connected to the inverted umbrella type surface aerator 2-1 through cables.

Adopt the method for wastewater treatment of described livestock and poultry breeding wastewater treatment channel, its steps are:

①Wastewater enters the anoxic anaerobic reaction section from the water inlet 1-6 of the facultative zone, then reciprocates along the baffle wall 1-2, and passes through the facultative zone 1-3, anoxic zone 1-4 and anaerobic zone 1- 5. The sludge in the anoxic anaerobic reaction section moves with the left and right flow of wastewater and the rise of biogas, and the blocking effect of the baffle wall 1-2 and the sedimentation of the sludge itself reduce the flow rate of the sludge. Therefore, a large amount of sludge is trapped in the anoxic anaerobic reaction section, and the microorganisms in the anoxic anaerobic reaction section fully contact with the organic matter in the wastewater. 4 and the heterotrophic bacteria in the anaerobic zone 1-5 decompose the macromolecular organic matter in the wastewater into small molecular organic matter, and the insoluble organic matter is converted into soluble organic matter; the waste water then enters the aeration section 2, and the inverted umbrella surface aerator 2-1 The electricity generated by the solar and wind power generation system is used to aerate the wastewater to produce the treatment effect of the oxidation ditch process.

② The water treated in the aeration section 2 enters the aquatic plant section 3 from the overflow wall 2-2, and the aquatic plant 3-1, microorganisms and small animals in the water treat the wastewater, and the treated water passes through the overflow weir 3-2 Enter the water inlet pipe 4-6 of the terrestrial plant section.

③Water enters the terrestrial plant section through the water inlet pipe 4-6 of the terrestrial plant section and the water distribution pipe 4-8 of the terrestrial plant section, the waste water is evenly distributed in the filter material layer, and the terrestrial plant 4-5 planted on the soil layer passes through the root system The pollutants in the wastewater are absorbed, and the wastewater is further purified. The treated water in the terrestrial plant section enters the clean water section 5 through the outlet pipe of the terrestrial plant section, and the clean water is discharged or reused up to the standard.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (2)

1. A livestock and poultry breeding wastewater treatment channel, characterized in that: comprising anoxic anaerobic reaction section (1), aeration section (2), aquatic plant section (3), terrestrial plant section (4), clear water section (5) with solar and wind power generation systems; The anoxic anaerobic reaction section (1) is located on the upper part of the livestock and poultry breeding wastewater treatment canal, and is built according to the natural shape of the idle ditch; the anoxic anaerobic reaction section includes a water retaining wall (1-1) The facultative oxygen zone (1-3), the anoxic zone (1-4) and the anaerobic zone (1-5) separated by the baffle wall (1-2), the said facultative oxygen zone (1-3) first The end of the facultative zone is provided with the water inlet (1-6) for feeding wastewater, the end of the facultative zone is connected with the head of the anoxic zone, the end of the anoxic zone is connected with the head of the anaerobic zone, and the end of the anaerobic zone is connected with the anaerobic zone. Oxygen zone water outlet (1-7); the facultative oxygen zone, anoxic zone and anaerobic zone of described anoxic anaerobic reaction section are all provided with loam cake and methane gas collection discharge pipe; water retaining wall (1- 1) and the baffle wall (1-2) are made of sand-free concrete and are vertically arranged with the channel; the anoxic anaerobic reaction section (1) is rammed with plain soil for anti-seepage; The aeration section (2) is located in the middle and upper part of the wastewater treatment channel for livestock and poultry breeding, and is connected with the water outlet (1-7) of the anaerobic zone, and is constructed according to the natural shape of the ditch; the aeration section is provided with an inverted umbrella type surface aerator (2-1) and overflow wall (2-2); the inverted umbrella type surface aerator (2-1) is located at the two ends of the aeration section; the overflow wall (2-2) Located at the end of the aeration section, it is made of sand-free concrete and set vertically with the channel; the aeration section is rammed with plain soil to prevent seepage; The aquatic plant section (3) is located downstream of the aeration section (2), the aquatic plant section (3) is connected to the overflow wall (2-2) of the aeration section, and is constructed according to the natural shape of the ditch The tail of the aquatic plant section (3) is provided with an overflow weir (3-2), and the overflow weir (3-2) is made of sandless concrete and is vertically arranged with the channel; the aquatic plant section ( 3) Use plain soil to compact and prevent seepage; select aquatic plants (3-1) for the aquatic plant section; The terrestrial plant section (4) is located downstream of the aquatic plant section (3), and the terrestrial plant section (4) is an anti-seepage layer (4-1) and a zeolite cushion (4-2) from bottom to top. ), filter layer (4-3) and soil layer (4-4); the height of the upstream end of the terrestrial plant section is higher than the height of the downstream end, and the upstream end of the terrestrial plant section is provided with a terrestrial plant section water inlet pipe (4-6), the downstream end of the terrestrial plant section is provided with a terrestrial plant section outlet pipe (4-7); the bottom of the terrestrial plant section is provided with a slope of 1%-5%, which is convenient for the flow of water; The anti-seepage layer (4-1) is compacted with plain soil; The thickness of the zeolite cushion (4-2) is 200-600 mm, and the zeolite particle size is 30-50 mm; The thickness of the filter material layer (4-3) is 100-300 millimeters, adopts active ceramsite filter material, and the active ceramsite particle diameter is 20-30 millimeters; Described filter material layer (4-3) is provided with terrestrial plants The section cloth water pipe (4-8), the terrestrial plant section water pipe (4-8) is connected to the terrestrial plant section water inlet pipe (4-6); The thickness of the soil layer (4-4) is 600-1200 mm, which is made by mixing plant straw, slag, biochar, animal manure and cultivated mellow soil; land plants (4-5 ); The clear water section (5) is located downstream of the terrestrial plant section (4), is connected with the terrestrial plant section outlet pipe (4-7), and is constructed according to the natural shape of the ditch; the clear water section (5) adopts Soil tamping for anti-seepage; The solar and wind power generation system is arranged on the upper part of the upper cover of the anoxic anaerobic reaction section (1), and the solar power and wind power generation system is connected to the inverted umbrella type surface aerator (2-1) through cables. 2. adopt a kind of livestock and poultry breeding wastewater treatment channel as claimed in claim 1 to carry out the method for wastewater treatment, it is characterized in that: have the following steps; ①Wastewater enters the anoxic anaerobic reaction section from the water inlet (1-6) of the facultative zone, and then reciprocates along the baffle wall, passing through the facultative zone (1-3), the anoxic zone (1-4) and the anaerobic zone in sequence. Zone (1-5), the sludge in the anoxic anaerobic reaction section moves with the left and right flow of wastewater and the rise of biogas, and the blocking effect of the baffle wall (1-2) and the sedimentation of the sludge itself The flow rate of the sludge is reduced, so a large amount of sludge is trapped in the anoxic anaerobic reaction section, the microorganisms in the anoxic anaerobic reaction section fully contact with the organic matter in the wastewater, and the anaerobic zone (1-3) Facultative bacteria, heterotrophic bacteria in the anoxic zone (1-4) and anaerobic zone (1-5) decompose the macromolecular organic matter in the wastewater into small molecular organic matter, and the insoluble organic matter is converted into soluble organic matter; the waste water then enters the exposure The gas section (2), the inverted umbrella type surface aerator (2-1) utilizes the electricity generated by the solar and wind power generation systems to aerate the wastewater to produce the treatment effect of the oxidation ditch process; ② The water treated in the aeration section (2) enters the aquatic plant section (3) from the overflow wall (2-2), and the aquatic plant (3-1) treats the wastewater with microorganisms and small animals in the water, and the treated water Water enters the water inlet pipe (4-6) of the terrestrial plant section through the overflow weir (3-2); ③Water enters the terrestrial plant section through the water inlet pipe (4-6) of the terrestrial plant section and the water distribution pipe (4-8) of the terrestrial plant section, and the waste water is evenly distributed in the filter layer, and the terrestrial plants planted on the soil layer ( 4-5) The pollutants of the waste water are absorbed through the root system, and the waste water is further purified. The treated water of the terrestrial plant section enters the clean water section (5) through the outlet pipe of the terrestrial plant section, and the clean water is discharged or reused up to the standard.