CN207685102U - A kind of compound temperature canopy ecological functions bed - Google Patents

Abstract

The utility model discloses a composite greenhouse ecological function bed, which comprises a composite greenhouse and an internal ecological function bed, the composite greenhouse is a steel frame structure unit, and the ceiling is combined and closed with highly hydrophobic glass; the ecological function The bed is distributed sequentially from bottom to top with a bed reinforcement layer, a fly ash filter material treatment layer, a coarse gravel drainage layer, an earthworm layer, and a sludge placement layer. The composite greenhouse ecological function bed provided by the utility model can not only reduce the moisture in the sludge, reduce the dry matter of the sludge, but also realize the reduction of the moisture and dry matter of the sludge, and can effectively avoid the sludge intercepted on the surface of the treatment system Smells out and breeds mosquitoes and flies. The treated sludge has a low moisture content and a significant reduction effect.

Description

A composite greenhouse ecological function bed

technical field

The utility model relates to a sludge reduction and ecological treatment method, in particular to an ecological function bed of a compound greenhouse.

Background technique

At present, after the sludge in the sewage treatment plant has been flocculated and conditioned, the moisture content of the sludge can be reduced to about 80% by using dehydration equipment such as belt filter press, plate and frame filter press and centrifuge, but the moisture content of the sludge can be further reduced to Below 60%, it is difficult to achieve at present. Sludge with a high moisture content not only increases the transportation cost of sludge, but also sludge with a moisture content of more than 60% cannot meet the disposal requirements of subsequent sludge landfill, composting, and incineration. Because the sludge contains a large amount of heavy metals, pathogenic bacteria and refractory organic matter, its utilization is greatly restricted. Most of the solids are microbial residues, and the organic components in the solids account for 50-80%. Therefore, the main purpose of sludge treatment is to reduce the moisture in sludge, reduce the total volume of sludge, and stabilize the organic components in sludge.

The existing sludge treatment processes in sewage treatment plants generally include concentration, dehydration, anaerobic digestion, aerobic digestion, etc. Patent CN102515451A discloses a sludge drying filter bed based on constructed wetland, which is based on a wetland for sludge treatment, and the mud distribution pipes are distributed on the surface of the wetland, and the surface of the sludge system will intercept the sludge and emit odor Odor, easy to breed mosquitoes and flies, purely due to the high moisture content of the sludge in the ecosystem, the long disposal cycle, and low sludge treatment efficiency.

Utility model content

Purpose of the utility model: In order to solve the above-mentioned problems in the prior art, the utility model provides an ecological function bed for a composite greenhouse.

Technical solution: The composite greenhouse ecological function bed described in the utility model includes a composite greenhouse and an ecological function bed inside, the composite greenhouse is a steel frame structure unit, and the ceiling is combined and closed with highly hydrophobic glass; The ecological functional bed is distributed sequentially from bottom to top with a bed reinforcement layer, a fly ash filter material treatment layer, a coarse gravel drainage layer, an earthworm layer, and a sludge placement layer.

The surface of the ecological function bed is arranged with mud pipes and interplanted with taro and tall fescue turf. Sow potassium-rich taro (Colocasia esculenta) from spring to autumn, and interplant tall fescue turf rich in heavy metals in winter after harvesting.

An anti-seepage film is laid on the bed reinforcement layer, and a collection and drainage pipe is laid on the anti-seepage film. One end of the collection and drainage pipe is connected to the ventilation pipe, and the other end is connected to the water outlet pipe.

The steel frame structure unit is 5-10m long, 3-5m wide, and 2-3m high; the highly hydrophobic glass is 100-200cm long and 50-80cm wide. When the amount of sludge is large, unit combination can be carried out.

The highly hydrophobic glass is a layer of 0.5-2 cm nano-silica hydrophobic material attached to the surface of ordinary glass. Highly hydrophobic glass is conducive to the rapid drainage of water in evaporated sludge. It is an optimized transformation of ordinary glass, and the cost is low. It can be easily realized by adding related materials in the production process of ordinary glass.

The thickness of the fly ash filter material treatment layer is 30-50 cm; the thickness of the coarse gravel drainage layer is 30-50 cm, and the particle size of the coarse gravel is 3-5 cm; the earthworm layer is arranged with 30-50 worms Love wins earthworms.

The side wall of the composite greenhouse is provided with a drainpipe, and the lower edge of the highly hydrophobic glass is provided with a collecting tank. The top of the drainpipe is connected to the collecting tank, and the bottom is connected to the collecting and draining pipe.

The method for sludge reduction and ecological treatment using the composite greenhouse ecological function bed includes pumping sludge with a water content of 90 to 98 wt% into a regulating tank, and then intermittently pumping the sludge according to the residence time of the sludge in the functional bed Import the composite greenhouse ecological function bed, and the residence time is 25 to 48 hours.

When the water content of the bed sludge layer is below 45% and the thickness reaches below 15cm, one treatment cycle is completed, the sludge pumping is stopped, and the next treatment cycle starts after the sludge is scraped out. Sludge is collected by scrapers and shipped out for disposal.

The utility model dries the sludge through a high-transmittance temperature shed, so that the moisture content of the sludge is reduced, and the sludge can be further mineralized and degraded under the action of the earthworm layer (Chizi Aisheng earthworm), and the reduction can be realized. The volatilized water is guided and collected effectively through the highly hydrophobic glass. The earthworm layer enables the original microbial metabolic chain to be extended and expanded. Through a series of enrichment and diffusion, synthesis and decomposition, antagonism and synergy, the activity of enzymes in the sludge is reduced, the content of heavy metals is reduced, and the harmlessness of pathogens is promoted. The neutral phosphatase, protease and invertase activities of the treated sludge continued to decrease, which provided effective support for the subsequent planting of taro and tall fescue turf to further degrade and digest sludge residues. Specific plant taro and tall fescue turf are planted in the composite greenhouse ecological function bed provided by the utility model. On the one hand, taro and tall fescue turf can degrade and digest sludge residues; The yield of thatch huds has been greatly increased.

The fly ash filter material treatment layer and the coarse gravel drainage layer are mainly used for sewage filtration and purification and sludge particle interception. The gravel drainage layer is set on the fly ash filter material treatment layer and mainly plays three roles: 1. Improve the ventilation of the earthworm layer conditions, so that earthworms can play a better role in sludge degradation; 2. To prevent the sludge from clogging the filter layer, the gravel particle size is large and the porosity is large, so that the sludge particles are not easy to congest the packing layer; 3. Gravel Large particle size and large porosity improve the conditions for the growth of taro and tall fescue turf roots, making taro and tall fescue turf easier to grow. Taro and tall fescue turf roots are easy to grow, the space is loose, and it is not easy to affect the ecological function Physical damage to the bed body; 4. It is convenient to quickly drain the water in the sludge and avoid the impact on the submersion of the earthworm layer.

Beneficial effect: compared with the prior art, the utility model has the following advantages:

1. The composite greenhouse ecological function bed provided by the utility model can not only reduce the moisture in the sludge, reduce the total volume of the sludge, but also realize the reduction of the sludge, and can prevent the sludge from being trapped on the surface of the sludge system to emit odor smell, breed mosquitoes and flies, and the treated sludge has a low moisture content and a high degree of reduction. Planting specific plants taro and tall fescue turf on the composite greenhouse ecological function bed provided by the utility model can not only improve the sludge treatment efficiency, but also greatly increase the output of taro and tall fescue turf.

2. Using the method provided by the utility model to treat the sludge in the sewage can reduce the weight by more than 90%. It has the advantages of no secondary pollution, simple operation, low investment and operation costs, wide adaptability, etc., economic benefits, environmental protection The benefits and social benefits are good.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model composite greenhouse ecological function bed.

Detailed ways

Example 1

An ecological function bed of a composite greenhouse, as shown in Figure 1, includes a composite greenhouse and an ecological function bed inside it.

The composite greenhouse is a steel frame structure unit with a length of 5-10m, a width of 3-5m, and a height of 2-3m, and a combination of highly hydrophobic glass 1 with a length of 100-200cm and a width of 50-80cm closed. The highly hydrophobic glass 1 is a layer of 0.5-2 cm nano silicon dioxide hydrophobic material attached to the surface of ordinary glass.

The bottom of the ecological functional bed is a bed body reinforcement layer, and an anti-seepage film is laid on the bed body reinforcement layer, and a collection and drainage pipe 9 is laid on the top of the anti-seepage film. One end of the collection and drainage pipe 9 is connected to the ventilation pipe, and the other end is connected to the outlet pipe. The ecological function bed is divided into five layers, which are distributed from bottom to top. The bottom layer is the bed body reinforcement layer, the penultimate layer is a fly ash filter material treatment layer 8 with a thickness of 30-50 cm, and the penultimate layer is a thickness of 30 cm. Coarse gravel drainage layer 7 with a particle size of ~50 cm and a coarse gravel particle size of 3 to 5 cm, and an earthworm layer 6 that is the fourth from last layer. The earthworm layer is arranged with 30 to 50 Eisenia earthworms, and the uppermost layer of the bed is a sludge placement layer 5 , the thickness does not exceed 30cm. The ecological function bed is arranged with mud pipes and interplanted with taro and tall fescue turf.

The side wall of the composite greenhouse is provided with a drainpipe 3, and the lower edge of the highly hydrophobic glass 1 is provided with a collection tank 2, the top of the drainpipe 3 communicates with the collection tank 2, and the bottom of the drainpipe 3 communicates with the collection and drainage pipe 9.

Example 2

A sludge reduction and ecological treatment method, comprising the following steps:

The sludge with a water content of 98% is pumped into the regulating tank, and then the sludge is intermittently introduced into the composite greenhouse ecological functional bed according to the residence time of the sludge in the functional bed, and the residence time is 30 hours. The composite greenhouse ecological function bed includes the composite greenhouse and its internal ecological function bed. The composite greenhouse is a steel frame structure unit with a length of 5m, a width of 3m, and a height of 2m. The ceiling is 100cm long and 50cm wide. Highly hydrophobic glass with 0.5cm nano-silica hydrophobic material. The bottom of the ecological function bed is a bed reinforcement layer, and an impermeable membrane is laid on the bed reinforcement layer, and a collection and drainage pipe is laid on the impermeability membrane. One end of the collection and drainage pipe is connected to the ventilation pipe, and the other end is connected to the outlet pipe. The penultimate layer The thickness of the fly ash filter material treatment layer is 30cm, the penultimate layer is a coarse gravel drainage layer with a thickness of 30cm and a particle size of 5cm, and the penultimate earthworm layer is arranged with 35 chrysalis earthworms, and the uppermost layer of the bed is sewage Mud placement layer. The surface of the ecological function bed is arranged with a mud distribution pipe 4 and interplanted with taro and tall fescue turf. After one treatment cycle is completed, the sludge pumping is stopped, the moisture content of the sludge layer in the test bed is 40%, the thickness is 15cm, and the sludge reduction is 97%. After the sludge is scraped out, the next treatment cycle begins. Sludge is collected by scrapers and shipped out for disposal. The yield of taro is increased by 35% compared with that of taro planted in common soil. The yield of tall fescue turf was 38% higher than that of tall fescue turf planted in normal soil.

Example 3

The sludge with a water content of 96% is pumped into the regulating tank, and then the sludge is intermittently introduced into the composite greenhouse ecological functional bed according to the residence time of the sludge in the functional bed, and the residence time is 35 hours. The composite greenhouse ecological function bed includes the composite greenhouse and its internal ecological function bed. The composite greenhouse is a steel frame structure unit with a length of 4m, a width of 2m, and a height of 2.5m. The ceiling is 150cm long and 60cm wide. Ordinary glass Highly hydrophobic glass coated with 1cm nano-silica hydrophobic material. The bottom of the ecological function bed is a bed reinforcement layer, and an impermeable membrane is laid on the bed reinforcement layer, and a collection and drainage pipe is laid on the impermeability membrane. One end of the collection and drainage pipe is connected to the ventilation pipe, and the other end is connected to the outlet pipe. The penultimate layer The thickness of the fly ash filter material treatment layer is 40cm, the penultimate layer is a coarse gravel drainage layer with a thickness of 50cm and a particle size of 5cm, and the penultimate earthworm layer is arranged with 40 Chizi Eisen earthworms, and the uppermost layer of the bed is sewage Mud placement layer. The surface of the ecological function bed is arranged with a mud distribution pipe 4 and interplanted with taro and tall fescue turf. After one treatment cycle is completed, the sludge pumping is stopped, the moisture content of the sludge layer in the test bed is 45%, the thickness is 14cm, and the sludge reduction is 93%. After the sludge is scraped out, the next treatment cycle begins. Sludge is collected by scrapers and shipped out for disposal. The yield of taro is increased by 38% compared with that of taro planted in common soil. The yield of tall fescue turf was 39% higher than that of tall fescue turf planted in normal soil.

Example 4

The sludge with a water content of 92% is pumped into the regulating tank, and then the sludge is intermittently introduced into the composite greenhouse ecological functional bed according to the residence time of the sludge in the functional bed, and the residence time is 28 hours. The composite greenhouse ecological function bed includes the composite greenhouse and the internal ecological function bed, which are intermittently discharged into the composite greenhouse ecological function bed. The composite greenhouse is a steel frame structure unit with a length of 5m, a width of 3m, and a height of 3m. The ceiling is 200cm long and 80cm wide. Ordinary glass is coated with 2cm nano-silica hydrophobic material with high hydrophobicity glass. The bottom of the ecological function bed is a bed reinforcement layer, and an impermeable membrane is laid on the bed reinforcement layer, and a collection and drainage pipe is laid on the impermeability membrane. One end of the collection and drainage pipe is connected to the ventilation pipe, and the other end is connected to the outlet pipe. The penultimate layer The thickness of the fly ash filter material treatment layer is 50cm, the penultimate layer is a coarse gravel drainage layer with a thickness of 50cm and a particle size of 5cm, and the penultimate earthworm layer is arranged with 50 chrysalis earthworms, and the uppermost layer of the bed is sewage Mud placement layer. The surface of the ecological function bed is arranged with a mud distribution pipe 4 and interplanted with taro and tall fescue turf. After one treatment cycle is completed, the sludge pumping is stopped. The moisture content of the sludge layer in the test bed is 38%, the thickness is 15cm, and the sludge reduction is 92%. After the sludge is scraped out, the next treatment cycle begins. Sludge is collected by scrapers and shipped out for disposal. The yield of taro is increased by 36% compared with that of taro planted in common soil. The yield of tall fescue turf was 38% higher than that of tall fescue turf planted in normal soil.

Comparative example 1

Same as Example 2, the only difference is that reeds are planted on the surface of the ecological functional bed. The yield of reeds is 20% higher than that of reeds planted in ordinary soil.

It can be seen that the composite greenhouse ecological function bed provided by the utility model can only greatly increase the output of specific plants taro and tall fescue turf.

Claims (7)

1. a kind of compound temperature canopy ecological functions bed, which is characterized in that described including compound Wen Peng and its internal ecological functions bed Compound temperature canopy is steel frame construction unit, and ceiling is combined closing with high hydrophobicity glass；The ecological functions bed is from below to up It is sequentially distributed bed body reinforcing layer, flyash filtrate process layer, coarse gravel drainage blanket, earthworm layer, sludge placed layer.

2. compound temperature canopy ecological functions bed according to claim 1, which is characterized in that the ecological functions bed surface layout Cloth mud pipe and set ganoid konjaku taro and Festuca Arundinacea turf.

3. compound temperature canopy ecological functions bed according to claim 1, which is characterized in that be laid with above the bed body reinforcing layer There is antiseepage film, integrate draining pipe is covered with above antiseepage film, integrate draining pipe one end connects snorkel, and the other end connects outlet pipe.

4. compound temperature canopy ecological functions bed according to claim 1, which is characterized in that the steel frame construction unit is a length of 5~10m, width are 3~5m, a height of 2~3m；A length of 100~the 200cm of high hydrophobicity glass, width are 50~80cm.

5. compound temperature canopy ecological functions bed according to claim 1, which is characterized in that the high hydrophobicity glass is general Logical surface layer of glass adheres to the nano silicon dioxide hydrophobic material of one layer of 0.5~2cm.

6. compound temperature canopy ecological functions bed according to claim 1, which is characterized in that the flyash filtrate process layer Thickness is 30~50cm；The thickness of the coarse gravel drainage blanket is 30~50cm, coarse gravel grain size is 3~5cm；The earthworm 30~50 compatriots of earthworm layer arrangement love victory earthworm.

7. compound temperature canopy ecological functions bed according to claim 1, which is characterized in that the side wall of the compound temperature canopy is equipped with Drainpipe, high hydrophobicity glass lower edge are equipped with collecting tank, are connected with collecting tank at the top of the drainpipe, bottom and integrate draining pipe It is connected.