Solid-liquid separation method and device for multi-material anaerobic fermentation liquid containing kitchen wastes

Abstract

The invention discloses a solid-liquid separation method and device for multi-material anaerobic fermentation liquid containing kitchen wastes and belongs to the technical field of kitchen waste treatment. A first discharging hole of a filter press is connected with a feeding hole of an oil-water separation tank by virtue of a pipeline; an overflow port of the oil-water separation tank is connected to a first conditioner by virtue of a pipeline; a submersible sewage pump is arranged in the first conditioner; the discharging hole of the submersible sewage pump is connected with a feeding hole of a multi-disk screw thickener; a second discharging hole of the multi-disk screw thickener is connected to a second conditioner by virtue of a pipeline; the second conditioner is connected with a feeding hole of a plunger pump by virtue of a pipeline; a discharging hole of the plunger pump is connected with a feeding hole of a plate-and-frame filter press; a residue outlet collection bucket of the plate-and-frame filter press is connected with the feeding hole of a residue delivery screw; the discharging hole of the residue delivery screw is connected with a residue box. Aiming at the material characteristics, the problems generated during operation of the original anaerobic fermentation liquid solid-liquid separation equipment with participation of kitchen wastes are gradually solved, the operating stability is improved, the treatment effect is ensured, the operating cost is reduced, secondary pollution is reduced, and the solid residues obtained by solid-liquid separation meet the national standard.

Description

technical field

[0001] The invention relates to a solid-liquid separation method and device for a multi-material anaerobic fermentation liquid containing kitchen waste, belonging to the technical field of kitchen waste treatment. Background technique

[0002] The main source of food waste is the kitchen industry and unit canteens. Due to many factors in current management and collection, the composition of food waste entering the factory is complex. Its components may include but not limited to: oil, water, fruit peels, vegetables, rice noodles , fish, meat, bones and waste tableware, glass containers, metal utensils, plastics, paper towels, etc. According to its material properties, the mainstream treatment process of domestic food waste is pretreatment + anaerobic digestion. At present, in the field of waste disposal, the industrial recycling park model is being established. It is a package project for the unified treatment of domestic waste, municipal sludge, urban excre...

Examples

Embodiment 1

[0051] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 Shown, a kind of multi-material anaerobic fermentation liquor solid-liquid separation method containing kitchen waste, comprises the following steps:

[0052] Step 1), the filtering and pressing step, pump the anaerobic fermented liquid into the feed port 1 of the filtering press, and the conical screw rod 2 pushes the material, and the material passes through the sieve drum 3 for preliminary solid-liquid separation, and the hair and plastic are separated. Impurities such as flakes, fibers, wood chips, and particles; as the impurities advance with the conical screw rod 2, the pitch of the screw gradually decreases, and the diameter of the cavity gradually decreases. Pressing and dehydration in the first zone, the solid slag after pressing is discharged through the slag discharge port 5, and the slurry produced after filtering and pressing is discharged through the first discharge...

Embodiment 2

[0068] Embodiment 2: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 As shown, a multi-material anaerobic fermentation liquid solid-liquid separation device containing kitchen waste, including a filter press, an oil-water separation tank, a screw stack thickener, a plate and frame filter press, a first conditioning tank and a second conditioning tank , the first discharge port 6 of the filter press is connected to the feed port 7 of the oil-water separation tank through a pipeline, and the overflow port 11 of the oil-water separation tank is connected to the first conditioning tank through a pipeline, and the first conditioning tank is connected to the screw stack through a pipeline and a submersible sewage pump The feed port 13 of the concentrator, the second discharge port 16 of the screw stack thickener is connected to the second conditioning tank through pipelines, and the second conditioning tank is connected to the feed port 20 of the plate a...

technical field

[0001] The invention relates to a solid-liquid separation method and device for a multi-material anaerobic fermentation liquid containing kitchen waste, belonging to the technical field of kitchen waste treatment. Background technique

[0002] The main source of food waste is the kitchen industry and unit canteens. Due to many factors in current management and collection, the composition of food waste entering the factory is complex. Its components may include but not limited to: oil, water, fruit peels, vegetables, rice noodles , fish, meat, bones and waste tableware, glass containers, metal utensils, plastics, paper towels, etc. According to its material properties, the mainstream treatment process of domestic food waste is pretreatment + anaerobic digestion. At present, in the field of waste disposal, the industrial recycling park model is being established. It is a package project for the unified treatment of domestic waste, municipal sludge, urban excre...

Examples

Embodiment 1

[0051] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 Shown, a kind of multi-material anaerobic fermentation liquor solid-liquid separation method containing kitchen waste, comprises the following steps:

[0052] Step 1), the filtering and pressing step, pump the anaerobic fermented liquid into the feed port 1 of the filtering press, and the conical screw rod 2 pushes the material, and the material passes through the sieve drum 3 for preliminary solid-liquid separation, and the hair and plastic are separated. Impurities such as flakes, fibers, wood chips, and particles; as the impurities advance with the conical screw rod 2, the pitch of the screw gradually decreases, and the diameter of the cavity gradually decreases. Pressing and dehydration in the first zone, the solid slag after pressing is discharged through the slag discharge port 5, and the slurry produced after filtering and pressing is discharged through the first discharge...

Embodiment 2

[0068] Embodiment 2: as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 As shown, a multi-material anaerobic fermentation liquid solid-liquid separation device containing kitchen waste, including a filter press, an oil-water separation tank, a screw stack thickener, a plate and frame filter press, a first conditioning tank and a second conditioning tank , the first discharge port 6 of the filter press is connected to the feed port 7 of the oil-water separation tank through a pipeline, and the overflow port 11 of the oil-water separation tank is connected to the first conditioning tank through a pipeline, and the first conditioning tank is connected to the screw stack through a pipeline and a submersible sewage pump The feed port 13 of the concentrator, the second discharge port 16 of the screw stack thickener is connected to the second conditioning tank through pipelines, and the second conditioning tank is connected to the feed port 20 of the plate a...

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