CN214218493U - Distributed rural domestic sewage composite pretreatment equipment - Google Patents

Abstract

The utility model relates to a distributed rural domestic sewage's compound pre-treatment equipment, can effectively solve rural domestic sewage's combined treatment, prevent the problem to environmental pollution, its structure is, be equipped with the domestic sewage import on the artifical grid, the domestic sewage delivery port on the artifical grid is linked together with the water inlet of first room that flows down, the delivery port of first room that flows down is linked together with the water inlet of room that flows up, the delivery port of room that flows up is linked together with the water inlet of second room that flows down, the delivery port of second room that flows down is linked together with the water inlet of biochemical or materialization equipment, be equipped with the delivery port on biochemical or materialization equipment, first room that flows down, the room that flows up, be equipped with mud suction opening on the second room that flows down respectively, and be linked together with mud suction pump, be equipped with sewage elevator pump on the pipeline between second room that flows down and biochemical or materialization equipment. The utility model discloses equipment structure is simple, and is novel unique, and the installation is used in a flexible way, convenient, and is with low costs, is fit for rural small-scale distributed sewage composite pretreatment.

Description

Distributed rural domestic sewage composite pretreatment equipment

Technical Field

The utility model relates to sewage treatment, in particular to a compound pretreatment device for decentralized rural domestic sewage.

Background

Along with the improvement of life and the increase of water consumption of people, rural domestic sewage is more and more, and the sewage contains a lot of harmful substances, if the sewage is directly discharged, the pollution to the environment can be caused, the grey water and the black water of the rural domestic sewage are often mixed and discharged at present, and after a dry-land water-changing toilet is implemented in the northern area, the situation that the domestic sewage contains a small amount of black water or livestock and poultry excrement and the like due to the damage or the abandonment of a nearby septic tank still exists sometimes. Therefore, the improvement and innovation of rural domestic sewage treatment equipment are imperative.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, in order to overcome the defects of the prior art, the utility model aims to provide a compound pretreatment device for decentralized rural domestic sewage, which can effectively solve the compound treatment of rural domestic sewage and prevent the problem of environmental pollution.

The utility model provides a composite pretreatment device for decentralized rural domestic sewage, which comprises an artificial grid, a sewage lift pump and biochemical or physicochemical equipment, wherein the artificial grid is provided with a domestic sewage inlet, a domestic sewage outlet on the artificial grid is communicated with a water inlet of a first downflow chamber, a water outlet of the first downflow chamber is communicated with a water inlet of an upflow chamber, a water outlet of the upflow chamber is communicated with a water inlet of a second downflow chamber, a water outlet of the second downflow chamber is communicated with a water inlet of the biochemical or physicochemical equipment, the biochemical or physicochemical equipment is provided with a water outlet, the first downflow chamber is provided with a sludge suction port, and is communicated with a first sludge suction pump, the upstream chamber is provided with a sludge suction port and is communicated with a second sludge suction pump, the second downstream chamber is provided with a sludge suction port, and is communicated with a third sludge suction pump, and a sewage lifting pump is arranged on a pipeline between the second downflow chamber and the biochemical or physicochemical equipment.

The utility model discloses equipment structure is simple, and is novel unique, and the installation is used in a flexible way, convenient, and is with low costs, especially adapted rural small-scale distributed sewage composite pretreatment, is particularly suitable for rural local no professional technical personnel and to the demand that unmanned on duty required height, is a big innovation on rural domestic sewage handles, has apparent economy and social.

Drawings

Fig. 1 is a diagram of the structure block of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in figure 1, the utility model relates to a compound pretreatment equipment of distributed rural domestic sewage, which comprises an artificial grid, a sewage lift pump and a biochemical or physicochemical equipment, wherein the artificial grid 1 is provided with a domestic sewage inlet, a domestic sewage outlet on the artificial grid 1 is communicated with a water inlet of a first downflow chamber 2, a water outlet of the first downflow chamber 2 is communicated with a water inlet of an upflow chamber 3, a water outlet of the upflow chamber 3 is communicated with a water inlet of a second downflow chamber 4, a water outlet of the second downflow chamber 4 is communicated with a water inlet of the biochemical or physicochemical equipment 6, the biochemical or physicochemical equipment 6 is provided with a water outlet, the first downflow chamber 2 is provided with a sludge suction port and is communicated with a first sludge suction pump 7-1, the upflow chamber 3 is provided with a sludge suction port and is communicated with a second sludge suction pump 7-2, the second downflow chamber 4 is provided with a sludge suction port, and is communicated with a third sludge suction pump 7-3, and a sewage lifting pump 5 is arranged on a pipeline between the second downflow chamber 4 and the biochemical or physicochemical equipment 6.

In order to ensure the use effect and convenient use, the top of the upstream chamber 3 is provided with a triangular weir, and domestic sewage flows into the second downstream chamber 4 through the triangular weir;

the water outlets of the first downflow chamber 2 and the upflow chamber 3 are respectively provided with a submersible sewage pump, and the effluent is lifted to a lower-level processing unit;

the first downflow chamber 2, the upflow chamber 3 and the second downflow chamber 4 are combined together to form a pretreatment reaction structure (system or pool), the length-width ratio of each chamber is 1-1.5: 1, 4-5 flow partition plates are arranged in each chamber to form a flow partition chamber, the front first flow partition chamber is larger than the width of the rear flow partition chamber, the length and the width of the first flow partition chamber and the subsequent unit flow partition chambers are 1-1.2: 1, the first downflow chamber 2, the upflow chamber 3 and the second downflow chamber 4 are all hollow squares made of steel concrete, precast concrete and glass fiber reinforced plastic, the top of each flow partition chamber is provided with an inspection opening, the size of each flow partition chamber is 800mm × 800mm, the inspection opening is covered with a cover plate, and the size of the cover plate is 880mm × 880 mm;

the triangular weir at the top of the up-flow chamber 3 is a 90-degree right-angle triangular weir, and the length of the triangular weir is the same as the width of the up-flow chamber 3;

the grid gap of the artificial grid 1 is 5-10 mm.

The biochemical or physicochemical equipment 6 is the existing equipment.

It should be noted that, the utility model discloses each part all is current product except stating in addition, the utility model discloses a contribution lies in, with these parts through scientific design, reasonable combination is in the same place, constitutes a novel distributed rural domestic sewage's compound pre-treatment equipment, effectively is used for the compound preliminary treatment to rural domestic sewage.

The utility model has the use condition that the domestic sewage enters the artificial grating from the water inlet of the artificial grating 1, large-particle pollutants in the domestic sewage are preliminarily removed, and then enter the first downflow chamber 2 through the water outlet of the artificial grating; the first downflow chamber 2, the upflow chamber 3 and the second downflow chamber 4 form a domestic sewage pretreatment system (pool), the upper part of each chamber is provided with an inspection hole for periodic inspection and cleaning, and sludge is pumped out by a sludge suction pump and transported; the domestic sewage after the pretreatment reaction is pumped into a biochemical or physicochemical device 6 by a sewage lifting pump 5 for biochemical or physicochemical treatment, thereby realizing the composite pretreatment of the decentralized rural domestic sewage and reducing the load of the subsequent biochemical treatment.

It can be seen from the above that, domestic sewage containing grey water and a small amount of black water automatically flows into the artificial grille 1 through a pipe network or an underdrain, after larger inorganic particles in the water are removed through the artificial grille, the domestic sewage flows into the first downflow chamber 2, the upflow chamber 3 and the second downflow chamber 4 in sequence, when the upflow chamber 3 flows into the second downflow chamber 4, effluent uniformly flows out through a top triangular weir, the upflow chamber and the bottom triangular weir are both provided with anaerobic special fillers to increase the amount of sludge, the last compartment is often provided with a submersible sewage pump (1 for 1), and the effluent is lifted to enter the secondary biochemical treatment unit. There is the inspection socket at every compartment top, and the regular inspection is patrolled and examined and is drawn clearly and draw and go on through the inspection socket, and is very convenient. The utility model discloses combine three traditional manure pits structural style and ABR anaerobism plug flow process characteristic to through addding the filler form and strengthening the preliminary treatment function, alleviate the subsequent treatment load. For small-scale distributed rural domestic sewage, the whole sewage treatment period can be controlled within 7-10 days through reasonable prefabrication or field construction, so that a better and stable treatment effect can be obtained, and the economic benefit is obvious. Compared with the prior art, the utility model, have following outstanding substantive characteristics and beneficial technological effect:

1: the three-lattice structure form of the traditional septic tank is combined with the plug flow process form of the anaerobic baffle plate reactor in sewage treatment, and the three-lattice structure form can be used as a regulating tank for regulating water quantity and water quality in small-scale rural sewage pretreatment, simultaneously precipitate large-particle inorganic matters or suspended matters, and can also be used as anaerobic pretreatment for secondary biochemistry, wherein the three-lattice structure form comprises a hydrolysis acidification stage, and the three-lattice structure form integrates the functions of regulation, precipitation and hydrolysis acidification. The conventional process flow is simplified, and the pretreatment effect is improved.

2: by adopting an ABR-like plug flow mode, the sludge concentration is improved by adding the elastic filler in the upper and lower flow sections, the SS removal rate (70-80%) is increased, and the anaerobic COD and BOD removal efficiency (50-60%) is improved. The precipitated sludge can be periodically cleaned and discharged to a sludge pool or a dung suction truck for outward transportation.

3: the sludge yield is relatively low due to the anaerobic environment. The sewage pump arranged at the tail end of the device is mainly used for lifting sewage to the next stage of biochemical treatment. Because the treatment efficiency is improved in the pretreatment stage, the sewage treatment device can be combined with a plurality of subsequent biochemical and physicochemical process units according to the effluent discharge standard of the sewage station to form a complete sewage treatment chain, and the subsequent biochemical treatment load is greatly reduced.

4: the utility model discloses a prefabricated integrated form, simple structure, it is convenient to maintain. The material can adopt various forms such as reinforced concrete cast-in-place, precast concrete tank, glass fiber reinforced plastic septic tank additional installation and transformation according to anticorrosive and technological requirements, is flexible and quick, has low cost, is only about 50 percent of the cost of the existing equipment, is suitable for the requirements of no professional technical personnel in rural areas, high unattended requirement and the like, is an innovation on rural domestic sewage treatment, and has remarkable economic and social benefits.

Claims (6)

1. A composite pretreatment device for distributed rural domestic sewage comprises an artificial grating (1), a sewage lifting pump and biochemical or physicochemical equipment, and is characterized in that a domestic sewage inlet is arranged on the artificial grating (1), a domestic sewage outlet on the artificial grating (1) is communicated with a water inlet of a first downflow chamber (2), a water outlet of the first downflow chamber (2) is communicated with a water inlet of an upflow chamber (3), a water outlet of the upflow chamber (3) is communicated with a water inlet of a second downflow chamber (4), a water outlet of the second downflow chamber (4) is communicated with a water inlet of the biochemical or physicochemical equipment (6), a water outlet is arranged on the biochemical or physicochemical equipment (6), a sludge suction port is arranged on the first downflow chamber (2) and is communicated with a first sludge suction pump (7-1), a sludge suction port is arranged on the upflow chamber (3) and is communicated with the second sludge suction pump (7-2), the second downflow chamber (4) is provided with a sludge suction port and is communicated with a third sludge suction pump (7-3), and a sewage lifting pump (5) is arranged on a pipeline between the second downflow chamber (4) and the biochemical or physicochemical equipment (6).

2. The decentralized rural domestic sewage combined pretreatment apparatus according to claim 1, wherein a triangular weir is provided on the top of said upstream chamber (3), and domestic sewage flows into said second downstream chamber (4) through said triangular weir.

3. The distributed rural domestic sewage composite pretreatment equipment according to claim 1, wherein the effluent ports of the first downflow chamber (2) and the upflow chamber (3) are provided with submersible sewage pumps to lift the effluent to a lower stage treatment unit.

4. The distributed rural domestic sewage composite pretreatment equipment according to claim 1, wherein the first downflow chamber (2), the upflow chamber (3) and the second downflow chamber (4) are combined together to form a pretreatment reaction structure, the length-width ratio of each chamber is 1-1.5: 1, 4-5 flow partition plates are arranged in each chamber to form a flow partition chamber, the front first flow partition chamber is larger than the width of the rear flow partition chamber, the length and width of the first flow partition chamber and each subsequent unit flow partition chamber are 1-1.2: 1, the first downflow chamber (2), the upflow chamber (3) and the second downflow chamber (4) are all hollow squares made of steel concrete, precast concrete and glass steel, the top of each flow partition chamber is provided with an inspection opening with the size of 800mm x 800mm, a cover plate is covered on the inspection opening, and the size of the cover plate is 880mm x 880 mm.

5. The decentralized composite pretreatment device for rural domestic sewage according to claim 2, wherein the triangular weir at the top of the upstream chamber (3) is a 90 ° right-angled triangular weir, and the length of the triangular weir is the same as the width of the upstream chamber (3).

6. The decentralized rural domestic sewage composite pretreatment apparatus according to claim 1, wherein said artificial grating (1) has a grating gap of 5-10 mm.

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