CN215102696U - A clean system for domestic sewage treatment retrieval and utilization - Google Patents

Abstract

The utility model provides a purification system for domestic sewage treatment and reuse, which comprises an adjusting tank, a hydrolysis acidification tank, a contact oxidation tank, a sedimentation tank, a sludge tank, a dehydration machine room and a disinfection tank; a grid is arranged at the inlet of the adjusting tank; the hydrolysis acidification tank comprises an anaerobic tank and an anoxic tank, the bottoms of which are communicated with each other; the sewage in the adjusting tank is lifted to an anaerobic tank through a first lifting pump; the contact oxidation pond is communicated with the top of the anoxic pond; a blower is arranged outside the contact oxidation tank; an aeration pipe arranged in the contact oxidation pond is connected with a blower; the water outlet of the contact oxidation tank is communicated with the sedimentation tank; the bottom of the sedimentation tank is connected with a sludge tank through a sludge pipe; the water outlet of the sedimentation tank is communicated with the disinfection tank; the dewatering machine room is internally provided with a second lift pump and a dewatering machine; one end of the second lifting pump is connected with the dehydrator, and the other end of the second lifting pump is connected to the bottom of the sludge tank; the bottom of the sludge tank is also connected with the anaerobic tank through a third lift pump; embodies the utility model discloses sewage treatment is effectual, and is with low costs.

Description

A clean system for domestic sewage treatment retrieval and utilization

Technical Field

The utility model relates to a sewage treatment technical field, in particular to a clean system for domestic sewage treatment retrieval and utilization.

Background

The purification system for treating and recycling the domestic sewage needs to be reasonably designed according to pollutants in the sewage, a great amount of domestic sewage is generated in daily life in the village of lotus ponds and the institute of Zhujiang nearby, the main pollutants are CODcr, BOD5, NH3-N, TP, SS and the like, and although the purification system for treating and recycling the domestic sewage can also be used for treating by adopting various filtering modes, the cost is high, the occupied area is large, the treatment efficiency is low, so that a set of purification system for treating and recycling the domestic sewage needs to be designed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a clean system for domestic sewage handles retrieval and utilization mentions the problem in order to solve the background art.

In order to achieve the above object, the present invention provides the following technical solutions:

a purification system for treating and recycling domestic sewage comprises a regulating tank, a hydrolysis acidification tank, a contact oxidation tank, a sedimentation tank, a sludge tank, a dehydration machine room and a disinfection tank; a grid is arranged at the inlet of the adjusting tank; the hydrolysis acidification tank comprises an anaerobic tank and an anoxic tank, the bottoms of which are communicated with each other; the sewage in the adjusting tank is lifted to an anaerobic tank through a first lifting pump; the contact oxidation pond is communicated with the top of the anoxic pond; a blower is arranged outside the contact oxidation tank; an aeration pipe arranged in the contact oxidation pond is connected with a blower; the water outlet of the contact oxidation tank is communicated with the sedimentation tank; the bottom of the sedimentation tank is connected with a sludge tank through a sludge pipe; the water outlet of the sedimentation tank is communicated with the disinfection tank; the dewatering machine room is internally provided with a second lifting pump and a dewatering machine; one end of the second lifting pump is connected with the dewatering machine, and the other end of the second lifting pump is connected to the bottom of the sludge tank; the bottom of the sludge tank is also connected with an anaerobic tank through a third lift pump.

To further describe the utility model, the bottom of the anaerobic tank and the anoxic tank are both provided with a submersible stirrer.

The utility model is further described, which also comprises a dosing room; the dosing room provides medicines for the sedimentation tank.

As a further description of the present invention, the disinfection tank employs a chlorine dioxide generator to disinfect the wastewater.

To the further description of the utility model, the device also comprises a clean water tank, an ultraviolet disinfection pipe and a flow groove which are connected in sequence after the disinfection tank.

The utility model has the advantages that:

the sewage automatically flows into the adjusting tank, the inlet of the adjusting tank is provided with a grid to intercept large granular and fibrous impurities, grid slag intercepted by the grid enters the impurity box through mechanical cleaning, and the impurities are periodically removed for outward transportation.

The sewage in the regulating reservoir is lifted to the hydrolysis acidification pool by a sewage lifting pump, the contact oxidation pool mainly adopts a biofilm method, biological fillers are filled in the pool, an oxygen source is provided by an air blower, organic matters in the sewage are fully contacted with the biofilm in the pool, and the water quality is purified through microbial adsorption and degradation. The biological wastewater is treated by a contact oxidation pond, aerobic bacteria are used as main materials, nutrients are sufficient, proper aeration is carried out, organic matters in the wastewater are continuously degraded and oxidized, the domesticated aerobic biological flora is propagated in a large quantity, the organic matters in the wastewater are absorbed, the organic matters are absorbed by the aerobic bacteria and converted into cell matrixes, inorganic small molecules and the like, the concentration of the organic matters is greatly reduced, and the CODcr in the wastewater is further degraded.

The effluent of the contact oxidation tank automatically flows into a sedimentation tank, the residual sludge, the aged biomembrane and suspended matters in water are rapidly settled, and the sludge and the water are well separated. The effluent passes through a disinfection tank and is finally discharged after reaching the standard.

In the design, pollutants such as CODcr, BOD5, NH3-N, TP, SS and the like in the sewage can be cleaned and reach the discharge standard, and the cost of the whole system is reasonably controlled, so that the occupied space is small.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a block flow diagram of the present invention.

Detailed Description

The invention is further explained below with reference to the drawings:

as shown in fig. 1-2, a purification system for domestic sewage treatment and reuse comprises a regulating tank 1, a hydrolysis acidification tank 2, a contact oxidation tank 3, a sedimentation tank 4, a sludge tank 5, a dehydration machine room 6 and a disinfection tank 7; a grating 101 is arranged at the inlet of the adjusting tank 1; the hydrolysis acidification tank 2 comprises an anaerobic tank 21 and an anoxic tank 22, the bottoms of which are communicated with each other; the sewage in the adjusting tank 1 is lifted to an anaerobic tank 21 by a first lifting pump 12; the contact oxidation pond 3 is communicated with the top of the anoxic pond 22; a blower 301 is arranged outside the contact oxidation pond 3; an aeration pipe 31 connected with a blower 301 is arranged in the contact oxidation tank 3; the water outlet of the contact oxidation tank 3 is communicated with the sedimentation tank 4; the bottom of the sedimentation tank 4 is connected with a sludge tank 5 through a sludge pipe; the water outlet of the sedimentation tank 4 is communicated with a disinfection tank 7; the dewatering machine room 6 is internally provided with a second lifting pump 61 and a dewatering machine 62; one end of the second lifting pump 61 is connected with the dehydrator 62, and the other end is connected to the bottom in the sludge tank 5; the bottom of the sludge tank 5 is also connected with an anaerobic tank 21 through a third lifting pump 51; the second lift pump 61 pumps most of the sludge at the bottom of the sludge tank 5 to the dewatering machine 62, the sludge is carried away after the dewatering treatment of the dewatering machine 62, and the sludge of the upper small part of the sludge tank 5 is pumped to the anaerobic tank 21 through the third lift pump 51 for circular treatment.

The wastewater passes through the grating 101 before entering the adjusting tank 1 to remove larger suspended matters, sand grains and various impurities in the wastewater so as to ensure the normal operation of subsequent treatment, the adjusting tank 1 is used for adjusting the water quantity and the water quality of the wastewater, the water quantity is large or small due to stage drainage in a school district, the concentration of the wastewater is high or low, and in order to ensure the stable work of subsequent processes, the change of the water quantity and the concentration of inlet water is small, so the adjusting tank 1 is arranged to adjust the water quantity and the water quality of the wastewater.

The hydrolytic acidification treatment method in the hydrolytic acidification tank 2 is a method between aerobic and anaerobic treatment methods, and can reduce treatment cost and improve treatment efficiency by combining other processes. The hydrolysis acidification process hydrolyzes insoluble organic matters into soluble organic matters under the action of a large amount of hydrolytic bacteria and acidification bacteria, and converts macromolecular substances which are difficult to biodegrade into micromolecular substances which are easy to biodegrade, so that the biodegradability of the wastewater is improved, and a good foundation is laid for subsequent treatment; the hydrolysis purpose in the hydrolysis acidification-aerobic biological treatment process is mainly to convert non-soluble organic matters in the original wastewater into soluble organic matters, particularly industrial wastewater, mainly convert organic matters which are difficult to biodegrade into organic matters which are easy to biodegrade, and improve the biodegradability of the wastewater so as to be beneficial to subsequent aerobic treatment. In consideration of the energy consumption problem of subsequent aerobic treatment, the hydrolysis is mainly used for pretreatment of low-concentration degradation-resistant wastewater.

The contact oxidation tank 3 comprises a tank body, a filler, a water distribution device and an aeration device, and the working principle is as follows: the filler is arranged in the tank body and is used as a carrier of the biological membrane, the wastewater to be treated flows through the filler at a certain flow rate after being oxygenated and is contacted with the biological membrane, the biological membrane and the suspended activated sludge act together to achieve the effect of purifying the wastewater, and the oxygen required in the contact oxidation tank 3 is provided by the air blower 301.

The sedimentation tank 4 is a sedimentation tank 4 provided with an inclined pipe in a sedimentation zone. The assembly form includes two types of inclined pipes and branch pipes. The settling zone of the horizontal or vertical sedimentation tank 4 is divided into a series of shallow sedimentation layers by inclined parallel pipes or parallel pipes (honeycomb packing is sometimes used), and the treated and settled sludge moves and separates from each other in each sedimentation shallow layer. The separation method is divided into three different separation modes of reverse (different) flow, cocurrent flow and direction-finding flow according to the mutual movement direction of the two. Every two parallel inclined plates (or parallel pipes) are equivalent to a shallow sedimentation tank 4. The advantages are that: firstly, the laminar flow principle is utilized, and the processing capacity of the sedimentation tank 4 is improved; secondly, the settling distance of the particles is shortened, so that the settling time is shortened; and thirdly, the sedimentation area of the sedimentation tank 4 is increased, so that the treatment efficiency is improved.

The project adopts a chlorine dioxide generator to disinfect the sewage. The chlorine dioxide (ClO2) sterilizing disinfectant is identified as a high-efficiency strong broad-spectrum bactericide by the World Health Organization (WHO). The chlorine dioxide disinfectant can kill all microorganisms including bacterial propagules, cell spores, fungi, mycobacteria, hepatitis viruses, various infectious disease virus bacteria and the like. The sterilization mechanism of the bactericide on microorganisms is as follows: chlorine dioxide has strong adsorption penetrating power on cell walls, can effectively oxidize enzymes containing thioyl in cells, and can quickly inhibit the synthesis of microbial proteins to destroy microorganisms. Can effectively destroy harmful substances such as phenol, sulfide, cyanide and the like.

The sludge tank 5 is used for temporarily storing the sludge discharged from the sedimentation tank 4 and concentrating the sludge by the self weight of water.

The submersible stirrer 201 is installed at the bottom of the anaerobic tank 21 and the bottom of the anoxic tank 22, and sewage in the anaerobic tank 21 and the anoxic tank 22 is stirred through the submersible stirrer 201, so that the hydrolysis acidification treatment efficiency is improved.

Also comprises a dosing room 8; the dosing room 8 provides medicine for the sedimentation tank 4, and the medicine adopts flocculating agent for changing small particles in water into large particles to precipitate suspended matters.

The water treatment device further comprises a clean water tank 9, an ultraviolet disinfection pipe 10 and a flow groove 11 which are sequentially connected behind the disinfection tank 7, and the water treated by the disinfection tank 7 flows into the clean water tank 9, the ultraviolet disinfection pipe 10 and the flow groove 11 and then is discharged, so that the water quality is further optimized.

The table is pre-viewed for the effect of each processing unit as follows:

the above description is not intended to limit the technical scope of the present invention, and any modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides a clean system for domestic sewage handles retrieval and utilization which characterized in that: comprises a regulating tank, a hydrolysis acidification tank, a contact oxidation tank, a sedimentation tank, a sludge tank, a dehydration machine room and a disinfection tank; a grid is arranged at the inlet of the adjusting tank; the hydrolysis acidification tank comprises an anaerobic tank and an anoxic tank, the bottoms of which are communicated with each other; the sewage in the adjusting tank is lifted to an anaerobic tank through a first lifting pump; the contact oxidation pond is communicated with the top of the anoxic pond; a blower is arranged outside the contact oxidation tank; an aeration pipe arranged in the contact oxidation pond is connected with a blower; the water outlet of the contact oxidation tank is communicated with the sedimentation tank; the bottom of the sedimentation tank is connected with a sludge tank through a sludge pipe; the water outlet of the sedimentation tank is communicated with the disinfection tank; the dewatering machine room is internally provided with a second lifting pump and a dewatering machine; one end of the second lifting pump is connected with the dewatering machine, and the other end of the second lifting pump is connected to the bottom of the sludge tank; the bottom of the sludge tank is also connected with an anaerobic tank through a third lift pump.

2. The purification system for domestic sewage treatment and reuse according to claim 1, wherein: the bottom of the anaerobic tank and the bottom of the anoxic tank are both provided with submersible stirrers.

3. The purification system for domestic sewage treatment and reuse according to claim 1, wherein: also comprises a dosing chamber; the dosing room provides medicines for the sedimentation tank.

4. The purification system for domestic sewage treatment and reuse according to claim 1, wherein: the disinfection tank adopts a chlorine dioxide generator to disinfect the sewage.

5. The purification system for domestic sewage treatment and reuse according to claim 1, wherein: also comprises a clean water tank, an ultraviolet disinfection pipe and a flow tank which are connected in sequence behind the disinfection tank.

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