CN107265618B

CN107265618B - Domestic sewage treatment integrated device based on filler and sponge iron

Info

Publication number: CN107265618B
Application number: CN201710588510.9A
Authority: CN
Inventors: 伍永钢; 鲁正伟; 江文亭; 夏函青; 魏东洋; 魏翔
Original assignee: Anhui Normal University
Current assignee: Anhui Normal University
Priority date: 2017-07-19
Filing date: 2017-07-19
Publication date: 2020-09-29
Anticipated expiration: 2037-07-19
Also published as: CN107265618A

Abstract

The invention discloses an integrated device for treating domestic sewage based on filler and sponge iron, which consists of a closed cylinder, wherein a sewage collecting pipe network is arranged on one side of the integrated device and is communicated with a reservoir, a buffer plate is arranged at the position where sewage in the sewage collecting pipe network enters the reservoir, a sludge pump is arranged at the bottom of the reservoir, a sludge fermentation tank is arranged at the other end of the sludge pump, a pressure intensifier and a heater are arranged on the inner side of the sludge fermentation tank, the bottom end of the sludge fermentation tank is connected with a high-temperature sterilization chamber, the high-temperature sterilization chamber is directly communicated with external soil, a water pump is arranged in the middle of the reservoir, and the other end of the water pump is sequentially connected with a tower type filtering tank, a cage type filler frame and an aerobic biomembrane. The integrated device for rural water treatment has the advantages of low operation cost, small volume, convenient use and low price, can effectively relieve the pollution of rural sewage to the environment, and is widely suitable for rural users to treat domestic sewage.

Description

Domestic sewage treatment integrated device based on filler and sponge iron

Technical Field

The invention relates to the technical field of sewage recovery treatment, in particular to an integrated device for domestic sewage treatment based on filler and sponge iron.

Background

Rural sewage becomes a main component factor of water pollution due to the reasons of scattered areas, large population, difficult collection and the like, and the rural sewage also contains a large amount of organic matters and inorganic salts such as nitrogen, phosphorus and the like.

With the progress of science and technology, the living standard of rural areas is continuously improved, but the living mode of rural residents is not changed along with the improvement of the living standard, and the residents live according to the traditional living mode, for example: domestic sewage is directly discharged and splashed everywhere. Because residents in rural areas live dispersedly, the domestic sewage cannot be treated uniformly, so the pollution of the domestic sewage in the rural areas to water resources is on an increasing trend.

Due to the fact that the culture level and the quality of farmers are generally low, the sources and the harm degree of the environmental harm are not clear, the obvious view is the tangible economic benefit, and the potential environmental harm is ignored. However, the environmental awareness of people plays a crucial role in environmental pollution because the environmental awareness of people often guides the environmental behaviors of people. Only if the overall environmental awareness of people is strengthened and the environmental awareness and the environmental behavior are fully and organically combined, the whole environmental problem is fundamentally broken, and the environmental problem in rural areas is more unfavorable.

The existing rural distributed domestic sewage treatment method mainly comprises the processes of unpowered anaerobic biological treatment, land treatment, artificial wetland and the like. Most of the methods have the characteristics of long retention time, poor treatment effect in winter and poor removal effect of nitrogen and phosphorus in the wastewater. Therefore, the defects of the existing rural domestic sewage treatment technology and the large discharge of nitrogen and phosphorus are direct causes of serious eutrophication of the current domestic water body. Aiming at the defects of the existing rural domestic sewage treatment technology, a rural domestic sewage treatment device with simple structure and high treatment efficiency needs to be provided, so that the treatment current situation of rural domestic sewage is changed.

Disclosure of Invention

The invention aims to provide an integrated device for rural water treatment, which is simple in structure, high in treatment efficiency and high in economic value.

In order to solve the problems, the technical scheme provided by the invention is as follows: an integrated device for treating domestic sewage based on filler and sponge iron is composed of a sealed cylinder, a sewage collecting pipe network arranged at one side of the cylinder and communicated with a water storage tank, a buffer plate I arranged at the position where sewage in the sewage collecting pipe network enters the water storage tank, a sludge pump arranged at the bottom of the water storage tank, a buffer plate II arranged on the sludge pump, a sludge fermentation tank arranged at the other end of the sludge pump, a pressure intensifier and a heater arranged at the inner side of the sludge fermentation tank, a valve and a biogas sensor arranged at the top end of the sludge fermentation tank, a guide pipe arranged at the valve and connected with the biogas collector, a high-temperature sterilization chamber connected with the bottom end of the sludge fermentation tank and directly communicated with external soil, and a water pump arranged at the middle part of the water storage tank, the other end of the water pump is sequentially connected with a tower type filter tank, a cage type filler frame and an aerobic biofilm reactor, an upper interception net and a lower interception net are arranged in the tower type biofilter, a combined type microorganism immobilized porous carrier and sponge iron are filled between the upper interception net and the lower interception net, the aerobic biofilm reactor consists of a water inlet area, a reaction area and a water outlet area, a nanometer aeration disc is arranged above the reaction area, a stirrer is arranged below the nanometer aeration disc, fillers are filled in the reaction area, and the water outlet area is directly connected with the outside.

Further, buffer board one, the contained angle of buffer board two and cistern lateral wall be 45, set up the buffer board and can prevent that sewage from getting into the cistern and arouse big fluctuation, influence subsiding of bottom mud, set up to 45 instability that can reduce the buffer board simultaneously.

Furthermore, one end of the biogas collector is connected with the high-temperature sterilization chamber, the other end of the biogas collector is connected with a gas stove of a user, the biogas collector is connected with the high-temperature sterilization chamber and can provide energy required by sterilization for the high-temperature sterilization chamber, and meanwhile, the residual biogas is connected with the gas stove of the user, so that the economic burden of the user can be reduced.

Furthermore, the top of the tower type biological filter is provided with an air vent which can prevent air generated in the process of treating wastewater from influencing water flow, thereby influencing the water treatment efficiency.

Furthermore, the combined type microorganism immobilization porous carrier is compounded by 3-5 parts of rock wool, 4-9 parts of melamine resin, 0.2-1 part of agar, 7-11 parts of polyurethane, 2-6 parts of polyesteramide, 12-18 parts of polycarbonate, 9-13 parts of urethane and 4-7 parts of nylon to form a density0.91 to 0.94g/cm³The foam material has light weight, good adsorptivity and high wastewater treatment efficiency.

Furthermore, the cage type filling frame is sequentially filled with poly dimethyl diallyl ammonium chloride, polyaluminium chloride, aluminium sulfate, ferric chloride and polyethylene from top to bottom, the weight ratio of the components is 5:3:2:1:1, pollutants in the wastewater can be effectively adsorbed, and the adsorption efficiency is high.

Furthermore, the volume ratio of the water inlet area, the reaction area and the water outlet area is 1:5: 1. Ensures that the sewage has enough reaction time in the biomembrane reactor and improves the sewage treatment efficiency.

Furthermore, nanometer aeration dish on be provided with a plurality of air ducts, the air duct stretches into the reaction zone, has the aeration hole on the air duct, the aeration hole is perpendicular upwards, sets up the oxygen content that nanometer aeration dish can improve the anhydrous water fast, can improve subsequent treatment effeciency effectively.

Further, the working method of the integrated device for treating domestic sewage based on the filler and the sponge iron comprises the following steps: sewage passes through the sewage collection pipe network and gets into the cistern, thereby can descend the particulate matter among them of the velocity of flow in the effect of buffer board and subside, then set up the sludge pump in the cistern bottom will subside in the mud fermentation vat of cistern bottom, mud ferments under the effect of pressure intensifier and heater, the marsh gas that sludge fermentation produced can be collected through the marsh gas collector, mud after the fermentation is accomplished can get into the sterilization of high temperature sterilization room and handle the back as fertilizer, the water pump that sets up in the middle part of the on the other hand cistern can be with the upper water suction of cistern and get into tower filtering ponds in proper order, cage filler frame, aerobic biofilm reactor handles, the waste water of handling directly lets in the external world as industrial water.

Compared with the prior art, the invention has the beneficial effects that: the integrated device for rural water treatment divides rural domestic sewage into two parts for treatment, wherein the settled sludge is fermented firstly, so that organic matters in the sludge can be effectively utilized to ferment and generate methane, and the generated methane can be used by users, thereby greatly reducing the economic pressure of the users; the tower type filtering tank, the cage type filling frame and the aerobic bio-membrane reactor are arranged in the upper layer sewage treatment process, and the aerobic bio-membrane reactor has the advantages of high activity of microorganisms, fast propagation, strong adaptability and good degradation capability, and improves the sewage treatment efficiency. The integrated device provided by the invention has the advantages of low operation cost, small volume, convenient use and low price, can effectively relieve the pollution of rural sewage to the environment, and is widely suitable for rural users to treat domestic sewage.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Wherein: 1-a sewage collecting pipe network, 2-a reservoir, 3-a buffer plate I, 4-a sludge pump, 5-a sludge fermentation tank, 6-a pressure intensifier, 7-a heater, 8-a valve, 9-a methane sensor, 10-a conduit, 11-a methane collector, 12-a high-temperature sterilization chamber, 13-a water pump, 14-a tower type filter tank, 15-a cage type filler frame, 16-an aerobic biomembrane reactor, 17-a water inlet area, 18-a reaction area, 19-a water outlet area, 20-a nano aeration disc, 21-a stirrer and 31-a buffer plate II.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings 1 and examples:

FIG. 1 shows an integrated device for domestic sewage treatment based on filler and sponge iron, which is composed of a closed cylinder, a sewage collecting pipe network 1 is arranged on one side of the integrated device, the sewage collecting pipe network 1 is communicated with a reservoir 2, a buffer plate I3 is arranged at the position where sewage in the sewage collecting pipe network 1 enters the reservoir 2, a sludge pump 4 is arranged at the bottom of the reservoir 2, a buffer plate II 31 is arranged on the sludge pump 4, the included angle between the buffer plate I3 and the buffer plate II 31 and the side wall of the reservoir 2 is 45 degrees, the buffer plate can prevent the sewage from entering the reservoir 2 to cause large fluctuation and influence the sedimentation of bottom sludge, meanwhile, the buffer plate is set to be 45 degrees to reduce the instability of the buffer plate, a sludge fermentation tank 5 is arranged at the other end of the sludge pump 4, a pressure intensifier 6 and a heater 7 are arranged on the inner side of the sludge fermentation tank 5, a valve 8 and a methane, the valve 8 is provided with a conduit 10, the conduit 10 is connected with a biogas collector 11, one end of the biogas collector 11 is connected with a high-temperature sterilization chamber 12, the other end is connected with a gas stove of a user, the biogas collector 11 is connected with the high-temperature sterilization chamber 12 and can provide energy required by sterilization for the high-temperature sterilization chamber 12, meanwhile, the residual biogas is connected with the gas stove of the user and can reduce the economic burden of the user, the bottom end of the sludge fermentation tank 5 is connected with the high-temperature sterilization chamber 12, the high-temperature sterilization chamber 12 is directly communicated with external soil, the middle part of the water storage tank 2 is provided with a water pump 13, the other end of the water pump 13 is sequentially connected with a tower type filter tank 14, a cage type filler frame 15 and an aerobic bio-membrane reactor 16, the tower type bio-filter tank 14 is internally provided with an upper interception net and a lower interception net, a combined type microorganism immobilized porous carrier and sponge iron are, the combined microorganism immobilized porous carrier is a foam material formed by mixing polyurethane, polyesteramide and polycarbonate according to the mass ratio of 7:2:1, a cage-type filler frame 15 is sequentially filled with polydimethyldiallyl ammonium chloride, polyaluminium chloride, aluminum sulfate, ferric chloride and polyethylene from top to bottom, the weight ratio of the components is 5:3:2:1:1, an aerobic biofilm reactor 16 is composed of a water inlet area 17, a reaction area 18 and a water outlet area 19, the volume ratio of the water inlet area 17, the reaction area 18 and the water outlet area 19 is 1:5:1, the sufficient reaction time of sewage in the biofilm reactor is ensured, the sewage treatment efficiency is improved, a nano aeration disc 20 is arranged above the reaction area 18, a plurality of air guide pipes are arranged on the nano aeration disc 20 and extend into the reaction area 18, aeration holes are arranged on the air guide pipes and are vertically upward, the nano aeration disc can quickly improve the oxygen content in water, the subsequent treatment efficiency can be effectively improved, the stirrer 21 is arranged below the nano aeration disc 20, the reaction zone 18 is filled with the filler, and the water outlet zone 19 is directly connected with the outside.

The working method of the integrated device for treating domestic sewage based on the filler comprises the following steps: sewage passes through sewage collection pipe network 1 and gets into cistern 2, thereby can descend the particulate matter among them of the velocity of flow in the effect of buffer board and subside, then set up sludge pump 4 in cistern 2 bottom will subside in the mud fermentation 5 of 2 bottoms of cistern, mud ferments under the effect of pressure intensifier 6 and heater 7, the marsh gas that the mud fermentation produced can be collected through marsh gas collector 11, mud after the fermentation is accomplished can get into 12 sterilization processes of pasteurization room and be regarded as fertilizer, on the other hand water pump 13 that the middle part of cistern 2 set up can be with the upper strata water suction of cistern 2 and get into tower filtering ponds 14 in proper order, cage filler frame 15, aerobic biofilm reactor 16 handles, the waste water of handling directly lets in the external world as industrial water.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The integrated device for treating the domestic sewage based on the filler and the sponge iron is characterized by comprising a closed cylinder, wherein a sewage collecting pipe network (1) is arranged on one side of the integrated device, the sewage collecting pipe network (1) is communicated with a reservoir (2), a buffer plate I (3) is arranged at the position, entering the reservoir (2), of the sewage in the sewage collecting pipe network (1), a sludge pump (4) is arranged at the bottom of the reservoir (2), a buffer plate II (31) is arranged on the sludge pump (4), a sludge fermentation tank (5) is arranged at the other end of the sludge pump (4), a pressure intensifier (6) and a heater (7) are arranged on the inner side of the sludge fermentation tank (5), a valve (8) and a methane sensor (9) are arranged at the top end of the sludge fermentation tank (5), a guide pipe (10) is arranged at the position of the valve (8), the guide pipe (10) is connected with a biogas collector (11), the bottom end of a sludge fermentation tank (5) is connected with a high-temperature sterilization chamber (12), the high-temperature sterilization chamber (12) is directly communicated with external soil, a water pump (13) is arranged in the middle of a reservoir (2), the other end of the water pump (13) is sequentially connected with a tower type filter tank (14), a cage type filler frame (15) and an aerobic biofilm reactor (16), an upper interception net and a lower interception net are arranged inside the tower type biofilter (14), a combined microorganism immobilized porous carrier and sponge iron are filled between the upper interception net and the lower interception net, the aerobic biofilm reactor (16) consists of a water inlet area (17), a reaction area (18) and a water outlet area (19), a nano aeration disc (20) is arranged above the reaction area (18), and a nano stirrer (21) is arranged below the nano aeration disc (20), the reaction zone (18) is filled with filler, and the water outlet zone (19) is directly connected with the outside;

the included angles between the first buffer plate (3) and the second buffer plate (31) and the side wall of the reservoir are both 45 degrees;

one end of the biogas collector (11) is connected with the high-temperature sterilization chamber (12), and the other end is connected with a gas stove of a user;

the top of the tower type biological filter (14) is provided with a vent hole;

the combined microorganism immobilized porous carrier is compounded by 3-5 parts of rock wool, 4-9 parts of melamine resin, 0.2-1 part of agar, 7-11 parts of polyurethane, 2-6 parts of polyesteramide, 12-18 parts of polycarbonate, 9-13 parts of urethane and 4-7 parts of nylon, and the density of the carrier is 0.91-0.94 g/cm³The foam of (1);

the cage type filling frame (15) is sequentially filled with poly dimethyl diallyl ammonium chloride, polyaluminium chloride, aluminium sulfate, ferric chloride and polyethylene from top to bottom, and the weight ratio of the components is 5:3:2:1: 1;

the volume ratio of the water inlet area (17), the reaction area (18) and the water outlet area (19) is 1:5: 1.

2. The integrated device for domestic sewage treatment based on filler and sponge iron as claimed in claim 1, wherein its working method is: sewage enters the reservoir (2) through the sewage collecting pipe network (1), the flow speed of the sewage is reduced under the action of the first buffer plate (3) so as to settle the particulate matters in the sewage, then a sludge pump (4) arranged at the bottom of the water storage tank (2) pumps the sludge settled at the bottom of the water storage tank (2) into a sludge fermentation tank (5), the sludge is fermented under the action of the pressure intensifier (6) and the heater (7), biogas generated by sludge fermentation is collected through a biogas collector (11), the fermented sludge enters a high-temperature sterilization chamber (12) for sterilization treatment and then serves as fertilizer, on the other hand, a water pump (13) arranged in the middle of the reservoir (2) sucks upper water of the reservoir (2) to sequentially enter a tower type filtering tank (14), a cage type filler frame (15) and an aerobic biofilm reactor (16) for treatment, and the treated wastewater is directly introduced into the outside and serves as industrial water.