Integrated sewage treatment process
Technical Field
The invention relates to sewage treatment, in particular to an integrated sewage treatment process.
Background
With the promotion of novel urbanization of China and the adjustment of industrial structures, a large number of small towns in which economic development areas and industrial parks are built are formed, and the matched treatment of domestic sewage of the small towns is more and more important, but the sewage collection pipe network of the small towns is not perfect, and sewage treatment facilities are lacked, so that the local water environment is seriously influenced. The sewage has the characteristics of irregular discharge, large water quality and water quantity change and the like, and some sewage also has special industrial sewage.
At present, most of the treatment processes of the domestic sewage in the villages and the towns continue to use the treatment processes of the urban sewage plants, but the treatment processes cannot effectively adapt to the characteristics of the domestic sewage in the villages and the towns, and the treatment method has the advantages of low efficiency, high energy consumption, large investment, waste of occupied land, high management and maintenance cost, is only suitable for the characteristics of the domestic sewage in the villages and the towns, and does not have the capability of industrial sewage. Therefore, an integrated sewage treatment process is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an integrated sewage treatment process which is simultaneously suitable for simultaneously treating industrial and domestic sewage.
In order to achieve the purpose, the invention provides the following technical scheme: an integrated sewage treatment process comprises a flow distribution pipeline, an industrial sewage treatment assembly and a domestic sewage treatment assembly, and comprises the following steps:
s1, detection and shunting: the heavy metal detector is used for detecting metal indexes of the sewage in the water main, the control valve is used for controlling the conduction state of the shunt pipeline, so that the sewage with excessive metal flows into the industrial sewage treatment assembly, and the sewage which does not reach the excessive standard value is guided to the domestic sewage treatment assembly;
s2, coarse treatment of industrial sewage: the industrial sewage treatment assembly consists of an ion exchange tank and a mixing and stirring tank, wherein the ion exchange tank is used for electrolyzing heavy metal sewage, after the content of heavy metal is reduced, a pH adjusting liquid medicine and an iron salt are added into the mixing and stirring tank, ferrite powder is prepared from the sewage by a coprecipitation method, and the content of metal in the sewage is reduced;
s3, fine treatment of industrial sewage: the industrial sewage treatment assembly further comprises a membrane separation tank and a flocculation tank, fine particles in the sewage are screened and filtered by the membrane separation tank, the metal residue is reduced, and simultaneously flocs are added to degrade finer particles by the flocculation tank, so that a better treatment effect is achieved;
s4, domestic sewage treatment: the domestic sewage treatment assembly consists of a clarification mud tank, a sedimentation tank, a contact oxidation tank, a deep purification tank and a clean water tank, wherein the flocculation tank is communicated with the clarification mud tank, the sewage subjected to heavy metal removal is guided into the clarification mud tank, the mixed domestic sewage is subjected to further purification treatment in the clarification mud tank, and is precipitated by the sedimentation tank to precipitate flocculates at the bottom of the sedimentation tank and is cleaned at regular time;
s5, purification detection: and detecting COD, pH, BOD, ammonia nitrogen, volatile phenol, cyanide, sulfide and mineral oil in the purified water by using corresponding equipment.
Preferably, aerobic bacteria are added into the contact oxidation tank, the filler is used as a carrier, organic matters in the sewage are used as foodstuff, the organic matters in the sewage are decomposed into inorganic salts, so that the purification purpose is achieved, air in the contact oxidation tank is provided by an aerator pipe of a fan box, elastic three-dimensional filler is adopted in the tank, and a rotary mixing type aerator is adopted at the bottom of the tank.
Preferably, the deep purification tank adopts a chlorine dioxide disinfection device, and the purification tank and the disinfection device can continuously change the dosing amount according to the water yield, so that the aims of adding more dosing in more water and less dosing in less water are fulfilled.
The invention has the technical effects and advantages that: compared with the prior art, sewage treatment process can not only treat domestic sewage, can handle industrial sewage simultaneously, increase a heavy metal detector, monitor water header water source in real time, up to standard then arrange to domestic sewage treatment, up to standard then arrange to industrial sewage fine treatment, increase earlier stage to up to standard sewage and filter the detail, it handles to arranging in domestic sewage to filter the processing in later stage, thereby combine industry and life to handle jointly, reduce sewage treatment consuming time, reduce sewage treatment's economic consumption simultaneously, and is comparatively practical.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
An integrated sewage treatment process comprises the following steps:
s1, detection and shunting: the heavy metal detector is used for detecting metal indexes of the sewage in the water main, the control valve is used for controlling the conduction state of the shunt pipeline, so that the sewage with excessive metal flows into the industrial sewage treatment assembly, and the sewage which does not reach the excessive standard value is guided to the domestic sewage treatment assembly;
s2, coarse treatment of industrial sewage: the industrial sewage treatment assembly consists of an ion exchange tank and a mixing and stirring tank, wherein the ion exchange tank is used for electrolyzing heavy metal sewage, after the content of heavy metal is reduced, a pH adjusting liquid medicine and an iron salt are added into the mixing and stirring tank, ferrite powder is prepared from the sewage by a coprecipitation method, and the content of metal in the sewage is reduced;
s3, fine treatment of industrial sewage: the industrial sewage treatment assembly further comprises a membrane separation tank and a flocculation tank, fine particles in the sewage are screened and filtered by the membrane separation tank, the metal residue is reduced, and simultaneously flocs are added to degrade finer particles by the flocculation tank, so that a better treatment effect is achieved;
s4, domestic sewage treatment: the domestic sewage treatment assembly consists of a clarification mud tank, a sedimentation tank, a contact oxidation tank, a deep purification tank and a clean water tank, wherein the flocculation tank is communicated with the clarification mud tank, the sewage subjected to heavy metal removal is guided into the clarification mud tank, the mixed domestic sewage is subjected to further purification treatment in the clarification mud tank, and is precipitated by the sedimentation tank to precipitate flocculates at the bottom of the sedimentation tank and is cleaned at regular time;
s5, purification detection: and detecting COD, pH, BOD, ammonia nitrogen, volatile phenol, cyanide, sulfide and mineral oil in the purified water by using corresponding equipment.
In summary, the following steps: compared with the prior art, the integrated sewage treatment process provided by the invention can treat domestic sewage, treat industrial sewage, add a heavy metal detector, monitor water source of a main pipe in real time, discharge the sewage to be treated when the sewage reaches the standard, discharge the sewage to be finely treated when the sewage does not reach the standard, add early-stage filtration details to the sewage which does not reach the standard, and discharge the sewage to be treated when the sewage does not reach the standard through later-stage filtration treatment, so that the combined treatment of industry and life is realized, the time consumption of sewage treatment is reduced, and the economic consumption of sewage treatment is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.