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CN-122010351-A - External sewage treatment equipment for soil improvement

CN122010351ACN 122010351 ACN122010351 ACN 122010351ACN-122010351-A

Abstract

The invention relates to external sewage treatment equipment for soil improvement, which mainly comprises a physical treatment tank and a plurality of inclined plates obliquely arranged in the physical treatment tank, wherein a biological treatment unit comprises an aerobic tank and an anaerobic tank which are connected with each other and are respectively provided with an aerobic bacterial biomembrane and an anaerobic bacterial biomembrane, the side wall of the physical treatment tank is connected with the inlet end of a three-way valve at the bottom of the aerobic tank through a first drainage pipeline, the three-way valve is connected with the anaerobic tank, a sliding cup is arranged at the bottom of the aerobic tank in a sliding and sealing manner, a plurality of aerobic biomembrane plates which are sequentially hinged with each other are stacked in the sliding cup, sewage can flow into the anaerobic tank, the anaerobic tank is directly communicated with the bottom of an improvement tank, a plurality of medicament tanks are arranged on the improvement tank, the medicament tanks are used for injecting modifier with corresponding proportion into the improvement tank to be mixed with water, and the improvement tank is also connected with a drip irrigation system arranged on the land. The invention can realize the sewage treatment on site, and the treated water is added with the modifier to improve the land on site.

Inventors

  • WANG XIAOJUN
  • LIU HONG

Assignees

  • 王小军

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. An external sewage treatment device for soil improvement comprises a physical treatment unit and a biological treatment unit, and is characterized in that the physical treatment unit comprises a physical treatment tank (1) and a plurality of inclined plates (6) which are obliquely arranged in the physical treatment tank (1), the top end of the physical treatment tank (1) is used for injecting sewage into the physical treatment tank (1) through a sewage pump (10), the biological treatment unit comprises an aerobic tank (13) and an anaerobic tank which are connected with each other and internally provided with an aerobic biomembrane and an anaerobic biomembrane respectively, the physical treatment tank (1) is connected with the inlet end of a three-way valve (18) at the bottom of the aerobic tank (13) through a first drainage pipeline (4), one outlet end of the three-way valve (18) is connected with the anaerobic tank (13), the bottom in the aerobic tank (13) is coaxially and slidably and hermetically provided with a sliding cup (14), a plurality of aerobic biomembrane plates (16) which are sequentially hinged with each other are stacked in the bottom end opening of the sliding cup (14), so that sewage enters the bottom opening of the sliding cup (14) through the three-way valve (18) and rises upwards to the limit position of the aerobic biomembrane plates (16) in a snake-shaped manner; when the outlet end of the three-way valve (18) is opened, sewage flows into the anaerobic tank (13), the anaerobic tank (13) is directly communicated with the bottom of the improvement pool (19), a plurality of chemical tanks (22) are arranged on the improvement pool (19), the chemical tanks (22) are used for injecting the modifier with corresponding proportion into the improvement pool (19) to be mixed with water, and the improvement pool (19) is also connected with a drip irrigation system (28) arranged on the land.
  2. 2. The external sewage treatment device for soil improvement according to claim 1, wherein one end of the inclined plate (6) is obliquely downwards positioned in the physical treatment tank (1), the other end of the inclined plate is positioned in the extension plate (5) on the side wall of the physical treatment tank (1), a convex cavity (101) is arranged at the bottom of the extension plate (5) close to the physical treatment tank (1), a water leakage hole (10101) is formed in the cavity bottom of the convex cavity (101), a transmission gear (7) is rotatably arranged in the convex cavity (101), and a rack meshed with the transmission gear (7) is arranged at the bottom of the inclined plate (6) so as to drive the inclined plate (6) to slide into/out of the physical tank.
  3. 3. The external sewage treatment device for soil improvement according to claim 2, wherein the physical treatment tank (1) has a partition plate (11) at the center thereof for dividing the physical treatment tank into two parts, and the partition plate (11) is provided with corresponding inclined plates (6) at both sides thereof.
  4. 4. The external sewage treatment device for soil improvement according to claim 3, wherein a first water discharge pipeline (4) horizontally arranged is respectively arranged under each inclined plate (6), and the bottom of the partition plate (11) is positioned at the center of the top end opening of a blow-down valve (12) at the center of the bottom of the physical treatment tank (1).
  5. 5. The external sewage treatment device for soil improvement according to claim 3, wherein the front and rear sides of the two extending plates (5) which are opposite to each other left and right and are left opened are respectively connected through a surrounding baffle (9), so that the two extending plates (5) and the two surrounding baffles (9) and the physical treatment tank (1) together form a rectangular annular water storage bin, the side wall of each annular water storage bin is connected with a second drainage pipeline, and the second drainage pipeline is also connected with the inlet end of the three-way valve (18).
  6. 6. The external sewage treatment device for soil improvement according to claim 5, wherein the upper surface of each extension plate (5) is provided with a plurality of tooth edges (8), and the cross section of each tooth edge (8) is triangular.
  7. 7. The external sewage treatment device for soil improvement according to claim 1, wherein the top end opening of the physical treatment tank (1) is connected with the sewage pump (10), a stainless steel grating (2) is arranged below the top end opening, and a plurality of filter plates (3) are arranged below the stainless steel grating (2).
  8. 8. The external sewage treatment device for soil improvement according to claim 1, wherein the aerobic biological membrane plates (16) are disc-shaped, the sides of two adjacent aerobic biological membrane plates (16) are hinged with each other, the side of the bottommost aerobic biological membrane plate (16) is hinged with one side of the bottom surface of the physical treatment tank (1), and one side of the topmost aerobic biological membrane plate (16) is hinged with one side of the inner top surface of the slide cup (14); The device further comprises an aeration pipe (17) which is coaxially suspended and fixed in the aerobic tank (13), the bottom end of the aeration pipe (17) is closed, the side wall is provided with a plurality of aeration holes, the center of all the aerobic biological membrane plates (16) is provided with a strip-shaped hole (1601), the strip-shaped hole (1601) is used for the aeration pipe (17) to pass through, and when all the aerobic biological membrane plates (16) are stretched to the limit, the aeration pipe (17) does not interfere the movement of the aerobic biological membrane plates (16).
  9. 9. The device for treating sewage for soil improvement according to claim 1, wherein the anaerobic tank (13) is connected with one end of a third drainage pipeline (20), the other end of the third drainage pipeline (20) is vertically inserted into the bottom of the improvement pool (19), a floating plate (21) is vertically and hermetically arranged in the improvement pool (19), the medicament tanks (22) are all fixed on the pool top of the improvement pool (19), piston rods (24) are vertically and slidingly arranged in the medicament tanks (22), a piston plate (2401) at the top end of each piston rod (24) is used for pushing improved medicaments in the medicament tank (22) above the piston rods to be output into a medicament feeding pipeline (23), the bottom end of each piston rod (24) is used for being in contact with the top surface of the floating plate (21), the top end of each medicament pipe is communicated with the bottom of the improvement pool (19) through the medicament feeding pipeline (23), each floating plate (21) is vertically and slidingly and hermetically sleeved with the third pipeline (20) and each medicament pipeline, so that the medicament injection process in the improvement pool (19) is carried out in a water injection process, and the medicament injection process is carried out by moving the floating plate (21) towards the corresponding medicament feeding pipeline (24) and the corresponding medicament injection pipeline (19).
  10. 10. The external sewage treatment device for soil improvement according to claim 9, wherein a sliding plug (25) is further vertically and slidably arranged on a piston plate (2401) in the medicament tank (22), an improvement medicament is filled in the inner space of the medicament tank (22) above the sliding plug (25), a threaded pipe (27) is vertically fixed at the bottom of the medicament tank (22), a screw (26) which is elastically abutted against the threaded pipe (27) through a pre-tightening spring is inserted into the threaded pipe, the extending length of the screw (26) is used for adjusting the medicament output, and the piston plate (2401) can be contacted with the sliding plug (25) to push the sliding plug (25) to move upwards when moving upwards.

Description

External sewage treatment equipment for soil improvement Technical Field The invention belongs to the technical field of sewage treatment and soil remediation, and particularly relates to an external treatment device with double functions of sewage treatment and soil improvement, in particular to external sewage treatment equipment for targeted soil improvement under the scenes such as farmland non-point source pollution treatment, saline-alkali soil/barren land improvement, rural distributed sewage treatment and the like. Background The current soil degradation and water pollution become core problems for restricting the sustainable development of agriculture and improving ecological environment, on one hand, a large amount of barren soil with salinization, acidification and deficient organic matters exists in China, the traditional soil improvement mode mainly adopts means such as single medicament application, physical turning and tillage and the like, and has the defects of long improvement period, unstable effect, easiness in causing secondary pollution and the like, and on the other hand, the dispersed sewage such as farmland tail water, rural domestic sewage, cultivation wastewater and the like can aggravate water eutrophication if being directly discharged, and simultaneously lose a large amount of nutrients such as nitrogen, phosphorus, potassium and the like, so that resource waste is caused. Specifically, the existing sewage treatment equipment and the soil improvement device are largely independent of each other, the conventional sewage treatment device only realizes standard discharge of sewage, purified water and nutrients after treatment cannot be recycled in soil improvement, the resource utilization rate is low, meanwhile, the soil improvement equipment lacks a matched water treatment system, the problems of soil pollution and peripheral water pollution are difficult to solve synchronously, and the treatment efficiency is low. Traditional sewage treatment equipment is mostly buried or includes buried structure, and common some processing unit is directly excavated and is built in situ, and the dismouting maintenance degree of difficulty is big, and cost of maintenance is high, is difficult to nimble adaptation farmland, woodland, near the decentralized soil improvement scene such as plant, can't realize the synchronous linking of on-the-spot sewage treatment and soil improvement. Therefore, an external device with functions of deep sewage purification and accurate soil improvement is developed, pollution control and soil improvement are achieved, synergy is achieved, and the device becomes a main technical problem to be solved in the field. In addition, the traditional sewage treatment generally comprises physical separation filtration and biological decomposition, and the conventional physical sedimentation device mostly adopts a simple filter material structure and then naturally and intensively settles at the bottom, so that suspended matters settle and separation settling efficiency is low, and further the subsequent biological treatment process is restricted. In a biological treatment link, most of the biological membranes in the traditional aerobic tank are fixedly laid in a flat or suspended manner, the condition that the biological membranes cannot be completely covered by sewage is easy to occur, the contact degree of the sewage and the biological membranes is limited, the degradation of organic matters and the insufficient denitrification and dephosphorization efficiency are caused, and the utilization of microbial flora is insufficient. In the soil improvement link, generally adopt the mode of manual injection medicament, medicament ratio precision is poor, degree of automation is low, can't realize accurate ration ratio according to sewage treatment capacity, and improvement liquid concentration is difficult to adapt to the improvement demand of different soils, leads to sewage treatment and soil improvement cooperativity poor, both can not thoroughly solve sewage pollution problem, also is difficult to high-efficient improvement soil hardening, acid-base unbalance, current situations such as organic matter starvation. Although the prior art has high-precision automatic medicament proportioning equipment, the purchasing cost is high, and the automatic medicament proportioning equipment is not easy for general users to maintain timely and automatically, so that the application universality is limited. Disclosure of Invention Accordingly, the present invention is directed to an external sewage treatment device for soil improvement, so as to solve the problem that the prior art cannot combine the surface source sewage treatment with the soil improvement. The invention is realized by the following technical scheme: An external sewage treatment device for soil improvement comprises a physical treatment unit and a biological treatment unit, wherein the physical treatment unit comprise