RU2181419C1 - Method of sewage header cleaning - Google Patents

Abstract

FIELD: restoration of capacity of pipeline and sewage headers having ground sediments. SUBSTANCE: method includes supply of water into heater, washing out of sediments of header bottom, formation of slurry from sediments material by pumping water from one well of header section to another, and slurry pumping out. Prior to water supply to header, header section is closed from two sides between drain wells. Organized in header in water pumping over from one well to another is turbulent motion of water filling well in course of sediment washing. Upon completion of water pumping over, supplied to header is air under pressure to bubble slurry with simultaneous pumping out of slurry. EFFECT: higher efficiency of cleaning of sewage headers. 1 dwg

Description

 The invention relates to a process technology for cleaning sewer systems and can be used to restore the throughput of pipelines and sewage collectors in the formation of sediment in them in the form of sediments of soil particles and other wastewater inclusions.

 Known invention, designed to clean the sewage system "The working body of the machine for cleaning drainage wells" by ed. St. SU 1654478, E 03 F 7/10, 1991. The device implements a method in which sediments formed in sewer pipes and wells are loosened using rotating blades, and also eroded from water conduits combined with the blades. The disadvantage of this method is the difficulty of cleaning horizontal sections of the collectors, as well as the undeveloped issues of removing loose sediment material from the sewer.

 Also known is a method of cleaning a sewer collector, including supplying water to the collector, washing out the sediment at the bottom of the collector, forming a slurry from the material of the sediment by pumping water from one well of the collector section to another and pumping it out, using the invention according to DE 19847141, E 03 F 9 / 00, 1999.

 The disadvantage of this method is the low efficiency of creating a slurry from the material of sediment and maintaining eroded particles of soil sediment in suspension, which complicates their pumping and complicates filtering.

 The objective of the proposed method is to increase the efficiency of cleaning sewer collectors. This problem is solved due to the fact that in the method of cleaning the sewer collector, which includes supplying water to the collector, erosion of sediment at the bottom of the collector, the formation of a slurry from the material of the sediment by pumping water from one well of the collector to another and pumping it out before supplying water to the collector the collector area is blocked on both sides between the drainage wells; when pumping water from one well to another, a turbulent movement of water forms in the collector, filling it during the erosion process, after rekrascheniya pumping water carried over the air manifold pressure than sparging the slurry is performed while pumping the slurry.

 The proposed method is illustrated in the drawing, which shows the installation for cleaning the collector and the general scheme of the treatment.

 The sewer sewage collector section 1, in which sediment 2 was formed from sediments of soil particles and other fractional inclusions carried by wastewater, is blocked on both sides. At the locations of the drainage wells 3, limiting the collector 1, they are immediately sealed by sealed partitions 4. The partitions can be made in the form of special prefabricated shields or inflatable sealing containers. To eliminate sediment in the collector and restore the throughput of the sewer system, a mobile pump and compressor unit 5 can be used, the unit is equipped with a tank with water reserves 6, a hydraulic pump 7, a compressor 8, a filtering unit 9, a discharge 10 and suction 11 pipes or hoses. The installation is also equipped with a washing device 12 and a switching unit of pipelines 13 and valves 14.

 Installation 5 is located in the immediate vicinity of the blocked section of the manifold 1. Through the drainage well 3, an injection pipe or hose 10 is equipped into the collector, equipped with a washing device 12, for example a hose. When water is supplied from the installation 5 through the device 12, the sediment 2 is gradually washed out and at the same time the washings of the collector 1 are filled with water. After filling the section of the collector 1 with water, they begin to pump water from one drainage well 3 using a suction pipe 11 or hose and pass it through the filter unit 9 to discharge pipe to the washing device 12. Thus, water is circulated in the collector, turbulent fluid movement is formed in it, and a hydraulic mixture is created from the washed material of the sediment.

 Subsequently, the water supply to the washing device 12 is stopped and air is supplied to the collector through the injection pipe 10 under pressure from the compressor 8. This sparges the formed slurry and maintains particles of the sediment material in suspension, which prevents sediment formation and sediment recovery.

 Simultaneously with bubbling, the slurry begins to be pumped out of the collector through line 11 through the filtering unit 9 to the tank 6. After the pumping out of the slurry is complete, the partitions in the collector are dismantled and the sewage system comes into working condition.

 The industrial use of the proposed method is confirmed by the possibility of applying for its implementation not only a specialized tubing installation, but also individual commercially available pumping and compressor stations and mobile devices. The implementation of this method in full-scale conditions of urban or main sewage can not cause difficulties in terms of providing temporary overlap of the collector area with the existing really existing means.

Claims (1)

 A method of cleaning a sewer collector, including supplying water to the collector, washing out the sediment at the bottom of the collector, forming a slurry from the material of the sediment by pumping water from one well of the collector section to another and pumping it out, characterized in that the collector section is blocked from two before supplying water to the collector sides between the drainage wells, when pumping water from one well to another form a turbulent movement of water in the reservoir, filling it during the erosion of the sediment, after stopping pumping I water is carried over the air manifold pressure than sparging the slurry is performed while pumping the slurry.