Patent ID: 11932564
Assignee: NORTH CHINA MUNICIPAL ENGINEERING DESIGN & RESEARCH INSTITUTE CO., LTD.
Field: Environmental technology (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A system for extracting carbon source from sewage sludge in sewer pipes through online organic and inorganic component separation, comprising an outer system box, wherein a system body is provided in the outer system box; the system body comprises a deodorization module, a pre-treatment module, and a cyclone separation module that are sequentially connected from top to bottom; an upper side wall of the cyclone separation module is provided with an oversize residue pressing module; and the pre-treatment module, the cyclone separation module, and the oversize residue pressing module are electrically connected to a control module;
the pre-treatment module is configured to screen out a large particle in sewage sludge, and comprises a grid plate, a rotating scraper, a rinsing device, a variable-frequency drive motor, a sludge distribution pipe, an oversize residue inlet slot, a flow adjustment sludge funnel, a sludge discharge valve, and a first sludge outlet pipe;
the grid plate is a fixed horizontal circular grid plate;
the sludge distribution pipe is provided with a sludge outlet; and the sludge outlet is located above the grid plate;
a bottom of the rotating scraper is tangent to an upper surface of the grid plate; and the rotating scraper is driven by the variable-frequency drive motor to distribute the sewage sludge discharged from the sludge distribution pipe on a surface of the grid plate;
the rinsing device is mainly configured for intermittent rinsing of the large particle intercepted on the surface of the grid plate and for cleaning after a system operation; and the rinsing device is fixedly connected to the rotating scraper, and is provided with an inlet end connected to a water inlet system through a hose;
the oversize residue inlet slot is provided opposite to the sludge distribution pipe, and close to an edge of the grid plate, so that the rotating scraper is easy to scrape the large particle intercepted by the grid plate into the oversize residue inlet slot;
the flow adjustment sludge funnel is located below the grid plate, and is configured to collect sludge passing through the grid plate and adjust a sludge flow rate; and the collected sludge enters the cyclone separation module;
the cyclone separation module is configured to perform organic and inorganic component separation and carbon source extraction of the sewage sludge under a high-speed cyclone state, and comprises a variable-frequency stirring motor, an adjustable stirring paddle, a sludge inlet pipe, a dosing system, a separation funnel, a second sludge outlet pipe, a discharge valve, an inorganic component discharge pipe, an emptying pipe, and an emptying valve;
the variable-frequency stirring motor is configured to drive the adjustable stirring paddle to rotate; and the adjustable stirring paddle is provided in a middle-upper part of the cyclone separation module;
the sludge inlet pipe is provided vertically and opposite to the second sludge outlet pipe;
and the sludge inlet pipe comprises an inlet end connected to the dosing system and the first sludge outlet pipe through a tee, and an outlet end provided 15-20 cm below an operating liquid level of the cyclone separation module;
the separation funnel is located at a bottom of the cyclone separation module, and is configured to collect an inorganic component separated from the sewage sludge; and a lower end of the separation funnel is provided with the discharge valve and the inorganic component discharge pipe;
the emptying pipe is provided in a middle part of the cyclone separation module, and is configured to empty the sewage sludge in a main body of the cyclone separation module after the system operation;
the oversize residue pressing module is configured to dewater and press an oversize residue separated by the grid plate, and comprises a drive motor, a pressing tank, and a discharge spout; the pressing tank is connected to the oversize residue inlet slot through a vertical channel; and the discharge spout is provided diagonally upwards, and extends out of a side of the outer system box; and
the deodorization module is configured for physical adsorption of malodorous gas emitted during sludge treatment by unpowered deodorization, and comprises a filler and an air evacuation device; a bottom surface of the deodorization module is provided with an air inlet mesh; the filler comprises granular activated carbon; and the air evacuation device comprises one end connected to a top center of the deodorization module and the other end extending out of the side of the outer system box.