SU567462A1 - Apparatus for automatically regulating slime level in a clarifier - Google Patents

Description

(54) DEVICE FOR AUTOMATIC REGULATION OF SLUDGE LEVEL IN LIGHT

Yale HacTOsnuero of the invention is the stabilization of the process i of clarifying j and reducing the energy consumption and consumption of reagents.

To this end, a device for automatically adjusting the level of sludge in the clarifier in communication with the sludge compactor through sludge disposal windows has a sensor for absorbing water on the upper limit line of the sludge in the clarifier, a sensor for absorbing water on the upper limit of sludge compactor and a flow sensor continuous purge, connected to the inputs of the regulator, the output of which through the actuator mechanism is connected to the control valve by blowing an optical density sensor of water to the line and lower normal level of sludge in the clarifier and the sensor optical density of water at the upper normal level of sludge in a clarifier associated to the inputs of regulator cutoff torus, whose output is coupled through an actuator with a cutoff valve. Also, the sensor of water optical density on the line of the lower cut of the first sludge-disposal window of the sludge compactor connected to the inlet of the continuous blowdown controller, the sensor of the optical density of water on the sll extruder in the slurry packer and the water level sensor of the distributor connected to the regulator's inlets cutoffs.

The drawing shows a diagram of a device for adjusting the level of sludge level in the clarifier. The device contains a continuous blower controller 1, to the inputs of which are connected the sensor 2 of the optical density of water on the lower section line of the first shts to remove the window 3 of the slurry compactor 4, sensor 5 of the optical density of water at the upper limit of the slurry 6 in the clarifier 6, sensor 7 of the optical density of water on the line of the upper limit of the sludge in the sludge compactor 4 and the sensor 8 of the flow rate of continuous blowdown, the output of the continuous blower controller 1 through the actuator 9 is connected to the control valve 1O continuously th purge.

The inputs of the cutoff controller 11 are connected to a sensor 12 for absorbing water on the lower normal sludge level line in the clarifier 6, a sensor 13 for absorbing water on the upper normal sludge line in the clarifier 6, sensor 14 for absorbing water on the line above the sludge limit level in slurry compactor 4 and sensor 15

water level in switchgear 16 cutoffs.

The output of the cut-off regulator 11 is connected via an actuator 17 to a re-regulating cut-off valve 18 installed at the exit of the pipeline 19 connected to a collector 20 located in the upper part of the slurry compactor 4.

The device works as follows.

In the lower part of the clarifier 6 water and reagents are pricked. When mixed, a suspended sludge is formed, which serves as a sludge filter for water clarification. The clarified water is discharged through the collector 2O, located in the upper part of the slurry compactor 4 under the action of water pressure in the system.

Maintaining the level of suspended sediment in clarifier 6 and slurry compactor 4 is achieved by continuously and continuously purging clarifier 6 and regulating the removal of water from slurry compactor 4. Control of continuous purging is performed by regulator 1 of continuous purging and regulation of water diversion of cutoff regulator 11.

At low load, the clarifier 6 has the level of the slurry filter below the optical density of water sensor 2, below the lower section of the first slurry window 3. At the same time, the slurry does not enter the slurry compactor 4, therefore there is no need for purging and regulator 1 holds valve 1O continuous blowdown in the closed state, and the cut-off regulator 11 keeps the valve 18 sec; the cookies are in the closed state to the desired position, as a result of which the minimum amount of water drainage is ensured.

As the sludge accumulates, with increasing load or disturbances, stable AI of the sludge filter, the sludge appears in the sample of sensor 2 and begins to flow through the first sludge discharge window 3 into the sludge collector 4, where it accumulates and seals. The continuous blowdown regulator 1 is triggered, the continuous blowdown rate is set in proportion to the optical density of the question.

Claims (2)

When the level of sludge rises to the line of the lower normal level of sludge in the clarifier 6 and appears in the sample of sensor 12, the controller 11 is activated and the cut-off increases in proportion to the optical density of water. Upon reaching the level of sludge in the light, only 6 lines of the upper normal level and in the sample of sensor 13, according to a signal from the regulator 11, the water cut-off again increases in proportion to the optical density of the sample. When the sludge level in the clarifier 6 rises and it appears in the sensor 5 sample on the sludge limit line, regulator 1 is triggered and a further increase in the flow rate of continuous blowdown is proportional to the optical density of water. As sludge accumulates in the sludge compactor of the filament 4 and its wa line appears at the upper limit level, the sensor 7 signal additionally increases the flow rate of the continuous blowing in proportion to the optical density of the species. When sludge appears on the line above the limit level in the slurry compactor 4, which means that the cutoff flow exceeds the flow rate of the non-continuous blowdown by the signal from sensor 14, the flow controller adjusts downwards to the cutoff decrease. The proposed device allows stabilizing the bleaching process, reducing energy consumption and reagent consumption. The formula of the invention, qi A device for automatic control of the level of sludge in the clarifier, communicated with the sludge compactor through the sludge-removal windows, containing the sensor of the optical density of water on the top line, its maximum level of the sludge in the clarifier, the sensor of optical density of the chooia on the line of the upper limit level in the slurry compactor and the flow sensor continuous: purge connected to the inputs of the regulator purge, the output of which through the actuator is connected to the control valve of the purge optics The water density at the bottom normal sludge level in the clarifier and the water optical density sensor on the upper normal level of the sludge in the clarifier are connected to the inputs of the cutoff regulator, the output of which is connected to the cutoff valve through an extracting mechanism; that, in order to stabilize the process of clarification and reduce energy consumption and consumption of reagents, it is equipped with a sensor for absorbing water on the lower cut line of the first sludge outlet window a lottener connected to the input of a continuous blowdown controller, an optical density sensor for water on the line above the slurry level limiter in a compactor and a water level sensor in a switchgear connected to the inputs of the cutoff controller. Sources of information taken into account during the examination: 1.Authorical certificate number 4634B7, CL, C 05 3) 27/00, 1972 2. Zhivilova L. Overview Atomatization of water treatment plants of power plants with power units SKKD. Ed., Informenergo, M., 1974 p. eleven. sixteen