Type of dewatering sludge machine
There are three sorts of dewatering sludge machine many times used:
Centrifugal sludge dehydrator; This kind of tool can adapt to three types of sludge, however, it consumes excessive energy, and excessive rotating velocity leads to excessive noise.
Virtual belt sludge dehydrator; It is appropriate for physicochemical sludge, low moisture content material of the mud cake, bad response to combined sludge and biochemical sludge, a massive quantity of mouth glide sludge, massive water consumption for backwashing, excessive electricity consumption and complicated maintenance.
Spiral ring kind sludge dehydrator: it is the kind that most human beings will select to use now. The spiral ring kind sludge dehydrator is relevant to three kinds of sludge with extraordinarily low electricity consumption, and the remedy capability has handed the equal kind of centrifugal and belt dehydrators. In an equal way, he additionally has shortcomings. The drawback is that the output is low.
Centrifugal sludge dehydrator
Centrifugal sludge thickener can limit the power used to warm the water in sludge through 6 times, lengthen the house time by using 6 times, and enlarge the output of biogas. The centrifugal sludge thickener can acquire minimal human intervention in the operation process. Centrifugal sludge thickeners can recognize 24-hour unattended operation, which is greater nice and more reliable.
If the strong content material of sludge is much less than 1%, the dewatering impact of direct sludge is no longer ideal, and the demand for flocculants is increased. For example, home sludge or viscous industrial sludge with awareness much less than 1% enters the belt filter press, ensuing in sludge leakage, failure to press out sludge, low remedy efficiency, skinny sludge cake, and excessive water content material of sludge cake. The common technique is to add sludge thickener in civil engineering. The centrifugal sludge thickener has solved this hassle well. After being thickened via the sludge thickener, the sludge attention can be improved to about 3.5% - 11%, which is very appropriate for getting into the belt filter press for strain filtration and dehydration process, averting sludge leakage due to low sludge concentration. It has been broadly used in some areas with giant quantities of sewage and low strong content material of sludge, such as home sludge and starch biochemical sludge.
Characteristic description
The cure ability of the digester has been improved by means of 6 times. After digestion, the extent of sludge has been appreciably reduced, lowering the price of dehydration
Use. Before transportation or exterior fishnets, they can be thickened by way of sludge thickener to 3-8%, which can minimize transportation and exterior fishnets prices via 90%
above. Before getting into the centrifuge or belt filter press, the trouble of dilute sludge is solved and the dewatering capability is extended
Spiral ring kind of sludge dehydrator
The laminated screw sludge dewatering computing device has overcome the technical difficulties of preceding sludge dewatering equipment, such as effortless blockage, incapability to deal with low attention sludge and oily sludge, excessive electricity consumption, and complicated operation. The dehydration mechanism of the gear takes into account such elements as hydraulic co-direction, skinny layer dehydration, desirable strain software, and extension of the dehydration path. While making sure of the dehydration performance of the equipment, it similarly reduces power consumption and water consumption, extends the carrier lifestyles of the equipment, and achieves the intention of environment-friendly and energy-saving dehydration.
The working system of the sludge dewatering desktop of the laminated spiral sludge laptop mostly consists of three steps:
(1) Concentration: When the screw using shaft rotates, the couple of strong and energetic laminations set at the periphery of the using shaft go relatively. Under the motion of gravity, water is filtered out from the relative shifting lamination hole to recognise fast concentration.
(2) Dehydration: the thickened sludge strikes ahead with the rotation of the spiral shaft; Along the outlet course of the mud cake, the pitch of the spiral shaft progressively decreases, the hole between the rings additionally steadily decreases, and the quantity of the spiral cavity continues to shrink; Under the motion of the lower back strain plate at the outlet, the inner stress progressively will increase the blue penetration. Under the non-stop operation of the screw force shaft, the water in the sludge is squeezed and discharged, and the strong content material of the filter cake continues to rise, subsequently realizing the non-stop dehydration of the sludge.
(3) Self-cleaning: the rotation of the spiral shaft drives the touring ring to rotate continuously. The gear realizes the non-stop self-cleaning system of consistent precision with the aid of relying on the motion between the constant ring and the touring ring, for that reason ingeniously warding off the blockading trouble normally present in normal dehydrators.
The laminated spiral sludge laptop can be broadly used in municipal sewage therapy tasks and water cure structures in petrochemical, mild refining, chemical fiber, paper making, pharmaceutical, leather-based and different industrial industries. The authentic operation has proved that the laminated spiral sludge computer can create extensive financial and social advantages for customers.
Virtual belt sludge dehydrator
The belt kind sludge dehydrator is composed of a filter belt, curler drum, filter belt anxiety system, filter belt deflection adjustment system, filter belt washing machine, and filter belt pressure system.
working principle
The water-bearing sludge is separated and transported to the sludge mixing tank via the sludge pump. At the identical time, a coagulant is introduced for a full mixing reaction. The flocculant is a type of macromolecular polymer. When the sludge slurry is mixed, it has the features of bridge, internet capture, adsorption and electric-powered neutralization, and then flows into the sludge distributor of the belt kind sludge filter press. The sludge is evenly disbursed on the gravity dewatering zone. Under the two-way dredging and gravity motion of the sludge rake, the sludge strikes with the dewatering filter belt, Quickly doing away with free water from the sludge. Due to the lengthy sketch of the gravity dewatering area, the most gravity dewatering can be achieved.
The overturned sludge enters the extra-long wedge pre-pressure dewatering area to slowly clamp the sludge discharged from the gravity quarter to shape a sandwich perspective layer, which is slowly pre-increased and filtered in order to reduce the residual free water in the sludge layer. With the gradual strengthening of the top and decreased filter belts, the higher and decreased distance between the two filter belts step by step decreases, and the center sludge layer step by step hardens. Through the pre-pressure dewatering large-diameter filter roller, A massive quantity of free water will be eliminated so that the sludge cake can easily enter the extrusion dehydration area and enter the "S" press section. In the "S" press section, the sludge is sandwiched between the higher and decreased layers of filter cloth, and persistently pressed by way of numerous press rollers. When the top and decrease filter belts bypass via the wavy course shaped by means of the staggered rollers, the shear pressure will be generated on the clamped sludge cake due to the fact the top and decrease positions of the two filter belts are alternate, Most of the last water in the sludge is filtered to promote the sludge cake to be dehydrated again. Finally, the dry sludge cake is scraped off by means of the fiber scraper and transported to the sludge storage location with the aid of belt conveyor or shaftless screw conveyor.