SS multilayer mixed flow precipitation device and precipitation method thereof

Abstract

The invention discloses an SS multilayer mixed flow precipitation device and a precipitation method thereof. Due to the fact that the social industry develops rapidly, the problem of water resource shortage becomes more and more serious, wastewater reuse treatment engineering has great significance in cyclic utilization of water resources, and industrial water pressure can be effectively relieved.The SS multilayer mixed flow precipitation device comprises a water inlet module, an efficient precipitation module and a backwashing module. The water inlet module comprises a wastewater collectingtank, a sewage lifting pump and a first on-off valve; the efficient precipitation module comprises a precipitation device main body, a wastewater inlet central pipe, a water retaining weir plate, a multi-layer water purification inclined plate, a variable-speed mixing area, a fine grid, filter sand, a second on-off valve and a pneumatic diaphragm pump; and the backwashing module comprises an aeration fan and a porous aeration pipe. The process characteristics of the inclined pipe and the vertical flow sedimentation tank are integrated, the treatment capacity and the treatment effect on high SSwastewater are effectively improved, and the sedimentation advantage is obvious in comparison with the devices and the methods in the prior art.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to an SS (suspended solid waste water) multi-layer mixed flow sedimentation device and a sedimentation method thereof. Background technique [0002] Nowadays, my country's water resources are facing various problems such as water pollution and water shortage. Water pollution has exacerbated the shortage of water resources and endangered people's physical and mental health. One of the main pollution threats to my country's main waters is the problem of high suspended solids. At the same time, other characteristic pollutions are also widely affected, and waters are more difficult to control. With the continuous outbreak of social water quality safety incidents, the situation of water resource protection in my country is urgent. [0003] In the treatment of high SS wastewater, coagulation-sedimentation-filtration is the most commonly used water p...

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Problems solved by technology

The horizontal flow sedimentation tank has a simple structure and is easy to operate, but it is difficult to treat wastewater with high SS concentration, and the water discharge effect is poor; the inclined tube sedimentation tank uses the principle of laminar flow to divide the wastewater into multiple stable flow units to shorten the settlement distance of suspended solids. Improve the efficiency of sewage treatment and stabilize the quality of effluent water. However, for wastewater with high SS concentration, a large amount of sludge deposited on the inner wall of the inclined pipe will easily cause the collapse of the packing of the inclined pipe, so the difficulty and cost of equipment maintenance will increase; the sedimentation effect of the vertical flow sedimentation tank is relatively low. Well, it occupies a small area, is convenient for mud discharge, and is easy to manage. However, due to the depth requirement of the tank body, there are problems such as difficult construction and high cost, and the vertical flow sedimentation tank is not strong in adapting to water impact and water temperature changes.

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