Ultra-large horizontal filter for water treatment

Abstract

The invention belongs to the field of mechanical devices, and particularly relates to an ultra-large horizontal filter for water treatment. The filter comprises a filter tank body, a water distribution chamber, a filter material layer, a drain outlet, a water inlet and a drain outlet, wherein an upper water inlet and outlet chamber is arranged above the filter material layer in the filter tank body, a lower water inlet and outlet chamber is arranged below the filter material layer, and the filter material layer is supported by a porous plate; and a water distribution chamber side plate is arranged between the water distribution chamber and the filter material layer. The filter has the advantage that the filtering area and the equipment output are greatly improved by 30% or above. Columns are adopted for supporting below the porous plate, and deformation of the porous plate after long-time operation is avoided. Column supporting is adopted, so that the scale of single equipment is further expanded; no dead zone exists in water distribution inside the equipment; a double-speed water cap is used for water distribution, and uniform water distribution can be guaranteed during operationand backwashing of the filter.

Description

technical field [0001] The invention belongs to the field of mechanical devices, in particular to a super-large horizontal filter for water treatment. Background technique [0002] Filter is a commonly used equipment in the water treatment industry. Vertical filters were used in the past, but the processing capacity of vertical filters is small, and the effect of removal and filtration is poor, which cannot meet the needs of large-scale treatment now. [0003] Therefore, technicians have increasingly developed some horizontal filters. Compared with vertical filters with the same processing flow, horizontal filters have the advantages of less equipment, small footprint, less investment, Easy management and other advantages. Horizontal filters usually need to be cleaned by backwashing. The sand filter layer in the filter is loosened by using reverse water inflow, so that the intercepted matter adhering to the surface of the filter material can be peeled off and taken away by ...

AI Technical Summary

Problems solved by technology

In order to maximize the water treatment capacity of the horizontal filter, the horizontal length of the horizontal filter is usually increased, but with the increase of the horizontal length, the filtration area increases, and the water flow of the horizontal filter will also be uneven. , poor filtering and backwashing effects

According to the patent of a horizontal filter device for seawater desalination (CN 105289060) in the existing design, according to the patent description, it is found that there are the following fatal problems: 1. Upper manhole (11) and upper backwash drainage The filter material at the chamber (7) has a dead zone, which cannot be backwashed and will cause microbial growth, which poses a great risk to the operation of the subsequent membrane system; 2. The lowest point of the water flow port (6) in the upper backwash drainage chamber It is higher than the lower edge of the upper backwash drainage chamber (7), causing the backwash discharge water to not be completely drained, resulting in the accumulation of sewage and affecting the water quality of subsequent operations; 3. According to the description in [0054], the horizontal filter is When washing, the exhaust port is opened to lead directly to the atmosphere, and this step will produce water to break the siphon phenomenon, causing the siphon described in [0027] to fail to produce; 4. According to several key data in the patent description, it is found after simulation calculation that if the Satisfied with 35 units Horizontal filter replacement 140 units The vertical sand filter [0003], its filter area needs at least 38m 2 , according to 15L / m 2 The maximum backwash intensity of s [0052], the backwash water volume should be 2077.11m 3 / h, according to the data requirements in [0033] in this patent, if the minimum area required for setting a single backwash drainage tank (8) should be 1.154m 2 , that is, a square tank of at least 1075mm(L)×1075mm(H), if two backwash drainage tanks are installed, a square tank of at least 760mm(L)×760mm(H) is required

Therefore, as described and required according to the patent (CN 105289060), this horizontal filter cannot realize the manufacture and use of its mechanical design

Images