Advanced treatment process of municipal wastewater
A technology for advanced treatment and municipal sewage, applied in multi-stage water/sewage treatment, light water/sewage treatment, water/sludge/sewage treatment, etc. The filter tank covers a large area, etc., to achieve the effect of high degree of automation, small footprint, and small backwashing area
Inactive Publication Date: 2012-03-14
重庆市财信环保投资股份有限公司
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Problems solved by technology
Traditional filters generally occupy a large area, the process is complicated, the filter material saturation period is short, and backwashing is frequent. Usually, it needs to be equipped with high-power backwashing fans and backwashing pumps, and its investment and operating power consumption are relatively large.
Method used
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Embodiment 1
[0018] Municipal sewage advanced treatment process, such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a non-powered rotary filter is firstly set up. The filter is composed of a filter rotary cylinder 1, a water inlet pipe 2, a recoil system, and a slag discharge pipeline. A filter cloth is arranged on the outer peripheral surface, and the filter cloth is supported by a rotating inner frame. The filter cloth arranged on the end surface and the outer peripheral surface of the filter rotating cylinder 1 is a stainless steel woven filter cloth, and the pore size of the filter cloth is 5-200 μm. A water inlet pipe 2 and a slag discharge pipeline protrude into the central hole of the filter rotating drum 1, and a water inlet deflector 3 is radially distributed inside the filter rotating drum 1, and the water inlet deflector 3 is connected with the filter rotating drum The filter cloth on the outer circumference of 1 and the filter cloth on the end surface form a fil...
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The invention discloses an advanced treatment process of municipal wastewater. According to the advanced treatment process, sewage treated by a biochemical pool is introduced into a powerless rotary filter for filtering; waste residue enters a biochemical system sludge storage pool; and the filtered water is disinfected by ultraviolet rays and is discharged after meeting the standard. The advanced treatment process disclosed by the invention has low requirement on hydraulic fall; the filter is driven by using the hydraulic free fall to operate; the rotary filter has no energy consumption; by adopting a stainless steel cloth filter micropore filtering technology and stainless steel 316L woven fabric, the advanced treatment process has the advantages of uniformity in pore space, high filter precision and high efficiency for blocking a suspension; the filter in the process is rotated to automatically rotate the polluted filter cloth to a back flush region; a back flush system can be used for centrally, hydraulically and linearly flushing and has small back flush area, small required back flush pump power and low energy consumption; and the whole process has high automatic degree and sinpleness for operation.
Description
technical field [0001] The invention belongs to the field of sewage treatment, in particular to a process for advanced treatment of municipal sewage. Background technique [0002] Filtration is the process of using porous substances (sieve plate or filter membrane, etc.) to block large solid particles and separate liquid and solid particles. It is usually used in the pretreatment and advanced treatment processes of sewage treatment processes. Pretreatment generally uses large Aperture screen filtration is the process of using porous substances (sieve plate or filter membrane, etc.) to block large solid particles and separate liquid and solid particles. It is usually used in the pretreatment and advanced treatment processes of sewage treatment processes. Pretreatment Generally, large-diameter screens and filters are used, such as mechanical grilles and hydraulic screens. V-type filters, D-type filters, and fiber filters are generally used for advanced treatment. Traditional ...
Claims
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IPC IPC(8): C02F9/08C02F1/32
Inventor 伍莉李启国杨华林
Owner 重庆市财信环保投资股份有限公司