Winter heat-preserving device for constructed wetland sewage treatment system
A technology of sewage treatment system and constructed wetland, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. It can solve the problem of difficulty in thermal insulation of wetlands, and achieve low operating costs and good thermal insulation effect. , the effect of overcoming the blockage problem
Inactive Publication Date: 2012-07-11
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology
At present, winter insulation in wetlands is still a major difficulty
Method used
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[0021] The artificial wetland of the present invention is vertically filled with three sections of fillers. The fillers of the present invention are combinations of zeolite, gravel, limestone, slag, activated carbon, etc. and various fillers. This embodiment uses limestone fillers as an example for illustration. The particle size of limestone filler in the left and right sections is 16-32mm, and the particle size of limestone filler in the middle section is 8-16mm; the height of limestone filler is 1.6-1.8m, and the bed height is 2.2-2.5m; ventilation pipes are evenly arranged in the wetland One end of the upper layer of the limestone filler and the top of the limestone filler are respectively connected with a water inlet pipe and a water distribution pipe; A main control valve and three sub-control valves are respectively arranged on the water collection pipe and the three sub-control valves are at different heights.
[0022] When the constructed wetland flows vertically down...
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The invention relates to a winter heat-preserving device for a constructed wetland sewage treatment system. The winter heat-preserving device for the constructed wetland sewage treatment system mainly comprises the following: three sections of fillers are vertically filled in the constructed wetland in parallel; a ventilating pipe is arranged in the fillers; a water distribution pipe is arranged on the tops of the three sections of fillers; a water collecting pipe is arranged at the bottoms of the three sections of fillers; a water outlet of the water collecting pipe is higher than a bed body of the constructed wetland; the upper part of one end of the three sections of fillers is connected with a water inlet pipe and the lower part of the other end of the three sections of fillers is connected with a water outlet pipe; a water outlet of the water outlet pipe is higher than the bed body of the constructed wetland; the water distribution pipe and the water inlet pipe are connected with a water head tank respectively; when water enters the water distribution pipe, the water inlet pipe and the water outlet pipe are closed, and the water is discharged from the highest water outlet of the water collecting pipe and then adjusted to the middle water outlet after an ice layer, an air layer and a heat-preserving layer are formed; and when the water enters the water inlet pipe, the water distribution pipe and the water collecting pipe on the bottom layer are closed, and water is discharged from the highest water outlet of the water outlet pipe and then adjusted to the middle water outlet after an ice layer, an air layer and a heat-preserving layer are formed. The winter heat-preserving device for the constructed wetland sewage treatment system can form the ice layer, the air layer and the heat-preserving layer so as to increase the temperature of the wetland in winter.
Description
technical field [0001] The invention relates to a sewage treatment device, in particular to a winter heat preservation device of a constructed wetland sewage treatment system. Background technique [0002] In northern China, the climate is cold in winter. Wallace believes that low temperature will cause wetland system pipes to rupture, wetland plants to dormant, and root microbial metabolism to slow down or even stop. The removal rates of +4-N, TN and TP were 12.0%-40.0%, 12.3%-27.0%, and 6.1%-34.0% lower than those in summer, respectively. Wang Shihe and others from Southeast University found that the removal rate of TP in constructed wetlands in winter was about 15% lower than that in summer. Shen Huan and others from Tsinghua University found that the average removal rate of TP and TN decreased by 34% and 27% respectively compared with summer in the demonstration project of using constructed wetland to purify landscape water quality, which shows that the treatment effici...
Claims
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Login to View More IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 席北斗张列宇夏训峰何连生许其功姜永海
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI