Sewage-plant resource regeneration irrigation system based on short-term alternate cutting quick growing forest

Abstract

The invention relates to a sewage-plant resource regeneration and irrigation system based on the short-term rotational felling of the fast-growing plantation, in particular to a sewage reutilization device. The invention provides a sewage-plant resource regeneration and irrigation system based on the short-term rotational felling of the fast-growing plantation. The system is provided with a sewage inlet pipe, an interception tank, a sewage delivery pipe, a sewage delivery pump, a pre-position tank and a sewage outlet pipe; the sewage inlet pipe is communicated with the interception tank, the interception tank is communicated with the pre-position tank through the sewage delivery pipe, the sewage delivery pump is arranged on the pipeline of the sewage delivery pipe, and the pre-position tank is communicated with the sewage outlet pipe. The sewage source is broad, and the waste water from small cities, scenic spots, living quarters and the agricultural and subsidiary product processing industry, etc. can be utilized; the equipment is simpler, the cost is low, the sewage treatment amount is large, and the structure form of the equipment can be arbitrarily changed and combined according to the demands of the forest land scale and the topography; the application range is wide; the operational management is simpler, the expense is low; the rotation irrigation can be performed through partitioning, and the rotation irrigation period, the irrigation time and the irrigation volume can all meet the requirements of different trees.

Description

technical field [0001] The invention relates to a sewage reuse device, in particular to a sewage-plant resource regeneration irrigation system based on short-term rotation fast-growing forests. Background technique [0002] Forest land sewage ecological treatment (FLTS) originates from the needs of forestry production, and its essence still belongs to the type of sewage land ecological treatment. Urban sewage land treatment technical guide [M]. China Environmental Science Press, 1997) does not involve measures combined with forestry production. Intensive short-term rotation cultivation (SRIC) is a relatively new cultivation method ([2] MoffatA.J., ArmstrongA.T., Ockleston J. The optimization of sewage sludge and effluent disposal on energy crops of short rotation hybrid poplar [J].Biomass and Bioenergy 2001, 20:161-169), which has higher wood biomass than medium-term rotation forest and clearcut forest, but has faster nutrient and water consumption rates ([3]White E.H., Wh...

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Problems solved by technology

The system occupies a forest area of ​​880hm 2 , transported to pine forests and fruit forests by gravity or water pumps through the front pond, and the annual sewage treatment capacity is 409mm / a ([16]Ou Z.Q., Sun T.H., Li P.J., Yediler A., ​​et al.A production-scale ecological engineering forest system for the treatment and reutilization of municipal wastewater in the Inner Mongolia, China[J].EcologicalEngineering, 1997, 9: 71-88), but there is no report on the ecological treatment project of sewage forest land combined with SRIC technology

So far, there have been no reports on irrigation techniques for short-term rotation fast-growing forests using domestic sewage and organic wastewater

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