CN1351970A

CN1351970A - Circular efficient domestic sewage purifying methane apparatus

Info

Publication number: CN1351970A
Application number: CN 00128561
Authority: CN
Inventors: 胡海良
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-14
Filing date: 2000-11-14
Publication date: 2002-06-05
Anticipated expiration: 2020-11-14
Also published as: CN1141260C

Abstract

An annular high-efficient domestic sewage purifying methane apparatus consists of several annular fermentation pools and water retianing walls formed by several concentric circles. Compared with the new available common circular apparatus, the annular apparatus has three times over longer path for domestic sewage to pass through and thus greatly increased effective space for domestic sewage to stay. The present invention has reduced occupied area and domestic sewage purifying cost and raised domestic sewage purifying efficiency.

Description

Circular efficient domestic sewage purifying methane apparatus

The present invention relates to a kind of improved purifying domestic sewage firedamp gas equipment, be suitable for efficiently handling sanitary sewages such as various dwelling houses, biotope, catering trade, make the sanitary sewage of handling reach waste discharge primary standard among the GB8978-1996 that State Bureau of Environmental Protection requires.

Can't reach the new the highest permission emission concentration standard of second pollutant GB8978-1996 by the design among the existing sanitary sewage purifying biogas generating pit standard collective drawings 90SS-1.Reach new emission standard and just must increase the design volume, prolong the sanitary sewage residence time, will increase considerably cost like this.

The present invention is big for the construction volume that solves existing sanitary sewage purifying biogas generating pit existence, the difficult problem that cost is high, and through conscientiously research, the invention of circular efficient domestic sewage purifying methane apparatus has been finished in test finally.The objective of the invention is for a kind of efficient purifying domestic sewage firedamp gas equipment that annular sweathouse and waterwall combine that has is provided.Its design volume comparatively speaking, it is less to increase the volumetrical part, sanitary sewage residence time, the purification efficiency height, laid down cost is lower comparatively speaking.

Annular sweathouse and waterwall structure that the present invention adopts are built in the following way.The annular sweathouse is made of the inside and outside folded annulus of concentric drums more than two or 3 to 4.With partition wall annulus is blocked formation water-in and water outlet.Water-in and water outlet are on same straight line, and sanitary sewage is flow to the other end of right opposite after 1 to a few along the sweathouse rotation of annular by the intermediate ends of sweathouse.Each annular passage can be built 1～2 width of cloth waterwall according to the needs of handling sanitary sewage, is used to delay the speed of current.Technical process is as follows:

Water-in → desilting grease tank [1] → one-level ring shaped anaerobic pond [2] → sand sediment trap [3] → secondary ring shaped anaerobic pond [4] → aerobic filtering basin [5] → water outlet

Sanitary sewage between the one-level anaerobically fermenting in clockwise or be rotated counterclockwise and advance, it must cover annular sweathouse whole process, just can reach secondary ring shaped anaerobic sweathouse.Because annular sweathouse is long and narrow especially, therefore each sanitary sewage that flows into all can make the sanitary sewage of whole sweathouse squeeze the moving effect of playing stirring forward.Sanitary sewage is every through a complete annular sweathouse passage, is three times of typical circular anaerobically fermenting pond diameter to the distance that flow through of outlet from water-in promptly.The typical circular anaerobically fermenting pond sanitary sewage distance L=D (pond diameter) that flows through, and distance L=2 π R＞3D that sanitary sewage is flowed through in the ring shaped anaerobic fermentation vat.The annular fermentation vat of two circles to three circle rotations arranged, and the sanitary sewage distance of flowing through is 6 times and 9 times of typical circular anaerobically fermenting pond diameter.Fermented substrate has adequate time to contact and the digestion that is decomposed with microorganism with the space.Below with reference to accompanying drawing invention is described in further detail: Fig. 1 is the flow process floor map of concrete structure of the present invention, and Fig. 2 is the 1-1 diagrammatic cross-section of concrete structure of the present invention.

With reference to Fig. 2, sanitary sewage is 30 centimetre every pond [1] through a diameter from desilting, length is that the aqueduct of anaerobic pond radius flows into one-level ring shaped anaerobic pond, through flowing into sedimentation basin [3] after three circumference of rotation, flow into secondary ring shaped anaerobic pond [4] through flowing into aerobic filter tank [5] after three circumference of rotation through aqueduct again, flow to total water outlet at last.The inner annular sweathouse constitutional features in one-level ring shaped anaerobic pond and secondary ring shaped anaerobic pond is among Fig. 2, and pond central authorities are the darkest, and each rotates round structural base and improves into the ladder arrangement successively.Get final product effective sedimentation mud like this, when clearing up a sediment every year, can disposable most sediments be extracted out from central pond again.The constitutional features of the waterwall among Fig. 1 [6] is low 20 centimetres of the ring-like core wall of its aspect ratio.Its bottommost centre has one 10 * 100 centimetres mud clean-up port, makes mud be easy to be taken away.The effect of waterwall is the resistance that increases current, and the speed of slowing down current, improves sewage purification and renders a service at the residence time of increase sanitary sewage.

Claims

1, circular efficient domestic sewage purifying methane apparatus of forming jointly by desilting grease tank [1], one-level ring shaped anaerobic pond [2], sand sediment trap [3], secondary ring shaped anaerobic pond [4], aerobic filter tank [5].It is characterized in that between desilting grease tank [1] and one-level ring shaped anaerobic pond [2] and sand sediment trap [3] and secondary anaerobic pond [4] it being that aqueduct by 30 cm diameters is connected.Sanitary sewage rotation from inside to outside from one-level ring shaped anaerobic pond central authorities or the 1st circumference flows to the other end water outlet of anaerobic pond right opposite at last, and improve or successively on same horizontal plane the bottom of each annular sweathouse.

2, the circular efficient domestic sewage purifying methane apparatus of stipulating by claim 1.It is characterized in that the ring structure in one-level ring shaped anaerobic pond and the secondary ring shaped anaerobic pond is to be made of the folded annulus of several concentric drums.When sanitary sewage passes through, adopt to execute clockwise or counterclockwise to change and advance.

3, by the circular efficient domestic sewage purifying methane apparatus of claim 1 regulation, it is characterized in that there is 1～2 width of cloth waterwall centre in each the peripheral annular passage in the ring shaped anaerobic pond.Low 20 centimetres of the aspect ratio annular walls of waterwall, waterwall bottom centre is reserved with 10 * 100 centimetres mud clean-up port, and mud can arbitrarily be passed through.