Novel efficient full-automatic inclined tube sedimentation tank

Abstract

According to the invention, sludge at the bottom of the inclined tube is removed without cutting off water so that the inclined tube is recovered to the initial state, and the inclined tube sedimentation tank is in the most ideal working state. By keeping the inclined pipe smooth for a long time, the water treatment capacity of the inclined pipe can reach three times of the maximum water treatment capacity of the original design, and theoretically, the water treatment capacity is improved by two times on the basis of the maximum water treatment capacity of the original design and is equivalent to three hundred percent of the maximum water treatment capacity of the original design. Due to the fact that the inclined tube is smooth for a long time, the effluent quality of the existing inclined tube sedimentation tank is no longer deteriorated gradually and is kept at an optimal index far higher than that of the original design for a long time, by taking a water supply plant as an example, the effluent quality of the novel inclined tube sedimentation tank is generally kept at 0.5 NTU, and compared with a common inclined tube sedimentation tank, the effluent quality is improved by one order of magnitude. For a reclaimed water or sewage treatment plant, fine particles in the effluent are effectively reduced besides the original design indexes so that the ammonia nitrogen content in the effluent is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a novel high-efficiency fully automatic inclined tube sedimentation tank. Background technique [0002] The inclined tube sedimentation tank has a history of nearly 70 years since it was invented in the 1950s. The invention of this inclined tube sedimentation tank has greatly improved the efficiency of the sedimentation tank. How much it has been improved is not known. Inconsistency, some conclusions say an increase of 300%, some conclusions say an increase of 500%, and some conclusions say an increase of 700%, and the inconsistency of the statement is due to the inconsistency of the test conditions and test locations due to. [0003] As time goes by, inclined tube sedimentation tanks are gradually popularized in water plants around the world. The water plants mentioned here include surface water plants for water supply, reclaimed water and secondary sedimentation tanks...

AI Technical Summary

Problems solved by technology

The maintenance of the inclined pipe after the second water cutoff is much shorter, generally no more than 15-20 days, and with the passage of time, the maintenance cycle of the inclined pipe is getting shorter and shorter, that is to say, the number of water cutoffs for maintenance of the inclined pipe is gradually increasing , which has caused great difficulties to the continuous normal operation of the water plant

It is for the above reasons that the water treatment capacity of the inclined tube sedimentation tank is getting lower and lower, so it is necessary to frequently stop the water to flush the inclined tube with high-pressure water, and the efficiency of high-pressure water to flush the inclined tube is extremely low, because the high-pressure water reaches the surface of the inclined tube Afterwards, the original water flow direction was changed, and the original impact flow became gravity flow, so the impact force of the water flow on the sludge deposited in the lower part of the inclined pipe was greatly reduced, and the high-pressure water washing could only wash away the loose sludge on the surface. sludge, but the water inlet of the inclined pipe, that is, the dense part of the bottom layer of sludge, cannot be touched at all. If things go on like this, the dense part of the sludge will accumulate more and more, and the water inlet area at the bottom of the inclined pipe will become smaller and smaller. The ascending flow rate is getting higher and higher, which leads to the shorter and shorter water cut-off period of the inclined tube sedimentation tank. In the end, the inclined tube can only be replaced, and the replacement of the inclined tube generally requires about half a month of water cut-off, thus As a result, the inclined tube sedimentation tank cannot be operated for about half a month. This situation greatly affects the water treatment capacity of the water plant, increases the cost of water treatment, and causes a great waste of manpower and material resources. Over the years, the inclined tube sedimentation tank has become a A bottleneck in the water treatment process, the blockage of the inclined pipe in operation has become a very difficult problem. So far, no practical solution has been found to solve this problem.

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