Reclaimed water chlorinating device of sewage treatment system

Abstract

The invention relates to a reclaimed water chlorinating device of a sewage treatment system, which comprises a primary water outlet pump room, a storage tank and a reclaimed water workshop. The device is characterized in that a pre-water inlet and storage tank production pipeline of the reclaimed water workshop is connected with a first chlorinating measuring pump; a second chlorinating measuring pump is additionally arranged in a pre-pump tank of the primary water outlet pump room; and the first and second chlorinating measuring pumps are connected with a signal transducer and a PLC (programmable logic controller), thereby implementing dosing quantity automatic control. Compared with the prior art, the device can ensure the pipe network tail water to stably reach the standard by adopting the two chlorinating processes, and also ensure the long water retention time; and the sodium hypochlorite is added for delayed use, and the water supply total chlorine content can not increase, thereby avoiding adverse effects on green plant growth. The sodium hypochlorite addition amount is 1 ton / day before the improvement and 1 ton / 25 days after the improvement, thereby saving 39 tons per year, saving 667 yuan of sodium hypochlorite per ton and saving the cost by 26 thousand yuan per year.

Description

technical field [0001] The invention belongs to regenerated water treatment, in particular to a regenerated water chlorination device of a sewage treatment system. Background technique [0002] In the reclaimed water treatment program of the sewage treatment system, in order to ensure the microbial content index of the reclaimed water effluent, the reclaimed water system needs to be disinfected by adding sodium hypochlorite. At present, the one-time chlorination process of adding chlorine to the production pipeline before reclaimed water enters the storage tank is adopted. The dosage is controlled at about 17mg / L, the test result of residual chlorine in the effluent is about 0.5mg / L, and the test result of residual chlorine at the end of the pipe network is about 0.05mg / L,. One ton of sodium hypochlorite is used for about a week, and the water quality at the end of the pipe network basically meets the standard. However, after a period of operation, it was found that due t...

AI Technical Summary

Problems solved by technology

However, after a period of operation, it was found that due to the fluctuation of the user's water consumption, the water quality of the storage tank was different, and the long-term residence resulted in a large consumption of sodium hypochlorite, and at the same time, the total chlorine content in the water increased.

The water residence time is long, the dosage of sodium hypochlorite is large, the residual chlorine content at the end of the pipe network is unstable, and the total chlorine content of the water supply is high, which has adverse effects on the growth of green plants

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