Device and control method for safety guarantee of municipal sewage recycling

Abstract

The invention discloses a device and a control method for safety guarantee of municipal sewage recycling. The device is provided with an ozone contact pool, a biological activated carbon filter pool and a clean water pool that are arranged and communicated front and rear in sequence, wherein the ozone contact pool is communicated with secondary treatment effluent; a granular activated carbon filling is arranged in the biological activated carbon filter pool; and a water inlet pipe is communicated with a water outlet pipe of the ozone contact pool. The device is provided with a fan, a back flushing gas and water pipeline communicated with the clean water pool, and a controller. The control method comprises the steps that 1), operating allowable value ranges of various measurement components and operating conditions of various equipment are set on the controller, and 2), the device for the safety guarantee of the municipal sewage recycling is started to operate. The device and the control method are applicable to the safety guarantee of municipal sewage recycling, and the device is perfect in structure, flexible to control, high in automation degree, and high in water treatment quality and water treatment efficiency.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to sewage regeneration treatment technology, a device and process for sewage regeneration, deep decontamination and detoxification, and safety assurance. Background technique [0002] Urban sewage recycling is one of the effective ways to alleviate the shortage of water resources. The purified urban sewage can be used for various purposes such as domestic miscellaneous water, municipal greening water, industrial water, landscape ecological water replenishment and farmland irrigation, etc. amount of fresh water. The recycling of sewage not only opens up a stable new water source, but also reduces the environmental load caused by wastewater discharge, which is of great significance to alleviating the shortage of water resources and improving the water environment. However, the residual toxic pollutants COD, nutrient salts and pathogenic microorganisms in the secondary treatm...

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Problems solved by technology

[0004] The purpose of the sewage regeneration advanced treatment process is to remove suspended solids, turbidity and kill water-borne pathogens, improve the removal rate of organic matter, turbidity, nutrients such as phosphorus and nitrogen and other dissolved substances, and improve the quality of effluent water, but it is difficult to completely remove Nutrients and suspended solids in water, toxic and harmful trace pollutants and chromaticity, etc., it is difficult to ensure that the quality of effluent water meets the requirements of surface water bodies

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