Residual pressure type circulating water system discharge water recycling device

Abstract

The invention discloses a residual pressure type circulating water system discharging water recycling device. The device comprises a shallow filter and an ion exchanger. The water outlet of the shallow filter is connected with the water inlet of the ion exchanger, the water inlet of the shallow filter is connected with a water outlet pipe of a circulating water system, and the water outlet of the ion exchanger is connected into a water collecting tank of the circulating water system. The shallow filter adopts garnet as a filtering medium. The ion exchanger adopts macroporous cation exchange resin. A backwashing loop is connected between the water inlet and the water outlet of the ion exchanger in parallel. The device disclosed by the invention reasonably utilizes system residual pressure, energy consumption is effectively reduced; a shallow filtration and ion exchange combined treatment technology is adopted; effluent quality meets standards of reclaimed water used for circulating cooling water, and effluent can be directly recycled to a circulating cooling water system; and an ion regenerated liquid recycling unit realizes regeneration of ion exchange resin, recycling of regenerated liquid and profit from selling precipitate byproducts at the same time.

Description

technical field [0001] The patent of the present invention relates to the field of industrial circulating water treatment, and specifically relates to a device for regenerating and reusing sewage from a circulating water system by utilizing the residual pressure of the pipeline of the circulating water system. Background technique [0002] At present, the amount of circulating cooling water in my country's industrial water accounts for a considerable proportion, among which the annual consumption of circulating water in metallurgy, power generation, petroleum and other industries accounts for 50-80% of the total industrial water consumption. The regeneration and reuse of sewage from circulating water system is an effective way to solve the shortage of industrial water resources and realize the reduction of sewage discharge. Since the circulating water system added with water quality stabilizer adopts a high concentration multiple during actual operation, the water quality in...

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Problems solved by technology

In this method, the membrane treatment system requires high pressure and high energy consumption in actual operation.

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