Reverse osmosis water making mechanism-based wastewater adjustment system and wastewater adjustment method

Abstract

The invention provides a reverse osmosis water making mechanism-based wastewater adjustment system and a wastewater adjustment method. The system comprises a water feeding end and a water dischargingend, wherein a Total Dissolved Solid (TDS) detection device, a water feeding electromagnetic valve and a filter device are arranged on a pipeline between the water feeding end and the water discharging end in sequence; the filter device is provided with a pressurizing pump and a Reverse Osmosis (RO) filter element in sequence in a water flowing direction; a pure water outlet of the RO filter element is connected with the water discharging end; a concentrated water outlet is connected with a sewage discharging end; the sewage discharging end is provided with a sewage discharging electromagneticvalve; the sewage discharging electromagnetic valve can discharge concentrated water by at least two sewage discharging flowrates; the water feeding electromagnetic valve, the pressurizing pump and the sewage discharging electromagnetic valve are all connected with an electric control device; the electric control device controls the pressurizing pump and the sewage discharging electromagnetic valve according to temperature detected by the TDS detection device and / or the total content of solids dissolved in a water body. A TDS probe is used for detecting temperature of fed water and a water quality condition; the electric control device makes corresponding judgments according to different water quality conditions, so that a working mode of the wastewater adjustment system can be adjusted to ensure that the quality of produced pure water meets a standard.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a wastewater regulating device in a reverse osmosis water production system and a control method thereof. Background technique [0002] The water efficiency of ordinary household reverse osmosis water purifiers is relatively low, and the recovery rate of purified water generally does not exceed 30%, resulting in a great waste of water resources. At present, the working mode of the general water-saving water purifiers on the market: use the current limit of the discharge or change the ratio of concentrated wastewater to discharge, and the ordinary computer control board will energize or close the working frequency of the concentrated discharge solenoid valve to realize the discharge of concentrated water. In order to achieve the so-called water-saving mode, but the working mode of these water-saving water purifiers will increase the workload of the RO membrane and the boos...

AI Technical Summary

Problems solved by technology

[0002] The water efficiency of ordinary household reverse osmosis water purifiers is relatively low, and the recovery rate of purified water generally does not exceed 30%, resulting in a great waste of water resources

At present, the working mode of the general water-saving water purifiers on the market: use the current limit of the discharge or change the ratio of concentrated wastewater to discharge, and the ordinary computer control board will energize or close the working frequency of the concentrated discharge solenoid valve to realize the discharge of concentrated water. In order to achieve the so-called water-saving mode, but the working mode of these water-saving water purifiers will increase the workload of the RO membrane and the booster pump, which will accelerate the reduction of the desalination rate and life of the RO membrane, and increase the probability of machine failure. This requires adjustable recovery modes to meet various usage needs

[0003] There are also some machines blindly pursuing the water-saving process with high recovery rate. Due to the difference in water quality in different regions, the concentration of concentrated water produced by the water production process with high recovery rate using concentrated water backflow is too high, resulting in the failure of the RO membrane. The increase in the concentration of the influent makes the attenuation of the RO membrane faster, accelerates the fouling speed of the RO membrane, and shortens the life of the RO membrane. This recovery mode is fixed and single, and it is impossible to choose at least two or more recovery modes. , a technical problem that needs to be solved urgently by those skilled in the art

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