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Water treatment system

A water treatment system and horizontal technology, applied in water/sewage treatment, water treatment parameter control, biological water/sewage treatment, etc., can solve the problem that the real risk of individual chemicals has not been included in continuous or semi-continuous monitoring methods

Inactive Publication Date: 2019-06-07
UNIVERSITY OF MELBOURNE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inability to measure these chemicals online has meant that while parameters such as total organic carbon (TOC) in product water have been used as an indicator of process performance, the true risk of individual chemicals moving through a block has not yet been factored into the equation. Used in continuous or semi-continuous monitoring methods similar to biological reagents
As a result, regular and expensive product water analysis continues for a wide variety of chemical species

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] The enhanced pathogen reduction requirements associated with small communities are shown in Table 1 using seven retarder treatment processes including: ozonation, ceramic microfiltration (MF), biological activated carbon (BAC), reverse osmosis (RO), UV treatment, calcite filtration and chlorination (Cl 2 ) treatment process of seven block devices. The pathogen LRV and required performance indicators for each retardation device are shown in Table 1, and the operational critical limits or thresholds for each performance indicator are then specified accordingly.

[0099] Table 1: LRV required for seven blocker handling systems and CCP sensor type for each blocker

[0100]

[0101] *LRV is accepted (credit) based on USEPALong Term2Enhanced Surface Water Treatment Rule. CT = Contact Time, PDT = Pressure Decay Test.

[0102] In the case of chemical reagents, a similar table can be made based on the molecular characteristics of the subset of the above threshold requireme...

Embodiment 2

[0123] An example of an ozonation unit operating at the Selfs Point Wastewater Treatment Plant in Tasmania, which is suitable for use in the water treatment system of the present invention is provided below. A schematic diagram of the plant is provided at image 3 middle.

[0124] Ozonation Unit Design and Specifications

[0125] Supplier - Wedeco, OCS-GSO 10; Maximum ozone production = 30 g / h; Continuous with internal recirculation; HRT10 = HRT = when 10% of the flow has left the ozone system (flow rate = 20 L / min) 4.8 minutes (4.8 and 5.2 minutes, measured using rhodamine WT for HRT10).

[0126] Remove agency

[0127] Biological agents are deactivated by oxidation using ozone.

[0128] LRV for Ozone Report

[0129] Table 11.1 of Chapter 11 of the US EPA Long Term 2 Enhanced surface water treatment rule toolboxguidance manual, April 2010 (http: / / www.epa.gov / safewater) outlines the requirements for the deactivation of Cryptosporidium from surface water. CT values ​​and t...

Embodiment 3

[0139] An example of a reverse osmosis unit operating at the Selfs Point wastewater treatment plant in Tasmania, which is suitable for use in the water treatment system of the present invention is provided below.

[0140] RO Design and Specifications

[0141] Membrane - Dow BW30

[0142] Modular design – 5x individual elements in series

[0143] Mode of Operation - Operates at 70% recovery with recirculation used to achieve it, semi-continuously in near continuous operation in summer and 4 hours every other day during winter. The membranes are flushed with permeate whenever they are shut down. Osmotic backwash has been observed during shutdown.

[0144] Average flow rate – 23L / m2.h

[0145] Monitor permeate - conductivity, flow rate

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Abstract

The invention provides an improved water treatment system for producing a treated water flow. The system includes: a control unit; a first barrier for receiving a feed water flow therethrough and operable to remove one or a plurality of chemical agents and one or a plurality of biological agents therefrom; and one or more sensors adapted to measure one or more performance indicators of said firstbarrier, the sensors further adapted for inputting the performance indicators to the control unit; wherein the control unit is adapted to access information for facilitating correlation of the measured performance indicators with a level of removal of the chemical agents and simultaneously a level of removal of the biological agents.

Description

technical field [0001] The present invention relates to systems and methods for treating water. In particular, although not exclusively, the present invention relates to systems and methods for monitoring wastewater treatment through simultaneous removal of one or more biological agents and one or more chemical agents. Background technique [0002] A major obstacle to water reuse or recycling is compliance testing (compliance testing, proof testing) and process validation associated with ensuring removal of biological and chemical agents in incoming water (feedwater) to the following levels (process validation) at a level that ensures that there are no acute or chronic health and / or environmental impacts from the reuse of said water and that the treated water is aesthetically (perceptually, aesthetically) pleasing in terms of taste and smell satisfying. According to this guideline, biological agents may be pathogenic agents in the form of viruses, bacteria, protozoa or hel...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/78C02F1/32C02F1/44C02F101/30
CPCC02F1/008C02F1/283C02F1/32C02F1/42C02F1/441C02F1/444C02F1/76C02F1/78C02F3/12C02F3/1268C02F9/00C02F2209/003C02F2209/005C02F2209/05C02F2209/11Y02W10/10
Inventor P.J.斯卡尔斯K.A.诺斯科特S.R.格雷
Owner UNIVERSITY OF MELBOURNE