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Flocculation method and device

A purification device and quantitative batching technology, which is applied to washing devices, chemical instruments and methods, washing machine control devices, etc., can solve the problems that the silk screen cannot retain flocs, the filter is clogged, and the filter paper cannot withstand pressure, etc.

Active Publication Date: 2015-09-16
UNILEVER IP HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors of the present application have found that re-use of nonwovens is a problem, while the screen cannot retain floe and the filter paper will not be able to withstand the pressure
It has been found that floe formed under the conditions of JP2002119794A clogs the filter after one or a few cycles

Method used

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  • Flocculation method and device
  • Flocculation method and device
  • Flocculation method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0092] Example 1: pH Controlled vs. Constant Dosage of Electrolyte

[0093] In this example, the effect of a pH-controlled amount of electrolyte compared to a constant amount is demonstrated.

[0094] In Example 1 a device according to the invention was used with a tank with a 20 L volume of flushing fluid, a first dosing point for electrolyte, a mixing coil, a second dosing point for polymer, another mixing pan Nylon mesh (130 micron cut-off) filter of 0.075 m2 and return to the main flush tank.

[0095] 20L of model flushing fluid is pre-made. The model flush contains 2 g / L of model detergent.

[0096] flushing fluid

[0097] components concentration Model Descaler 2g / L Kaolin 0.25g / L

[0098] The model descaling agent has the following ingredients:

[0099] Model Descaler

[0100] components concentration(%) Sodium linear alkylbenzene sulfonate (delivered by Reliance Chemicals India) 16 Soda (delivered by Tata Che...

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Abstract

The present invention is in the field of laundry processes and devices. In particular the invention relates to the saving of water. It is an object of the present invention to reduce the water consumption in conventional washing methods, especially machine washing methods. It is found that the continuous pH controlled sequential dosing of an electrolyte, followed by dosing of a polymer and a solid liquid separation step during a full wash cycle of a washing machine, provides continuous clarification of the wash liquor and enables the continuous reuse of the water during said wash cycle.

Description

technical field [0001] The present invention is in the field of laundry methods and devices. In particular, the invention relates to water conservation. Background technique [0002] Flushing processes including laundry, machine dishwashing, and other household cleaning processes require large amounts of water throughout the world. [0003] For example, commercially available front loading washers use about 60 liters of water in a normal full rinse cycle, top loading machines and hand wash processes require about 180-240 liters of water in the same cycle depending on the number of rinse steps (2 or 3) . Depending on the number of flush steps, one quarter or one third of this volume is required for the main flush, and three quarters or two thirds for two or three consecutive flush steps. [0004] Discarded water burdens sewage treatment plants or, in developing countries, surface water supplies. [0005] JP2002119794A discloses a flushing machine capable of rapidly purify...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52D06F39/00C02F9/00C02F1/56C02F103/00C02F1/00D06F34/22
CPCC02F1/56D06F39/006D06F2204/02D06F39/02C02F2301/046C02F1/5236D06F39/10Y02B40/56D06F2202/02C02F1/001C02F2103/002D06F33/02D06F39/004C02F1/52D06F34/22Y02B40/00D06F39/20
Inventor S.比斯瓦斯D.查特特杰R.K.加格R.S.斯雷思D.希鲁梅尼
Owner UNILEVER IP HLDG BV